CN211674375U

CN211674375U - High-position tibia osteotomy distractor

Info

Publication number: CN211674375U
Application number: CN201922319026.3U
Authority: CN
Inventors: 樊沛; 李莉; 张宇
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-16
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a shin bone high-order cuts bone spreader, its technical scheme main points are including the spreader body, be provided with the part that struts that is used for strutting the cut bone gap on the spreader body, it is provided with two to strut the part, two strut the part can with cut bone gap about both ends respectively the butt and two strut leave the operation region that supplies the operation to use between the part, strut the part including with cut the fixed part of bone gap department one side bone butt with can remove the removal portion of strutting the opposite side bone of cut bone gap department, this internal drive arrangement that is used for two strutting parts of simultaneous drive to strut or closed that is provided with of spreader, this spreader can strut the both ends of cutting the bone gap simultaneously, fully exhibit central zone.

Description

High-position tibia osteotomy distractor

Technical Field

The utility model relates to a device that struts is cut bone portion to gonitis shin bone, more specifically says, it relates to a high-order bone distraction ware of cutting of shin bone.

Background

High-order osteotomy of shin bone is the operation treatment that is used for knee joint osteoarthritis, and the doctor of main sword cuts the oblique type of shin bone at first, and the rethread spreader inserts cuts the bone department and struts certain distance, cuts the internal fixation that needs to carry out the shin bone after the bone is passed: generally, the steel plate is inserted for reinforcement, and finally, the incision is sutured, thereby completing the operation.

However, the existing distractor distracts one end of the osteotomy gap, so that the surgical field is very limited, and the tibia is easy to tilt backwards due to the fact that one side of the existing distractor is distracted, and if the existing distractor is moved to the middle of the osteotomy gap to distract, implantation of a subsequent steel plate is inconvenient.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a shin bone high level cuts bone spreader, this spreader can strut the both ends of cutting the bone gap simultaneously, fully shows central zone.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a shin bone high-order cuts bone spreader, including the spreader body, be provided with the part that struts that is used for strutting the osteotomy gap on the spreader body, strut the part and be provided with two, strut the part and can strut the both ends respectively butt and two and strut and leave the operation region that supplies the operation to use between the part with cutting the left and right sides in osteotomy gap for two, strut the part including with cut the fixed part of the butt of one side bone of osteotomy gap department and can remove the removal portion of strutting the opposite side bone of osteotomy gap department, this internal drive arrangement that is used for driving two components of strutting simultaneously and strut or closed that struts.

The utility model discloses further set up to: the utility model discloses a pair of ' scissors ' driving device, including the dead lever that is used for connecting two fixed parts and the connecting rod that is used for connecting two moving parts and the drive structure that the dead lever was kept away from or is close to drive connecting rod, the dead lever is used for connecting two fixed parts length direction's one end, the connecting rod is used for connecting the one end of two moving part length directions, the middle part of fixed part and moving part are the setting of arc structure along its length direction, the articulated setting in middle part of fixed part and moving part is "scissors" structure setting, drive arrangement is including the dead lever.

The utility model discloses further set up to: the driving structure comprises a screw rod, a through hole and a threaded through hole, wherein the through hole is formed in the fixed rod and is used for the screw rod to penetrate through, the threaded through hole is formed in the connecting rod and is matched with the screw rod, the connecting rod can be far away from or close to the fixed rod in the rotating process of the screw rod, and a rotating handle is arranged at one end, far away from the threaded through hole, of the screw rod.

The utility model discloses further set up to: the fixed part is provided with a fixed rod, the fixed rod is fixed on the fixed part, and the fixed rod is fixed on the fixed part.

The utility model discloses further set up to: the utility model discloses a limit structure, including fixed part and removal portion, fixed part and removal portion all become telescopic rod structure and set up, the fixed part is including fixed shell and the fixed plate of sliding connection in fixed shell, dead lever and fixed plate fixed connection, removal portion is including removing the shell and sliding the movable plate of connecting in removing the shell, connecting rod and movable plate fixed connection, all be provided with the limit structure of restriction movable plate and the fixed plate stroke of sliding on removal portion and the fixed part, limit structure including set up on fixed shell orientation dead lever one side with remove the shell towards the last moving channel of connecting rod one side and be located the moving channel and with the fixed plate in the moving channel or the stop screw of movable plate spiro union and set up the screw hole that supplies the stop screw spiro union on fixed plate and movable plate.

The utility model discloses further set up to: the driving device comprises a moving rod for driving the moving part to be far away from or close to the fixed part and a driving part for driving the moving rod to move, and a through hole for the moving rod to pass through is formed in the fixed part.

The utility model discloses further set up to: the utility model discloses a ware, including strutting ware body fixed connection's guide post and strutting ware body, the drive part including with strut ware body fixed connection's guide post and with strut ware body rotation be connected the lead screw and with lead screw threaded connection's connecting plate, the removal portion was kept away from to the carriage release lever one end with the connecting plate slide and be connected the setting, be provided with on the ware body and supply the carriage release lever to pass and supply the groove of sliding that the carriage release lever slided, the groove of sliding extends the setting along strutting ware body transverse direction, be provided with the spacing block who is used for restricting fixed carriage release lever to slide on the groove of sliding, the one end that the fixed part was kept away from to the lead screw is provided with and can.

The utility model discloses further set up to: the limiting component comprises a threaded rod used for limiting the movement of the moving rod and a sliding channel arranged on the spreader body and used for the threaded rod to penetrate and slide, the extending direction of the sliding channel is consistent with the extending direction of the sliding groove, and a driving handle is arranged at one end, far away from the moving rod, of the threaded rod.

The utility model discloses further set up to: one side of the movable rod towards the threaded rod is provided with a butt slide for inserting the threaded rod, and the butt slide extends along the length direction of the movable rod.

The utility model discloses further set up to: the movable rod is provided with scales which can directly read the spreading distance.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses a design, the doctor of performing the operation at first inserts two parts of strutting respectively in the both ends of cutting the bone gap, with fixed plate and one side butt of cutting the bone gap, then rethread drive arrangement makes the removal portion keep away from the fixed part gradually, will cut the bone gap simultaneously and strut to suitable size, makes the doctor of performing the operation obtain sufficient operation region, guarantees going on smoothly of operation and not influencing the implantation of later steel sheet and not influenced.

Drawings

FIG. 1 is a perspective view of the distractor in an arcuate configuration;

FIG. 2 is an exploded view of the drive structure;

FIG. 3 is a schematic perspective view of a position-limiting structure of the fixing rod;

fig. 4 is a schematic perspective view of the distractor provided with a drive member;

fig. 5 is a perspective view of the hidden part of the distractor provided with the driving part.

Reference numerals: 1. a distractor body; 11. a distraction component; 111. a fixed part; 1111. a through hole; 1112. fixing the housing; 1113. a fixing plate; 112. a moving part; 13. a sliding groove; 14. a limiting component; 141. a threaded rod; 1411. A drive handle; 142. a slipping channel; 151. a moving channel; 152. a limit screw; 153. a threaded hole; 21. A connecting rod; 22. fixing the rod; 23. a drive structure; 231. a screw; 2311. rotating the handle; 232. perforating; 233. a threaded through hole; 24. a travel bar; 241. abutting against the slideway; 25. a drive member; 251. a guide post; 252. A screw rod; 2521. rotating the handle; 253. a connecting plate; 26. and (4) a measuring device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 5, in order to achieve the above object, the present invention provides the following technical solutions: a shin bone high position cuts the bone spreader, including spreader body 1, there are distraction parts 11 used for strutting the bone cutting gap on the spreader body 1, there are two distraction parts 11, two distraction parts 11 can be with cutting the left and right both ends of the bone gap to butt separately and leave the operation area used for operation between two distraction parts 11, distraction part 11 includes the fixed part 111 with cutting one side bone butt of bone gap and can move and strut the movement part 112 of the other side bone of bone gap, there are actuating devices used for driving two distraction parts 11 to strut or close at the same time in the spreader body 1, the design of this utility model, the surgeon inserts two distraction parts into cutting both ends of bone gap separately at first, butt the fixed plate with one side of cutting the bone gap, then pass the actuating device, make the movement part 112 keep away from the fixed part 111 gradually, meanwhile, the osteotomy gap is expanded to a proper size, so that a surgeon can obtain a sufficient operation area, the smooth operation is ensured, and the implantation of the steel plate is not influenced.

The fixing portions 111 and the moving portions 112 are arranged in an arc-shaped structure along the length direction of the fixing portions 111, the middle portions of the fixing portions 111 and the middle portions of the moving portions 112 are hinged and arranged in a scissors structure, the driving device comprises a fixing rod 22 used for connecting the two fixing portions 111, a connecting rod 21 used for connecting the two moving portions 112 and a driving structure 23 used for driving the connecting rod 21 to be far away from or close to the fixing rod 22, the fixing rod 22 is used for connecting one ends of the two fixing portions 111 in the length direction, and the connecting rod 21 is used for connecting one ends of the two moving portions 112 in the length.

The setting of fixed part 111 and removal portion 112 arc structure can stretch into patient affected part and arc bending portion can not block surgeon's sight when strutting the shin bone when fixed part 111 and removal portion 112, guarantee that surgeon's operation space is sufficient, can strut parts 11 with two simultaneously when using drive structure 23 through the design of dead lever 22 and connecting rod 21 and open, cut bone gap both sides and strut the gap of same length, thereby guarantee that the gap middle part is leveled, the field of vision is opened extensively.

The driving structure 23 includes a screw 231, a through hole 232 disposed on the fixing rod 22 for the screw 231 to pass through, and a threaded through hole 233 disposed on the connecting rod 21 and adapted to the screw 231, the connecting rod 21 can be far away from or close to the fixing rod 22 during the rotation of the screw 231, a rotating handle 2311 is disposed at one end of the screw 231 far away from the threaded through hole 233, with the arrangement of the driving structure 23, the surgeon can rotate the rotating handle 2311 to gradually move the connecting rod 21 away from the fixing rod 22, so that the distraction component 11 distracts two sides of the osteotomy gap, this design not only can guarantee to open stably but also can guarantee to strut even if the control of releasing the swivelling joint 2311 after opening and strut that the part 11 can not be closed through the spiro union mode of screw rod 231 with screw through hole 233 to the work of liberation both hands guarantees that the doctor does the convenience of operation in-process.

One end that dead lever 22 was kept away from to fixed part 111 is provided with measuring device 26, the distance between fixed part 111 in-process can be measured through measuring device 26 to movable part 112, this measuring device 26 set up can make things convenient for the audio-visual size of strutting the gap of knowing of surgeon, thereby according to many years' experience, the size that the biggest gap that struts is judged to medical experiment data, thereby in the operation process, under the condition that does not cause negative effect, guarantee as far as enough that strut the gap, ensure that the operation is perfect to go on.

The fixed part 111 and the moving part 112 are both arranged in a telescopic rod structure, the fixed part 111 comprises a fixed shell 1112 and a fixed plate 1113 connected in the fixed shell 1112 in a sliding way, the fixed rod 22 is fixedly connected with the fixed plate 1113, the moving part 112 comprises a moving shell and a moving plate connected in the moving shell in a sliding way, the connecting rod 21 is fixedly connected with the moving plate, the moving part 112 and the fixed part 111 are both provided with limit structures for limiting the sliding strokes of the moving plate and the fixed plate 1113, the limit structures comprise a moving channel 151 arranged on one side of the fixed shell 1112 facing the fixed rod 22 and on one side of the moving shell facing the connecting rod 21, and a limit screw 152 which is arranged in the moving channel 151 and is screwed with the fixed plate 1113 or the moving plate in, and set up the screw hole 153 that supplies the spiro union of stop screw 152 on fixed plate 1113 and the movable plate, the design of

fixed part

111 and 112 telescopic links of moving part mainly plays following several advantages: 1. the fixing part 111 and the moving part 112 can be extended and retracted according to the specific conditions in the operation process, so that the fixing rod 22 and the connecting rod 21 are far away from the operation area, and the sufficient space of the operation area is ensured; 2. when the connecting rod 21 and the fixed rod 22 are far away from the upper parts of the moving part 112 and the fixed part 111, and the resistance arm is unchanged relative to the increase of the power arm in the lever principle, the power arm moves for a longer distance but the resistance arm can only move for a shorter distance, so that the function of accurately controlling the size of the distraction gap is achieved; and through limit structure's design, can control the flexible length of fixed part 111 and removal portion 112, guarantee execute the art in-process, can satisfy executing art person's multiple demand, increased the suitability.

The driving device comprises a moving rod 24 for driving the moving part 112 to be far away from or close to the fixing part 111 and a driving part 25 for driving the moving rod 24 to move, a through hole 1111 for the moving rod 24 to pass through is arranged on the fixing part 111, and scales are arranged on the moving rod 24 and can directly read the spreading distance.

The driving device is composed of a moving rod 24 and a driving part 25, the moving rod 24 passes through a through hole 1111 in the fixing part 111 to be connected with the moving part 112, compared with the design that the moving rod passes by the fixing part 111 to be connected with the moving part 112, the design is more stable, the pressure of the moving part 112 on the moving rod 24 is reduced, and scales are arranged on the moving rod 24, so that the width of a gap can be clear for a doctor while the osteotomy gap is expanded, and effective data support is provided for the operation and the subsequent implantation of a steel plate.

The driving part 25 comprises a guide post 251 fixedly connected with the distractor body 1, a screw rod 252 rotatably connected with the distractor body 1, and a connecting plate 253 connected with the guide post 251 in a sliding manner and in threaded connection with the screw rod 252, one end of the moving rod 24 far away from the moving part 112 is arranged in a sliding manner with the connecting plate 253, a sliding groove 13 for the moving rod 24 to pass through and for the moving rod 24 to slide is arranged on the distractor body 1, the sliding groove 13 extends along the transverse direction of the distractor body 1, a limiting part 14 for limiting the fixed moving rod 24 to slide is arranged on the sliding groove 13, and a rotating handle 2521 capable of driving the screw rod 252 to rotate is arranged at one end of the screw rod 252 far away from the fixing part 111.

This is a design method of the driving part 25: connecting plate 253 is connected to guide post 251 and threaded connection on lead screw 252 through sliding, make connecting plate 253 slide along the length direction of guide post 251 through rotating lead screw 252, thereby make the carriage release lever 24 of connecting on connecting plate 253 move along guide post 251 length direction simultaneously, thereby make the portion of strutting strut gradually, in addition this carriage release lever 24 slides and connects on connecting plate 253, thereby can adjust the distance between two portions of strutting through sliding of carriage release lever 24 and before the operation goes on, the surgeon can adjust the distance between the portion of strutting according to the length of cutting the bone gap thereby reach the most ideal operation state, slide to the assigned position again through stop part 14 when carriage release lever 24 along the extending direction of sliding groove 13 and fix it spacing, prevent that carriage release lever 24 is in the course of the work, take place to move and influence the progress of operation.

The limiting part 14 comprises a threaded rod 141 used for limiting the movement of the moving rod 24 and a sliding channel 142 arranged on the distractor body 1 and allowing the threaded rod 141 to penetrate through and slide, the extending direction of the sliding channel 142 is consistent with the extending direction of the sliding groove 13, one end, far away from the moving rod 24, of the threaded rod 141 is provided with a driving handle 1411, the limiting part 14 is designed, a user firstly rotates the driving handle 1411 to drive the threaded rod 141 to rotate, so that the driving handle 1411 and the moving rod 24 are released to fix the distractor body 1 relatively, then the moving rod 24 is moved, the opening part is moved to a proper position, then the driving handle 1411 is rotated to drive the threaded rod 141 to rotate to fix the moving rod 24 again for limiting, and therefore the sliding phenomenon of the moving rod 24 in the working process is prevented, and the opening effect is good.

One side of the moving rod 24 facing the threaded rod 141 is provided with an abutting slide way 241 for inserting the threaded rod 141, the abutting slide way 241 extends along the length direction of the moving rod 24, and the design of the sliding channel 142 enables the threaded rod 141 to be inserted into the sliding channel 142, so that a more stable effect is achieved.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a shin bone high position cuts bone spreader, including spreader body (1), characterized by: strutting and being provided with on ware body (1) and being used for strutting part (11) that struts that cuts the bone gap, it is provided with two to strut part (11), two strut parts (11) can with cut the bone gap about both ends respectively the butt and two strut leave the operation region that supplies the operation to use between part (11), strut part (11) including with cut fixed part (111) of bone gap department one side bone butt and can remove the removal portion (112) of strutting and cutting bone gap department opposite side bone, it struts or closed drive arrangement to be provided with in ware body (1) to be used for driving two components (11) that strut simultaneously.

2. The high tibial osteotomy distractor of claim 1, wherein: fixed part (111) and removal portion (112) are the arc structure setting along its length direction, the articulated setting in middle part of the middle part of fixed part (111) and removal portion (112) is and is "scissors" structure setting, drive arrangement keeps away from or is close to drive structure (23) of dead lever (22) including dead lever (22) that are used for connecting two fixed parts (111) and are used for connecting two removal portions (112) and drive connecting rod (21), dead lever (22) are used for connecting two fixed parts (111) length direction's one end, connecting rod (21) are used for connecting two removal portions (112) length direction's one end.

3. The high tibial osteotomy distractor of claim 2, wherein: the driving structure (23) comprises a screw rod (231), a through hole (232) which is formed in the fixing rod (22) and through which the screw rod (231) penetrates, and a threaded through hole (233) which is formed in the connecting rod (21) and matched with the screw rod (231), the connecting rod (21) can be far away from or close to the fixing rod (22) in the rotating process of the screw rod (231), and a rotating handle (2311) is arranged at one end, far away from the threaded through hole (233), of the screw rod (231).

4. The tibial plateau osteotomy distractor of claim 3, wherein: one end, far away from the fixed rod (22), of the fixed portion (111) is provided with a measuring device (26), and the distance between the movable portion (112) and the fixed portion (111) can be measured through the measuring device (26) in the process that the movable portion (112) is far away from the fixed portion (111).

5. The high tibial osteotomy distractor of claim 2, wherein: fixed part (111) and removal portion (112) all become telescopic link structure and set up, fixed part (111) including fixed shell (1112) and slide and connect fixed plate (1113) in fixed shell (1112), dead lever (22) and fixed plate (1113) fixed connection, removal portion (112) including remove the shell with slide and connect the movable plate in removing the shell, connecting rod (21) and movable plate fixed connection, all be provided with the limit structure of restriction movable plate and fixed plate (1113) stroke that slides on removal portion (112) and fixed part (111), limit structure is including setting up on fixed shell (1112) towards dead lever (22) one side and removal shell towards moving channel (151) one side on connecting rod (21) one side, and be located moving channel (151) and with fixed plate (1113) in moving channel (151) or the limit screw (152) of movable plate spiro union, And a threaded hole (153) which is arranged on the fixing plate (1113) and the moving plate and is used for the screw connection of the limit screw.

6. The high tibial osteotomy distractor of claim 1, wherein: the driving device comprises a moving rod (24) used for driving the moving part (112) to be far away from or close to the fixing part (111) and a driving part (25) used for driving the moving rod (24) to move, wherein a through hole (1111) for the moving rod (24) to penetrate through is formed in the fixing part (111).

7. The tibial plateau osteotomy distractor of claim 6, wherein: the driving part (25) comprises a guide post (251) fixedly connected with the distractor body (1), a screw rod (252) rotatably connected with the distractor body (1), and a connecting plate (253) connected with the guide post (251) in a sliding way and in threaded connection with the screw rod (252), one end of the moving rod (24) far away from the moving part (112) is connected with the connecting plate (253) in a sliding way, a sliding groove (13) for the moving rod (24) to pass through and the moving rod (24) to slide is arranged on the spreader body (1), the sliding groove (13) extends along the transverse direction of the distractor body (1), the sliding groove (13) is provided with a limiting component (14) for limiting the sliding of the fixed moving rod (24), one end of the screw rod (252) far away from the fixed part (111) is provided with a rotating handle (2521) capable of driving the screw rod (252) to rotate.

8. The tibial plateau osteotomy distractor of claim 7, wherein: the limiting component (14) comprises a threaded rod (141) used for limiting the movement of the moving rod (24) and a sliding channel (142) arranged on the distractor body (1) and used for the threaded rod (141) to penetrate and slide, the extending direction of the sliding channel (142) is consistent with the extending direction of the sliding groove (13), and a driving handle (1411) is arranged at one end, far away from the moving rod (24), of the threaded rod (141).

9. The tibial plateau osteotomy distractor of claim 8, wherein: one side of the moving rod (24) facing the threaded rod (141) is provided with an abutting slide way (241) for inserting the threaded rod (141), and the abutting slide way (241) extends along the length direction of the moving rod (24).

10. The tibial plateau resection spacer of any one of claims 6 to 9, wherein: the movable rod (24) is provided with scales which can directly read the spreading distance.