A venous valve surgery scissors

Abstract

The utility model relates to the field of medical operation, more particularly to a kind of venous valve operation scissors. Including: first half cut unit, first half cut unit includes first handle, first support rod, first shear blade;First support rod one end with first handle fixed one end fixed connection, other end with first shear blade one end fixed connection;Second half cut unit, second half cut unit includes second handle, second support rod, second shear blade;Second support rod one end with second handle one end fixed connection, other end with second shear blade one end fixed connection;First shear blade and second shear blade rotation connection;Guiding unit, guiding unit with the end of first shear blade away from first support rod is connected;Guiding unit is spaced apart from second shear blade.Such then solved the existing operation scissors when cutting blood vessel wall there is possibly punctured or inappropriately cut open to be repaired valve, and then possibly cause valve operation failure problem.

Description

Technical Field

[0001] This utility model relates to the field of medical surgery, and more specifically, to a surgical scissor for venous valve surgery. Background Technology

[0002] Vascular surgery scissors are high-precision instruments specifically designed for venous valve surgery. They are primarily used for precisely cutting blood vessels and safely exposing the valves. When cutting a blood vessel, a small incision is first made. Then, the cutting tip of the surgical scissors is inserted into the incision to cut the vessel wall. However, existing surgical scissors, due to their sharp cutting tips, may be prone to improper operation when inserted into the blood vessel. Inaccurate insertion depth can lead to the tip puncturing the valve to be repaired, or even improperly cutting the entire valve, potentially causing the entire surgery to fail. Utility Model Content

[0003] To address the problem that existing surgical scissors may puncture or improperly cut the valve to be repaired when cutting the blood vessel wall, potentially leading to valve surgery failure, this utility model provides a venous valve surgical scissor, comprising:

[0004] The first half-shear unit includes a first handle, a first support rod, and a first scissor blade; one end of the first support rod is fixedly connected to one end of the first handle, and the other end is fixedly connected to one end of the first scissor blade.

[0005] The second half-shear unit includes a second handle, a second support rod, and a second shear blade; one end of the second support rod is fixedly connected to one end of the second handle, and the other end is fixedly connected to one end of the second shear blade; the first shear blade is rotatably connected to the second shear blade.

[0006] A guide unit is connected to the end of the first shear blade away from the first support rod; the guide unit is spaced apart from the second shear blade.

[0007] In some embodiments, the guiding unit includes a locking module and a guiding module; one end of the locking module is smoothly and fixedly connected to one end of the guiding module; the width and thickness of the guiding module decrease uniformly from the end near the locking module to the end away from the locking module, and the guiding module is curved; the locking module is connected to the first shear blade; the locking module and the second shear blade are spaced apart; the first shear blade and the second shear blade are respectively spaced apart from the guiding module.

[0008] In some embodiments, the first shear blade includes a first connecting portion, a first shearing portion, a first connecting hole, a first screw hole, and a second screw hole; one end of the first connecting portion is fixedly connected to one end of the first support rod, and the other end is fixedly connected to one end of the first shearing portion; the first connecting hole penetrates both ends of the first connecting portion along its thickness direction; the first screw hole is recessed from one side of the first shearing portion along its thickness direction; the second screw hole is recessed from one side of the first shearing portion along its thickness direction; the first screw hole and the second screw hole are spaced apart; the first screw hole and the second screw hole... The opening directions are the same; the engaging module is connected to the first shearing part; the second shear blade includes a second connecting part, a second shearing part, and a second connecting hole; one end of the second connecting part is fixedly connected to one end of the second support rod, and the other end is fixedly connected to one end of the second shearing part; the second connecting hole penetrates both ends of the second connecting part along the thickness direction; a pin passes between the first connecting hole and the second connecting hole; the first connecting part and the second connecting part are rotatably connected by the pin; the first shearing part and the second shearing part are movably connected; the first shearing part and the second shearing part are respectively spaced apart from the guide module.

[0009] In some embodiments, the first shear blade further includes a first slot; the first slot extends from one end of the first connecting portion to the other end face along the thickness direction of the first connecting portion; the connection between the first connecting portion and the first shearing portion is smoothly transitioned; the second shear blade further includes a second slot; the second slot extends from one end of the second connecting portion to the other end face along the thickness direction of the second connecting portion; the connection between the second connecting portion and the second shearing portion is smoothly transitioned; the first slot and the second slot are in communication.

[0010] In some embodiments, the engaging module includes an engaging portion, a third slot, a first through hole, a second through hole, a first limiting groove, and a second limiting groove; one end of the engaging portion is fixedly connected to a guide module; the third slot extends along the thickness direction of the engaging portion from one end of the engaging portion near the bent end of the guide module to the other end face, and the third slot penetrates the end face of the engaging portion away from the guide module; the first through hole extends inward from one side of the engaging portion to the third slot along the width direction of the engaging portion; the second through hole extends inward from one side of the engaging portion to the third slot along the width direction of the engaging portion; the first limiting groove is recessed inward from one side of the engaging portion along the width direction of the engaging portion; the first limiting groove and the third slot are spaced apart; the first limiting groove communicates with the first through hole, and the center of the first limiting groove... The shaft is the same as the central axis of the first through hole, and the diameter of the first limiting groove is larger than the diameter of the first through hole; the second limiting groove is recessed inward from one side of the engaging portion along the width direction of the engaging portion; the second limiting groove and the third locking groove are spaced apart; the second limiting groove communicates with the second through hole, the central axis of the second limiting groove is the same as the central axis of the second through hole, and the diameter of the second limiting groove is larger than the diameter of the second through hole; the diameter of the first through hole is greater than or equal to the diameter of the first screw hole, and the first through hole communicates with the first screw hole; the diameter of the second through hole is greater than or equal to the diameter of the second screw hole, and the second through hole communicates with the second screw hole; the first shearing portion is connected to the engaging portion by screws through the first screw hole and the second screw hole respectively; the first shearing portion and the second shearing portion are respectively located in the third locking groove.

[0011] In some embodiments, the thickness and height of the first shear portion gradually decrease from one end near the first connecting portion to the other end away from the first connecting portion; the thickness and height of the second shear portion gradually decrease from one end near the second connecting portion to the other end away from the second connecting portion.

[0012] In some embodiments, the width and height of the third slot gradually decrease from the end furthest from the guide module to the end closest to the guide module.

[0013] In some embodiments, the maximum width of the engaging portion is less than the maximum width of the guide module.

[0014] In some embodiments, the bending angle of the guide module is A; where 170°≤A≤180°.

[0015] In some embodiments, the length of the first shear portion is greater than the length of the second shear portion.

[0016] To address the problem that existing surgical scissors may puncture or improperly cut the valve to be repaired when cutting the blood vessel wall, potentially leading to valve surgery failure, this invention has the following advantages:

[0017] By setting a guide unit, the guide unit is connected to the end of the first scissor blade away from the first support rod; the guide unit is spaced apart from the second scissor blade, so that when it is necessary to cut the blood vessel wall, the first scissor blade can be inserted into the blood vessel through a small incision on the blood vessel wall; due to the setting of the guide unit, the guide unit can prevent the tip of the first scissor blade from scratching or puncturing the valve to be repaired, thus avoiding the situation where the valve is inappropriately cut open completely, which may lead to surgical failure. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a venous valve surgery scissors is shown;

[0019] Figure 2 A schematic diagram of the overall structure of the first half-shear unit is shown;

[0020] Figure 3 A schematic diagram of the overall structure of the second half-shear unit is shown;

[0021] Figure 4 A three-dimensional structural diagram of the guiding unit;

[0022] Figure 5 A schematic diagram of the planar structure of the guide unit is shown.

[0023] In the diagram: 01, First half-shear unit; 11, First handle; 12, First support rod; 13, First shear blade; 131, First connecting part; 132, First connecting hole; 133, First shearing part; 134, First screw hole; 135, Second screw hole; 136, First slot; 14, Pin; 02, Second half-shear unit; 21, Second handle; 22, Second support rod; 23, Second shear blade; 231, Second connecting part; 232, Second connecting hole; 233, Second shearing part; 234, Second slot; 03, Guide unit; 31, Engaging module; 311, Engaging part; 312, Third slot; 313, First through hole; 314, Second through hole; 315, First limiting groove; 316, Second limiting groove; 32, Guide module. Detailed Implementation

[0024] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0025] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0026] Valve surgery scissors are high-precision instruments specifically designed for venous valve surgery, primarily used for precisely cutting blood vessels and safely exposing the valves. When cutting blood vessels, a small incision is first made; then, the cutting part of the surgical scissors is inserted into the small incision to cut the vessel wall. Existing surgical scissors, due to the sharp tip of their cutting part, may be prone to improper operation when inserted into the blood vessel, making it difficult to accurately control the insertion depth. This can lead to the tip piercing the valve to be repaired, and in some cases, even inappropriately cutting the entire valve, potentially causing the entire surgery to fail. To address the problem of existing surgical scissors potentially piercing or inappropriately cutting the valve to be repaired, thus leading to valve surgery failure, this embodiment provides a venous valve surgery scissor, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, it may include:

[0027] The first half-shear unit 01 includes a first handle 11, a first support rod 12, and a first shear blade 13; one end of the first support rod 12 is fixedly connected to one end of the first handle 11, and the other end is fixedly connected to one end of the first shear blade 13.

[0028] The second half-shear unit 02 includes a second handle 21, a second support rod 22, and a second scissor blade 23; one end of the second support rod 22 is fixedly connected to one end of the second handle 21, and the other end is fixedly connected to one end of the second scissor blade 23; the first scissor blade 13 is rotatably connected to the second scissor blade 23.

[0029] Guide unit 03 is connected to the end of the first shear blade 13 away from the first support rod 12; guide unit 03 and the second shear blade 23 are spaced apart.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the venous valve surgical scissors include a first half-cutting unit 01, and the first half-cutting unit 01 includes a first handle 11, a first support rod 12, and a first cutting blade 13; one end of the first support rod 12 is fixedly connected to one end of the first handle 11, and the other end is fixedly connected to one end of the first cutting blade 13; in this embodiment, the material of the first half-cutting unit 01 is stainless steel that meets medical use requirements or other metal materials that are suitable for this scenario and meet medical needs.

[0031] The venous valve surgical scissors also include a second half-scissor unit 02, which includes a second handle 21, a second support rod 22, and a second scissor blade 23. One end of the second support rod 22 is fixedly connected to one end of the second handle 21, and the other end is fixedly connected to one end of the second scissor blade 23. The first scissor blade 13 is rotatably connected to the second scissor blade 23. In this embodiment, the material of the second half-scissor unit 02 is stainless steel that meets medical requirements or other metal materials that are suitable for this scenario and meet medical needs. In this embodiment, those skilled in the art will understand that the rotatable connection between the first scissor blade 13 and the second scissor blade 23 can be schematically understood as follows: by the operator holding the first handle 11 and the second handle 21, the first scissor blade 13 can be rotated around the connection between the second scissor blade 23 and the first scissor blade 13, or the second scissor blade 23 can be rotated around the connection between the second scissor blade 23 and the first scissor blade 13, or the first scissor blade 13 and the second scissor blade 23 can be rotated around the connection between the second scissor blade 23 and the first scissor blade 13, or the first scissor blade 13 and the second scissor blade 23 can be rotated around the connection between the second scissor blade 23 and the first scissor blade 13. The specific rotation can be selected according to the time and scenario.

[0032] The venous valve surgical scissors also include a guide unit 03, which is connected to the end of the first scissor blade 13 away from the first support rod 12. The guide unit 03 and the second scissor blade 23 are spaced apart. In this embodiment, by setting the guide unit 03 and connecting it to the end of the first scissor blade 13 away from the first support rod 12, and by setting the guide unit 03 and the second scissor blade 23 apart, when it is necessary to cut the blood vessel wall, the first scissor blade 13 can be inserted into the blood vessel through a small incision in the blood vessel wall. Because of the guide unit 03, the guide unit 03 can prevent the tip of the first scissor blade 13 from scratching or puncturing the valve to be repaired, avoiding the situation where the valve is inappropriately cut open completely, which may lead to surgical failure. In this embodiment, the guide unit 03 can be made of medical metal with a smooth outer surface and no protruding tip structure, or silicone material that meets the requirements of the application of the guide unit 03.

[0033] In some embodiments, such as Figure 1 , Figure 4 , Figure 5 As shown, the guide unit 03 includes a locking module 31 and a guide module 32; one end of the locking module 31 is smoothly connected to one end of the guide module 32; the width and thickness of the guide module 32 decrease uniformly from the end near the locking module 31 to the end away from the locking module 31, and the guide module 32 is curved; the locking module 31 is connected to the first shear blade 13; the locking module 31 and the second shear blade 23 are spaced apart; the first shear blade 13 and the second shear blade 23 are respectively spaced apart from the guide module 32.

[0034] In this embodiment, as Figure 1 , Figure 4 , Figure 5 As shown, the guide unit 03 includes a locking module 31 and a guide module 32; one end of the locking module 31 is smoothly connected to one end of the guide module 32, wherein the locking module 31 is preferably integrally formed with the guide module 32; by uniformly reducing the width and thickness of the guide module 32 from the end near the locking module 31 to the end away from the locking module 31 and making it curved, the guide module 32 can easily enter the blood vessel and prevent the guide module 32 from causing hard damage to the blood vessel (such as scratching or rupturing the blood vessel), and the guide module 32 can play a better guiding role; in this embodiment, the locking module 31 is connected to the first scissor blade 13, and this connection method can be a fixed connection or a detachable fixed connection; the locking module 31 and the second scissor blade 23 are spaced apart, so that when the first scissor blade 13 and the second scissor blade 23 rotate relative to each other, the locking module 31 will not prevent the first scissor blade 13 and the second scissor blade 23 from generating a shearing action; and in this embodiment, the first scissor blade 13 and the second scissor blade 23 are also spaced apart from the guide module 32 respectively.

[0035] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the first shear blade 13 includes a first connecting portion 131, a first shearing portion 133, a first connecting hole 132, a first screw hole 134, and a second screw hole 135. One end of the first connecting portion 131 is fixedly connected to one end of the first support rod 12, and the other end is fixedly connected to one end of the first shearing portion 133. The first connecting hole 132 penetrates both ends of the first connecting portion 131 along its thickness direction. The first screw hole 134 is recessed from one side of the first shearing portion 133 along its thickness direction. The second screw hole 135 is recessed from one side of the first shearing portion 133 along its thickness direction. The first screw hole 134 and the second screw hole 135 are spaced apart. The openings of the first screw hole 134 and the second screw hole 135 are... The directions are the same; the engaging module 31 is connected to the first shearing part 133; the second shear blade 23 includes a second connecting part 231, a second shearing part 233, and a second connecting hole 232; one end of the second connecting part 231 is fixedly connected to one end of the second support rod 22, and the other end is fixedly connected to one end of the second shearing part 233; the second connecting hole 232 penetrates both ends of the second connecting part 231 along the thickness direction; a pin 14 passes between the first connecting hole 132 and the second connecting hole 232; the first connecting part 131 and the second connecting part 231 are rotatably connected by the pin 14; the first shearing part 133 and the second shearing part 233 are movably connected; the first shearing part 133 and the second shearing part 233 are respectively spaced apart from the guide module 32.

[0036] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the first shear blade 13 includes a first connecting portion 131, a first shearing portion 133, a first connecting hole 132, a first screw hole 134, and a second screw hole 135; one end of the first connecting portion 131 is fixedly connected to one end of the first support rod 12, and the other end is fixedly connected to one end of the first shearing portion 133; in this embodiment, the first connecting portion 131 is used to transitionally connect the first support rod 12 and the first shearing portion 133. Figure 2 As shown, the first cutting part 133 and the first connecting part 131 are bent at a certain angle, making the first half-cutting unit 01 a bent scissor. This shape is the conventional shape of medical surgical scissors, and its function will not be described in detail here. In this embodiment, the first connecting hole 132 penetrates both ends of the first connecting part 131 along the thickness direction, and the first cutting blade 13 is rotatably connected to the second cutting blade 23 through the first connecting hole 132. In this embodiment, as shown... Figure 2As shown, the first screw hole 134 is recessed inward along the thickness direction of the first shearing portion 133; the second screw hole 135 is recessed inward along the thickness direction of the first shearing portion 133; the first screw hole 134 and the second screw hole 135 are spaced apart; wherein, the inner circumferential surfaces of both the first screw hole 134 and the second screw hole 135 are provided with threads; as shown Figure 1 As shown, the engaging module 31 is connected to the first shearing part 133; as Figure 3 As shown, the second shear blade 23 includes a second connecting portion 231, a second shearing portion 233, and a second connecting hole 232; one end of the second connecting portion 231 is fixedly connected to one end of the second support rod 22, and the other end is fixedly connected to one end of the second shearing portion 233; in this embodiment, the second connecting portion 231 is used to transitionally connect the second support rod 22 and the second shearing portion 233; wherein, the second shearing portion 233 and the second connecting portion 231 are set at a certain angle; so that the second half-shear unit 02 is a bent shear, and the second connecting hole 232 penetrates through both ends of the second connecting portion 231 along the thickness direction of the second connecting portion 231; first A pin 14 passes through the connecting hole 132 and the second connecting hole 232; in this embodiment, the first connecting part 131 and the second connecting part 231 are rotatably connected by the pin 14; the first shearing part 133 and the second shearing part 233 are movably connected. When the first connecting part 131 and the second connecting part 231 rotate relative to each other, the first shearing part 133 and the second shearing part 233 may generate shearing force, thereby realizing the shearing of the blood vessel wall by the first shearing part 133 and the second shearing part 233; the first shearing part 133 and the second shearing part 233 are respectively spaced apart from the guide module 32.

[0037] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown; the first shear blade 13 further includes a first slot 136; the first slot 136 extends from one end of the first connecting portion 131 to the other end face along the thickness direction of the first connecting portion 131; the connection between the first connecting portion 131 and the first cutting portion 133 is smoothly transitioned; the second shear blade 23 further includes a second slot 234; the second slot 234 extends from one end of the second connecting portion 231 to the other end face along the thickness direction of the second connecting portion 231; the connection between the second connecting portion 231 and the second cutting portion 233 is smoothly transitioned; the first slot 136 and the second slot 234 are in communication.

[0038] In this embodiment, as Figure 1 , Figure 2 , Figure 3As shown, the first scissor blade 13 also includes a first slot 136; the first slot 136 extends from one end of the first connecting portion 131 to the other end face along the thickness direction of the first connecting portion 131; in this embodiment, the depth of the first slot 136 can be set according to the actual situation, and the connection between the first connecting portion 131 and the first cutting portion 133 is smoothly transitioned, which can avoid excessive friction between the connection between the first connecting portion 131 and the first cutting portion 133 and the blood vessel when they may come into contact; in this embodiment, the second scissor blade 23 also includes a second slot 234; the second slot 234 extends from one end of the second connecting portion 231 to the other end face along the thickness direction of the second connecting portion 231; the connection between the second connecting portion 231 and the second cutting portion 233 is smoothly transitioned; by communicating with the first slot 136 and the second slot 234, the thickness of the first cutting portion 133 and the second cutting portion 233 after connection can be reduced, thereby facilitating the operation of the first cutting portion 133 and the second cutting portion to cut the blood vessel wall.

[0039] In some embodiments, such as Figure 1 , Figure 4As shown, the engaging module 31 includes an engaging portion 311, a third slot 312, a first through hole 313, a second through hole 314, a first limiting groove 315, and a second limiting groove 316; one end of the engaging portion 311 is fixedly connected to the guide module 32; the third slot 312 extends along the thickness direction of the engaging portion 311 from one end face of the engaging portion 311 near the bent end of the guide module 32 to the other end face, and the third slot 312 penetrates the end face of the engaging portion 311 away from the guide module 32; the first through hole 313 extends along the thickness direction of the engaging portion 311. The width direction of 11 extends inward from one side of the engaging portion 311 into the third slot 312; the second through hole 314 extends inward from one side of the engaging portion 311 into the third slot 312 along the width direction of the engaging portion 311; the first limiting groove 315 is recessed inward from one side of the engaging portion 311 along the width direction of the engaging portion 311; the first limiting groove 315 and the third slot 312 are spaced apart; the first limiting groove 315 communicates with the first through hole 313, and the center of the first limiting groove 315... The first limiting groove 315 has the same central axis as the first through hole 313, and the diameter of the first limiting groove 315 is larger than the diameter of the first through hole 313; the second limiting groove 316 is recessed inward from one side of the engaging portion 311 along the width direction of the engaging portion 311; the second limiting groove 316 is spaced apart from the third locking groove 312; the second limiting groove 316 communicates with the second through hole 314, the central axis of the second limiting groove 316 is the same as the central axis of the second through hole 314, and the diameter of the second limiting groove 316 is larger than that of the second through hole 314. The diameter of the first through hole 313 is greater than or equal to the diameter of the first screw hole 134, and the first through hole 313 communicates with the first screw hole 134; the diameter of the second through hole 314 is greater than or equal to the diameter of the second screw hole 135, and the second through hole 314 communicates with the second screw hole 135; the first shearing part 133 is screwed to the engaging part 311 through the first screw hole 134 and the second screw hole 135 respectively; the first shearing part 133 and the second shearing part 233 are respectively located in the third slot 312.

[0040] In this embodiment, as Figure 1 , Figure 4As shown, the engaging module 31 includes an engaging portion 311, a third slot 312, a first through hole 313, a second through hole 314, a first limiting groove 315, and a second limiting groove 316. One end of the engaging portion 311 is fixedly connected to the guide module 32. The third slot 312 extends along the thickness direction of the engaging portion 311 from one end face of the engaging portion 311 near the bent end of the guide module 32 to the other end face, and the third slot 312 penetrates the end face of the engaging portion 311 away from the guide module 32. The first through hole 313 extends inward from one side face of the engaging portion 311 into the third slot 312 along the width direction of the engaging portion 311. The second through hole 314 extends along the thickness direction of the engaging portion 311 from one side face of the engaging portion 311 to the third slot 312. The width direction of part 1 extends inward from one side of the engaging portion 311 into the third slot 312; the first limiting groove 315 is recessed inward from one side of the engaging portion 311 along the width direction of the engaging portion 311; the first limiting groove 315 and the third slot 312 are spaced apart; the first limiting groove 315 communicates with the first through hole 313 and has the same central axis, and the diameter of the first limiting groove 315 is larger than the diameter of the first through hole 313; the second limiting groove 316 is recessed inward from one side of the engaging portion 311 along the width direction of the engaging portion 311; the second limiting groove 316 and the third slot 312 are spaced apart; the second limiting groove 316 communicates with the second through hole 314 and has the same central axis, and the second limiting groove... The diameter of 316 is larger than the diameter of the second through hole 314; the diameter of the first through hole 313 is greater than or equal to the diameter of a screw hole and communicates with the first screw hole 134; the diameter of the second through hole 314 is larger than the diameter of the first screw hole 134; the first shearing part 133 is connected to the engaging part 311 screw through the first screw hole 134 and the second screw hole 135 respectively; in this embodiment, those skilled in the art will know that when the first shearing part 133 is connected to the engaging part 311 screw through the first screw hole 134 and the second screw hole 135 respectively, the ends of the two screws away from the first screw hole 134 and the second screw hole 135 can be fully accommodated into the first limiting groove 315 and the second limiting groove 316. This achieves a fixed connection between the first cutting part 133 and the locking part 311. In this embodiment, by placing the first cutting part 133 and the second cutting part 233 respectively in the third locking groove 312, the first cutting part 133 and the second cutting part 233 can be stored, so that when the venous valve surgical scissors are in working condition, the first cutting part 133 is prevented from being exposed and making hard contact with human tissues or organs, thus avoiding scratching human tissues or organs. When the venous valve surgical scissors are not in working condition, the second cutting part 233 can be accommodated in the third locking groove 312, which can prevent the first cutting part 133 and the second cutting part 233 from being exposed and avoid accidental puncture of medical personnel.

[0041] In some embodiments, such as Figure 2 , Figure 3As shown, the thickness and height of the first shearing portion 133 gradually decrease from one end near the first connecting portion 131 to the other end away from the first connecting portion 131; the thickness and height of the second shearing portion 233 gradually decrease from one end near the second connecting portion 231 to the other end away from the second connecting portion 231.

[0042] In this embodiment, as Figure 2 , Figure 3 As shown, by setting the first cutting section 133 to gradually decrease in thickness and height from one end near the first connecting section 131 to one end away from the first connecting section 131, and setting the second cutting section 233 to gradually decrease in thickness and height from one end near the second connecting section 231 to one end away from the second connecting section 231, the weight of the venous valve surgical scissors can be reduced, achieving a lightweight design and facilitating operation.

[0043] In some embodiments, such as Figure 4 As shown, the width and height of the third slot 312 gradually decrease from the end furthest from the guide module 32 to the end closest to the guide module 32.

[0044] In this embodiment, as Figure 4 As shown, by setting the third slot 312 to gradually decrease in width and height from the end away from the guide module 32 to the end close to the guide module 32, the shape of the third slot 312 is similar to the shape of the first shearing part 133 and the second shearing part 233. This allows the third slot 312 to accommodate the first shearing part 133 and the second shearing part 233 while reducing its volume, avoiding excessive mass loss of the engaging module 31, which could cause the engaging module 31 to easily deform under external force during use. At the same time, it also makes the gap between the second shearing part 233 and the engaging part 311 smaller, preventing the second shearing part 233 from being exposed when the venous valve surgical scissors are not in use, thus avoiding increased contamination.

[0045] In some embodiments, such as Figure 4 As shown, the maximum width of the engaging part 311 is less than the maximum width of the guide module 32.

[0046] In this embodiment, as shown in 4, by setting the maximum width of the engaging portion 311 to be smaller than the maximum width of the guide module 32, it is easier for the guide module 32 to enter the blood vessel and for the guide module 32 to move within the blood vessel.

[0047] In some embodiments, such as Figure 5 As shown, the bending angle of the guide module 32 is A; where 170°≤A≤180°.

[0048] In this embodiment, as Figure 5 As shown, by setting the bending angle A of the guide module 32 to 170°≤A≤180°, the guide module 32 can move easily inside the blood vessel while having a certain bending angle, without contacting the blood vessel wall and causing deformation of the blood vessel wall.

[0049] In some embodiments, such as Figure 2 , Figure 3 As shown, the length of the first shearing portion 133 is greater than the length of the second shearing portion 233.

[0050] In this embodiment, by setting the length of the first shearing part 133 to be greater than the length of the second shearing part 233, the second shearing part 233 can better cut the blood vessel wall when cutting it. This avoids the situation where a portion of the second shearing part 233 along its length direction presses the blood vessel wall into the third slot 312 when the length of the second shearing part 233 is greater than the length of the first shearing part 133, which could cause inconvenience to the operation.

[0051] The working principle of this utility model is as follows:

[0052] When it is necessary to cut the blood vessel, hold the first handle 11 and the second handle 21, manipulate the first cutting part 133 and the second cutting part 233 to increase the angle between the first cutting part 133 and the second cutting part 233, then insert the first cutting part 133 and the guide module 32 into the blood vessel through the blind hole opened in the blood vessel wall, leaving the second cutting part 233 outside the blood vessel, adjust the position of the first cutting part 133 and the second cutting part 233, and then manipulate the first handle 11 and the second handle 21 to decrease the angle between the first cutting part 133 and the second cutting part 233 to cut the blood vessel wall.

[0053] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A type of surgical scissors for venous valve surgery, characterized in that, The venous valve surgical scissors include: The first half-shear unit includes a first handle, a first support rod, and a first scissor blade; one end of the first support rod is fixedly connected to one end of the first handle, and the other end is fixedly connected to one end of the first scissor blade. The second half-shear unit includes a second handle, a second support rod, and a second shear blade; one end of the second support rod is fixedly connected to one end of the second handle, and the other end is fixedly connected to one end of the second shear blade; the first shear blade is rotatably connected to the second shear blade. A guide unit is connected to the end of the first shear blade away from the first support rod; the guide unit is spaced apart from the second shear blade.

2. The surgical scissors for venous valve surgery according to claim 1, characterized in that, The guiding unit includes a locking module and a guiding module; one end of the locking module is smoothly and fixedly connected to one end of the guiding module; the width and thickness of the guiding module decrease uniformly from the end near the locking module to the end away from the locking module, and the guiding module is curved; the locking module is connected to the first shear blade; the locking module and the second shear blade are spaced apart; the first shear blade and the second shear blade are respectively spaced apart from the guiding module.

3. The surgical scissors for venous valve surgery according to claim 2, characterized in that, The first shear blade includes a first connecting portion, a first shearing portion, a first connecting hole, a first screw hole, and a second screw hole; one end of the first connecting portion is fixedly connected to one end of the first support rod, and the other end is fixedly connected to one end of the first shearing portion; the first connecting hole penetrates both ends of the first connecting portion along its thickness direction; the first screw hole is recessed from one side of the first shearing portion along its thickness direction; the second screw hole is recessed from one side of the first shearing portion along its thickness direction; the first screw hole and the second screw hole are spaced apart; the opening directions of the first screw hole and the second screw hole are the same; the engaging module is connected to the first shearing portion; the second shear blade includes a second connecting portion, a second shearing portion, and a second connecting hole; one end of the second connecting portion is fixedly connected to one end of the second support rod, and the other end is fixedly connected to one end of the second shearing portion; the second connecting hole penetrates both ends of the second connecting portion along its thickness direction; a pin passes between the first connecting hole and the second connecting hole; the first connecting portion and the second connecting portion are rotatably connected by the pin; the first shearing portion and the second shearing portion are movably connected; the first shearing portion and the second shearing portion are spaced apart from the guide module.

4. The surgical scissors for venous valve surgery according to claim 3, characterized in that, The first shear blade further includes a first slot; the first slot extends from one end of the first connecting portion to the other end face along the thickness direction of the first connecting portion; the connection between the first connecting portion and the first shearing portion is smoothly transitioned; the second shear blade further includes a second slot; the second slot extends from one end of the second connecting portion to the other end face along the thickness direction of the second connecting portion; the connection between the second connecting portion and the second shearing portion is smoothly transitioned; the first slot and the second slot are in communication.

5. The surgical scissors for venous valve surgery according to claim 3, characterized in that, The engaging module includes an engaging portion, a third slot, a first through hole, a second through hole, a first limiting groove, and a second limiting groove. One end of the engaging portion is fixedly connected to a guide module. The third slot extends along the thickness direction of the engaging portion from one end of the engaging portion near the bent end of the guide module to the other end face, and the third slot penetrates the end face of the engaging portion away from the guide module. The first through hole extends inward from one side of the engaging portion to the third slot along the width direction of the engaging portion. The second through hole extends inward from one side of the engaging portion to the third slot along the width direction of the engaging portion. The first limiting groove is recessed inward from one side of the engaging portion along the width direction of the engaging portion. The first limiting groove and the third slot are spaced apart. The first limiting groove communicates with the first through hole, and the central axis of the first limiting groove is perpendicular to the first through hole. The first through holes share the same central axis, and the diameter of the first limiting groove is larger than the diameter of the first through hole; the second limiting groove is recessed inward from one side of the engaging portion along the width direction of the engaging portion; the second limiting groove and the third engaging groove are spaced apart; the second limiting groove communicates with the second through hole, and the central axis of the second limiting groove is the same as the central axis of the second through hole, and the diameter of the second limiting groove is larger than the diameter of the second through hole; the diameter of the first through hole is greater than or equal to the diameter of the first screw hole, and the first through hole communicates with the first screw hole; the diameter of the second through hole is greater than or equal to the diameter of the second screw hole, and the second through hole communicates with the second screw hole; the first shearing portion is connected to the engaging portion by screws through the first screw hole and the second screw hole respectively; the first shearing portion and the second shearing portion are respectively located in the third engaging groove.

6. The surgical scissors for venous valve surgery according to claim 5, characterized in that, The thickness and height of the first shearing portion gradually decrease from one end near the first connecting portion to the other end away from the first connecting portion; the thickness and height of the second shearing portion gradually decrease from one end near the second connecting portion to the other end away from the second connecting portion.

7. A set of surgical scissors for venous valve surgery according to claim 6, characterized in that, The width and height of the third slot gradually decrease from the end furthest from the guide module to the end closest to the guide module.

8. A set of surgical scissors for venous valve surgery according to claim 5, characterized in that, The maximum width of the engaging portion is less than the maximum width of the guide module.

9. A set of surgical scissors for venous valve surgery according to claim 5, characterized in that, The bending angle of the guide module is A; where 170°≤A≤180°.

10. A set of surgical scissors for venous valve surgery according to claim 3, characterized in that, The length of the first shearing portion is greater than the length of the second shearing portion.

Images