CN206007303U - A kind of hysteroscope stapler - Google Patents

Abstract

The utility model provides a kind of electronic hysteroscope stapler, including a performance element, for realizing clamping, shearing and stapling function action；One gear unit, for imparting power to described performance element；One control unit, for controlling the transmission of the gear unit；One clamps holding unit, is in closure state for maintaining the close handles.The beneficial effects of the utility model are, are provided with multilayer while the serial verb construction that rotates, operating theater instruments head is carried out and meanwhile rotation improve security；Multiple security measure is set, further improves the controllable degree and safety coefficient of operating theater instruments.

Description

A kind of hysteroscope stapler

Technical field

The utility model is related to endoscopic surgical device, more particularly to a kind of electronic hysteroscope stapler.

Background technology

Minimally Invasive Surgery occupies the critical role in surgical operation at present, and wherein, it is surgical operation that focus is carried out excision An important part, at present general method is that the operating theater instruments of surgery has a long axle or shaft-like knot Axle or bar are probeed into focus under the cooperation of endoscope by structure, and by lesion resection.

The one kind of hysteroscope stapler as operating theater instruments, the operation principle of stapler are that stapler is clamped in focus portion Position, is cut off, while excision sutures focus.

At present, there is existing hysteroscope stapler many defects, such as stapler axle front end can carry out in a plane Rotation, but the motion of three-dimensional can not be carried out；The trigger of stapler is easy to be triggered, and produces malpractice；Stapler Angle adjustment can be carried out to front end bar portion, but cannot but be automatically replied, therefore, be badly in need of a kind of practicality of exploitation, multi-functional Electronic hysteroscope stapler.

In view of drawbacks described above, it is new that the utility model creator obtains this practicality finally through prolonged research and practice Type.

Utility model content

For solving above-mentioned technological deficiency, the technical solution adopted in the utility model is, there is provided a kind of hysteroscope stapler, bag Include：One performance element, for realizing clamping, shearing and stapling function action, is provided with anastomosis staple in the performance element；One transmission Unit, for imparting power to the performance element；One control unit, for controlling the transmission of the gear unit.

Further, the gear unit includes shearing transmission subunit, for moving to described performance element transmission shearing Make；The shearing transmission subunit includes that rack, pull bar and push broach bar, described pull bar one end are connected with the rack, separately One end is connected with the push broach bar, and the rack drives the pull bar motion, the pull bar to drive the push broach bar motion, institute Stating push broach bar is used for promoting the cutter in the performance element to execute cutting action.

Further, the gear unit includes rotary drive subelement, for moving to described performance element transmission rotation Make；The rotary drive subelement includes rotating fresh idea, swivel joint and the first holster, and the rotation fresh idea is included by the rotation Adapter include one rotation in head, in the rotation head be socketed on first holster and first holster can be driven One rotation STATEMENT OF FEDERALLY SPONSORED of rotation is affixed；The swivel joint wraps up head in the rotation.

Further, described hysteroscope stapler, also includes the unit that automatically resets, and the unit that automatically resets includes a rotation Head, a rotating base and release link；The rotary head is rotated with the rotating base pin joint and around the rotating base, described turn Dynamic base is provided with the reset guide groove slided for the release link, and the reset guide groove is provided with open segment, the open segment One end is offseted with the reset limited block of the release link, the other end of the open segment and the reset being socketed in the release link Spring offsets；The rotary head includes that at least two jags, the jag are corresponded with the release link and phase respectively Support, and the rotary head that makes of the release link transmission is born when the rotary head is in non-rest position recover to balance position The power that puts.

Further, described hysteroscope stapler, also includes that a clamping holding unit, the clamping holding unit include resetting Between switch and keeper, close handles that the reset switch is placed in described control unit and the keeper, described fixed Position part is used for the position for limiting the reset switch, and it is in closure state that the reset switch is used for maintaining the close handles.

Further, described control unit include hide insurance subelement, described hiding insurance subelement include a shell, one The close handles and a trigger, the close handles are linked with the trigger；The shell is surrounded to form one and hide to insure and is held Chamber is put, when the close handles are in non-occluded state, the trigger is hidden in the insurance accommodating cavity.

Further, described control unit also includes contradicting insurance subelement, and the conflict insurance subelement includes insuring, institute Insurance is stated with the close handles by safety pin shaft pin joint, the insurance is provided with insurance projection, the trigger be provided with to Gear beam, when described insurance be in the lock state when, the insurance projection with described keep out beam offset so as to prevent the trigger touch Send out.

Further, described control unit also includes a stopping subelement, and the stopping subelement including shell and described outer The first reset switch and the second reset switch that shell phase connects, second reset switch include the first slide block and the second slide block, institute The one end and first slide block for stating the first reset switch is linked, and second slide block is linked with the rack.

Further, described control unit also includes a manual resetting structure, for realizing the two-way of the hysteroscope stapler Shift action；The hand-reset structure includes：One driving section, when the driving section is in primary importance, the driving section band The dynamic rack advances, and when the driving section is in the second place, the driving section drives the rack to retreat.

Further, described hysteroscope stapler, also includes a power unit, and the power unit is a revolving part, described Revolving part can drive the driving section rotation.

The beneficial effects of the utility model are compared with the prior art：

1. the drive mechanism of rotation is provided with, operating theater instruments head can be allowed in the feelings for being provided solely for a rotation with surface Under condition, three-dimensional positioning is realized；Be provided with multilayer at the same rotate serial verb construction, operating theater instruments head is carried out at the same Rotation improves security；

2. the hiding insurance accommodating cavity being provided with operating theater instruments shell, when making close handles be in non-closing position, pulls Machine can so avoid the false touch of trigger from touching in hidden state, significant increase operating theater instruments controlled degree and safety coefficient；If Multiple security measure is put, the controllable degree and safety coefficient of operating theater instruments is further improved；

3. locking-resetting structure is provided with, structure can be made to automatically reset in the case where external forces are lost；If Holster-connection sheet-holster structure is put, rotation can be made to become more smooth.

Description of the drawings

For the technical scheme being illustrated more clearly that in the utility model embodiment, below will be to needed for embodiment description Accompanying drawing to be used is briefly described.

Fig. 1 is the utility model clamping subelement external structure schematic diagram；

Fig. 2 is the utility model clamping subelement tail end internal structure schematic diagram；

Fig. 3 is the utility model staple cartridge tray structure of glide path schematic diagram；

Fig. 4 is the utility model resist-nailed seat internal structure schematic diagram；

Fig. 5 is the utility model cutter structural representation；

Fig. 6 is the utility model nail bin groupware structural representation；

Fig. 7 is the utility model gun barrel overall structure profile；

Fig. 8 is the utility model clamping transmission subunit front-end architecture schematic diagram；

Fig. 9 is the utility model clamping transmission subunit end construction schematic diagram；

Figure 10 is the utility model the first fixed cover structural representation；

Figure 11 is the utility model shearing transmission subunit structural representation；

Figure 12 is the utility model rotary drive sub-unit structure schematic diagram；

Figure 13 is head position view in the utility model rotation；

Figure 14 is the utility model rotation STATEMENT OF FEDERALLY SPONSORED structural representation；

Figure 15 is the utility model swivel joint schematic internal view；

Figure 16 is the connection diagram of the utility model inner core and rotation STATEMENT OF FEDERALLY SPONSORED；

Figure 17 is the utility model rotary head structural representation；

Figure 18 is the utility model rotating base structural representation；

Figure 19 is the utility model securing rod structural representation；

Figure 20 is the utility model control unit left view；

Figure 21 is the utility model control unit right view；

Figure 22 is the utility model triggering sub-unit structure schematic diagram；

Figure 23 is the first reset switch of the utility model and the second reset switch connection diagram；

Figure 24 is the utility model the first reset switch slideway structure schematic diagram；

Figure 25 is the utility model the second reset switch structural representation；

Figure 26 is the second reset switch of the utility model contact chip and circuit board connection diagram；

Figure 27 is the utility model hand-reset lid and manual reset switch position view；

Figure 28 is the utility model hand-reset piece and reset of card bit slice connection diagram；

Figure 29 is the utility model hand-reset unit and restoring link connection diagram；

Figure 30 is the utility model hand-reset unit and device body main body connection diagram；

Figure 31 is that the utility model hides insurance subunit position schematic diagram；

Figure 32 is that the utility model hides insurance subelement right view；

Figure 33 is that the utility model hides insurance subelement left view；

Figure 34 is that the utility model contradicts insurance sub-unit structure schematic diagram；

Figure 35 is the utility model automatic reset structure schematic diagram；

Figure 36 is the utility model rotational structure schematic diagram；

Figure 37 is the utility model securing rod structural representation；

Figure 38 is the utility model flexible protective casing position view；

Figure 39 is the utility model battery unit structure schematic diagram；

Figure 40 is the utility model electric machine structure schematic diagram；

Figure 41 is the utility model automatic reset structure schematic diagram；

Figure 42 is the structural representation of the utility model driving section.

Specific embodiment

Below in conjunction with accompanying drawing, the above-mentioned He other technical characteristic of the utility model and advantage are described in more detail.

The utility model is related to a kind of hysteroscope stapler, and which includes：

One performance element, for realizing clamping, shearing and stapling function action；One gear unit, for transmitting power Give described performance element；One control unit, for controlling the when program process of above-mentioned functions realization；One power unit, for defeated Go out carry out clamping, shear and stapling action power；One battery unit, for powering to motor and circuit.One clamps holding list Unit, is in closure state for maintaining the close handles；One automatically resets unit, for make in non-locking state rotary head from Dynamic reset.

Described performance element includes：One clamping subelement, a cutting subelement and a stapling subelement.

As shown in figure 1, being clamping subelement external structure schematic diagram；As shown in Fig. 2 being clamping subelement tail end internal junction Structure schematic diagram.The clamping subelement is used for completing the holding action to treatment target, and described clamping subelement includes：Support nail Seat 111 and staple cartridge tray 121, the staple cartridge tray 121 are provided with staple cartridge tray slideway 122, and 122 two ends of staple cartridge tray slideway are respectively follows closely Storehouse seat slipway location 1 and staple cartridge tray slipway location 2 1222.As shown in figure 3, being staple cartridge tray structure of glide path schematic diagram. 121 bottom of the staple cartridge tray is provided with a staple cartridge tray glidepath 124.As shown in figure 4, being resist-nailed seat internal structure schematic diagram.Described Resist-nailed seat 111 includes slide rail 1112 on resist-nailed seat, resist-nailed seat forming tank 1113, resist-nailed seat slide block 1111 and arc groove 1114, The resist-nailed seat slide block 1111 is placed in staple cartridge tray slideway 122, can be slided along staple cartridge tray slideway 122.The arc groove 1114 Outer cover is equipped with the second holster 112, and second holster 112 has a projection, and when the second holster axially-movable, the projection will Power acts on arc groove 1114, for moving resist-nailed seat slide block 1111.When the resist-nailed seat slide block 1111 is located at staple cartridge tray At slipway location 2 1222,111 open-shaped state of resist-nailed seat.When resist-nailed seat slide block 1111 is located at staple cartridge tray slipway location 1 During place, resist-nailed seat 111 is in closure state.The clamping subelement completes staple cartridge tray 121 by the axially-movable of the second holster 112 Clamping with resist-nailed seat 111.

As shown in figure 5, being cutter structural representation.The cutting subelement is used for after stapling action to treatment target Carry out shear treatment.Described cutting subelement includes cutter 151.The cutter 151 include：Raised 152 on cutter, Cutting edge 153 and cutter sliding block 154.On the cutter, raised 152 slide in slide rail 1112 on resist-nailed seat, described Cutter sliding block 154 slides in staple cartridge tray glidepath 124.Cutter back projection 155 is combined with push broach bar 231, The push broach bar 231 promotes cutter 151 to slide, for cutting object.

The stapling subelement is used for completing the stapling action to treatment target.Described stapling subelement includes nail bin group Part.As shown in fig. 6, being nail bin groupware structural representation.The nail bin groupware includes that nail bin 1231, anastomosis staple 1232, first push away Nail piece 1233, the second pushing slice of nail 1234, the 3rd pushing slice of nail 1235, ejector pin slide plate 1236 and nail bin cover 1237.The cutter 151 Ejector pin slide plate 1236 is withstood to moving near nail bin direction, in the presence of ejector pin slide plate 1236, the first pushing slice of nail 1233, second Pushing slice of nail 1234 and the 3rd pushing slice of nail 1235 drive anastomosis staple 1232 to fire upwards, and the anastomosis staple 1232 after percussion clashes into resist-nailed seat Forming tank 1113, then anastomosis staple 1232 be changed into B fonts, complete to suture.

Described gear unit includes：

One clamping transmission subunit, for described clamping subelement transmission holding action；One stapling transmission subunit, For to described stapling subelement transmission stapling action；One shearing transmission subunit, for passing to described cutting subelement Pass shear action；One rotary drive subelement, for clamping subelement transmission spinning movement；One rotates transmission subunit, uses In the rotational angle for locking the clamping subelement.

Wherein, described stapling transmission subunit and shearing transmission subunit share same structure.

As shown in fig. 7, being gun barrel overall structure profile；Such as Fig. 8, it is clamping transmission subunit front-end architecture schematic diagram； As shown in figure 9, being clamping transmission subunit end construction schematic diagram.Described clamping transmission subunit includes：Drive link 215, First fixed cover 214, the second fixed cover 213, the first holster 212, closing spring 218, the first connection sheet 2173 and the second connection Piece 2174.As shown in Figure 10, it is the first fixed cover structural representation.First fixed cover 214 passes through the first fixed cover bearing pin 2141 are hinged with drive link 215.First fixed cover 214 is loop configuration, is internally provided with the first fixed cover draw-in groove 2142. First holster 212 is provided with the first holster draw-in groove 2124.Described first holster, 212 one end is put in the first fixed cover 214 Portion so that the first holster draw-in groove 2124 docks placement with the first fixed cover draw-in groove 2142, so as to form annular groove.Described Second fixed cover 213 is placed in the annular groove, for the first holster of clamping 212.Therefore, first protective case 214, Two protective cases 213 form fixed relationship with first holster 212, define that first holster 212 can only be along described first 212 defined axial movement of holster, but which is not limited in the rotation in axial plane.First holster 212 The other end is connected by the first connection sheet 2173 and the second connection sheet 2174 with the second holster 112 so that first holster 212 Axially-movable can drive 112 axially-movable of the second holster, and then control the opening or closure of resist-nailed seat 111.

As shown in figure 11, it is to shear transmission subunit structural representation, described shearing transmission subunit includes：Rack 232nd, pull bar 233 and push broach bar 231, the push broach bar 231 include arranged side by side four sub-link, described 231 one end of push broach bar with Cutter 151 are fixedly connected, 231 other end of push broach bar and 233 clamping of pull bar, and the pull bar 233 is also connected with rack 232 Connect.The pull bar 233 is connected one end with the push broach bar 231 and is provided with pull bar groove 2331, for connecting the push broach bar 231. The push broach bar 231 is connected one end with pull bar 233 push broach bar projection 2311, and the push broach bar projection 2311 is recessed with the pull bar Groove 2331 is fixedly connected.232 one end of the rack is provided with rack clamping groove 2324, and the pull bar 233 connects the tooth 232 one end of wheel bar is provided with pull bar shackle member 2332, and the pull bar shackle member 2332 is fixed with the rack clamping groove 2324 Connection.

Such as Figure 12, it is rotary drive sub-unit structure schematic diagram.The rotary drive subelement includes：Rotation fresh idea 251, Swivel joint 252 and the first holster 212.The rotation fresh idea 251 is connected with the portion of the handle of stapler, the holster 212 As the part that inside of human body is probeed into by minimally invasive mouth, and can define an axle, probe into the other structures of inside of human body It is extended along the axle.

The swivel joint 252 includes that relative two part, two parts connect male by the swivel joint 2521 be connected with swivel joint female 2522 carry out affixed.

Shown rotation fresh idea 251 has a rotary flower head portion and a rotary flower head-tail, shown rotary flower head portion Mutually close with the swivel joint 252.The rotary flower head-tail is in flower shape, to facilitate operator to use.Such as Figure 13 institutes Show, be head position view in rotation.The rotation fresh idea 251 also includes a rotation that is wrapped up by the swivel joint 252 Interior 2511, the rotation fresh idea 251 is attached with the swivel joint 252 by way of clamping, and can be driven The swivel joint 252 carries out moving along first holster, 212 defined axial directions, the rotation fresh idea 251 can rotate, and the structure for driving other related is rotated, but the swivel joint 252 not necessarily with described Rotation fresh idea 251 is carried out being rotated in the plane vertical with axle defined in first holster 212 simultaneously.The rotation Fresh idea 251 can drive first holster 212 hung down with axle defined in first holster 212 when rotating Rotated in straight plane.

Such as Figure 14, it is rotation STATEMENT OF FEDERALLY SPONSORED structural representation；Such as Figure 15, it is swivel joint schematic internal view.The rotation connects 252 are provided with a rotation STATEMENT OF FEDERALLY SPONSORED 253, and the rotation STATEMENT OF FEDERALLY SPONSORED 253 is a circulus, sets in the rotation STATEMENT OF FEDERALLY SPONSORED 253 There is linkage to cave in 2531, linkage is raised 2532, clamping groove 2533 and clamping projection 2534.The clamping groove 2533 and clamping Raised 2534 are connected together, for fixedly locked pull lever 2743 away from securing rod 274 one end.The rotation STATEMENT OF FEDERALLY SPONSORED 253 is a circulus, and described first rotation STATEMENT OF FEDERALLY SPONSORED 253 includes a raised flange, the flange and the rotation Interior head phase clamping, in the rotation, head can drive the rotation STATEMENT OF FEDERALLY SPONSORED to carry out transporting along 212 axial direction of the first holster Dynamic, this motion in axial direction is realized with head clamping in the rotation by the flange.

The rotation STATEMENT OF FEDERALLY SPONSORED 253 includes that some linkages cave in 2531, and the linkage caves in 2531 along the rotation linkage 253 outer wall inward wall of part sink, and forms hole shape structure in outer wall, forms projection in inwall, and the linkage caves in 2531 described The projection formed on inwall can be engaged with first holster 212, when the rotation STATEMENT OF FEDERALLY SPONSORED 253 is by head in the rotation When 2511 drives are rotated, first holster 212 can be driven to be rotated, the rotation STATEMENT OF FEDERALLY SPONSORED 253 can be by institute State rotation to be rotated for interior 2511, be that some linkages raised 2532 are provided with due to described rotation in STATEMENT OF FEDERALLY SPONSORED 253, described Dynamic raised 2532 with the rotation in 2511 there is good clamping, when making in the rotation 2511 rotation, drive institute Linkage raised 2532 is stated so as to driving the rotation linkage block 253 to rotate.

Such as Figure 16, it is the connection diagram of inner core and rotation STATEMENT OF FEDERALLY SPONSORED.There is a tubulose sky in first holster 212 Chamber, including a tubular core 281, the inner core 281 has an axle similar to first holster, but the axle differs Fixed exactly the same with the axle of first holster 212.The first inner core is provided with the inner core 281 lacks block 2811, the second inner core Scarce block 2812 and the 3rd inner core lack block 2813.Second inner core is lacked block 2812 and can be caved in the linkage 2531 to be carried out Match somebody with somebody, when so described rotation linkage block 2531 is rotated, the rotation linkage block 253 can be by lacking with the inner core Linkage effect between block drives the inner core 281 to be rotated.

The rotation fresh idea 251 is rotated linkage block 253 by the rotation 2511 and is rotated, the rotation Linkage block 253 is rotated with first holster 212 by the rotation that the arranges thereon 2531 drives inner core 281 that caves in, and is gone forward side by side One step drives other structures to be rotated.

The rotation linkage block 253 is synchronized motion, and institute by rotation 2511 by the rotation fresh idea 251 State swivel joint 252 to wrap in the rotation 2511 with the rotation linkage block 253.The inner core 281 is located at institute State within the first holster 212.

Linkage projection 2532 is provided with the rotation linkage block 253, and the linkage block can be with a locking pull lever The locking arranged on 2743 pulls borehole jack to connect such that it is able to drive the locking pull lever 2743 to be moved, so as to drive one A little front-end architectures execute related action.In this process, other dependency structures are also driven, for example catch bar 231.

Such as Figure 17, it is rotary head structural representation；Such as Figure 18, it is rotating base structural representation；Such as Figure 19, it is securing rod Structural representation.The rotation transmission subunit includes：Rotary head 271, spring catch 2711, rotating base 272, securing rod 274 With locking pull lever 2743, staple cartridge tray 111 is connected by spring catch 2711 with rotary head 271；Rotary head 271 and rotating base 272 sides are connected by latch structure 2722, and rotary head 271 can be circumferentially rotated around the rotating shaft of rotating base 272；Rotating base One locking gathering sill 2723 is arranged at 272 bottoms, is cased with Lock spring 2741 and is placed in locking in gathering sill 2723 on securing rod 274, Securing rod 274 can slide in locking gathering sill 2723.The rotary head 271 is provided with ratchet 2712,2712 end of the ratchet There are 7 teeth in portion, and the side that contacts with ratchet 2712 of the securing rod 274 has dentalation 2742, dentalation 2742 block Any one tooth in ratchet 2712, limits rotary head 271 and rotates.

Securing rod 274 is provided with groove away from one end of rotary head 271, and locking pull lever 2743 is with securing rod 274 by being somebody's turn to do Groove is mutually linked.Such as Figure 14, it is rotation STATEMENT OF FEDERALLY SPONSORED structure chart.The other end of the locking pull lever 2743 away from securing rod 274 With rotation 253 clamping of STATEMENT OF FEDERALLY SPONSORED.

Rotation fresh idea 251 is pulled to away from 111 direction of resist-nailed seat, swivel joint 252, rotation STATEMENT OF FEDERALLY SPONSORED can be pulled successively 253rd, locking pull lever 2743 and securing rod 274, when dentalation 2742 is separated with ratchet 2712, rotary head 271 can rotate 272 axis of rotation of dynamic base.Suitable angle is turned to, swivel joint 252 is unclamped, 2712 one of tooth of the ratchet can quilt Dentalation 2742 is blocked, said process, can reach the purpose for rotating staple cartridge tray 121 and resist-nailed seat 111.

As shown in figure 20, it is described control unit left view；As shown in figure 21, it is described control unit right view.Described Control unit includes：

One triggering subelement, switchs for trigger action；One stops subelement, produces motor stalling action for triggering； One hand-reset subelement, for making cutter reset by handle operation；One hides insurance subelement, for hiding trigger, prevents Only false triggering trigger；One contradicts insurance subelement, for limiting trigger, prevents false triggering.

As shown in figure 22, it is to trigger sub-unit structure schematic diagram, the triggering subelement includes：Close handles 39, locking Bearing pin 392, drive link 215, gear pin 311, trigger 31, gear pin 311 and percussion switch 315, close handles 39 pass through Locking bearing pin 392 is connected with device body main body 354, and drive link 215 is hinged by gear pin 311 with close handles 39, trigger 31 It is connected by gear pin 311 with close handles 39, presses the locking tail end 392 in close handles 39, close handles 39 is another End concomitant rotation, drives each connector, realizes holding action.When trigger action 31 is pressed, trigger 31 is contacted in rotary course and is hit Send out switch 315.

The stopping subelement including circuit board 317, the first reset switch 331 and the second reset switch 332.The circuit Plate 317 is provided with SW4 buttons 314 and SW5 buttons 316, and the percussion switch 315 is used for triggering SW4 buttons 314.The rack 232 are provided with the first profile of tooth of rack area 2322, the second profile of tooth of rack area 2323 and rack slideway 2321,

As shown in figure 23, it is the first reset switch and the second reset switch connection diagram；As shown in figure 24, it is first multiple Bit switch slideway structure schematic diagram.First reset switch 331 is provided with the first reset switch slideway 3311.Such as Figure 25 institutes Show, be the second reset switch structural representation.Second reset switch 332 be provided with the second reset switch contact chip 333, One slide block 3321 and the second slide block 3322, second slide block 3322 can slide along rack slideway 2321, the first slide block 3321 Contact with the first reset switch slideway 3311.First reset switch 331 is manual trigger switch, when the first reset switch 331 when not triggered manually, and the first slide block 3321 slides in the first reset switch slideway 3311, and therefore described second resets Switch 332 will not drive the first reset switch 331 to move in motion process；When the first reset switch 331 is triggered manually When, the first reset switch 331 is initiating structure, and the second reset switch 332 is driven structure, the first reset switch slideway 3311 ends will drive the first slide block 3321 to move.

As shown in figure 26, it is the second reset switch contact chip and circuit board connection diagram.Second reset switch connects Contact 333 can be connected with circuit board 317, for triggering SW5 buttons 316.When rack 232 is transported to 111 direction of resist-nailed seat When dynamic, which can drive the second reset switch 332 to slide, and make the second reset switch contact chip 333 connect with circuit board 317 Touch, triggering SW5 buttons 316.When SW4 buttons are co-located on non-toggle state with SW5 buttons, motor 41 does not work.Then press SW4 buttons can be made in triggering state to trigger 31 and SW5 buttons are in non-toggle state, motor 41 works, and motor 41 drives Rack 232 is moved to 11 direction of resist-nailed seat, and the rack 232 drives the push broach bar 231 to move, the push broach bar 231 Cutter 151 are driven to cut treatment target.In addition, rack 232 is in 11 direction motion process of resist-nailed seat, rack 2321 end of slideway drives second reset switch 332 to move by the second slide block 3322, and then can trigger SW5 buttons 316. When SW4 buttons 314 are co-located on triggering state with SW5 buttons 316, motor 41 stops operating.Trigger 31, trigger are now unclamped 31 return initial position, and percussion switch 315 can unclamp SW4 buttons 314.When SW4 buttons 314 are in non-toggle state, and SW5 When button is in triggering state, 41 counter motion of motor, so that pass through the 3rd change-speed gearing 435, the 4th change-speed gearing 48, gear Mutually drive between bar 232, pull bar 233, push broach bar 231, cutter 151 are gradually taken back original position.Answer when promoting described first During bit switch 331,3311 end effect of the first reset switch slideway is in the first slide block 3321, and then drives the second reset switch 332 motions, after the triggering SW5 of the second reset switch contact chip 333 buttons 316, motor 41 stops operating.

As shown in figure 27, it is hand-reset lid and manual reset switch position view；As shown in figure 28, it is hand-reset Piece and reset of card bit slice connection diagram；As shown in figure 29, it is hand-reset unit and restoring link connection diagram；Such as Figure 30 Shown, it is hand-reset unit and device body main body connection diagram.

The hand-reset subelement include hand-reset lid 351, manual reset switch 352, hand-reset piece 353, Two pins 355, reset of card bit slice 46, restoring link 356 and irregular spring 357.

The manual reset switch 352 is provided with manual reset switch projection 3521.The hand-reset piece 353 is provided with The groove of manual reset switch projection 3521 is accommodated, on the groove, has two end faces, respectively hand-reset piece first end face 3531 and hand-reset piece second end face 3532.

The manual reset switch 352, hand-reset piece 353 and restoring link 356 are by the second pin 355 and device body master Body 354 connects, and is reset of card bit slice 46 below hand-reset piece 353, and irregular spring 357 and the 3rd reset switch 61 pass through the Three pins 64 are connected with device body main body 354.357 one end clamping device body main body 354 of the irregular spring, its other end and reset Connecting rod 356 is connected, and pressure is acted on down on restoring link 356.The restoring link 356 connects the irregular spring 357 one end is provided with restoring link projection 3561.

After removing hand-reset lid 351, manual reset switch 352 will come out.Manual reset switch 352 is pulled out, Manual reset switch projection 3521 makes hand-reset piece 353 with manual reset switch against hand-reset piece first end face 3531 352 rotate.Hand-reset piece second end face 3532 is made to be against plane on reset of card bit slice 46, under external force reset of card bit slice 46 the 4th change-speed gearings 48 of promotion are moved down, and the first retaining spring 45 is pushed.When hand-reset piece 353 slips into reset of card bit slice During 46 indentation, there, hand-reset piece 353 is locked, and now manual reset switch 352 can swing, but can not return initial position.

When manual reset switch 352 swings, restoring link 356 is moved with manual reset switch 352, in motion process, Occlusion the first profile of tooth of rack of restoring link 356 area 2322, so as to drive rack 232 to slide backward.The rack first In profile of tooth area 2322, profile of tooth is unidirectional tooth, and when 356 action of restoring link, rack 232 can only be retreated, it is impossible to advance.Work as reset When connecting rod projection 3561 skids off rack the first profile of tooth area 2322, hand-reset function is completed.

As shown in figure 31, it is to hide insurance subunit position schematic diagram.The hiding insurance subelement includes：Trigger 31, Insurance 37, shell 81 and close handles 39.The close handles 39 are linked with the trigger 31.As shown in figure 32, it is to hide guarantor Dangerous subelement right view；As shown in figure 33, it is to hide insurance subelement left view.The close handles 39 include locking tail end 391 are used for being coordinated with the locking bearing pin 392, provide one and be easy to operator with locking bearing pin 392, the locking tail end 391 The lever force that the locking spanner 39 is closed.The shell 81 surrounds to be formed hides insurance accommodating cavity, and when locking, tail end 391 is remote From the shell 81 when, the insurance 37 and the trigger 31 are hidden in the hiding insurance accommodating cavity.The closure hand Handle 39 is not closed, and operator cannot touch the insurance 37 or trigger 31 with hand.Therefore, eliminate due to touching by mistake and cause False triggering risk.

Away from the other end for locking tail end 391 in the close handles 39, pass through gear pin with drive link 215 311 pin joints, the drive link 215 and the first protective case 214 are by 2141 pin joint of the second protective case bearing pin, second protective case There is the space of one degree of freedom, translational motion can be carried out on the longitudinal axis which limits.

In 39 closing course of the close handles, external force makes the locking tail end 391 close to the shell 81, entirely The close handles 39 are rotated around the locking bearing pin 392, as first protective case 214 is merely able to translate, so only The gear pin 311 is moved downward under the drive of the close handles 39, and the gear pin 311 is moved downward so that The insurance 37 can depart from the hiding insurance accommodating cavity with the trigger 31, can allow operator normally using the insurance 37 with the trigger 31.The insurance 37 is connected with the close handles 39 by a safety pin shaft 372.

The first locating slot 394 and the second locating slot 393 is additionally provided with the close handles 39.37 one end of the insurance set Insurance locating piece is equipped with, the other end is provided with the first insurance projection 371.Insurance locating piece and first locating slot 394 and Second locating slot 393 coordinates, and the position restriction of the insurance 37 is in first locating slot 394 or described second fixed In the groove 393 of position.

As shown in figure 34, it is to contradict insurance sub-unit structure schematic diagram.The insurance subelement that contradicts includes：37 Hes of insurance Trigger 31.When the close handles 39 in not closed when, the insurance 37 and the trigger 31 are hidden in described hiding Within insurance accommodating cavity, now, operator is to touch the insurance 37 and the trigger 31, but is not exclusively by other Mode touches the possibility of the trigger 31 when the close handles 39 are in release position, and the close handles 39 are in and close When closing position, trigger 31 can be pulled, but no matter whether the close handles 39 are in closure state, in the insurance 37 In the case of not being opened, the trigger 31 cannot all touch.31 back side of the trigger is provided with one and keeps out beam 313, described Keeping out beam 313 can be inconsistent with the described first insurance projection 371, so as to prevent the trigger 31 from pressing further downward.Institute With, only close the close handles 39 and the insurance 37 is discharged from hiding safety position with the trigger 31, and Insurance 37 is toggled it to behind release position from latched position, the trigger 31 can be pulled, pulling trigger 31 will be described for drive Trigger triggering block 312 drives other link gear linkages.

As shown in figure 20, it is described control unit left view；Such as Figure 21, it is to clamp to protect described in described control unit right view Holding unit includes the 3rd reset switch 61, keeper 62 and back-moving spring 63.3rd reset switch 61 and device body main body 354 Connected with the 3rd pin 64, and the 3rd reset switch 61 is blocked with irregular spring 357.The fixing end of the keeper 62 passes through 4th pin 65 is connected with device body main body 354.After close handles 39 reach closing position, the 3rd reset switch 61 is flicked, and is closed Close 39 semi arch tail end of handle and snap in 61 front end of the 3rd reset switch, while 61 tail end of the 3rd reset switch is higher by keeper 62, In the effect of back-moving spring 63, make keeper 62 rebound and snap in below 61 afterbody of the 3rd reset switch, make the 3rd reset switch 61 Locked, " click " can be heard as keeper 62 makes keeper 62 clash into the 3rd reset switch 61 under the effect of back-moving spring 63 Sound.

The keeper 62 is connected with the rack 232, will drive the positioning in 232 reseting procedure of the rack Part 62 links, and after close handles 39 reach closing position, makes the 3rd reset switch 61 locked, and the 3rd reset switch 61 is in rack 232 do not reset before can not rotate all the time.Described reseting procedure middle gear bar 232 drive keeper 62, compression reseting spring 63, After 62 mobile terminal of the keeper departs from the 3rd reset switch 61, the 3rd reset switch 61 is free to rotate.

Extruding close handles 39, then promote the 3rd reset switch 61 forward, 61 front end of the 3rd reset switch is turned upwards Dynamic disengaging 39 back plan of close handles.When pressure is still located on the switch of the 3rd reset switch 61, release close handles 39 exist The effect of closing spring 218 is lower to promote the first fixed cover 214, the second fixed cover 213, drive link 215 close handles 39 is returned just Beginning position, as the effect of closing spring 218 makes the first fixed cover 214, the second fixed cover 213, the first holster 212, the first aluminium The 2171, second aluminium circle 2172 of circle, flexible protective casing 2175, the first connection sheet 2173, the second connection sheet 2174, the second holster 112 Return initial position backward, open after 111 release of resist-nailed seat, the 3rd reset switch 61 herein is reset switch.

As shown in figure 35, it is automatic reset structure schematic diagram；As shown in figure 36, it is rotational structure schematic diagram.Described automatic Reset unit includes rotating base 272, rotary head 271 and release link 273.The rotating base 272 is used as the unit that automatically resets Main body supporting structure, support is played a part of with the release link 273 to the rotary head 271.

It is provided with the rotating base 272 and 273 quantity identical reset guide groove 2721 of the release link, the reset Guide groove 2721 has an opening near one end of the rotary head 371, and the reset guide groove 2721 is away from the one of the rotary head 271 End is provided with plug.

The reset guide groove 2721 is used for providing the space that slides for the release link 273, includes in the release link 273 The one reset limited block 2731 for swelling, 2731 position-limiting actions of the reset limited block, for preventing the release link 273 from deviating from The reset guide groove 2721, accordingly 2721 middle end of upper section of reset guide groove be provided with logical for the reset limited block 2731 The open segment that crosses.

The release link 273 with the reset limited block 2731 as division limits, including reset front end 2733 and after resetting End 2732, the reset front end 2733 is partially disposed within the reset guide groove 2721 with the reset rear end 2732, The direction of motion of the release link 273 is made to be limited by the reset guide groove 2721.The reset front end 2733 includes a reset Contact head 2734, the reset contact head 2734 were contradicted with 2713 moment of rotation jag of setting on the rotary head 271, shape Into resistance surface.It is attached by latch structure 2722 between the rotary head 271 and the rotating base 272, makes the rotation 271 can be rotated around the latch structure 2722.

Being provided with locking gathering sill 2723 on the rotating base 272 is used for providing accommodation space for securing rod 274.

As shown in figure 37, it is securing rod structural representation；274 front end of the securing rod is provided with dentalation 2742, institute State dentalation 2742 can mutually be engaged with the ratchet 2712 arranged on the rotary head 271, so as to realize to the rotary head 2712 fixation；The other end, the securing rod 274 are connected with locking pull lever 2743, and can be pulled in the locking Under the pulling of bar 2743, the disengaging between the dentalation 2742 and the ratchet 2712, the locking gathering sill is realized The Lock spring 2741 or other elastic constructions being enclosed within the securing rod 274 is provided with 2723 so that drawn in the locking After lever 2743 removes pull-back forces, being engaged again between the dentalation 2742 and the ratchet 2712 can be realized, So as to retighten the rotary head 271.The securing rod 274 also has a locking bulging section, for locking gathering sill 2723 coordinate, and block the Lock spring 2741.

As shown in figure 38, it is flexible protective casing position view；As shown in figure 39, it is the 3rd protective case position view. It is provided with one end to offset with the reset limited block 2731 in the release link 273, the other end is offseted with the open segment tail end Spring structure, the spring is always to provide the power for making the release link 273 move to the rotary head.

During working condition, the securing rod 274 is pulled to released state from lock-out state, meanwhile, rotary head is in front end Rotated around the latch structure 2722 under the drive of structure, after waiting to turn to default proper angle, the locking is pulled Bar 2743 removes motive force, and the securing rod 274 is under the effect of the spring 2741 again between the rotary head 271 Form fixed occlusion.

Due to the rotation of the rotary head 271, make between the rotation jag 2713 and the reset contact head 2734 Produce relative motion, the rotary head 271 has two contact surfaces with the release link 273, during this motion this Two contact surfaces are rotated around the latch structure 2722 with the rotary head 271, and one of them does not receive 272 active force shadow of rotary head Loud release link, holding position are constant, and in addition the reset contact head 2734 of a release link is by the rotation of the jag 2713 Driven, compressed the spring in release link 273 described in this root, this root release link 273 is moved backward.When the locking is pulled When the securing rod 274 is retracted by bar 2743 again, depart between the ratchet 2712 and the dentalation 2742, in pressure Spring in the release link 273 of contracting state progressively recovers to non-compressed state, and spring-return pushes dynamic whole rotary head 271 around institute State latch structure 2722 to be rotated, so that the rotary head 271 resets.After the rotary head 271 resets, the locking is pulled Motive force recalled by bar 2743, and the securing rod 274 travels forward in the presence of the Lock spring 2741, is the dentation knot Structure 2742 is engaged again with the ratchet 2712, and whole action is completed.

The rotary head 271 is placed in second holster 112, and the rotating base 272 is placed on the first holster 212 Interior, by first connection sheet 2173 and the second connection sheet 2174 between first holster 212 and second holster 112 It is attached, on first holster 212 and second holster 112, is equipped with pin-and-hole, first connection sheet 2173 and Two connection sheets 2174 are provided with circular protrusions as bearing pin.

For the connection sheet between first holster 212 and the second holster 112, quantitatively it is not defined, but Minimum should be two, and first connection sheet 2173 or the circular protrusions in the second connection sheet 2174 should also be as at least two Individual, one of them and 212 pin joint of the first holster, another be 112 pin joint of the second holster.

The unit that automatically resets also includes push broach bar protective case 276, and the push broach bar protective case 276 is used for push broach bar 231 carry out spacing, and the push broach bar protective case 276 is provided with a narrow chamber 2761 and passes through for the push broach bar 231, for preventing Push broach bar 231 produces larger vibration and skew when rotating or automatically reset.

As shown in figure 39, it is battery unit structure schematic diagram, the battery unit includes four batteries 53, wherein two economize on electricitys Pond is connected with the first cell connector 56, the second cell connector 57 respectively.The battery 53 is connected on by power consumption module 54 Together, and it is positioned in battery carrier 52 and cell box shell 55, then is sealed by battery case cover plate 51.

The power unit includes that electric machine assembly 4, the electric machine assembly 4 include motor 41 and gearbox body 43 such as Figure 40 institutes Show, be Figure 40 be electric machine structure schematic diagram.Motor 41 is fixed with two pieces of screws with motor sheath 42, the first plastics change-speed gearing 431st, first stud gear 433, the second plastics change-speed gearing 432, second stud gear 434, the 3rd change-speed gearing 435 load and become Fast casing 43 is interior, bushing 44 is inserted in the 3rd change-speed gearing 435, and electric machine assembly 4 is screwed in device body main body 354.The Four change-speed gearings 48, the first retaining spring 45 and reset of card bit slice 46 are connected with device body main body 354 with the first pin 47, and the 4th becomes Fast gear 48 is engaged with the 3rd change-speed gearing 435, and the 4th change-speed gearing 48 is also engaged with rack 232.

It is with above-mentioned hysteroscope stapler difference, the power unit is a revolving part 41 ', is manually operated institute The operation that the operating of revolving part 41 ' can replace the motor 41 is stated, described control unit also includes a manual resetting structure, such as Figure 41 Shown, it is the utility model hand-reset structural representation, the hand-reset structure includes：One driving section, when the transmission In primary importance, the driving section drives the rack 232 to advance, when the driving section is in the second place, described in portion Driving section drives the rack 232 to retreat, and the rack 232 herein is the rack bar 232 ' in Figure 41.

The driving section includes：One rotates backward part 222, a sliding pin 212, a positive gear 211；

The positive gear 211 is internally provided with the sliding pin 212, and the positive gear 211 is around the sliding pin 212 Rotate, and the positive gear 211 can slide axially along the sliding pin 212；When the driving section is in the primary importance When, 211 bottom of positive gear is meshed with the revolving part 41 ', 211 top of positive gear and the rack bar 232 ' are meshed；The rack bar 232 ' the side that contacts with the positive gear 211 is provided with bi-directional teeth 2321 '；The rotation Part 41 ' its be used for delivering power to the hand-reset structure, the revolving part 41 ' drives the positive gear 211 to rotate, And then make the positive gear 211 drive the rack bar 232 ' being meshed therewith to move along direction.

In conjunction with shown in Figure 42, which is the schematic diagram of driving section, and the part 222 that rotates backward is used for driving the rack bar 232 ' move along inverse direction, and 222 top of part that rotates backward arranges a rotation hole, and the rotation hole can connect a shape The crank structure that shape is matched with which, 222 bottom of part that rotates backward arrange a reverse gear 2223, the reverse gear 2223 are matched with the 2321 ' profile of tooth of the bi-directional teeth on the rack bar 232 '；Described rotating backward be socketed inside part 222 institute Sliding pin 212 is stated, the part 222 that rotates backward is rotated around the sliding pin 212, and the part 222 that rotates backward can be along institute State sliding pin 212 to slide axially；

Described rotating backward is additionally provided with an engaging detent 2221 on part 222, arrange in corresponding external structure There is an annular fixture block, the engaging detent 2221 can be with the annular fixture block phase clamping；Described rotating backward also is set on part 222 Be equipped with an idle running draw-in groove 2222, by move down or upper shifting described in rotate backward part 222 and make the idle running draw-in groove 2222 and described nibble Close draw-in groove 2221 to replace and the annular fixture block phase clamping, the working condition of part 222 is rotated backward described in conversion, when the engagement , with the annular fixture block in clamped condition, the part 222 that rotates backward only can be around 212 axis of the sliding pin for draw-in groove 2221 Direction rotate, when described idle running draw-in groove 2222 with the annular fixture block in clamped condition when described in equally only rotate backward part 222 Can rotate around 212 axis direction of the sliding pin；When the engaging detent 2221 is with external structure phase clamping, the transmission Portion is switched to the second place, and the reverse gear 2223 is engaged with the bi-directional teeth 2321 ' on the rack bar 232 ', The positive gear 211 is departed from the bi-directional teeth 2321 ' on the rack bar 232 '；When described idle running draw-in groove 2222 with outer During portion's structure phase clamping, the driving section is switched to the primary importance, the reverse gear 2223 and the rack bar 232 ' On the bi-directional teeth 2321 ' depart from, the positive gear 211 is nibbled with the bi-directional teeth 2321 ' on the rack bar 232 ' Close.

Part 222 is rotated backward described in pushing, the part 222 that rotates backward glides along the sliding pin 212, made described reverse The positive gear 211 is departed from by tumbler 222 from the state ejection that is engaged with the bi-directional teeth 2321 ', while making described anti- The bi-directional teeth 2321 ' is slipped into gear 2223, when slipping down to certain position, the engaging detent 2221 is mutually blocked with external structure Connect, the crank structure is installed, make the crank structure and the rotation hole phase clamping, rotate the crank structure and then drive The part 222 that rotates backward is rotated, and the reverse gear 2223 arranged on part 222 that rotates backward is around the sliding pin 212 rotate, and the reverse gear 2223 further drives the rack bar 232 ' to move along inverse direction；Lift described rotating backward Part 222, the part 222 that rotates backward are moved along the sliding pin 212, the reverse gear 2223 and the bi-directional teeth 2321 ' Depart from, when above moving on to certain position, the idle running draw-in groove 2222 and external structure phase clamping, make described in rotate backward part 222 not As for slippage.

Using the clamped condition for switching the engaging detent and the idle running draw-in groove, change the working position of the driving section Put, so as to realize only by switch operating state come with the rack one side profile of tooth to engage drive described with moving cell Move forward and backward, that is, reduce the difficulty of processing to rack multiaspect profile of tooth, realize the ingenious reasonable utilization of structure again.

211 bottom of positive gear is provided with a spring, and which is used for promoting 211 rebound reset of positive gear.

Rotate backward unlike 222 structure of part from described above, described rotate backward arrange on part 222 described and nibble It can also be fixture block form to close draw-in groove 2221, be provided with draw-in groove in the external structure corresponding with the fixture block form；

Rotate backward unlike 222 structure of part from described above, described rotate backward 222 top of part setting described Rotation hole can be a rotation block structure, and the moving block connects the crank structure that a shape is matched with which, in the crank The pivoting of part 222 is rotated backward described in realizing under the drive of structure.

The driving section also includes that a rotation briquetting 221, described rotation are provided with a rotation hole on briquetting 221, described turn Dynamic hole rotates backward 222 top phase clamping of part through the rotation briquetting 221,221 bottom of the rotation briquetting with described；Arrange Described rotate briquetting 221 purpose be, push or pull up described rotate backward part 222 when, increase the lifting surface area of hand, Convenient the part 222 that rotates backward is pressed and is pulled up, and structure is attractive in appearance.

Preferred embodiment of the present utility model is the foregoing is only, is merely illustrative for the utility model, and Nonrestrictive.Those skilled in the art understanding, can be to which in the spirit and scope limited by the utility model claim Many changes are carried out, is changed, in addition equivalent, but fall within protection domain of the present utility model.

Claims (9)

1. a kind of hysteroscope stapler, including a power unit, the power unit is a revolving part, and which is used for kissing the hysteroscope Clutch provides power, it is characterised in that also include：

One performance element, for realizing clamping, shearing and stapling function action；

One gear unit, for imparting power to the performance element；

One control unit, for controlling the transmission of the gear unit.

2. hysteroscope stapler according to claim 1, it is characterised in that

The gear unit includes shearing transmission subunit, for described performance element transmission shear action；

The shearing transmission subunit includes that rack, pull bar and push broach bar, described pull bar one end are connected with the rack, separately One end is connected with the push broach bar, and the rack drives the pull bar motion, the pull bar to drive the push broach bar motion, institute Stating push broach bar is used for promoting the cutter in the performance element to execute cutting action.

3. hysteroscope stapler according to claim 2, it is characterised in that the gear unit includes that rotary drive is single Unit, for described performance element transmission spinning movement；

The rotary drive subelement includes rotating fresh idea, swivel joint and the first holster, and the rotation fresh idea includes described Swivel joint include one rotation in head, in the rotation head be socketed on first holster and first rifle can be driven One rotation STATEMENT OF FEDERALLY SPONSORED of set rotation is affixed；The swivel joint wraps up head in the rotation.

4. hysteroscope stapler according to claim 1, it is characterised in that also include the unit that automatically resets, described automatically multiple Bit location includes a rotary head, a rotating base and release link；

The rotary head is rotated with the rotating base pin joint and around the rotating base, and the rotating base is provided with for described The reset guide groove that release link is slided, the reset guide groove are provided with open segment, one end of the open segment and the release link Reset limited block offsets, and the other end of the open segment is offseted with the back-moving spring being socketed in the release link；

The rotary head includes that at least two jags, the jag are corresponded with the release link respectively and offseted, and And bear the rotary head that makes of release link transmission when the rotary head is in non-rest position and recover to equilbrium position Power.

5. hysteroscope stapler according to claim 1, it is characterised in that also include a clamping holding unit, the clamping Holding unit includes reset switch and keeper, close handles that the reset switch is placed in described control unit and described fixed Between the part of position, the keeper is used for the position for limiting the reset switch, and the reset switch is used for maintaining the closure hand Handle is in closure state.

6. hysteroscope stapler according to claim 5, it is characterised in that described control unit includes hiding insurance single Unit, the hiding insurance subelement include a shell, close handles described in one and a trigger, the close handles and the trigger Linkage；The shell is surrounded to form one and hide and insures accommodating cavity, and when the close handles are in non-occluded state, the trigger is hidden It is hidden in the insurance accommodating cavity.

7. hysteroscope stapler according to claim 6, it is characterised in that described control unit also includes contradicting insurance single Unit, the conflict insurance subelement include insuring, and the insurance is with the close handles by safety pin shaft pin joint, the insurance Insurance projection is provided with, the trigger is provided with keeps out beam, when the insurance is in the lock state, the insurance projection and institute State and keep out beam and offset so as to preventing trigger triggering.

8. hysteroscope stapler according to claim 3, it is characterised in that described control unit also includes that stopping is single Unit, the stopping subelement including the first reset switch and the second reset switch that shell connected with the shell, described second Reset switch includes the first slide block and the second slide block, and one end of first reset switch is linked with first slide block, described Second slide block is linked with the rack.

9. hysteroscope stapler according to claim 8, it is characterised in that described control unit also includes that a hand-reset is tied Structure, for realizing the way moving action of the hysteroscope stapler；

The hand-reset structure includes：One driving section, when the driving section is in primary importance, the driving section drives described Rack advances, and when the driving section is in the second place, the driving section drives the rack to retreat.