Stable puncture clamp

Abstract

The present application discloses a stable clamping puncture clamp, comprising: a control handle and a clamp assembly, wherein the distal end of the clamp assembly has two clamp arms that cooperate with each other, the two clamp arms rotate and cooperate around an axis, each clamp arm has a working part on one side of the axis and a transmission part on the other end, and the working parts of the two clamp arms have a relative close position and an open position; the working parts of the two clamp arms have a recessed area on the opposite side, and when the two clamp arms are in the close position, the recessed areas on the working parts of the two clamp arms form a receiving space. The technical solution disclosed in the present application forms a receiving space through the recess of the clamp arms, thereby better realizing the clamping of the target object or tissue by the clamp assembly, and the receiving space can also realize the stacking of the clamped objects in space, thereby providing a basis for the next operation.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a puncture clamp with stable clamping. Background Art

[0002] Endoscopic clamps are surgical instruments frequently used in laparoscopic and thoracoscopic surgeries, such as non-traumatic grasping forceps and needle holding forceps, etc. Their main purpose is to achieve surgical objectives through minimally invasive surgery. For example, a Chinese patent document with publication number CN211381619U discloses an endoscopic clamp, which includes a clamp body, a catheter, and a clamping part.

[0003] With the advancement of treatment methods, medical staff have found that the existing endoscopic clamps are too single-function and cannot achieve multiple functions in a single-hole cavity. For example, non-invasive clamps can only grasp tissues and cannot observe, cut, place guide wires, etc. For example, in surgeries that require pericardial operations, the pericardium needs to be cut to achieve guide wire intervention, and existing technologies cannot meet clinical needs.

[0004] For example, a Chinese patent document with publication number CN102458291A discloses a surgical tool assembly for use in electrosurgery, comprising an elongated housing that can move in a longitudinal direction. The assembly comprises a pair of jaws, each of which has a plurality of teeth for grasping tissue and a support element that supports the plurality of teeth. The support element is partially disposed within the housing and extends to a distal end disposed outside the housing.

[0005] The inventor believes that there is still room for improvement in the technical solutions in the prior art. Summary of the invention

[0006] In order to solve the above technical problems, the present application discloses a stable clamping puncture clamp, comprising:

[0007] A control handle, wherein the control handle is provided with a first drive assembly;

[0008] A clamp assembly, disposed on the control handle and controlled by the first drive assembly;

[0009] The distal end of the clamp assembly has two clamp arms that cooperate with each other, and the two clamp arms rotate and cooperate with each other around an axis. Each clamp arm has a working part on one side of the axis and a transmission part on the other end. The working parts of the two clamp arms have a relative closed position and an open position; the working parts of the two clamp arms have recessed areas on the sides facing each other, and when the two clamp arms are in the closed position, the recessed areas on the working parts of the two clamp arms form an accommodating space.

[0010] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0011] Optionally, the working part includes

[0012] A clamping section, wherein the clamping section is provided with a toothed structure, and the clamping sections of the two clamp arms mesh with each other;

[0013] An accommodating section, wherein the accommodating section is provided with the recessed area;

[0014] The connecting section of the two clamp arms is used to achieve rotational fit.

[0015] The accommodating sections of the two clamp arms are mutually surrounded to form an accommodating space, which can provide a receiving space for the clamped object, thereby ensuring the integrity of the clamped object while improving the clamping force.

[0016] Optionally, the distal ends of the clamping sections of the two clamp arms converge toward each other and smoothly transition to the accommodating section.

[0017] The converging distal ends enable a smaller size, thereby providing a structural basis for improved functionality.

[0018] Optionally, when the two clamp arms are in a closed position, a clamping gap is provided between the connecting sections of the two clamps, and the clamping gap is communicated with the accommodating space.

[0019] The clamping gap can further expand the size of the accommodating space and avoid unnecessary damage caused by the clamp arms coming close to each other.

[0020] Optionally, the recessed areas of the two clamp arms are symmetrically arranged and extend in the axial direction of the installation channel.

[0021] Optionally, in the projection of the axis direction of the rotational cooperation of the two pliers arms, the projection shape area of ​​the accommodating space accounts for at least 25% of the projection shape area of ​​the outer contours of the two pliers arms.

[0022] Optionally, the clamp assembly is provided with a mounting channel extending from the proximal end to the distal end; the puncture clamp further comprises a puncture knife, the distal end of the puncture knife having a puncture position extending into the accommodating space and an initial position withdrawn from the accommodating space;

[0023] The control handle is also provided with a second driving assembly, and the puncture knife is movably installed in the installation channel and is controlled by the second driving assembly.

[0024] Optionally, a guide groove is provided in the middle of each clamp arm in the axial direction of the rotational cooperation of the two clamp arms, and the guide groove extends from the proximal side to the distal side of the clamp arm, and the side edges of the puncture knife located at the puncture position are respectively located in the guide grooves of the two clamp arms.

[0025] Optionally, the distal ends of the two clamp arms converge toward each other and the guide grooves at corresponding positions are opened on the opposite sides of the two clamp arms.

[0026] Optionally, the puncture clamp further includes an endoscope assembly, wherein the endoscope assembly includes an endoscope tube sleeved on the clamp assembly, wherein a guide pipeline for the endoscope to pass through is provided in the endoscope tube, and the distal side axis of the guide pipeline points to the accommodating space.

[0027] Optionally, the guiding pipeline is arranged as a whole in parallel with the mounting channel.

[0028] Optionally, the distal end side of the guide tube is bent to point toward the accommodating space.

[0029] The guide pipeline pointing to the accommodating space can guide the endoscope to stably observe the accommodating space. At the same time, the bent part can position the endoscope, increase a certain movement resistance of the endoscope, and maintain the stability of the endoscope.

[0030] Optionally, the puncture clamp comprises a support tube, the proximal end of the support tube is connected to the control handle, and the distal end of the support tube is mounted with a clamp shaft of the clamp assembly;

[0031] The endoscope tube is movably sleeved on the support tube and the proximal end of the endoscope tube is engaged and positioned with the control handle.

[0032] Optionally, the proximal side of the guide tube extends in a direction away from the support tube and is used for an endoscope to pass through.

[0033] The technical solution disclosed in the present application forms a receiving space by means of the depression of the clamp arm, so as to better realize the clamping of the target object or tissue by the clamp assembly. The receiving space can also realize the stacking of the clamped objects in space, thus providing a basis for the next operation.

[0034] The specific beneficial technical effects will be further explained in the specific implementation methods in combination with specific structures or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a puncture clamp in an embodiment;

[0036] Figure 2 for Figure 1 A schematic diagram of the internal cross-section of the puncture clamp;

[0037] Figure 3 for Figure 1 A cross-sectional view of the internal structure of the distal end portion of the puncture clamp;

[0038] Figure 4 A schematic diagram of two clamp arms of a clamp assembly in one embodiment;

[0039] Figure 5 for Figure 4 Schematic diagram of the open position of the two clamp arms;

[0040] Figure 6 for Figure 4 Schematic diagram of the position of the two clamp arms close together;

[0041] Figure 7 for Figure 1 The first drive assembly assembly diagram in FIG.

[0042] Figure 8 for Figure 1 Schematic diagram of the three-dimensional structure of the puncture clamp;

[0043] Fig. 9 for Figure 8 A schematic diagram of the internal assembly of the control handle of the puncture clamp;

[0044] Fig.10 for Figure 8 A schematic diagram of the internal cross-section of the puncture clamp;

[0045] Fig.11 for Figure 8 An enlarged schematic diagram of the proximal end portion of the second drive assembly of the puncture clamp;

[0046] Fig.12 for Figure 1 Schematic diagram of explosion of various pipe fittings of the puncture clamp;

[0047] Fig.13 for Fig.12 Schematic diagram of the distal structure of the middle support tube and the driving tube;

[0048] Fig.14 for Figure 1 A schematic diagram of the open position of the clamp assembly of the puncture clamp;

[0049] Fig.15 for Fig.14 A schematic diagram of the position relationship of the internal components of the control handle of the puncture clamp;

[0050] Fig.16 for Figure 1 A schematic diagram of the clamp assembly in a closed position;

[0051] Fig.17 It is a schematic diagram of the state of the second driving component when the puncture knife is in the puncture position;

[0052] Fig.18 for Figure 1 Schematic diagram of the middle clamp assembly in the open position.

[0053] The reference numerals in the figures are described as follows:

[0054] 1. Control handle;

[0055] 11. first driving assembly; 111. driving rocker arm; 1111. driving part; 1112. force applying part; 1113. driving groove; 112. first locking assembly; 1121. ratchet; 1122. pawl; 1123. locking elastic member; 1124. locking release member; 113. fixed arm; 114. retaining member;

[0056] 12. second driving assembly; 121. reset member; 122. operating member; 1221. operating housing; 1222. operating rod; 1223. first rotating plane;

[0057] 131, first sealing interface; 132, second sealing interface; 133, control room; 1331, first chamber; 1332, second chamber;

[0058] 2. Clamp assembly;

[0059] 21. Support tube; 211. Clamp shaft; 2111. First semi-shaft; 2112. Second semi-shaft; 2113. Knife clearance; 212. Rotating sleeve;

[0060] 22, driving tube; 224, synchronous sleeve; 2241, synchronous channel; 225, driving member;

[0061] 23, clamp arm; 231, working part; 2311, recessed area; 2312, accommodating space; 2313, clamping section; 2314, accommodating section; 2315, connecting section; 2316, clamping gap; 232, transmission part; 233, clamping area; 234, guide groove;

[0062] 3. puncture knife; 31. puncture part; 32. control tube; 321. control part; 322. second rotation plane;

[0063] 4. Endoscope assembly; 41. Endoscope tube; 42. Guide tube; 421. Bend; 43. Adapter tube; 44. Snap-fit ​​arm. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0067] Reference Figure 1 To Attachment Fig.18 The present application discloses a stable clamping puncture clamp, comprising:

[0068] A control handle 1, on which a first driving assembly 11 is disposed;

[0069] A clamp assembly 2, which is arranged on the control handle 1 and is controlled by the first drive assembly 11;

[0070] The distal end of the clamp assembly 2 has two clamp arms 23 that cooperate with each other. The two clamp arms 23 rotate around an axis (which can be realized by the clamp shaft 211 mentioned below. The axis here should be understood as an equivalent axis in space, rather than a specific rotating shaft component). Each clamp arm 23 has a working portion 231 on one side of the axis and a transmission portion 232 on the other end. The working portions 231 of the two clamp arms 23 have a relatively close position (refer to the attached Figure 6 ) and opening position (see Appendix Figure 5 The working portions 231 of the two clamp arms 23 have a recessed area 2311 on one side facing each other. When the two clamp arms 23 are in the closed position, the recessed area 2311 on the working portions 231 of the two clamp arms 23 form an accommodating space 2312.

[0071] The clamp assembly 2 achieves clamping and releasing by switching the two clamp arms 23 to different positions. Compared with the two clamp arms 23 that are fully engaged in the prior art, the technical solution disclosed in the present application forms a accommodating space 2312 through the recess of the clamp arms 23, thereby better achieving the clamping of the target object or tissue by the clamp assembly 2. The accommodating space 2312 can also achieve stacking of the clamped objects in space, thereby providing a basis for the next operation.

[0072] For the specific configuration of the clamp arm 23, refer to the attached Figure 4 In the embodiment shown, the working portion 231 includes

[0073] A clamping section 2313, on which a tooth structure is provided, and the clamping sections 2313 of the two clamp arms 23 mesh with each other;

[0074] The accommodating section 2314 is provided with a recessed area 2311;

[0075] The connecting section 2315 of the two clamp arms 23 is used to achieve rotational fit.

[0076] The accommodating sections 2314 of the two clamp arms 23 are mutually surrounded to form an accommodating space 2312, which can provide a receiving space for the clamped object, thereby improving the clamping force while ensuring the integrity of the clamped object. In addition to being used to transmit torque, the connecting section 2315 can also be used as shown in the accompanying drawings. When the two clamp arms 23 are in the closed position, a clamping gap 2316 is provided between the connecting sections 2315 of the two clamps. Furthermore, the clamping gap 2316 is connected to the accommodating space 2312. The clamping gap 2316 can further expand the size of the accommodating space 2312. Avoid unnecessary damage caused by the clamp arms 23 being close to each other.

[0077] In the specific form of the accommodating space 2312, the recessed areas 2311 of the two clamp arms 23 are symmetrically arranged and extend in the axial direction of the installation channel. In the accompanying drawings, the shape of the accommodating space 2312 is a long hole shape, and can also be set to a variety of shapes such as waist shape, dog bone shape, rectangle, circle, etc. However, the following conditions need to be met: in the projection of the axis direction of the rotational cooperation of the two clamp arms 23, the projection shape area of ​​the accommodating space 2312 accounts for at least 25% of the projection shape area of ​​the outer contour of the two clamp arms 23. In the accompanying drawings, the projection shape area of ​​the accommodating space 2312 accounts for 28% (inclusive) or more of the projection shape area of ​​the outer contour of the two clamp arms 23.

[0078] On the outer contour of the distal end of the clamp assembly 2, referring to an embodiment, the distal ends of the clamping sections 2313 of the two clamp arms 23 converge toward each other (see attached Figure 4 As can be seen in the attached Figure 4The clamping section 2313 in the figure converges with the accommodating section 2314 in the left-right direction, and smoothly transitions with the accommodating section 2314. The distal ends that converge toward each other can be smaller in size. For example, in the treatment process for pericardial intervention, the clamp of smaller size can better perform the function of stripping or layering the pericardium.

[0079] An operating environment based on the accommodation space 2312 is given below as an example. Referring to an embodiment, a mounting channel extending from the proximal end to the distal end is provided in the clamp assembly 2; the puncture clamp further includes a puncture knife 3, and the distal end of the puncture knife 3 has a puncture position extending into the accommodation space 2312 and an initial position evacuating from the accommodation space 2312;

[0080] The control handle 1 is further provided with a second driving assembly 12 , and the puncture knife 3 is movably installed in the installation channel and is controlled by the second driving assembly 12 .

[0081] The puncture knife 3 is movably mounted in the installation channel, so that the object clamped by the clamp assembly 2 can be punctured, wherein the installation channel is arranged in the pipeline of the clamp assembly 2 and extends in the axial direction. In the embodiment shown in the drawings, the installation channel is realized by the inner space of the drive tube 22.

[0082] For the specific configuration of the second drive assembly 12, refer to the attached Fig.11 To Attachment Fig.17 In the illustrated embodiment, the second drive assembly 12 comprises:

[0083] The operating member 122 is movably mounted on the control handle 1, and the proximal end of the puncture knife 3 extends into the control handle 1 and is linked to the operating member 122;

[0084] The reset member 121 is disposed between the control handle 1 and the puncture knife 3. The reset member 121 is used to keep the puncture knife 3 in the initial position (see the attached Fig.11 );

[0085] The operating member 122 is used to drive the puncture knife 3 to overcome the reset member 121 and enter the puncture position (see the attached Fig.17 ). In the specific circumferential rotational mating position, as shown in the drawings, the operating member 122 includes an operating housing 1221 exposed to the outside of the control handle 1 and an operating rod 1222 extending to the inside of the control handle 1, and the operating rod 1222 is axially abutted against the end of the proximal end of the control tube 32 and is circumferentially released.

[0086] The axially counteracting operating rod 1222 and control tube 32 can realize the transmission of axial force, thereby driving the puncture knife 3 into or out of the puncture position. The circumferentially released operating rod 1222 and control tube 32 can prevent the operating member 1222 from transmitting the axial force to the control tube 32, thereby realizing a certain degree of safety isolation.

[0087] The operating housing 1221 is used to directly bear the force applied by medical staff. In the accompanying drawings, the operating housing 1221 is a cylindrical sleeve mounted on the proximal end of the control handle 1, which can provide guidance for the overall movement path of the operating member 122, and more importantly, can shield the part where the operating rod 1222 enters the control handle 1, providing a certain protection effect.

[0088] In the process of the operating rod 1222 extending from the proximal end to the distal end, the operating housing 1221 is slidably installed on the proximal side of the control handle 1, and the operating rod 1222 extends from the first sealing interface 131 on the proximal side end face of the control handle 1 to the inside of the control handle 1. The first sealing interface 131 can be set as a hole of a preset size opened on the proximal side end face of the control handle 1, or it can be a separately set matching disk as shown in the accompanying drawings, and the outer peripheral surface of the matching disk is provided with a thread or a clamping structure to facilitate the installation and disassembly of the control handle 1, wherein the operating rod 1222 is sealed and slidably connected with the matching disk. A control chamber 133 is provided inside the control handle 1, and the distal end of the operating rod 1222 extends into the control chamber 133. The distal end of the operating rod 1222 is provided with a first rotation plane 1223, and the first rotation plane 1223 is used to achieve axial transmission of torque with the puncture knife 3 while rotating in a circumferential release state.

[0089] Similar to the operating rod 1222, the puncture knife 3 extends from the distal end to the inside of the control handle 1. The puncture knife 3 includes a puncture portion 31 for puncturing and a control tube 32 extending to the proximal end. The control tube 32 is movably arranged in the installation channel. That is, the proximal end of the control tube 32 passes through the distal side of the control handle 1 and extends to the proximal side of the control handle 1. In the process of the control tube 32 extending from the distal end to the proximal end, a second sealing interface 132 for the control tube 32 to pass through is provided on the control chamber 133. The second sealing interface 132 can refer to the first sealing interface 131, and will not be repeated here.

[0090] The proximal end of the control tube 32 is provided with a control part 321 that cooperates with the operating member 122 (in this embodiment, the operating rod 1222 mentioned above), and the control part 321 is provided with a second rotating plane 322. The second rotating plane 322 is used to realize axial torque transmission with the operating rod 1222 and is in a released state in the circumferential direction.

[0091] Attached Fig.17 As shown in , the first rotating plane 1223 and the second rotating plane 322 are axially offset and in a released state in the circumferential direction. The first rotating plane 1223 and the second rotating plane 322 can be arranged for bidirectional transmission in the axial direction or unidirectional transmission in the axial direction. In the process of axial offset, the first rotating plane 1223 and the second rotating plane 322 can move in the axial direction of the control chamber 133 while maintaining contact.

[0092] Therefore, it is not difficult to see that the control room 133 provides a relatively closed space to realize the matching relationship and movement stroke of the puncture knife 3 and the operating member 122. Fig.11 And attached Fig.17 When the puncture knife 3 is in the initial position, the proximal side wall of the operating rod 1222 abuts against the proximal side wall of the control chamber 133; when the puncture knife 3 is in the puncture position, the distal side wall of the control part 321 abuts against the distal side wall of the control chamber 133. This setting realizes the stroke control of the puncture knife 3 (especially the puncture part 31) by restricting the movement stroke of the control part 321 by the control chamber 133, thereby achieving the following mentioned that the puncture knife 3 in the puncture position does not extend out of the distal end surface of the clamp assembly 2, reducing the safety risk.

[0093] In order to optimize the layout of the internal components of the control handle 1, other components of the second drive assembly 12 can also be arranged in the control chamber 133. Referring to an embodiment, the reset member 121 is an elastic member wound around the control tube 32 and the two ends of the elastic member are respectively pressed against the distal side wall of the control part 321 and the distal side wall of the control chamber 133. Because the control chamber 133 and the control handle 1 are fixedly arranged, in terms of mechanical transmission relationship, it can also be understood that the reset member 121 is arranged between the control part 321 and the control handle 1.

[0094] In terms of the size setting of the control chamber 133, the control chamber 133 extends in the axial direction of the control tube 32, and the proximal end of the control tube 32 and the distal end of the operating rod 1222 extend into the control chamber 133 from both sides. The opening size of the first sealing interface 131 is smaller than the radial size of the distal end of the operating rod 1222, and the opening size of the second sealing interface 132 is smaller than the radial size of the proximal end of the control tube 32. This setting can realize the control chamber 133 to constrain the movement stroke of the components, and further improve the integration of the components.

[0095] In terms of form, the control chamber 133 includes a first chamber 1331 and a second chamber 1332 which are interconnected, wherein the inner diameter of the first chamber 1331 is smaller than that of the second chamber 1332, the second chamber 1332 is used for the operation rod 1222 and the control tube 32 to cooperate and move, and at least a part of the reset member 121 is accommodated in the first chamber 1331. When the reset member 121 is configured as a coil spring as shown in the drawings, the reset member 121 has an energy storage state in which it is completely accommodated in the first chamber 1331 and a corresponding release state, and the reset member 121 in the energy storage state can drive the puncture knife 3 back to the initial position.

[0096] The driving effect of the puncture knife 3 ultimately needs to cooperate with the clamp assembly 2, and the operation of the clamp depends on the first driving assembly 11. Referring to an embodiment, the clamp assembly 2 includes:

[0097] A support tube 21, the proximal end of the support tube 21 is connected to the control handle 1, and the distal end of the support tube 21 is equipped with a clamp shaft 211;

[0098] The driving tube 22 is slidably mounted in the supporting tube 21, and the proximal end of the driving tube 22 is linked with the first driving assembly 11;

[0099] The clamp arms 23 are provided in multiple pairs, each clamp arm 23 is hinged to the clamp shaft 211, each clamp arm 23 has a working portion 231 on one side of the clamp shaft 211 and a transmission portion 232 opposite thereto, a clamping area 233 is provided between the working portions 231 of each clamp arm 23, and the transmission portion 232 is connected to the distal end of the driving tube 22;

[0100] The first driving assembly 11 includes a retaining member 114 for maintaining the relative position of the driving tube 22 with respect to the control handle 1 and a driving rocker arm 111 for driving the driving tube 22 to move. The retaining member 114 acts between the driving rocker arm 111 and the control handle 1 .

[0101] As shown in the accompanying drawings, the retaining member 114 and the reset member 121 can be set to be coaxially sleeved to improve space utilization. In actual products, the two will not interfere with each other because the side wall of the control chamber 133 separates the two to avoid unnecessary risks. In principle, the two can also be set coaxially with the same outer diameter.

[0102] In the specific structure of other components of the first drive assembly 11, combined with the attached Figure 7As shown, the first driving assembly 11 includes a driving rocker arm 111 rotatably mounted on the control handle 1, and the driving rocker arm 111 includes a driving portion 1111 for driving the driving tube 22 to move and a force-applying portion 1112 extending to the outside of the control handle 1. The driving rocker arm 111 is the actual working component of the first driving assembly 11. The first driving assembly 11 also includes a first locking assembly 112 acting between the force-applying portion 1112 and the control handle 1, and the first locking assembly 112 is used to maintain the relative position relationship between the driving rocker arm 111 and the control handle 1. The first locking assembly 112 includes a ratchet 1121 fixedly mounted on the force-applying portion 1112, a ratchet pawl 1122 rotatably mounted on the control handle 1, a locking elastic member 1123 for maintaining the position of the ratchet pawl 1122, and a locking release member 1124 for driving the ratchet pawl 1122 to release the ratchet 1121. The control handle 1 also has a fixed arm 113 opposite to the driving rocker 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 to the control handle 1 and arranged relative to the driving rocker arm 111, so as to facilitate the medical staff to hold and operate it. The first driving assembly 11 also includes a retaining member 114 for maintaining the relative position of the driving tube 22 relative to the control handle 1, and the retaining member 114 acts between the driving rocker arm 111 and the control handle 1. The driving rocker arm 111 overcomes the retaining force of the retaining member 114 during the driving process. The working process, assembly relationship and principle of each component of the first driving assembly 11 and the first locking assembly 112 can be clearly known by those skilled in the art based on the accompanying drawings, and will not be repeated here.

[0103] Regarding the driving implementation method of the first driving assembly 11 and the driving tube 22, refer to an embodiment. A driving member 225 is fixed on the driving tube 22, and the driving portion 1111 of the driving rocker arm 111 cooperates with the driving member 225 to drive the driving tube 22 to move relative to the support tube 21; in the axial direction of the driving tube 22, the driving member 225 and the driving portion 1111 are bidirectionally transmitted. The driving portion 1111 of the driving rocker arm 111 is provided with at least one driving groove 1113, and the driving member 225 is located in the driving groove 1113. In the axial direction of the driving tube 22, the two side walls of the driving groove 1113 and the driving member 225 are bidirectionally matched. In terms of the details of the driving member 225, the driving member 225 is a sphere with a radial dimension larger than the driving tube 22. The advantage of the arrangement of this embodiment is that the bidirectional transmission of the driving tube 22 can be achieved by the driving rocker arm 111, thereby avoiding the jamming of the driving tube 22 due to the force of the clamp assembly 2, and improving the working stability of the clamp assembly 2.

[0104] In the present application, the puncture knife 3 is slidably mounted in the driving tube 22. As can be seen from the accompanying drawings, the puncture knife 3 enters the puncture position from the clamp formed by the two clamp arms 23. In order to overcome the interference of the clamp shaft 211 with the motion path of the puncture knife 3, a special-shaped shaft can be selected, that is, the axis extension path of the shaft is changed to avoid it. It can also be referred to in an embodiment that the clamp shaft 211 includes a first semi-axis 2111 and a second semi-axis 2112 arranged coaxially, and there is a knife gap 2113 between the first semi-axis 2111 and the second semi-axis 2112, and the puncture knife 3 enters the puncture position via the knife gap 2113. The knife gap 2113 can realize the direct action of the puncture knife 3 on the clamping area 233 of the two clamp arms 23. The first semi-axis 2111 and the second semi-axis 2112 are respectively fixed on the side wall of the far end of the support tube 21, and are arranged relatively.

[0105] In order to further improve the coordination effect between the clamp arms 23 and the puncture knife 3, referring to an embodiment, in the axial direction of the rotation coordination of the two clamp arms 23, a guide groove 234 is provided in the middle of each clamp arm 23, and the guide groove 234 extends from the proximal side of the clamp arm 23 to the distal side, and the side edges of the puncture knife 3 located at the puncture position are respectively located in the guide grooves 234 of the two clamp arms 23. The guide groove 234 can improve the stability of the puncture knife 3. Figure 4 To Attachment Figure 6 In the embodiment shown, the distal ends of the two clamp arms 23 converge toward each other and the guide slots 234 at the corresponding positions are open on the opposite sides of the two clamp arms 23. In actual products, the puncture knife 3 in the puncture position is retracted compared to the distal end of the clamp assembly 2 to avoid unnecessary damage to the surrounding tissue. In other words, the distal end of the puncture knife 3 does not extend beyond the distal end of the guide slot 234.

[0106] In order to improve the adaptability of the puncture clamp, in some treatment cases, the clamp assembly 2 may need to rotate relative to the control handle 1. In terms of the rotation, the proximal end of the support tube 21 is provided with a rotating sleeve 212 that is rotatably connected to the control handle 1. The rotating sleeve 212 can realize the rotation of the support tube 21, thereby driving the rotation of the clamp shaft 211, and further realizing the rotation of the clamp assembly 2. At the same time, the rotation of the clamp assembly 2 can drive the driving tube 22 to rotate.

[0107] Similarly, the puncture knife 3 also requires the rotation of the synchronous clamp assembly 2. In terms of the implementation form of the rotation, it can be rotated alone or in a linked manner. The specific linkage path can be achieved by the drive tube 22 driving the puncture knife 3 to rotate; or the rotating sleeve 212 drives the drive tube 22, the drive tube 22 drives the synchronous sleeve 224, and the synchronous sleeve 224 drives the puncture knife 3. In the setting of the linked rotation, the puncture knife 3 and the second drive assembly 12 can be separated to prevent the driving force of the second drive assembly 12 from affecting the linkage. The specific separation method can be referred to the above description of "the operating member and the proximal end of the puncture knife are axially abutted and circumferentially released", which will not be repeated here.

[0108] Reference Figure 3 As shown, the puncture clamp also includes an endoscope assembly 4, which includes an endoscope tube 41 sleeved on the clamp assembly 2, and a guide line 42 for the endoscope to pass through is arranged in the endoscope tube 41, and the distal axis of the guide line 42 points to the accommodation space 2312. The guide line 42 is mainly used to realize the passing and guiding of the endoscope, especially at the distal end, which can stabilize the viewing angle of the endoscope, thereby ensuring stable observation. The guide line 42 is arranged parallel to the installation channel as a whole to ensure the access size of the instrument as a whole. The distal side of the guide line 42 is bent to point to the accommodation space 2312. In this embodiment, the guide line 42 is non-coaxially arranged with the installation channel, so the guide line 421 is actually pointed to the accommodation space, so as to guide the endoscope to stably observe the accommodation space; at the same time, the part of the bend 421 can realize the positioning of the endoscope, increase a certain movement resistance of the endoscope, and maintain the stability of the endoscope. The function of positioning the endoscope can also be achieved by partially reducing the diameter of the guide line 42. Similarly, the bend or local reduction in diameter of the positioning endoscope may also be set at any suitable position in the guiding conduit 42 .

[0109] Independent of the distal end, the proximal end of the guide conduit 42 extends in a direction away from the mounting channel and is used for the endoscope to pass through. In the accompanying drawings, the proximal end of the endoscope 1 is provided with an adapter tube 43, and the orientation of the adapter tube 43 can facilitate the entry of the endoscope, so that the guide conduit 42 in the adapter tube 43 extends smoothly to avoid affecting the movement of the endoscope, except for the bending or local reduction of the positioning endoscope.

[0110] In this embodiment, the endoscope assembly 4 can also be selectively installed. Referring to the accompanying drawings, the endoscope tube 41 is movably mounted on the support tube 21 and the proximal end of the endoscope tube 41 is engaged and positioned with the control handle 1. The movably mounted endoscope tube 41 can also isolate the possible rotation of the support tube 21, such as the case where the clamp assembly 2 mentioned above needs to be rotated.

[0111] Specifically, the control handle 1 is provided with a snap-fit ​​arm 44 that cooperates with the adapter tube 43. The snap-fit ​​arm 44 can provide a basis for setting a snap-fit ​​structure while maintaining the relative position of the endoscope tube 41, or can serve as a snap-fit ​​structure itself.

[0112] In this embodiment, the external and flexible configuration of the endoscope can effectively reduce the size of the clamp assembly 2 and the first drive assembly 11, thereby providing a basis for the flexible configuration of the puncture clamp.

[0113] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0114] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A stable clamping puncture clamp, characterized in that: include: A control handle, wherein the control handle is provided with a first drive assembly and a second drive assembly; A clamp assembly is arranged on the control handle and is controlled by the first drive assembly; the distal end of the clamp assembly has two clamp arms that cooperate with each other, and the two clamp arms rotate and cooperate with each other around an axis, each clamp arm has a working part on one side of the axis and a transmission part on the other end, and the working parts of the two clamp arms have a relative closed position and an open position; the working parts of the two clamp arms have a recessed area on the sides facing each other, and when the two clamp arms are in the closed position, the recessed areas on the working parts of the two clamp arms enclose a containing space; the working part includes: A clamping section, wherein the clamping section is provided with a toothed structure, and the clamping sections of the two clamp arms mesh with each other; An accommodating section, wherein the accommodating section is provided with the recessed area; A connecting section, wherein the connecting section of the two clamp arms is used to realize rotational cooperation; The puncture knife is controlled by the second driving assembly, and the distal end of the puncture knife has a puncture position extending into the accommodating space and an initial position withdrawn from the accommodating space.

2. The stable clamping puncture clamp according to claim 1, characterized in that: The distal ends of the clamping sections of the two clamp arms converge toward each other and smoothly transition to the accommodating section.

3. The stable clamping puncture clamp according to claim 1, characterized in that: When the two clamp arms are in the closed position, a clamping gap is provided between the connecting sections of the two clamps, and the clamping gap is communicated with the accommodating space.

4. The stable clamping puncture clamp according to claim 1, characterized in that: The clamp assembly is provided with a mounting channel extending from the proximal end to the distal end; the recessed areas of the two clamp arms are symmetrically arranged and extend in the axial direction of the mounting channel.

5. The stable clamping puncture clamp according to claim 1, characterized in that: In the projection of the axis direction of the rotational cooperation of the two pliers arms, the projection shape area of ​​the accommodating space accounts for at least 25% of the projection shape area of ​​the outer contours of the two pliers arms.

6. The stable clamping puncture clamp according to claim 1, characterized in that: The clamp assembly is provided with a mounting channel extending from the proximal end to the distal end; the puncture knife is movably mounted in the mounting channel.

7. The stable clamping puncture clamp according to claim 6, characterized in that: In the axial direction of the rotational cooperation of the two clamp arms, a guide groove is provided in the middle of each clamp arm, and the guide groove extends from the proximal side of the clamp arm to the distal side. The side edges of the puncture knife at the puncture position are respectively located in the guide grooves of the two clamp arms.

8. The stable clamping puncture clamp according to claim 7, characterized in that: The distal ends of the two clamp arms converge toward each other and the guide grooves at corresponding positions are opened on the opposite sides of the two clamp arms.

9. The stable clamping puncture clamp according to claim 1, characterized in that: The puncture clamp also includes an endoscope assembly, which includes an endoscope tube sleeved on the clamp assembly, wherein a guide pipeline for the endoscope to pass through is arranged in the endoscope tube, and the distal side axis of the guide pipeline points to the accommodating space.

10. The stable clamping puncture clamp according to claim 9, characterized in that: The puncture clamp comprises a support tube, the proximal end of the support tube is connected to the control handle, and the distal end of the support tube is equipped with a clamp shaft of the clamp assembly; The endoscope tube is movably sleeved on the support tube and the proximal end of the endoscope tube is engaged and positioned with the control handle.

11. The stable clamping puncture clamp according to claim 9, characterized in that: The distal end side of the guide pipeline is bent to point to the accommodating space.

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