CN114469233A - Ligation instrument for varicosity - Google Patents

Abstract

The invention provides a ligation instrument for varicosity, comprising: the first operating rod comprises a handle section and a bending section connected with the handle section, and also comprises an end head which is connected with one end of the bending section far away from the handle section in a swinging manner, the end head is provided with a puncture position swinging towards the inside of the bending section and a ligation position swinging towards the outside of the bending section, and a placing hole is formed in one end of the end head facing the bending section; the second operating rod comprises an operating handle and a wire clamping part detachably connected with the operating handle, and the wire clamping part is detachably arranged in the placing hole. The technical scheme of this application can solve the ligature instrument operation complicated problem of varicosity among the relevant art.

Description

Ligation instrument for varicosity

Technical Field

The invention relates to the field of medical instruments, in particular to a varicosity ligation instrument.

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, such as hemorrhoids, which are actually varicose veins, and clinically visible varicose veins of the esophagus and the stomach, spermatic varicose veins, abdominal wall varicose veins and the like. 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 at the lateral side of foot, starts from the arch of dorsal venous of foot, runs upward along the back of lower leg after the lateral malleolus, passes through the calf muscle and between the outer two ends to the popliteal fossa, and is injected into the 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 dynamic relationship, the small saphenous vein is easy to block, most of the venous return is easy to generate varicosity, and some of the venous return can form thrombus and generate thromboangiitis; leg ulcer is formed after the varicose vein is broken and cannot be healed for a long time.

The following three treatment modalities are currently included for either major or minor varicose veins:

the first traditional stripping method has the advantages of direct vision solution and definite effect. But needs to be cut open, the wound surface is too large, the recovery is slow, and the infection is easy; 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, but the effect is not exact for venous trunk closure and it is likely to cause the sclerosing agent or glue to pass through the trunk into the lungs.

In order to solve the above problems, the granted publication No. CN211723306U of the chinese utility model discloses a ligation tool for varicose vein, which comprises a catheter, a guide wire assembly and a sheath tube. The end of the catheter is movably positioned around the trunk of the varicose vein so that an operating space is formed around the trunk. The guide wire component is removably arranged in the catheter in a penetrating mode, the guide wire component comprises a first guide wire and a second guide wire, the ligation structure between the first guide wire and the second guide wire is connected with the second guide wire, and the ligation structure is located in the operation space. The sheath tube is removably sleeved outside the second guide wire. Within the operating space, the movable catheter causes the end adjustment ligation structure of the catheter to ligate to the main vein trunk.

However, in the ligation using the ligation tool for varicose veins, the first guide wire is pushed out of the sheath tube through the main trunk of the vein, and the operation is complicated.

Disclosure of Invention

The invention mainly aims to provide a ligation instrument for varicose veins, which solves the problem that the operation of a ligation tool for varicose veins in the related art is complicated.

In order to achieve the above object, the present invention provides a varicose ligation apparatus including: the first operating rod comprises a handle section and a bending section connected with the handle section, and also comprises an end head which is connected with one end of the bending section far away from the handle section in a swinging manner, the end head is provided with a puncture position swinging towards the inside of the bending section and a ligation position swinging towards the outside of the bending section, and a placing hole is formed in one end of the end head facing the bending section; the second operating rod comprises an operating handle and a wire clamping part detachably connected with the operating handle, and the wire clamping part is detachably arranged in the placing hole.

Furthermore, the one end that the handle section was kept away from to crooked section includes first spacing face and the spacing face of second that becomes angle setting with first spacing face, and the end has the fitting surface towards the one end of crooked section, so that the end is in the puncture position when the fitting surface contacts with first spacing face, so that the end is in the ligature position when the fitting surface contacts with the spacing face of second.

Further, be provided with the connection piece on the first spacing face, be provided with the groove of dodging the connection piece on the end, the end articulates in the connection piece through the connecting axle, the axis of connecting axle perpendicular to handle section's axis, the surface that the one end of bending section was kept away from to the end is the curved surface structure.

Furthermore, the handle section is provided with a guide hole corresponding to the placing hole, the guide hole and the placing hole are coaxially arranged when the end is located at the ligation position, and the second operating rod movably penetrates through the guide hole.

Further, press from both sides line portion including the barrel and set up with the fastener on the barrel lateral wall, be provided with the holding tank that holds the fastener on the lateral wall of barrel, the barrel is connected with the one end detachably of handle.

Furthermore, one end of the operating handle penetrates through the cylinder body and is connected with the cylinder body through a first clamping structure; and/or the barrel is connected with the placing hole through a second clamping structure.

Furthermore, the ligation apparatus further comprises an adjusting piece movably arranged on the handle section and an adjusting wire connected with the adjusting piece and the end head, and the adjusting piece drives the adjusting wire to move so that the end head is switched between the puncture position and the ligation position.

Further, the end includes relative first connecting portion and the second connecting portion that sets up, and first connecting portion in-connection has first fastener, and second connecting portion in-connection has the second fastener, and the regulation line is including connecting the first line segment between first connecting portion and the regulating part and connecting the second line segment between second connecting portion and the regulating part.

Furthermore, a first lead channel and a second lead channel are arranged in the bending section at intervals, the first line section penetrates through the first lead channel, and the second line section penetrates through the second lead channel; and/or the end head is provided with a wire avoiding groove communicated with the placing hole.

Furthermore, the adjusting part comprises a winding section and a thread section connected with the winding section, and a screw hole for the thread section to penetrate through is formed in the operating handle.

By applying the technical scheme of the invention, the ligation apparatus for varicose veins comprises: the first operating rod comprises a handle section and a bending section connected with the handle section. The first operating rod further comprises an end head which is connected with one end, far away from the handle section, of the bending section in a swinging mode. The tip has a puncturing position that swings toward the inside of the curved section and a ligating position that swings toward the outside of the curved section. A placing hole is arranged in one end of the end head facing the bending section. The second operating rod comprises an operating handle and a wire clamping part detachably connected with the operating handle. The wire clamping part is detachably arranged in the placing hole. The wire clamping part is firstly detached from the operating handle, and the wire clamping part clamps the lead wire and is positioned in the placing hole. Under ultrasound guidance, a catheter may be used to pierce a site of the skin, with the head of the catheter penetrating the periphery of the trunk of the varicose vein. Paralytic tumescent liquid is injected through the catheter to form an operation space around the main vein trunk, so that minimally invasive surgery can be conveniently performed in the operation space. When the end head is positioned at the puncture position, the handle section of the first operating rod is operated to lead the wire clamping part positioned in the placing hole to carry the lead wire, and then the end head is punctured into the operating space from the puncture position of the skin, and is wound from the lower part of the vein trunk, the vein trunk is positioned in the bending section, the end is positioned beside the vein trunk, when the end swings and is switched from the puncture position to the ligation position, the operating handle is extended from the puncture position of the skin, so that the operating handle and the thread clamping part are installed together, and then pulling the operating handle, make the operating handle drive the lead wire on double-layered line portion and the double-layered line portion and remove together, convenient operation need not to make the tip of pipe adjust ligature structure and first seal wire like the activity pipe among the correlation technique, and the operating handle can be with the lead wire on the double-layered line portion take out the puncture department of skin in the lump, and the lead wire can ligate on the vein trunk fast, forms the ligature in order to accomplish the ligature operation. Therefore, the technical scheme of the application can solve the problem that the operation of the ligation tool for varicose veins in the related art is complicated. In addition, when a minimally invasive surgery is adopted, the main vein trunk can be tied through the varicosity tying instrument, so that definite tying is realized, and further, the varicosity can be exactly closed after treatment. And only one wound is left on the skin, so that the injury to the human body is small, and the safety of the operation is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates an exploded view of a curved segment of an embodiment of a varicose ligation instrument according to the present invention in a ligation position;

FIG. 2 shows an enlarged schematic view at A of the varicose ligation instrument of FIG. 1;

FIG. 3 illustrates an exploded view of a second lever of the varicose ligation instrument of FIG. 1;

FIG. 4 illustrates a perspective view of an adjustment member of the varicose ligation instrument of FIG. 1;

FIG. 5 illustrates a partially exploded view of the curved segment of the varicose ligation instrument of FIG. 1 in a puncturing position;

FIG. 6 shows an enlarged schematic view at B of the varicose ligation instrument of FIG. 5;

FIG. 7 illustrates a perspective view of a handle segment and a curved segment of the varicose ligation instrument of FIG. 1;

fig. 8 shows a perspective view of the tip of the varicose ligation instrument of fig. 1.

Wherein the figures include the following reference numerals:

1. a lead wire; 10. a first operating lever; 11. a handle section; 111. a guide hole; 12. a curved section; 121. a first limiting surface; 122. a second limiting surface; 123. connecting sheets; 124. a first lead channel; 125. a second lead channel; 13. a tip; 131. a mating surface; 132. a first fastener; 133. a second fastener; 134. a line avoiding groove; 135. an avoidance groove; 14. placing holes; 20. a second operating lever; 21. an operating handle; 22. a wire clamping part; 211. a screw hole; 221. a barrel; 222. wire clamps; 223. accommodating grooves; 31. a connecting shaft; 41. a first clamping structure; 411. a first card slot; 412. a first protrusion; 42. a second clamping structure; 421. a second card slot; 422. a second protrusion; 51. an adjustment member; 511. winding the wire section; 512. a threaded segment; 52. an adjustment line; 521. a first line segment; 522. a second line segment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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.

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 unless specifically stated otherwise. 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 exemplary only and not as 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, it need not be discussed further in subsequent figures.

As shown in fig. 1 to 8, the ligation instrument for varicose veins of the present embodiment includes: a first operating lever 10 and a second operating lever 20. The first operating rod 10 comprises a handle section 11 and a bending section 12 connected with the handle section 11, the first operating rod 10 further comprises a tip 13 which is connected with one end, far away from the handle section 11, of the bending section 12 in a swinging mode, the tip 13 is provided with a puncturing position swinging towards the inside of the bending section 12 and a ligation position swinging towards the outside of the bending section 12, and a placing hole 14 is formed in one end, facing the bending section 12, of the tip 13. The second operating lever 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 disposed in the placement hole 14.

With the solution according to the present embodiment, the tip 13 has a piercing position oscillating towards the inside of the curved segment 12 and a ligation position oscillating towards the outside of the curved segment 12. A placement opening 14 is provided in the end of the head 13 facing the bending section 12. The second lever 20 includes an operation handle 21 and a wire clamping portion 22 detachably connected to the operation handle 21. The clipping portion 22 is detachably provided in the placing hole 14. The wire clamping portion 22 is detached from the operation handle 21, and the wire clamping portion 22 clamps the lead wire 1 and locates in the placing hole 14. Under ultrasound guidance, a catheter may be used to pierce a site of the skin, with the head of the catheter penetrating the periphery of the trunk of the varicose vein. Paralytic tumescent liquid is injected through the catheter to form an operation space around the main vein trunk, so that minimally invasive surgery can be conveniently performed in the operation space. When the end head 13 is at the puncture position, the handle section 11 of the first operating rod 10 is operated to enable the suture clamping part 22 located in the placing hole 14 to carry the leading wire 1, the end head 13 is penetrated into the operating space from the puncture position of the skin and bypasses from the lower part of the vein trunk, the vein trunk is located in the bending section 12 at the moment, the end head 13 is located beside the vein trunk, when the end head 13 swings and is switched from the puncture position to the ligation position, the operating handle 21 extends into the operating handle 21 from the puncture position of the skin, the operating handle 21 and the suture clamping part 22 are installed together, the operating handle 21 is further pulled, the operating handle 21 drives the suture clamping part 22 and the leading wire 1 on the suture clamping part 22 to move together, the operation is convenient, the ligation structure and the first guide wire are adjusted at the end part of the catheter like a movable catheter in the related technology, the operating handle 21 can bring the leading wire 1 on the suture clamping part 22 out of the puncture position of the skin together, and the leading wire 1 can be quickly ligated on the vein, ligation is formed to complete the ligation operation. Therefore, the technical scheme of the embodiment can solve the problem that the operation of the ligation tool for varicose veins in the related art is complicated. In addition, when a minimally invasive surgery is adopted, the main vein trunk can be tied through the varicosity tying instrument, so that definite tying is realized, and further, the varicosity can be exactly closed after treatment. And only one wound is left on the skin, so that the injury to the human body is small, and the safety of the operation is improved. The palsy swelling solution comprises 0.9% of normal saline, 2% of lidocaine, 1% of epinephrine and 5% of sodium bicarbonate.

As shown in fig. 1 to 6, one end of the bending section 12 away from the handle section 11 includes a first position-limiting surface 121 and a second position-limiting surface 122 disposed at an angle to the first position-limiting surface 121. The end of the tip 13 facing the bending section 12 has a mating surface 131, and the mating surface 131 contacts the first stopper surface 121 to place the tip 13 in the puncturing position. In this way, the tip 13 is prevented from continuing to oscillate. The mating surface 131 contacts the second stopper surface 122 to keep the tip 13 in the ligation position, thereby preventing the tip 13 from further swinging. For the purpose of improving the stability of the position limitation, the first position limitation surface 121, the second position limitation surface 122 and the matching surface 131 are preferably planar.

As shown in fig. 1 to 6, in order to facilitate the end 13 to swing towards the inside of the bending section 12 and swing towards the outside of the bending section 12, a connecting piece 123 is arranged on the first limiting surface 121, an avoiding groove 135 for avoiding the connecting piece 123 is arranged on the end 13, the end 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 tip 13 to the penetration process or the sliding of the vein trunk into the curved section 12, the surface of the tip 13 at the end away from the curved section 12 is curved.

As shown in fig. 1 to 6, the handle segment 11 is provided with a guide hole 111 corresponding to the placement hole 14. Guide hole 111 and the coaxial setting of placing hole 14 when end 13 is in the ligature position, second action bars 20 movably passes through guide hole 111, and operation handle 21 can penetrate or shift out along guide hole 111 like this, and because guide hole 111 and the coaxial setting of placing hole 14 when end 13 is in the ligature position, operation handle 21 can directly install with double-layered line portion 22 after penetrating along guide hole 111, can shift out double-layered line portion 22 along guide hole 111 in the lump after the installation, has improved the convenience of operation.

As shown in fig. 1 to 6, the wire clamping portion 22 includes a cylinder 221 and a wire clamp 222 disposed on a sidewall of the cylinder 221. The outer side wall of the cylinder 221 is provided with a receiving groove 223 for receiving the wire clip 222. The cylinder 221 is detachably connected to one end of the operation handle 21. In this way, the accommodation groove 223 can accommodate the wire clip 222 when the barrel 221 is positioned in the placement hole 14, avoiding interference of the wire clip 222 with the hole side wall of the placement hole 14, and the provision of the barrel 221 facilitates detachable attachment of one end of the operation handle 21. The crimping portion 22 is preferably a resilient arm having one end welded to the groove end wall of the receiving groove 223. The elastic arm forms an angle of 10 degrees or less with the groove side wall of the accommodation groove 223, so that the lead 1 can be sandwiched between the elastic arm and the groove side wall of the accommodation groove 223.

As shown in fig. 1 to 6, in order to improve the convenience of assembly and disassembly, one end of the operating handle 21 is inserted into the cylinder 221 and connected to the cylinder 221 through the first engaging structure 41. The barrel 221 is connected to the placing hole 14 by the second catching structure 42. Specifically, the first clamping structure 41 includes a first clamping groove 411 and a first protrusion 412 clamped and matched with the first clamping groove 411, the first clamping groove 411 is disposed on the inner side wall of the cylinder 221, and the first protrusion 412 is disposed at one end of the operating handle 21; the second clamping structure 42 includes a second clamping groove 421 and a second protrusion 422 clamped and matched with the second clamping groove 421, the second clamping groove 421 is disposed on the inner side wall of the placement hole 14, and the second protrusion 422 is disposed on the outer side wall of the barrel 221.

Of course, in the embodiment not shown in the drawings, one end of the operating handle is inserted into the cylinder and connected with the cylinder through the first clamping structure. The barrel and the placing hole can be connected through a second clamping structure.

As shown in fig. 1 to 6, the ligation device further comprises an adjusting member 51 movably disposed on the handle segment 11 and an adjusting wire 52 connecting the adjusting member 51 and the tip 13. The adjusting element 51 moves the adjusting thread 52 to switch the tip 13 between the puncturing position and the ligating position. The movement of the adjustment member 51 enables the adjustment of the number of turns of the adjustment wire 52 to switch the tip 13 between the piercing position and the ligating position.

As shown in fig. 1 to 8, the tip 13 includes a first connecting portion and a second connecting portion, which are oppositely disposed, the first connecting portion having a first fastening member 132 connected thereto, and the second connecting portion having a second fastening member 133 connected thereto. The adjusting wire 52 includes a first wire section 521 connecting between the first connecting portion and the adjusting member 51 and a second wire section 522 connecting between the second connecting portion and the adjusting member 51. The first fastener 132 can secure the first wire segment 521 within the first connection portion and the second fastener 133 can secure the second wire segment 522 within the second connection portion. Specifically, the first connecting portion is a first countersunk hole, the first fastening member 132 is a first countersunk screw, the second connecting portion is a second countersunk hole, and the second fastening member 133 is a second countersunk screw. Thus, the outer surface of the tip 13 is made smooth.

In this embodiment, the adjusting element 51 drives the first string 521 to move, so that the tip 13 is switched from the ligation position to the puncturing position, and then the first string 521 can be tensioned, so that the tip 13 can be kept at the puncturing position, and the position of the tip 13 is kept in the process of entering the operation space and bypassing the lower part of the vein trunk. The reverse direction adjusting piece 51 drives the second thread section 522 to move, so that the end head 13 is switched to the ligation position from the puncture position, the second thread section 522 can be tensioned, the end head 13 can be kept at the ligation position, the position of the end head 13 is fixed, the operating handle 21 and the thread clamping portion 22 in the placing hole 14 are convenient to install together, and the thread clamping portion 22 and the lead 1 can leave the placing hole 14 along with the operating handle 21.

As shown in fig. 1 to 8, in order to facilitate the movement of the first wire segment 521 and to avoid the interference with the vein trunk in the curved segment 12 when the first wire segment 521 is under tension, the first lead channel 124 and the second lead channel 125 are arranged at intervals in the curved segment 12. The first wire 521 passes through the first wire passage 124. In order to facilitate the second wire segment 522 to move and not interfere with human tissue outside the operating space when in a tensioned state, the second wire segment 522 passes through the second lead channel 125. The head 13 is provided with a wire avoiding groove 134 communicated with the placing hole 14. Thus, the lead 1 can be inserted into the second lead passage 125, pass through the bypass groove 134, and be clamped by the wire clamping portion 22 in the placement hole 14.

As shown in fig. 1 to 7, the adjusting member 51 includes a winding section 511 and a threaded section 512 connected to the winding section 511, and the operating handle 21 is provided with a threaded hole 211 for the threaded section 512 to pass through. The engagement of threaded section 512 with threaded bore 211 facilitates movement of adjustment member 51. The winding section 511 can wind a plurality of turns of the lead 1, so as to conveniently drive the adjusting wire 52 to move. The winding segment 511 includes a first stopping section, a cylindrical section and a second stopping section which are connected in sequence, and the first stopping section is connected with the thread segment 512. The multi-turn lead wire 1 is wound on the cylindrical section, and the first stopping section and the second stopping section can limit the lead wire 1 to move along the axis of the cylindrical section.

After the ligation operation is completed by using the varicose vein ligation apparatus of the embodiment, a catheter is used to pierce the position of the other end opposite to the ligation position of the vein trunk, a radio frequency catheter (not shown in the figure) is used to penetrate into the vein trunk from the opposite other end, the radio frequency catheter is used for heating, the heat of the radio frequency catheter is conducted to the inner wall of the vein trunk, so that the inner wall of the vein trunk is contracted, and the radio frequency catheter is withdrawn, so that the inner wall of the vein trunk can be in a closed state. When the venous trunk is caused to be in a closed state, blood in the venous trunk 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 of the trunk of the vein after completion of the ligation operation using the ligation apparatus for varicose veins of the present embodiment.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated 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 … …" can include both an orientation 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 the terms have no special meanings unless otherwise stated, 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 vein ligation instrument comprising:

the first operating rod (10) comprises a handle section (11) and a bending section (12) connected with the handle section (11), the first operating rod (10) further comprises a tip (13) which is connected with one end, far away from the handle section (11), of the bending section (12) in a swinging mode, the tip (13) is provided with a puncture position swinging towards the inside of the bending section (12) and a ligation position swinging towards the outside of the bending section (12), and a placing hole (14) is formed in one end, facing the bending section (12), of the tip (13);

and the second operating rod (20) comprises an operating handle (21) and a wire clamping part (22) detachably connected with the operating handle (21), and the wire clamping part (22) is detachably arranged in the placing hole (14).

2. The ligation instrument according to claim 1, wherein the end of the curved section (12) remote from the handle section (11) comprises a first stop surface (121) and a second stop surface (122) arranged at an angle to the first stop surface (121), the end of the tip (13) facing the curved section (12) having a mating surface (131), the mating surface (131) being in contact with the first stop surface (121) to place the tip (13) in the puncturing position, the mating surface (131) being in contact with the second stop surface (122) to place the tip (13) in the ligating position.

3. The ligation instrument according to claim 2, wherein a connecting piece (123) is arranged on the first limiting surface (121), an avoiding groove (135) for avoiding the connecting piece (123) is arranged on the end head (13), the end head (13) is hinged to the connecting piece (123) through 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, far away from the bending section (12), of the end head (13) is of a curved surface structure.

4. The ligation instrument according to claim 1 or 3, wherein the handle segment (11) is provided with a guiding hole (111) corresponding to the placement hole (14), the guiding hole (111) is coaxial with the placement hole (14) when the tip (13) is in the ligation position, and the second operating rod (20) is movably inserted through the guiding hole (111).

5. The ligation instrument according to claim 4, wherein the wire clamping part (22) comprises 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), and the cylinder (221) is detachably connected with one end of the operating handle (21).

6. The ligation instrument according to claim 5, wherein one end of the operating handle (21) is arranged in the barrel body (221) in a penetrating way and is connected with the barrel body (221) through a first clamping structure (41); and/or the barrel body (221) is connected with the placing hole (14) through a second clamping structure (42).

7. The ligation instrument according to claim 5, further comprising an adjusting member (51) movably arranged on the handle segment (11) and an adjusting wire (52) connecting the adjusting member (51) and the tip (13), wherein the adjusting member (51) drives the adjusting wire (52) to move so as to switch the tip (13) between the puncturing position and the ligating position.

8. The ligation instrument according to claim 7, wherein the tip (13) comprises a first connecting portion and a second connecting portion arranged oppositely, the first connecting portion having a first fastener (132) connected therein and the second connecting portion having a second fastener (133) connected therein, the adjustment wire (52) comprising a first line segment (521) connecting between the first connecting portion and the adjustment member (51) and a second line segment (522) connecting between the second connecting portion and the adjustment member (51).

9. The ligation instrument according to claim 8, wherein a first lead channel (124) and a second lead channel (125) are provided at intervals in the curved section (12), the first wire section (521) is passed through the first lead channel (124), and the second wire section (522) is passed through the second lead channel (125); and/or a wire avoiding groove (134) communicated with the placing hole (14) is arranged on the end head (13).

10. The ligation instrument according to claim 9, wherein the adjusting member (51) comprises a winding segment (511) and a threaded segment (512) connected to the winding segment (511), and the operating handle (21) is provided with a threaded hole (211) for the threaded segment (512) to pass through.

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