CN115137438B - Clamping device and anastomosis clamp for endoscope - Google Patents
Clamping device and anastomosis clamp for endoscope Download PDFInfo
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- CN115137438B CN115137438B CN202210665630.5A CN202210665630A CN115137438B CN 115137438 B CN115137438 B CN 115137438B CN 202210665630 A CN202210665630 A CN 202210665630A CN 115137438 B CN115137438 B CN 115137438B
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- 230000003872 anastomosis Effects 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000000670 limiting effect Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 6
- 210000001847 jaw Anatomy 0.000 description 47
- 210000001519 tissue Anatomy 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
- A61B17/1285—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips for minimally invasive surgery
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Reproductive Health (AREA)
- Vascular Medicine (AREA)
- Clamps And Clips (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of endoscope suturing, and provides a clamping device and an anastomosis clamp for an endoscope, wherein the clamping device comprises a sleeve, a clamp head frame and a pull rod, and a transmission mechanism is used for converting the movement of the pull rod into the rotation of a clamp arm; when the jaw frame is in an operation position, the stop teeth are embedded into tooth grooves at the front end of the tooth groove group; in the backward moving process of the pull rod, when the clamp arm cannot rotate along the closing direction, the clamp head frame overcomes the resistance between the stop teeth and the tooth grooves and moves backward, so that the sleeve is arranged outside the clamp arm to prevent the clamp arm from rotating along the opening direction.
Description
Technical Field
The invention relates to the technical field of endoscopic stitching, and provides a clamping device, and in addition, relates to an anastomosis clamp for an endoscope, which comprises the clamping device.
Background
The endoscope anastomosis clamp is widely applied to endoscopic minimally invasive surgery and mainly comprises a handle assembly, a clamp arm assembly and a locking structure for locking the clamp arm assembly in a closed state, wherein the handle assembly can control the clamp arm assembly to be closed or opened; the existing endoscope anastomosis clamp generally adopts ratchet unidirectional locking clamp arms or elastic sheets to abut against the clamp arms and other locking structures to lock the clamp arms in a closed state, however, the size of a clamp arm assembly is very small, the size of the locking structure is limited, the reliability of the locking structure is poor, failure is easy to occur, and once the locking structure fails, the clamp arms in the closed state are loosened, so that medical accidents are caused, and the safety hidden trouble is large.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problem that the locking structure of the clamping device is easy to fail in the prior art, a clamping device is provided, and an anastomosis clamp for an endoscope, which comprises the clamping device, is also provided.
The technical scheme adopted for solving the technical problems is as follows: a clamping device comprising:
a sleeve;
the back end of the jaw frame is slidably arranged in the sleeve, two clamping arms are hinged at the front end of the jaw frame, one of the jaw frame and the sleeve is fixedly provided with a stop tooth, the other one of the jaw frame and the sleeve is provided with a tooth groove group, the tooth groove group is provided with at least one tooth groove for the insertion of the stop tooth in the sliding direction of the jaw frame, and when the stop tooth is embedded in the tooth groove, the stop tooth is suitable for being propped against the inner wall of the front side of the tooth groove and can not move forwards, but the stop tooth is allowed to move backwards against the resistance;
the pull rod is connected with the clamping arm through a transmission mechanism, and the transmission mechanism is used for converting the movement of the pull rod into the rotation of the clamping arm;
when the clamp head frame is in the operation position, the stop teeth are embedded into the tooth grooves, and at least one part of the clamping arms are positioned outside the sleeve, so that the clamping arms are allowed to rotate in the opening direction when the pull rod moves forwards or in the clamping direction when the pull rod moves backwards;
after the pull rod moves backwards until the clamp arm finishes closing and clamping human tissues, the clamp head frame overcomes the resistance between the stop teeth and the tooth grooves and moves backwards, so that the sleeve is sleeved outside the clamp arm to prevent the clamp arm from rotating along the opening direction.
In the scheme, the jaw frame is connected with the sleeve by utilizing the cooperation of the stop teeth and the tooth grooves, so that the jaw frame can only move backwards to enter the sleeve, and the clamping arms are maintained in a closed state by the interference caused by the opening of the sleeve to the clamping arms.
Further, a limiting piece capable of elastically deforming is arranged in the sleeve, and when the clamp head frame is in an operation position, the rear end part of the clamp head frame is supported by the limiting piece; by means of the arrangement of the limiting piece, a certain resistance can be caused to the backward movement of the clamp head frame, and the clamp head frame cannot move forwards, so that the clamp head frame can be positioned temporarily, the movement quantity of the pull rod can be accurately converted into the rotation quantity of the clamp arm, the control performance is improved, the clamp head frame is prevented from easily entering the sleeve backwards, and misoperation is reduced; in addition, the limiting piece can also prop against the jaw frame, so that a gap between the stop teeth and the tooth grooves is eliminated, the movement quantity of the pull rod can be almost converted into the rotation quantity of the clamp arm in a percentage conversion way, the clamp arm opening and closing control by an operator is facilitated, and the success rate of the operation is increased.
In order to facilitate manufacturing and simplify assembly, further, a window is formed in the peripheral wall of the sleeve, a part of the peripheral wall of the sleeve, where the window is located, is bent inwards to form a limiting piece capable of elastically deforming, and one end of the limiting piece is connected with the inner wall of the front side of the window.
In order to prevent the jaw frame from rotating in the backward moving process, the dislocation of the stop teeth and the tooth grooves occurs, further, the rear end of the jaw frame is provided with a sliding protrusion, the sleeve is provided with a sliding groove matched with the sliding protrusion, and the sliding protrusion is slidably arranged in the sliding groove along the front-back direction.
Further, the rear side surface of the stop tooth is an inclined surface which is inclined inwards from front to back.
In order to realize that the sleeve, the clamping arm and the clamp head frame are released as a whole module, the clamp head clamp further comprises a clamping piece, a rotary sleeve is inserted into the rear end of the sleeve, an inner hole penetrates through the peripheral wall of the rotary sleeve, an outer hole is formed in the periphery of the sleeve, and the front end face of the rotary sleeve is used for being abutted by the clamp head frame;
the elastic piece is arranged on the clamping piece in a forward extending mode, the elastic clamping part is outwards bent at the front end of the elastic piece, the clamping part outwards penetrates through the inner hole and the outer hole in sequence, so that the rotating sleeve is axially positioned on the sleeve, the pull rod penetrates through the clamping piece, the pull rod is provided with a step surface used for being abutted with the front side end face of the clamping piece, and the step surface is positioned on the front side of the clamping piece;
the pull rod is detachably connected with the transmission mechanism through the detachable structure, and is detached from the transmission mechanism when the pull force applied to the detachable mechanism exceeds a preset value when the pull rod moves backwards.
Once the pull rod is separated from the transmission mechanism, the pull rod moves backwards independently, and when the step surface is abutted with the front side end surface of the clamping piece, the pull rod drives the clamping piece to move backwards together, and the elastic piece can elastically deform until the clamping part is separated from the inner hole and the outer hole, so that the sleeve is released.
Further, each pull rod is in transmission connection with one clamping arm through a transmission mechanism, the two clamping arms are hinged to the jaw frame through a pivot shaft, the front side part of the pivot shaft on the clamping arm is the front end of the clamping arm, and the rear side part of the pivot shaft on the clamping arm is the rear end of the clamping arm;
the transmission mechanism comprises a front shaft, a connecting rod and a rear shaft, wherein the front end of the connecting rod is hinged with the front end of the clamping arm through the front shaft, the rear end of the connecting rod is hinged with the front end of the pull rod through the rear shaft, and the rear shaft is in sliding connection with the clamp head frame along the front-rear direction.
Further, a middle rod is fixed on the clamping piece, and the front end of the middle rod is suitable for being clamped by the front ends of the two clamping arms.
In order to enable the intermediate rod to be pulled out from the space between the two clamping arms, the outer circumferential surface of the intermediate rod, which is positioned between the front ends of the two clamping arms, is a circumferential surface.
Further, the detachable structure comprises a notch arranged at the front end part of the pull rod, a connecting hole matched with the rear shaft is formed in the front end of the pull rod, the rear shaft is inserted into the connecting hole, the notch is communicated with the connecting hole, and the maximum width of the notch is smaller than the diameter of the rear shaft.
The invention also provides an anastomotic clip for an endoscope, which comprises the clamping device.
The beneficial effects of the invention are as follows: the clamping device of the invention utilizes the cooperation of the stop teeth and the tooth grooves to connect the jaw frame with the sleeve, so that the jaw frame can only move backwards to enter the sleeve, thereby maintaining the clamping arm in a closed state by the interference caused by the opening of the sleeve to the clamping arm.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a three-dimensional schematic view of one side of the clamping device of the present invention;
FIG. 2 is a schematic three-dimensional view of the other side of the clamping device of the present invention;
FIG. 3 is a schematic front view of the clamping device of the present invention;
FIG. 4 is a schematic cross-sectional view of A-A of FIG. 3;
FIG. 5 is an enlarged partial schematic view of B in FIG. 4;
FIG. 6 is a schematic view in section C-C of FIG. 4;
FIG. 7 is a schematic view of a tie rod connecting a clamp arm through a transmission mechanism;
FIG. 8 is a schematic view of the connection of the tie rod to the rear axle in the clamping device of the present invention;
FIG. 9 is a three-dimensional schematic view of a sleeve in the clamping device of the present invention;
FIG. 10 is a three-dimensional schematic view of a jaw housing in a clamping device of the present invention;
FIG. 11 is a schematic view of the attachment handle assembly of the clamping device of the present invention;
FIG. 12 is a schematic view of the binding clip frame in an operative position with the clip arms open in a sleeve cut-away condition;
FIG. 13 is a schematic view of the sleeve in section with the binding clip frame in an operative position and the clip arms closed;
FIG. 14 is a schematic view of the binding clip frame in an operative position with the clip arms closed;
FIG. 15 is a schematic view of the clip head frame moved rearwardly into the interior of the sleeve;
FIG. 16 is a schematic view of the sleeve in section with the bit holder moved back into the interior of the sleeve;
fig. 17 is a schematic view of the sleeve when released.
In the figure: 1. the device comprises a sleeve, 101, tooth grooves, 102, windows, 103, limiting pieces, 104, sliding grooves, 105 and an outer hole;
2. the clamp head frame comprises a clamp head frame body 201, stop teeth 201a, inclined surfaces 202, sliding bulges 203, a bracket 204 and a travel groove;
3. a clamp arm;
4. the pull rod, 401, step surface, 402, connecting hole, 403 and notch;
5. the clamping piece 501, the elastic sheet 502 and the clamping part;
6. a rotary sleeve 601 and an inner hole;
7. pivot axle 8, front axle, 9, connecting rod, 10, rear axle, 11, intermediate lever, 12, spring tube, 13, handle, 14, sliding ring.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only those features which are relevant to the invention, and orientation and reference (e.g., up, down, left, right, etc.) may be used solely to aid in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-3, a clamping device comprising:
a sleeve 1;
the jaw frame 2, the rear end of the jaw frame 2 is slidably mounted in the sleeve 1, two clamping arms 3 are hinged at the front end, one of the jaw frame 2 and the sleeve 1 is fixedly provided with a stop tooth 201, the other is provided with a tooth groove group, at least one tooth groove 101 for embedding the stop tooth 201 is arranged on the tooth groove group in the sliding direction of the jaw frame 2, when the stop tooth 201 is embedded in the tooth groove 101, the stop tooth 201 moves forwards to prop against the inner wall of the front side of the tooth groove 101 and cannot be separated from the tooth groove 101, but the stop tooth 201 is allowed to move backwards to be separated from the tooth groove 101 after overcoming a certain resistance;
in this embodiment, the stop teeth 201 are fixed or integrally formed on the clip head frame 2, and the tooth slots 101 are configured on the sleeve 1, so that when the stop teeth 201 are positioned in the tooth slots 101, the clip head frame 2 cannot move forward under the blocking of the tooth slots 101; the jaw frame 2 and the sleeve 1 can be made of metal or metal alloy;
the pull rod 4 is connected with the clamping arm 3 through a transmission mechanism, and the transmission mechanism is used for converting the movement of the pull rod 4 into the rotation of the clamping arm 3;
when the jaw frame 2 is in the operation position, the stop teeth 201 are embedded in tooth grooves 101 at the front end of the tooth groove group, and at least one part of the clamping arm 3 is positioned outside the sleeve 1, so that the clamping arm 3 is allowed to rotate in the opening direction when the pull rod 4 moves forwards, and the clamping arm 3 is also allowed to rotate in the clamping direction when the pull rod 4 moves backwards;
the pull rod 4 drives the jaw frame 2 to move into the sleeve 1: in the backward moving process of the pull rod 4, the clamping arm 3 is gradually closed (i.e. the clamping arm 3 pulled by the moving pull rod 4 moves towards the other clamping arm 3 which is not pulled by moving) until the human tissue is clamped, once the human tissue is clamped, the clamping arm 3 cannot continue to rotate along the closing direction, and as the pulling force applied to the pull rod 4 for making the backward moving pull rod 4 increase, the clip head frame 2 can overcome the resistance between the stop tooth 201 and the tooth socket 101 to move backward, so that the sleeve 1 is sleeved outside the clamping arm 3 to prevent the clamping arm 3 from rotating along the opening direction;
it should be noted that, in this embodiment, the rotation of the arm 3 in the closing direction and the rotation in the opening direction are defined as follows: the hinge point between the clamp arm 3 and the clamp head frame 2 is a first hinge point, the part, located at the front side of the first hinge point, of the clamp arm 3 is the front end of the clamp arm 3, the part, located at the rear side of the first hinge point, of the clamp arm 3 is the rear end of the clamp arm 3, rotation of any one clamp arm 3 along the closing direction can be represented as gradually decreasing the distance between the front ends of the two clamp arms 3, and rotation of any one clamp arm 3 along the opening direction can be represented as gradually increasing the distance between the front ends of the two clamp arms 3.
As shown in fig. 12, a limiting piece 103 which can be elastically deformed is arranged in the sleeve 1, and when the jaw frame 2 is at the operation position, the rear end part of the jaw frame 2 is supported by the limiting piece 103; by means of the limiting piece 103, a certain resistance can be caused to the backward movement of the clamp head frame 2, and the clamp head frame 2 cannot move forwards, so that the clamp head frame 2 can be temporarily positioned, the movement amount of the pull rod 4 can be accurately converted into the rotation amount of the clamp arm 3, the clamp head frame 2 is ensured not to move when being in an operation position, the problem that the clamp arm 3 drives the clamp head frame 2 to move when not clamping human tissues is avoided, the control performance is improved, the clamp head frame 2 is prevented from easily entering the sleeve 1 backwards, and misoperation is reduced; in addition, the limiting piece 103 can also prop against the jaw frame 2, so that a gap between the stop teeth 201 and the tooth grooves 101 is eliminated, the movement amount of the pull rod 4 can be almost converted into the rotation amount of the clamp arm 3 in a percentage conversion manner, the operator can control the opening and closing of the clamp arm 3, and the success rate of the operation is increased.
As shown in fig. 6 and 9, a window 102 is formed on the outer peripheral wall of the sleeve 1, a part of the outer peripheral wall of the sleeve 1 located in the window 102 is bent inwards to form a limiting piece 103 capable of elastically deforming, and one end of the limiting piece 103 is connected with the inner wall of the front side of the window 102, so that the manufacturing and assembly processes are facilitated.
As shown in fig. 10, in consideration of the compactness of the lifting structure, the strength of the lifting sleeve 1, and the ease of manufacturing, the sleeve 1 is preferably designed such that the inner circumferential surface is a circumferential surface, and the rear end of the outer circumferential surface of the jaw frame 2 also has a section of circumferential surface, in which case, the portion of the outer circumferential surface of the jaw frame 2 where the circumferential surface is located is in sliding engagement with the inner circumferential surface of the sleeve 1, but this structure has a problem in that: in order to solve the problem that the stop teeth 201 and the tooth grooves 101 are misplaced due to the fact that the jaw frame 2 is easy to rotate in the backward moving process, the rear end of the jaw frame 2 is provided with a sliding protrusion 202, the sleeve 1 is provided with a sliding groove 104 matched with the sliding protrusion 202, and the sliding protrusion 202 is slidably arranged in the sliding groove 104 along the front-back direction; thereby restraining the jaw frame 2 so as to have only a degree of freedom of movement in the front-rear direction; it is noted that a profile connection may also be used between the sleeve 1 and the head frame 2. In this embodiment, a plurality of tooth slots 101 are distributed at intervals in the sliding direction of the jaw frame 2, and a sliding slot 104 is provided on the other side of the opposite tooth slot 101, so that when the jaw frame 2 slides in the axial direction relative to the sleeve 1, the side of the sliding slot 104 limits the jaw frame 2, so that the jaw frame 2 cannot deviate in a dislocation manner during the sliding in the axial direction, and the subsequent release failure occurs.
As shown in fig. 5, the rear side of the stop tooth 201 is an inclined surface 201a, the inclined surface 201a is inclined inwards from front to back, and the front side of the stop tooth 201 is preferably perpendicular to the axis of the sleeve 1 and parallel to the front inner wall of the tooth slot 101; therefore, in the backward moving process of the jaw frame 2, the force component generated by the inclined surface 201a can force the jaw frame 2 to elastically deform inwards, so that the stop teeth 201 can move to the next tooth slot 101 beyond the current tooth slot 101; in this embodiment, the jaw frame 2 has two brackets 203, and the stop tooth 201 is located on one of the brackets 203, which is equivalent to a cantilever beam structure, so that when the jaw frame 2 moves backward, the stop tooth 201 passes over the current tooth slot 101; the sliding protrusion 202 may be disposed on the other bracket 203, so that the sliding protrusion 202 and the stop tooth 201 are designed to have the same structure and to be symmetrical to each other, thereby facilitating the manufacture and assembly.
As shown in fig. 6, the clamp further comprises a clamping piece 5, a rotary sleeve 6 is inserted into the rear end of the sleeve 1, an inner hole 601 is formed in the peripheral wall of the rotary sleeve 6, an outer hole 105 is formed in the periphery of the sleeve 1, and the front end face of the rotary sleeve 6 is used for being abutted by the clamp head frame 2;
the elastic piece 501 extends forwards on the clamping piece 5, the elastic clamping part 502 with elasticity is outwards bent at the front end of the elastic piece 501, the clamping part 502 outwards sequentially penetrates through the inner hole 601 and the outer hole 105, so that the rotary sleeve 6 is axially positioned on the sleeve 1, the pull rod 4 penetrates through the clamping piece 5, the pull rod 4 is provided with the step surface 401 for being abutted with the front side end surface of the clamping piece 5, and the step surface 401 is positioned on the front side of the clamping piece 5;
the pull rod 4 is detachably connected with the transmission mechanism through a detachable structure, and when the pull force applied to the detachable structure exceeds a preset value as the pull rod 4 moves backwards, the pull rod 4 is detached from the transmission mechanism; once the pull rod 4 is separated from the transmission mechanism, the pull rod 4 moves backwards independently, and when the step surface 401 abuts against the front end surface of the clamping piece 5, the pull rod 4 drives the clamping piece 5 to move backwards together, and the elastic piece 501 is elastically deformed until the clamping part 502 is separated from the inner hole 601 and the outer hole 105 at the same time, so that the sleeve 1 is released.
As shown in fig. 4 and 7, each pull rod 4 is in transmission connection with one clamping arm 3 through a transmission mechanism, two clamping arms 3 are hinged on the jaw frame 2 through a pivot shaft 7, the front part of the clamping arm 3, which is positioned on the pivot shaft 7, is the front end of the clamping arm 3, and the rear part of the clamping arm 3, which is positioned on the pivot shaft 7, is the rear end of the clamping arm 3; in the embodiment, the axis of the pivot shaft 7 is arranged along the radial direction of the sleeve 1, and two ends of the pivot shaft 7 are respectively inserted into two brackets 203 of the clamp head frame 2, so that the installation stability is improved;
the transmission mechanism comprises a front shaft 8, a connecting rod 9 and a rear shaft 10, the front end of the connecting rod 9 is hinged with the front end of the clamping arm 3 through the front shaft 8, the rear end of the connecting rod 9 is hinged with the front end of the pull rod 4 through the rear shaft 10, and the rear shaft 10 is in sliding connection with the clamp head frame 2 along the front-rear direction; in this way, the pull rod 4 drives the connecting rod 9 to move backwards through the rear shaft 10, and the connecting rod 9 pulls the clamping arm 3 to rotate around the pivot shaft 7 so as to realize opening or closing; in this embodiment, two sides of the jaw frame 2 or two brackets 203 on the jaw frame 2 are respectively and independently provided with a travel groove 204 for the rear axle 10 to move back and forth, the rear axles 10 of the two transmission mechanisms are respectively inserted into the travel grooves 204 of the side brackets 203, the rear axle 10 is slidably connected with the travel groove 204, and the travel grooves 204 can limit the connecting rod 9, so that the arm lock 3 rotates within the design range.
The clamping piece 5 is fixedly provided with a middle rod 11, and the middle rod 11 extends to a position between the front ends of the two clamping arms 3; thereby clamping two human tissues together; preferably, the outer circumferential surface of the intermediate lever 11 at a position between the front ends of the two clip arms 3 is a circumferential surface so as to facilitate extraction of the intermediate lever 11 from between the two clip arms 3.
As an example provided in this embodiment, specifically, as shown in fig. 8, the detachable structure includes a notch 403 provided at the front end of the pull rod 4, the front end of the pull rod 4 is provided with a connection hole 402 matching with the rear axle 10, the rear axle 10 is inserted into the connection hole 402, the notch 403 communicates with the connection hole 402, and the maximum width of the notch 403 is smaller than the diameter of the rear axle 10.
As shown in fig. 11, the connecting rod 9 in this embodiment can be used with a handle assembly, a spring tube 12 is disposed between the handle assembly and the rotating sleeve 6 on the sleeve 1, an operation wire is disposed in the spring tube 12, two pull rods 4 are respectively and fixedly connected with one operation wire, the handle assembly has a handle 13 and two sliding rings 14 slidably mounted on the handle 13, the two operation wires are respectively fixed on the two sliding rings 14, thus when the sliding rings 14 are moved back and forth, the operation wire can drive the connecting rod 9 to move back and forth, and medical staff can operate by using the sliding rings 14, and the specific working principle is as follows:
as shown in fig. 12-14, the jaw frame 2 is in an operation position, the stop teeth 201 are embedded in the tooth grooves 101 at the front end of the tooth groove group, the limit piece 103 holds the rear end of the jaw frame 2, the clamping arms 3 can be opened along with the forward movement of the pull rod 4 so as to be convenient for clamping human tissues again, and when the pull rod 4 moves backwards, the clamping arms 3 are closed so as to clamp the human tissues;
15-16, after the two clamping arms 3 clamp human tissue, as the pulling force applied to the pull rod 4 is increased, when the force transmitted to the jaw frame 2 by the pull rod 4 overcomes the resistance of the jaw frame 2 to move backwards, the jaw frame 2 moves backwards along with the pull rod 4, the limiting piece 103 is pressed by the jaw frame 2 to deform outwards, and then the clamping arms 3 in a closed state on the jaw frame 2 enter the sleeve 1, so that the clamping arms 3 are restrained by the sleeve 1, and the clamping arms 3 are maintained in a closed state;
normally, as shown in fig. 16, when the clip head frame 2 moves backward until contacting with the front end of the rotating sleeve 6, the stop teeth 201 are embedded in the corresponding tooth grooves 101, the clip head frame 2 cannot move backward under the blocking of the rotating sleeve 6, the pulling force applied on the pull rod 4 is increased again, as shown in fig. 17, the notch 403 at the front end of the pull rod 4 is deformed, the rear shaft 10 is separated from the pull rod 4 from the notch 403, then the pull rod 4 moves backward independently, and when the step surface 401 abuts against the front end surface of the clamping piece 5, the pull rod 4 drives the clamping piece 5 to move backward together, the elastic piece 501 is elastically deformed until the clamping part 502 is separated from the inner hole 601 and the outer hole 105, thereby separating the sleeve 1 from the rotating sleeve 6, completing the release of the sleeve 1, and the middle rod 11 moves backward along with the clamping piece 5 to realize the extraction from between the two clamping arms 3.
In special cases, if the human tissue clamped by the clamp arms 3 is very large, when the clamp arms 3 enter the sleeve 1 backwards, after the two clamp arms 3 enter the sleeve 1 backwards for a certain distance, the stop teeth 201 are embedded into the corresponding tooth grooves 101, the edge of the front opening of the sleeve 1 is easy to be clamped with the two clamp arms 3, the clamp head 2 cannot continue to move backwards, the pulling force applied on the pull rod 4 is increased again, the notch 403 at the front end of the pull rod 4 is deformed, the rear shaft 10 is separated from the pull rod 4 from the notch 403, then the pull rod 4 moves backwards independently, and when the step surface 401 abuts against the front end surface of the clamping piece 5, the pull rod 4 drives the clamping piece 5 to move backwards together, the elastic piece 501 is elastically deformed until the clamping part 502 is separated from the inner hole 601 and the outer hole 105, so that the sleeve 1 is separated from the rotating sleeve 6, the release of the sleeve 1 is completed, and the middle rod 11 moves backwards along with the clamping piece 5, so that the pull rod 3 is pulled out from between the two clamp arms 3.
Example 2
An anastomosis clip for an endoscope, comprising the clipping device of embodiment 1 above.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. A clamping device, characterized in that: comprising the following steps:
a sleeve (1);
the clamp head frame (2), the rear end of the clamp head frame (2) is slidably arranged in the sleeve (1), two clamping arms (3) are hinged at the front end, one of the clamp head frame (2) and the sleeve (1) is fixedly provided with a stop tooth (201), the other clamp head frame is provided with a tooth groove group, the tooth groove group is provided with at least one tooth groove (101) for embedding the stop tooth (201) in the sliding direction of the clamp head frame (2), the tooth groove (101) is provided with a plurality of tooth grooves (101), and when the stop tooth (201) is embedded in the tooth groove (101), the stop tooth (201) is suitable for being propped against the inner wall of the front side of the tooth groove (101) and cannot move forwards, but the stop tooth (201) is allowed to move backwards against the resistance;
the pull rod (4) is connected with the clamping arm (3) through a transmission mechanism, and the transmission mechanism is used for converting the movement of the pull rod (4) into the rotation of the clamping arm (3);
when the clamp head frame (2) is in the operation position, the stop teeth (201) are embedded into the tooth grooves (101), and at least one part of the clamp arm (3) is positioned outside the sleeve (1) so as to allow the clamp arm (3) to rotate in the opening direction when the pull rod (4) moves forwards or rotate in the clamping direction when the pull rod (4) moves backwards;
after the pull rod (4) moves backwards until the clamp arm (3) finishes closing and clamping human tissues, the clamp head frame (2) overcomes the resistance between the stop teeth (201) and the tooth grooves (101) and moves backwards, so that the sleeve (1) is sleeved outside the clamp arm (3) to prevent the clamp arm (3) from rotating along the opening direction;
a deformable limiting piece (103) is arranged in the sleeve (1), and when the clamp head frame (2) is in an operation position, the limiting piece (103) supports the rear end part of the clamp head frame (2), so that a gap between the stop tooth (201) and the tooth slot (101) is eliminated;
the outer peripheral wall of the sleeve (1) is provided with a window (102), a part of the outer peripheral wall of the sleeve (1) located at the window (102) is inwards bent to form a limiting piece (103) capable of elastically deforming, and one end of the limiting piece (103) is connected with the inner wall of the front side of the window (102).
2. The clamping device as claimed in claim 1, characterized in that: the rear end of the clamp head frame (2) is provided with a sliding protrusion (202), the sleeve (1) is provided with a sliding groove (104) matched with the sliding protrusion (202), and the sliding protrusion (202) is slidably arranged in the sliding groove (104) along the front-back direction.
3. The clamping device as claimed in claim 1, characterized in that: the rear side surface of the stop tooth (201) is an inclined surface (201 a), and the inclined surface (201 a) is inclined inwards from front to back.
4. The clamping device as claimed in claim 1, characterized in that: the clamp comprises a clamp body and is characterized by further comprising a clamping piece (5), wherein a rotary sleeve (6) is inserted into the rear end of the sleeve (1), an inner hole (601) is formed in the peripheral wall of the rotary sleeve (6), an outer hole (105) is formed in the periphery of the sleeve (1), and the front end face of the rotary sleeve (6) is used for being abutted by the clamp head frame (2);
the elastic piece (501) extends forwards on the clamping piece (5), the front end of the elastic piece (501) is bent outwards to form an elastic clamping part (502), the clamping part (502) sequentially penetrates through the inner hole (601) and the outer hole (105) outwards, so that the rotary sleeve (6) is axially positioned on the sleeve (1), the pull rod (4) penetrates through the clamping piece (5), the pull rod (4) is provided with a step surface (401) for being abutted with the front side end surface of the clamping piece (5), and the step surface (401) is positioned on the front side of the clamping piece (5);
the pull rod (4) is detachably connected with the transmission mechanism through a detachable structure, and the pull rod (4) is detached from the transmission mechanism when the pull force applied to the detachable mechanism exceeds a preset value when the pull rod (4) moves backwards.
5. The clamping device as claimed in claim 4, characterized in that: each pull rod (4) is in transmission connection with one clamping arm (3) through a transmission mechanism, the two clamping arms (3) are hinged on the jaw frame (2) through a pivot shaft (7), the front side part of the pivot shaft (7) on the clamping arm (3) is the front end of the clamping arm (3), and the rear side part of the pivot shaft (7) on the clamping arm (3) is the rear end of the clamping arm (3);
the transmission mechanism comprises a front shaft (8), a connecting rod (9) and a rear shaft (10), wherein the front end of the connecting rod (9) is hinged with the front end of the clamping arm (3) through the front shaft (8), the rear end of the connecting rod (9) is hinged with the front end of the pull rod (4) through the rear shaft (10), and the rear shaft (10) is in sliding connection with the clamp head frame (2) along the front-rear direction.
6. The clamping device as claimed in claim 4, characterized in that: the clamping piece (5) is fixedly provided with a middle rod (11), and the front end of the middle rod (11) is suitable for being clamped by the front ends of the two clamping arms (3).
7. The clamping device as claimed in claim 5, characterized in that: the detachable structure comprises a notch (403) arranged at the front end part of the pull rod (4), a connecting hole (402) matched with the rear shaft (10) is formed in the front end of the pull rod (4), the rear shaft (10) is inserted into the connecting hole (402), the notch (403) is communicated with the connecting hole (402), and the maximum width of the notch (403) is smaller than the diameter of the rear shaft (10).
8. An anastomosis clip for an endoscope, comprising: comprising a clamping device as claimed in any of the claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210665630.5A CN115137438B (en) | 2022-06-14 | 2022-06-14 | Clamping device and anastomosis clamp for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210665630.5A CN115137438B (en) | 2022-06-14 | 2022-06-14 | Clamping device and anastomosis clamp for endoscope |
Publications (2)
| Publication Number | Publication Date |
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| CN115137438A CN115137438A (en) | 2022-10-04 |
| CN115137438B true CN115137438B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210665630.5A Active CN115137438B (en) | 2022-06-14 | 2022-06-14 | Clamping device and anastomosis clamp for endoscope |
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| CN (1) | CN115137438B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115444491B (en) * | 2022-10-11 | 2024-01-30 | 常州市久虹医疗器械有限公司 | Clamping assembly and hemostatic device for endoscope |
| CN116115288B (en) * | 2023-03-10 | 2024-03-12 | 江苏唯德康医疗科技有限公司 | Hemostatic clamp assembly and hemostatic clamp comprising same |
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|---|---|
| CN115137438A (en) | 2022-10-04 |
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