CN108403159A - A kind of surgical instrument containing flexible latch mechanism - Google Patents
A kind of surgical instrument containing flexible latch mechanism Download PDFInfo
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- CN108403159A CN108403159A CN201810284402.7A CN201810284402A CN108403159A CN 108403159 A CN108403159 A CN 108403159A CN 201810284402 A CN201810284402 A CN 201810284402A CN 108403159 A CN108403159 A CN 108403159A
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- button
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- latch mechanism
- lock
- trigger
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- 230000007246 mechanism Effects 0.000 title claims abstract description 59
- 210000003811 finger Anatomy 0.000 claims description 116
- 238000000034 method Methods 0.000 claims description 39
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- 210000001015 abdomen Anatomy 0.000 description 3
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- 210000000232 gallbladder Anatomy 0.000 description 3
- 241001014327 Anodontia Species 0.000 description 2
- 208000029836 Inguinal Hernia Diseases 0.000 description 2
- 206010034464 Periarthritis Diseases 0.000 description 2
- 206010002583 anodontia Diseases 0.000 description 2
- 230000005212 anodontia Effects 0.000 description 2
- 238000007486 appendectomy Methods 0.000 description 2
- 206010003246 arthritis Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000023555 blood coagulation Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
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- 238000010911 splenectomy Methods 0.000 description 2
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of surgical instruments containing flexible latch mechanism, including 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 locks 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 interacts with first cam surface, it drives the trigger to be rotated around trigger shaft, realizes that latch mechanism switches between effective model and invalid mode.
Description
Technical field
The present invention relates to Minimally Invasive Surgery instrument more particularly to a kind of laparoscopic surgical instruments containing flexible latch mechanism.
Background technology
Surgical operating instrument has had centuries history, and doctor completes tissue with different surgical instruments in surgical operation
The operations such as crawl is sheared, separation, blood coagulation, and suture is closed, surgical operating instrument develop ripe 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 structure, complete tissue crawl, shearing,
Separation, blood coagulation, the operations such as suture closure.
Laparoscopic surgery opens abdomen ophthalmic surgical relative to tradition, and main advantage is to mitigate slight illness for patient trauma is small
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 operations 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 often needs
Will be for a long time with difficult gesture operation instrument, doctor is easy fatigue, or even induces arthritis, scapulohumeral periarthritis equivalent risk.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 enforces 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, generally use scissorstype handle, can support a variety of gripping gimmicks.In order to which organ or tissue is clamped in lasting realization,
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 a kind of card locking device and surgical instrument 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 problems with urgently to be resolved hurrily:
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 quite similar,
The finger that existing surgical instrument can generally meet most operative doctors can carry out being normally carried out operation in operation, but seldom
It considers how to make the finger of operative doctor comfortably to operate, needless to say meets the need that minority has the operative doctor of particular/special requirement
It asks, such as：It is accustomed to the operative doctor of left slash and matching finger is carried out according to the different firmly custom of each finger of operative doctor
The zone of action；
On the other hand, how operative doctor uses the same hand, easily carries out a variety of differences in continuous surgical procedure
Gimmick switches over, for example finger gripping is enforced the law the switching between palm grip method, or is carried out under different gimmick states
The switching of different conditions facilitates operative doctor that best hand-held posture may be used and carries out various accurate operations, and reduces length
The fatigue of time operation；
In addition, how to need continuously clamping and the operation unclamped for tissue or organ and be not necessarily to what locking mechanism participation carried out
Quickly operation etc. is switched fast between drawing and strip operation.
By increase operation path, use mainly is combined using the surgical instrument of different function for the prior art, or
Using modes such as more people auxiliary：For example the hand-held apparatus of with locking mechanism is used in an operation path, another operation is logical
Common hand-held apparatus is used in road；Or in the same operation path by the surgical instrument of different function into traveling out abdomen
Switching.Nonetheless, also only part can meet the realization requirement of operative doctor, but really increase the pain of patient, increase
Operating time and the various operation risks thus brought.
Invention content
Therefore, in order to solve problems in the prior art, in one aspect of the invention, propose a kind of containing flexible latch mechanism
Surgical instrument, including distal end working head, the handle of proximal end scissors-type and the lengthening bar portion extended therebetween；The scissors-type hand
Handle includes front handlebar, rear handle and the arm pivot post for connecting it, and the front handlebar and rear handle can turn relative to the handle
Axis rotation；The working head includes a pair of of binding clip and the driving mechanism being attached thereto；The lengthening bar portion includes turning
Wheel, outer bar portion and draw-in bar, the outer bar portion and runner be fixed together and be mounted in front handlebar, described draw-in bar one end and
The driving mechanism connects and its other end is connect with rear handle, and the handle also includes latch mechanism；The latch mechanism include with
The first cantilever and flexible lock strap is connect with the first cantilever that handle is linked together afterwards, the flexibility lock strap include multiple first locks
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 hand
Refer to button；The locking bolt includes hammerlock and the second lock tooth to match with the first lock tooth；The latch mechanism also includes button and bullet
Property element, the trigger, elastic element and button are mounted in the front handlebar, wherein the button and first cam surface
Interaction drives the trigger to be rotated around trigger shaft, realizes that latch mechanism switches between effective model and invalid mode；
When the latch mechanism is effective model, the first lock tooth and the second lock tooth are mutually twisted, and handle is towards front handlebar after permission
Close up and handle is opened away from front handlebar after limiting, as lock function；Apply finger buckle described in outer power drive and makes the lock
Upper-arm circumference is rotated around trigger shaft so that the second lock tooth and the first lock tooth disengage, and handle is opened away from front handlebar after permission, i.e.,
For unlocking function.
A kind of optional technical solution, wherein the flexibility lock strap includes the limit rib of both 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 arbitrary 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 in runner is arranged in the long and narrow sliding slot, and meets and want as follows
It asks：Left or right hand using finger gripping enforce the law operate the handle when, the index finger of the hand of operation can easily stir wherein one
A button；When left or right hand operates the handle using palm grip method, the thumb of the hand of operation can easily stir 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 in runner is arranged in the arc chute, and meets and want as follows
It asks：Left or right hand using finger gripping enforce the law operate the handle when, the index finger of the hand of operation can easily stir wherein one
A button；When left or right hand operates the handle using palm grip method, the thumb of the hand of operation can easily stir it
In a button.
Description of the drawings
In order to more fully understand the present invention essence, be described in detail below in conjunction with attached drawing, wherein：
Fig. 1 is a kind of surgical operating instrument simulation schematic diagram of the prior art；
Fig. 2 is enforced the law schematic diagram using finger gripping shown in Fig. 1；
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 present invention；
Fig. 5 is surgical instrument finger control partition schematic diagram described in Fig. 4；
Fig. 6 is that effective model switches schematic diagram to invalid mode when Fig. 4 is enforced the law using right hand progress finger gripping；
Fig. 7 is that invalid mode switches schematic diagram to effective model when Fig. 4 is enforced the law using right hand progress finger gripping；
Fig. 8 is that effective model switches side schematic diagram to invalid mode when Fig. 4 carries out palm grip method using the right hand；
Fig. 9 is that effective model switches other side schematic diagram to invalid mode when Fig. 7 carries out palm grip method using the right hand；
Figure 10 is the exploded view of surgical instrument described in Fig. 4；
Figure 11 is the stereogram 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 stereogram of trigger shown in Figure 10；
Figure 14 is flexible lock strap and locking bolt cooperation schematic diagram described in Figure 10；
Figure 15 is locking bolt stereogram 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 invalid mode of the present invention；
Figure 20 is 20-20 partial enlarged views shown in Figure 19；
Figure 21 is the cut away view of lock-out state under effective model of the present invention；
Figure 22 is 22-22 partial enlarged views shown in Figure 21；
Figure 23 is the cut away view of unlocked state of the present invention；
Figure 24 is 24-24 partial enlarged views shown in Figure 23；
In all views, identical label indicates equivalent part or component.
Specific implementation mode
Disclosed herein is embodiment of the present invention, it should be understood, however, that disclosed embodiment is only of the invention
Example, the present invention can be realized by different modes.Therefore, this disclosure is not to be construed to be restrictive, and
It is the basis only as claim, and how basis of the invention is used as introduction those skilled in the art.
With reference to figure 1-4, for convenience of stating, the side of follow-up all Proximity operation persons is defined as proximal end, and far from operator
One side is defined as distal end.
As shown in Figs. 1-3, in conjunction with described in foregoing background, work as casing especially in endoscope-assistant surgery carrying out surgical operation
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 needs to configure one or more progress also according to operation while operating.Fig. 1 is a kind of typical surgery hand of the prior art
Holder tool 10 includes the working head 106 of 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
120,111 bottom of preceding 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 unlock of 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 operations 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.In order to mitigate operation Chinese medicine growth time with difficult posture
Instrument is operated, existing surgery hand-held apparatus is a degree of to consider Human Engineering Principle, can usually support a variety of hold
Gimmick is held, it is a degree of to reduce extreme operation posture and the sense that lessens fatigue.Finger gripping as shown in Figure 2 enforces the law and such as Fig. 3 institute
The palm grip method shown is most common two kinds of gimmicks.
As Fig. 1 and Fig. 2 illustrate operative doctor using typical surgical hand-held apparatus 10 with finger gripping enforce the law carry out tractor
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
The rear handle 102 is set to be rotated back and forth 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, middle finger to be attached to the upper of the preceding finger loop 110
115 position of unlock trigger of side, movement make the front handlebar 101 be rotated back and forth 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 stripping 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 stripping, 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 fully, or carry out tissue stripping position it is short
When variation spatial extent in time is larger, operative doctor generally use finger gripping 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 quickly open and close instrument to capture, and clamp draws organ or tissue, flexibly
Mobile organ or tissue, so as to matching tissue stripping 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 fully appears or carry out tissue stripping
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 lessen fatigue.
Latch mechanism effective status and the invalid state switching of the surgical instrument 10 of the prior art described in Fig. 1 are inconvenient, 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
Easily cause middle finger keeps handle 11 in the unlocked state by trigger squeeze 115, that is, is easy to cause latch mechanism false triggering unlock.
A kind of surgical instrument 20 containing flexible latch mechanism of the embodiment of the present invention is illustrated in detail in Fig. 4-18, including distal end works
Head 23, proximal end scissorstype handle 21 and the lengthening bar portion 22 extended therebetween；The handle 21 includes front handlebar 206, afterwards handle
Hand 202 and the arm pivot post 261 for connecting it, and the front handlebar 206 and rear handle 202 can be relative to the arm pivot posts 261
It rotates；The arm pivot post 261 is with 206 integrated injection molding of front handlebar and by shaft hole 222, by front handlebar 206 with after
Handle 202 is flexibly connected.The arm pivot post 261 may be set to be independent part for being flexibly connected front handlebar 206 with after
Handle 202.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
It is fixed together and is mounted in front handlebar 206,215 one end of the draw-in bar is connect with the driving mechanism 211 and its is another
End connect with rear handle 202 and is fixed in 202 mounting hole 221 of rear 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 together in actuating arm 211 with sliding block 212 and use pin
219 fix.215 distal end of draw-in bar is connect with sliding block 212, drives the movement band movable slider 212 of the draw-in bar 215 to move, with cunning
First link block 217 that block 212 is 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 driving mechanism 211 is made to drive
Dynamic binding clip 210, which is realized, to be closed or unclamps.The handle 21 also includes latch mechanism 24, and the latch mechanism 24 includes effective model and nothing
Effect pattern.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 deviates 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 coordinate different operations
It needs, more and more different types of working heads occurs and be within the scope of the invention, no longer arrange one by one herein
It lifts.
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, scapulohumeral periarthritis equivalent risk.
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 work(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 detail 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 years 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 be 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 for the relevant design recommendation of functional performance or hint.
Ergonomics is an extremely complex subject, according to international ergonomics association (IEA) definition,
Ergonomics be one " anatomy, physiology and the psychology of research people in certain working environment etc. 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 present invention is former using ergonomics
Reason, the experiment using interdisciplinary studies such as anthropometry, biomethanics, time and work sutdies and statistical research, it is proposed that
A kind of laparoscope hand-held apparatus meeting ergonomics and its design method, application method.
Briefly, surgical instrument 20 is substantially carried out subregion by the present invention as shown in Figure 5：After definition arm pivot post 261 arrives
224 center position length of thumb circle of handle 202 be D, lengthen bar portion 22 include first axle 1000, cross arm pivot post 261 with
Second axis 2000 is arranged in 1000 vertical direction of first axle, and the first axle 1000 and second axis 2000 intersect at intersection point
1001, intersection point 1001 is along 1000 proximate direction of first axle and along second axis 2000 by intersection point to handle rotor shaft direction
The square area that length is D is set, by square area along 1000 liang of deciles (D/2) of first axle, along second axis 2000
Trisection (D/3) is set as the regions A1, the regions A2, the regions A3 and the regions B1, the regions B2, the regions B3.It needs further to refer to
Go out, aforementioned " 224 center position length of thumb circle of arm pivot post 261 to rear handle 202 is D ", the concrete numerical value of D is not fixed
Value, numerical value change in a smaller section.Experimental study and statistics are carried out based on anthropometry and biomechanical principle
It is 60≤D≤70 (unit to obtain optimal D values section：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 regions A1
Control effective model and when invalid mode switching state the first button 237, setting trigger 205 in the regions A2, A3 sets in region
Middle finger pressing area is set, while runner 214 is set in the regions B1.In another preferred technical solution, first button
237 settings are arranged in the regions A1 in the 21 corresponding regions A1 of handle, the second button 237a along second axis 2000 and described first
The positions symmetric position A1-1 for the plane that axis 1000 is formed, operating the first button 237 or the second button 237a can control
Handle 21 realizes the switching of effective model and invalid mode.
The operation 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, middle finger to be attached to preceding finger loop
The regions A3 of 262 upside, index finger can flexibly control the regions A1, the regions A2 or the regions B1.The index finger is in the regions A1
Mainly play the role of along proximate, or the first button of promotion 237 of distal end proximally, the regions A2 primarily serve by
Voltage-controlled trigger processed 205 primarily serves the effect for the rotating wheel 214 that fiddles with along 214 direction of rotation of runner in the regions B1.
Further, when being enforced the law using finger gripping, index finger reaches the regions 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 regions 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 in the regions B1 along 214 direction of rotation of runner
It is dynamic.For index finger at the regions A1 and the regions A2, finger is in flexuosity, it is possible to comfortably be pressed or be pushed and is dynamic
Make.By the setting of the first button 237 in the regions A1, and trigger 205 is arranged in the regions A2, and runner 214 is arranged in the regions B1, this
Kind of setting so that index finger can easily stir with rotating wheel 214, while the first button 237 can easily be pushed to realize effective mould
The switching of formula and invalid mode, while easily can press or pull the switching that trigger 205 realizes lock-out state and unlocked state.
Those skilled in the art is to be understood that surgical field especially endoscope-assistant surgery field, the index finger of operative doctor are logical
Index finger are commonly referred to as, selection of the index finger usually not as output operating force operation handle, index finger is commonly used to control
Instrument direction or switching state button etc..Aforementioned various states, the switching or operation of function are quite frequent, and in abdominal cavity
In videoendoscopic surgery, the monitor in the concern front horizontal direction wanted closely since the eyes of operative doctor are usual, and sight of bowing of having no time
Oneself manipulation hand or patient region are examined, 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, its index finger still can easily stir with rotating wheel 214, simultaneously
It easily can press or pull the switching that trigger 205 realizes lock-out 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 regions 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 currently preferred technical solution, first button, 237 and second button 237a is relative to along the second axis
The plane that line 2000 and the first axle 1000 are formed it is substantially symmetric, those skilled in the art it will be easily understood that this
Kind symmetric relation makes doctor with left-hand finger clinch or palm grip method operation instrument 20, and the present invention is used with the right hand
Surgical instrument 20 operation it is substantially equivalent, therefore repeat no more.
In conclusion the position relationship setting of the first button of the present invention, the second button, trigger and runner, it can be same
When meet index finger when the right hand (left hand) finger gripping is enforced the law be conveniently accomplished runner rotation, effective model and invalid mode switching, lock
Determine state and unlocked state switching.Index finger is conveniently accomplished runner rotation when can also meet the right hand (left hand) palm grip method simultaneously
Turn, lock-out state and unlocked state switching, thumb complete the switching of effective model and invalid mode.Moreover, this position relationship
Setting, can also meet simultaneously finger gripping enforce the law and finger gripping enforce the law between facilitate switching.Advantage can be simply general
What is included is described as：The touch feedback of operative doctor can only be relied on, convenient and efficient progress finger gripping is enforced the law to be converted with palm grip method,
Conveniently operation runner rotation, effective model and invalid mode switching, lock-out state and unlocked state switching.
Studies have shown that up to the present, there are no patented technology or document disclose laparoscopic instrument of the present invention and
Its design method, application method.Also without any enterprise, group or personal disclosure, or production, or sale abdomen of the present invention
Hysteroscope instrument.It is disclosed in the prior art, common laparoscopic surgical instruments by its latch mechanism state switching push button setting exist
The regions B1 (such as structure of U.S. patent Nos US5626608 disclosures), the mass production similar with this patented technology, and make
Laparoscopic surgical instruments (such as with laparoscope grasping forceps series of Auto Suture brands sale), latch mechanism state is pressed
Button setting is enforced the law when operating this kind of instrument using finger gripping in the regions B1, the comfort of effective model and invalid mode switching
It is not good enough, and be inconvenient to support the effective model under palm grip method and invalid mode switching.Another common laparoscope hand
It in the regions B2 and only includes that two states of lock-out state and invalid state are (such as beautiful that art instrument, which is locked/unlocks trigger and is arranged,
The structure that state patent of invention US6117158 is disclosed), the mass production similar with this patented technology and the laparoscopic surgery used
Instrument (such as with ENDOPATH brands sale laparoscope grasping forceps series), be locked/unblock button be arranged in the regions B2, adopt
It is enforced the law with finger gripping or when palm grip method operates be inconvenient to carry out the correlation of lock function and switches.Another common laparoscope
Surgical instrument will lock locking/unlocking trigger setting the regions A3 and by invalidating mode switch button setting the regions A2 (such as
U.S. patent Nos US8551077, the structure that American invention application US20060004406 is disclosed), it is similar with this patented technology
Mass production, and the laparoscopic surgical instruments (such as the laparoscope grasping forceps series sold with CLICKline brands) that use, will
The setting of locking/unlocking trigger is locked in the regions A3 and by invalidating mode switch button to be arranged in the regions A2.This design, usually
Lock locking/unlocking switching need to be carried out with middle finger operating trigger, and invalidating pattern switching is carried out with middle finger or index finger operation button,
It operates and switches uncomfortable.It is important to note that trigger is arranged may cause inconvenience in the regions A3.It is most common to ask
Topic includes mainly, and when the instrument is in the lock state, operative doctor either finger gripping is enforced the law or palm grip method, behaviour
When making instrument (nipper) clamping organ or tissue and pulling mobile, middle finger is almost required for for assisting exerting a force, under this state
Trigger is easily touched, false triggering is caused so that instrument is unexpectedly switched to unlocked state from lock-out state, leads to organ or tissue
It slips, causes Clinical practice 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 fixes flexible lock strap 208 for activity.Institute
It includes button assembly 25 and elastic element 250, the trigger 205, elastic element 250 and button assembly 25 1 to state latch mechanism 24 also
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 realizes locking and unlock with the flexible lock strap 208.
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) is extended outward coordinates fixed button mounting post with the first button 237 and the second button 237a
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 facilitate 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 first cam surface, 251 position providing holes 257.The trigger turns
Axis hole 258 is arranged through the trigger body 254 between the first cam surface 251 and finger buckle 259.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 205 rotation forces locking bolt 204 of the trigger with it is described soft
Property lock strap 208 realize locking and unlock.
As shown in figure 14, the flexible lock strap 208 includes fixing end 281 that one end is connected and fixed with connecting hole 227 and separately
The lock tongue 283 of one end and lock strap body 280 between the two.The setting of the lock tongue 283 is with wedge shape or ligulate, it may be convenient to
It is directed into locked groove 242.Limit rib 282 is arranged in 280 both 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
It is uniformly arranged several 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.The lock of generally use rigidity in the prior art
Band, handle need space rigidity lock strap, this will necessarily tie up the inside of handle, otherwise cause the front handlebar mistake of handle
Big or needs protrude part to avoid rigid lock strap, are on the one hand unfavorable for being designed not to adapt to different crowd in this way
Same handle moulding, still further aspect, it is inconvenient that front handlebar protrusion part also be easy to cause finger pressing.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 good feedback, still further aspect, flexible lock strap can be generated 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
Section 244 is arranged several and the first lock tooth 284 matched second close to 242 inside of lockhole and locks tooth 245.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 245 direction of rotation of lock tooth of dynamic 244 inside of lock changeover portion
And separation.The latch mechanism 24 uses and 208 same material of the flexible lock strap, or uses other semirigid material systems
At.
Such as Fig. 5, the front handlebar 206 of the fixed latch mechanism of installation 24 is depicted shown in Fig. 6 and Figure 17-18.The front handlebar
206 further include the front handlebar lid 209 coordinated with it.The front handlebar 206 removes preceding 262 part of finger loop, with front handlebar lid 209
Substantially it is in symmetrical structure.In the substantially regions A1-1 and the regions A1, the front handlebar lid 209 and front handlebar 206 are symmetrically arranged
The first sliding groove 297 and second sliding slot 267, the first sliding groove 297 and second sliding slot 267 limit the button sliding block 203 along cunning
Slot 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 slots, this field
It is to be understood by the skilled artisans that the first sliding groove 297 and second sliding slot 267 may be set to be arc chute.
In the substantially regions A1-1 and the regions 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 could be provided as independent part and fixed with the installation of front handlebar 206, also may be used
It is molded into a part with 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 regions B1 and its symmetrical region, the front handlebar 206 also includes the runner mounting groove 265 of remote location.It is described
Front handlebar 206 further includes being matched with 202 first cantilever 226 of rear handle and the second cantilever 270.Second cantilever 270 includes narrow
Long guide groove 272.The front handlebar lid 209 further includes the 270 matched third cantilever 290 of the second cantilever with front handlebar 206.
The long and narrow guide groove 292 of the long and narrow guide groove 272 and third cantilever 290 of second cantilever 270 limits the lock together
Limit rib 282 with 280 both sides of body, makes flexible lock strap 208 be moved along guide groove direction.The guide groove 272 (292) is to distally
Extension is connected to locking bolt mounting groove 274 (294).The setting of 274 (294) other end of the locking bolt mounting groove can accommodate flexible lock strap
The notch 276 (296) of 208 movements.The fixed locking bolt 204 of the mounting groove 274 (294), the slot 276 (296) are right together
Flexible lock strap 208 plays guiding role.Since the guide groove 272 (292) limits the limit rib of 280 both sides of lock strap body
282, so flexible lock strap 208 is during front handlebar 206 and rear handle 202 close up, the lock strap body 280 can smoothly into
Enter into lockhole 242, and realizes that the first lock tooth 284 and second locks the occlusion of tooth 245.The notch 276 (296) is from institute
It states locking bolt mounting groove 274 (294) to extend outwardly setting guide plate 278 (298), the guide plate 278 (298) and front handlebar 206
Guide channel is formed together with the outer wall 273 (293) of front handlebar lid 209, and the guide channel can prevent flexible lock strap 208 from existing
It stretches out notch 276 (296) to crimp afterwards, so that flexible lock strap 208 is bent and moved along guide channel direction.Due to flexible lock strap 208
It is bent along guide channel after stretching out notch 276 (296), outer wall 273 (293) position of front handlebar 206 and front handlebar lid 209 is not
It needs to outwardly protrude, avoids influence handle 21 moulded, handle 21 can be designed more compact light.Additionally due to property
Lock strap 208 is almost not take up handle inner space during handle 21 closes up, and the handle 21 is allow to have bigger arc of motion
Degree, improves 21 operating handle of the handle.
As the careful latch mechanisms 24 that depict of Fig. 5 and Figure 19-22 switch 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, middle finger to be attached to preceding finger loop
The regions A3 of 262 upside, index finger can flexibly control the regions A1, the regions A2 or the regions B1.When surgical instrument 20 needs
When being rapidly performed by closure and opening operation, typically such as at this moment just needed hand when operation on gallbladder carries out blood vessel exfoliation
Art instrument 20 is switched to invalid mode by effective model.The index finger is in the regions A1 by along proximate promoting button component 25
The movement of the first button 237, first button 237 drives button block 203 along the first sliding groove 297 and second sliding slot 267
It is mobile.203 limited block 233 of the button block interacts with first cam surface 251, and the trigger 205 is driven to surround
Trigger shaft 279 rotates clockwise, and in the process, the second cam surface 255 of the trigger 205 is with 205 up time of the trigger
The hammerlock 243 of needle rotation forces locking bolt 204 tilts and the flexible lock strap along rotation counterclockwise, the second lock rotation of tooth 245
208 the first lock tooth 284 detaches.When limited block 233 is moved to the cam planarea 252 of first cam surface 251, institute
It states trigger 205 and forms self-locking with the button block 203, the elastic element 250 cannot reset.Latch mechanism 24 is by effective mould at this time
Formula is switched to invalid mode, and it should be appreciated by those skilled in the art under invalid mode, due to the first lock 284 He of tooth
Second lock tooth 245 is in discrete state always, so the front handlebar 206 and rear handle 202 of handle 21 can be closed easily
Hold together and open, meets the needs for the tissue removed and sheared when finger gripping is enforced the law.And when operative doctor using the right hand by
Finger gripping switching palm grip method of enforcing the law is carried out pulling organ or tissue energetically and when realizing occlusion, at this moment just be needed surgical device
Tool 20 is switched to effective model by invalid mode.The palm of surgeon is adjacent to the side of the scissorstype handle 21,
Thumb pins scissorstype handle 21 rear handle 202 is clamped in palm to side, forms a U-shaped clamping.Due to hand
The clamping of the palm stops that index finger is unable to control the first button 237 of switching state in the regions A1, and just thumb press exists at this time
The regions 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 be moved along the first sliding groove 297 and second sliding slot 267.The button block 203 limits
Block 233 interacts with first cam surface 251, and the trigger 205 is driven to be rotated 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 lock tooth by the second lock tooth 245 and first
23 snap-lock of working head is realized in 284 occlusion, avoids that the fatigue for firmly causing palm is clamped for a long time.The skill of this field
Art personnel it should be understood that mutually switched between above-mentioned effective model and invalid mode, either enforced the law 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 by the way that the first button 237 and the second button 237a is arranged in the regions A1 of handle 21 and A1-1, on the one hand can make
Operative doctor (for example needs the stripping for being rapidly performed by closure and opening or prolonged drawing 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 need not be 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 using palm with operative doctor
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 be closed and be clamped.In the process, front handlebar 206 is from distal end to close
Clockwise rotary motion is done at end, and from distally moving proximally to, rear handle 202 connects described soft the guide groove 272 (292)
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 detaching occlusive state by tooth, specifically：Often close 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 second locks tooth 245 and restores occlusion, therefore in handle 202 and front handlebar 206
During closing up, the first lock tooth 284 and second locks tooth 245 and detaches occlusion by tooth.When lock tongue 283 enters through lockhole 242
It is soft when the outer wall 273 (293) of the guide plate 278 (298) and front handlebar 206 and front handlebar lid 209 forms guide channel together
Property lock strap 208 carry out flexural deformation along the shape of guide channel, the excellent operation feel that similar anodontia lock strap is come may be implemented.It is soft
Property lock strap 208 can be with flexural deformation, so 206 limited space of front handlebar will not be occupied, without at preceding in closing course
Hand corresponds to the outer male structure of 208 position of flexible lock strap setting and is avoided.When operative doctor stops exerting oneself, the working head 23
Being closed the reaction force that 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 second is locked tooth 245 and is 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, the lock function that as handle 21 is closed at this time.Handle 202 afterwards
Any position during closing up towards front handlebar 206 needs the lock function that can realize 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 and can not also 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, little finger of toe to press
It is pressed on the support arm 264 of the front handlebar 206, the third finger passes through the preceding finger loop 262, middle finger to be attached to the remote holder
Refer to the upper side position of circle 262, applying finger buckle 259 described in outer power drive by index finger pressing first rotates clockwise, and drives institute
The second cam surface 255 is stated with the hammerlock 243 of 205 rotation forces locking bolt 204 of the trigger along rotation counterclockwise so that described second
It locks tooth 245 and first and locks the disengagement of tooth 284, 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 detached with the hammerlock 243 of locking bolt 204, and the locking bolt 204 automatically resets, and the first lock tooth 284 and second locks tooth 245
Revert to the state of being mutually twisted.
It should be appreciated by those skilled in the art the present invention realizes operation using flexible lock strap 208 and locking bolt flexible 204
The unlocking function and lock function of instrument 20, on the one hand during handle 21 closes up, first due to flexible lock strap 208 locks tooth
284 are coordinated by plastic deformation and the second lock tooth 245, and the excellent operation feel that similar anodontia lock strap is come may be implemented,
The reliability come simultaneously but also with lock strap with teeth；On the other hand, flexible lock strap 208 can be arbitrary curved in closing course
Song deformation, so 206 limited space of front handlebar will not be occupied, makes front handlebar 206 can be with more compact light.
The many different embodiments and example of the present invention are had shown and described.One ordinary skill of this field
Personnel can make adaptive improvement by suitably modified to the method and instrument without departing from the scope of the invention.
Several kinds of amendment schemes are referred, and for those skilled in the art, other amendment schemes are also to be contemplated that.
Therefore the scope of the present invention should be according to accessory claim, while being understood not to be shown and recorded by specification and attached drawing
Structure, the particular content of material or behavior limited.
Claims (9)
1. a kind of surgical instrument containing flexible latch mechanism, including distal end working head, the handle of proximal end scissors-type and prolong 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 locks teeth；
3) latch mechanism also include trigger and locking bolt, the trigger include 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 interacts with first cam surface, the trigger is driven to be rotated 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. 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 both 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. 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 along the front handlebar space after locking bolt.
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. 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, first button and the second button can slide in the long and narrow sliding slot.
6. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 4, which is characterized in that the side of the long and narrow sliding slot
To being basically parallel to the lengthening bar portion.
7. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 4, which is characterized in that the long and narrow sliding slot setting
In the rear side of runner, and meet following require：Left or right hand using finger gripping enforce the law operate the handle when, the hand of operation
Index finger can easily stir one of button；When left or right hand operates the handle using palm grip method, it is operated
The thumb of hand can easily stir one of button.
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, first button and the second button can rotate in the arc chute.
9. a kind of surgical instrument containing flexible latch mechanism as claimed in claim 7, which is characterized in that the arc chute setting
In the rear side of runner, and meet following require：Left or right hand using finger gripping enforce the law operate the handle when, the hand of operation
Index finger can easily stir one of button；When left or right hand operates the handle using palm grip method, it is operated
The thumb of hand can easily stir one of button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284402.7A CN108403159A (en) | 2018-04-02 | 2018-04-02 | A kind of surgical instrument containing flexible latch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284402.7A CN108403159A (en) | 2018-04-02 | 2018-04-02 | A kind of surgical instrument containing flexible latch mechanism |
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| CN108403159A true CN108403159A (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810284402.7A Pending CN108403159A (en) | 2018-04-02 | 2018-04-02 | A kind of surgical instrument containing flexible latch mechanism |
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| CN (1) | CN108403159A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108236485A (en) * | 2018-04-02 | 2018-07-03 | 成都五义医疗科技有限公司 | A kind of surgical instrument for improving latch mechanism |
| CN115137424A (en) * | 2022-06-25 | 2022-10-04 | 苏州朗特斯医疗科技有限公司 | Prevent mistake and touch anastomat based on safeties |
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| US6117158A (en) * | 1999-07-07 | 2000-09-12 | Ethicon Endo-Surgery, Inc. | Ratchet release mechanism for hand held instruments |
| US20080065116A1 (en) * | 2006-09-13 | 2008-03-13 | Woojin Lee | Surgical instrument |
| KR101385942B1 (en) * | 2013-08-20 | 2014-04-16 | 최동열 | Biopsy forceps for endoscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108236485A (en) * | 2018-04-02 | 2018-07-03 | 成都五义医疗科技有限公司 | A kind of surgical instrument for improving latch mechanism |
| CN115137424A (en) * | 2022-06-25 | 2022-10-04 | 苏州朗特斯医疗科技有限公司 | Prevent mistake and touch anastomat based on safeties |
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