Vascular suture retraction device

Abstract

The application discloses a kind of blood vessel suture pulling device, including adjusting base, two adjusting arms, adjusting assembly and two clamping assemblies, the adjusting base is equipped with installation channel, the installation channel is through to the both ends of the adjusting base, two the adjusting arms mirror image is equipped with the both ends of the adjusting base, and one end is slidably connected in the installation channel, the adjusting assembly is equipped with the upper of the adjusting base, and one end extends to the installation channel in the adjusting base, and simultaneously and two the adjusting arms are connected, to drive two the adjusting arms relative movement along the length direction of the adjusting base, two the clamping assemblies are respectively equipped with the other end of two the adjusting arms, to carry out clamping to blood vessel, wherein, two the clamping assemblies can be rotated along first axis.The present application can be stable to two segments of the blood vessel to be sutured and pulled, and the pulling direction can be flexibly adjusted, the flexibility and convenience of suture are improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to a vascular suture traction device. Background Technology

[0002] In animal experiments on vascular transplantation and clinical microvascular surgery, end-to-end and end-to-side anastomosis are core procedures. Current microsurgical anastomosis mainly relies on micro forceps to manually hold the vessel wall.

[0003] However, because the blood vessel wall is soft and prone to collapse and retraction, it is necessary to manually clamp and pull it repeatedly during the operation, which is difficult and requires a high level of skill from the surgeon. Repeated clamping can not only easily damage the vascular intima, but also easily lead to tearing of the vascular anastomosis, increasing the surgical risk.

[0004] Therefore, it is necessary to make further improvements to the existing technology. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the object of this invention is to provide a vascular suture traction device.

[0006] To achieve the above objectives, a vascular suture traction device according to an embodiment of the present invention includes an adjusting base, two adjusting arms, an adjusting assembly, and two clamping assemblies.

[0007] The adjustment base is provided with an installation channel that extends to both ends of the adjustment base.

[0008] The two adjusting arms are mirror images of each other at both ends of the adjusting base, and one end is slidably connected to the mounting channel.

[0009] The adjustment component is located above the adjustment base, with one end extending through the adjustment base into the mounting channel and simultaneously connected to the two adjustment arms to drive the two adjustment arms to move relative to each other along the length of the adjustment base.

[0010] The two clamping assemblies are respectively disposed at the other end of the two adjusting arms for clamping blood vessels, wherein both clamping assemblies can rotate along the first axis.

[0011] In addition, the vascular suture traction device according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the adjusting assembly includes an adjusting rod and a locking screw.

[0012] The upper surface of the adjusting base is provided with a first through hole, and the lower surface of the adjusting base is provided with a second through hole. Both the first through hole and the second through hole extend through the mounting channel. The lower end of the adjusting rod passes through the first through hole and the second through hole in sequence and can rotate along the axis of the first through hole. A gear is sleeved on the adjusting rod, and the gear is located between the two adjusting arms.

[0013] The locking screw passes through the adjusting rod to lock the adjusting rod.

[0014] Each of the two adjusting arms has a rack on its opposite surface. The rack extends along the length of the adjusting arm, and the two sides of the gear mesh with the two racks respectively.

[0015] According to one embodiment of the present invention, a limiting portion is provided on the outer surface of the adjusting rod, the limiting portion extends circumferentially along the adjusting rod, and the limiting portion is attached to the upper surface of the adjusting base.

[0016] The bottom surface of the adjusting base is provided with a connecting cap, the connecting cap is provided with a connecting post, the bottom end of the adjusting rod is provided with a connecting hole, and the connecting post is threaded into the connecting hole so that the connecting cap and the limiting part restrict the adjusting post within the first through hole and the second through hole.

[0017] According to one embodiment of the present invention, the upper surface of the adjusting rod is provided with a mounting hole, the mounting hole including a threaded section and a planar section arranged sequentially from top to bottom, the side wall of the planar section of the mounting hole is provided with a radial hole, and a pressing member is slidably arranged in the two radial holes respectively.

[0018] The locking screw is installed in the threaded section, and the lower end of the locking screw is provided with a driving part. When the locking screw is adjusted downward, the driving part drives the two pressing members to move outward of the adjusting rod, thereby pressing them against the inner wall of the second through hole to fix the position of the adjusting rod.

[0019] According to one embodiment of the present invention, both clamping assemblies include a mounting rod and a gripper.

[0020] The other end of each adjusting arm is provided with a mounting platform, and the mounting platform is provided with a vertical hole. The mounting rod passes through the vertical hole and can rotate along the first axis.

[0021] The gripper is foldable and located at the lower end of the mounting rod for clamping the blood vessel.

[0022] According to one embodiment of the present invention, the mounting rod includes a rod body, a locking part, and a spring.

[0023] The rod is inserted into the vertical hole, and its lower end extends to the bottom of the mounting platform. The lower part of the rod is provided with a stop.

[0024] The locking part is connected to the upper end of the rod body. The locking part is a regular polygon. The mounting platform is provided with a limiting groove that matches the outer contour of the locking part. The limiting groove and the vertical hole are coaxially arranged.

[0025] The spring is sleeved on the lower part of the rod and clamped between the stop and the mounting platform.

[0026] According to one embodiment of the present invention, the gripper includes two gripper bodies, a connecting portion and a drive rod.

[0027] The two claw bodies are mirror images of each other on both sides of the mounting rod, and their upper ends are rotatably connected to the mounting rod. A transmission part is pivotally connected to the middle of the opposite side of each of the two claw bodies.

[0028] The connecting part is located between the two transmission parts, and its two ends are pivotally connected to the other ends of the two transmission parts respectively.

[0029] The mounting rod is provided with a threaded hole that passes through both the upper and lower ends of the mounting rod. The drive rod is screwed into the threaded hole, and the lower end of the drive rod is connected to the connecting part. By rotating the drive rod, the connecting part is raised and lowered, thereby causing the two claw bodies to open and close.

[0030] According to one embodiment of the present invention, both claw bodies include, from top to bottom, a top hinge section, an outwardly inclined arm extending downwards, an obtuse-angled bending section protruding outwards, an inwardly inclined clamping arm extending downwards, and a horizontal clamping section formed by the inward horizontal bending of the bottom end of the inwardly inclined clamping arm.

[0031] According to one embodiment of the present invention, the top of the drive rod is provided with a rotating part, the diameter of which is larger than the diameter of the drive rod, for driving the drive rod to rotate.

[0032] According to one embodiment of the present invention, the upper and / or lower surfaces of the two adjusting arms are provided with sliding portions, the sliding portions extending along the length direction of the adjusting arms, and the top and / or bottom walls of the mounting channel are provided with sliding grooves that slide in cooperation with the sliding portions, the sliding grooves extending along the length direction of the adjusting base.

[0033] According to the embodiments of the present invention, the vascular suture traction device, through the cooperation of the adjusting base, the mounting channel and the adjusting arm sliding in the mounting channel, drives the two adjusting arms to move relative to each other along the length direction of the adjusting base using the adjusting components. This allows for easy adjustment of the distance between the two clamping components, enabling them to pull the two blood vessels closer together after clamping the blood vessels, facilitating suture. Both clamping components can rotate along the first axis, allowing the surgeon to flexibly adjust the traction direction according to the actual blood vessel direction, incision location and suture angle requirements when performing end-to-end or end-to-side anastomosis, thus improving the flexibility and convenience of suture.

[0034] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is an exploded view of the overall structure in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the adjusting base in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the adjusting rod in an embodiment of the present invention; Figure 5 This is a schematic diagram of the overall structure of the clamping component in an embodiment of the present invention; Figure 6 This is a cross-sectional view of the overall structure of the clamping assembly in an embodiment of the present invention; Figure 7 This is a schematic diagram of the overall structure of the adjusting arm in an embodiment of the present invention; Figure 8 This is a cross-sectional view of the mounting platform in an embodiment of the present invention; Figure 9 This is a schematic diagram of the overall structure of the claw body in an embodiment of the present invention; Figure 10 This is a schematic diagram of the overall structure of the connecting cap in an embodiment of the present invention; Figure 11 This is a schematic diagram of the overall structure of another embodiment of the present invention; Figure 12 This is a schematic diagram of the overall structure of another embodiment of the present invention.

[0037] Icon labels: Adjusting base 10; Install channel 11; Slide 111; First through hole 12; Second through hole 13; Adjusting arm 20; Rack 21; Mounting platform 22; Vertical hole 221; Limiting groove 222; Sliding part 23; Adjustment component 30; Adjusting rod 31; Limiting part 311; Connector cap 312; Connecting post 313; Connection hole 314; Mounting hole 315; Thread section 3151; Planar segment 3152; Extruded part 316; Gear 32; Locking screw 33; Drive unit 331; Clamping component 40; Mounting rod 41; Rod 411; Stop part 4111; Locking part 412; Spring 413; Threaded hole 414; Gripper 42; Claw body 421; Top hinge section 4211; Outward tilt arm 4212; Obtuse angle bend segment 4213; Inclined clamp arm 4214; Horizontal clamping section 4215; Transmission part 422; Connecting part 423; Drive lever 424; Rotating part 425.

[0038] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The vascular suture traction device of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] Reference Figures 1 to 12 As shown, the vascular suture traction device provided according to an embodiment of the present invention includes an adjusting base 10, two adjusting arms 20, an adjusting assembly 30, and two clamping assemblies 40.

[0046] The adjusting base 10 is provided with an installation channel 11, which extends to both ends of the adjusting base 10. Specifically, the adjusting base 10 is generally a hollow cuboid structure, and its interior defines the installation channel 11 extending to both ends.

[0047] The two adjusting arms 20 are mirror images of each other at both ends of the adjusting base 10, and one end is slidably connected to the mounting channel 11.

[0048] The adjustment component 30 is located above the adjustment base 10, and one end extends through the adjustment base 10 into the mounting channel 11, and is connected to the two adjustment arms 20 at the same time, so as to drive the two adjustment arms 20 to move relative to each other along the length direction of the adjustment base 10.

[0049] The two clamping components 40 are respectively disposed at the other end of the two adjusting arms 20 for clamping blood vessels, wherein both clamping components 40 can rotate along the first axis.

[0050] Based on the above, by cooperating with the adjusting base 10, the mounting channel 11, and the adjusting arm 20 sliding in the mounting channel 11, the adjusting component 30 drives the two adjusting arms 20 to move relative to each other along the length of the adjusting base 10. This allows for easy adjustment of the distance between the two clamping components 40, enabling them to pull the two blood vessels closer together after clamping the blood vessels, facilitating suturing. Both clamping components 40 can rotate along the first axis, allowing doctors to flexibly adjust the pulling direction according to the actual blood vessel direction, incision location, and suturing angle during end-to-end or end-to-side anastomosis, thus improving the flexibility and convenience of suturing.

[0051] Preferably, in one embodiment of the present invention, the adjusting assembly 30 includes an adjusting rod 31 and a locking screw 33.

[0052] The upper surface of the adjusting base 10 is provided with a first through hole 12, and the lower surface of the adjusting base 10 is provided with a second through hole 13. Both the first through hole 12 and the second through hole 13 extend to the mounting channel 11. The lower end of the adjusting rod 31 passes through the first through hole 12 and the second through hole 13 in sequence, and can rotate along the axis of the first through hole 12. A gear 32 is sleeved on the adjusting rod 31, and the gear 32 is located between the two adjusting arms 20.

[0053] The locking screw 33 passes through the adjusting rod 31 to lock the adjusting rod 31.

[0054] Each of the two adjusting arms 20 has a rack 21 on its opposite surface, the rack 21 extending along the length of the adjusting arm 20, and the gear 32 meshes with the two racks 21 on its two sides respectively. Specifically, the rack 21 is a straight tooth structure extending along the length of the adjusting arm 20, and can be directly integrally formed on the side of the adjusting arm 20, or it can be fastened to the opposite surface of the adjusting arm 20 by welding or screws. Preferably, a wear-resistant bushing is provided between the adjusting rod 31 and the first through hole 12 and the second through hole 13, and the gear 32 and rack 21 are made of medical-grade stainless steel or high-hardness wear-resistant engineering plastic to meet the rust prevention and wear resistance requirements of medical devices and extend their service life.

[0055] Thus, through the structure of gear 32 meshing with racks 21 on both sides, when the adjusting rod 31 is rotated, the adjusting arms 20 on both sides can achieve precise synchronous reverse (relative) movement. This not only ensures a smooth adjustment process but also guarantees that the center point between the two sets of clamping components 40 is always kept on the central axis of the device, effectively avoiding the problem of uneven force on the blood vessel caused by unilateral movement. The adjusting rod 31 passes through the first through hole 12 and the second through hole 13 in sequence, and is supported by the upper and lower surfaces of the base at two points, which greatly improves the stability of the adjusting rod 31 when rotating and prevents shaking. By setting the locking screw 33, the doctor can quickly lock the adjusting rod 31 after adjusting the two adjusting arms 20 to the required traction distance, preventing the adjusting rod 31 from rotating accidentally due to touch or micro-vibration during the operation, ensuring the constant vascular traction tension, and effectively improving the safety and reliability of the surgical operation.

[0056] Preferably, in one embodiment of the present invention, a limiting portion 311 is provided on the outer surface of the adjusting rod 31. The limiting portion 311 extends circumferentially along the adjusting rod 31 and fits against the upper surface of the adjusting base 10. Specifically, the limiting portion 311 may be an annular flange or a retaining ring integrally formed on the adjusting rod 31.

[0057] The bottom surface of the adjusting base 10 is provided with a connecting cap 312, the connecting cap 312 is provided with a connecting post 313, the bottom end of the adjusting rod 31 is provided with a connecting hole 314, and the connecting post 313 is threaded into the connecting hole 314 so that the connecting cap 312 and the limiting part 311 restrict the adjusting post within the first through hole 12 and the second through hole 13.

[0058] Thus, by pressing down and blocking the top limiting part 311 and pulling up the bottom connecting cap 312, a limiting fit is formed between the upper and lower clamps, which effectively prevents the adjusting rod 31 from moving up and down during rotation, completely eliminating the hidden danger of the adjusting rod 31 accidentally coming out of the installation channel 11, ensuring the structural stability and operational safety of the device during the operation, and facilitating installation and disassembly.

[0059] Accordingly, during assembly, the operator passes the adjusting rod 31 through the first through hole 12 and the second through hole 13 from above the adjusting base 10, so that the limiting part 311 fits against the upper surface of the adjusting base 10. Then, the connecting cap 312 is aligned with the bottom end of the adjusting rod 31 from the bottom of the adjusting base 10, and the connecting post 313 is screwed into the connecting hole 314 and tightened. At this time, the connecting cap 312 exerts an upward pulling force on the bottom end of the adjusting rod 31 through the connecting post 313, while the limiting part 311 abuts against the upper surface of the base to exert a downward supporting force. The two work together at the upper and lower ends to firmly restrict the adjusting rod 31 within the first through hole 12 and the second through hole 13, so that it can only rotate around its own axis and cannot move up and down or come out along the axial direction.

[0060] Preferably, in one embodiment of the present invention, the upper surface of the adjusting rod 31 is provided with a mounting hole 315, the mounting hole 315 includes a threaded section 3151 and a flat section 3152 arranged sequentially from top to bottom, the side wall of the flat section 3152 of the mounting hole 315 is provided with a radial hole, and the two radial holes are respectively slidably provided with a pressing member 316.

[0061] The locking screw 33 is installed in the threaded section 3151. The lower end of the locking screw 33 is provided with a driving part 331. When the locking screw 33 is adjusted downward, the driving part 331 drives the two pressing members 316 to move outward of the adjusting rod 31, thereby pressing against the inner wall of the second through hole 13 to fix the position of the adjusting rod 31.

[0062] It should be noted that the drive unit 331 is tapered, wider at the top and narrower at the bottom. This design utilizes the principle of converting the thrust of the tapered surface into radial clamping force. Only a small turning torque is needed to generate significant friction on the inner wall of the second through hole 13, achieving a powerful lock. Furthermore, once locked, it is not easily loosened by vibration, exhibiting extremely high stability. The symmetrical radial movement of the two pressing members 316 ensures that the radial pressure on the adjusting rod 31 remains balanced during locking, effectively preventing deformation of the adjusting rod 31 due to unilateral force. The clamping force acts directly on the circular wall of the second through hole 13, without damaging the adjusting base 10. Simultaneously, the locking mechanism is completely integrated within the mounting hole 315 of the adjusting rod 31, without occupying additional external space.

[0063] Preferably, the extruder 316 is a spherical steel ball or a cylindrical slider, and the opening of the radial hole is provided with an inwardly tapering flange (or a tapering process is adopted) to prevent the extruder 316 from completely coming out of the radial hole.

[0064] Preferably, in one embodiment of the present invention, both clamping assemblies 40 include a mounting rod 41 and a gripper 42.

[0065] Each of the adjusting arms 20 has a mounting platform 22 at its other end. The mounting platform 22 has a vertical hole 221, through which the mounting rod 41 passes and can rotate along the first axis. Specifically, each of the adjusting arms 20 has a mounting platform 22 at its other end (i.e., the end furthest from the adjusting base 10). The mounting platform 22 is preferably a rectangular or cylindrical block protruding from the end of the adjusting arm 20. A vertical hole 221 is formed through the mounting platform 22 in the vertical direction, and the central axis of this hole 221 is the first axis. Specifically, the gripper 42 has a clamp-like structure, with its top end connected to the mounting rod 41 and its lower end forming two symmetrical clamping surfaces for clamping blood vessels.

[0066] The gripper 42 is foldably disposed at the lower end of the mounting rod 41 for clamping the blood vessel.

[0067] Thus, by designing the mounting rod 41 to rotate around the first axis within the vertical hole 221, the clamp 42 can flexibly adjust the pulling direction according to the specific location and direction of the vascular anastomosis and the surgeon's suturing habits. The openable and closable clamp 42 structure can adaptively clamp blood vessels of different thicknesses and wall thicknesses, and by controlling the opening and closing force, excessive pressure can be avoided, reducing damage to the vascular intima and improving the success rate of vascular anastomosis.

[0068] Preferably, in one embodiment of the present invention, the mounting rod 41 includes a rod body 411, a locking part 412, and a spring 413.

[0069] The rod 411 passes through the vertical hole 221, and its lower end extends to the bottom of the mounting platform 22. The lower part of the rod 411 is provided with a stop 4111.

[0070] The locking part 412 is connected to the upper end of the rod 411. The locking part 412 is a regular polygon. The mounting platform 22 is provided with a limiting groove 222 that matches the outer contour of the locking part 412. The limiting groove 222 and the vertical hole 221 are coaxially arranged. Specifically, the cross-section of the locking part 412 is a regular polygon (such as a regular hexagon or a regular quadrilateral).

[0071] The spring 413 is sleeved on the lower part of the rod 411 and is clamped between the stop part 4111 and the mounting platform 22.

[0072] Thus, when the pulling angle needs to be adjusted, the operator only needs to gently lift the rod 411 upwards with their finger. At this time, the rod 411 drives the locking part 412 to move upwards, compressing the spring 413 below, so that the locking part 412 completely disengages from the limiting groove 222. After the locking part 412 disengages from the limiting groove 222, the rod 411 returns to its free state and can rotate freely 360 degrees continuously within the vertical hole 221 along the first axis. After adjusting to the desired pulling angle, the operator lowers the rod 411 (or directly releases their finger). Under the pre-compression force of the spring 413, the spring 413 pushes downwards against the stop part 4111, causing the rod 411 to return to its original position. The locking part 412 at the top automatically engages again in the limiting groove 222, completing the angle locking.

[0073] Preferably, in one embodiment of the present invention, the gripper 42 includes two gripper bodies 421, a connecting portion 423, and a drive rod 424.

[0074] The two claw bodies 421 are mirror images of each other on both sides of the mounting rod 41, and their upper ends are rotatably connected to the mounting rod 41. A transmission part 422 is pivotally connected to the middle of the opposite side of each of the two claw bodies 421.

[0075] The connecting part 423 is disposed between the two transmission parts 422, and its two ends are pivotally connected to the other ends of the two transmission parts 422 respectively.

[0076] The mounting rod 41 is provided with a threaded hole 414, which passes through the upper and lower ends of the mounting rod 41. The drive rod 424 is screwed into the threaded hole 414. The lower end of the drive rod 424 is connected to the connecting part 423, so that by rotating the drive rod 424, the connecting part 423 can be raised and lowered, thereby driving the two claw bodies 421 to open and close.

[0077] Thus, by utilizing the linkage mechanism formed by the two transmission parts 422 and the connecting part 423, the linear motion of the drive rod 424 is converted into the symmetrical pivoting motion of the two claw bodies 421. This ensures that the force on both sides of the gripper 42 is absolutely uniform when it opens and closes, avoiding uneven clamping force on one side that could lead to twisting or damage to the blood vessel wall. The screw thread drive structure utilizes the self-locking characteristic of the screw drive itself. After the operator stops rotating the drive rod 424, the gripper 42 can stably maintain its current opening and closing position, preventing accidental release due to the elastic reaction force of the blood vessel wall itself, greatly ensuring the safety of intraoperative traction.

[0078] Preferably, in one embodiment of the present invention, both claw bodies 421 include, from top to bottom, a top hinge section 4211, an outwardly inclined arm 4212 extending outwardly and downward, an obtuse-angled bending section 4213 protruding outward, an inwardly inclined clamping arm 4214 extending inwardly and downward, and a horizontal clamping section 4215 formed by bending the bottom end of the inwardly inclined clamping arm 4214 inwardly.

[0079] Thus, by forming a horizontal clamping section 4215 through the inward horizontal bending of the bottom end of the inward-tilting clamping arm 4214, the clamping surfaces on both sides can remain parallel to each other when the clamping claws 42 are closed, achieving face-to-face clamping. This effectively avoids local stress concentration and compression damage to the blood vessel wall caused by traditional sharp-angled or oblique-angled clamping claws 42, protecting the fragile vascular intima. The obtuse-angled bending section 4213 protruding outward acts like a lever fulcrum (elbow), significantly increasing the lever arm; combined with the bending angles of the outward-tilting arm 4212 and the inward-tilting clamping arm 4214, a greater clamping force can be generated under the same driving force, and the clamping process is smooth, effectively preventing slippage of soft blood vessels during traction.

[0080] Preferably, the two claw bodies 421 are integrally stamped and bent sheet metal parts, and the inner side of the horizontal clamping section 4215 is preferably provided with anti-slip texture to increase the friction when clamping blood vessels.

[0081] Preferably, in one embodiment of the present invention, the top of the drive rod 424 is provided with a rotating part 425, the diameter of the rotating part 425 being larger than the diameter of the drive rod 424, for driving the drive rod 424 to rotate.

[0082] Specifically, the rotating part 425 can be integrally formed on the top of the drive rod 424, or it can be fixedly installed on the upper end of the drive rod 424 by interference fit or fastening screws. Preferably, the rotating part 425 is a cylindrical, plum blossom-shaped, or spherical knob structure. The outer peripheral surface of the rotating part 425 is preferably provided with anti-slip texture (such as knurling, anti-slip vertical grooves, or grooves) to increase the friction between the fingers and the rotating part 425. During assembly and use, since the diameter of the rotating part 425 is significantly larger than that of the drive rod 424, its outer edge extends beyond the diameter range of the drive rod 424, forming a distinct cap-shaped force application part. The operator's fingers pinch or turn the rotating part 425, and by utilizing the longer lever arm (i.e., the lever principle) resulting from its larger diameter, the operator can easily and effortlessly rotate the slender drive rod 424, thereby driving the drive rod 424 to move up and down precisely within the threaded hole 414.

[0083] Preferably, in a preferred embodiment of the present invention, the other ends of the mounting platform 22 and the adjusting arm 20 can be rotatably connected and locked by a locking member. Specifically, the other end (far end) of the adjusting arm 20 is provided with a transverse or longitudinal pivot hole, and the mounting platform 22 is rotatably connected to the pivot hole by a pivot or pin, so that the mounting platform 22 can rotate around a second axis (such as a horizontal axis or a vertical axis). The locking member is preferably a screw, a resilient locating pin, or a ratchet buckle, which passes between the mounting platform 22 and the adjusting arm 20 to lock their positions after the angle is adjusted.

[0084] In a further preferred embodiment of the present invention, the number of rotating connections can be flexibly configured to meet the needs of end-to-end vascular suturing. Specifically, the rotating connection can be provided only at the other end of one of the adjusting arms 20, so that the clamping assembly 40 on that side has an angle adjustment function, while the other side remains fixed; or the rotating connection can be provided at the other end of both adjusting arms 20, so that the clamping assemblies 40 on both sides can be adjusted independently.

[0085] In this embodiment, during end-to-side vascular anastomosis surgery (e.g., suturing the end of a donor vessel to the sidewall of a recipient vessel), the angles of the two vessels vary due to their "T" or "Y" shaped intersections. The operator, as needed, loosens the locking mechanism on the corresponding side, rotates the mounting platform 22 around its axis, and aligns the gripping direction of the jaws 42 parallel to the direction of the target vessel or at the optimal suturing angle. Then, the locking mechanism is tightened again to securely lock the mounting platform 22. For unilateral adjustment, one side provides fixed base support while the other side allows for flexible adjustment; for bilateral adjustment, maximum angular freedom is provided to accommodate more complex anatomical positions. Alternatively, the mounting platform 22 and the adjusting arm 20 can be connected using a universal ball joint structure to achieve even greater freedom of movement.

[0086] Preferably, in one embodiment of the present invention, the upper and / or lower surfaces of both adjusting arms 20 are provided with sliding portions 23, the sliding portions 23 extending along the length direction of the adjusting arms 20, and the top and / or bottom walls of the mounting channel 11 are provided with sliding grooves 111 that slide with the sliding portions 23, the sliding grooves 111 extending along the length direction of the adjusting base 10. Specifically, the sliding portion 23 is preferably a guide rib (such as a T-shaped rib or a dovetail rib) protruding from the surface of the adjusting arm 20, and the sliding groove 111 is a groove (such as a T-shaped groove or a dovetail groove) adapted to the shape of the sliding portion 23. By embedding the sliding portion 23 into the sliding groove 111, the adjusting arm 20 is strictly limited within the mounting channel 11. In this embodiment, if the adjusting arm 20 has a sliding part 23 only on its upper surface, its lower surface slides directly against the bottom wall of the mounting channel 11, serving as a unidirectional guide and support. If both the upper and lower surfaces of the adjusting arm 20 have sliding parts 23, the top and bottom walls of the mounting channel 11 also have corresponding grooves 111, forming a double-guided structure. Preferably, a wear-resistant pad or medical grease is provided between the sliding part 23 and the groove 111 to reduce friction and prevent direct metal-to-metal friction from causing wear and abnormal noise.

[0087] Thus, through the cooperation between the sliding part 23 and the slide groove 111, a precise linear guide is provided for the movement of the adjusting arm 20 in the installation channel 11, which completely avoids the phenomenon of slight tilting or jamming of the adjusting arm 20 due to uneven force on one side during the movement, and ensures the high precision of the clamping assembly 40 spacing adjustment.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vascular suture traction device, characterized in that, include: An adjusting base, wherein the adjusting base is provided with an installation channel extending to both ends of the adjusting base; Two adjusting arms are mirror images of each other at both ends of the adjusting base, and one end is slidably connected to the mounting channel. An adjustment assembly is disposed above the adjustment base, with one end extending through the adjustment base into the mounting channel and simultaneously connected to the two adjustment arms to drive the two adjustment arms to move relative to each other along the length direction of the adjustment base. Two clamping assemblies are respectively disposed at the other end of the two adjusting arms for clamping blood vessels, wherein both clamping assemblies can rotate along a first axis.

2. The vascular suture traction device according to claim 1, characterized in that, The adjustment component includes: An adjusting rod is provided. The upper surface of the adjusting base is provided with a first through hole, and the lower surface of the adjusting base is provided with a second through hole. Both the first through hole and the second through hole extend to the mounting channel. The lower end of the adjusting rod passes through the first through hole and the second through hole in sequence and can rotate along the axis of the first through hole. A gear is sleeved on the adjusting rod and the gear is located between the two adjusting arms. A locking screw, which passes through the adjusting rod, is used to lock the adjusting rod. Each of the two adjusting arms has a rack on its opposite surface. The rack extends along the length of the adjusting arm, and the two sides of the gear mesh with the two racks respectively.

3. The vascular suture traction device according to claim 2, characterized in that, The outer surface of the adjusting rod is provided with a limiting part, which extends circumferentially along the adjusting rod and fits against the upper surface of the adjusting base; The bottom surface of the adjusting base is provided with a connecting cap, the connecting cap is provided with a connecting post, the bottom end of the adjusting rod is provided with a connecting hole, and the connecting post is threaded into the connecting hole so that the connecting cap and the limiting part restrict the adjusting post within the first through hole and the second through hole.

4. The vascular suture traction device according to claim 2, characterized in that, The upper surface of the adjusting rod is provided with a mounting hole, which includes a threaded section and a flat section arranged sequentially from top to bottom. The side wall of the flat section of the mounting hole is provided with a radial hole, and a pressing element is slidably arranged in each of the two radial holes. The locking screw is installed in the threaded section, and the lower end of the locking screw is provided with a driving part. When the locking screw is adjusted downward, the driving part drives the two pressing members to move outward of the adjusting rod, thereby pressing them against the inner wall of the second through hole to fix the position of the adjusting rod.

5. The vascular suture traction device according to claim 1, characterized in that, Both clamping components include: The mounting rod and the other end of the adjusting arm are each provided with a mounting platform. The mounting platform is provided with a vertical hole, and the mounting rod passes through the vertical hole and can rotate along the first axis. The gripper is detachable and located at the lower end of the mounting rod for clamping the blood vessel.

6. The vascular suture traction device according to claim 5, characterized in that, The mounting rod includes: A rod body, which passes through the vertical hole and extends to the bottom of the mounting platform, and the lower part of the rod body is provided with a stop; A locking part is connected to the upper end of the rod body. The locking part is a regular polygon. A limiting groove adapted to the outer contour of the locking part is provided on the mounting platform. The limiting groove and the vertical hole are coaxially arranged. A spring is sleeved on the lower part of the rod and clamped between the stop and the mounting platform.

7. The vascular suture traction device according to claim 5, characterized in that, The gripper includes: Two claw bodies are mirror images of each other on both sides of the mounting rod, and their upper ends are rotatably connected to the mounting rod. A transmission part is pivotally connected to the middle of the opposite side of each claw body. A connecting part is provided between the two transmission parts, and both ends are pivotally connected to the other ends of the two transmission parts respectively; The drive rod has a threaded hole that passes through both the upper and lower ends of the mounting rod. The drive rod is screwed into the threaded hole, and the lower end of the drive rod is connected to the connecting part. By rotating the drive rod, the connecting part is raised and lowered, thereby causing the two claw bodies to open and close.

8. The vascular suture traction device according to claim 7, characterized in that, Both claws, from top to bottom, include a top hinge section, an outwardly inclined arm extending downwards, an obtuse-angled bend section protruding outwards, an inwardly inclined clamping arm extending downwards, and a horizontal clamping section formed by the inward horizontal bending of the bottom end of the inwardly inclined clamping arm.

9. The vascular suture traction device according to claim 7, characterized in that, The top of the drive rod is provided with a rotating part, the diameter of which is larger than the diameter of the drive rod, for driving the drive rod to rotate.

10. The vascular suture traction device according to claim 1, characterized in that, The upper and / or lower surfaces of both adjusting arms are provided with sliding portions, which extend along the length of the adjusting arm. The top and / or bottom walls of the mounting channel are provided with sliding grooves that slide with the sliding portions, which extend along the length of the adjusting base.

Images