Rotational synchronized puncture clamp

Abstract

The present application discloses a synchronously rotating puncture clamp, comprising: a control handle; a support tube; a drive tube; a clamp arm; a puncture knife; the support tube is rotatably mounted with the control handle, and the puncture knife is linked with the support tube in the circumferential direction. The technical solution disclosed in the application realizes the synchronous rotation of the puncture knife and the support tube through the circumferential linkage setting of the puncture knife and the support tube, provides a structural basis for freely adjusting the angle of the clamp arm, and improves the safety of the use of the puncture clamp, avoiding damage to the device and the risk of use caused by misoperation.

Description

Technical Field

[0001] The present application relates to the field of medical instruments, and in particular to a synchronously rotating puncture clamp. 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 synchronously rotating puncture clamp, comprising:

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

[0008] A support tube, the proximal end of which is connected to the control handle, and the distal end of which is provided with a clamp shaft;

[0009] A drive tube, slidably mounted in the support tube, wherein the proximal end of the drive tube is linked to the first drive assembly;

[0010] A plurality of clamp arms are provided and arranged in pairs, each clamp arm is hinged to the clamp shaft, each clamp arm has a working part located on one side of the clamp shaft and a transmission part opposite thereto, a clamping area is formed between the working parts of each clamp arm, and the transmission part is connected to the distal end of the drive tube;

[0011] A puncture knife is slidably mounted in the driving tube, the proximal end of the puncture knife is linked with the second driving assembly, and the distal end of the puncture knife has a puncture position extending into the clamping area and an initial position withdrawing from the clamping area;

[0012] The support tube and the control handle are rotatably mounted, and the puncture knife is linked to the support tube in the circumferential direction.

[0013] 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.

[0014] Optionally, the puncture clamp further comprises a linkage tube rotatably disposed between the drive tube and the puncture knife, wherein the proximal end of the drive 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.

[0015] The linkage tube realizes circumferential linkage between the proximal end of the driving tube and the distal end of the puncture knife through its own transmission.

[0016] Optionally, a radially arranged first transmission member is provided at the proximal end of the driving tube, and a second transmission member cooperating with the first transmission member is provided at the proximal end of the linkage tube.

[0017] The first transmission member and the second transmission member cooperate radially to achieve circumferential synchronization.

[0018] Optionally, the first transmission member is a positioning slot arranged on the side wall of the driving tube, and the second transmission member is a radial protrusion arranged on the linkage tube; the distal side or the proximal side of the positioning slot is provided with an open mouth, and during the assembly process of the driving tube and the linkage tube, the radial protrusion enters the positioning slot from the open mouth.

[0019] The configuration of this embodiment can improve the assembly effect and product stability while ensuring the synchronization effect.

[0020] Optionally, the intracavitary cross-section of the linkage tube is non-circular, and the cross-sectional shape of the puncture knife is complementary to the intracavitary cross-sectional shape of the linkage tube.

[0021] The linkage tube and the puncture knife realize a transmission relationship through complementary shapes, and the structure is compact.

[0022] Optionally, the distal end portion of the linkage tube is circumferentially linked with the distal end portion of the puncture knife.

[0023] Independent of the above implementation, the advantage of this embodiment is that it can improve the synchronization effect of the remote location.

[0024] Optionally, a synchronous sleeve is provided inside the distal end of the driving tube, the synchronous sleeve is fixedly connected to the driving tube and is provided with a knife exit port, the puncture knife at the initial position is located in the synchronous sleeve, and the puncture knife enters the puncture position through the knife exit port.

[0025] The synchronous sleeve realizes the distal synchronization of the driving tube and the puncture knife through the knife outlet.

[0026] Optionally, the puncture knife includes a puncture portion for puncturing and a control tube extending to the proximal end, the puncture portion is a flat structure, and the synchronization sleeve extends from the knife outlet to the proximal end to form a synchronization channel, and the shape of the synchronization channel is adapted to the shape of the puncture portion.

[0027] The synchronization channel can guide the movement of the puncture part while synchronizing the puncture knife and the drive tube.

[0028] Optionally, the proximal end of the drive tube is rotationally engaged with the first drive assembly.

[0029] The rotational fit arrangement can provide the drive tube with a freer range of motion, thereby increasing the degree of freedom of the clamp assembly.

[0030] 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-applying portion extending to the outside of the control handle.

[0031] The driving rocker arm is the actual working component of the first driving assembly.

[0032] Optionally, a driving member is fixed on the driving tube, and the driving portion of the driving rocker arm cooperates with the driving member to drive the driving tube to move relative to the supporting tube; in the axial direction of the driving tube, the driving member and the driving portion are unidirectional or bidirectional.

[0033] Different transmission methods have different technical effects.

[0034] Optionally, the second driving component includes:

[0035] A reset member, disposed between the control handle and the puncture knife, the reset member being used to keep the puncture knife at the initial position;

[0036] An operating member is movably mounted on the control handle, the proximal end of the puncture knife extends into the control handle and is linked to the operating member, and the operating member is used to drive the puncture knife to overcome the resetting member and enter the puncture position.

[0037] The second driving assembly is used to realize the movement process of the puncture knife.

[0038] Optionally, the clamp shaft includes a first semi-shaft and a second semi-shaft that are coaxially arranged, and there is a knife gap between the first semi-shaft and the second semi-shaft, and the puncture knife enters the puncture position through the knife gap.

[0039] The knife clearance enables the piercing knife to directly act on the clamping area of ​​the two clamp arms.

[0040] 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.

[0041] The guide groove can improve the stability of the piercing knife.

[0042] The technical solution disclosed in the present application realizes the synchronous rotation of the puncture knife and the support tube through the circumferential linkage setting of the puncture knife and the support tube, which provides a structural basis for freely adjusting the angle of the clamp arm while improving the safety of the use of the puncture clamp and avoiding damage to the device and risks of use caused by misoperation.

[0043] 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

[0044] Figure 1 This is a schematic diagram of the puncture clamp in the first embodiment;

[0045] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the puncture clamp;

[0046] Figure 3 for Figure 1 A schematic diagram of the internal assembly of the control handle of the puncture clamp;

[0047] Figure 4 for Figure 1 A schematic diagram of the internal cross-section of the puncture clamp;

[0048] Figure 5 This is a schematic diagram of the structure of the clamp assembly in the first embodiment;

[0049] Figure 6 for Figure 5 A schematic diagram of the coordination of the components of the clamp assembly;

[0050] Figure 7 for Figure 5 A schematic diagram of the distal ends of the clamp assembly support tube and the drive tube;

[0051] Figure 8 for Figure 5 Schematic diagram of the explosion of the distal end of the clamp assembly;

[0052] Fig. 9 It is a schematic diagram of assembling the clamp assembly and the second driving assembly in the first embodiment;

[0053] Fig.10 It is a schematic diagram of the explosion of the pipe fittings of the puncture clamp in the first embodiment;

[0054] Fig.11 This is a schematic diagram of the coordination of the internal components of the control handle of the puncture clamp in the first embodiment;

[0055] Fig.12 It is an assembly diagram of the first driving assembly in the first embodiment;

[0056] Fig.13 This is a schematic diagram of the puncture clamp in the second embodiment;

[0057] Fig.14 for Fig.13 A schematic diagram of the internal cross-section of the puncture clamp;

[0058] Fig.15 is a cross-sectional view of the internal structure of the distal end portion of the puncture clamp in the second embodiment;

[0059] Fig.16 It is an assembly diagram of the first driving assembly in the second embodiment;

[0060] Fig.17 for Fig.13 Schematic diagram of the three-dimensional structure of the puncture clamp;

[0061] Fig.18 for Fig.17 A schematic diagram of the internal assembly of the control handle of the puncture clamp;

[0062] Fig.19 for Fig.17 A schematic diagram of the internal cross-section of the puncture clamp;

[0063] Fig. 20 for Fig.17 An enlarged schematic diagram of the proximal end portion of the second drive assembly of the puncture clamp;

[0064] Fig.21 It is a schematic diagram of the explosion of the pipe fittings of the puncture clamp in the second embodiment;

[0065] Fig. 22 This is a schematic diagram of the distal end structure of the support tube and the drive tube in the second embodiment;

[0066] Fig.23 It is a top view schematic diagram of the clamp assembly in the second embodiment;

[0067] Fig.24 for Fig.13A schematic diagram of the open position of the clamp assembly of the puncture clamp;

[0068] Fig.25 for Fig.24 A schematic diagram of the position relationship of the internal components of the control handle of the puncture clamp;

[0069] Fig.26 It is a schematic diagram of the clamp assembly in the second embodiment in a closed position;

[0070] Fig. 27 A schematic diagram of the clamp assembly in the second embodiment in an open position;

[0071] Fig.28 It is a schematic diagram of the puncture knife in the second embodiment in the puncture position;

[0072] Fig.29 for Fig.28 Schematic diagram of the puncture clamp from another perspective;

[0073] Fig.30 is a schematic diagram of the puncture clamp in the second embodiment from the perspective of the clamp assembly;

[0074] Fig.31 for Fig.30 An enlarged schematic diagram of the clamp assembly in FIG.

[0075] The reference numerals in the figures are described as follows:

[0076] 1. Control handle;

[0077] 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;

[0078] 12. second driving assembly; 121. reset member; 122. operating member;

[0079] 2. Clamp assembly;

[0080] 21. Support tube; 211. Clamp shaft; 2111. First semi-shaft; 2112. Second semi-shaft; 2113. Knife clearance; 212. Rotating sleeve;

[0081] 22, driving tube; 221, linkage tube; 222, first transmission member; 2221, positioning slot; 2222, opening; 223, second transmission member; 2231, radial projection; 224, synchronous sleeve; 2241, synchronous channel; 225, driving member;

[0082] 23, clamp arm; 231, working part; 2311, recessed area; 2312, accommodating space; 232, transmission part; 233, clamping area; 234, guide groove; 235, guide entrance; 243, friction-increasing structure; 244, first anti-slip teeth; 245, second anti-slip teeth;

[0083] 3. puncture knife; 31. puncture part; 32. control tube;

[0084] 4. Endoscope assembly; 41. Endoscope tube; 42. Guide tube. DETAILED DESCRIPTION

[0085] 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.

[0086] 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.

[0087] 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.

[0088] Reference Figure 1 To Attachment Fig.31 The present application discloses a synchronously rotating puncture clamp, comprising:

[0089] A control handle 1, on which a first drive assembly 11 and a second drive assembly 12 are arranged;

[0090] 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;

[0091] 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;

[0092] 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;

[0093] The puncture knife 3 is slidably mounted in the driving tube 22, the proximal end of the puncture knife 3 is linked with the second driving assembly 12, and the distal end of the puncture knife 3 has a puncture position extending into the clamping area 233 and an initial position withdrawing from the clamping area 233;

[0094] The support tube 21 is rotatably mounted with the control handle 1 , and the puncture knife 3 is linked with the support tube 21 in the circumferential direction.

[0095] The technical solution disclosed in the present application realizes the synchronous rotation of the puncture knife 3 and the clamp assembly 2 by the circumferential linkage setting of the puncture knife 3 and the support tube 21, which provides a structural basis for freely adjusting the angle of the clamp arm 23 while improving the safety of the use of the puncture clamp and avoiding damage to the device and risks of use caused by misoperation.

[0096] For specific linkage relationships, please refer to the attached Fig.10In the illustrated embodiment, the puncture clamp further comprises a linkage tube 221 rotatably arranged between the drive tube 22 and the puncture knife 3, the proximal end of the drive 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 the circumferential linkage between the proximal end of the drive tube 22 and the distal end of the puncture knife 3 through its own transmission. In the accompanying drawings, the linkage tube 221 realizes the transmission of the driving torque through its own torsion-resistant elasticity. In terms of the circumferential torque transmission mode, the proximal end of the drive tube 22 is provided with a radially arranged first transmission member 222, and the proximal end of the linkage tube 221 is provided with a second transmission member 223 that cooperates with the first transmission member 222. The first transmission member 222 and the second transmission member 223 cooperate radially to achieve circumferential synchronization. In the accompanying drawings, the first transmission member 222 is a positioning slot 2221 provided on the side wall of the driving tube 22, and the second transmission member 223 is a radial protrusion 2231 provided on the linkage tube 221; an opening 2222 is provided on the distal end or proximal end of the positioning slot 2221, and the radial protrusion 2231 enters the positioning slot 2221 from the opening 2222 during the assembly process of the driving tube 22 and the linkage tube 221. It is not difficult to understand that the positions of the positioning slot 2221 and the radial protrusion 2231 can be interchanged in a specific product. In addition to ensuring the synchronization effect, the arrangement of this embodiment can also facilitate the assembly of the first transmission member 222 and the second transmission member 223. The mutual engagement of the first transmission member 222 and the second transmission member 223 can improve the connection effect between the linkage tube 221 and the driving tube 22, thereby improving the assembly effect and product stability. In the matching relationship between the linkage tube 221 and the puncture knife 3, as shown in the attached drawings, the intracavitary cross-section of the linkage tube 221 is non-circular, and the cross-sectional shape of the puncture knife 3 is complementary to the intracavitary cross-sectional shape of the linkage tube 221. In this embodiment, the linkage tube 221 and the puncture knife 3 realize the transmission relationship through shape complementarity, and the structure is compact. At the same time, it can be seen from the figure that in addition to the puncture knife 3, the guide pipeline 42 of the endoscope is also penetrated in the linkage tube 221, and the intracavitary cross-sectional shape of the linkage tube 221 corresponds to the guide pipeline 42 of the endoscope and is provided with a corresponding groove, and the puncture knife 3 and the guide pipeline 42 of the endoscope are mutually adapted in shape, that is, the puncture knife 3 is provided with an arc groove to avoid the guide pipeline 42 of the endoscope.

[0097] In addition to the linkage method shown above, this application also provides another linkage method, see the attached Fig.13 To Attachment Fig.31In the illustrated embodiment, the distal end of the linkage tube 221 is circumferentially linked with the distal end of the puncture knife 3. The advantage of this embodiment is that the synchronization effect of the distal position can be improved. In the specific linkage setting, as shown in the accompanying drawings, a synchronization sleeve 224 is provided inside the distal end of the driving tube 22, and the synchronization sleeve 224 is fixedly connected to the driving tube 22 and is provided with a knife outlet. The puncture knife 3 located in the initial position is located in the synchronization sleeve 224, and the puncture knife 3 enters the puncture position via the knife outlet. The synchronization sleeve 224 realizes the synchronization of the distal ends of the driving tube 22 and the puncture knife 3 through the knife outlet. The advantage of the synchronization method 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, and the synchronization deviation caused by the transmission of components is avoided, and the pipe diameter of each part can be further optimized. Furthermore, the puncture knife 3 includes a puncture portion 31 for puncturing and a control tube 32 extending to the proximal end, the puncture portion 31 is a flat structure, and 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 adapted to the shape of the puncture portion 31. The synchronization channel 2241 can guide the movement of the puncture portion 31 while synchronizing the puncture knife 3 and the drive tube 22.

[0098] In combination with the above, it is not difficult to find that the clamp assembly 2 in the present application may cause the control handle 1 to rotate. In order to avoid interference with the first drive assembly 11, referring to an embodiment, the proximal end of the drive tube 22 is rotationally matched with the first drive assembly 11. Rotational matching should be understood as the drive tube 22 being able to rotate relatively freely relative to the first drive assembly 11 without being restricted by the first drive assembly 11. This setting method can provide the drive tube 22 with a freer movement stroke, thereby increasing the degree of freedom of the clamp assembly 2. In terms of the realization of rotation, the proximal end of the support tube 21 is provided with a rotating sleeve 212 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 drive tube 22 to rotate.

[0099] Similarly, the puncture knife 3 also needs to synchronize the rotation of the 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 found in the description of "the operating member and the proximal end of the puncture knife are axially abutted and circumferentially released" below.

[0100] In the specific structure of the first driving assembly 11, 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 pawl 1122 rotatably mounted on the control handle 1, a locking elastic member 1123 for maintaining the position of the pawl 1122, and a locking release member 1124 for driving the 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.

[0101] 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 one-way transmission (refer to the attached Figure 1 To Attachment Fig.12 ) or bidirectional transmission (refer to the attached Fig.13 To Attachment Fig.31 ).

[0102] Attached Figure 1 To Attachment Fig.12In the embodiment, there is a one-way transmission between the driving member 225 and the driving portion 1111. The driving member 225 is a disc with a radial dimension larger than the driving tube 22. The driving portion 1111 presses against the distal end of the driving member 225. When the driving rocker arm 111 is forced to swing, the driving portion 1111 squeezes the driving member 225 to move and realizes the movement of the driving tube 22 relative to the control handle 1. The retaining member 114 is arranged between the driving member 225 and the control handle 1. In the accompanying drawings, the retaining member 114 is a coil spring wound around the driving tube 22, and the two ends press against the proximal end of the driving member 225 and the control handle 1 respectively. The advantage of the arrangement of this embodiment is that the structure is simple and the layout is compact.

[0103] Attached Fig.13 To Attachment Fig.31 In the embodiment, bidirectional transmission is achieved between the driving member 225 and the driving portion 1111. Compared with the previous embodiment, 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 achieve bidirectional cooperation. In terms of the details of the driving member 225, the driving member 225 is a sphere whose radial dimension is larger than the driving tube 22. The arrangement of this embodiment has the advantage that bidirectional transmission of the driving tube 22 can be achieved by driving the rocker arm 111, thereby avoiding the jamming of the driving tube 22 due to the force applied to the clamp assembly 2, and improving the working stability of the clamp assembly 2.

[0104] The implementation of the working process in the present application also depends on the movement of the puncture knife 3, and the second drive assembly 12 is used to implement the movement process of the puncture knife 3. Referring to an embodiment, the second drive assembly 12 includes:

[0105] A reset member 121 is disposed between the control handle 1 and the puncture knife 3, and the reset member 121 is used to keep the puncture knife 3 in an initial position;

[0106] The operating 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 to the operating member 122. The operating member 122 is used to drive the puncture knife 3 to overcome the reset member 121 and enter the puncture position.

[0107] As mentioned above, the installation effect of the operating member 122 needs to be able to release the rotation stroke of the puncture knife 3, that is, the operating member 122 can rotate synchronously with the puncture knife 3; or, the operating member 122 and the puncture knife 3 are rotationally matched, that is, circumferential release. In other words, the operating member 122 is rotationally mounted on the control handle 1 or axially slidably mounted on the control handle 1.

[0108] 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.

[0109] In order to further improve the coordination effect between the clamp arms 23 and the puncture knife 3, referring to an embodiment, in the direction of the axis of the rotation coordination of the two clamp arms 23 (which can be realized by the clamp shaft 211 mentioned above, and the axis here should be understood as the equivalent axis in space, rather than a specific rotating shaft component)), a guide groove 234 is provided in the middle of each clamp arm 23. The guide groove 234 can improve the stability of the puncture knife 3. Figure 8 In the embodiment shown, the guide grooves 234 at the corresponding positions are opened on the opposite sides of the two clamp arms 23. Fig.26 and attached Fig. 27 In the illustrated embodiment, the distal ends of the two clamp arms 23 converge toward each other and the guide grooves 234 at corresponding locations are open on the opposite sides of the two clamp arms 23 .

[0110] In the actual product, the puncture knife 3 in the puncture position is retracted relative 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 groove 234. Figure 8 In the illustrated embodiment, a guide inlet 235 is provided at the proximal side of the guide groove 234 .

[0111] In addition to the different rotation synchronization methods of the puncture knife 3 and the clamp assembly 2 mentioned above, and the different transmission methods of the drive member 225 and the drive part 1111, the first embodiment and the second embodiment also include differences. The differences between the first embodiment and the second embodiment are specifically explained below with reference to the accompanying drawings.

[0112] Reference Figure 1 To Attachment Fig.12As shown, a friction-enhancing structure 243 is provided on the end surface of the distal end of each clamp arm 23 of the clamp assembly 2 in the first embodiment. In the accompanying drawings, the friction-enhancing structure 243 is a plurality of protrusions provided on the end surface of the distal end of the clamp arm 23, and each protrusion is arranged in an array. In some treatment processes, the friction-enhancing structure 243 can improve the effect of the clamp assembly 2 on the target object. For example, when operating on the pericardium, the friction-enhancing structure 243 can facilitate the clamp assembly 2 to grab the pericardium attached to the myocardium; for another example, after puncturing the target object, the friction-enhancing structure 243 can facilitate the clamp assembly 2 to expand the gap of the puncture. Referring to the accompanying drawings, a first anti-slip tooth 244 is provided on the opposite side of the two clamp arms 23. A second anti-slip tooth 245 is provided on the end surface of the two clamp arms 23 facing away from each other. The first anti-slip teeth 244 can improve the gripping effect of the clamp arm 23, and the second anti-slip teeth 245 can provide a more functional mechanism basis for the clamp arm 23. For example, in the operation of expanding the gap mentioned above, the second anti-slip teeth 245 can cooperate with the edge of the gap to improve working efficiency.

[0113] Reference Figure 7 , the endoscope assembly 4 is arranged inside the clamp assembly 2. In terms of the driving difference of the puncture knife 3, the operating member 122 and the distal end of the puncture knife 3 can be set in the circumferential release mode mentioned above, or a fixed connection can be adopted. The operating member 122 under the fixed connection can not only move axially by itself to drive the puncture knife 3 to enter or exit the puncture position, but also can fine-tune the circumferential angle of the puncture knife 3 relative to the control handle 1 by rotating itself, so as to compensate for the synchronization error that may occur in the synchronization of the linkage tube 221 in the first embodiment.

[0114] Reference Fig.13 To Attachment Fig.31As shown, the distal end of the clamp assembly 2 in the second embodiment has two arms 23 that cooperate with each other, and the two arms 23 rotate and cooperate around an axis. Each arm 23 has a working part 231 on one side of the axis and a transmission part 232 on the other end. The working parts 231 of the two arms 23 have a relative close position and an open position; the working parts 231 of the two arms 23 have a recessed area 2311 on the opposite side, and the recessed areas 2311 on the working parts 231 of the two arms 23 when the two arms 23 are in the close position enclose a receiving space 2312. In addition to the difference of the clamp assembly 2, the endoscope assembly 4 in the second embodiment is arranged outside the clamp assembly 2. The endoscope assembly 4 includes an endoscope 41 sleeved on the clamp assembly 2, and a guide pipe 42 for the endoscope to pass through is arranged in the endoscope 41, and the distal side axis of the guide pipe 42 points to the receiving space 2312. The guide pipe 42 is arranged parallel to the installation channel in the clamp assembly 2. 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.

[0115] The guide conduit 42 is mainly used to realize the penetration and guidance of the endoscope, especially at the distal end, which can stabilize the viewing angle of the endoscope, thereby ensuring stable observation. The guide conduit 42 is arranged in parallel with the installation channel as a whole to ensure the overall entry size of the instrument. The distal side of the guide conduit 42 is bent to point to the accommodation space 2312. In this embodiment, the guide conduit 42 is arranged non-coaxially with the installation channel, so it is actually pointed to the accommodation space by bending to achieve the stable observation of the accommodation space by the endoscope; at the same time, the bent part can realize the positioning of the endoscope, increase the movement resistance of the endoscope to a certain extent, and maintain the stability of the endoscope. The function of positioning the endoscope can also be achieved by the local reduction of the guide conduit 42. Similarly, the bending or local reduction of the positioning endoscope can also be set at any suitable position in the guide conduit 42. In this embodiment, the endoscope assembly 4 can also be selectively installed. Referring to the accompanying drawings, the endoscope tube 41 is movably sleeved on the support tube 21 and the proximal end of the endoscope tube 41 is engaged with the control handle 1 for positioning. The movable sleeve endoscope 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. 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.

[0116] In terms of the driving difference of the puncture knife 3, in the second embodiment, in the axial direction of the puncture knife 3, the end of the proximal end of the puncture knife 3 and the end of the distal end of the operating member 122 are axially opposed and circumferentially released. Furthermore, the distal end of the operating member 122 is provided with a first rotation plane, and the proximal end of the puncture knife 3 is provided with a second rotation plane, and the first rotation plane and the second rotation plane have a matching state of axially opposed and circumferentially released. The operating member 122 can only drive the puncture knife 3 into the puncture position by its own axial movement toward the distal end. The operating member 122 has no constraints on the puncture knife 3 in the circumferential direction, achieving a certain degree of safety isolation; it can well match the design feature of the high synchronization accuracy of the drive tube 22 and the puncture knife 3 in the direct synchronization at the distal end in the second embodiment, and the puncture knife 3 can complete the synchronization process more smoothly.

[0117] 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.

[0118] 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 synchronously rotating 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 support tube, the proximal end of which is connected to the control handle, and the distal end of which is provided with a clamp shaft; A drive tube, slidably mounted in the support tube, wherein the proximal end of the drive tube is linked to the first drive assembly; A plurality of clamp arms are provided and arranged in pairs, each clamp arm is hinged to the clamp shaft, each clamp arm has a working part located on one side of the clamp shaft and a transmission part opposite thereto, a clamping area is provided between the working parts of each clamp arm, the transmission part is connected to the distal end of the drive tube, and each clamp arm is provided with a guide groove; A puncture knife is slidably mounted in the driving tube, the proximal end of the puncture knife is linked with the second driving assembly, the distal end of the puncture knife has a puncture position extending into the clamping area and an initial position withdrawing from the clamping area, and the side edges of the puncture knife at the puncture position are respectively located in the guide grooves of the two clamp arms; A linkage tube is rotatably arranged between the driving tube and the puncture knife, wherein 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 support tube and the control handle are rotatably mounted, and the puncture knife is linked to the support tube in the circumferential direction.

2. The synchronous rotation puncture clamp according to claim 1, characterized in that: The proximal end of the driving tube is provided with a radially arranged first transmission member, and the proximal end of the linkage tube is provided with a second transmission member that cooperates with the first transmission member.

3. The synchronous rotation puncture clamp according to claim 2, characterized in that: The first transmission member is a positioning groove arranged on the side wall of the driving tube, and the second transmission member is a radial protrusion arranged on the linkage tube; an open mouth is provided on the distal side or the proximal side of the positioning groove, and during the assembly process of the driving tube and the linkage tube, the radial protrusion enters the positioning groove from the open mouth.

4. The synchronous rotation puncture clamp according to claim 1, characterized in that: The intracavitary cross-section of the linkage tube is non-circular, and the cross-sectional shape of the puncture knife is complementary to the intracavitary cross-sectional shape of the linkage tube.

5. The synchronous rotation puncture clamp according to claim 1, characterized in that: The distal end portion of the linkage tube is circumferentially linked with the distal end portion of the puncture knife.

6. The synchronous rotation puncture clamp according to claim 1, characterized in that: A synchronous sleeve is provided inside the distal end of the driving tube, the synchronous sleeve is fixedly connected to the driving tube and is provided with a knife outlet, the puncture knife at the initial position is located in the synchronous sleeve, and the puncture knife enters the puncture position through the knife outlet.

7. The synchronously rotating puncture clamp according to claim 6, characterized in that: The puncture knife includes a puncture portion for puncturing and a control tube extending to the proximal end, the puncture portion is a flat structure, the synchronization sleeve extends from the knife outlet to the proximal end to form a synchronization channel, and the shape of the synchronization channel is adapted to the shape of the puncture portion.

8. The synchronous rotation puncture clamp according to claim 1, characterized in that: The proximal end of the drive tube is rotatably engaged with the first drive assembly.

9. The synchronously rotating puncture clamp according to claim 8, characterized in that: 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-applying portion extending to the outside of the control handle.

10. The synchronous rotation puncture clamp according to claim 9, characterized in that: A driving member is fixed on the driving tube, and the driving portion of the driving rocker arm cooperates with the driving member to drive the driving tube to move relative to the supporting tube; in the axial direction of the driving tube, the driving member and the driving portion are unidirectional or bidirectional.

11. The synchronous rotation puncture clamp according to claim 1, characterized in that: The second driving assembly comprises: A reset member, disposed between the control handle and the puncture knife, the reset member being used to keep the puncture knife at the initial position; An operating member is movably mounted on the control handle, the proximal end of the puncture knife extends into the control handle and is linked to the operating member, and the operating member is used to drive the puncture knife to overcome the resetting member and enter the puncture position.

12. The synchronous rotation puncture clamp according to claim 1, characterized in that: The clamp shaft comprises a first half shaft and a second half shaft which are coaxially arranged, and a knife gap is formed between the first half shaft and the second half shaft, and the puncture knife enters the puncture position through the knife gap.

13. The synchronous rotation puncture clamp according to claim 1, 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 to the distal side of the clamp arm.

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