Separation controlled puncture clamp

Abstract

The present application discloses a separately controlled puncture clamp, comprising: a control handle, a clamp assembly and a puncture knife, wherein the puncture knife is movably installed in the installation channel and is controlled by the second drive 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 when the distal end of the puncture knife is in the initial position, the puncture knife can rotate circumferentially relative to the clamp assembly. The separate control of the puncture knife and the clamp assembly in the technical solution disclosed in the present application improves the flexibility of the coordination effect of each component; at the same time, it can ensure that when the clamp assembly is in the open position, the puncture knife is prevented from entering the puncture position, thereby improving the safety of the use of the puncture clamp.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a separation-controlled 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 separation-controlled 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 clamp assembly is arranged on the control handle and is controlled by the first drive assembly. A mounting channel extending from the proximal end to the distal end is arranged in the clamp assembly. The distal end of the clamp assembly has two clamp arms that cooperate with each other. The two clamp arms rotate around an axis. Each clamp arm has a working part on one side of the axis and a transmission part on the other end. A clamping area is formed between the working parts of the two clamp arms.

[0009] The puncture knife is movably installed in the installation channel and is controlled by the second drive 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 when the distal end of the puncture knife is located at the initial position, the puncture knife can rotate circumferentially relative to the clamp assembly.

[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 control handle includes:

[0012] A support tube, the proximal end of which is connected to the control handle, and the distal end of which is mounted with a clamp shaft of the clamp assembly;

[0013] A driving tube is slidably mounted in the supporting tube, the proximal end of the driving tube is linked with the first driving assembly, and the transmission parts of the two clamp arms are respectively connected to the distal end of the driving tube;

[0014] The distal end of the driving tube is retracted compared to the distal end of the supporting tube to form an adjustment area, and the distal end of the puncture knife located in the initial position is accommodated in the adjustment area.

[0015] The arrangement of the pipe fitting provides space for adjusting the puncture knife. Meanwhile, this position is also the location where the linkage structure of the clamp assembly is arranged, which can improve space utilization and control the overall volume of the device.

[0016] Optionally, the second driving component includes:

[0017] 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;

[0018] 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.

[0019] The linkage between the puncture knife and the operating member can directly control the relative state and movement stroke of the puncture knife through the operating member, thereby improving the driving effect of the puncture knife.

[0020] Optionally, the puncture knife includes a puncture portion for puncturing and a control tube extending to the proximal end, the internal size of the adjustment area is greater than or equal to the rotation profile of the puncture portion, and the proximal end of the control tube extends to the proximal end of the control handle and is transmission-connected to the operating member.

[0021] The transmission connection includes circumferential transmission and circumferential transmission.

[0022] Optionally, the operating member includes an operating housing exposed outside the control handle and an operating rod extending into the interior of the control handle, and the operating rod is transmission-connected to the proximal end of the control tube.

[0023] The operating handle can provide a stable matching environment and improve the matching effect between the operating part and the puncture knife.

[0024] Optionally, when the puncture knife is located at the puncture position, the operating member abuts against the control handle; when the puncture knife is located at the initial position, the operating rod abuts against the control handle.

[0025] The operating member and the components on the operating member can limit the movement stroke of the puncture knife.

[0026] Optionally, when the puncture knife is located at the puncture position, the end surface portion of the distal end of the puncture knife does not exceed the end surface of the distal end of the clamp assembly.

[0027] Even in the puncture position, the outer periphery of the puncture knife is surrounded by the clamp assembly to avoid accidental injuries.

[0028] Optionally, the rotation axis of the two clamp arms is provided by a clamp shaft, and the clamp shaft includes a first semi-shaft and a second semi-shaft arranged coaxially, 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.

[0029] The knife clearance enables the piercing knife to directly act on the clamping area of ​​the two clamp arms.

[0030] Optionally, the knife clearance is greater than or equal to the maximum radial dimension of the distal end of the puncture knife.

[0031] The piercing knife can adjust its shape within the gap between cuts.

[0032] Optionally, 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, 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; a guide entrance is provided on the proximal side of the guide groove.

[0033] The guide groove can improve the stability of the piercing knife.

[0034] The separate control of the puncture knife and the clamp assembly in the technical solution disclosed in the present application improves the flexibility of the coordination effect of each component; at the same time, it can ensure that when the clamp assembly is in the open position, the puncture knife is prevented from entering the puncture position, thereby improving the safety of the puncture clamp.

[0035] 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

[0036] Figure 1 A schematic diagram of a puncture clamp in an embodiment;

[0037] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the puncture clamp;

[0038] Figure 3 for Figure 1 A schematic diagram of the internal assembly of the control handle of the puncture clamp;

[0039] Figure 4 for Figure 1 A schematic diagram of the internal cross-section of the puncture clamp;

[0040] Figure 5 This is a schematic diagram of the structure of a clamp assembly in one embodiment;

[0041] Figure 6 for Figure 5 A schematic diagram of the coordination of the components of the clamp assembly;

[0042] Figure 7 for Figure 5 A schematic diagram of the distal ends of the clamp assembly support tube and the drive tube;

[0043] Figure 8 for Figure 5 Schematic diagram of the explosion of the distal end of the clamp assembly;

[0044] Fig. 9 It is a schematic diagram of assembling the clamp assembly and the second driving assembly in one embodiment;

[0045] Fig.10 This is a schematic diagram of the coordination of the internal components of the control handle of the puncture clamp in the first embodiment;

[0046] Fig.11 It is an assembly diagram of the first drive component in one embodiment.

[0047] The reference numerals in the figures are described as follows:

[0048] 1. Control handle;

[0049] 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;

[0050] 12. second driving assembly; 121. reset member; 122. operating member; 1221. operating housing; 1222. operating rod; 1224. mounting hole;

[0051] 131, first sealing interface; 132, second sealing interface; 133, control room; 1331, first chamber; 1332, second chamber;

[0052] 2. Clamp assembly;

[0053] 21. Support tube; 211. Clamp shaft; 2111. First semi-shaft; 2112. Second semi-shaft; 2113. Knife clearance; 212. Rotating sleeve;

[0054] 22. driving pipe; 225. driving member;

[0055] 23. Clamp arm; 231. Working part; 232. Transmission part; 233. Clamping area; 234. Guide groove; 235. Guide entrance;

[0056] 243, friction-increasing structure; 244, first anti-skid tooth; 245, second anti-skid tooth;

[0057] 25. Adjustment area;

[0058] 3. puncture knife; 31. puncture part; 32. control tube;

[0059] 4. Endoscope assembly; 41. Endoscope tube. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] 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.

[0063] Reference Figure 1 To Attachment Fig.11 The present application discloses a separation-controlled puncture clamp, comprising:

[0064] A control handle 1, on which a first drive assembly 11 and a second drive assembly 12 are arranged;

[0065] The clamp assembly 2 is arranged on the control handle 1 and is controlled by the first drive assembly 11. The clamp assembly 2 is provided with a mounting channel extending from the proximal end to the distal end. 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, not a specific rotating shaft component). Each clamp arm 23 has a working part 231 on one side of the axis and a transmission part 232 on the other end. A clamping area 233 is between the working parts 231 of the two clamp arms 23.

[0066] The puncture knife 3 is movably installed in the installation channel and is controlled by the second drive assembly 12; 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. When the distal end of the puncture knife 3 is located at the initial position, the puncture knife 3 can rotate circumferentially relative to the clamp assembly 2. The installation channel is arranged in the pipeline where the clamp assembly 2 is installed 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.

[0067] The opening and closing of the clamp assembly 2 can achieve the clamping of the target object, and the treatment process can be achieved in coordination with the movement of the puncture knife 3. In the present application, the puncture knife 3 can rotate circumferentially relative to the clamp assembly 2 in the initial position, thereby adjusting its own shape and position to achieve the separation control of the puncture knife 3 and the clamp assembly 2, and improve the flexibility of the coordination effect of each component; at the same time, it can ensure that when the clamp assembly 2 is in the open position, the puncture knife 3 is prevented from entering the puncture position, thereby improving the safety of the use of the puncture clamp.

[0068] The technical solution of the present application will be explained below in order from the proximal end to the distal end of the puncture knife 3:

[0069] The proximal end of the puncture knife 3 is used to realize its own drive. The drive form of the puncture knife 3 depends on the second drive assembly 12. Fig.10 In the illustrated embodiment, the second drive assembly 12 comprises:

[0070] 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 Figure 5 And attached Fig.10 );

[0071] 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 with 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. The linkage between the puncture knife 3 and the operating member 122 can directly control the relative state and movement stroke of the puncture knife 3 through the operating member 122, thereby improving the driving effect of the puncture knife 3. In the specific linkage part, as shown in the accompanying 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 into the inside of the control handle 1. The operating rod 1222 is connected to the proximal end of the control tube 32. The operating housing 1221 is used to directly withstand the force applied by medical staff. In the accompanying drawings, the operating housing 1221 is a cylindrical shape sleeved on the proximal end of the control handle 1, which can provide guidance for the overall movement path of the operating member 122. More importantly, it can shield the part where the operating rod 1222 enters the control handle 1, providing a certain protection effect.

[0072] 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 arranged 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 mounting hole 1224, and the proximal end of the puncture knife 3 is plugged into the mounting hole 1224 and is transmission-connected. The specific connection method can be clamping, bonding, plugging, etc., and the core purpose is to achieve axial and circumferential bidirectional torque transmission.

[0073] 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.

[0074] It is understandable that the control chamber 133 provides a relatively closed space to realize the matching relationship and movement stroke between the puncture knife 3 and the operating member 122. In order to optimize the internal component layout 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 operating rod 1222 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 operating rod 1222 and the control handle 1.

[0075] 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 and the second sealing interface 132 is smaller than the radial size of the distal end of the operating rod 1222. This setting can realize the control chamber 133 to constrain the movement stroke of the components, and further improve the integration of the components. Specifically, when the puncture knife 3 is in the puncture position, the operating member 122 is against the control handle 1. Refer to the attached Fig.10 As shown in , when the puncture knife 3 is in the initial position, the operating rod 1222 abuts against the control handle 1. Specifically, the side of the proximal side of the distal end of the operating rod 1222 abuts against the control chamber 133 or the first sealing interface 131. In addition, the movement limit of the puncture knife 3 can also be limited by operating the movement limit of the housing 1221 relative to the control handle 1. In terms of form, the control chamber 133 includes a first chamber 1331 and a second chamber 1332 that are interconnected, wherein the inner diameter of the first chamber 1331 is smaller than the second chamber 1332, and 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 set as the coil spring shown in the figure, the reset member 121 has an energy storage state 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.

[0076] The distal end of the puncture knife 3 is used to achieve puncture and cooperate with the clamp assembly 2. Figure 5As shown, when the puncture knife 3 is in the puncture position, the end surface portion of the distal end of the puncture knife 3 does not exceed the end surface of the distal end of the clamp assembly 2. Even in the puncture position, the outer periphery of the puncture knife 3 is surrounded by the clamp assembly 2 to avoid accidental injury. The rotation axis of the two clamp arms 23 is provided by the clamp shaft 211. The clamp shaft 211 includes a first semi-axis 2111 and a second semi-axis 2112 coaxially arranged. There is a knife gap 2113 between the first semi-axis 2111 and the second semi-axis 2112. The puncture knife 3 enters the puncture position through the knife gap 2113. The knife gap 2113 enables the puncture knife 3 to directly act on the clamping area 233 of the two clamp arms 23. It is not difficult to see that the knife gap 2113 is greater than or equal to the maximum radial dimension of the distal end of the puncture knife 3. The puncture knife 3 can adjust its own shape within the knife gap 2113. Refer to the attached Figure 8 In the axial direction of the rotational cooperation 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. Further, a guide entrance 235 is provided on the proximal side of the guide groove 234. The interference of components caused by the circumferential misalignment of the clamp assembly 2 and the puncture knife 3 can be reduced. In addition to mechanical interference, the puncture clamp also includes an endoscope assembly 4, which includes an endoscope tube 41 arranged in the installation channel, and a guide pipeline for the endoscope to pass through is provided in the endoscope tube 41, and the distal side axis of the guide pipeline points to the clamping area 233. The endoscope tube 41 is provided with a bend or a reduction in diameter for positioning the endoscope. The built-in configuration of the endoscope in this embodiment can obtain precise visual guidance, thereby avoiding interference between components and providing a structural basis for improving treatment accuracy.

[0077] The clamp assembly 2 and the control handle 1 need to be connected to each other by a pipe. Referring to an embodiment, the control handle 1 includes:

[0078] 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 mounted with a clamp shaft 211 of the clamp assembly 2;

[0079] The driving tube 22 is slidably mounted in the supporting tube 21, the proximal end of the driving tube 22 is linked with the first driving assembly 11, and the transmission parts 232 of the two clamp arms 23 are respectively connected to the distal ends of the driving tube 22;

[0080] The distal end of the driving tube 22 is retracted compared to the distal end of the supporting tube 21 to form an adjustment area 25 , and the distal end of the puncture knife 3 in the initial position is accommodated in the adjustment area 25 .

[0081] The setting of the pipe fitting provides space for the adjustment of the puncture knife 3. At the same time, this position is also the location where the linkage structure of the clamp assembly 2 is set, which can improve the space utilization and control the overall volume of the device. In terms of the size relationship of the adjustment area 25, the puncture knife 3 includes a puncture part 31 for puncture and a control tube 32 extending to the proximal end. The internal size of the adjustment area 25 is greater than or equal to the rotation profile of the puncture part 31. The proximal end of the control tube 32 extends to the proximal end of the control handle 1 and is in transmission connection with the operating member 122. The rotation profile of the puncture part 31 should be understood as follows:

[0082] Taking the extended axial direction of the puncture knife 3 as the rotation axis, the first projection shape of the puncture portion 31 itself rotating in the circumferential direction on its own axial section, for example, the rotation profile of the puncture knife 3 shown in the figure is a circle;

[0083] The internal dimensions of the adjustment area 25 should be understood as;

[0084] The actual shape of the axial section of the adjustment area 25 at the position corresponding to the first projection shape, and the actual shape completely covers the first projection shape, can be understood from another perspective, that is, the puncture knife 3 can complete the rotation with the extended axial direction of the puncture knife 3 as the rotation axis without interference in the adjustment area 25.

[0085] In the accompanying drawings, the adjustment area 25 is arranged between the clamp assembly 2 and the driving tube 22. In order to increase the movement stroke of the clamp assembly 2, at least a portion of the circumference of the adjustment area 25 is open to allow part of the clamp assembly 2 or the transmission part 232 to move outside the adjustment area 25, so as to allow the clamp assembly 2 to achieve a larger opening; however, the puncture knife 3 is located in the adjustment area 25 during the overall movement stroke to avoid risks. The open circumference of the adjustment area 25 can also provide a larger field of view for the endoscope, thereby improving the observation effect.

[0086] As can be seen from the above, the puncture knife 3 can move axially and rotate circumferentially at the same time; similarly, the clamp assembly 2 can open and close and also rotate circumferentially at the same time.

[0087] The clamp assembly 2 can be opened and closed by the first drive assembly 11, see the attached Fig.10 To Attachment Fig.11 As shown, 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, and the retaining member 114 acts between the driving rocker arm 111 and the control handle 1.

[0088] 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.

[0089] In the specific structure of other components of the first drive assembly 11, combined with the attached Fig.11 As 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.

[0090] With reference to an embodiment of the driving implementation method of the first driving assembly 11 and the driving tube 22, 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. 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, and 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.

[0091] The rotation of the clamp assembly 2 is realized by a rotating sleeve 212. 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 drive tube 22 to rotate. It is not difficult to understand that the proximal end of the drive tube 22 is rotationally matched with the first drive assembly 11. The setting mode of rotational matching can provide a freer movement stroke for the drive tube 22, thereby improving the degree of freedom of the clamp assembly 2.

[0092] 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.

[0093] 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. Separation-controlled 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. A mounting channel extending from the proximal end to the distal end is arranged in the clamp assembly. The distal end of the clamp assembly has two clamp arms that cooperate with each other. The two clamp arms rotate around an axis. Each clamp arm has a working part on one side of the axis and a transmission part on the other end. A clamping area is formed between the working parts of the two clamp arms. A puncture knife, the puncture knife is movably installed in the installation channel and controlled by the second drive assembly, the second drive assembly includes an operating member movably installed on the control handle, the proximal end of the puncture knife extends into the control handle and is linked to the operating member; 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; the operating member is used to drive the puncture knife to enter the puncture position; when the distal end of the puncture knife is in the initial position, the puncture knife can rotate circumferentially relative to the clamp assembly; The control handle comprises: A support tube, wherein the proximal end of the support tube is connected to the control handle, and the distal end of the support tube is provided with a clamp shaft of the clamp assembly, the rotation axis of the two clamp arms is provided by the clamp shaft, and the clamp shaft includes a first semi-shaft and a second semi-shaft that are coaxially arranged, and a knife gap is formed between the first semi-shaft and the second semi-shaft, and the puncture knife enters the puncture position through the knife gap; A driving tube is slidably mounted in the supporting tube, the proximal end of the driving tube is linked with the first driving assembly, and the transmission parts of the two clamp arms are respectively connected to the distal end of the driving tube; The distal end of the driving tube is retracted compared to the distal end of the supporting tube to form an adjustment area, and the distal end of the puncture knife located in the initial position is accommodated in the adjustment area.

2. The separation-controlled 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; The operating member is used to drive the puncture knife to overcome the resetting member and enter the puncture position.

3. The separation-controlled puncture clamp according to claim 2, characterized in that: The puncture knife includes a puncture portion for puncturing and a control tube extending to the proximal end, the inner size of the adjustment area is greater than or equal to the rotation profile of the puncture portion, and the proximal end of the control tube extends to the proximal end of the control handle and is transmission-connected to the operating member.

4. The separation-controlled puncture clamp according to claim 3, characterized in that: The operating member comprises an operating shell exposed outside the control handle and an operating rod extending into the inside of the control handle, and the operating rod is transmission-connected with the proximal end of the control tube.

5. The separation-controlled puncture clamp according to claim 4, characterized in that: When the puncture knife is located at the puncture position, the operating member abuts against the control handle; when the puncture knife is located at the initial position, the operating rod abuts against the control handle.

6. The separation-controlled puncture clamp according to claim 5, characterized in that: When the puncture knife is located at the puncture position, the end surface portion of the distal end of the puncture knife does not exceed the end surface of the distal end of the clamp assembly.

7. The separation-controlled puncture clamp according to claim 1, characterized in that: The knife clearance is greater than or equal to the maximum radial dimension of the distal end of the puncture knife.

8. The separation-controlled 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 of the clamp arm to the distal side. The side edges of the puncture knife located at the puncture position are respectively located in the guide grooves of the two clamp arms; a guide entrance is provided on the proximal side of the guide groove.

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