CN218045241U - Varicosity ligation apparatus - Google Patents

Abstract

The utility model provides a varicosity ligature apparatus, include: the operating handle is provided with a placing concave part; the clamping piece comprises a first clamping part which is separably arranged in the placing concave part and a second clamping part which is hinged with the first clamping part, wherein the second clamping part is provided with an opening position which forms an angle with the first clamping part and a clamping position which is closed with the first clamping part; the adjusting structure is movably arranged on the operating handle and can drive the second clamping part to switch between the opening position and the clamping position. The technical scheme of the application effectively solves the problem that the vein trunk in the related technology can not be closed exactly after treatment.

Description

Varicosity ligation apparatus

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a varicosity ligature apparatus.

Background

Varicose veins refer to the tortuosity and expansion of veins caused by blood stasis, weak vein walls and other factors. Varicose veins can occur in various parts of the body, for example, hemorrhoids are actually varicose veins, and clinically visible varicose veins of the esophagus and the stomach, spermatic varicose veins and abdominal wall varicose veins. The most common site of varicose veins is in the lower extremities. It is worth emphasizing that varicose veins are secondary manifestations of other pathologies.

The varicose vein of lower limb has the treatment methods of wearing elastic socks, injecting hardener, removing operation and the like, and the deep venous valve has incomplete function and can be used for valve repair operation, endoscopic traffic branch ligation and the like. Varicose veins of the lower limbs can also indicate the existence of other diseases, and the primary disease needs to be actively treated.

For greater saphenous vein varices or lesser saphenous vein varices, the greater saphenous vein starts at the medial end of the arch of the dorsal veins of the foot, runs through the anterior of the medial malleolus, accompanies the saphenous nerve along the medial edge of the calf, runs through about 2cm behind the medial condyle of the femur, enters the medial part of the thigh, accompanies the medial cutaneous nerve of the thigh, gradually goes upwards, crosses the saphenous vein hiatus hole below the outer part of the pubic tubercle, and converges into the femoral vein, and the convergence point is called the saphenous point. The small saphenous vein is one of the major superficial veins of the lower leg. The small saphenous vein is located on the lateral side of foot, starts from arch of dorsal venous of foot, runs upward along the back of lower leg after lateral ankle, passes through the calf muscle and between the two outer ends to popliteal fossa, and is injected into popliteal vein through the fascia. The vein has many small branches that coincide with the branches of the greater saphenous vein during its journey. Because of the relation of power, the small saphenous vein is easy to block, most of the small saphenous vein is easy to be subjected to varicosity, and some of the small saphenous vein can form thrombus and generate thromboangiitis; the varicose veins can break to form leg ulcers which cannot be healed for a long time.

For large or small saphenous varicose veins, the following three treatment modalities are currently included:

the first traditional stripping method has the advantages of direct vision solution and definite effect. But the wound surface is too large, slow in recovery and easy to infect because of the need of cutting; the second category, radiofrequency, laser or minimally invasive, although recovery from minimally invasive is fast, has the drawback of not being able to close exactly the venous trunk with a diameter of more than 14mm, and is costly; the third is a sclerosing agent or glue, which also does not close the venous trunk properly and may result in the sclerosing agent or glue passing through the venous trunk into the lungs.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a varicose ligation apparatus to solve the problem that the main trunk of vein in the correlation technique can't be exactly closed after treating.

In order to achieve the above object, the present invention provides a varicose ligation apparatus, comprising: the operating handle is provided with a placing concave part; the clamping piece comprises a first clamping part which is separably arranged in the placing concave part and a second clamping part which is hinged with the first clamping part, wherein the second clamping part is provided with an opening position which forms an angle with the first clamping part and a clamping position which is closed with the first clamping part; the adjusting structure is movably arranged on the operating handle and can drive the second clamping part to switch between the opening position and the clamping position.

Furthermore, the adjusting structure comprises a limiting frame hung on the second clamping part and a pushing piece driving the limiting frame, the limiting frame is arranged on the outer side of the first clamping part in a surrounding mode, the first end of the limiting frame is hinged to the second clamping part, the second end of the limiting frame is matched with the pushing piece, and the pushing piece pushes the limiting frame to swing so as to push the second clamping part to switch between the opening position and the clamping position.

Further, the pushing part comprises a push rod, a first sliding key and a pushing hook, the push rod is movably arranged in the operating handle in a penetrating mode, the first sliding key is slidably arranged on the outer side face of the operating handle and connected with a first end of the push rod, the pushing hook is located in the placing concave portion and connected with a second end of the push rod, the pushing hook is hung on a second end of the limiting frame, and a first avoiding hole for avoiding the push rod is formed in the operating handle.

Furthermore, a through hole is formed in the second clamping portion, the axis of the through hole is perpendicular to the length direction of the operating handle, the limiting frame comprises a pivot section which can be arranged in the through hole in a penetrating mode in a swinging mode, a first connecting section and a second connecting section which are connected to the two ends of the pivot section respectively, the limiting frame further comprises a limiting section which is arranged at an interval with the pivot section and connected with the first connecting section and the second connecting section, the first connecting section, the second connecting section and the limiting section are arranged on the outer side of the first clamping portion in a surrounding mode, and the push hook can be hooked on the limiting section.

Furthermore, the first clamping part is provided with an anti-falling notch towards one side of the placing concave part, and when the second clamping part is located at the clamping position, the second end of the limiting frame is limited in the anti-falling notch.

Furthermore, the second clamping part is also provided with an initial position which is arranged in a closed manner with the first clamping part, and the push hook pushes the limiting frame to swing so as to enable the second clamping part to be sequentially switched among the initial position, the opening position and the clamping position.

Furthermore, one side of the first clamping part, which is far away from the second clamping part, is provided with a barb, the operating handle is provided with a limiting column in a floating manner, the barb hooks the edge of the operating handle, and the limiting column is inserted into the first clamping part so as to limit the first clamping part in the placing concave part.

Further, be provided with the accommodation hole that holds spacing post on the operating handle, be provided with the elastic component in the accommodation hole, varicose ligation apparatus is still including wearing to locate the pulling piece of operating handle, the first end of pulling piece penetrates in the accommodation hole and with spacing post connection, the elastic component applys the elasticity of keeping away from the pulling piece direction to spacing post, the second end of pulling piece extends to the outside of operating handle, the spacing post of pulling piece tractive is so that spacing post has the backstop position of inserting in first clamping part and the dodge position that breaks away from first clamping part.

Furthermore, the pulling part comprises a pull wire and a second sliding key connected with the pull wire, a second avoiding hole for avoiding the pull wire is formed in the operating handle, a limiting groove communicated with the second avoiding hole is formed in the outer side wall of the operating handle, the limiting groove comprises a first limiting section and a second limiting section arranged at an angle with the first limiting section, the first end of the pull wire penetrates into the accommodating hole and is connected with the limiting column, the second end of the pull wire is connected with the second sliding key, the limiting column is located at the stopping position when the second end of the pull wire is pulled into the first limiting section, and the limiting column is located at the avoiding position when the second end of the pull wire is pulled into the second limiting section.

Furthermore, a sliding groove for the first sliding key to be slidably arranged is further formed in the outer side wall of the operating handle, a locking hole arranged adjacent to the sliding groove is further formed in the outer side wall of the operating handle, and a locking piece in lockable fit with the locking hole is arranged on the first sliding key in a penetrating mode; the first clamping part is a first spherical notch part, the second clamping part is a second spherical notch part, the section plane of the second spherical notch part faces the section plane of the first spherical notch part, the placing concave part is a concave cambered surface matched with the spherical surface of the first spherical notch part, and the concave cambered surface is an inclined end surface at one end of the operating handle; the section plane of the first spherical lacking portion is provided with a first anti-slip portion, the section plane of the second spherical lacking portion is provided with a second anti-slip portion, and the first anti-slip portion and the second anti-slip portion are both avoided with the limiting frame and are both located on the same side of the limiting frame.

Use the technical scheme of the utility model, varicosity ligature apparatus includes: handle, holder and regulation structure. The operation handle is provided with a placing concave part. The clamping piece comprises a first clamping part and a second clamping part, wherein the first clamping part is detachably arranged on the placing concave part, and the second clamping part is hinged with the first clamping part. The second clamping part is provided with an opening position and a clamping position, wherein the opening position and the clamping position form an angle with the first clamping part, and the clamping position and the first clamping part are arranged in a closed mode. The adjusting structure is movably arranged on the operating handle and can drive the second clamping part to switch between an opening position and a clamping position. Under ultrasound guidance, a catheter may be used to pierce a first site of the skin, with the head of the catheter penetrating the periphery of the trunk of the varicose vein. The paralytic tumescent liquid is injected through the catheter to form an operation space around the main trunk of the vein. This facilitates minimally invasive surgery in the operating space. The clamping piece is sent into the operation space by the operation handle, the adjusting structure can drive the second clamping portion to be in an opening position, an opening formed by the first clamping portion and the second clamping portion is sleeved on the outer side of the circumferential direction of a part of vein trunk, so that the part of vein trunk is located between the first clamping portion and the second clamping portion, the adjusting structure can drive the second clamping portion to be switched to the clamping position from the opening position, at the moment, the first clamping portion and the second clamping portion clamp the part of vein trunk, the operation handle is separated from the first clamping portion, the clamping piece is left in the operation space in the body, the operation handle is taken out of the body, and the ligation operation is completed. Therefore, when a minimally invasive surgery is adopted, the vein trunk can be clamped through the clamping piece, so that definite ligation is realized, and the vein can be closed definitely after varicose vein treatment. Therefore, the technical scheme of the application effectively solves the problem that the vein trunk can not be closed exactly after being treated in the related technology.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 is a partial schematic structural view of a second clamping portion of a varicose ligation device according to an embodiment of the varicose ligation device of the present invention in an initial position;

FIG. 2 shows a front schematic view of the clamp of FIG. 1;

FIG. 3 illustrates a partial schematic structural view of the second clamping portion of the varicose ligation instrument of FIG. 1 in an open position;

FIG. 4 illustrates a partial schematic structural view of the second clamping portion of the varicose ligation instrument of FIG. 1 in a clamped position;

FIG. 5 is a schematic view of a portion of the varicose ligation device of FIG. 1 with the second clamping portion in a clamping position and the restraint post in an avoidance position;

FIG. 6 shows a front schematic view of the clamp of FIG. 5;

FIG. 7 shows a schematic perspective view of the second clamp portion of the varicose ligation instrument of FIG. 1 in an initial position;

FIG. 8 illustrates a partial schematic structural view of the varicose ligation instrument of FIG. 7;

FIG. 9 shows a schematic partial cross-sectional view of the varicose ligation instrument of FIG. 7;

FIG. 10 illustrates a schematic perspective view of the second clamp portion of the varicose ligation instrument of FIG. 1 in an open position;

FIG. 11 illustrates a schematic perspective view of the second clamp portion of the varicose ligation instrument of FIG. 10 in a clamped position and the spacing post in an escape position;

FIG. 12 shows a partial schematic structural view of the varicose ligation instrument of FIG. 11;

fig. 13 shows a partial cross-sectional schematic view of the varicose ligation instrument of fig. 11.

Wherein the figures include the following reference numerals:

1. a main vein; 10. an operating handle; 11. placing the concave part; 12. an accommodation hole; 13. a second avoidance hole; 14. a limiting groove; 141. a first limiting section; 142. a second limiting section; 15. a chute; 16. a lock hole; 17. a first avoidance hole; 18. a guide groove; 20. a clamping member; 21. a first clamping portion; 211. a barb; 212. an anti-drop gap; 22. a second clamping portion; 221. a through hole; 23. a first anti-slip portion; 24. a second anti-slip portion; 30. an adjustment structure; 31. a pusher member; 311. a limiting frame; 3111. a pivot section; 3112. a first connection section; 3113. a second connection section; 3114. a limiting section; 312. pushing a hook; 313. a push rod; 32. a first feather key; 41. a limiting column; 42. an elastic member; 43. a pulling member; 431. a pull wire; 432. a second feather key; 44. a locking member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 13, the varicose ligation instrument of the present embodiment includes: a lever 10, a clamp 20 and an adjustment structure 30. The operation handle 10 is provided with a placement recess 11. The clamping member 20 includes a first clamping portion 21 detachably disposed in the placing recess 11 and a second clamping portion 22 hinged to the first clamping portion 21. The second clamping portion 22 has an open position disposed at an angle to the first clamping portion 21 and a clamping position disposed close to the first clamping portion 21. The adjustment mechanism 30 is movably disposed on the handle 10 and can drive the second clamping portion 22 to switch between the open position and the clamping position.

With the technical solution of this embodiment, the second clamping portion 22 has an open position disposed at an angle with the first clamping portion 21 and a clamping position disposed close to the first clamping portion 21. The adjustment mechanism 30 is movably disposed on the handle 10 and can drive the second clamping portion 22 to switch between the open position and the clamping position. Under ultrasound guidance, a catheter may be used to pierce the first place of the skin, with the head of the catheter penetrating the periphery of the trunk 1 of the varicose vein. The paralytic tumescent liquid is injected through the catheter to form an operation space around the vein trunk 1. This facilitates minimally invasive surgery in the operating space. The clamping piece 20 is sent into the operation space by the operation handle 10, the adjusting structure 30 can drive the second clamping portion 22 to be in an opening position, an opening formed by the first clamping portion 21 and the second clamping portion 22 is sleeved on the outer side of the circumferential direction of a part of the vein trunk 1, so that the part of the vein trunk 1 is located between the first clamping portion 21 and the second clamping portion 22, the adjusting structure 30 can drive the second clamping portion 22 to be switched to the clamping position from the opening position, the first clamping portion 21 and the second clamping portion 22 clamp the part of the vein trunk, the operation handle 10 is separated from the first clamping portion 21, the clamping piece 20 is left in the operation space in the body, the operation handle 10 is taken out of the body, and the ligation operation is completed. Thus, when a minimally invasive surgery is adopted, the vein trunk can be clamped through the clamping piece 20, so that definite ligation is realized, and the vein can be closed definitely after varicose vein treatment. Therefore, the technical scheme of the embodiment effectively solves the problem that the vein trunk can not be closed exactly after treatment in the related art.

The first clamping portion 21 is provided in the placement recess 11 separately means that the first clamping portion 21 can be held in the placement recess 11 and separated from the placement recess 11. What is meant by the adjustment structure 30 being movably disposed on the handle 10 is that a portion of the adjustment structure 30 is movably disposed in the handle 10, and another portion of the adjustment structure 30 is movably disposed outside the handle 10.

As shown in fig. 7 to 12, the adjusting structure 30 includes a limiting frame 311 hung on the second clamping portion 22 and a pushing member 31 for driving the limiting frame 311. The limiting frame 311 is arranged around the outer side of the first clamping portion 21, a first end of the limiting frame 311 is hinged to the second clamping portion 22, a second end of the limiting frame 311 is matched with the pushing member 31, and the pushing member 31 pushes the limiting frame 311 to swing so as to push the second clamping portion 22 to switch between an opening position and a clamping position. Thus, the arrangement of the limiting frame 311 can limit the opening angle between the second clamping part 22 and the first clamping part 21, and avoid the interference of the tissue in the human body caused by the overlarge opening angle of the second clamping part 22.

As shown in fig. 7 to 13, the pusher 31 includes a push rod 313, a first feather key 32, and a push hook 312. The push rod 313 is movably arranged in the operating handle 10 in a penetrating manner, the first sliding key 32 is slidably arranged on the outer side surface of the operating handle 10 and connected with a first end of the push rod 313, the push hook 312 is arranged in the placing concave part 11 and connected with a second end of the push rod 313, the push hook 312 is hung on a second end of the limit frame 311, and a first avoidance hole 17 for avoiding the push rod 313 is arranged in the operating handle 10. The first slide key 32 is arranged to facilitate operation, the first slide key 32 is pushed, so that the first slide key 32 pushes the push rod 313 to move towards the direction of the clamping member 20, and the push hook 312 is hung at the second end of the limiting frame 311, and the second end of the limiting frame 311 of the push hook 312 enables the limiting frame 311 to swing around the position where the first end of the limiting frame 311 is located, so that the second clamping portion 22 can be switched from the opening position to the clamping position.

As shown in fig. 7 to 13, the second clamping portion 22 is provided with a through hole 221. The axis of the through hole 221 is perpendicular to the longitudinal direction of the lever 10. The position limiting frame 311 includes a pivot section 3111 swingably inserted into the through hole 221, and a first connection section 3112 and a second connection section 3113 respectively connected to both ends of the pivot section 3111. The position-limiting frame 311 further includes a position-limiting section 3114 spaced apart from the pivot section 3111 and connected to the first connection section 3112 and the second connection section 3113, the first connection section 3112, the second connection section 3113 and the position-limiting section 3114 are enclosed outside the first clamping portion 21, and the push hook 312 can be hooked on the position-limiting section 3114. In this way, the first connecting section 3112 and the second connecting section 3113 can be used as a stay bar to support the pivot section 3111, so that the pivot section 3111 can swing in the through hole 221, and the limiting section 3114 can limit the size of the opening angle of the second clamping portion 22, so as to avoid the opening angle of the second clamping portion 22 from being too large to interfere with the tissue in the human body, and the second clamping portion 22 is in the opening position when the limiting section 3114 is attached to the outer side surface of the first clamping portion 21. In this way, the second clamping portion 22 can smoothly perform the switching process between the open position and the clamping position.

Specifically, the push hook 312 includes an arm connected to the second end of the push rod 313 and a hook head connected to the arm, and the hook head can be hooked on the limit section 3114. The arm is disposed perpendicular to the axis of the push rod 313 or at an acute angle.

As shown in fig. 7 to 13, the first clamping portion 21 is provided with a retaining notch 212 on a side facing the placing recess 11. When the second clamping portion 22 is located at the clamping position, the second end of the limiting frame 311 is limited in the anti-falling notch 212. At this time, when the second clamping portion 22 tends to be switched from the clamping position to the opening position, the second end of the limiting frame 311 is always limited in the anti-falling notch 212 and cannot be separated from the anti-falling notch 212, so that the second clamping portion 22 can be reliably maintained at the clamping position. The second end of the limiting frame 311 is the limiting section 3114.

Specifically, the anti-slip notch 212 includes a first straight surface and a first inclined surface inclined from the first straight surface. In the process that the second clamping portion 22 is switched from the open position to the clamping position, the first inclined surface is provided to facilitate the sliding of the limiting section 3114 into the anti-falling notch 212 along the first inclined surface. The first straight surface can stop the stopper section 3114, and prevent the part of the stopper section 3114 located in the anti-slip notch 212 from slipping out of the anti-slip notch 212, and the anti-slip notch 212 can reliably hold the second clamping portion 22 at the clamping position.

As shown in fig. 7 to 13, in order to facilitate the operation handle 10 to smoothly feed the clamping member 20 into the operation space while avoiding interference with the tissue in the human body as much as possible, the second clamping portion 22 further has an initial position in which it is closed with the first clamping portion 21. The pushing hook 312 pushes the limiting frame 311 to swing so that the second clamping portion 22 is sequentially switched among the initial position, the open position and the clamping position. Thus, the second clamping portion 22 has a plurality of working positions, so that the clamping member 20 can be flexibly designed to meet various use environments of human bodies.

In this embodiment, in order to facilitate the pushing hooks 312 to regularly slide on the inner wall of the placing recess 11, the inner wall of the placing recess 11 is provided with a guide groove 18 communicating with the first avoidance hole 17. The push hook 312 pushes the second end of the limiting frame 311 to swing, so that in the process that the second clamping portion 22 is switched from the initial position to the opening position and then to the clamping position, the push hook 312 can slide along the guide groove 18, the guide groove 18 limits the positions of the two sides of the push hook 312, and the push hook 312 is prevented from swinging left and right.

As shown in fig. 7 to 13, the outer side wall of the operating handle 10 is further provided with a sliding groove 15 in which the first sliding key 32 is slidably disposed. The outer side wall of the operating handle 10 is also provided with a lock hole 16 which is arranged adjacent to the slide slot 15. A locking piece 44 which can be matched with the locking hole 16 in a locking way is arranged on the first sliding key 32 in a penetrating way. When the locking piece 44 fixes the first slide key 32 at the lock hole 16, the second clamping portion 22 is pulled by the pushing piece 31 to keep the second clamping portion 22 at the initial position. The locking member 44 is preferably a screw, and the locking hole 16 is a threaded hole to which the screw is threadedly coupled.

As shown in fig. 7 to 13, the first clamping portion 21 is provided with an barb 211 on the side away from the second clamping portion 22. The operation handle 10 is provided with a position-limiting column 41 in a floating manner, the barb 211 hooks the edge of the operation handle 10, and the position-limiting column 41 is inserted into the first clamping part 21 to limit the first clamping part 21 in the placing concave part 11. In this way, the second clamping portion 22 sequentially performs a switching process among the initial position, the opening position and the clamping position, the barb 211 is arranged to prevent the first clamping portion 21 from moving from the barb 211 to the limiting column 41, the limiting column 41 is arranged to prevent the first clamping portion 21 from moving from the limiting column 41 to the barb 211, and the barb 211 and the limiting column 41 respectively limit the first clamping portion 21 from two positions of the first clamping portion 21, so as to clamp the clamping member 20 on the operation handle 10 and prevent the clamping member 20 from falling off the operation handle 10.

As shown in fig. 7 to 13, the operation handle 10 is provided with a receiving hole 12 for receiving the stopper rod 41, and the receiving hole 12 is provided with an elastic member 42. The varicosity ligation apparatus further comprises a pulling part 43 arranged on the operating handle 10 in a penetrating mode, a first end of the pulling part 43 penetrates into the accommodating hole 12 and is connected with the limiting column 41, and the elastic part 42 applies elastic force to the limiting column 41 in a direction away from the pulling part 43. The elastic member 42 is arranged to enable the position-limiting column 41 to float in the accommodating hole 12, so that the position-limiting column 41 can be elastically restored. The second end of the pulling member 43 extends to the outside of the operating handle 10, and the pulling member 43 pulls the position-limiting column 41 so that the position-limiting column 41 has a stopping position inserted into the first clamping portion 21 and an avoiding position separated from the first clamping portion 21. When the barb 211 hooks the edge of the operating handle 10 and the position-limiting column 41 is in the stopping position, the clamping piece 20 can be clamped on the operating handle 10, so that the clamping piece 20 can be kept on the operating handle 10. When the barb 211 hooks the edge of the operating handle 10 and the limiting column 41 is in the avoiding position, since only one position on the clamping piece 20 is limited by the operating handle 10, the clamping piece 20 can be loosened on the operating handle 10, so that the operating handle 10 and the clamping piece 20 can be separated conveniently, and the operating handle 10 can be taken out from the human body.

Specifically, the outer side wall of the first clamping portion 21 is provided with a limiting notch matched with the limiting column 41 in a limiting manner, so that the limiting column 41 can be conveniently inserted into the first clamping portion 21. And the limiting notch comprises a second straight surface and a second inclined surface which is obliquely arranged with the second straight surface. The arrangement of the second inclined plane facilitates the sliding of the limiting column 41 into the limiting notch along the second inclined plane, so that the limiting column 41 can be switched from the avoiding position to the stopping position. The second straight surface can stop the limiting column 41, so that the part of the limiting column 41 positioned in the limiting notch is prevented from sliding out of the limiting notch, and the limiting column 41 is reliably kept at the stopping position.

As shown in fig. 7 to 13, the pulling member 43 includes a pulling wire 431 and a second sliding key 432 connected to the pulling wire 431. A second avoidance hole 13 of the avoidance line 431 is formed in the operating handle 10, and a limit groove 14 communicated with the second avoidance hole 13 is formed in the outer side wall of the operating handle 10. The position-limiting groove 14 includes a first position-limiting section 141 and a second position-limiting section 142 disposed at an angle to the first position-limiting section 141. The first end of the pulling wire 431 penetrates into the accommodating hole 12 and is connected with the limiting column 41, the second end of the pulling wire 431 is connected with the second sliding key 432, the limiting column 41 is in the stopping position when the second end of the pulling wire 431 is pulled into the first limiting section 141, and the limiting column 41 is in the avoiding position when the second end of the pulling wire 431 is pulled into the second limiting section 142. The second feather key 432 is provided for ease of operation. Thus, the stopper groove 14 can limit the movable range of the second end of the tension wire 431, and the movement position of the stopper column 41 can be controlled when the tension wire 431 is pulled.

As shown in fig. 7 to 13, the first clamping portion 21 is a first spherical segment, the second clamping portion 22 is a second spherical segment, and the section plane of the second spherical segment faces the section plane of the first spherical segment, so that the section plane of the first spherical segment and the section plane of the second spherical segment can clamp the venous trunk 1, and the venous trunk 1 can be ensured to be closed reliably. In order to make the shape of the placing concave part 11 and the outer surface of the first segment ideally fit, the placing concave part 11 is a concave arc surface matched with the spherical surface of the first segment. In order to reduce the space of the operating space occupied by the clamping piece 20 and the operating handle 10, the concave cambered surface is an inclined end surface at one end of the operating handle 10, so that the varicose ligation apparatus has a compact structure and occupies a small space.

As shown in fig. 7 to 13, in order to prevent the trunk 1 from sliding with respect to the sectional plane of the first spherical segment and the sectional plane of the second spherical segment, a first anti-slip portion 23 is provided on the sectional plane of the first spherical segment, and a second anti-slip portion 24 is provided on the sectional plane of the second spherical segment. Thus, the first anti-slip portion 23 can increase the frictional force of the cross-sectional plane of the first spherical segment, and the second anti-slip portion 24 can increase the frictional force of the cross-sectional plane of the second spherical segment. In order to avoid interference between the first anti-slip part 23 and the second anti-slip part 24 and the limiting frame 311, the first anti-slip part 23 and the second anti-slip part 24 are arranged in a way of avoiding the limiting frame 311 and are located on the same side of the limiting frame 311.

In the present embodiment, specifically, in order to further ensure the anti-slip effect of the first anti-slip part 23 and the second anti-slip part 24, the first anti-slip part 23 is a first anti-slip convex tooth, and the second anti-slip part 24 is a second anti-slip convex tooth.

After the ligation operation is completed by applying the varicose vein ligation apparatus of the present embodiment, a catheter is used to pierce through a position of the other end opposite to the ligation portion of the vein trunk 1, a radio frequency catheter (not shown in the figure) is used to penetrate into the vein trunk 1 from the opposite other end, the radio frequency catheter is used to heat, the heat of the radio frequency catheter is conducted to the inner wall of the vein trunk 1, so that the inner wall of the vein trunk 1 is contracted, and the radio frequency catheter is withdrawn to enable the inner wall of the vein trunk 1 to be in a closed state. When the venous trunk 1 is caused to be in a closed state, the blood in the venous trunk 1 will be rewashed into other healthy veins. Of course, a sclerosing agent treatment may be performed at a position of the other end opposite to the ligation portion of the vein trunk 1 after completion of the ligation operation using the varicose ligation apparatus of the present embodiment.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and 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 interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A varicose ligation device comprising:

the operating handle (10), the said operating handle (10) is set up and placed the concave part (11);

the clamping piece (20) comprises a first clamping part (21) which is detachably arranged on the placing concave part (11) and a second clamping part (22) which is hinged with the first clamping part (21), wherein the second clamping part (22) is provided with an opening position which is arranged at an angle with the first clamping part (21) and a clamping position which is arranged in a closed mode with the first clamping part (21);

and the adjusting structure (30) is movably arranged on the operating handle (10) and can drive the second clamping part (22) to switch between the opening position and the clamping position.

2. The varicose ligation device according to claim 1, wherein the adjustment structure (30) comprises a limit frame (311) hung on the second clamping portion (22) and a pushing member (31) driving the limit frame (311), the limit frame (311) is enclosed outside the first clamping portion (21), a first end of the limit frame (311) is hinged to the second clamping portion (22), a second end of the limit frame (311) is matched with the pushing member (31), and the pushing member (31) pushes the limit frame (311) to swing to push the second clamping portion (22) to switch between the open position and the clamping position.

3. The varicosity ligation apparatus according to claim 2, wherein the pushing member (31) comprises a pushing rod (313), a first sliding key (32) and a pushing hook (312), the pushing rod (313) is movably arranged in the operating handle (10) in a penetrating manner, the first sliding key (32) is slidably arranged on the outer side surface of the operating handle (10) and connected with a first end of the pushing rod (313), the pushing hook (312) is arranged in the placing concave part (11) and connected with a second end of the pushing rod (313), the pushing hook (312) is hung on a second end of the limiting frame (311), and a first avoiding hole (17) avoiding the pushing rod (313) is arranged in the operating handle (10).

4. The varicose ligation apparatus according to claim 3, wherein a through hole (221) is formed in the second clamping portion (22), an axis of the through hole (221) is perpendicular to a length direction of the operating handle (10), the position limiting frame (311) includes a pivot section (3111) swingably inserted into the through hole (221) and first and second connection sections (3112, 3113) respectively connected to both ends of the pivot section (3111), the position limiting frame (311) further includes a position limiting section (3114) spaced apart from the pivot section (3111) and connected to both the first and second connection sections (3112, 3113), the first connection section (3112), the second connection section (3) and the position limiting section (3114) are enclosed outside the first clamping portion (21), and the push hook (312) is hooked to the position limiting section (3114).

5. The varicose ligation device according to claim 3, wherein the first clamping portion (21) is provided with an anti-slip notch (212) on a side facing the placing recess (11), and when the second clamping portion (22) is in the clamping position, the second end of the limiting frame (311) is limited in the anti-slip notch (212).

6. The varicose ligation device according to claim 3, wherein the second clamping portion (22) further has an initial position closed with the first clamping portion (21), and the push hook (312) pushes the stopper frame (311) to swing and to switch the second clamping portion (22) between the initial position, the open position and the clamping position in sequence.

7. The varicose ligation instrument according to any one of claims 1 to 6, wherein a barb (211) is provided on a side of the first clamping portion (21) away from the second clamping portion (22), a stopper post (41) is floatably provided on the operating handle (10), the barb (211) hooks an edge of the operating handle (10), and the stopper post (41) is inserted into the first clamping portion (21) to stopper the first clamping portion (21) in the placement recess (11).

8. The varicose ligation device according to claim 7, wherein the operating handle (10) is provided with a receiving hole (12) for receiving the position-limiting post (41), an elastic member (42) is provided in the receiving hole (12), the varicose ligation device further comprises a pulling member (43) penetrating the operating handle (10), a first end of the pulling member (43) penetrates into the receiving hole (12) and is connected with the position-limiting post (41), the elastic member (42) applies elastic force to the position-limiting post (41) in a direction away from the pulling member (43), a second end of the pulling member (43) extends to the outside of the operating handle (10), and the pulling member (43) pulls the position-limiting post (41) so that the position-limiting post (41) has a stopping position for inserting into the first clamping portion (21) and an avoiding position for leaving the first clamping portion (21).

9. The varicosity ligation apparatus according to claim 8, wherein the pulling member (43) comprises a pulling wire (431) and a second sliding key (432) connected with the pulling wire (431), a second avoidance hole (13) for avoiding the pulling wire (431) is provided in the operating handle (10), a limit groove (14) communicated with the second avoidance hole (13) is provided on the outer side wall of the operating handle (10), the limit groove (14) comprises a first limit section (141) and a second limit section (142) arranged at an angle with the first limit section (141), the first end of the pulling wire (431) penetrates into the accommodating hole (12) and is connected with the limit post (41), the second end of the pulling wire (431) is connected with the second sliding key (432), the limit post (41) is in the limit position when the second end of the pulling wire (431) is pulled into the first limit section (141), and the second end of the pulling wire (431) is in the limit post (41) when the second end of the pulling wire (431) is pulled into the limit post (142).

10. The varicose ligation instrument according to claim 3,

a sliding groove (15) for the first sliding key (32) to be slidably arranged is further formed in the outer side wall of the operating handle (10), a locking hole (16) adjacent to the sliding groove (15) is further formed in the outer side wall of the operating handle (10), and a locking piece (44) matched with the locking hole (16) in a locking mode is arranged on the first sliding key (32) in a penetrating mode;

the first clamping part (21) is a first spherical segment, the second clamping part (22) is a second spherical segment, the section plane of the second spherical segment faces the section plane of the first spherical segment, the placing concave part (11) is a concave cambered surface matched with the spherical surface of the first spherical segment, and the concave cambered surface is an inclined end surface at one end of the operating handle (10);

be provided with first antiskid portion (23) on the section plane of first spherical scarce portion, be provided with second antiskid portion (24) on the section plane of second spherical scarce portion, first antiskid portion (23) with second antiskid portion (24) all with spacing frame (311) dodge to set up and all lie in same one side of spacing frame (311).

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