CN209347114U - End effector and surgical instruments - Google Patents

Abstract

The utility model relates to a kind of end effector and surgical instruments, including nail-anvil assembly, it is mobile to complete the nail bin groupware bracket that the end effector closes or opens relative to the nail-anvil assembly, and the driving nail bin groupware bracket moves so that the closure driving assembly that the end effector closes or opens towards nail-anvil assembly direction, the nail bin groupware bracket includes frame body portion to install nail bin groupware and the interconnecting piece extended rearwardly to form from the frame body portion, the closure driving assembly includes closure axis, the interconnecting piece of the nail bin groupware bracket is movably arranged on the closure axis, and longitudinally of the nail bin groupware bracket on the closure axis along the closure axis moves；Apply thrust in frame body portion of the nail-anvil assembly to the nail bin groupware bracket, the interconnecting piece of the nail bin groupware bracket relatively described can be closed swinging along first direction for driving assembly, and the first direction is the direction that the nail anvil bracket acts on the power on the nail bin groupware bracket.

Description

End effector and surgical instruments

Technical field

The utility model relates to a kind of end effector and surgical instruments.

Background technique

In general surgery treatment, surgical instruments is the operation tool in medical operating, and stapler is surgical instruments A kind of operation tool for being commonly used for completing the identical function of cutting of tissue, medically uses, substitutes manual suture Equipment, main operational principle are to carry out detachment to tissue using titanium nail (suturing nail) or coincide, and are similar to stapler.It is existing Stapler include it is electronic and two kinds manual, the cutting of the linear type as disclosed in Chinese patent Shen the CN201610872240th coincide Device comprising shell is provided with perforative through-hole along its axial direction；Power input shaft is located in shell, for transmitting power；The One closure axis, is driven by power input shaft and is rotated；Second closure axis, by the first closure axis driving rotation；It is closed screw rod, by second It is closed axis driving rotation；Nail bin groupware is driven by closure screw rod and is translated；Cutter cardan shaft is driven by power input shaft and is rotated；It hits Hair bar is driven by cutter cardan shaft and is rotated；Cutter assembly is driven by percussion screw rod and is translated；Pushing device, can be with cutter assembly It abuts against, and is driven and translated by cutter assembly；And switching mechanism, it protrudes into the through-hole on shell, to by power input shaft Power selectively pass to the second closure axis or cutter cardan shaft.In the Linear cutting anastomat, on nail bin bracket Threaded hole is offered, nail bin bracket is directly threadedly coupled with closure bracket by threaded hole, to realize through closure strut driving Nail bin bracket moves up and down, and still, there are the following problems for such connection type: since nail bin bracket and nail anvil are independently solid It is fixed, so, there can be error when assembly, thus can not be closed completely when causing nail bin bracket and nail anvil to be closed, Moreover, because nail bin is directly a dynamic process with nail anvil closure, during closure, the insertion end of nail anvil and nail bin Insertion end will be contacted first, so that nail anvil generates pressure to the front end of nail bin bracket, swing by a small margin occurs for nail bin bracket, Moment of flexure occurs for tail end, the closure strut of nail bin bracket, to cause to damage to nail bin bracket and closure strut.In addition, due to nail bin Bracket, closure strut generate moment of flexure, and will will affect match result.

Utility model content

The purpose of this utility model is to provide a kind of end effector and surgical instruments, can improve match result, The fatigue damage for reducing nail bin groupware, improves the service life of nail bin groupware.

In order to achieve the above objectives, the utility model provides the following technical solutions: a kind of end effector, including nail anvil group Part is moved relative to the nail-anvil assembly to complete the nail bin groupware bracket and driving that the end effector closes or opens The nail bin groupware bracket moves so that the closure driving group that the end effector closes or opens towards nail-anvil assembly direction Part, the nail bin groupware bracket include frame body portion to install nail bin groupware and the company extended rearwardly to form from the frame body portion Socket part, the closure driving assembly include closure axis, and the interconnecting piece of the nail bin groupware bracket is movably arranged on the closure axis On, and longitudinally of the nail bin groupware bracket on the closure axis along the closure axis moves；In the nail-anvil assembly Thrust is applied to the frame body portion of the nail bin groupware bracket, the interconnecting piece of the nail bin groupware bracket can the relatively described closure driving Component is swung along first direction, and the first direction is the side that the nail anvil bracket acts on the power on the nail bin groupware bracket To.

Further, the closure driving assembly further includes the closure nut being arranged on the closure axis, the closure Nut is connect with the closure axle thread, and the interconnecting piece has mounting hole, and the closure nut is inserted into the mounting hole, It is clearance fit between closure nut and the mounting hole.

Further, the closure nut includes pressure section, the axle portion being downwardly extending from the pressure section and from institute The lateral convex block that the outside projection of axle portion is formed is stated, the axle portion is inserted into the mounting hole, between the axle portion and mounting hole Interconnecting piece for clearance fit, the nail bin groupware bracket is clamped between the pressure section and lateral convex block.

Further, it is fixed with fixing piece on the nail bin groupware bracket, is provided on the fixing piece and the convex block The card slot of cooperation, the fixing piece are located at the lower section of the interconnecting piece.

In order to achieve the above objectives, the utility model provides the following technical solutions: a kind of surgical instruments, including handle portion and work Make head, the work head includes above-mentioned end effector.

Further, the work head further includes shell and is arranged in the shell and executes to the fixation end The center bearing bracket of device, the interconnecting piece include connection sheet and the Extendible flake that is downwardly extending from left and right sides of the connection sheet, The center bearing bracket is provided in accommodating cavity and the interconnecting piece can move in the accommodating cavity along the longitudinally for being closed axis, The interconnecting piece fits in the accommodating cavity.

Further, the frame body portion has the front end far from interconnecting piece setting, and the front end is arranged to lower than institute State interconnecting piece.

Further, the work head further includes shell, and pre-bending elastic slice is provided on the nail bin groupware bracket, described pre- Curved elastic slice is clamped between nail bin groupware bracket and shell, and the pre-bending elastic slice supports the frame body portion.

Further, the pre-bending elastic slice includes the first sheet body portion above the connection sheet, is arranged in the frame The second sheet body portion above body portion and the folding part formed is folded down from second sheet body portion, the folding part supports institute State frame body portion.

Further, the nail bin groupware includes warehouse, setting in the intracorporal several suturing nails in the storehouse, the driving seam The nail-pushing part of the relatively described warehouse movement of dowel and the actuator of the relatively described warehouse movement of the driving nail-pushing part, the warehouse It is inside provided with the sliding trigger member for pushing and occurring in the warehouse change in location by the actuator, is determined in the warehouse Justice has a first position and the second position, and the actuator pushes the sliding trigger member to be moved to described the from the first position Two positions, the surgical instruments further include being located at the triggering inductive switch that sliding trigger member triggers on first position.

The utility model has the beneficial effects that: the ophthalmic surgical instrument of the utility model is installed due to nail bin groupware activity Closure nut on, nail bin groupware bracket can relatively closed nut along first direction swing, so, can avoid nail bin groupware bracket Bending reduces the fatigue damage of nail bin groupware, improves the service life of nail bin groupware.In addition, since the nail bin groupware bracket can Relatively closed nut is swung along first direction, to improve nail bin bracket and nail anvil match result.

The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail It describes in detail bright as after.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of surgical instruments shown in the utility model embodiment one；

Fig. 2 is the exploded view of surgical instruments shown in FIG. 1；

Fig. 3 is Fig. 1 end effector, is closed axis and rigidly fixes the exploded view of frame；

Fig. 4 is the exploded view of nail-anvil assembly, trigger shaft, cutting assembly in Fig. 1；

Fig. 5 is the part-structure sectional view after nail-anvil assembly in Fig. 1, trigger shaft, cutting assembly assembling；

Fig. 6 is the cross-sectional view of the part-structure after another nail-anvil assembly, trigger shaft, cutting assembly assembling；

Fig. 7 is the assembling figure that nut and blade are fired in Fig. 1；

Fig. 8 is the exploded view of percussion nut and blade shown in Fig. 9；

Fig. 9 be trigger shaft in Fig. 1, percussion nut and after give up the throne the exploded view of positioning and recognizing device；

Figure 10 is the exploded view of nail bin groupware and the first identification switch in Fig. 1；

Figure 11 is the cross-sectional view of nail bin groupware in Figure 10；

Figure 12 is the assembling figure in Fig. 1 between nail bin groupware and shell；

Figure 13 is the enlarged drawing of circle B in Fig. 5；

Figure 14 a to Figure 14 c is three kinds to the optical cable for the end effector for realizing two kinds of closure height；

Figure 15 is the exploded view of the part-structure of surgical instruments shown in another embodiment of the utility model；

Figure 16 is isostructural for surgical instruments end effector shown in another embodiment of the utility model, nail bin groupware Exploded view.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.A following described upper and lower, left sides, Right, forward and backward positional relationship is using Fig. 1 as benchmark referring to figure, and the direction arrow a-a is up and down direction, the direction arrow b-b in Fig. 1 For front-rear direction, the direction arrow c-c is left and right directions.

Referring to Figure 1 and Fig. 2, surgical instruments shown in an embodiment of the present invention is that electric drive stapler (calls kiss in the following text Clutch), it is used to suture and cut tissue.The stapler includes the body of a gun and the nail bin groupware 100 that is mounted on the body of a gun. The body of a gun includes handle portion (not shown) and work head 10, in the present embodiment, the handle portion be it is reusable can Electric handle is sterilized, fast connector and signal transmission port is internally provided with, is additionally provided in the handle portion to provide electricity The replaceable battery group of power, the power input device (not shown) to input power is provided in the handle portion, and the power is defeated Entering device includes motor.The connection type of the motor and battery is design conventional in the prior art, therefore is not carried out herein detailed Description.The movement such as closure, opening and percussion of work head 10 is driven by the handle portion.

The work head 10 includes shell 1, center bearing bracket 2, closure transmission component (not labeled), fires transmission component (not Label), switching part and end effector 3.The center bearing bracket 2 is fixed in the shell 1, the closure transmission component, Percussion transmission component is enclosed in the shell 1, and the closure transmission component, the one end for firing runner assembly pass through power transmission group Part (not shown) is connected to motor, and the closure transmission component, the other end for firing transmission component connect with end effector 3 respectively It connects and is supported by center bearing bracket 2.The closure transmission component, percussion transmission component are connect with moving handle portion with handle portion Power is transmitted to end effector 3, to drive the realization of end effector 3 to close by closure transmission component, percussion transmission component It closing, percussion, fires reset and open, the closure transmission component, percussion transmission component are the conventional design in this field, therefore herein It is not described in detail.The switching part includes changer lever 12 and the switching push button 11 that connect with the changer lever 12.Institute State changer lever 12 optionally through closure transmission component by the power transmission of power input device to closure driving assembly or By percussion transmission component by the power transmission of power input device to trigger shaft, the switching push button 11 is on shell.Pass through Stirring switching push button 11 drives the movement on closure transmission component, percussion transmission component of changer lever 12 being closed and firing to realize Switch between two states, the changer lever 12 and closure transmission component fire the connection type of transmission component as in this field Conventional design, therefore be not described in detail herein.

Referring to Figure 1, Fig. 3 and Fig. 4, the end effector 3 include nail-anvil assembly 31, the relatively described shifting of nail-anvil assembly 31 It is dynamic to complete the nail bin groupware bracket 32 that the end effector 3 closes or opens, the driving nail bin groupware bracket 32 towards nail 31 direction of anvil assembly moves so that the closure driving assembly that the end effector 3 closes or opens and is arranged in nail-anvil assembly The cutting assembly 33 on the trigger shaft 37 is arranged in trigger shaft 37 in 31.End effector 3 is closed or opened by following closely Anvil assembly 31 and nail bin groupware bracket 32 are completed, and the nail-anvil assembly 31 and nail bin groupware bracket 32 form jaw, which closes The closure of as end effector 3 is closed, the opening of the jaw is the opening of end effector 3.The nail bin groupware 100 is pacified On the nail bin groupware bracket 32.

Fig. 3 to Fig. 6 is referred to, the nail-anvil assembly 31 includes nail anvil bracket 311, the nail anvil bracket 311 is arranged in It nail anvil head 312 on end, the transparent shield 313 being arranged on institute's nail anvil bracket 311 and is located on the nail anvil bracket 311 Resist-nailed seat 314.The nail anvil bracket 311 includes the bottom wall 3114 being oppositely arranged and the left and right sides phase from the bottom wall 3114 On the side wall 3112 that extends to form.The side wall 3112 and bottom wall 3114, which enclose, to be set to form containing cavities (not labeled).The nail anvil branch The front end of frame 311 is embedded with card plug 3113.The resist-nailed seat 314 is fixed on the bottom wall 3114, and opposite with bottom wall 3114 Setting.Longitudinally (the longitudinally of the direction and work head 10 along the nail-anvil assembly 31 is offered on the bottom wall 3114 Identical, it is the direction a-a in Fig. 1) observation panel 315 of elongated shape that extends, the transparent shield 313 is covered on the observation panel On 315, in the present embodiment, the scale zone to play mark action, the scale zone are provided on the bottom wall 3114 Positioned at the side of the observation panel 315.The nail anvil head 312 is removably plugged on the front end of the nail anvil bracket 311, pass through by Nail anvil head 312 is removably plugged on the front end of the nail anvil bracket 311, in order to replace the nail anvil head 312, the end is facilitated to hold The maintenance of row device 3 improves the service life of the end effector 3.In the present embodiment, the nail anvil head 312 and nail anvil bracket 311 snap connection, specific: the hook that the nail anvil head 312 includes head 316 and extends rearwardly to form from the head 316 Portion 317 is provided with the buckle slot 318 with the hook part 317 cooperation, the buckle slot 318 formation in the nail anvil bracket 311 On bottom wall 3114.In the present embodiment, incorporated by reference to Fig. 5 and Fig. 6, the quantity of the hook part 317 is one, the hook part 317 include the cantilever 3171 extended rearwardly to form from the head 316 and the height from the cantilever 3171 along end effector 3 The rectangular fixture block 3172 that the upward projection in direction is formed.In other embodiments, Fig. 6, the number of the hook part 317 ' are referred to Amount can be two, and two hook parts 317 are disposed opposite to each other along the central axes of the end effector 3, each hook The circle that portion 317 ' has the cantilever 3171 ' extended rearwardly to form from the head 316 ' and formed from the 3171 ' projection of cantilever Head dummy fixture block 3172 ' is recessed and the brachycephalic fixture block 3172 ' cooperation in this embodiment, in two side walls 3112 ' Buckle slot 318 '.

Fig. 3 is referred to, the nail bin groupware bracket 32 is cantilever design, and the nail bin groupware bracket 32 includes to fixation The frame body portion 321 of nail bin groupware 100 and the interconnecting piece 322 extended rearwardly to form from the frame body portion 321.The frame body portion 321 tool There is front end 323, the front end 323 of the nail bin groupware bracket 32 is vacantly arranged, which is arranged far from interconnecting piece 322. The interconnecting piece 322 of the nail bin groupware bracket 32 is movably arranged on the closure driving assembly, right in the nail-anvil assembly 31 The frame body portion 321 of the nail bin groupware bracket 32 applies thrust, and the interconnecting piece 322 of the nail bin groupware bracket 32 can be with respect to institute It states closure driving assembly to swing along first direction (arrow d direction in Fig. 3), the first direction is the nail anvil bracket 311 act on the direction of the power on the nail bin groupware bracket 32.It is provided in the frame body portion 321 and the nail bin groupware The fixing slot (not labeled) of 100 cooperations.The interconnecting piece 322 is including connection sheet 324 and from left and right sides of the connection sheet 324 The Extendible flake 325 being downwardly extending.Mounting hole 326 is offered in the connection sheet 324, the mounting hole 326 includes axis hole 327 and tear the escape groove 328 of formation outward from the both ends of the axis hole 327.

Fig. 2 and Fig. 3 are referred to, the closure driving assembly includes 34 He of closure axis being mounted on the center bearing bracket 2 Closure nut 35 on the closure axis 34 is set.Taper transmission is provided between the closure axis 34 and closure transmission component Gear set, the taper driving gear set include the first bevel gear 41 being arranged on the closure transmission component and are arranged in institute The second bevel gear 42 in the support of center bearing bracket 2 is stated, one end of the closure axis 34 is inserted into the second bevel gear 42 and leads to Cross the connection of flat structure.The closure axis 34 is used with the closure nut 35 being disposed thereon and is threadedly coupled, the closure nut 35 The rotary motion for being closed axis 34 is converted into linear motion so that the closure nut 35 can close on edge on the closure axis 34 The longitudinally of sympodium 34 moves linearly.The closure nut 35 is inserted into the mounting hole 326, the closure nut It is clearance fit between 35 and mounting hole 326, the closure nut 35 drives the nail bin groupware bracket 32 in the closure axis Longitudinally on 34 along the closure axis 34 moves.The closure nut 35 includes pressure section 351, from the pressure section 351 The axle portion 352 being downwardly extending and the lateral convex block 353 formed from the outside projection of the axle portion 352, the axle portion 352 are inserted Enter in axis hole 327 so that the axle portion 352 and axis hole 327 cooperate, be clearance fit between the mounting portion and axis hole 327. When being closed nut 35 and the assembly of nail bin groupware bracket 32, lateral convex block 353 is first aligned with escape groove 328, so that the closure 35 sets of nut are set on nail bin groupware bracket 32, then, closure nut 35 are rotated so that the lateral convex block 353 and evacuation Slot 328 misplaces, at this point, the interconnecting piece 322 of nail bin groupware 100 is clamped between pressure section 351 and lateral convex block 353, to prevent Nail bin groupware bracket 32 is separated with closure nut 35, simultaneously as the nail bin groupware bracket 32 and closure nut 35 are again socket, Axle portion 352 is polished rod, mounting hole 326 is unthreaded hole, therefore slight width opposite can be done between nail bin groupware bracket 32 and closure nut 35 Swing on degree.In the present embodiment, the relatively closed nut 35 of nail bin groupware bracket 32 rotates in order to prevent, the nail bin groupware It is fixed with fixing piece 36 on bracket 32, the card slot 361 with the convex block 353 cooperation, the convex block are provided on the fixing piece 36 353 are located in the card slot 361, and the fixing piece 36 is located at the lower section of the interconnecting piece 322, and in the present embodiment, this is fixed Part 36 and nail bin groupware bracket 32 weld.The fixing piece 36 is accommodated in nail bin groupware bracket 32.The center bearing bracket 2, which has, to be held The accommodating cavity 21 set second bevel gear 42, be closed axis 34, the side of left and right two of the accommodating cavity 21 are relatively set with cavity wall 211, The interconnecting piece 322 is accommodated in the accommodating cavity 21, and the interconnecting piece 322 fits in the accommodating cavity 21 and the connection Portion 322 can move in the accommodating cavity 21 along the longitudinally for being closed axis 34.Two Extendible flakes 325 of the interconnecting piece 322 It respectively corresponds two cavity walls 211 to be arranged, Extendible flake 325 is bonded to limit the nail bin groupware bracket 32 in nail bin group with cavity wall 211 The left and right directions of part bracket 32 shakes.In other embodiments, in order to mention mobile accuracy, the interconnecting piece 322 and accommodating It is provided with guide post between chamber 21, and is provided with the arcuate guide with guide post cooperation on accommodating cavity 21 and interconnecting piece 322 Hole improves mobile accuracy to evade face contact.The arcuate guide hole is arranged on Extendible flake 325, really, can not Extendible flake 325 is set, then the arcuate guide hole is formed directly into connection sheet 324.

Pre-bending elastic slice 37 is provided on the nail bin groupware bracket 32, the pre-bending elastic slice 37 is clamped in nail bin groupware bracket Between 32 and shell 1, the pre-bending elastic slice 37 includes the first sheet body portion 371 for being located at 324 top of connection sheet, is arranged in institute It states the second sheet body portion 372 of 321 top of frame body portion and is folded down the folding part 373 formed from second sheet body portion 372, The folding part 373 is located at the lower section in the second sheet body portion 372, and the folding part 373 is arranged close to connection sheet 324, the folding part 373 support frame body portion 321.There is folding line between first sheet body portion 371 and the second sheet body portion 372.By in nail bin groupware Pre-bending elastic slice 37 is arranged between bracket 32 and shell 1 can both prevent to generate rigidity punching between nail bin groupware bracket 32 and shell 1 It hits, and reduces the beat generated in the closure of end effector 3 and opening procedure, help to obtain preferably into nail form.

3 closing course of end effector is as follows: when closure transmission component passes through taper transmission gear driving closure axis 34 When rotating along the first direction of rotation (first direction of rotation can be for clockwise), the closure nut 35 be on closure axis 34 It moves down, at this point, closure nut 35 drives nail bin groupware bracket 32 mobile towards the direction of nail-anvil assembly 31 until the end is held Row device 3 is closed.It, generally will nail in order to guarantee the match result of end effector 3 since nail bin groupware bracket 32 is cantilever design The front end 323 of storehouse assembly support 32 is arranged to lower than interconnecting piece 322, and the purpose of the design is: if front end 323 is arranged At concordant with interconnecting piece 322, then during end effector 3 is closed, the front end (nail bin groupware of nail bin groupware 100 It is located at the part of 32 front end 323 of nail bin groupware bracket in 100) elder generation is contacted with the tissue for being sewn and cutting, at this point, the end Portion's actuator 3 is also to be closed completely, if starting firing action at this time, match result is bad.Therefore, the nail bin groupware bracket 32 It has to again towards the movement of the direction of nail-anvil assembly 31, to realize being closed completely for jaw.During this, nail bin groupware bracket 32 Front end 323 front end by nail bin groupware 100 is applied to the structural relative to force for being sewn and cutting and upward Micro- lift, and then cause the nail bin groupware bracket 32 whole along the upward slight oscillatory of first direction, due to 100 activity peace of nail bin groupware Mounted in closure nut 35 on, nail bin groupware bracket 32 can relatively closed nut 35 along first direction swing, therefore, interconnecting piece 322 is Stress weak part carries out stress weak part by the way that front end 323 to be arranged to the structure type lower than interconnecting piece 322 Reinforce, can avoid 32 bending of nail bin groupware bracket, reduce the fatigue damage of nail bin groupware 100, improves making for nail bin groupware 100 Use the service life.

For the ease of the fixation closure axis 34, described 34 one end of closure axis is fixed on the shell 1, the other end is solid It is scheduled on center bearing bracket 2.In the present embodiment, the closure axis 34 is fixed on the shell 1 by rigid support 51.Institute The fixing groove (not shown) for being recessed on rigid support 51 and docking with the closure axis is stated, it is in the present embodiment, described rigid Property bracket 51 and closure axis 34 between be provided with bearing 52, the bearing 52 is arranged in the fixing groove.The rigid support 51 include bottom plate 511 and upwardly extend the adjutage 512 to be formed from the bottom plate 511, and the adjutage 512 fixes in described On cardiac skeleton 2, the fixing groove is arranged on the bottom plate 511.Since the closure axis 34 is fixed on institute by rigid support 51 It states on shell 1, to solve in the prior art since closure axis 34 is directly anchored to cause the damage to shell 1 on shell 1 The problem of bad and closure axis 34 itself is along the offset of axis, helps to improve the service life of shell 1, improves the accurate of closure Property.

Incorporated by reference to Fig. 4 and Fig. 8, the cutting assembly 33 includes the percussion nut 331 being threadedly coupled with the trigger shaft 37 With the blade 332 being arranged on the percussion nut 331.The extending direction of the trigger shaft 37 prolongs with the lengthwise of nail-anvil assembly 31 Direction is stretched, the knife spine (not labeled) that the blade 332 has blade face and is disposed opposite to each other with the blade face (not labeled) is described The interior concane gap 333 extended from the knife spine towards the blade face direction is provided on knife spine, since the blade face has indent Notch helps to improve the service life of blade 332 so that blade 332 forms buffering when cutting backward.It is described Blade 332 can be integrally formed with percussion nut 331.In the present embodiment, nut 331 is seperated sets with percussion for the blade 332 It sets, which is fixed on percussion nut 331, can pass through the company of welding or riveting between blade 332 and percussion nut 331 Connect or pass through pin connection.The percussion nut 331 is located in the containing cavities of nail bin bracket 311, the exposure of percussion nut 331 In the observation panel 315, by the observation panel 315 it can be observed that the position of percussion nut 331, fires and hit to understand The real time position of fat nut 331.In order to intuitively recognize the position of percussion nut 331, the percussion nut 331 and nail anvil group There are color difference between part 31, transparent shield 313.

Incorporated by reference to Fig. 1 and Fig. 2, electric control part is provided in the body of a gun, the electric control part includes that withdrawing identifies in place Device, triggering inductive switch 83 and closure level identification device.

Fig. 2 and Fig. 9 are referred to, identification device includes the trigger switch 81 being arranged on the shell 1 to the withdrawing in place With triggering application member 82, which can be optoelectronic switch, and the triggering application member 82 is pilot pin, when described fixed After position needle 82 is inserted into optoelectronic switch, which is triggered, then the electric control part of the surgical instruments obtains percussion spiral shell Mother 331 is retracted into the information in home position, which can be informed operation by electric control part by way of acoustic control or photoelectricity Person.The side of the trigger switch 81 is provided with fixed plate 14, which is fixed on shell 1, in the fixed plate 14 It is provided with the first elastic component 15.The side of first elastic component 15 is arranged in the pilot pin 82.The percussion nut 331 supports Pilot pin 82 is held, when the percussion of percussion nut 331 resets, the percussion nut 331 pushes the pilot pin 82 to open towards triggering It closes 81 movements and triggers the trigger switch 81；When the percussion nut 331 percussion, it is described fixed that first elastic component 15 drives Position needle 82 is far from trigger switch 81 and close to cutting assembly 33.When specifically used, first elastic component 15 is in the positioning Apply the first power on needle 82, which separates pilot pin 82 with trigger switch 81 so that the trigger switch 81 does not trigger, institute It states percussion nut 331 and applies the second power in pilot pin 82, second to push dynamic pilot pin 82 mobile towards 81 direction of trigger switch for this To trigger the trigger switch 81, which is greater than the first power, and percussion nut 331 has been defined on the trigger shaft 37 not The first firing position (percussion 33 position of nut is realized in Fig. 4) when percussion, when percussion nut 331 is located at the first percussion position It sets, the percussion nut 331 applies the second power to pilot pin 82, when the percussion nut 331 is not in first firing position, Then second power is cancelled from the pilot pin 82, and described first pushes dynamic pilot pin 82 separates with trigger switch 81.At this In embodiment, which is the spring being set in the pilot pin 82, is provided with and compresses in the pilot pin 82 First elastic component 15 compresses ring 821.Slipping block 16, the slipping block 16 and trigger shaft 37 are arranged on the trigger shaft 37 Clearance fit, the percussion nut 331 support the pilot pin 82 by the slipping block 16, and the side of the slipping block 16 is set It is equipped with the second mobile elastic component 17 of the direction for driving the slipping block 16 towards percussion nut 331, it is specific: the trigger shaft 37 Including the thread segment 371 being threadedly engaged with the percussion nut 331 and the light extended from the thread segment 371 along longitudinally Bar portion 372 is arranged slipping block 16 in the polished rod portion 372.The percussion nut 331 supports slipping block 16 and by the slipping block 16 push away the first firing position, and the percussion nut 331, the second elastic component 17 are oppositely arranged on the two sides of slipping block 16.This Two elastic components 17 are spring.By the way that the withdrawing is arranged, identification device can allow the surgical instruments to pass through automatically controlled mode in place Know whether the percussion nut 331 retreats in place, compared with prior art, can evade and repeatedly fire retrogressing in the surgical operation When percussion nut 331 retreat problem not in place, without by calculate driving motor circle number can be realized retrogressing position, help In the quality for improving operation.

Referring to Figure 1, to Figure 13, the nail bin groupware 100 includes warehouse 91, is arranged in the warehouse 91 by Fig. 2, Figure 10 Several suturing nails (not shown), the relatively described warehouse 91 of the driving suturing nail move nail-pushing part (not shown), driving institute It states the relatively described warehouse 91 of the nail-pushing part actuator 92 moved, the bracket 93 fixed on the warehouse 91, be arranged in the storehouse The sliding trigger member 99 that on body 91 shield top plate 90, is arranged in the warehouse 91.Inductive switch 83 is triggered to trigger the touching Send out inductive switch 83.The staple cavity 94 of several storage suturing nails is provided in the warehouse 91, the warehouse 91 includes group Contact platform 95 and warehouse side wall 96 are knitted, the staple cavity 94 contacts platform 95 through the tissue.The sliding trigger member 99 It is arranged in warehouse 91, and the sliding trigger member 99 is pushed by the actuator 92 and position is occurred in the warehouse 91 and is become Change.The slid chamber 97 to store the sliding trigger member 99 is provided in the warehouse 91, which can be It moves in the slid chamber 97 and makes 99 change in location of sliding trigger member, the sliding trigger member 99 passes through actuator 92 It is pushed to move in the slid chamber 97.In the present embodiment, the general configuration and cause in the prior art of the actuator 92 Moving part is identical, and difference is: the actuator 92 in the present embodiment is equipped with to drive the sliding trigger member 99 is mobile to support Pushed section 921.In order to make the compact-sized of the pushing portion 921, recess portion 922 is offered on the actuator 92, the pushing portion 921 The rear wall of recess portion 922 is formed positioned at the rear of the recess portion 922.The sliding trigger member 99 is mounted in the recess portion 922.? First position and the second position have been defined in the warehouse 91, and (in Fig. 4, the position where the sliding trigger member 99 of solid line is First position, 99 position of sliding trigger member of dotted line are the second position), the actuator 92 pushes the sliding trigger member 99 are moved to the second position from the first position.The triggering inductive switch 83 is located at and is located on first position Trigger member 99 is slid to trigger.When the actuator 92 pushes sliding trigger member 99 to leave first position, the sliding trigger member 99 It is detached from actuator 92 and enters to the second position, at this point, the sliding trigger member 99 being located on the second position is opened with triggering induction 83 dislocation are closed, the sliding trigger member 99 on the second position can not trigger the triggering inductive switch 83.In this embodiment, the touching Hair inductive switch 83 is located on shell 1.The bottom of the slid chamber 97 has the conduit 971 for being inclined outwardly setting, the sliding Trigger member 99 is located in the conduit 971 and moves along the direction of the conduit 971.Third bullet is additionally provided in the warehouse 91 Property part 98, the actuator 92 push the sliding trigger member 99 to be moved to the second position from the first position, work as institute It states sliding trigger member 99 and is moved to the second position, the third elastic component 98 is formed with sliding trigger member 99 interferes with by the cunning It moves trigger member 99 and is maintained at the second position.The third elastic component 98 can be elastic slice.In the present embodiment, when sliding is touched For outbox 99 at first position, elastic slice 98 supports the warehouse side wall 96 of sliding trigger member 99 to prevent the sliding trigger member 99 from recessed It is detached in portion 922, when the sliding trigger member 99 is moved to the second position under the drive of actuator 92, elastic slice 98 will Deformation occurs, is moved to 2 from 1 in Figure 13, at this time elastic slice 98 support sliding trigger member 99 rear, elastic slice 98 with It slides and forms interference between trigger member 99 so that the sliding trigger member 99 is fixed on the second position.For the ease of incuding, Induction window (not labeled), the specific induction window observation side wall 3112 and bracket 93 are offered on nail bin groupware 100, when The sliding trigger member 99 is located at the first position, and the sliding trigger member 99 is exposed to outer by the induction window.At this In embodiment, elastic slice 98 is formed on bracket 93.When specifically used, the triggering inductive switch 83 is Hall switch, described Sliding trigger member 99 is the magnet to trigger the Hall switch；Alternatively, the triggering inductive switch 83 is reflection-type photoelectricity Switch, the sliding trigger member 99 are the reflecting element to trigger the reflection-type optoelectronic switch.In specific implementation, due to The sliding trigger member 99 for pushing and occurring in the warehouse 91 change in location by the actuator 92 is provided in warehouse 91, from And can according to sliding trigger member 99 position judge whether the nail bin groupware 100 is previously used, and surgical instruments in use, by The trigger member triggered by the sliding trigger member 99 is provided in electric control part, to pass through automatically controlled identification nail bin groupware 100 Whether fired, and then was avoided medical unexpected.

4a referring to Figure 1, the closure level identification device include along the moving direction of 100 bracket 32 of nail bin groupware It is arranged and the first sensing device 85 and the second sensing device 86 to incude 100 bracket 32 of nail bin groupware；In the pincers On the closing direction of mouth, the closure height of first sensing device 85 and the corresponding jaw of the second sensing device 86 is arranged in difference Height on.First sensing device 85 and the second sensing device 86 incude the Extendible flake 325, which can be set On center bearing bracket 2.First sensing device 85 and the opposite nail bin groupware bracket 32 of the second sensing device 86 are arranged in nail bin The same side of assembly support 32.4b referring to Figure 1, in other embodiments, first sensing device 85 and the second induction dress Set 86 two sides that nail bin groupware bracket 32 can also be set with respect to nail bin groupware bracket 32.In Figure 14 a and Figure 14 b, first Sensing device 85 and the second sensing device 86 are optoelectronic switch, when end effector 3 is closed, are located at different height position On optoelectronic switch be extended piece 325 respectively and block, to identify two different closure height of end effector 3, complete electricity The closure height of control feedback end effector 3.Really, first sensing device, the second sensing device can be Hall switch, At this point, the magnet to trigger the first sensing device, the second sensing device need to be arranged on the nail-anvil assembly.

In other embodiments, when nail-anvil assembly 31 is moving member, closure driving assembly drives the nail-anvil assembly 31 move so that the jaw closes or opens towards 32 direction of nail bin groupware bracket, at this point, the first sensing device 85 and second Sensing device 86 is arranged along the moving direction of the nail-anvil assembly 31 and to incude the nail-anvil assembly 31；In the jaw Closing direction on, the closure of the corresponding jaw of first sensing device 85 and the second sensing device 86 is highly arranged in different In height.First sensing device 85, the second sensing device 86 can also be optoelectronic switch.Likewise, the first induction dress Set the 85, second sensing device 86 so can also need to be then arranged to trigger for Hall switch on the nail-anvil assembly 31 The magnet of one sensing device 85, the second sensing device 86.The quantity of above-mentioned sensing device can also be arranged two according to actual needs More than a.

In addition to this, 4c, the closure level identification device can also be setting in the nail bin groupware branch referring to Figure 1 An optoelectronic switch on the moving direction of frame 32 offers the aperture with optoelectronic switch cooperation on the Extendible flake 325, Since the optoelectronic switch is blocked or penetrating, to there is the optoelectronic switch to obtain two different working conditions, to identify end Two different closure height of portion's actuator 3.In the present embodiment, lengthwise of the nail bin groupware bracket 32 along the closure axis 34 Direction translation.The embodiment is also change to: an optoelectronic switch is arranged on the moving direction of the nail-anvil assembly 31 On, the nail-anvil assembly 31 has the Extendible flake 325 extended towards the nail bin groupware bracket 32, opens up on the Extendible flake 325 There is the aperture 329 with optoelectronic switch cooperation.

Above-mentioned nail bin groupware identification switch two is by being arranged on the moving direction of storehouse assembly support and described to incude The two or more sensing devices of nail bin groupware bracket 32, alternatively, by being set on the moving direction of the nail-anvil assembly 31 Set and the two or more sensing devices to incude the nail-anvil assembly 31, alternatively, in the nail bin groupware bracket 32 or One optoelectronic switch is set on the moving direction of nail-anvil assembly 31, then in corresponding nail-anvil assembly 31 or nail bin groupware bracket 32 The aperture 329 of upper setting and optoelectronic switch cooperation, thus identify two different closure height of end effector 3, in this way, The tissue of different-thickness can be only sutured with a kind of surgical instruments, applicability is wide.

Incorporated by reference to Figure 15 and Figure 16, it coincide shown in stapler shown in another embodiment of the utility model and embodiment one Device structure is roughly the same, but by following three important difference point: one, closure transmission component, percussion transmission component being formed all Change the mold block, two, the structure of end effector, three, the structure of locking nut and center bearing bracket 2 '.It is provided with and cuts in the shell 1 ' Case 20 ' is changed, the closure transmission component, percussion transmission component and the setting of changer lever 12 ' are described to cut in the a-b box 20 ' The connection opening (not labeled) for offering and being stretched out for the changer lever 12 ' to connect with switching push button 11 ' is changed on case 20 '.Pass through Transmission component, percussion transmission component setting will be closed in a-b box, so that modular construction is realized, convenient for assembling.The end Portion's actuator includes nail-anvil assembly, mobile to complete the nail bin that the end effector closes or opens relative to the nail-anvil assembly Assembly support 32 ', the driving nail bin groupware bracket 32 ' move so that the end effector closure towards nail-anvil assembly direction Or closure driving assembly and the setting cutting assembly on the nail-anvil assembly opened.The structure of the cutting assembly, nail-anvil assembly It is identical as the structure in embodiment one, it repeats no more, the nail anvil bracket 311 ' includes the lock that projection is formed on side wall 3112 ' Tight block 318 '.The nail bin groupware bracket 32 ' includes top plate portion 321 ' and extends downwardly from the 321 ' left and right sides of top plate portion The adjutage 322 ' of formation, the top plate portion 321 ' and adjutage 322 ' surround the nail bin chamber (figure to install nail bin groupware 100 Show), one end of the top plate portion 321 ' offers axis hole 327 '.The closure driving assembly includes being arranged in the center branch Closure axis 34 ' on frame 2 ' and the closure nut 35 ' being threadedly coupled with the closure axis 34 '.The closure driving assembly is equally logical Taper driving gear set is crossed to connect with closure transmission component.The closure nut 35 ' includes block portion 351 ', from the block portion 351 ' have extended to form forward lock sheet 352 ', and the locking with the latch segment 318 ' cooperation is formed on the lock sheet 352 ' Hole 353 ', in the present embodiment, the lock sheet 352 ' are that simultaneously downward bending extends to form forward from the block portion 351 ', should Locking hole 353 ' is the notch extended to form by 352 ' bending of lock sheet.It is formed through on the block portion 351 ' and is closed with described The threaded hole 354 ' that sympodium 34 ' is threadedly engaged, the closure axis 34 ' pass through the threaded hole 354 ' and are inserted into nail bin groupware branch In the axis hole 327 ' of frame 32 ', nail bin groupware bracket 32 ' and closure axis 34 ' are fixed by bearing 52 '.The block portion 351 ' is set It sets in the accommodating cavity 21 ', the closing direction being provided between the accommodating cavity 21 ' and block portion 351 ' along end effector prolongs The arc with guide post cooperation is provided on the guide post (not shown) stretched, the accommodating cavity 21 ' and block portion 351 ' Pilot hole 22 ', in the present embodiment, corner of the guide post setting in accommodating cavity 21 '.By by nail bin groupware bracket 32 ' Setting is arranged in accommodating cavity 21 ' on closure nut 35 ', and by closure nut 35 ', passes through block portion 351 ', accommodating cavity 21 ' The arcuate guide hole with guide post cooperation is provided in interior setting guide post and accommodating cavity 21 ' and block portion 351 ' 22 ', it is swung along the longitudinal direction so as to limit nail bin groupware bracket, compared with prior art, the shifting of nail bin groupware bracket 32 ' It moves more stable, improves the match result of end effector.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of end effector, including nail-anvil assembly, closed with completing the end effector relative to the nail-anvil assembly is mobile The nail bin groupware bracket and the driving nail bin groupware bracket for closing or opening move so that the end towards nail-anvil assembly direction The closure driving assembly that portion's actuator closes or opens, which is characterized in that the nail bin groupware bracket includes to install nail bin The frame body portion of component and the interconnecting piece extended rearwardly to form from the frame body portion, the closure driving assembly include closure axis, institute The interconnecting piece for stating nail bin groupware bracket is movably arranged on the closure axis, and the nail bin groupware bracket is on the closure axis Longitudinally along the closure axis moves；Apply thrust in frame body portion of the nail-anvil assembly to the nail bin groupware bracket, The interconnecting piece of the nail bin groupware bracket can the relatively described closure driving assembly along first direction swing, the first direction is institute State the direction for the power that nail anvil bracket acts on the nail bin groupware bracket.

2. end effector as described in claim 1, which is characterized in that the closure driving assembly further includes being arranged described The closure nut being closed on axis, the closure nut are connect with the closure axle thread, and the interconnecting piece has mounting hole, described Closure nut is inserted into the mounting hole, is clearance fit between closure nut and the mounting hole.

3. end effector as claimed in claim 2, which is characterized in that the closure nut include pressure section, from described in support The axle portion and the lateral convex block formed from the outside projection of the axle portion, the axle portion that splenium is downwardly extending are inserted in the peace It fills in hole, is clearance fit between the axle portion and mounting hole, the interconnecting piece of the nail bin groupware bracket is clamped in described compress Between portion and lateral convex block.

4. end effector as claimed in claim 3, which is characterized in that it is fixed with fixing piece on the nail bin groupware bracket, The card slot with convex block cooperation is provided on the fixing piece, the fixing piece is located at the lower section of the interconnecting piece.

5. a kind of surgical instruments, including handle portion and work head, which is characterized in that the work head includes such as Claims 1-4 End effector described in any one of item.

6. surgical instruments as claimed in claim 5, which is characterized in that the work head further includes shell and is arranged in the shell In vivo and the center bearing bracket to the fixation end effector, the interconnecting piece includes connection sheet and from described connection sheet or so The Extendible flake that two sides are downwardly extending, the center bearing bracket is provided in accommodating cavity and the interconnecting piece can be in the accommodating cavity The interior longitudinally along closure axis moves, and the interconnecting piece fits in the accommodating cavity.

7. surgical instruments as claimed in claim 6, which is characterized in that the frame body portion has far from the preposition of interconnecting piece setting End, the front end are arranged to lower than the interconnecting piece.

8. surgical instruments as claimed in claim 7, which is characterized in that the work head further includes shell, the nail bin groupware Pre-bending elastic slice is provided on bracket, the pre-bending elastic slice is clamped between nail bin groupware bracket and shell, and the pre-bending elastic slice supports Hold the frame body portion.

9. surgical instruments as claimed in claim 8, which is characterized in that the pre-bending elastic slice includes being located above the connection sheet The first sheet body portion, the second sheet body portion for being arranged in above the frame body portion and being folded down from second sheet body portion formed Folding part, the folding part supports the frame body portion.

10. surgical instruments as claimed in claim 6, which is characterized in that the nail bin groupware includes warehouse, is arranged in the storehouse The nail-pushing part and the driving nail-pushing part of the relatively described warehouse movement of intracorporal several suturing nails, the driving suturing nail are with respect to institute The actuator of warehouse movement is stated, is provided in the warehouse and is pushed by the actuator and change in location is occurred in the warehouse Sliding trigger member, first position and the second position have been defined in the warehouse, the actuator pushes the sliding to trigger Part is moved to the second position from the first position, and the surgical instruments further includes being located on first position to slide triggering The triggering inductive switch of part triggering.