CN209018812U - A kind of surgical instrument containing flexible latch mechanism - Google Patents

Abstract

The utility model discloses a kind of surgical instruments containing flexible latch mechanism, include distal end working head, the handle of proximal end scissors-type and the lengthening bar portion extended therebetween；The handle also includes latch mechanism；The latch mechanism includes the first cantilever being linked together with rear handle and connect flexible lock strap with the first cantilever, and the flexibility lock strap includes multiple first lock teeth；The latch mechanism also includes trigger and locking bolt, and the trigger includes trigger shaft, the first cam surface, the second cam surface and finger buckle；The locking bolt includes hammerlock and the second lock tooth to match with the first lock tooth；The latch mechanism also includes button and elastic element, the trigger, elastic element and button are mounted in the front handlebar, wherein the button and first cam surface interact, it drives the trigger to rotate around trigger shaft, realizes that latch mechanism switches between effective model and invalid mode.

Description

A kind of surgical instrument containing flexible latch mechanism

Technical field

The utility model relates to Minimally Invasive Surgery instrument more particularly to a kind of laparoscopic surgical instruments containing flexible latch mechanism.

Background technique

Surgical operating instrument has had centuries history, and doctor completes tissue with different surgical instruments in surgical operation Crawl is sheared, separation, blood coagulation, and the operation such as suture closure, surgical operating instrument develops mature by centuries.Laparoscope The clinical of operation is carried out more than 30 years, just in rapid advances.Briefly, laparoscopic surgery, that is, operative doctor is using lengthening Laparoscope hand-held apparatus, enter patient's body via the puncture channel of natural cavity or building, complete tissue crawl, shearing, Separation, blood coagulation, the operation such as suture closure.

Laparoscopic surgery opens abdomen ophthalmic surgical relative to tradition, and main advantage is small for patient trauma to can reduce slight illness Restore with acceleration.Current endoscope-assistant surgery generally includes operation on gallbladder, laparoscopic inguinal hernia repair, and peritoneoscope stomach bottom folds Operation, laparoscopic splenectomy, the operation such as laparoscopic appendectomy operation, the whole operation difficulty of endoscope-assistant surgery is larger, Used time is longer, and operative doctor needs 1 ~ 3 hour in lasting surgical procedure.Due to the limitation of operative space, operative doctor is often needed Will be for a long time with difficult gesture operation instrument, doctor is easy fatigue, or even induces arthritis, the risks such as scapulohumeral periarthritis.Laparoscope Hand-held apparatus should meet Human Engineering Principle, support a variety of gripping gimmicks, reduce extreme operation posture and the sense that lessens fatigue.

Operate it is same instrument when, different operative doctors or same operative doctor are in different operations or same operation In in specific a certain operating process, the gimmick that doctor holds surgical instrument is had nothing in common with each other.Studies have shown that in endoscope-assistant surgery, such as Finger gripping shown in Fig. 2 is enforced the law (precision grip) (or for precision grip method precision grip) and such as Fig. 3 institute The palm grip method (pam grip) shown is most common two kinds of gimmicks.

In existing hysteroscope hand-held apparatus, for example, endoscope-assistant surgery scissors, endoscope-assistant surgery elastic separating plier, endoscope-assistant surgery nipper etc., As shown in Figure 1, generalling use scissorstype handle, a variety of gripping gimmicks can be supported.In order to which lasting realization clamps organ or tissue, It is existing that corresponding locking mechanism, such as Patent No. are increased using the surgery hand-held apparatus of scissorstype handle The Chinese patent of CN2014108503121 discloses the card locking device and surgical instrument of a kind of carrier state handoff functionality, however existing Although some patents realize the clamping of tissue or organ and unlock uses, but due to the individual difference and hand of operative doctor The complexity of art environment mainly has following problems urgently to be resolved:

On the one hand, the hand-type of different operative doctors is of different sizes, and the operation handedness of different operative doctors is also not to the utmost Identical, the finger that existing surgical instrument generally can satisfy most operative doctors can be carried out in operation is normally carried out operation, But it seldom considers how that the finger for making operative doctor comfortably operates, needless to say meets the operative doctor that minority has particular/special requirement Demand, such as: be accustomed to left slash operative doctor and according to each finger of operative doctor it is different firmly habit matched The finger zone of action；

On the other hand, how operative doctor uses the same hand, easily carries out a variety of in continuous surgical procedure Different gimmicks switch over, for example finger gripping is enforced the law the switching between palm grip method, or under different gimmick states The switching for carrying out different conditions facilitates operative doctor that can carry out various accurate operations using optimal hand-held posture, and subtracts The fatigue of the youthful and the elderly's time operation；

In addition, how for tissue or organ need the continuous operation for clamping and unclamping with without locking mechanism participate in into Operation etc. is switched fast between capable quick drawing and strip operation.

The prior art mainly passes through increase operation path, is combined use using the surgical instrument of different function, or Using modes such as more people auxiliary: using the hand-held apparatus of with locking mechanism such as in an operation path, another operation is logical Common hand-held apparatus is used in road；Or the surgical instrument of different function is subjected to disengaging abdomen in the same operation path Switching.Nonetheless, also only part is able to satisfy the realization requirement of operative doctor, but really increases the pain of patient, increases The various operation risks of operating time and thus bring.

Utility model content

Therefore, in order to solve problems in the prior art, in the one aspect of the utility model, propose a kind of containing flexible lock machine The surgical instrument of structure includes distal end working head, the handle of proximal end scissors-type and the lengthening bar portion extended therebetween；The scissors Type handle includes front handlebar, rear handle and the arm pivot post for connecting it, and the front handlebar and rear handle can be relative to the hands Handle shaft rotates；The working head includes a pair of of binding clip and the driving mechanism being attached thereto；The lengthening bar portion packet Runner, outer bar portion and draw-in bar are included, the outer bar portion and runner are fixed together and are mounted in front handlebar, the draw-in bar one End is connect with the driving mechanism and its other end is connect with rear handle, and the handle also includes latch mechanism；The latch mechanism packet It connect flexible lock strap containing the first cantilever being linked together with rear handle and with the first cantilever, the flexibility lock strap includes multiple the One lock tooth；The latch mechanism also includes trigger and locking bolt, and the trigger includes trigger shaft, the first cam surface, the second cam surface And finger buckle；The locking bolt includes hammerlock and the second lock tooth to match with the first lock tooth；The latch mechanism also includes button And elastic element, the trigger, elastic element and button are mounted in the front handlebar, wherein the button and described first convex Wheel face interaction, drives the trigger to rotate around trigger shaft, realizes latch mechanism between effective model and invalid mode Switching；When the latch mechanism is effective model, the first lock tooth and the second lock tooth are mutually twisted, and handle is before after permission Handle closes up and handle is opened away from front handlebar after limiting, as lock function；Apply finger buckle described in outer power drive and makes institute It states hammerlock to rotate around trigger shaft, so that the second lock tooth and the first lock tooth disengage, handle is away from front handlebar after permission It opens, as unlocking function.

A kind of optional technical solution, wherein the flexibility lock strap includes the limit rib of two sides setting, the front handlebar packet Containing with the matched guide groove of the limit rib and limit the flexible lock strap and moved along guide groove.

Another optional technical solution, wherein the flexibility lock strap is any along the front handlebar space after locking bolt Bending.

Another optional technical solution, wherein the button includes the first button and the second button, first button Two sides of the front handlebar are separately mounted to the second button.

Another optional technical solution, wherein the front handlebar includes the long and narrow sliding slot through two side, described First button and the second button can slide in the long and narrow sliding slot.

Another optional technical solution, wherein the direction of the long and narrow sliding slot is basically parallel to the lengthening bar portion.

Another optional technical solution, wherein the rear side of runner is arranged in the long and narrow sliding slot, and meets and want as follows Ask: left or right hand is enforced the law using finger gripping when operating the handle, and what the index finger of the hand of operation can be convenient stir wherein one A button；When left or right hand operates the handle using palm grip method, what the thumb of the hand of operation can be convenient stirs it In a button.

Another optional technical solution, wherein the front handlebar includes the arc chute through two side, described First button and the second button can rotate in the arc chute.

Another optional technical solution, wherein the rear side of runner is arranged in the arc chute, and meets and want as follows Ask: left or right hand is enforced the law using finger gripping when operating the handle, and what the index finger of the hand of operation can be convenient stir wherein one A button；When left or right hand operates the handle using palm grip method, what the thumb of the hand of operation can be convenient stirs it In a button.

Detailed description of the invention

In order to more fully understand the essence of the utility model, it is described in detail below in conjunction with attached drawing, in which:

Fig. 1 is a kind of surgical operating instrument simulation schematic diagram of prior art；

Fig. 2 is enforced the law schematic diagram shown in Fig. 1 using finger gripping；

Fig. 3 is that palm grip method schematic diagram is used shown in Fig. 2；

Fig. 4 is the surgical operating instrument stereoscopic schematic diagram of the utility model；

Fig. 5 is surgical instrument finger control partition schematic diagram described in Fig. 4；

Fig. 6, which is Fig. 4, to carry out when finger gripping is enforced the law effective model using the right hand and switches schematic diagram to invalid mode；

Fig. 7, which is Fig. 4, to carry out when finger gripping is enforced the law invalid mode using the right hand and switches schematic diagram to effective model；

Fig. 8 is Fig. 4 when carrying out palm grip method using right hand effective model switches side schematic diagram to invalid mode；

Fig. 9 is Fig. 7 when carrying out palm grip method using right hand effective model switches other side schematic diagram to invalid mode；

Figure 10 is the exploded view of surgical instrument described in Fig. 4；

Figure 11 is the perspective view of button sliding block shown in Figure 10；

Figure 12 is the another three-dimensional view of button sliding block shown in Figure 11；

Figure 13 is the perspective view of trigger shown in Figure 10；

Figure 14 is flexibility lock strap described in Figure 10 and locking bolt cooperation schematic diagram；

Figure 15 is locking bolt perspective view shown in Figure 14；

Figure 16 is the another three-dimensional view of locking bolt described in Figure 15；

Figure 17 is front handlebar schematic internal view shown in Figure 10；

Figure 18 is the schematic internal view of front handlebar lid shown in Fig. 10；

Figure 19 is the cut away view under the utility model invalid mode；

Figure 20 is 20-20 partial enlarged view shown in Figure 19；

Figure 21 is the cut away view of lock state under the utility model effective model；

Figure 22 is 22-22 partial enlarged view shown in Figure 21；

Figure 23 is the cut away view of the utility model unlocked state；

Figure 24 is 24-24 partial enlarged view shown in Figure 23；

In all views, identical label indicates equivalent part or component.

Specific embodiment

Disclosed herein is the embodiments of the present invention, it should be understood, however, that disclosed embodiment is only this reality With novel example, the utility model can be realized by different modes.Therefore, this disclosure be not to be construed for It is restrictive, but only as the basis of claim, and it is originally practical new as instructing those skilled in the art how to use The basis of type.

With reference to Fig. 1-4, for convenience of stating, the side of subsequent all Proximity operation persons is defined as proximal end, and far from operator One side is defined as distal end.

As shown in Figure 1-3, working as casing especially in endoscope-assistant surgery carrying out surgical operation in conjunction with described in foregoing background Component (not shown) is inserted in place, and various Minimally Invasive Surgery instruments, such as surgery hand-held apparatus 10 can pass through sheath assembly shape At channel be inserted into body cavity.Possibility needs while the one or more sheath assemblies of use in surgical procedure, and surgery hander Tool 10 also needs to configure one or more progress according to operation while operating.Fig. 1 is a kind of typical surgery hand of the prior art Holder tool 10, the working head 106 including distal end, proximal handle 11 and the lengthening bar portion 105 extended therebetween；The handle packet Containing front handlebar 101, rear handle 102 and the arm pivot post 103 for connecting it, the front handlebar 101 and rear handle 102 can be relative to institutes Arm pivot post 103 is stated to rotate；The front handlebar 101 includes preceding finger loop 110, and the rear handle 102 includes thumb circle 120, preceding 111 bottom of finger loop is provided with support arm 112.The upside setting unlock trigger 115 of the preceding finger loop 111 is used In the locking and unlocking for realizing the front handlebar 101 and rear handle 102.

Current endoscope-assistant surgery generally includes operation on gallbladder, laparoscopic inguinal hernia repair, peritoneoscope stomach bottom folding hand Art, laparoscopic splenectomy, the operation such as laparoscopic appendectomy operation.The whole operation difficulty of endoscope-assistant surgery is larger, uses When it is longer, operative doctor needs 1 ~ 3 hour in lasting surgical procedure.It is grasped to mitigate operation Chinese medicine growth time with difficult posture Make instrument, existing surgery hand-held apparatus is a degree of to consider Human Engineering Principle, can usually support a variety of grippings Gimmick, it is a degree of to reduce extreme operation posture and the sense that lessens fatigue.Finger gripping as shown in Figure 2 is enforced the law and as shown in Figure 3 Palm grip method be most common two kinds of gimmicks.

Tractor is carried out as Fig. 1 and Fig. 2 are illustrated operative doctor and enforced the law using typical surgical hand-held apparatus 10 with finger gripping The grip state of official or grasping tissue: the third finger of a certain hand of operative doctor passes through the preceding finger loop 111, and middle finger is attached to 115 position of unlock trigger of the upside of preceding finger loop 111, medial surface of little finger press on the support arm 112；Its thumb Rotate back and forth the rear handle 102 around the arm pivot post 103 across the thumb circle 120 movement thumb, and by described The movement of handle 102 is converted into the movement of the distal end working head 106 after bar portion 105 will be described.

Tractor is carried out with palm grip method using typical surgical hand-held apparatus 10 as Fig. 1 and Fig. 3 illustrate operative doctor The grip state of official or grasping tissue: the palm of a certain hand of operative doctor is adjacent to the side of the handle 11, and thumb is pinned Rear handle 102 is clamped in palm side by handle 11, forms a U-shaped clamping, and little finger of toe is pressed at described preceding On the support arm 112 of hand 101, the third finger passes through the preceding finger loop 110, and middle finger is attached to the upper of the preceding finger loop 110 115 position of unlock trigger of side, movement rotate back and forth the front handlebar 101 around the arm pivot post 103, and by the bar The movement of handle 102 is converted into the movement of the distal end working head after portion 105 will be described.

In clinical application, the finger gripping is enforced the law of equal importance with palm grip method, and usually requires frequent switching. Such as when needing to carry out tissue removing and appear blood vessel in clinical operation, one hand of operating doctor holds ultrasound knife or elastic separating plier is small The heart it is thriving carry out tissue removing, another hand generally has to hold nipper operation organ or tissue, forms synergistic effect, side Tissue strip operation can accurately be completed.When operative site does not appear sufficiently, or carry out tissue removing position it is short When variation spatial extent in time is larger, operative doctor generallys use finger gripping and enforces the law to operate instrument, and needs lock machine Structure is set as invalid state.Those skilled in the art is to be understood that be enforced the law and latch mechanism invalid state using finger gripping When, operation instrument is the most flexible, therefore can open and close instrument quickly to grab, and clamp draws organ or tissue, flexibly Mobile organ or tissue, so as to matching tissue removing nimbly and freely.However it is enforced the law using finger gripping and there is no secondary locking When, the finger of operative doctor is quite tired.It is not moved when the position short time that operative site sufficiently appears or carry out tissue removing When, operative doctor is it is generally desirable to quickly be switched to lock function effective status, by the coupling mechanism force clamp tightly of instrument itself Organ or tissue pulls or stirs the organ or tissue of block vision.Under lock function effective status, instrument progress is not operated usually Multiple quick opening and closing movement.When the organ or tissue of crawl or drawing is larger or heavier, operative doctor or assistant are logical It often is switched to palm grip method, because palm grip method tends to force and the freer diastole of posture, facilitates and is grasped energetically Make or can reduce fatigue.

It is inconvenient that the latch mechanism effective status and invalid state of the surgical instrument 10 of the prior art described in Fig. 1 switch, especially The extremely difficult switching for carrying out effective status and invalid state when being using palm grip method.Further, since middle finger is exerted oneself, position is just It is 115 position of unlock trigger of the upside of preceding finger loop 111, when operating instrument progress organ crawl, if middle finger is slightly exerted oneself, holds It easily causes middle finger to keep handle 11 in the unlocked state by trigger squeeze 115, that is, latch mechanism false triggering is easy to cause to unlock.

A kind of surgical instrument 20 containing flexible latch mechanism of the utility model embodiment is illustrated in detail in Fig. 4-18, includes distal end Working head 23, proximal end scissorstype handle 21 and the lengthening bar portion 22 extended therebetween；The handle 21 includes front handlebar 206, Handle 202 and its arm pivot post 261 is connected afterwards, and the front handlebar 206 and rear handle 202 can be relative to the arm pivot posts 261 rotate；The arm pivot post 261 is with 206 integrated injection molding of front handlebar and by shaft hole 222, by 206 He of front handlebar Handle 202 is flexibly connected afterwards.The arm pivot post 261 may be set to be independent part for being flexibly connected 206 He of front handlebar Handle 202 afterwards.The lengthening bar portion 22 includes runner 214, outer bar portion 213 and draw-in bar 215, the outer bar portion 213 and runner 214 are fixed together and are mounted in front handlebar 206, and described 215 one end of draw-in bar is connect with the driving mechanism 211 and it is another One end connect with rear handle 202 and is fixed in rear 202 fixation hole 221 of handle by fixing axle 218.

The working head 23 includes a pair of of binding clip 210 and the driving mechanism that is attached thereto, and the driving mechanism includes the One link block 217, the second link block 216, sliding block 212, actuating arm 211 and pin 219.First link block 217, the Two link blocks 216 respectively with the connection symmetrical above and below of a pair of of binding clip 210 and be fitted into actuating arm 211 together with sliding block 212 and use pin 219 is fixed.215 distal end of draw-in bar is connect with sliding block 212, drives the movement of the draw-in bar 215 band movable slider 212 to move, with cunning First link block 217 that block 212 is cooperatively connected, the second link block 216 drive a pair of of binding clip 210 to realize opening and closing.Before described Handle 206 includes preceding finger loop 262, and the rear handle 202 includes thumb circle 224.Operate the front handlebar 206 and rear handle 202 rotate relative to the arm pivot post 261 is converted into the linear motion of draw-in bar 215, and drives driving mechanism 211 Dynamic binding clip 210 is realized closure or is unclamped.The handle 21 also includes latch mechanism 24, and the latch mechanism 24 includes effective model and nothing Effect mode.Under invalid mode, the front handlebar 206 and rear handle 202 can rotate relative to the arm pivot post 261 Realize the opening and closing of working head 23；Under effective model, the front handlebar 206 and rear handle 202 can be relative to the hands Handle shaft 261 rotates, and handle 202 closes up towards front handlebar 206 after permission and handle 202 is away from front handlebar after limiting 206 open, as lock function；When applying outer power drive trigger shaft rotation, handle 202 is opened away from front handlebar after permission, As unlocking function.

Hand-held apparatus 20 configures difference according to the working head 23, can be divided into the operating scissors with scissors head, and band is thin The nipper on tooth friction clamp head, the hoe scaler etc. with curved forceps head.With the development of surgery hand-held apparatus, in order to cooperate different operations Need, it is within the protection scope of the present utility model more and more different types of working heads occur, herein no longer by One enumerates.

Those skilled in the art is to be understood that in laparoscopic surgery, due to the limitation of operative space, operative doctor It is frequently necessary to for a long time with difficult gesture operation instrument, doctor is easy fatigue, or even induces arthritis, the risks such as scapulohumeral periarthritis. Therefore meet ergonomics or the laparoscope hand-held apparatus for mankind's Ergonomy (Ergonomics), can support a variety of grippings Gimmick reduces extreme operation posture and the sense that lessens fatigue, is even more important.It is published about the relevant mankind's function of laparoscopic surgery It is many to imitate the correlative study learned: representational research includes being published in Journal of Healthcare Engineering No. 4 the 587-603 pages of volume 3 of a review of the ergonomic issues in the in 2012 Laparoscopic operating rom details mankind's Ergonomy harm of laparoscopic surgical instruments, other more parts of documents In also refer to the both effectiveness defect of the mankind and its harm of hysteroscope instrument, but do not provide solution.It is published in Journal 2001 of of laparoendoscopic & advanced surgical techniques volume 11 the 1st Technical report, new ergonomic design criteria for handles of laparoscopic Some human efficiency subject's evaluation measures are listed in dissection forceps, however its evaluation measures is confined to based on human body Surveying counts the decreased food size obtained, finger loop size design suggestion, and rough giving and evaluates existing handle The method that difference holds experience, however do not provide design recommendation relevant for functional performance or hint.

Ergonomics is an extremely complex subject, according to international ergonomics association (IEA) definition, Ergonomics be one " anatomy of the research people in certain working environment, physiology and in terms of it is various because Element；Study the interaction of people and machine and environment；Research people is at work, how family life neutralization unified consider when having a holiday Working efficiency, the health of people, safety and it is comfortable the problems such as subject.However up to the present, few in disclosed patented technology It is disclosed about laparoscope hand-held apparatus ergonomic applications case or correlative study.The utility model uses ergonomics Principle is proposed using the test and statistical research of the interdisciplinary studies such as anthropometry, biomethanics, time and work sutdy A kind of laparoscope hand-held apparatus that meeting ergonomics and its design method, application method.

Briefly, surgical instrument 20 is substantially carried out subregion by the utility model as shown in Figure 5: defining arm pivot post 261 224 center position length of thumb circle to rear handle 202 is D, and lengthening bar portion 22 includes first axle 1000, crosses arm pivot post 261 are arranged second axis 2000 with 1000 vertical direction of first axle, and the first axle 1000 and second axis 2000 intersect In intersection point 1001, intersection point 1001 is turned along 1000 proximate direction of first axle and along second axis 2000 by intersection point to handle The square area that length is D is arranged in axis direction, by square area along 1000 liang of equal parts (D/2) of first axle, along the second axis 2000 trisection of line (D/3) is set as the region A1, the region A2, the region A3 and the region B1, the region B2, the region B3.It needs more It further points out, aforementioned " 224 center position length of thumb circle of arm pivot post 261 to rear handle 202 is D ", the specific number of D Value is not definite value, and numerical value changes in a lesser section.Test is carried out based on anthropometry and biomechanical principle to grind Studying carefully and counting acquisition optimal D value section is 60≤D≤70(unit: millimeter).

The hand-type of different crowd and different gripping gimmicks in order to balance in a kind of optional scheme, are arranged in the region A1 Control effective model and when invalid mode switching state the first button 237, setting trigger 205 in the region A2, A3 sets in region Middle finger pressing area is set, while runner 214 is set in the region B1.In another preferred technical solution, first button 237 settings are arranged in the region A1 in the corresponding region A1 of handle 21, the second button 237a along second axis 2000 and described first The position symmetric position A1-1 for the plane that axis 1000 is formed, operating the first button 237 or the second button 237a can control The switching of handle 21 realization effective model and invalid mode.

The working principle of button, trigger and roller position design is described more particularly below.Such as Fig. 6-8, when using finger gripping When enforcing the law, by taking the operation of the right hand of operative doctor as an example, the third finger passes through the preceding finger loop 262, and middle finger is attached to preceding finger loop The region A3 of 262 upside, index finger can flexibly control the region A1, the region A2 or the region B1.The index finger is in the area A1 Mainly play the role of primarily serving along proximate, or the first button of promotion 237 of distal end proximally in the region A2 in domain Pressing control trigger 205 is primarily served in the region B1 and is fiddled with the effect of rotating wheel 214 along 214 direction of rotation of runner.

Further, when being enforced the law using finger gripping, index finger reaches the region B1 and is substantially at straight configuration.In stretching shape The index finger of state does push action or does front and back pushing action along 1000 direction of first axle in the region B1, it has not been convenient to force hair Power, therefore status button should not be set.Index finger comfortably can do rotary dial fortune along 214 direction of rotation of runner in the region B1 It is dynamic.For index finger at the region A1 and the region A2, finger is in bending state, it is possible to comfortably be pressed or be pushed Movement.By the setting of the first button 237 in the region A1, and trigger 205 is arranged in the region A2, and runner 214 is arranged in the region B1, This set make index finger can easily stir with rotating wheel 214, while the first button 237 can easily be pushed to realize effectively The switching of mode and invalid mode, while easily can press or pull trigger 205 and realize cutting for lock state and unlocked state It changes.Those skilled in the art is to be understood that surgical field especially endoscope-assistant surgery field, the index finger of operative doctor Commonly known as index finger, selection of the index finger usually not as output operating force operation handle, index finger is commonly used to control Instrument direction processed or switching state button etc..Aforementioned various states, the switching or operation of function are quite frequent, and in abdomen In endoscope-assistant surgery, since the eyes of operative doctor usually will pay close attention to the monitor in front horizontal direction closely, and have no time to bow Oneself manipulation hand or patient region are observed, therefore the switching manipulation convenience of this various states is extremely important.

As shown in figure 9, when the right hand of operative doctor is enforced the law by finger gripping and switches to palm grip method, surgeon Palm be adjacent to the side of the scissorstype handle 21, thumb pins the pressing from both sides rear handle 202 to side of scissorstype handle 21 Tightly in palm, a U-shaped clamping is formed.At this point, stirring of still can be convenient of its index finger and rotating wheel 214, simultaneously It easily can press or pull the switching that trigger 205 realizes lock state and unlocked state；At this time since the clamping of palm stops, Index finger can not operate the first button 237 of switching state in the region A1, however the thumb of operative doctor is just pressed in A1- at this time 1 region, therefore can easily push the switching of the second button 237a realization effective model and invalid mode.

In the preferred technical solution of the utility model, first button 237 and the second button 237a are relative to along The plane that two axis 2000 and the first axle 1000 are formed it is substantially symmetric, those skilled in the art should be easy to manage Solution, this symmetric relation make doctor with left-hand finger clinch or palm grip method operation instrument 20, use with the right hand The operation of the surgical instrument 20 of the utility model is substantially equivalent, therefore repeats no more.

In conclusion the positional relationship of the first button described in the utility model, the second button, trigger and runner is arranged, The index finger when right hand (left hand) finger gripping is enforced the law can be met simultaneously and be conveniently accomplished runner rotation, effective model and invalid mode are cut It changes, lock state and unlocked state switching.Index finger, which is conveniently accomplished, when can also meet the right hand (left hand) palm grip method simultaneously turns Wheel rotation, lock state and unlocked state switching, thumb complete the switching of effective model and invalid mode.Moreover, this position The setting of relationship, can also meet simultaneously finger gripping enforce the law and finger gripping enforce the law between facilitate switching.Its advantages can be simple Summary description are as follows: can only rely on the touch feedback of operative doctor, convenient and efficient progress finger gripping enforces the law and palm grip method Transformation conveniently operates runner rotation, effective model and invalid mode switching, lock state and unlocked state switching.

Studies have shown that up to the present, there are no patented technologies or document to disclose laparoscope device described in the utility model Tool and its design method, application method.Also without any enterprise, group or personal disclosure, or production, or sale the utility model The laparoscopic instrument.It is disclosed in the prior art, common laparoscopic surgical instruments by its latch mechanism state switching presses Button setting the region B1 (such as U.S. Utility Patent US5626608 disclose structure), it is similar with this patented technology Mass production, and the laparoscopic surgical instruments (such as with laparoscope grasping forceps series of Auto Suture brand sale) used, will Latch mechanism status button is arranged in the region B1, is enforced the law when operating this kind of instrument using finger gripping, effective model and invalid mode The comfort of switching is not good enough, and is inconvenient to support the effective model under palm grip method and invalid mode switching.It is another normal The laparoscopic surgical instruments seen are locked/unlock trigger and are arranged in the region B2 and only comprising lock state and invalid state two State (such as U.S. Utility Patent US6117158 disclose structure), the mass production similar with this patented technology and Use laparoscopic surgical instruments (such as with ENDOPATH brand sale laparoscope grasping forceps series), be locked/unlock by Button is arranged in the region B2, is enforced the law using finger gripping or when palm grip method operates be inconvenient to carry out the correlation of lock function and switches. Another common laparoscopic surgical instruments will lock locking/unlocking trigger and be arranged in the region A3 and press invalidating pattern switching In the region A2, (such as U.S. Utility Patent US8551077, S. Utility application US20060004406 are draped over one's shoulders for button setting The structure of dew), the mass production similar with this patented technology, and the laparoscopic surgical instruments used are (such as with CLICKline The laparoscope grasping forceps series of brand sale), lock locking/unlocking trigger is arranged in the region A3 and presses invalidating pattern switching Button is arranged in the region A2.This design need to usually carry out lock locking/unlocking switching with middle finger operating trigger, be grasped with middle finger or index finger Make button and carry out invalidating pattern switching, operates and switch uncomfortable.It is important to note that being arranged trigger in A3 Region may cause inconvenience.Most common problem mainly includes that, when the instrument is in the lock state, no matter is operative doctor It is that finger gripping is enforced the law or palm grip method, when operation instrument (nipper) clamps organ or tissue and pulls mobile, middle finger is almost It requires easily to touch trigger for assisting force under this state, lead to false triggering, so that instrument is unexpectedly from lock state It is switched to unlocked state, organ or tissue is caused to slip, causes clinical use inconvenient, or even induce malpractice.

As Figure 10-18 depicts the Nomenclature Composition and Structure of Complexes of latch mechanism 24.As shown in figs.10 and 14, the latch mechanism 24 includes Trigger 205, locking bolt 204, the first cantilever 226 being linked together with rear handle 202.First cantilever 226 includes to be connected thereto Flexible lock strap 208.Connecting hole 227 of the setting of first cantilever 226 with opening is for the fixed flexible lock strap 208 of activity.Institute State latch mechanism 24 also comprising button assembly 25 and elastic element 250, the trigger 205, elastic element 250 and button assembly 25 1 It rises and is mounted in the front handlebar 206.The elastic element 250 drives trigger 205 to carry out realization reset after pressing.It is described to pull Machine 205 controls locking bolt 204 and the flexible lock strap 208 realizes locking and unlocking.

As shown in figs. 10-12, the button assembly 25 includes button sliding block 203 and the first button 237 and the second button 237a.The button block 203 includes the slide body 230 with limiting slot 231, and the slide body 230 includes slider side wall 234 (235) and limited block 233.The slider side wall 234(235) and limited block 233 limit limiting slot 231 together.It is described Slider side wall 234(235) extend outward the button mounting post fixed with the first button 237 and the second button 237a cooperation 232, push the first button 237 or the second button 237a to can be used for driving the button sliding block 203 from distally proximally sliding Or proximally slided to distal end, and then the trigger 205 is pushed to rotate, realize the switching of effective model and invalid mode.It is described First button 237 includes the fricting strip 238 with cambered surface, can be convenient finger force.

As shown in figure 13, the trigger 205 includes trigger shaft hole 258 and connect trigger shaft with front handlebar 206 269, the first cam surface 251, the second cam surface 255 and finger buckle 259.The trigger 205 includes the trigger for being substantially in crescent shape Body 254, the setting of the first cam surface 251 is in 254 side of trigger body, and finger buckle 259 is arranged in 254 other side of trigger body. The trigger body 254 is used for elastic elements 250 close to the 251 position providing holes 257 of the first cam surface.The trigger turns Axis hole 258 is arranged between the first cam surface 251 and finger buckle 259 through the trigger body 254.First cam surface 251 Including cam curve section 253 and cam planarea 252.When promoting button component 25 is proximally mobile to distal end, the button The limited block 233 of component 25 contacts match respectively with the cam curve section 253 of the first cam surface 251 and cam planarea 252 It closes, and then the rotation of trigger 205 is pushed to realize that effective model switches to invalid mode.Second cam surface 255 is along the trigger The side of body 254 extends outwardly, second cam surface 255 with the 205 rotation forces locking bolt 204 of trigger with it is described soft Property lock strap 208 realize locking and unlocking.

As shown in figure 14, the flexible lock strap 208 includes one end and connecting hole 227 is connected and fixed fixing end 281 and separately The lock tongue 283 of one end and lock strap body 280 between the two.The setting of lock tongue 283 has wedge shape or ligulate, it may be convenient to It is directed into locked groove 242.Limit rib 282 is arranged in 280 two sides of lock strap body, for 208 guiding role of flexible lock strap.Institute State the first lock tooth 284 that flexible lock strap 208 further includes the 280 front setting of lock strap body.The first lock tooth 284 is along fixing end 281 Several are uniformly arranged to lock tongue 283.Since the flexible lock strap 208 is generally semi-rigid or flexible, so lock strap body 280 can With bending.Flexibility 208 material of lock strap includes the plastic materials such as nylon.Rigid lock is generallyd use in the prior art Band, handle need space rigidity lock strap, this will necessarily tie up the inside of handle, cause the front handlebar or mistake of handle Big or needs protrude part to avoid rigid lock strap, are on the one hand unfavorable in this way in order to adapt to different crowd and be designed not Same handle moulding, still further aspect, front handlebar protrusion part also be easy to cause finger pressing inconvenient.Further, since in order to obtain Good operating handle is obtained, needs to make the movement radian of front and back handle larger, in this case, the lock tooth of the rigidity lock strap holds Easily expose outside handle, is likely to result in operative doctor finger or gloves scratch.And the flexible lock strap 208 can be in handle 21 Bending, can greatly save the space of handle 21.Simultaneously under effective model, due to the first lock of the flexible lock strap 208 Tooth 284 is also flexible, and when being on the one hand the cooperation of the second lock tooth 245, the first lock tooth 284 after plastic deformation with second by locking Tooth 245 is engaged, and can produce good feedback, still further aspect, flexible lock strap in rear handle 202 and 206 closing course of front handlebar Even if 208 lock toothed portions expose outside handle, since the first lock tooth 284 is flexible, operative doctor finger or hand will not be caused Set scratches.

As shown in figures 15-16, the latch mechanism 24 further includes locking bolt 204, and the locking bolt 204 includes with lockhole 242 The lock base body 240.The lock base body 240 includes the two lock side walls 241 and lock bottom 246 of composition lockhole 242, the lock base Body 240 further includes the lock changeover portion 244 that indent is arranged and the hammerlock 243 being obliquely extended outward by lock changeover portion 244.Lock transition Several and the first lock tooth 284 matched second is arranged on the inside of lockhole 242 and locks tooth 245 for section 244.First lock, 284 He of tooth Both second lock teeth 245 tooth makes the hammerlock 243 pass through leverage band towards exactly the opposite by rotating trigger 205 Realize that the first lock tooth 284 matched second locks the occlusion of tooth 245 in second lock 245 direction of rotation of tooth of dynamic 244 inside of lock changeover portion And separation.The latch mechanism 24 uses and the same material of the flexible lock strap 208, or uses other semirigid material systems At.

The front handlebar 206 for installing fixed latch mechanism 24 is depicted as shown in Fig. 5, Fig. 6 and Figure 17-18.The front handlebar 206 It further include front handlebar lid 209 engaged therewith.The front handlebar 206 removes preceding 262 part of finger loop, big with front handlebar lid 209 It causes to be in symmetrical structure.In the substantially region A1-1 and the region A1, the front handlebar lid 209 and front handlebar 206 are symmetrically arranged One sliding slot 297 and second sliding slot 267, the first sliding groove 297 and second sliding slot 267 limit the button sliding block 203 along the chute Direction is moved back and forth.In the present embodiment, the first sliding groove 297 and second sliding slot 267 are long and narrow sliding slot, the skill of this field Art personnel are it should be understood that the first sliding groove 297 and second sliding slot 267 may be set to be arc chute.

In the substantially region A1-1 and the region A1, the front handlebar 206 turns comprising arm pivot post 261 and trigger fixed thereto Axis 279, the arm pivot post 261 and trigger shaft 279 can be set to independent part and the installation of front handlebar 206 is fixed, can also A part is molded into front handlebar 206.The front handlebar lid 209 is set with arm pivot post 261 and 279 corresponding position of trigger shaft Set fixed column 291(299).A kind of optional technical solution, trigger 205 include trigger shaft 279, the trigger shaft 279 with The trigger shaft hole 269 of trigger 205 is arranged to an entirety, and the front handlebar lid 209 turns with the setting of 206 corresponding position of front handlebar Axis hole.In the substantially region B1 and its symmetrical region, the front handlebar 206 also includes the runner mounting groove 265 of remote location.Institute Stating front handlebar 206 further includes matching with rear 202 first cantilever 226 of handle and the second cantilever 270.Second cantilever 270 includes Long and narrow guide groove 272.The front handlebar lid 209 further includes the matched third cantilever of the second cantilever 270 with front handlebar 206 290.The long and narrow guide groove 292 of the long and narrow guide groove 272 and third cantilever 290 of second cantilever 270 limits institute together The limit rib 282 for stating 280 two sides of lock strap body moves flexible lock strap 208 along guide groove direction.The guide groove 272(292) to Distal end extends to be connected to locking bolt mounting groove 274(294).The locking bolt mounting groove 274(294) other end setting can accommodate flexibility The mobile notch 276(296 of lock strap 208).The mounting groove 274(294) fix the locking bolt 204, the slot 276(296) one It rises and guiding role is played to flexible lock strap 208.Due to the guide groove 272(292) limit the limits of 280 two sides of lock strap body Muscle 282, so flexible lock strap 208 is during front handlebar 206 and rear handle 202 close up, the lock strap body 280 can be smoothly It enters in lockhole 242, and realizes the occlusion of the first lock tooth 284 and the second lock tooth 245.The notch 276(296) from The locking bolt mounting groove 274(294) extending outwardly is arranged guide plate 278(298), the guide plate 278(298) and front handlebar 206 and the outer wall 273 (293) of front handlebar lid 209 form guide channel together, the guide channel can prevent flexible lock strap 208 are stretching out notch 276(296) it crimps afterwards, it is bent flexible lock strap 208 and is moved along guide channel direction.Since flexibility is locked Band 208 stretch out notch 276(296) after along guide channel be bent, the outer wall 273 (293) of front handlebar 206 and front handlebar lid 209 Position does not need to outwardly protrude, and avoids influence handle 21 moulded, handle 21 can be designed more compact light.Furthermore Since property lock strap 208 is during handle 21 closes up, it is almost not take up handle inner space, has the handle 21 bigger Radian is moved, 21 operating handle of handle is improved.

As the careful latch mechanism 24 that depicts of Fig. 5 and Figure 19-22 switches between effective model and invalid mode.Work as finger Clinch, for the right hand operation of operative doctor, the third finger passes through the preceding finger loop 262, and middle finger is attached to preceding finger loop The region A3 of 262 upside, index finger can flexibly control the region A1, the region A2 or the region B1.When surgical instrument 20 needs When being rapidly performed by closure and opening operation, typically such as operation on gallbladder carry out blood vessel exfoliation when, at this moment just need by Surgical instrument 20 is switched to invalid mode by effective model.The index finger is in the region A1 by along proximate promoting button group First button 237 of part 25 is mobile, and first button 237 drives button block 203 along the first sliding groove 297 and second sliding slot 267 is mobile.203 limited block 233 of button block interacts with first cam surface 251, and the trigger 205 is driven to enclose It is rotated clockwise around trigger shaft 279, in the process, the second cam surface 255 of the trigger 205 is suitable with the trigger 205 Along rotation counterclockwise, described second locks the rotation of tooth 245 tilts and the flexible lock hammerlock 243 of hour hands rotation forces locking bolt 204 The first lock tooth 284 with 208 separates.When limited block 233 is moved to the cam planarea 252 of first cam surface 251, The trigger 205 forms self-locking with the button block 203, and the elastic element 250 is not capable of resetting.Latch mechanism 24 is by effective at this time Pattern switching is to invalid mode, and it should be appreciated by those skilled in the art under invalid mode, due to the first lock tooth 284 It is in discrete state always with the second lock tooth 245, so the progress that the front handlebar 206 and rear handle 202 of handle 21 can be convenient Close up and open, meets the needs for the tissue removed and sheared when finger gripping is enforced the law.And when operative doctor uses the right hand It is enforced the law by finger gripping and switches palm grip method and carry out pulling organ or tissue energetically and when realizing occlusion, at this moment just needing will operation Instrument 20 is switched to effective model by invalid mode.The palm of surgeon is adjacent to the side of the scissorstype handle 21, Its thumb pins scissorstype handle 21 rear handle 202 is clamped in palm to side, forms a U-shaped clamping.Due to The clamping of palm stops, and index finger is unable to control the first button 237 of switching state in the region A1, and just thumb press exists at this time The region A1-1, it is possible to the second button 237a of convenient promotion is carried out by thumb and distally proximally pushes movement, it is described Second button 237a drives button block 203 to move along the first sliding groove 297 and second sliding slot 267.The button block 203 limits Block 233 and first cam surface 251 interact, and the trigger 205 is driven to rotate counterclockwise around trigger shaft 279, In the process, the trigger 205 does resetting movement under the action of elastic element 250, and second cam surface 255 is with described Trigger 205 rotates counterclockwise, and the hammerlock 243 of the locking bolt 204 rotates clockwise resets, the second lock tooth 245 rotation and First lock tooth 284 of the flexibility lock strap 208 is engaged.At this point, operative doctor can pass through the second lock tooth 245 and the first lock tooth 23 snap-lock of working head is realized in 284 occlusion, avoids clamping the fatigue for firmly causing palm for a long time.The skill of this field Art personnel enforced the law it should be understood that mutually switched between above-mentioned effective model and invalid mode, either using finger gripping or When palm grip method, can freely it operate.

In addition, the operative doctor when lefthanded is completed mutually to switch between above-mentioned effective model and invalid mode When operation, whole operation process is similar, difference mainly the right hand carry out finger gripping enforce the law when, what index finger was stirred be first by Button 237, when using palm grip method, that thumb is stirred is the second button 237a；And left hand carries out finger gripping when enforcing the law, index finger is dialled That dynamic is the second button 237a, and when using palm grip method, what thumb was stirred is the first button 237.Those skilled in the art It should be understood that on the one hand can be made by the way that the first button 237 and the second button 237a is arranged in the region A1 of handle 21 and A1-1 Operative doctor (for example needs to be rapidly performed by the removing or prolonged drawing of closure and opening in different surgical environments Organ operation etc.) it can easily carry out mutually switching between effective model and invalid mode using the same hand, it does not need another An outer hand carries out cooperation or other people carry out cooperation and complete operation；On the other hand it also meets either right-handed or left hand is practised The used operative doctor operated can a hand realize the mutual switching of effective model and invalid mode.

As Fig. 5 and Figure 21-24 it is careful depict latch mechanism 24 under effective model, between lock function and unlocking function Switching.The first button 237 or the second button 237a for first confiring that handle 21 are in proximal location, i.e. surgical instrument 20 is in Under effective model.As shown in figs. 17-18, it when needing to carry out pulling organ energetically for a long time, is held with operative doctor using palm It is sketched for enforcing the law.The palm of surgeon is adjacent to the side of the scissorstype handle 21, and thumb pins scissors Rear handle 202 is clamped in palm side by type handle 21, forms a U-shaped clamping, rear handle 202 is as fixation Handle, little finger of toe press on the support arm 264 of the front handlebar 206, and the third finger passes through the preceding finger loop 262, middle finger It is attached to the upper side position of the preceding finger loop 262, by middle finger, nameless and little finger of toe is exerted oneself together, and driving front handlebar 206 rotates It realizes closing up for handle 21, and then realizes working head 23 and closure clamping.In the process, front handlebar 206 is from distal end to close It is clockwise rotary motion, the guide groove 272(292 in end) from distally moving to the near end, rear handle 202 connects described soft Property lock strap 208 along lockhole 242 proximally to distally moving, the first lock tooth 284 by plastic deformation at the second lock tooth 245 In separating occlusive state by tooth, specifically: often closing up complete first lock, 284 distance of tooth, the second lock tooth 245 is in the first lock Tooth 284 squeezes to be rotated clockwise under driving, and when the first lock tooth 284 is crossed 245 moment of the second lock tooth, first locks tooth 284 and second It locks tooth 245 and distinguishes elastic reset, the first lock tooth 284 and the second lock tooth 245 restore occlusion, therefore in handle 202 and front handlebar 206 During closing up, the first lock tooth 284 and the second lock tooth 245 are separated by tooth and are engaged.When lock tongue 283 enters through lockhole 242 The guide plate 278(298) and the outer wall 273 (293) of front handlebar 206 and front handlebar lid 209 when forming guide channel together, it is soft Property lock strap 208 along the shape of guide channel carry out bending deformation, similar anodontia lock bring excellent operation feel may be implemented.It is soft Property lock strap 208 can be with bending deformation, so the limited space of front handlebar 206 will not be occupied, without at preceding in closing course Corresponding flexible 208 position of lock strap of hand is arranged outer male structure and is avoided.When operative doctor stops exerting oneself, the working head 23 The reaction force that closure clamping generates drives front handlebar 206 and rear handle 202 to have the tendency that separation, at this time due to flexible lock strap 208 are tightened up, and the first lock tooth 284 and the second lock tooth 245 are mutually twisted, and during this, handle 202 is towards preceding after permission Hand 206 closes up and handle is opened away from front handlebar 206 after limiting, at this time the as lock function that is closed of handle 21.Handle 202 afterwards Any position during closing up towards front handlebar 206 needs to realize the lock function of handle 21 according to operation.It is locking Determine under function, operative doctor need to only pull operation instrument, and not have to the application clamping force lasting to hand handle 21, limited slow The fatigue of palm is solved.In addition, the locking bolt 204 can be with self-resetting, so the institute of the hammerlock 243 of locking bolt 204 and trigger 205 Stating the second cam surface 255 can contact or not contact.

As shown in Figure 13 and Figure 23-24, when needing to unlock operation, by operative doctor using for palm grip method into Row summary.The palm of surgeon is adjacent to the side of the scissorstype handle 21, and thumb pins scissorstype handle 21 Rear handle 202 is clamped in palm by side, forms a U-shaped clamping, rear handle 202 is used as fixed handle, and little finger of toe is pressed It is pressed on the support arm 264 of the front handlebar 206, the third finger passes through the preceding finger loop 262, and middle finger is attached to the remote holder Refer to the upper side position of circle 262, finger buckle 259 described in outer power drive is applied by index finger pressing first and is rotated clockwise, institute is driven The second cam surface 255 is stated with the hammerlock 243 of the 205 rotation forces locking bolt 204 of trigger along rotation counterclockwise, so that described second It locks tooth 245 and the first lock tooth 284 disengages, handle 202 is opened away from front handlebar 206 after permission, as unlocking function.It is keeping eating Refer to and presses under 205 state of trigger, the handle 202 and front handlebar 206 can freely be closed up and opening operation.When When index finger unclamps the finger buckle 259, the trigger 205 automatically resets under the action of elastic element 250, second cam Face 255 is separated with the hammerlock 243 of locking bolt 204, and the locking bolt 204 automatically resets, the first lock tooth 284 and the second lock tooth 245 Revert to the state of being mutually twisted.

It should be appreciated by those skilled in the art the utility model is realized using flexible lock strap 208 and locking bolt flexible 204 The unlocking function and lock function of surgical instrument 20, on the one hand during handle 21 closes up, due to the first of flexible lock strap 208 Lock tooth 284 is cooperated by plastic deformation and the second lock tooth 245, and similar anodontia lock bring excellent operation hand may be implemented Sense, while but also with lock bring reliability with teeth；On the other hand, flexible lock strap 208 can be any in closing course Bending deformation make front handlebar 206 can be with more compact light so the limited space of front handlebar 206 will not be occupied.

The many different embodiments and example of the utility model are had shown and described.One of this field is common Technical staff, under the premise of not departing from the scope of the utility model, by it is suitably modified the method and instrument can be made it is suitable Answering property is improved.Several kinds of amendment schemes are referred, and for those skilled in the art, other amendment schemes are also can With what is expected.Therefore the scope of the utility model should according to accessory claim, while be understood not to by specification and The particular content of the structure that attached drawing shows and records, material or behavior is limited.

Claims (9)

1. Include distal end working head 1. a kind of surgical instrument containing flexible latch mechanism, the handle of proximal end scissors-type and prolongs therebetween The lengthening bar portion stretched；The scissorstype handle include front handlebar, rear handle and the arm pivot post for connecting it, and the front handlebar and Handle can rotate relative to the arm pivot post afterwards；The working head includes a pair of of binding clip and the driving being attached thereto Mechanism；The lengthening bar portion includes runner, outer bar portion and draw-in bar, before the outer bar portion and runner are fixed together and are mounted on In handle, described draw-in bar one end is connect with the driving mechanism and its other end is connect with rear handle, which is characterized in that

   1) handle also includes latch mechanism；

   2) latch mechanism includes the first cantilever being linked together with rear handle and connect flexible lock strap with the first cantilever, described Flexible lock strap includes multiple first lock teeth；

   3) latch mechanism also includes trigger and locking bolt, and the trigger includes trigger shaft, the first cam surface, the second cam surface and Finger buckle；The locking bolt includes hammerlock and the second lock tooth to match with the first lock tooth；

   4) latch mechanism also includes button and elastic element, and the trigger, elastic element and button are mounted on the front handlebar In, wherein the button and first cam surface interact, the trigger is driven to rotate around trigger shaft, realizes lock machine Structure switches between effective model and invalid mode；

   5) when the latch mechanism is effective model, the first lock tooth and the second lock tooth are mutually twisted, handle direction after permission Front handlebar closes up and handle is opened away from front handlebar after limiting, as lock function；

   6) applying finger buckle described in outer power drive makes the hammerlock around the rotation of trigger shaft, so that described second locks tooth and the One lock tooth disengages, and handle is opened away from front handlebar after permission, as unlocking function.
2. 2. a kind of surgical instrument containing flexible latch mechanism as described in claim 1, which is characterized in that the flexibility lock strap includes The limit rib of two sides setting, the front handlebar include and the matched guide groove of the limit rib and limit the flexible lock strap along leading It is moved to slot.
3. 3. a kind of surgical instrument containing flexible latch mechanism as described in claim 1, which is characterized in that the flexibility lock strap runs through It is arbitrarily bent after locking bolt along the front handlebar space.
4. 4. a kind of surgical instrument containing flexible latch mechanism as described in claim 1, which is characterized in that the button includes first Button and the second button, first button and the second button are separately mounted to two sides of the front handlebar.
5. 5. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 3, which is characterized in that the front handlebar includes to pass through The long and narrow sliding slot of two side is worn, the first button and the second button can slide in the long and narrow sliding slot.
6. 6. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 4, which is characterized in that the direction base of long and narrow sliding slot Originally it is parallel to the lengthening bar portion.
7. 7. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 4, which is characterized in that long and narrow sliding slot setting is turning The rear side of wheel, and meet following require: left or right hand is enforced the law using finger gripping when operating the handle, the index finger of the hand of operation What be can be convenient stirs one of button；When left or right hand operates the handle using palm grip method, the hand of operation What thumb can be convenient stirs one of button.
8. 8. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 3, which is characterized in that the front handlebar includes to pass through The arc chute of two side is worn, the first button and the second button can rotate in the arc chute.
9. 9. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 7, which is characterized in that arc chute setting is turning The rear side of wheel, and meet following require: left or right hand is enforced the law using finger gripping when operating the handle, the index finger of the hand of operation What be can be convenient stirs one of button；When left or right hand operates the handle using palm grip method, the hand of operation What thumb can be convenient stirs one of button.