CN114376676A

CN114376676A - Puncture clamp with synchronous rotation

Info

Publication number: CN114376676A
Application number: CN202111660088.6A
Authority: CN
Inventors: 邵南; 吴智明; 王云兵; 訾振军
Original assignee: Deke Medtech (hangzhou) Inc
Current assignee: Deke Medtech (hangzhou) Inc
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-22

Abstract

The application discloses rotatory synchronous puncture clamp includes: a control handle; supporting a tube; a drive tube; a clamp arm; a puncture knife; the supporting tube and the control handle are rotatably installed, and the puncture knife and the supporting tube are arranged in a linkage mode in the circumferential direction. The technical scheme that the application is disclosed sets up the rotation synchronization who has realized puncture sword and stay tube through the circumference linkage of puncture sword and stay tube, has improved the security that the puncture clamp used when providing the structural foundation for freely adjusting the angle of tong arm, avoids the device damage and the use risk that the maloperation brought.

Description

Puncture clamp with synchronous rotation

Technical Field

The application relates to the field of medical instruments, in particular to a puncture clamp with synchronous rotation.

Background

The endoscope clamp is a surgical instrument which is often used in laparoscopic and thoracoscopic operations, such as non-invasive grasping forceps, needle holding forceps and the like; the main purpose is to achieve the purpose of operation through a minimally invasive operation mode. For example, chinese patent publication No. CN211381619U discloses an endoscopic forceps, which includes: the clamp comprises a clamp body, a conduit and a clamping part.

With the progress of treatment means, medical workers find that the existing endoscopic clamp has too single function and can not realize multiple functions in a single-hole cavity. For example, the atraumatic forceps can only grasp and clamp tissues and cannot observe, cut and put guide wires and the like. For example, in an operation requiring operation on a pericardium, the pericardium needs to be cut to realize the intervention of a guide wire, and the prior art cannot meet the clinical requirement.

For example, chinese patent publication No. CN102458291A discloses a surgical tool assembly for use in electrosurgery comprising an elongated housing movable in a longitudinal direction. The assembly includes a pair of jaws, each jaw having a plurality of teeth for grasping tissue and a support element supporting the plurality of teeth. The support member is partially disposed within the housing and extends to a distal end disposed outside of the housing.

The inventor believes that there is still room for improvement in the prior art solutions.

Disclosure of Invention

In order to solve the technical problem, the application discloses rotatory synchronous puncture clamp includes:

the control handle is provided with a first driving assembly and a second driving assembly;

the proximal end of the supporting tube is connected to the control handle, and the distal end of the supporting tube is provided with a forceps shaft;

the driving pipe is slidably mounted in the supporting pipe, and the near end of the driving pipe is linked with the first driving assembly;

the clamp arms are arranged in pairs, each clamp arm is hinged to the clamp shaft, each clamp arm is provided with a working part and an opposite transmission part, the working parts are positioned on one side of the clamp shaft, a clamping area is arranged between the working parts of the clamp arms, and the transmission parts are connected to the far end of the driving pipe;

the puncture knife is slidably mounted in the drive tube, the proximal end of the puncture knife is linked with the second drive assembly, and the distal end of the puncture knife is provided with a puncture position extending into the clamping area and an initial position withdrawing from the clamping area;

the supporting tube and the control handle are rotatably installed, and the puncture knife and the supporting tube are arranged in a linkage mode in the circumferential direction.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the puncture clamp further comprises a linkage tube rotatably arranged between the driving tube and the puncture knife, the proximal end of the driving tube is circumferentially linked with the proximal end of the linkage tube, and the distal end of the linkage tube is circumferentially linked with the distal end of the puncture knife.

The linkage tube realizes the circumferential linkage of the near end of the driving tube and the far end of the puncture knife through self transmission.

Optionally, a first transmission member arranged radially is arranged at the proximal end of the driving tube, and a second transmission member matched with the first transmission member is arranged at the proximal end of the linkage tube.

The first transmission piece and the second transmission piece are matched in the radial direction to realize circumferential synchronization.

Optionally, the first transmission member is a positioning slot arranged on a side wall of the driving pipe, and the second transmission member is a radial protrusion arranged on the linkage pipe; an opening is formed in the far-end side or the near-end side of the positioning clamping groove, and the radial convex block enters the positioning clamping groove from the opening in the assembling process of the driving tube and the linkage tube.

The setting mode of this embodiment can improve assembly effect and product stability when guaranteeing synchronous effect.

Optionally, the intracavity cross-section of the linkage tube is non-circular, and the cross-sectional shape of the puncture knife is complementary to the intracavity cross-sectional shape of the linkage tube.

The linkage pipe and the puncture knife realize the transmission relationship through shape complementation, and the structure is compact.

Optionally, the distal end portion of the linkage tube is circumferentially linked with the distal end portion of the puncture knife.

Independently of the above embodiments, this embodiment has the advantage that the synchronization effect of the remote location can be improved.

Optionally, a synchronous sleeve is arranged inside the distal end of the driving tube, the synchronous sleeve is fixedly connected with the driving tube and is provided with an incision, the puncture knife located at the initial position is located in the synchronous sleeve, and the puncture knife enters the puncture position through the incision.

The synchronous sleeve realizes the remote synchronization of the driving tube and the puncture knife through the knife outlet.

Optionally, the puncture knife includes a puncture part for puncturing and a control tube extending to a proximal end, the puncture part is a flat structure, the synchronization sleeve extends from the incision to the proximal end to form a synchronization channel, and the synchronization channel is matched with the puncture part in shape.

The synchronous channel can guide the movement of the puncture part while synchronizing the puncture knife and the driving tube.

Optionally, the proximal end of the drive tube is rotationally engaged with the first drive assembly.

The arrangement mode of the rotary fit can provide more free movement stroke for the driving pipe, so that the degree of freedom of the clamp assembly is improved.

Optionally, the first driving assembly includes a driving rocker arm rotatably mounted on the control handle, and the driving rocker arm includes a driving portion for driving the driving tube to move and a force application portion extending to the outside of the control handle.

The driving rocker arm is an actual acting part of the first driving assembly.

Optionally, a driving member is fixed on the driving pipe, and a driving portion of the driving rocker arm is matched with the driving member to drive the driving pipe to move relative to the supporting pipe; in the axial direction of the driving pipe, one-way transmission or two-way transmission is adopted between the driving piece and the driving part.

Different transmission modes have different technical effects.

Optionally, the second driving assembly includes:

the resetting piece is arranged between the control handle and the puncture knife and is used for keeping the puncture knife at the initial position;

the operating part is movably mounted on the control handle, the near end of the puncture knife extends into the control handle and is linked with the operating part, and the operating part is used for driving the puncture knife to overcome the reset part and enter the puncture position.

The second driving component is used for realizing the motion process of the puncture knife.

Optionally, the forceps shaft includes a first half shaft and a second half shaft which are coaxially arranged, a knife passing gap is formed between the first half shaft and the second half shaft, and the puncture knife enters the puncture position through the knife passing gap.

The knife gap can realize the direct action of the puncture knife on the clamping areas of the two forceps arms.

Optionally, in the axial direction of the two forceps arms in rotating fit, the middle of each forceps arm is provided with a guide groove, the guide groove extends from the proximal end side to the distal end side of the forceps arm, and the lateral edges of the puncture knife located at the puncture position are respectively located in the guide grooves of the two forceps arms.

The guiding groove can improve the stability of the puncture knife.

The technical scheme that this application discloses sets up the rotation synchronization who has realized puncture sword and stay tube through the circumference linkage of puncture sword and stay tube, has improved the security that the puncture clamp used when providing the structural foundation for the angle of freely adjusting the tong arm, avoids the device damage and the use risk that the maloperation brought.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of a first embodiment of a piercing clamp;

FIG. 2 is a perspective view of the piercing clamp of FIG. 1;

FIG. 3 is a schematic view of the internal assembly of the control handle of the piercing pliers of FIG. 1;

FIG. 4 is a schematic view of the interior of the piercing clamp of FIG. 1 in cross-section;

FIG. 5 is a schematic view of a first embodiment of a clamp assembly;

FIG. 6 is a schematic view of the components of the caliper assembly of FIG. 5 in cooperation;

FIG. 7 is a distal end schematic view of the jaw assembly support tube and drive tube of FIG. 5;

FIG. 8 is an exploded distal end view of the jaw assembly of FIG. 5;

FIG. 9 is a schematic view of the first embodiment of the clamp assembly assembled with the second drive assembly;

FIG. 10 is an exploded view of the tubular members of the piercing pliers of the first embodiment;

FIG. 11 is a schematic view of the internal components of the control handle of the first embodiment of the piercing pliers;

FIG. 12 is an assembly view of the first drive assembly in the first embodiment;

FIG. 13 is a schematic view of a second embodiment of a piercing clamp;

FIG. 14 is a schematic view of the interior of the piercing clamp of FIG. 13 in cross-section;

FIG. 15 is a sectional view showing the internal structure of the distal end portion of the piercing jaw in the second embodiment;

FIG. 16 is an assembly view of the first drive assembly in the second embodiment;

FIG. 17 is a perspective view of the piercing clamp of FIG. 13;

FIG. 18 is a schematic view of the internal assembly of the control handle of the piercing pliers of FIG. 17;

FIG. 19 is a schematic illustration in cross-section of the interior of the piercing clamp of FIG. 17;

FIG. 20 is an enlarged proximal end view of the second drive assembly of the piercing jaw of FIG. 17;

FIG. 21 is an exploded view of the tubular members of the piercing pliers of the second embodiment;

FIG. 22 is a schematic view showing the configuration of the distal ends of the support tube and the drive tube in the second embodiment;

FIG. 23 is a top view of the clamp assembly in the second embodiment;

FIG. 24 is a schematic view of the open position of the jaw assembly of the piercing jaw of FIG. 13;

FIG. 25 is a schematic illustration of the positional relationship of the internal components of the control handle of the piercing pliers of FIG. 24;

FIG. 26 is a schematic view of the jaw assembly in a closed position in accordance with the second embodiment;

FIG. 27 is a schematic view of the clamp assembly in the open position in accordance with the second embodiment;

FIG. 28 is a schematic view of the second embodiment with the piercing knife in a piercing position;

FIG. 29 is another perspective view of the piercing pliers of FIG. 28;

FIG. 30 is a schematic illustration of a puncture clamp in a front view of the clamp assembly in a second embodiment;

FIG. 31 is an enlarged view of the clamp assembly of FIG. 30.

The reference numerals in the figures are illustrated as follows:

1. a control handle;

11. a first drive assembly; 111. a driving rocker arm; 1111. a drive section; 1112. a force application part; 1113. a drive slot; 112. a first locking assembly; 1121. a ratchet; 1122. a pawl; 1123. locking the elastic member; 1124. a lock release member; 113. a fixed arm; 114. a holder;

12. a second drive assembly; 121. a reset member; 122. an operating member;

2. a clamp assembly;

21. supporting a tube; 211. a clamp shaft; 2111. a first half shaft; 2112. a second half shaft; 2113. a blade passing gap; 212. a rotating sleeve;

22. a drive tube; 221. a linkage pipe; 222. a first transmission member; 2221. positioning the clamping groove; 2222. opening the opening; 223. a second transmission member; 2231. a radial projection; 224. a synchronous sleeve; 2241. a synchronization channel; 225. a drive member;

23. a clamp arm; 231. a working part; 2311. a recessed region; 2312. an accommodating space; 232. a transmission section; 233. a clamping area; 234. a guide groove; 235. a guide inlet; 243. a friction-increasing structure; 244. a first anti-slip tooth; 245. a second anti-slip tooth;

3. a puncture knife; 31. a puncture section; 32. a control tube;

4. an endoscope assembly; 41. an endoscope tube; 42. and guiding the pipeline.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-31, the present application discloses a rotationally synchronized piercing forceps, comprising:

the control device comprises a control handle 1, wherein a first driving assembly 11 and a second driving assembly 12 are arranged on the control handle 1;

a support tube 21, the proximal end of the support tube 21 is connected with the control handle 1, and the distal end of the support tube 21 is provided with a forceps shaft 211;

a driving tube 22 slidably mounted in the supporting tube 21, a proximal end of the driving tube 22 being coupled to the first driving assembly 11;

the forceps arms 23 are arranged in pairs, each forceps arm 23 is hinged to the forceps shaft 211, each forceps arm 23 is provided with a working part 231 and an opposite transmission part 232, the working parts 231 on one side of the forceps shaft 211 are arranged between the forceps arms 23, a clamping area 233 is formed between the working parts 231, and the transmission parts 232 are connected to the far end of the driving pipe 22;

the puncture knife 3 is slidably arranged in the driving tube 22, the proximal end of the puncture knife 3 is linked with the second driving component 12, and the distal end of the puncture knife 3 is provided with a puncture position extending into the clamping area 233 and an initial position withdrawing from the clamping area 233;

the supporting tube 21 is rotatably installed with the control handle 1, and the puncture knife 3 is linked with the supporting tube 21 in the circumferential direction.

The technical scheme that this application is disclosed sets up the rotation synchronization who has realized puncture sword 3 and clamp subassembly 2 through the circumference linkage of puncture sword 3 with stay tube 21, has improved the security that the puncture clamp used when providing the structural basis for freely adjusting the angle of tong arm 23, avoids the device damage and the use risk that the maloperation brought.

In a specific linkage relation, referring to the embodiment shown in fig. 10, the puncture forceps further includes a linkage tube 221 rotatably disposed between the driving tube 22 and the puncture knife 3, the proximal end of the driving tube 22 is circumferentially linked with the proximal end of the linkage tube 221, and the distal end of the linkage tube 221 is circumferentially linked with the distal end of the puncture knife 3. The linkage tube 221 realizes circumferential linkage of the proximal end of the drive tube 22 and the distal end of the puncture knife 3 through self transmission. In the drawing, the transmission of the driving torque is achieved by the interlocking tube 221 having its own elasticity against torsion. In the circumferential torque transmission manner, the proximal end of the driving tube 22 is provided with a first transmission member 222 arranged in the radial direction, and the proximal end of the linkage tube 221 is provided with a second transmission member 223 matched with the first transmission member 222. The first transmission piece 222 and the second transmission piece 223 are radially matched to realize circumferential synchronization. In the drawings, the first transmission piece 222 is a positioning slot 2221 provided on the side wall of the drive pipe 22, and the second transmission piece 223 is a radial projection 2231 provided on the linkage pipe 221; an opening 2222 is formed at the distal end side or the proximal end side of the positioning slot 2221, and the radial protrusion 2231 enters the positioning slot 2221 from the opening 2222 in the process of assembling the driving tube 22 and the linkage tube 221. It will be appreciated that the positions of the detents 2221 and radial projections 2231 may be interchanged in a particular product. The setting mode of this embodiment can be in the assurance except that synchronous effect, can also make things convenient for the assembly of first driving medium 222 and second driving medium 223, and the mutual block of first driving medium 222 and second driving medium 223 can improve linkage pipe 221 and drive tube 22's the connection effect to improve assembly effect and product stability. In the fitting relationship between the interlocking tube 221 and the puncture knife 3, as shown in the drawing, the cross-sectional shape of the interlocking tube 221 in the cavity is non-circular, and the cross-sectional shape of the puncture knife 3 is complementary to the cross-sectional shape of the interlocking tube 221 in the cavity. In this embodiment, the linkage tube 221 and the puncture knife 3 realize a transmission relationship by shape complementation, and the structure is compact. Meanwhile, as can be seen from the figure, in addition to the puncture blade 3, the guide conduit 42 of the endoscope is also inserted into the linkage tube 221, and the cross-sectional shape of the cavity of the linkage tube 221 is provided with a corresponding groove corresponding to the guide conduit 42 of the endoscope, and the puncture blade 3 and the guide conduit 42 of the endoscope are adapted to each other in shape, that is, the puncture blade 3 is provided with an arc-shaped groove avoiding the guide conduit 42 of the endoscope.

In addition to the linkage shown above, the present application provides another linkage, and in the embodiment shown in fig. 13 to 31, the distal end portion of the linkage tube 221 is circumferentially linked with the distal end portion of the puncture blade 3. The advantage of this embodiment is that the synchronization effect of the remote location can be improved. In a specific linkage arrangement, as shown in the drawing, a synchronous sleeve 224 is arranged inside the distal end portion of the driving tube 22, the synchronous sleeve 224 is fixedly connected with the driving tube 22 and is provided with a knife outlet, the puncture knife 3 located at the initial position is located in the synchronous sleeve 224, and the puncture knife 3 enters the puncture position through the knife outlet. The synchronization sleeve 224 achieves distal synchronization of the drive tube 22 and the puncture knife 3 through the exit knife edge. The advantage of the synchronization mode in this embodiment is that the synchronization sleeve 224 directly acts on the distal end of the puncture knife 3, so the synchronization effect is more stable and accurate, the synchronization deviation caused by the component transmission is avoided, and the tube diameters of the various parts can be further optimized. Further, the puncture knife 3 comprises a puncture part 31 for puncture and a control tube 32 extending to the proximal end, the puncture part 31 is of a flat structure, the synchronization sleeve 224 extends from the knife outlet to the proximal end to form a synchronization channel 2241, and the shape of the synchronization channel 2241 is matched with the shape of the puncture part 31. The synchronization passage 2241 can guide the movement of the puncturing part 31 while synchronizing the puncturing blade 3 and the driving tube 22.

In conjunction with the above, it will be appreciated that the clamp assembly 2 of the present application may be rotated about the control handle 1 to avoid interference with the first drive assembly 11, as referenced in one embodiment, the proximal end of the drive tube 22 is rotationally engaged with the first drive assembly 11. Rotational engagement is to be understood as the ability of the drive tube 22 to rotate relatively freely with respect to the first drive assembly 11 without being constrained by the first drive assembly 11. This arrangement provides more freedom of movement of the drive tube 22, thereby increasing the freedom of movement of the clamp assembly 2. In the aspect of rotation, a rotating sleeve 212 is arranged at the proximal end of the supporting tube 21 and is rotatably connected with the control handle 1, and the rotating sleeve 212 can rotate the supporting tube 21 to drive the caliper spindle 211 to rotate, so as to further rotate the caliper assembly 2. While rotation of the clamp assembly 2 rotates the drive tube 22.

Similarly, the puncture knife 3 also needs to rotate synchronously with the clamp assembly 2, and can rotate independently or in a linkage manner in terms of the implementation form of rotation. The specific linkage path can drive the puncture knife 3 to rotate through the driving tube 22; or the rotating sleeve 212 drives the driving tube 22, the driving tube 22 drives the synchronous sleeve 224, and the synchronous sleeve 224 drives the puncture knife 3. In the arrangement of the linkage rotation, the puncture knife 3 and the second drive component 12 can be separated from each other so as to prevent the driving force of the second drive component 12 from influencing the linkage, and the specific separation mode can be referred to the following description about the operation member axially abutting against and circumferentially releasing from the end of the proximal end of the puncture knife.

In the specific structure of the first driving assembly 11, the first driving assembly 11 includes a driving swing arm 111 rotatably mounted on the control handle 1, and the driving swing arm 111 includes a driving portion 1111 for driving the driving pipe 22 to move and a force applying portion 1112 extending to the outside of the control handle 1. The driving rocker 111 is the actual working part of the first driving assembly 11. The first driving unit 11 further includes a first locking unit 112 acting between the force application portion 1112 and the control handle 1, and the first locking unit 112 is used for maintaining the relative positional relationship between the driving swing arm 111 and the control handle 1. The first locking member 112 includes a ratchet 1121 fixedly installed on the force application portion 1112, a pawl 1122 rotatably installed on the control handle 1, a locking elastic member 1123 for maintaining the position of the pawl 1122, and a lock releasing member 1124 for driving the pawl 1122 to release the ratchet 1121. Also on the control handle 1 is a fixed arm 113 opposite to the driving swing arm 111, wherein a pawl 1122, a locking elastic member 1123 and a locking release member 1124 are mounted on the fixed arm 113. The fixed arm 113 is fixedly connected with the control handle 1 and arranged opposite to the driving rocker arm 111, so that the medical staff can conveniently hold and operate. The first drive assembly 11 further comprises a retaining member 114 for maintaining the relative position of the drive tube 22 with respect to the control handle 1, the retaining member 114 acting between the drive rocker 111 and the control handle 1. The driving rocker arm 111 overcomes the holding force of the holder 114 during driving. The working process, the assembly relationship and the principle of the components of the first driving assembly 11 and the first locking assembly 112 can be unambiguously known by those skilled in the art from the drawings, and are not described in detail herein.

Referring to an embodiment of the driving implementation of the first driving assembly 11 and the driving pipe 22, a driving member 225 is fixed on the driving pipe 22, and the driving portion 1111 of the driving rocker arm 111 cooperates with the driving member 225 to drive the driving pipe 22 to move relative to the supporting pipe 21; in the axial direction of the driving pipe 22, the driving member 225 and the driving portion 1111 are in one-way transmission (refer to fig. 1 to 12) or two-way transmission (refer to fig. 13 to 31).

In the embodiment of fig. 1 to 12, the driving member 225 and the driving portion 1111 are in one-way transmission. The driving member 225 is a disk shape with a radial dimension larger than that of the driving tube 22, the driving portion 1111 abuts against the distal end of the driving member 225, and when the driving rocker arm 111 is forced to swing, the driving portion 1111 presses the driving member 225 to move and realize the movement of the driving tube 22 relative to the control handle 1. The holder 114 is disposed between the driver 225 and the control handle 1. In the drawings, the retaining member 114 is a coil spring wound around the drive tube 22 and having both ends pressed against the proximal end of the driving member 225 and the control handle 1, respectively. The arrangement of the present embodiment has an advantage of simple structure and compact arrangement.

In the embodiment of fig. 13-31, the driving member 225 and the driving portion 1111 are in bidirectional transmission. Compared with the previous embodiment, the driving portion 1111 of the driving rocker arm 111 has at least one driving slot 1113, the driving member 225 is located in the driving slot 1113, and two side walls of the driving slot 1113 are bidirectionally engaged with the driving member 225 in the axial direction of the driving tube 22. In a detail of the drive member 225, the drive member 225 is a sphere having a radial dimension greater than the drive tube 22. The arrangement of the embodiment has the advantages that the bidirectional transmission of the driving pipe 22 can be realized through the driving rocker arm 111, so that the situation that the driving pipe 22 is clamped and blocked due to the stress of the clamp assembly 2 is avoided, and the working stability of the clamp assembly 2 is improved.

The working process in this application is also performed in dependence of the movement of the puncture knife 3, and the second drive assembly 12 is used to perform the movement of the puncture knife 3. Referring to an embodiment, the second driving assembly 12 includes:

a reset member 121 disposed between the control handle 1 and the puncture knife 3, the reset member 121 being used to hold the puncture knife 3 at an initial position;

the operation member 122 is movably mounted on the control handle 1, the proximal end of the puncture knife 3 extends into the control handle 1 and is linked with the operation member 122, and the operation member 122 is used for driving the puncture knife 3 to overcome the reset member 121 and enter a puncture position.

As for the above, the installation effect of the operation member 122 needs to be able to release the rotation stroke of the puncture knife 3, that is, the operation member 122 can rotate synchronously with the puncture knife 3; alternatively, the operation member 122 and the piercing knife 3 are rotationally engaged, i.e., circumferentially released. In other words, the operating member 122 is rotatably attached to the control handle 1 or axially slidably attached to the control handle 1.

In the present application, the puncture blade 3 is slidably mounted in the drive tube 22, and as can be seen from the drawings, the puncture blade 3 enters the puncture site from the inside of the jaw formed by the two forceps arms 23. In order to overcome the interference of the forceps shaft 211 with the movement path of the puncture blade 3, a special shaft can be selected, i.e. the axial extension path of the shaft is changed to avoid the interference, and in an embodiment, the forceps shaft 211 comprises a first half shaft 2111 and a second half shaft 2112 which are coaxially arranged, a blade passing gap 2113 is formed between the first half shaft 2111 and the second half shaft 2112, and the puncture blade 3 enters the puncture site through the blade passing gap 2113. The knife passing gap 2113 enables the piercing knife 3 to directly act on the clamping region 233 of the two jawarms 23. A first half shaft 2111 and a second half shaft 2112 are fixed to the side walls of the distal end of the support tube 21, respectively, and are disposed opposite to each other.

In order to further enhance the effect of the engagement between the forceps arms 23 and the puncture knife 3, in one embodiment, a guide groove 234 is formed in the middle of each forceps arm 23 in the direction of the axis of the rotation engagement between the two forceps arms 23 ((which may be realized by the forceps shaft 211 mentioned above, and the axis is understood to be a spatially equivalent axis rather than a specific rotation shaft member)). The guide groove 234 can improve the stability of the puncture blade 3. Referring to fig. 8, the corresponding guide groove 234 is open on the opposite side of the jawarms 23. Referring to the embodiment of fig. 26 and 27, the distal sides of the jawarms 23 converge toward each other and the corresponding guide slots 234 open to the opposite sides of the jawarms 23.

In actual practice, the piercing blade 3 in the piercing position is retracted relative to the distal end of the jaw assembly 2 to avoid unnecessary damage to surrounding tissue. In other words, the distal end side of the puncture blade 3 does not protrude beyond the distal end side of the guide groove 234. Further, referring to the embodiment shown in FIG. 8, the proximal side of the guide groove 234 is provided with a guide entrance 235.

In addition to the differences in the rotational synchronization of the piercing knife 3 and the jaw assembly 2 mentioned above and the transmission of the drive 225 and the drive 1111, the first and second embodiments include differences, which will be explained in detail below with reference to the drawings.

Referring to fig. 1 to 12, the distal end face of each of the forceps arms 23 of the first embodiment of the forceps assembly 2 is provided with a friction-increasing structure 243. In the drawings, the friction enhancing structure 243 is a plurality of protrusions provided on the end surface of the distal end of the caliper arm 23, the protrusions being arranged in an array. In some treatment procedures, the friction enhancing structure 243 can enhance the effect of the clamp assembly 2 on the target object. For example, in a pericardial operation, the friction enhancing structure 243 can facilitate the grasping of the pericardium attached to the myocardium by the clamp assembly 2; for example, after piercing the target object, the friction increasing structure 243 can facilitate the operation of the clamping assembly 2 to enlarge the gap of the pierced object. Referring to the drawings, the opposing side of the jawarms 23 is provided with a first anti-slip tooth 244. The end surfaces of the two forceps arms 23 facing away from each other are provided with second anti-slip teeth 245. First anti-slip teeth 244 can improve the gripping effect of jawarms 23 and second anti-slip teeth 245 can provide a more versatile mechanism foundation for jawarms 23, e.g., in the gap-enlarging operation mentioned above, second anti-slip teeth 245 can engage the gap edges, improving operating efficiency.

Referring to FIG. 7, the endoscope assembly 4 is disposed within the interior of the jaw assembly 2. In the driving distinction of the piercing knife 3, the distal ends of the operating member 122 and the piercing knife 3 may be arranged in the above-mentioned circumferentially releasable manner, or may be fixedly connected. The operating member 122 fixedly connected to the operating member can not only move axially to drive the puncture knife 3 to enter or exit the puncture site, but also rotate to finely adjust the circumferential angle of the puncture knife 3 relative to the control handle 1, so as to compensate for a synchronization error that may occur when the linkage pipe 221 is synchronized in the first embodiment.

Referring to fig. 13 to 31, the distal end of the clamp assembly 2 in the second embodiment has two cooperating jawarms 23, the two jawarms 23 being pivotally coupled to each other about an axis, each jawarms 23 having a working portion 231 on one side of the axis and a transmission portion 232 on the other side, the working portions 231 of the two jawarms 23 having a closed position and an open position relative to each other; the opposite sides of the working parts 231 of the two clamp arms 23 are respectively provided with a recessed area 2311, and when the two clamp arms 23 are in the close position, the recessed areas 2311 on the working parts 231 of the two clamp arms 23 enclose an accommodating space 2312. In addition to the differences in the jaw assembly 2, the endoscope assembly 4 of the second embodiment is disposed outside of the jaw assembly 2. The endoscope assembly 4 includes an endoscope tube 41 sleeved on the clamp assembly 2, a guide conduit 42 for the endoscope to pass through is arranged in the endoscope tube 41, and the axis of the distal end side of the guide conduit 42 points to the accommodating space 2312. The guide conduit 42 is disposed in parallel with the mounting channel in the caliper assembly 2. The puncture knife 3 is movably installed in an installation channel, so that the object clamped by the clamping component 2 can be punctured, wherein the installation channel is arranged in the pipeline of the installation clamping component 2 and extends in the axial direction. In the embodiment shown in the figures, the installation channel is realized by the tube inner space of the drive tube 22.

The guide line 42 is mainly used for insertion and guidance of the endoscope, and particularly, at a distal end portion, can stabilize the angle of view of the endoscope, thereby ensuring stable observation. The guide conduit 42 is arranged in parallel with the installation channel as a whole, ensuring the size of the entrance of the whole instrument. The distal end side of the guide duct 42 is bent to be directed toward the accommodation space 2312. In this embodiment, the guiding pipeline 42 and the installation channel are not coaxially arranged, so that the guiding pipeline is bent to point to the accommodating space, thereby guiding the endoscope to stably observe the accommodating space; meanwhile, the bent part can position the endoscope, certain movement resistance of the endoscope is increased, and the stability of the endoscope is kept. The function of positioning the endoscope can also be achieved by a local reduction of the guide conduit 42. Similarly, the bend or local diameter reduction of the positioning endoscope may be provided at any suitable position in the guide conduit 42. In this embodiment, the endoscope assembly 4 may also be selectively mounted. Referring to the drawings, the endoscope 41 is movably sleeved on the support tube 21, and the proximal end of the endoscope 41 is engaged with the control handle 1. The slip-on endoscope tube 41 also isolates the support tube 21 from possible rotation, such as the situation where the jaw assembly 2 needs to be rotated as mentioned above. The external and flexibly matched arrangement mode of the endoscope in the embodiment can effectively reduce the sizes of the clamp assembly 2 and the first driving assembly 11, thereby providing a foundation for flexible arrangement of the puncture clamp.

In the second embodiment, in terms of the driving difference of the puncture blade 3, the end portion of the proximal end of the puncture blade 3 and the end portion of the distal end of the operation member 122 are axially abutted and circumferentially released in the axial direction of the puncture blade 3. Further, a first rotation plane is provided at the distal end of the operation member 122, a second rotation plane is provided at the proximal end of the puncture knife 3, and the first rotation plane and the second rotation plane have a matching state in which the first rotation plane and the second rotation plane are axially abutted and circumferentially released. The operation part 122 can only drive the puncture knife 3 to enter a puncture position through the self axial movement towards the far end, and the operation part 122 has no restriction on the puncture knife 3 in the circumferential direction, so that the safety isolation to a certain degree is realized; the design characteristics of high synchronization precision of the driving tube 22 and the puncture knife 3 in the direct synchronization of the far ends in the second embodiment can be well matched, and the puncture knife 3 can more smoothly complete the synchronization process.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Rotatory synchronous puncture clamp, its characterized in that includes:

2. The synchronized rotation piercing forceps of claim 1, further comprising a linkage tube rotatably disposed between the drive tube and the piercing knife, wherein the proximal end of the drive tube is circumferentially linked to the proximal end of the linkage tube, and the distal end of the linkage tube is circumferentially linked to the distal end of the piercing knife.

3. The rotationally synchronized lancing clamp of claim 2, wherein the proximal end of the drive tube is provided with a radially disposed first transmission member and the proximal end of the linkage tube is provided with a second transmission member that is intermeshed with the first transmission member.

4. The rotationally synchronized lancing clamp of claim 3, wherein the first transmission member is a detent slot provided on a side wall of the drive tube and the second transmission member is a radial projection provided on the linkage tube; an opening is formed in the far-end side or the near-end side of the positioning clamping groove, and the radial convex block enters the positioning clamping groove from the opening in the assembling process of the driving tube and the linkage tube.

5. The synchronized rotation piercing forceps of claim 2, wherein the linkage tube has a non-circular cross-sectional shape within the lumen, and the piercing knife has a cross-sectional shape that is complementary to the cross-sectional shape of the linkage tube within the lumen.

6. The synchronized rotation piercing forceps of claim 2, wherein the distal portion of the linkage tube is circumferentially linked to the distal portion of the piercing knife.

7. The synchronized rotary piercing forceps of claim 1, wherein the drive tube has a synchronization sleeve disposed inside the distal portion thereof, the synchronization sleeve is fixedly connected to the drive tube and has an exit port, the piercing blade in the initial position is disposed inside the synchronization sleeve, and the piercing blade enters the piercing position through the exit port.

8. The synchronized rotary piercing forceps of claim 7, wherein the piercing blade includes a piercing portion for piercing and a control tube extending proximally, the piercing portion is of a flattened configuration, and the synchronization sleeve extends proximally from the exit blade to form a synchronization channel shaped to fit the piercing portion.

9. The rotationally synchronized piercing clamp of claim 1, wherein the proximal end of the drive tube is rotationally engaged with the first drive assembly.

10. The rotationally synchronized lancing clamp of claim 9, wherein the first drive assembly includes a drive rocker pivotally mounted to the control handle, the drive rocker including a drive portion for actuating movement of the drive tube and a force application portion extending outside of the control handle.

11. The rotationally synchronized lancing clamp of claim 10, wherein a drive member is secured to the drive tube, and a drive portion of the drive rocker arm cooperates with the drive member to move the drive tube relative to the support tube; in the axial direction of the driving pipe, one-way transmission or two-way transmission is adopted between the driving piece and the driving part.

12. The rotationally synchronized lancing clamp of claim 1, wherein the second drive assembly includes:

13. The rotationally synchronized lancing clamp of claim 1, wherein the clamp shaft includes first and second coaxially disposed half shafts with a knife clearance therebetween, the lancing knife being advanced into the lancing site through the knife clearance.

14. The synchronized rotary piercing forceps of claim 1, wherein the forceps arms are provided with a guide groove in the middle thereof in the axial direction in which the forceps arms are rotatably engaged, the guide groove extending from the proximal end to the distal end of the forceps arms, and the side edges of the piercing blade at the piercing position are respectively located in the guide grooves of the forceps arms.