Varicose vein ligation device

Abstract

The present invention provides a varicose vein ligation instrument, comprising: a first operating rod, comprising a handle section and a curved section connected to the handle section, the first operating rod also comprising a terminal swung to one end of the curved section away from the handle section, the terminal having a puncture position swung to the inside of the curved section and a ligation position swung to the outside of the curved section, and a placement hole is arranged in one end of the terminal facing the curved section; a second operating rod, comprising an operating handle and a wire clamping part detachably connected to the operating handle, the wire clamping part being detachably arranged in the placement hole. The technical solution of the present application can solve the problem of complex operation of varicose vein ligation tools in the related art.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a varicose vein ligation device. Background Art

[0002] Varicose veins refer to the tortuosity and dilation of veins due to factors such as blood stasis and weak vein walls. Varicose veins can occur in many parts of the body. For example, hemorrhoids are actually a type of varicose veins. Other clinically visible varicose veins include esophageal and gastric fundus varicose veins, varicocele, and abdominal wall varicose veins. Varicose veins most often occur in the lower limbs. It is worth emphasizing that varicose veins are secondary manifestations of other diseases.

[0003] Varicose veins in the lower extremities can be treated by wearing elastic stockings, injecting sclerosants, and surgical stripping. For deep venous valve insufficiency, valve repair surgery and laparoscopic perforator ligation can be performed. Varicose veins in the lower extremities may also indicate the presence of other diseases, and the primary disease needs to be actively treated.

[0004] For varicose veins of the great saphenous vein or the small saphenous vein, the great saphenous vein starts from the medial end of the dorsal venous arch of the foot, passes in front of the medial malleolus, ascends along the medial edge of the calf with the saphenous nerve, passes about 2 cm behind the medial femoral condyle, enters the medial thigh, accompanies the medial femoral cutaneous nerve, gradually moves forward and upward, passes through the saphenous vein hiatus below the pubic tubercle, and joins the femoral vein. Its joining point is called the saphenofemoral point. The small saphenous vein is one of the main superficial veins of the calf. The small saphenous vein is on the outside of the foot, starting from the dorsal venous arch of the foot, passes behind the lateral malleolus, ascends along the back of the calf, passes between the medial and lateral ends of the gastrocnemius muscle to the popliteal fossa, and penetrates the fascia to inject into the popliteal vein. This vein has many small branches in its course that anastomose with the branches of the great saphenous vein. Due to the relationship of power, the return of the small saphenous vein is easily obstructed, and varicose veins are prone to occur. Some may form thrombosis and thromboangiitis; after the varicose veins rupture, a calf ulcer is formed, which does not heal for a long time.

[0005] There are currently three treatment options for varicose veins of the great saphenous vein or the small saphenous vein:

[0006] The first is traditional stripping, which has the advantage of being able to be solved under direct vision and with a definite effect. However, it requires incision, which results in a large wound surface, slow recovery, and easy infection. The second is radiofrequency, laser, or minimally invasive surgery, which has a quick recovery, but has the disadvantage of being unable to accurately close the main veins with a diameter of more than 14 mm and is expensive. The third is sclerosing agents or glue, but the closure effect on the main veins is not definite, and it is very likely to cause the sclerosing agent or glue to enter the lungs through the trunk.

[0007] In order to solve the above problems, the authorization announcement number CN211723306U of the Chinese utility model patent discloses a varicose vein ligation tool, which includes a catheter, a guide wire assembly and a sheath. The end of the catheter can be movably located around the main vein of the varicose vein, so that an operating space is formed around the main vein. The guide wire assembly is removably inserted into the catheter, and the guide wire assembly includes a first guide wire, a second guide wire, and a ligation structure connecting the first guide wire and the second guide wire, and the ligation structure is located in the operating space. The sheath is removably sleeved outside the second guide wire. In the operating space, the movable catheter allows the end of the catheter to adjust the ligation structure to be ligated on the main vein.

[0008] However, in the process of ligating varicose veins using the above-mentioned ligation tool, the first guide wire is pushed out by the catheter in the sheath after bypassing the main vein, which makes the operation complicated. Summary of the invention

[0009] The main purpose of the present invention is to provide a varicose vein ligation device to solve the problem of complex operation of varicose vein ligation tools in related technologies.

[0010] In order to achieve the above-mentioned purpose, the present invention provides a varicose vein ligation instrument, comprising: a first operating rod, comprising a handle section and a curved section connected to the handle section, the first operating rod also comprising an end head swingably connected to an end of the curved section away from the handle section, the end head having a puncture position swinging toward the inside of the curved section and a ligation position swinging toward the outside of the curved section, and a placement hole is arranged in one end of the end head facing the curved section; a second operating rod, comprising an operating handle and a wire clamping part detachably connected to the operating handle, the wire clamping part being detachably arranged in the placement hole.

[0011] Furthermore, the end of the curved section away from the handle section includes a first limiting surface and a second limiting surface arranged at an angle to the first limiting surface, and the end of the end facing the curved section has a mating surface, and when the mating surface contacts the first limiting surface, the end is in a puncture position, and when the mating surface contacts the second limiting surface, the end is in a ligation position.

[0012] Furthermore, a connecting plate is provided on the first limiting surface, and an avoidance groove for avoiding the connecting plate is provided on the end head. The end head is hinged to the connecting plate through a connecting shaft, the axis of the connecting shaft is perpendicular to the axis of the handle section, and the surface of the end of the end away from the bending section is a curved structure.

[0013] Furthermore, a guide hole corresponding to the placement hole is arranged on the handle section, and when the end is in the ligation position, the guide hole is coaxially arranged with the placement hole, and the second operating rod can movably pass through the guide hole.

[0014] Furthermore, the wire clamping part includes a cylinder and a wire clamp arranged on the side wall of the cylinder, and an accommodating groove for accommodating the wire clamp is arranged on the outer side wall of the cylinder. The cylinder is detachably connected to one end of the operating handle.

[0015] Furthermore, one end of the operating handle is inserted into the cylinder and connected to the cylinder via a first clamping structure; and / or the cylinder is connected to the placement hole via a second clamping structure.

[0016] Furthermore, the ligation instrument also includes an adjustment member movably arranged on the handle section and an adjustment line connecting the adjustment member and the end, and the adjustment member drives the adjustment line to move so that the end can switch between the puncture position and the ligation position.

[0017] Furthermore, the end includes a first connecting part and a second connecting part that are arranged opposite to each other, the first connecting part is connected to a first fastener, the second connecting part is connected to a second fastener, and the adjustment line includes a first line segment connecting the first connecting part and the adjusting member and a second line segment connecting the second connecting part and the adjusting member.

[0018] Furthermore, a first lead wire channel and a second lead wire channel are arranged at intervals in the curved section, the first wire segment passes through the first lead wire channel, and the second wire segment passes through the second lead wire channel; and / or a wire avoidance groove connected to the placement hole is arranged on the end.

[0019] Furthermore, the adjusting member includes a winding segment and a threaded segment connected to the winding segment, and a screw hole for the threaded segment to penetrate is provided on the operating handle.

[0020] By applying the technical solution of the present invention, the ligation instrument for varicose veins includes: a first operating rod and a second operating rod, wherein the first operating rod includes a handle section and a curved section connected to the handle section. The first operating rod also includes a terminal that is swingably connected to one end of the curved section away from the handle section. The terminal has a puncture position that swings toward the inside of the curved section and a ligation position that swings toward the outside of the curved section. A placement hole is provided in one end of the terminal facing the curved section. The second operating rod includes an operating handle and a wire clamping portion that is detachably connected to the operating handle. The wire clamping portion is detachably provided in the placement hole. The wire clamping portion is first removed from the operating handle, and the wire clamping portion clamps the lead wire and is located in the placement hole. Under ultrasound guidance, a catheter can be used to puncture a portion of the skin, and the head of the catheter can be inserted into the periphery of the main vein trunk of varicose veins. Paralytic swelling fluid is injected through the catheter to form an operating space around the main vein trunk, so that minimally invasive surgery can be performed in the operating space. When the terminal is in the puncture position, operate the handle section of the first operating rod, so that the wire clamping part located in the placement hole carries the lead wire, and then the terminal is inserted into the operation space from the puncture of the skin, and bypasses from the bottom of the main vein. At this time, the main vein is located in the curved section, and the terminal is located next to the main vein. When the terminal swings from the puncture position to the ligation position, the operating handle is extended from the puncture of the skin, so that the operating handle and the wire clamping part are installed together, and then the operating handle is pulled, so that the operating handle drives the wire clamping part and the lead wire on the wire clamping part to move together. The operation is convenient, and there is no need to adjust the ligation structure and the first guide wire at the end of the movable catheter in the related art. The operating handle can bring the lead wire on the wire clamping part out of the puncture of the skin, and the lead wire can be quickly ligated on the main vein to form a ligation to complete the ligation operation. Therefore, the technical solution of the present application can solve the problem of complex operation of the ligation tool for varicose veins in the related art. Moreover, when minimally invasive surgery is used, the varicose vein ligation device can tighten the main vein trunk and achieve a clear ligation, thereby achieving a definite closure effect after varicose vein treatment. In addition, only one wound is left on the skin, which causes less harm to the human body and improves the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the exploded structure of an embodiment of the varicose vein ligation device according to the present invention when the curved section is in the ligation position;

[0023] Figure 2 Shows Figure 1 An enlarged schematic diagram of the varicose vein ligation device at point A;

[0024] Figure 3 Shows Figure 1An exploded schematic diagram of a second operating rod of a varicose vein ligation instrument;

[0025] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of an adjusting member of a varicose vein ligation device;

[0026] Figure 5 Shows Figure 1 A schematic diagram of a partially exploded structure of a varicose vein ligation device when the curved section is in a puncture position;

[0027] Figure 6 Shows Figure 5 An enlarged schematic diagram of the B portion of the varicose vein ligation device;

[0028] Figure 7 Shows Figure 1 A schematic diagram of the three-dimensional structure of a handle section and a curved section of a varicose vein ligation instrument;

[0029] Figure 8 Shows Figure 1 Schematic diagram of the three-dimensional structure of the end of the varicose vein ligation instrument.

[0030] The above drawings include the following reference numerals:

[0031] 1. Lead wire; 10. First operating rod; 11. Handle section; 111. Guide hole; 12. Bend section; 121. First limiting surface; 122. Second limiting surface; 123. Connecting piece; 124. First lead wire channel; 125. Second lead wire channel; 13. Terminal; 131. Matching surface; 132. First fastener; 133. Second fastener; 134. Avoiding groove; 135. Avoiding groove; 14. Placement hole; 20. Second operating rod; 2 1. operating handle; 22. wire clamping part; 211. screw hole; 221. cylinder; 222. wire clamp; 223. accommodating groove; 31. connecting shaft; 41. first clamping structure; 411. first clamping groove; 412. first protrusion; 42. second clamping structure; 421. second clamping groove; 422. second protrusion; 51. adjusting member; 511. winding segment; 512. threaded segment; 52. adjusting wire; 521. first wire segment; 522. second wire segment. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] like Figures 1 to 8 As shown, the varicose vein ligation instrument of this embodiment includes: a first operating rod 10 and a second operating rod 20. The first operating rod 10 includes a handle section 11 and a curved section 12 connected to the handle section 11, and the first operating rod 10 also includes a terminal 13 swingably connected to one end of the curved section 12 away from the handle section 11, and the terminal 13 has a puncture position swinging toward the inside of the curved section 12 and a ligation position swinging toward the outside of the curved section 12, and a placement hole 14 is provided in one end of the terminal 13 facing the curved section 12. The second operating rod 20 includes an operating handle 21 and a wire clamping portion 22 detachably connected to the operating handle 21, and the wire clamping portion 22 is detachably arranged in the placement hole 14.

[0036] By applying the technical solution of this embodiment, the end 13 has a puncture position that swings toward the inside of the curved section 12 and a ligation position that swings toward the outside of the curved section 12. A placement hole 14 is provided in one end of the end 13 that faces the curved section 12. The second operating rod 20 includes an operating handle 21 and a wire clamping portion 22 that is detachably connected to the operating handle 21. The wire clamping portion 22 is detachably provided in the placement hole 14. First, the wire clamping portion 22 is removed from the operating handle 21, and the wire clamping portion 22 clamps the lead wire 1 in the placement hole 14. Under ultrasound guidance, a catheter can be used to puncture a portion of the skin, and the head of the catheter is inserted into the periphery of the varicose vein trunk. Paralytic swelling fluid is injected through the catheter to form an operating space around the venous trunk, which facilitates minimally invasive surgery in the operating space. When the terminal 13 is in the puncture position, the handle section 11 of the first operating rod 10 is operated to make the clamping part 22 located in the placement hole 14 carry the lead 1, and then the terminal 13 is inserted into the operating space from the puncture site of the skin and bypasses from the bottom of the venous trunk. At this time, the venous trunk is located in the curved section 12, and the terminal 13 is located next to the venous trunk. When the terminal 13 swings from the puncture position to the ligation position, the operating handle 21 is extended from the puncture site of the skin, so that the operating handle 21 and the clamping part 22 are installed together, and then the operating handle 21 is pulled, so that the operating handle 21 drives the clamping part 22 and the lead 1 on the clamping part 22 to move together. The operation is convenient, and there is no need to adjust the ligation structure and the first guide wire at the end of the movable catheter like the related technology. The operating handle 21 can bring the lead 1 on the clamping part 22 out of the puncture site of the skin, and the lead 1 can be quickly ligated on the venous trunk to form a ligation to complete the ligation operation. Therefore, the technical solution of this embodiment can solve the problem of complicated operation of varicose vein ligation tools in the related art. Moreover, when minimally invasive surgery is adopted, the varicose vein ligation instrument can tighten the main vein trunk to achieve clear ligation, and then the varicose vein treatment has a definite closure effect. Moreover, only one wound is left on the skin, which causes less harm to the human body and improves the safety of the operation. The above-mentioned paralysis swelling fluid includes 0.9% normal saline, 2% lidocaine, 1% epinephrine and 5% sodium bicarbonate.

[0037] like Figures 1 to 6 As shown, the end of the curved section 12 away from the handle section 11 includes a first limiting surface 121 and a second limiting surface 122 arranged at an angle to the first limiting surface 121. The end of the terminal 13 facing the curved section 12 has a matching surface 131, and when the matching surface 131 contacts the first limiting surface 121, the terminal 13 is placed in a puncture position. In this way, the terminal 13 is prevented from continuing to swing. When the matching surface 131 contacts the second limiting surface 122, the terminal 13 is placed in a ligation position, so that the terminal 13 is prevented from continuing to swing. In order to improve the stability of the limiting, the first limiting surface 121, the second limiting surface 122 and the matching surface 131 are preferably planes.

[0038] like Figures 1 to 6 As shown, in order to facilitate the end head 13 to swing inside and outside the curved section 12, a connecting piece 123 is provided on the first limiting surface 121, and an avoidance groove 135 for avoiding the connecting piece 123 is provided on the end head 13. The end head 13 is hinged to the connecting piece 123 through a connecting shaft 31, and the axis of the connecting shaft 31 is perpendicular to the axis of the handle section 11. In order to reduce the resistance of the end head 13 during the insertion process or the main vein sliding into the curved section 12, the surface of the end of the end head 13 away from the curved section 12 is a curved surface structure.

[0039] like Figures 1 to 6 As shown, the handle section 11 is provided with a guide hole 111 corresponding to the placement hole 14. When the end 13 is in the ligation position, the guide hole 111 is coaxially arranged with the placement hole 14, and the second operating rod 20 can movably pass through the guide hole 111, so that the operating handle 21 can be inserted into or moved out along the guide hole 111, and because the guide hole 111 is coaxially arranged with the placement hole 14 when the end 13 is in the ligation position, the operating handle 21 can be directly installed with the wire clamping part 22 after being inserted into the guide hole 111, and the wire clamping part 22 can be moved out together along the guide hole 111 after installation, thereby improving the convenience of operation.

[0040] like Figures 1 to 6 As shown, the wire clamping portion 22 includes a cylinder 221 and a wire clamp 222 arranged on the side wall of the cylinder 221. A receiving groove 223 for receiving the wire clamp 222 is arranged on the outer side wall of the cylinder 221. The cylinder 221 is detachably connected to one end of the operating handle 21. In this way, when the cylinder 221 is located in the placement hole 14, the receiving groove 223 can accommodate the wire clamp 222, avoiding interference between the wire clamp 222 and the hole side wall of the placement hole 14, and the arrangement of the cylinder 221 facilitates the detachable connection of one end of the operating handle 21. The wire clamping portion 22 is preferably an elastic arm, and one end of the elastic arm is welded to the groove end wall of the receiving groove 223. An angle of less than 10 degrees is formed between the elastic arm and the groove side wall of the receiving groove 223, so that the lead 1 can be clamped between the elastic arm and the groove side wall of the receiving groove 223.

[0041] like Figures 1 to 6 As shown, in order to improve the convenience of disassembly and assembly, one end of the operating handle 21 is inserted into the cylinder 221 and connected to the cylinder 221 through a first clamping structure 41. The cylinder 221 is connected to the placement hole 14 through a second clamping structure 42. Specifically, the first clamping structure 41 includes a first clamping groove 411 and a first protrusion 412 clamped with the first clamping groove 411, the first clamping groove 411 is arranged on the inner side wall of the cylinder 221, and the first protrusion 412 is arranged on one end of the operating handle 21; the second clamping structure 42 includes a second clamping groove 421 and a second protrusion 422 clamped with the second clamping groove 421, the second clamping groove 421 is arranged on the inner side wall of the placement hole 14, and the second protrusion 422 is arranged on the outer side wall of the cylinder 221.

[0042] Of course, in an embodiment not shown in the figure, one end of the operating handle is inserted into the cylinder and connected to the cylinder via a first clamping structure. The cylinder and the placement hole can be connected via a second clamping structure.

[0043] like Figures 1 to 6 As shown, the ligation instrument further includes an adjustment member 51 movably disposed on the handle section 11 and an adjustment line 52 connecting the adjustment member 51 and the terminal 13. The adjustment member 51 drives the adjustment line 52 to move so that the terminal 13 switches between the puncture position and the ligation position. The movement of the adjustment member 51 can adjust the number of turns of the adjustment line 52 to be larger or smaller so that the terminal 13 switches between the puncture position and the ligation position.

[0044] like Figures 1 to 8 As shown, the terminal 13 includes a first connection part and a second connection part that are arranged opposite to each other, a first fastener 132 is connected in the first connection part, and a second fastener 133 is connected in the second connection part. The adjustment line 52 includes a first line segment 521 connecting the first connection part and the adjustment member 51 and a second line segment 522 connecting the second connection part and the adjustment member 51. The first fastener 132 can fix the first line segment 521 in the first connection part, and the second fastener 133 can fix the second line segment 522 in the second connection part. Specifically, the first connection part is a first countersunk hole, the first fastener 132 is a first countersunk screw, the second connection part is a second countersunk hole, and the second fastener 133 is a second countersunk screw. In this way, the outer surface of the terminal 13 is smooth.

[0045] In this embodiment, the adjusting member 51 drives the first line segment 521 to move, so that the terminal 13 switches from the ligation position to the puncture position, and then the first line segment 521 can be tightened, so that the terminal 13 can be kept in the puncture position, so as to ensure that the terminal 13 enters the operation space and bypasses from the bottom of the main vein. The reverse direction adjusting member 51 drives the second line segment 522 to move, so that the terminal 13 switches from the puncture position to the ligation position, and then the second line segment 522 can be tightened, so that the terminal 13 can be kept in the ligation position. The terminal 13 does not move, which facilitates the installation of the operating handle 21 and the clamping part 22 in the placement hole 14, and enables the clamping part 22 and the lead 1 to leave the placement hole 14 together with the operating handle 21.

[0046] like Figures 1 to 8As shown, in order to facilitate the movement of the first wire segment 521 and not interfere with the main vein in the curved segment 12 when in a taut state, a first lead wire channel 124 and a second lead wire channel 125 are arranged at intervals in the curved segment 12. The first wire segment 521 passes through the first lead wire channel 124. In order to facilitate the movement of the second wire segment 522 and not interfere with the human tissue outside the operation space when in a taut state, the second wire segment 522 passes through the second lead wire channel 125. The terminal 13 is provided with a wire avoidance groove 134 connected to the placement hole 14. In this way, the lead wire 1 can be clamped by the wire clamping portion 22 in the placement hole 14 after passing through the wire avoidance groove 134 after passing through the second lead wire channel 125.

[0047] like Figures 1 to 7 As shown, the adjusting member 51 includes a winding segment 511 and a threaded segment 512 connected to the winding segment 511, and a screw hole 211 is provided on the operating handle 21 for the threaded segment 512 to penetrate. The cooperation between the threaded segment 512 and the screw hole 211 facilitates the movement of the adjusting member 51. The winding segment 511 can be wound with multiple turns of the lead wire 1, which is convenient for driving the adjustment wire 52 to move. The winding segment 511 includes a first stop segment, a cylindrical segment and a second stop segment connected in sequence, and the first stop segment is connected to the threaded segment 512. Multiple turns of the lead wire 1 are wound on the cylindrical segment, and the first stop segment and the second stop segment can limit the movement of the lead wire 1 along the axis of the cylindrical segment.

[0048] After the ligation operation is completed using the varicose vein ligation device of this embodiment, a catheter is used to pierce the position of the other end opposite to the ligation of the main vein, and a radiofrequency catheter (not shown in the figure) is used to penetrate into the main vein from the other end opposite to the ligation of the main vein. The radiofrequency catheter is used to heat the main vein, and the heat of the radiofrequency catheter is transferred to the inner wall of the main vein to shrink the inner wall of the main vein. The radiofrequency catheter is withdrawn so that the inner wall of the main vein can be in a closed state. When the main vein is in a closed state, the blood in the main vein will reflow to other healthy veins. Of course, after the ligation operation is completed using the varicose vein ligation device of this embodiment, a hardener treatment can also be performed at the position of the other end opposite to the ligation of the main vein.

[0049] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0051] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A varicose vein ligation device, characterized in that: include: A first operating rod (10) comprises a handle section (11) and a curved section (12) connected to the handle section (11); the first operating rod (10) further comprises an end head (13) swingably connected to an end of the curved section (12) away from the handle section (11); the end head (13) has a puncture position swinging toward the inside of the curved section (12) and a ligation position swinging toward the outside of the curved section (12); and a placement hole (14) is provided in one end of the end head (13) facing the curved section (12); A second operating rod (20) comprises an operating handle (21) and a wire clamping portion (22) detachably connected to the operating handle (21), wherein the wire clamping portion (22) is detachably disposed in the placement hole (14); The end of the curved section (12) away from the handle section (11) comprises a first limiting surface (121) and a second limiting surface (122) arranged at an angle to the first limiting surface (121); the end of the end head (13) facing the curved section (12) comprises a matching surface (131); when the matching surface (131) contacts the first limiting surface (121), the end head (13) is placed in the puncture position; and when the matching surface (131) contacts the second limiting surface (122), the end head (13) is placed in the ligation position; The wire clamping portion (22) comprises a cylinder (221) and a wire clamp (222) arranged on a side wall of the cylinder (221); an accommodating groove (223) for accommodating the wire clamp (222) is arranged on the outer side wall of the cylinder (221); the cylinder (221) is detachably connected to one end of the operating handle (21); One end of the operating handle (21) is inserted into the cylinder (221) and connected to the cylinder (221) via a first clamping structure (41); and / or the cylinder (221) is connected to the placement hole (14) via a second clamping structure (42); The ligation instrument further comprises an adjustment member (51) movably arranged on the handle section (11) and an adjustment line (52) connected to the adjustment member (51) and the end head (13); the adjustment member (51) drives the adjustment line (52) to move so that the end head (13) switches between the puncture position and the ligation position.

2. The ligation instrument according to claim 1, characterized in that: A connecting piece (123) is provided on the first limiting surface (121), and an avoidance groove (135) for avoiding the connecting piece (123) is provided on the end head (13). The end head (13) is hinged to the connecting piece (123) via a connecting shaft (31), the axis of the connecting shaft (31) is perpendicular to the axis of the handle section (11), and the surface of one end of the end head (13) away from the bending section (12) is a curved structure.

3. The ligation instrument according to claim 1 or 2, characterized in that: The handle section (11) is provided with a guide hole (111) corresponding to the placement hole (14); when the end head (13) is in the ligation position, the guide hole (111) is coaxially arranged with the placement hole (14); and the second operating rod (20) can movably pass through the guide hole (111).

4. The ligation instrument according to claim 1, characterized in that: The end head (13) comprises a first connecting portion and a second connecting portion arranged opposite to each other, the first connecting portion is internally connected to a first fastener (132), the second connecting portion is internally connected to a second fastener (133), and the adjustment line (52) comprises a first line segment (521) connecting the first connecting portion and the adjustment member (51) and a second line segment (522) connecting the second connecting portion and the adjustment member (51).

5. The ligation instrument according to claim 4, characterized in that: A first lead wire channel (124) and a second lead wire channel (125) are arranged at intervals in the curved section (12), the first wire segment (521) passes through the first lead wire channel (124), and the second wire segment (522) passes through the second lead wire channel (125); and / or a wire avoidance groove (134) connected to the placement hole (14) is arranged on the end head (13).

6. The ligation instrument according to claim 5, characterized in that: The adjusting member (51) comprises a winding section (511) and a threaded section (512) connected to the winding section (511), and the operating handle (21) is provided with a screw hole (211) for the threaded section (512) to penetrate.

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