CN113116440A

CN113116440A - Nail bin supporting sheet of endoscopic surgical anastomat

Info

Publication number: CN113116440A
Application number: CN202110613140.6A
Authority: CN
Inventors: 徐维华
Original assignee: Shanghai Boqia Medical Devices Co ltd
Current assignee: Shanghai Boqia Medical Devices Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-07-16

Abstract

A nail bin supporting sheet of an endoscopic surgical anastomat is characterized in that a nail bin supporting sheet is arranged in a nail bin assembly, and a supporting sheet groove is formed in the side surface of a nail bin cutter groove of a nail bin; when the nail bin supporting sheet is arranged in the supporting sheet groove, the upper edge of the nail bin supporting sheet is contacted with the upper edge of the supporting sheet groove, the lower edge of the nail bin supporting sheet is contacted with the upper bottom surface of the nail bin frame, or the front supporting end of the lower edge of the nail bin supporting sheet is contacted with the upper bottom surface of the nail bin frame, the rear supporting end is contacted with the upper bottom surface of the inclined wedge bottom block, and the lower bottom surface of the inclined wedge bottom block is leaned against the upper bottom surface of the nail bin frame; when tissue is clamped between the nail bin component and the nail anvil component, the nail bin supporting sheet blocks the nail bin tissue close to the nail bin cutter groove from moving in the direction of contacting the upper bottom surface of the nail bin frame.

Description

Nail bin supporting sheet of endoscopic surgical anastomat

Technical Field

The invention relates to a nail bin support of an endoscopic surgical anastomat, in particular to a nail bin support of an endoscopic closing anastomat provided with a cutting knife, and also in particular to a nail bin support of an endoscopic cutting anastomat.

Background

In surgical operations, various manual, electric, and surgical robotically used endoscopic surgical staplers are commonly used for operations to form organ tissue passages and operations to close organ tissue incisions in the abdominal cavity and in the thoracic cavity; procedures used to close incisions in organ tissue in the excretory and reproductive systems; is particularly suitable for the anastomosis operation of organ tissues which are difficult to expose and operate, can reduce operation trauma, shorten operation time and improve operation quality.

Among the actuation assemblies of the laparoscopic surgical stapler described in U.S. patent No. 20130334283a1 are a cartridge assembly and an anvil assembly. A driver is mounted in the actuator assembly. The driving piece is provided with a cutting knife. The endoscope surgical anastomat can be a straight endoscope closing anastomat provided with a cutting knife, an arc endoscope closing anastomat provided with a cutting knife, a straight endoscope cutting anastomat or an arc endoscope cutting anastomat. The nail bin assembly is provided with a nail bin, a nail bin frame, an inclined wedge and a nail bin cutter groove in the front-back direction. The nail bin is arranged on the nail bin frame. The bottom block is wedged obliquely. The lower bottom surface of the bottom block leans against the upper bottom surface of the nail bin frame. The bottom block moves back and forth between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame. A plurality of nail storing holes are arranged on the nail bin tissue contact surface of the nail bin in a staggered way. And an anastomosis nail and a nail pushing block are arranged in the nail storage hole. The anastomotic nail is arranged at the top of the nail pushing block. A plurality of concave forming grooves are arranged on the tissue contact surface of the nail anvil component in a staggered way. The nail anvil component is provided with a nail anvil cutter groove in the front and back directions. The driving piece pushes the cutting knife to move along the nail bin knife slot and the nail anvil knife slot. When a tissue is clamped between the nail bin component and the nail anvil component, the forming groove on the nail anvil component corresponds to the position of an anastomotic nail in the nail bin, the driving component pushes the inclined wedge to move forwards, the inclined wedge pushes the nail pushing block to move upwards in the nail storage hole, the nail pushing block pushes the anastomotic nail to pierce the tissue and press the tissue to be bent and formed on the forming groove, then the anastomotic tissue is formed, and the driving component pushes the cutting knife to move forwards along the nail bin cutter groove and the nail anvil cutter groove to cut the tissue between the nail bin cutter groove and the nail anvil cutter groove.

The first dissatisfaction of the endoscopic surgical stapler of this type is that, because the bottom block of the inclined wedge moves back and forth between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame, so that a gap exists between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame, when the nail bin assembly and the nail anvil assembly clamp tissues, the clamped tissues press the nail bin tissue contact surface close to the nail bin knife groove to move in the direction of the upper bottom surface of the nail bin frame, so that nails can extend out of the nail storage hole and stab on the clamped tissues, at this time, if the nail bin assembly and the nail anvil assembly are opened, the tissues can take out the anastomotic nails from the nail storage hole, so that the endoscopic surgical stapler cannot normally complete the operation of anastomotic tissues; the tissue takes the anastomotic nails out of the nail storage holes in the process that the nail bin assembly and the nail anvil assembly clamp the tissue and open the nail bin assembly and the nail anvil assembly, and the anastomotic nails stabbed on the tissue are very small and are not easy to be found, so that the operation of anastomosing the tissue fails if the operation of anastomosing the tissue is continuously performed; the second dissatisfaction of the endoscopic surgical stapler of this type is that when the clamped tissue presses the staple cartridge tissue close to the staple cartridge knife slot to move in the direction facing the upper bottom surface of the staple cartridge frame, the fine structures between the adjacent staple storage holes in the staple cartridge restraining the staples are also pressed close to the upper bottom surface of the staple cartridge frame by the clamped tissue, so that the staples installed in the staple storage holes are shifted in position, and at this time, when the bottom block of the wedge moves between the lower bottom surface of the staple cartridge and the upper bottom surface of the staple cartridge frame, the fine structures between the adjacent staple storage holes in the staple cartridge restraining the staples are damaged, so that the staples installed in the staple storage holes are shifted in position more, and the staples cannot be accurately pressed against the forming groove to be bent and formed, thereby reducing the quality of the operation. The third unsatisfactory point of the endoscopic surgical stapler of this type is that when the nail cartridge assembly and the nail anvil assembly clamp and staple the tissue, some tissue may be extruded out of the nail cartridge assembly and the nail anvil assembly, resulting in incomplete anastomosis, and the tissue needs to be clamped and stapled again, or the larger size executing assembly needs to be replaced to clamp and staple the tissue again, thereby increasing the operation time and operation cost and reducing the operation quality.

Disclosure of Invention

The invention provides a nail bin supporting sheet of an endoscopic surgical anastomat, which adopts the technical characteristics that a nail bin supporting sheet is arranged in a nail bin assembly, and a supporting sheet groove is formed in the side surface of a nail bin cutter groove of a nail bin; when the nail bin supporting sheet is arranged in the supporting sheet groove, the upper edge of the nail bin supporting sheet is contacted with the upper edge of the supporting sheet groove, the lower edge of the nail bin supporting sheet is contacted with the upper bottom surface of the nail bin frame, or the front supporting end of the lower edge of the nail bin supporting sheet is contacted with the upper bottom surface of the nail bin frame, the rear supporting end is contacted with the upper bottom surface of the inclined wedge bottom block, and the lower bottom surface of the inclined wedge bottom block is leaned against the upper bottom surface of the nail bin frame; when tissue is clamped between the nail bin component and the nail anvil component, the nail bin supporting sheet blocks the nail bin tissue close to the nail bin cutter groove from moving in the direction of contacting the upper bottom surface of the nail bin frame. When the nail bin assembly and the nail anvil assembly clamp tissues, the nail bin supporting sheet blocks the clamped tissues to press the nail bin tissues close to the nail bin cutter groove to move towards the direction of the upper bottom surface of the nail bin frame, so that anastomotic nails can be prevented from extending out of the nail storage holes and pricking on the clamped tissues, and at the moment, if the nail bin assembly and the nail anvil assembly are opened, the tissues can not take the anastomotic nails out of the nail storage holes, so that the endoscopic surgical anastomat can normally finish the operation of the anastomotic tissues, and misoperation is avoided; and when the bottom block of the inclined wedge moves between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame, the nail bin support sheet can not only avoid damaging fine structures between adjacent nail storage holes for restraining the anastomotic nails in the nail bin, but also avoid the position deviation of the anastomotic nails arranged in the nail storage holes, so that the anastomotic nails can accurately abut against the forming groove to be bent and formed, the quality of the bent and formed anastomotic nails is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

The second purpose of the invention is to provide a nail bin supporting sheet of the endoscopic surgical anastomat, which adopts the technical characteristics that a blocking block and the nail bin supporting sheet are arranged in an execution assembly; the technical characteristic that a positioning groove is arranged at the front part of the nail anvil component is adopted; when the nail bin component and the nail anvil component are closed, the nail bin support sheet pushes the blocking block to upwards swing in the direction from the front part of the nail bin component to the front part of the nail anvil component, so that the blocking block is inserted into the positioning groove in the front part of the nail anvil component and then is blocked between the front part of the nail bin component and the front part of the nail anvil component; when the nail bin component and the nail anvil component are opened, the nail bin supporting sheet pushes the blocking block to swing downwards at the front part of the nail bin component towards the direction of separating from the positioning groove at the front part of the nail anvil component. Because the nail bin assembly and the nail anvil assembly can prevent tissues from being extruded out of the anastomotic region of the nail bin assembly and the nail anvil assembly when clamping and anastomosing the tissues, and because the blocking block is inserted into the positioning groove in the front part of the nail anvil assembly, the forming groove on the nail anvil assembly can be ensured to correspond to the anastomotic nail in the nail bin assembly, the complete operation of the anastomotic tissues can be completed at one time, the quality of the curved forming of the anastomotic nail is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

The third purpose of the invention is to provide a nail bin supporting sheet of the endoscopic surgical anastomat, which adopts the technical characteristic that a rear shifting block at the rear part of the nail bin supporting sheet is inserted into a rear cam groove of a nail anvil assembly to form a cam mechanism; the technical characteristic that a swing mechanism is formed by inserting a front shifting block into a front shifting groove between a nail bin supporting sheet and a blocking block is adopted; the nail anvil component pushes the rear shifting block through the rear cam slot in the cam mechanism to enable the nail bin supporting sheet to move back and forth in the nail bin component; the technical scheme that the nail bin supporting piece enables the blocking block to swing up and down on the front part of the nail bin assembly through the swinging mechanism is achieved. Because the blocking block moves along with the opening and closing between the nail bin component and the nail anvil component, a new control mechanism and an operation program are not required to be added into the operation component, and when too much tissue is clamped between the nail bin component and the nail anvil component, the blocking block can prompt that the nail bin component and the nail anvil component cannot be completely closed, so that misoperation can be avoided, and the technical effects of reducing the product cost, reducing the operation time and improving the operation quality are achieved.

The purpose of the invention is realized by the following technical scheme:

the executing component of the endoscopic surgical anastomat comprises a nail bin component and a nail anvil component. A driver is mounted in the actuator assembly. The driving piece is provided with a cutting knife. The endoscope surgical anastomat can be a straight endoscope closing anastomat provided with a cutting knife, an arc endoscope closing anastomat provided with a cutting knife, a straight endoscope cutting anastomat or an arc endoscope cutting anastomat. The nail bin assembly is provided with a nail bin, a nail bin frame, an inclined wedge and a nail bin cutter groove in the front-back direction. The nail bin is arranged on the nail bin frame. The bottom block is wedged obliquely. The lower bottom surface of the bottom block leans against the upper bottom surface of the nail bin frame. The bottom block can move back and forth between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame. A plurality of nail storing holes are arranged on the nail bin tissue contact surface of the nail bin in a staggered way. And an anastomosis nail and a nail pushing block are arranged in the nail storage hole. The anastomotic nail is arranged at the top of the nail pushing block. A plurality of concave forming grooves are arranged on the tissue contact surface of the nail anvil component in a staggered way. The nail anvil component is provided with a nail anvil cutter groove in the front and back directions. The driving piece pushes the cutting knife to move along the nail bin knife slot and the nail anvil knife slot. When a tissue is clamped between the nail bin component and the nail anvil component, the forming groove on the nail anvil component corresponds to the position of an anastomotic nail in the nail bin, the driving component pushes the inclined wedge to move forwards, the inclined wedge pushes the nail pushing block to move upwards in the nail storage hole, the nail pushing block pushes the anastomotic nail to pierce the tissue and press the tissue to be bent and formed on the forming groove, then the anastomotic tissue is formed, and the driving component pushes the cutting knife to move forwards along the nail bin cutter groove and the nail anvil cutter groove to cut the tissue between the nail bin cutter groove and the nail anvil cutter groove.

A nail bin supporting sheet is arranged in the nail bin assembly. The side surface of the nail bin cutter groove is provided with a supporting sheet groove. When the nail bin supporting piece is arranged in the supporting piece groove, the upper edge of the nail bin supporting piece is contacted with the upper edge of the supporting piece groove, and the lower edge of the nail bin supporting piece is contacted with the upper bottom surface of the nail bin frame. When tissue is clamped between the nail bin assembly and the nail anvil assembly, the nail bin support sheet blocks the nail bin tissue close to the nail bin cutter groove from moving in the direction of contacting and facing the upper bottom surface of the nail bin frame.

The back upper part of the nail bin supporting piece can be provided with an inserting block. The rear upper part of the nail bin can be provided with a slot. When the nail bin support is arranged in the support groove of the nail bin cutter groove, the insertion block of the nail bin support is inserted into the insertion groove of the nail bin, and the insertion groove of the nail bin prevents the nail bin support from entering the nail bin cutter groove.

The nail bin component can be provided with a nail bin supporting sheet which is arranged on one side of the nail bin cutter groove. The nail bin assembly can also be provided with two nail bin supporting sheets which are respectively arranged at two sides of the nail bin cutter groove.

The lower edge of the nail bin supporting sheet can be provided with a groove. The two ends of the groove are provided with front and rear supporting ends. The lower edges of the front and rear supporting ends of the nail bin supporting sheet are respectively contacted with the upper bottom surface of the nail bin frame. The bottom block of the inclined wedge moves back and forth between the upper bottom surface of the nail bin frame and the groove of the nail bin support plate. The lower edge of the nail bin support piece can also be provided with a front supporting end and a rear supporting end which are in a step shape. The lower edge of the front supporting end of the nail bin supporting sheet is contacted with the upper bottom surface of the nail bin frame, the lower edge of the rear supporting end of the nail bin supporting sheet is contacted with the upper bottom surface of the inclined wedge bottom block, and the lower bottom surface of the bottom block is leaned against the upper bottom surface of the nail bin frame.

The actuating assembly of the endoscopic surgical stapler of the present invention has a stop. The blocking block is arranged at the front part of the nail bin assembly. A swing mechanism is formed between the nail bin supporting sheet and the blocking block by inserting the front shifting block into the front shifting groove. The nail anvil component pushes the rear part of the nail bin supporting sheet, so that the front part of the nail bin supporting sheet pushes the blocking block to swing up and down on the front part of the nail bin component through the swinging mechanism. When the nail bin assembly and the nail anvil assembly are closed, the nail anvil assembly pushes the rear part of the nail bin support sheet to enable the nail bin support sheet to move forwards in the nail bin assembly, the front part of the nail bin support sheet pushes the blocking block to swing upwards in the direction of the front part of the nail bin assembly towards the front part of the nail anvil assembly, and the blocking block is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly. When the nail bin assembly and the nail anvil assembly are opened, the nail anvil assembly pushes the rear part of the nail bin supporting sheet to enable the nail bin supporting sheet to move backwards in the nail bin assembly, and the front part of the nail bin supporting sheet pushes the blocking block to swing downwards in the front part of the nail bin assembly towards the direction of being separated from the front part of the nail anvil assembly.

The front part of the nail anvil component can be provided with a positioning groove. When the nail bin assembly and the nail anvil assembly are closed, the blocking block swings upwards in the direction from the front part of the nail bin assembly to the front part of the nail anvil assembly, so that the blocking block is inserted into the positioning groove in the front part of the nail anvil assembly and then is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly. When the nail bin component and the nail anvil component are opened, the blocking block swings downwards in the front part of the nail bin component towards the direction of separating from the positioning groove in the front part of the nail anvil component.

A cam mechanism is formed by inserting a rear shifting block into a rear cam groove between the nail anvil component and the nail bin supporting sheet. The nail anvil component pushes the rear shifting block through a rear cam slot in the cam mechanism to enable the nail bin supporting piece to move back and forth in the nail bin component. When the nail bin assembly and the nail anvil assembly are closed, the nail anvil assembly pushes the rear shifting block through the rear cam slot in the cam mechanism to enable the nail bin supporting sheet to move forwards in the nail bin assembly, the front part of the nail bin supporting sheet enables the blocking block to upwards swing towards the front part of the nail bin assembly through the swinging mechanism, and the blocking block is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly. When the nail bin assembly and the nail anvil assembly are opened, the nail anvil assembly pushes the rear shifting block through the rear cam groove in the cam mechanism to enable the nail bin supporting sheet to move backwards in the nail bin assembly, and the front part of the nail bin supporting sheet enables the blocking block to swing downwards in the front part of the nail bin assembly towards the direction separated from the front part of the nail anvil assembly through the swinging mechanism.

The side wing of the nail anvil component can be provided with a back cam groove. The rear part of the nail bin supporting piece can be provided with a rear shifting block. The rear shifting block at the rear part of the nail bin supporting sheet is inserted into the rear cam groove at the side wing of the nail anvil component to form a cam mechanism.

Drawings

FIG. 1 is an external view showing the opening of an actuating assembly of a endoscopic closing stapler with a cutting knife attached to a cartridge support according to a first embodiment of the present invention;

FIG. 2 is a front view showing the driving member of FIG. 1;

FIG. 3 is an external view showing the anvil assembly of FIG. 1;

FIG. 4 is an external view showing the cartridge assembly of FIG. 1;

FIG. 5 is an external view showing the magazine rack of FIG. 4;

FIG. 6 is an exterior view of the cartridge assembly of FIG. 4 with the cartridge frame removed;

FIG. 7 is an external view of the cartridge of FIG. 6 with the cartridge support and blocking tab removed;

FIG. 8 is an external view of the cartridge support and stop of FIG. 6;

FIG. 9 is an external view showing the cartridge holder of FIG. 8;

FIG. 10 is an enlarged external view showing the staple of FIG. 6 mounted on top of a staple pusher block;

FIG. 11 is an enlarged external view showing the slanting wedge of FIG. 4;

FIG. 12 is an external view showing another direction of the slanting wedge of FIG. 11;

FIG. 13 is a top view illustrating the closing of the actuator assembly of FIG. 1;

FIG. 14 is a cross-sectional view taken along line 14-14 of FIG. 13;

FIG. 15 is an external view of the actuating assembly of the endoscopic cutting stapler showing the cartridge support of the second embodiment of the present invention opened;

FIG. 16 is an external view showing the closing of the actuator assembly of FIG. 15;

FIG. 17 is an external view of the anvil assembly of FIG. 15;

FIG. 18 is an external view showing the cartridge assembly of FIG. 15;

FIG. 19 is an external view showing the magazine rack of FIG. 18;

FIG. 20 is an exterior view of the cartridge assembly of FIG. 18 shown with the cartridge carrier, cartridge support and blocking block removed;

FIG. 21 is an external view showing another direction of FIG. 20;

FIG. 22 is an external view of the cartridge support and blocking tab of FIG. 15;

FIG. 23 is an external view showing another direction of FIG. 22;

FIG. 24 is an external view showing the cartridge support and blocking tab of FIG. 16;

FIG. 25 is an external view showing another direction of FIG. 24;

FIG. 26 is an external view showing the cartridge frame, cartridge buttress and stop of FIG. 18;

FIG. 27 is an external view showing another direction of FIG. 26;

FIG. 28 is a front elevational view of the drive member of FIG. 15;

FIG. 29 is an enlarged external view showing the wedges of FIG. 20;

FIG. 30 is an external view showing another direction of the slanting wedge of FIG. 29;

FIG. 31 is an external view of the actuating assembly of the endoscopic cutting stapler showing the third embodiment of the staple cartridge support of the present invention when opened;

FIG. 32 is an external view showing a state in which the execution unit shown in FIG. 31 is closed;

FIG. 33 is an external view of the anvil assembly of FIG. 31;

FIG. 34 is an external view showing the cartridge assembly of FIG. 31;

FIG. 35 is a top view of the staple cartridge assembly of FIG. 34;

FIG. 36 is a cross-sectional view taken generally at 36-36 of FIG. 35;

FIG. 37 is a cross-sectional view taken along line 37-37 of FIG. 35;

FIG. 38 is an external view showing the magazine rack of FIG. 34;

FIG. 39 is an exterior view of the cartridge frame of FIG. 34 shown removed;

FIG. 40 is an external view of the cartridge support and bottom block of the wedge of the third embodiment of FIG. 39;

FIG. 41 is an external view showing the back side of the bottom block in the cartridge buttress and ramp wedge of FIG. 40;

FIG. 42 is a bottom view showing the staple cartridge of FIG. 34;

FIG. 43 is a sectional view taken along line 43-43 of FIG. 42;

fig. 44 is a sectional view 44-44 showing fig. 42.

Detailed Description

Preferred embodiments of the cartridge support of the laparoscopic surgical stapler of the present invention are set forth below, by way of example, in conjunction with the appended drawings. It is to be understood that some or all of the figures are diagrammatic illustrations for purposes of illustrating a preferred embodiment of the invention and do not depict the actual dimensions of the portions shown. The embodiments that achieve the above and other objects and advantages of the present invention will be more clearly understood by reference to the detailed description of the preferred embodiments. In the drawings and the following description, the term "posterior" refers to a location proximal to the operator of the laparoscopic surgical stapler, while the term "anterior" refers to a location distal to the operator of the laparoscopic surgical stapler; the term "left" refers to the left side of an endoscopic surgical stapler operator, while the term "right" refers to the right side of an endoscopic surgical stapler operator; the term "upper" refers to above the operator of the endoscopic surgical stapler, while the term "lower" refers to below the operator of the endoscopic surgical stapler. Other positional and orientational terms may be understood in light of the drawings and the following description. In order to highlight the figures and the description of the cartridge support and the related components of the endoscopic surgical stapler of the present invention, other components are not described in detail in the drawings. Reference is made to the patents cited in this specification and other documents related thereto, as well as to the Chinese patent "multipurpose endoscopic surgical instrument" (application number: 201911292988.2), for the structure, installation, use and operation of the components of various endoscopic surgical staplers.

FIGS. 1-14 depict a first embodiment of the present invention of a cartridge buttress in a laparoscopic closing stapler with a cutting knife attached.

An executing component 1 of a cavity mirror closing anastomat (not shown) provided with a cutting knife is provided with a nail box component 2 and a nail anvil component 3 (shown in figure 1). The actuating assembly 1 has a drive member 4 mounted therein. The driving member 4 is provided with a cutting blade 5 (see fig. 2). Cartridge assembly 2 includes a cartridge 6, a cartridge holder 7, a ramp 8, and a front-to-back cartridge knife slot 9 (see fig. 4-7). The magazine 6 is mounted on a magazine carrier 7. The wedges 8 have a bottom block 10 (see fig. 11 and 12). The lower bottom surface 11 of the bottom block 10 rests on the upper bottom surface 12 of the magazine frame 7. The bottom block 10 can be moved back and forth between the lower bottom surface 13 of the magazine 6 and the upper bottom surface 12 of the magazine carrier 7. Three adjacent rows of staple storage holes 15 are staggered on the staple cartridge tissue contacting surface 14 of the staple cartridge 6. Staples 16 and staple pusher blocks 17 are mounted in the staple storage holes 15 (see fig. 7). Staples 16 are mounted on top of a staple pusher block 17 (see fig. 10). The anvil assembly 3 has a front and rear anvil pocket 18 (see fig. 3). The anvil tissue contact surface 19 of the anvil assembly 3 is staggered with three adjacent rows of concave forming grooves 20. The driving member 4 pushes the cutting knife 5 to move along the cartridge knife channel 9 and the anvil knife channel 18. When tissue is clamped between the cartridge component 2 and the anvil component 3 (see fig. 13 and 14), the forming grooves 20 on the anvil component 3 correspond to the positions of the staples 16 in the cartridge 6, the driving component 4 pushes the inclined wedges 8 to move forward, the inclined wedges 8 push the staple pushing blocks 17 to move upward in the staple storage holes 15, the staple pushing blocks 17 push the staples 16 to pierce the tissue and press the tissue against the forming grooves 20 to bend and form the formed stapled tissue, and the driving component 4 pushes the cutting knife 5 to move forward along the cartridge knife groove 9 and the anvil knife groove 18 to cut the tissue between the cartridge knife groove 9 and the anvil knife groove 18.

The cartridge module 2 has a cartridge support 21 (see fig. 6). The magazine 6 has a support groove 22 (see fig. 7) on the side of the magazine knife 9. The lower side of the cartridge support 21 has front and rear support ends 23 and 24 stepped forward and rearward (see fig. 9). The rear upper part of the nail bin support 21 is provided with an inserting block 38. The rear upper portion of the magazine 6 has a slot 37 (see fig. 7). When the cartridge support 21 is mounted in the support groove 22 on one side of the cartridge pocket 9 (see FIGS. 6 and 14), the insert 38 of the cartridge support 21 is inserted into the insert groove 37 of the cartridge 6, the insert groove 37 of the cartridge 6 prevents the cartridge support 21 from entering the cartridge pocket 9, the lower edge 25 of the front support end 23 of the cartridge support 21 contacts the upper bottom surface 12 of the cartridge holder 7, the lower edge 26 of the rear support end 24 of the cartridge support 21 contacts the upper bottom surface 27 of the bottom block 10 of the wedge 8, the lower bottom surface 11 of the bottom block 10 rests on the upper bottom surface 12 of the cartridge holder 7, and the upper edge 28 of the cartridge support 21 contacts the upper edge 29 of the support groove 22. When clamping tissue between the cartridge assembly 2 and the anvil assembly 3 (see fig. 14), the cartridge support 21 blocks the cartridge tissue contacting surface 14 adjacent to the cartridge knife 9 from moving in the direction of the upper bottom surface 12 of the cartridge frame 7.

When the nail bin component 2 and the nail anvil component 3 clamp tissues, the nail bin supporting sheet 21 blocks the clamped tissues to press the nail bin tissues close to the nail bin cutter groove 9 to move towards the direction of the upper bottom surface 12 of the nail bin frame 7, so that the anastomotic nails 16 can be prevented from extending out of the nail storage holes 15 and sticking on the clamped tissues, and at the moment, if the nail bin component 2 and the nail anvil component 3 are opened, the tissues can not take the anastomotic nails 16 out of the nail storage holes 15, so that the endoscopic surgical anastomat can normally complete the operation of the anastomotic tissues, and the misoperation is avoided; moreover, when the bottom block 10 of the inclined wedge 8 moves between the lower bottom surface 13 of the nail bin 6 and the upper bottom surface 12 of the nail bin frame 7, the nail bin support 21 can not only avoid damaging fine structures between adjacent nail storage holes 15 which constrain the staples 16 in the nail bin 6, but also avoid the position deviation of the staples 16 arranged in the nail storage holes 15, so that the staples 16 can accurately press against the forming groove 20 to be bent and formed, the quality of bending and forming the staples 16 is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

There is a stop 30 in the actuator assembly 1 (see fig. 1). A blocker 30 is mounted to the front of the cartridge assembly 2. A swing mechanism (see figure 8) is formed between the nail bin support 21 and the blocking block 30 by inserting the front shifting block 31 into the front shifting groove 32. The nail anvil component 3 pushes the rear part of the nail bin support 21, so that the front part of the nail bin support 21 pushes the blocking block 30 to swing up and down on the front part of the nail bin component 2 through the swinging mechanism. When the cartridge component 2 and the anvil component 3 are closed (see fig. 13 and 14), the anvil component 3 pushes the rear portion of the cartridge support 21 so that the cartridge support 21 moves forward in the cartridge component 2, and the front portion of the cartridge support 21 pushes the blocking block 30 to swing upward in the direction from the front portion of the cartridge component 2 to the front portion of the anvil component 3, so that the blocking block 30 is blocked between the front portion of the cartridge component 2 and the front portion of the anvil component 3. When the space between the nail box component 2 and the nail anvil component 3 is opened (see fig. 1), the nail anvil component 3 pushes the rear part of the nail box support 21 so that the nail box support 21 moves backwards in the nail box component 2, and the front part of the nail box support 21 pushes the blocking block 30 to swing downwards at the front part of the nail box component 2 towards the direction of separating from the front part of the nail anvil component 3.

The front part of the anvil assembly 3 is provided with a positioning slot 33 (see fig. 3). When the cartridge assembly 2 and the anvil assembly 3 are closed (see fig. 13 and 14), the blocking block 30 swings upward in the direction from the front of the cartridge assembly 2 to the front of the anvil assembly 3, so that the blocking block 30 is inserted into the positioning groove 33 at the front of the anvil assembly 3 and is stopped between the front of the cartridge assembly 2 and the front of the anvil assembly 3. When the space between the cartridge component 2 and the anvil component 3 is opened, the blocking block 30 swings downwards at the front part of the cartridge component 2 towards the direction of disengaging from the positioning groove 33 at the front part of the anvil component 3.

When the nail bin component 2 and the nail anvil component 3 clamp tissues and are anastomotic, the blocking block 30 can prevent the tissues from being extruded out of the anastomotic region of the nail bin component 2 and the nail anvil component 3, and the blocking block 30 is inserted into the positioning groove 33 at the front part of the nail anvil component 3 to ensure that the forming groove 20 on the nail anvil component 3 corresponds to the anastomotic nail 16 in the nail bin component 2, so that the complete operation of anastomotic tissues can be completed at one time, the quality of bending and forming of the anastomotic nail 16 is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

The side wings 34 of the anvil assembly 3 are provided with rear cam slots 35 (see fig. 3). The rear part of the nail box support 21 is provided with a rear shifting block 36 (see figure 9). The rear shifting block 36 at the rear of the cartridge support 21 is inserted into the rear cam slot 35 at the side wing 34 of the anvil assembly 3 to form a cam mechanism (see fig. 1). The anvil component 3 pushes the rear shifting block 36 through the rear cam slot 35 in the cam mechanism to make the cartridge support 21 move back and forth in the cartridge component 2. When the nail cartridge component 2 and the nail anvil component 3 are closed (see fig. 13 and 14), the nail anvil component 3 pushes the rear shifting block 36 through the rear cam slot 35 in the cam mechanism to make the nail cartridge support 21 move forward in the nail cartridge component 2, the front part of the nail cartridge support 21 makes the blocking block 30 swing upward in the direction from the front part of the nail cartridge component 2 to the front part of the nail anvil component 3 through the swing mechanism, and the blocking block 30 is blocked between the front part of the nail cartridge component 2 and the front part of the nail anvil component 3. When the space between the nail box component 2 and the nail anvil component 3 is opened (see fig. 1), the nail anvil component 3 pushes the rear shifting block 36 through the rear cam slot 35 in the cam mechanism to make the nail box support 21 move backwards in the nail box component 2, and the front part of the nail box support 21 makes the blocking block 30 swing downwards in the front part of the nail box component 2 towards the direction of disengaging from the front part of the nail anvil component 3 through the swing mechanism.

Because the blocking block 30 acts along with the opening and closing between the nail bin component 2 and the nail anvil component 3, a new control mechanism and an operation program do not need to be added in the operation component, and when too much tissue is clamped between the nail bin component 2 and the nail anvil component 3, the blocking block can prompt that the nail bin component 2 and the nail anvil component 3 cannot be completely closed, so that misoperation can be avoided, and the technical effects of reducing the product cost, reducing the operation time and improving the operation quality are achieved.

FIGS. 15-30 depict a second embodiment of the present invention in a laparoscopic cutting stapler with a staple cartridge buttress.

Among the actuating assembly 41 of the endoscopic cutting stapler (not shown) are a cartridge assembly 42 and an anvil assembly 43 (see FIG. 15). The actuator assembly 41 has a drive member 44 mounted therein. The driving member 44 is provided with a cutting blade 5 (see fig. 28). Cartridge assembly 42 includes a cartridge 45, a cartridge shelf 46, wedges 47, and a front-to-back cartridge knife slot 48 (fig. 18-21). The staple cartridge 45 is mounted on a cartridge rack 46. The wedges 47 have a bottom block 49 (see fig. 29 and 30). The lower surface 50 of the bottom block 49 rests on the upper surface 51 of the magazine frame 46 (see fig. 19-21). The bottom block 49 can move back and forth between the lower bottom surface 52 of the magazine 45 and the upper bottom surface 51 of the magazine rack 46. Three adjacent rows of staple storage holes 54 are staggered on the staple cartridge tissue contact surface 53 on both sides of the staple cartridge knife channel 48 of the staple cartridge 45 (see fig. 18). Staples 16 and staple pusher blocks 55 are mounted within staple storage holes 54 (see fig. 20 and 21). Staples 16 are mounted on top of the staple pusher block 55. The anvil assembly 43 has a forward and rearward anvil knife slot 56 therein (see FIG. 17). Three adjacent rows of concave forming grooves 58 are staggered on the anvil tissue contact surface 57 on both sides of the anvil slot 56 of the anvil assembly 43. The drive member 44 pushes the cutting knife 5 along the cartridge knife channel 48 and the anvil knife channel 56. When tissue is clamped between the cartridge assembly 42 and the anvil assembly 43 (see fig. 16), the forming grooves 58 on the anvil assembly 43 correspond to the positions of the staples 16 in the cartridge 45, the driving member 44 pushes the wedges 47 to move forward, the wedges 47 push the staple pushing blocks 55 to move upward in the staple storage holes 54, the staple pushing blocks 55 push the staples 16 to pierce the tissue and press the tissue against the forming grooves 58 to bend and form the stapled tissue, and the driving member 44 pushes the cutting knife 5 to move forward along the cartridge knife channel 48 and the anvil knife channel 56 to cut the tissue between the cartridge knife channel 48 and the anvil knife channel 56.

As shown in FIGS. 18-27, there are two cartridge supports 59 and 60 in cartridge assembly 42. The magazine 45 has

support grooves

61 and 62 on both sides of the magazine pocket 48. The lower edges of the cartridge supports 59 and 60 have front and rear stepped support ends 63, 64, 65 and 66. The upper rear portions of the cartridge supports 59 and 60 have

inserts

89 and 90, respectively. The rear upper portion of the magazine 45 has

slots

39 and 40 on either side of a magazine pocket 48. When cartridge supports 59 and 60 are mounted in

support slots

61 and 62 on either side of cartridge pocket 48, respectively, insert blocks 89 and 90 of cartridge supports 59 and 60 are inserted into

insert slots

39 and 40, respectively, of cartridge 45,

insert slots

39 and 40 of cartridge 45 prevent cartridge supports 59 and 60 from entering cartridge pocket 48,

lower edges

67 and 68 of front support ends 63 and 64 of cartridge supports 59 and 60, respectively, contact upper bottom surface 51 of cartridge frame 46,

lower edges

69 and 70 of rear support ends 65 and 66 of cartridge supports 59 and 60, respectively, contact upper bottom surfaces 71 and 72 of bottom block 49 of wedge 47, lower bottom surface 50 of bottom block 49 rests on upper bottom surface 51 of cartridge frame 46, and

upper edges

73 and 74 of cartridge supports 59 and 60 contact

upper edges

75 and 76 of

support slots

61 and 62, respectively. When clamping tissue between cartridge assembly 42 and anvil assembly 43,

cartridge support plates

59 and 60 block the movement of cartridge tissue contacting surface 53 adjacent cartridge knife channel 48 in the direction of upper bottom surface 51 of cartridge rack 46.

When the nail bin assembly 42 and the nail anvil assembly 43 clamp tissues, the nail bin support sheets 59 and 60 prevent the clamped tissues from pressing the nail bin tissue contact surface 53 close to the nail bin cutter groove 48 to move towards the direction of the upper bottom surface 51 of the nail bin frame 46, so that the situation that the staples 16 extend out of the staple storage holes 54 and are stuck on the clamped tissues can be avoided, at the moment, if the nail bin assembly 42 and the nail anvil assembly 43 are opened, the tissues cannot take the staples 16 out of the staple storage holes 54, the endoscopic surgical stapler can normally finish the operation of anastomosing the tissues, and misoperation is avoided; moreover, when the bottom block 49 of the inclined wedge 47 moves between the lower bottom surface 52 of the staple cartridge 45 and the upper bottom surface 51 of the staple cartridge frame 46, the staple cartridge supporting sheets 59 and 60 can not only avoid damaging the fine structure between the adjacent staple storage holes 54 of the staple cartridge 45 for restraining the staples 16, but also avoid the position deviation of the staples 16 installed in the staple storage holes 54, so that the staples 16 can accurately press against the forming groove 58 for bending forming, the quality of bending forming of the staples 16 is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

There is a stop 77 in the actuator assembly 41 (see fig. 15 and 16). A blocker 77 is mounted to the front of the cartridge assembly 42 (see FIG. 18). The swing mechanism is formed by inserting the front shifting blocks 78 and 79 into the

front shifting slots

80 and 81 between the cartridge supports 59 and 60 and the stop block 77 (see fig. 22-25). The front portions of the cartridge supports 59 and 60 are swung up and down at the front portion of the cartridge assembly 42 by a swing mechanism pushing a stop block 77. The anvil assembly 43 has a detent 82 at the front and

rear cam slots

85 and 86 at the wings 83 and 84, respectively (see FIG. 17). The rear portions of the cartridge supports 59 and 60 have

rear paddles

87 and 88, respectively (see FIGS. 22-25). Rear dials 87 and 88 on the rear of

cartridge support plates

59 and 60 are inserted into

rear cam slots

85 and 86 at side wings 83 and 84 of anvil assembly 43 to form a cam mechanism (see FIGS. 15 and 16). Anvil assembly 43 is moved back and forth within cartridge assembly 42 by

rear cam slots

85 and 86 in a cam mechanism pushing rear pusher blocks 87 and 88. When cartridge assembly 42 and anvil assembly 43 are closed (see FIG. 16), anvil assembly 43 pushes back poking

blocks

87 and 88 through

back cam slots

85 and 86 in the cam mechanism to move

cartridge support plates

59 and 60 forward in cartridge assembly 42, the front portions of

cartridge support plates

59 and 60 swing up blocking block 77 in the direction of the front portion of cartridge assembly 42 toward the front portion of anvil assembly 43 through the swing mechanism, and blocking block 77 is inserted into positioning slot 82 in the front portion of anvil assembly 43 and is held back between the front portion of cartridge assembly 42 and the front portion of anvil assembly 43. When opening between cartridge assembly 42 and anvil assembly 43 (see FIG. 15), anvil assembly 43 pushes rear pusher blocks 87 and 88 through

rear cam slots

85 and 86 in the cam mechanism to move

cartridge support plates

59 and 60 rearward within cartridge assembly 42, and the front portions of

cartridge support plates

59 and 60 cause blocking block 77 to swing downward at the front portion of cartridge assembly 42 in a direction away from positioning slot 82 at the front portion of anvil assembly 43 by the swing mechanism.

When the nail bin assembly 42 and the nail anvil assembly 43 clamp tissues and anastomose the tissues, the blocking block 77 can prevent the tissues from being extruded out of anastomotic regions of the nail bin assembly 42 and the nail anvil assembly 43, and the blocking block 77 is inserted into the positioning groove 82 in the front part of the nail anvil assembly 43 to ensure that the forming groove 58 on the nail anvil assembly 43 corresponds to the position of the anastomotic nail 16 in the nail bin assembly 42, so that the complete operation of anastomotic tissues can be completed at one time, the quality of bending and forming the anastomotic nail 16 is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved. Because the blocking block 77 moves along with the opening and closing between the nail bin assembly 42 and the nail anvil assembly 43, a new control mechanism and an operation program do not need to be added into the operation assembly, and when too much tissue is clamped between the nail bin assembly 42 and the nail anvil assembly 43, the situation that the nail bin assembly 42 and the nail anvil assembly 43 cannot be completely closed is prompted, so that misoperation can be avoided, and the technical effects of reducing the product cost, reducing the operation time and improving the operation quality are achieved.

Other technical features, technical aspects and technical effects not described or illustrated in the second embodiment may refer to those described and illustrated in the first embodiment.

FIGS. 31-44 depict a third embodiment of the present invention in a laparoscopic cutting stapler.

Among the implement assembly 91 of a laparoscopic cutting stapler (not shown) are a cartridge assembly 92 and an anvil assembly 122 (see FIGS. 31 and 32). The actuator assembly 91 has a drive member 44 mounted therein. Cartridge assembly 92 includes a cartridge 93, a cartridge holder 94, wedges 47, and a forward-rearward cartridge knife channel 95 (see fig. 34-39). The staple cartridge 93 is mounted on a cartridge carrier 94. The bottom block 49 of the wedges 47 can move back and forth between the lower bottom surface 97 of the cartridge 93 and the upper bottom surface 96 of the cartridge carriage 94. Three adjacent rows of staple storage holes 99 are staggered on the staple cartridge tissue contact surface 98 on both sides of the staple cartridge knife channel 95 of the staple cartridge 93 (see fig. 34). Staples 16 and staple pusher 55 are installed in staple storage holes 99. Anvil assembly 122 has a forward and rearward anvil pocket 123 therein (see FIG. 33). Three adjacent rows of concave forming grooves 125 are arranged on the anvil tissue contact surface 124 on both sides of the anvil knife slot 123 of the anvil assembly 122 in a staggered manner. The driving member 44 pushes the cutting knife 5 to move along the magazine knife slot 95 and the anvil knife slot 123. When tissue is clamped between the cartridge component 92 and the anvil component 122 (see fig. 32), the forming grooves 125 on the anvil component 122 correspond to the positions of the staples 16 in the cartridge 93, the driving member 44 pushes the wedges 47 to move forward, the wedges 47 push the staple pushing blocks 55 to move upward in the staple storage holes 99, the staple pushing blocks 55 push the staples 16 to pierce the tissue and press the tissue against the forming grooves 125 to bend and form the stapled tissue, and the driving member 44 pushes the cutting knife 5 to move forward along the cartridge knife channel 95 and the anvil knife channel 123 to cut the tissue between the cartridge knife channel 95 and the anvil knife channel 123.

Cartridge assembly 92 has two cartridge supports 100 and 101 (see fig. 39). The magazine 93 has

support grooves

102 and 103 on both sides of the magazine knife 95 (see fig. 42 to 44). The cartridge supports 100 and 101 have

recesses

104 and 105, respectively (see fig. 40 and 41). The

recesses

104 and 105 have front and rear support ends 106, 107, 108 and 109, respectively, at opposite ends thereof. The rear upper portions of the cartridge supports 100 and 101 have

inserts

116 and 117, respectively. The rear upper portion of the magazine 93 has

insertion grooves

114 and 115 on both sides of the magazine knife 95. When the cartridge supports 100 and 101 are respectively mounted in the

support grooves

102 and 103 on both sides of the cartridge pocket 95 (see fig. 35 to 37 and 42), the

insertion pieces

116 and 117 of the cartridge supports 100 and 101 are respectively inserted into the

insertion grooves

114 and 115 of the cartridge 93, the

insertion grooves

114 and 115 of the cartridge 93 prevent the cartridge supports 100 and 101 from entering the cartridge pocket 95, and the

lower sides

110, 111, 112 and 113 of the front and rear support ends 106, 107, 108 and 109 of the cartridge supports 100 and 101 respectively contact the upper bottom surface 96 of the cartridge holder 94; at this point, bottom block 49 of wedge 47 is able to move back and forth between upper bottom surface 96 of cartridge rack 94 and recesses 104 and 105 of cartridge supports 100 and 101. When clamping tissue between cartridge assembly 92 and anvil assembly 122,

cartridge support plates

100 and 101 block the movement of cartridge tissue contacting surface 98 adjacent cartridge knife channel 95 in the direction of upper bottom surface 96 of cartridge rack 94.

When the nail bin assembly 92 and the nail anvil assembly 122 clamp tissues, the nail bin support sheets 100 and 101 prevent the clamped tissues from pressing the nail bin tissue contact surface 98 close to the nail bin knife channel 95 to move towards the direction of the upper bottom surface 96 of the nail bin frame 94, so that the situation that the staples 16 extend out of the staple storage holes 99 and are stuck on the clamped tissues can be avoided, at the moment, if the nail bin assembly 92 and the nail anvil assembly 122 are opened, the tissues cannot take the staples 16 out of the staple storage holes 99, the endoscopic surgical stapler can normally complete the operation of the anastomotic tissues, and misoperation is avoided; moreover, when the bottom block 49 of the inclined wedge 47 moves between the lower bottom surface 97 of the staple cartridge 93 and the upper bottom surface 96 of the staple cartridge frame 94, the staple cartridge supporting sheets 100 and 101 can not only avoid damaging the fine structure between the adjacent staple storage holes 99 of the staple cartridge 93 for restraining the staples 16, but also avoid the position deviation of the staples 16 installed in the staple storage holes 99, so that the staples 16 can accurately press against the forming groove 125 for bending forming, the quality of bending forming of the staples 16 is improved, and the technical effects of reducing the operation time and improving the operation quality are achieved.

Other technical features, technical aspects and technical effects not described or illustrated in the third embodiment may refer to the description and illustration in the first and second embodiments.

The technical characteristics and technical schemes of various blocking mechanisms in the endoscopic cutting anastomat of the three embodiments can be implemented independently, alternatively or in combination to achieve the best technical effect.

Claims

1. A nail bin supporting sheet of an endoscopic surgical anastomat is provided, wherein an executing component of the endoscopic surgical anastomat is provided with a nail bin component and a nail anvil component; installing a driver in the actuator assembly; a cutting knife is arranged on the driving piece; the nail bin assembly is provided with a nail bin, a nail bin frame, an inclined wedge and a nail bin cutter groove in the front-back direction; the nail bin is arranged on the nail bin frame; the inclined wedge is provided with a bottom block, the lower bottom surface of the bottom block leans against the upper bottom surface of the nail bin frame, and the bottom block moves back and forth between the lower bottom surface of the nail bin and the upper bottom surface of the nail bin frame; a plurality of nail storage holes are arranged on a nail bin tissue contact surface of the nail bin in a staggered manner, and anastomotic nails and nail pushing blocks are installed in the nail storage holes; the anastomosis nail is arranged at the top of the nail pushing block; a plurality of concave forming grooves are arranged on the tissue contact surface of the nail anvil component in a staggered manner; a nail anvil cutter groove in the front and back direction is arranged in the nail anvil component; a driving piece pushes the cutting knife to move along the nail box knife groove and the nail anvil knife groove; when a tissue is clamped between the nail bin component and the nail anvil component, the forming grooves on the nail anvil component correspond to the positions of anastomosis nails in the nail bin, the driving component pushes the inclined wedges to move forwards, the inclined wedges push the nail pushing block to move upwards in the nail storage hole, the nail pushing block pushes the anastomosis nails to pierce the tissue to press the forming grooves to bend and form the anastomosis tissue, and the driving component pushes the cutting knife to move forwards along the nail bin cutter groove and the nail anvil cutter groove to cut the tissue between the nail bin cutter groove and the nail anvil cutter groove;

the method is characterized in that: a nail bin supporting sheet is arranged in the nail bin assembly; the side surface of the nail bin knife groove is provided with a support plate groove; when the nail bin supporting piece is arranged in the supporting piece groove, the upper edge of the nail bin supporting piece is contacted with the upper edge of the supporting piece groove, and the lower edge of the nail bin supporting piece is contacted with the upper bottom surface of the nail bin frame;

when the tissue is clamped between the nail bin component and the nail anvil component, the nail bin support sheet blocks the nail bin tissue close to the nail bin cutter groove from moving in the direction of facing the upper bottom surface of the nail bin frame.

2. The cartridge support of an endoscopic surgical stapler of claim 1, wherein there is one said cartridge support in said cartridge assembly, said cartridge support being mounted on a single side of said cartridge knife channel.

3. The staple cartridge support of an endoscopic surgical stapler of claim 1, wherein there are two staple cartridge supports in said staple cartridge assembly, and said two staple cartridge supports are respectively installed at both sides of said staple cartridge slot.

4. The staple cartridge support of the endoscopic surgical stapler according to claim 1, wherein the staple cartridge support has a groove at the lower side thereof, and the groove has front and rear support ends at both ends thereof; the lower edges of the front and rear supporting ends of the nail bin supporting sheet are respectively contacted with the upper bottom surface of the nail bin frame; the bottom block of the inclined wedge moves back and forth between the upper bottom surface of the nail bin frame and the groove of the nail bin supporting sheet.

5. The staple cartridge support of the endoscopic surgical stapler of claim 1, wherein the lower side of the staple cartridge support has front and rear support ends which are stepped front and rear; the lower edge of the front supporting end of the nail bin supporting sheet is in contact with the upper bottom surface of the nail bin frame, the lower edge of the rear supporting end of the nail bin supporting sheet is in contact with the upper bottom surface of the bottom block of the inclined wedge, and the lower bottom surface of the bottom block is leaned against the upper bottom surface of the nail bin frame.

6. The staple cartridge support of an endoscopic surgical stapler of claim 1, wherein the rear upper portion of said staple cartridge support has an insert block; the rear upper part of the nail bin is provided with an inserting groove; when the nail bin support piece is arranged in the support piece groove of the nail bin cutter groove, the insertion block of the nail bin support piece is inserted into the insertion groove of the nail bin, and the insertion groove of the nail bin prevents the nail bin support piece from entering the nail bin cutter groove.

7. The staple cartridge buttress of an endoscopic surgical stapler of claim 1, wherein said actuation assembly includes a stop; the blocking block is arranged at the front part of the nail cartridge assembly; a swing mechanism is formed between the nail bin supporting sheet and the blocking block by inserting a front shifting block into a front shifting groove; the nail anvil component pushes the rear part of the nail bin support plate, so that the front part of the nail bin support plate pushes the blocking block to swing up and down on the front part of the nail bin component through the swing mechanism; when the nail bin assembly and the nail anvil assembly are closed, the nail anvil assembly pushes the rear part of the nail bin support sheet to enable the nail bin support sheet to move forwards in the nail bin assembly, the front part of the nail bin support sheet pushes the blocking block to swing upwards in the direction from the front part of the nail bin assembly to the front part of the nail anvil assembly, and the blocking block is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly; when the nail bin assembly and the nail anvil assembly are opened, the nail anvil assembly pushes the rear part of the nail bin supporting sheet to enable the nail bin supporting sheet to move backwards in the nail bin assembly, and the front part of the nail bin supporting sheet pushes the blocking block to swing downwards in the front part of the nail bin assembly towards the direction of being separated from the front part of the nail anvil assembly.

8. The staple cartridge support of the endoscopic surgical stapler of claim 7, wherein the front portion of the anvil assembly has a positioning slot; when the nail bin assembly and the nail anvil assembly are closed, the blocking block swings upwards in the direction from the front part of the nail bin assembly to the front part of the nail anvil assembly, so that the blocking block is inserted into the positioning groove in the front part of the nail anvil assembly and then is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly; when the nail bin component and the nail anvil component are opened, the blocking block swings downwards in the front part of the nail bin component towards the direction of separating from the positioning groove in the front part of the nail anvil component.

9. The staple cartridge support of the endoscopic surgical stapler according to claim 7, wherein a cam mechanism is formed by inserting a rear shifting block into a rear cam groove between the staple cartridge assembly and the staple cartridge support; the nail anvil component pushes the rear shifting block through the rear cam slot in the cam mechanism to enable the nail bin supporting sheet to move back and forth in the nail bin component; when the nail bin assembly and the nail anvil assembly are closed, the nail anvil assembly pushes the rear shifting block through a rear cam slot in the cam mechanism to enable the nail bin supporting sheet to move forwards in the nail bin assembly, the front part of the nail bin supporting sheet enables the blocking block to upwards swing in the direction from the front part of the nail bin assembly to the front part of the nail anvil assembly through the swinging mechanism, and the blocking block is blocked between the front part of the nail bin assembly and the front part of the nail anvil assembly; when the nail bin assembly and the nail anvil assembly are opened, the nail anvil assembly pushes the rear shifting block through the rear cam groove in the cam mechanism to enable the nail bin supporting sheet to move backwards in the nail bin assembly, and the front part of the nail bin supporting sheet enables the blocking block to swing downwards in the front part of the nail bin assembly towards the direction separated from the front part of the nail anvil assembly through the swinging mechanism.

10. The staple cartridge supporting piece of the endoscopic surgical anastomat of claim 9, wherein the side wing of the staple cartridge component is provided with the rear cam groove, the rear shifting block is arranged at the rear part of the staple cartridge supporting piece, and the rear shifting block at the rear part of the staple cartridge supporting piece is inserted into the rear cam groove at the side wing of the staple cartridge component to form the cam mechanism.