Great saphenous vein detacher

Abstract

The utility model relates to the technical field of medical instruments, in particular to a great saphenous vein detacher which is used for solving the problem that resistance is large when a great saphenous vein is stripped through an existing device. The great saphenous vein detacher comprises a dissociation wire, a mounting column is connected to the end of the extraction wire, a first cone and a second cone are arranged on the mounting column, the first cone slides on the mounting column, and the second cone is fixed to the mounting column; the conical head of the first conical body is connected with an annular blade, and the annular blade reversibly deforms; after the extraction wire penetrates through the great saphenous vein, the extraction wire is pulled, the great saphenous vein needing to be stripped is pulled out, when the installation column moves to a branch blood vessel of the great saphenous vein, the branch blood vessel blocks the installation column, at the moment, the first vertebral body can be close to the second vertebral body, and the cutting edge of the annular blade faces the branch blood vessel of the great saphenous vein; and when the extraction wire is continuously pulled, the annular blade can cut off the connection between the branch blood vessel and the great saphenous vein, so that the pulling force for extracting the extraction wire when the great saphenous vein is stripped is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a great saphenous vein stripper. Background Art

[0002] In the medical field, great saphenous vein stripping is a common surgical procedure, mainly used to treat diseases such as varicose veins. In traditional surgical methods, doctors usually need to cut the skin and directly observe and operate the blood vessels to complete the stripping process. However, this method is not only traumatic, has a long recovery time, but is also prone to complications.

[0003] In order to improve this situation, the medical community has been seeking a more minimally invasive, safe and effective method for great saphenous vein stripping. Among them, the use of a great saphenous vein stripper is a more ideal solution. This type of stripper usually includes a slender extraction wire, one end of which is connected to a specially designed mounting column. The mounting column is generally provided with a first vertebra that can slide relative to each other and a second vertebra that is fixed. This design enables the stripper to extract the great saphenous vein from the body by pulling the extraction wire without cutting the skin.

[0004] However, existing great saphenous vein strippers often have difficulties in handling branch vessels. When the mounting post moves to the branch vessels of the great saphenous vein, the branch vessels will block the mounting post, making the extraction process difficult. The existing treatment method is usually to increase the extraction force to directly tear off the branch vessels, which will cause greater resistance during the stripping of the great saphenous vein. Utility Model Content

[0005] The utility model provides a great saphenous vein stripping device to solve the problem of large resistance when stripping the great saphenous vein in the existing device.

[0006] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0007] A great saphenous vein stripper comprises a detachment wire; the end of the detachment wire is connected to a mounting column, a first vertebra and a second vertebra are arranged on the mounting column, the first vertebra slides on the mounting column, and the second vertebra is fixed to the mounting column; an annular blade is connected to the cone head of the first vertebra, and the annular blade is reversibly deformable; when the first vertebra does not approach the second vertebra, one of the surfaces of the annular blade is attached to the cone surface of the second vertebra; when the first vertebra approaches the second vertebra, the annular blade is squeezed and deformed so that the other surface of the annular blade is attached to the cone surface of the first vertebra.

[0008] Furthermore, an annular groove is formed at the cone head of the second vertebral body, and the cone head of the first vertebral body can be moved into the annular groove to squeeze the annular blade to deform.

[0009] Furthermore, a convex ring is arranged on the conical surface of the first vertebral body.

[0010] Furthermore, a sliding seat is connected to the inner wall of the first vertebral body, and a sliding groove cooperating with the sliding seat is opened on the side wall of the mounting column; a spring is placed in the sliding groove, and two ends of the spring are respectively connected to the sliding seat and the mounting column.

[0011] Furthermore, a through hole is provided in the middle of the mounting column, a wire threading hole is provided on the side wall of the through hole, and the end of the extraction wire passes through the through hole and the wire threading hole in sequence.

[0012] Furthermore, an externally threaded tube is connected to the end face of the mounting column, the externally threaded tube is communicated with the through hole of the mounting column, and the threading hole is arranged between the externally threaded tube and the mounting column; a buckle cap is threadedly connected to the externally threaded tube, and when the buckle cap is tightened, the end of the extracted wire passing through the threading hole is fixed between the buckle cap and the mounting column.

[0013] Furthermore, a piston cylinder is provided in the slide groove of the mounting column, and a piston rod is slidably connected in the piston cylinder; the piston cylinder and the piston rod are respectively connected to the mounting column and the slide seat; an extraction tube and a discharge tube are connected to the piston cylinder, a cavity for storing bio-glue is provided in the mounting column, and both ends of the extraction tube are respectively connected to the cavity and the piston cylinder, a plurality of discharge holes are provided on the side wall of the second vertebral body, and both ends of the discharge tube are respectively connected to the piston cylinder and the plurality of discharge holes.

[0014] Furthermore, it also includes a handle, and the extraction wire is connected to the handle.

[0015] The beneficial effects of the utility model are analyzed as follows:

[0016] A great saphenous vein stripper comprises a detachment wire; the end of the detachment wire is connected to a mounting column, a first vertebra and a second vertebra are arranged on the mounting column, the first vertebra slides on the mounting column, and the second vertebra is fixed to the mounting column; an annular blade is connected to the cone head of the first vertebra, and the annular blade is reversibly deformable; when the first vertebra does not approach the second vertebra, one surface of the annular blade adheres to the cone surface of the second vertebra; when the first vertebra approaches the second vertebra, the annular blade is squeezed and deformed so that the other surface of the annular blade adheres to the cone surface of the first vertebra.

[0017] The mounting post is connected and fixed to the protruding part of the extraction wire, and the extraction wire is pulled at this time. When the extraction wire is pulled, the great saphenous vein to be stripped can be pulled out. During the pulling process, when the installation post moves to the branch blood vessel of the great saphenous vein, the branch blood vessel blocks the installation post, and at the same time, the first vertebra also contacts the branch blood vessel, so that the blocking force of the branch blood vessel can be applied to the first vertebra. At this time, continuing to pull the extraction wire will cause the first vertebra to slide relative to the installation post, so that the first vertebra can approach the second vertebra at this time. At this time, the second vertebra squeezes the annular blade of the first vertebra, so that the annular blade changes from being attached to the conical surface of the second vertebra to being attached to the conical surface of the first vertebra. At this time, the blade of the annular blade faces the branch blood vessel of the great saphenous vein, and then when the extraction wire is continued to be pulled at this time, the annular blade can cut off the connection between the branch blood vessel and the great saphenous vein, thereby reducing the pulling force of pulling the extraction wire when stripping the great saphenous vein. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the installation column of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the annular blade of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second vertebral body of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the convex ring of the utility model;

[0024] Figure 6 For this utility model Figure 5 Schematic diagram of the structure of part A.

[0025] icon:

[0026] 100, handle; 110, extraction wire; 200, mounting column; 201, external threaded tube; 202, threading hole; 210, buckle cap; 300, first vertebra; 310, annular blade; 320, second vertebra; 330, convex ring; 400, sliding seat; 410, piston rod; 420, piston cylinder; 430, spring; 440, discharge pipe; 441, discharge hole; 450, extraction pipe; 451, cavity. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example

[0031] like Figure 1-Figure 6As shown, a great saphenous vein stripper comprises a detachment wire 110; the end of the detachment wire 110 is connected to a mounting column 200, a first vertebra 300 and a second vertebra 320 are arranged on the mounting column 200, the first vertebra 300 slides on the mounting column 200, and the second vertebra 320 is fixed to the mounting column 200; an annular blade 310 is connected to the cone head of the first vertebra 300, and the annular blade 310 is reversibly deformable; when the first vertebra 300 does not approach the second vertebra 320, one surface of the annular blade 310 is attached to the cone surface of the second vertebra 320; when the first vertebra 300 approaches the second vertebra 320, the annular blade 310 is squeezed and deformed so that the other surface of the annular blade 310 is attached to the cone surface of the first vertebra 300.

[0032] The working mechanism of the great saphenous vein stripper provided in this embodiment is as follows:

[0033] When in use, first cut open the human skin and cut off the two ends of the great saphenous vein that needs to be stripped, pass the extraction wire 110 through the great saphenous vein until it protrudes, connect and fix the mounting post 200 at the protruding part of the extraction wire 110, then pull the extraction wire 110, and the diameter of the mounting post 200 is larger than the great saphenous vein that needs to be stripped, so that the great saphenous vein that needs to be stripped can be pulled out when the extraction wire 110 is pulled. During the pulling process, when the mounting post 200 moves to the branch blood vessels of the great saphenous vein, the branch blood vessels block the mounting post 200, and at the same time, the first vertebral body 300 also contacts the branch blood vessels, so that the blocking force of the branch blood vessels can be applied to the first vertebral body 300, and continuing to pull the extraction wire 110 will cause the first vertebral body 300 to slide relative to the mounting post 200, so that the first vertebral body 300 can approach the second vertebral body 320 at this time. 320 squeezes the annular blade 310 of the first vertebra 300, so that the annular blade 310 changes from being attached to the conical surface of the second vertebra 320 to being attached to the conical surface of the first vertebra 300. At this time, the blade of the annular blade 310 faces the branch blood vessel of the great saphenous vein, and then when the extraction wire 110 continues to be pulled at this time, the annular blade 310 can cut off the connection between the branch blood vessel and the great saphenous vein, thereby reducing the pulling force of the extraction wire 110 when the great saphenous vein is stripped. Since the annular blade 310 is reversibly deformable, the resistance encountered by the first vertebra 300 is reduced when the branch blood vessel is cut off. At this time, the deformation of the annular blade 310 is restored, so that the blade direction of the annular blade 310 faces the opposite direction of the extraction wire 110, so that the blade of the annular blade 310 will not excessively scratch the human body and will not cause greater resistance to the extraction of the extraction wire 110.

[0034] Regarding how the annular blade 310 is deformed by extrusion, specifically:

[0035] An annular groove is formed at the cone head of the second vertebral body 320 , and the cone head of the first vertebral body 300 can move into the annular groove to squeeze the annular blade 310 to deform.

[0036] The annular blade 310 is conical when not subjected to force, and its cone head is connected to the cone head of the first vertebra 300. When the first vertebra 300 approaches the second vertebra 320, the cone head of the first vertebra 300 can enter the annular groove opened at the cone head of the second vertebra 320. During this process, the second vertebra 320 squeezes and pushes the annular blade 310 close to the inner wall part of its cone head, thereby causing the annular blade 310 to flip so that the blade direction of the annular blade 310 changes, thereby enabling the annular blade 310 to cut off the branch blood vessels.

[0037] Among the optional methods of this embodiment, the more preferred ones are:

[0038] A convex ring 330 is disposed on the conical surface of the first vertebral body 300 .

[0039] In order to prevent the annular blade 310 from being completely attached to the conical surface of the first vertebra 300 after being flipped, a convex ring 330 is further provided on the conical surface of the first vertebra 300. After the side of the flipped annular blade 310 contacts the convex ring 330, it no longer approaches the conical surface of the first vertebra 300. At this time, there is a gap between the blade of the annular blade 310 and the conical surface of the first vertebra 300, so that the annular blade 310 at this time can better cut off the branch blood vessels.

[0040] Among the optional methods of this embodiment, the more preferred ones are:

[0041] A slide seat 400 is connected to the inner wall of the first vertebral body 300 , and a slide groove cooperating with the slide seat 400 is provided on the side wall of the mounting column 200 ; a spring 430 is placed in the slide groove, and two ends of the spring 430 are respectively connected to the slide seat 400 and the mounting column 200 .

[0042] The cooperation between the slide seat 400 and the slide groove ensures that the first vertebral body 300 will not be separated from the mounting column 200. The setting of the spring 430 plays an auxiliary role in the reset of the first vertebral body 300, thereby ensuring that the annular blade 310 can stably recover from deformation.

[0043] Among the optional methods of this embodiment, the more preferred ones are:

[0044] A through hole is provided in the middle of the mounting post 200, and a threading hole 202 is provided on the side wall of the through hole. The end of the extraction wire 110 passes through the through hole and the threading hole 202 in sequence; an external threaded barrel 201 is connected to the end surface of the mounting post 200, and the external threaded barrel 201 is connected to the through hole of the mounting post 200, and the threading hole 202 is arranged between the external threaded barrel 201 and the mounting post 200; a buckle cap 210 is threadedly connected to the external threaded barrel 201, and when the buckle cap 210 is tightened, the end of the extraction wire 110 passing through the threading hole 202 is fixed between the buckle cap 210 and the mounting post 200.

[0045] The extraction wire 110 passes through the through hole in the middle of the mounting column 200 and the wire threading hole 202 on the side wall of the through hole and is connected to the mounting column 200. Then, the buckle cap 210 is screwed onto the external threaded tube 201, so that the end of the extraction wire 110 is squeezed by the buckle cap 210 and the mounting column 200 and fixed on the mounting column 200.

[0046] How to reduce bleeding after branch vessel disconnection:

[0047] A piston cylinder 420 is arranged in the slide groove of the mounting column 200, and a piston rod 410 is slidably connected in the piston cylinder 420; the piston cylinder 420 and the piston rod 410 are respectively connected to the mounting column 200 and the sliding seat 400; an extraction tube 450 and a discharge tube 440 are connected to the piston cylinder 420, a cavity 451 for storing bio-glue is opened in the mounting column 200, and both ends of the extraction tube 450 are respectively connected to the cavity 451 and the piston cylinder 420, a plurality of discharge holes 441 are opened on the side wall of the second vertebral body 320, and both ends of the discharge tube 440 are respectively connected to the piston cylinder 420 and the plurality of discharge holes 441.

[0048] When the first vertebral body 300 approaches the second vertebral body 320 so that the annular blade 310 flips, the piston rod 410 connected to the slide seat 400 on the first vertebral body 300 slides into the piston cylinder 420 at the same time. At this time, the biological glue in the piston cylinder 420 flows out to the side of the second vertebral body 320 through the discharge pipe 440 and the discharge hole 441 in turn. When the branch blood vessel is cut off, as the extraction wire 110 is extracted, the second vertebral body 320 can be moved to the cut branch blood vessel, so that the biological glue on the side wall of the second vertebral body 320 can be applied to the disconnected part of the branch blood vessel, thereby bonding the disconnected part of the branch blood vessel and reducing the amount of bleeding from the branch blood vessel.

[0049] Among the optional methods of this embodiment, the more preferred ones are:

[0050] The invention also includes a handle 100 , to which a withdrawal wire 110 is connected.

[0051] The handle 100 enables the user to hold the device in hand and pull the extraction wire 110 conveniently.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A great saphenous vein stripper, comprising a detachment wire (110), characterized in that ； The end of the extraction wire (110) is connected to a mounting column (200), and a first vertebral body (300) and a second vertebral body (320) are arranged on the mounting column (200), the first vertebral body (300) slides on the mounting column (200), and the second vertebral body (320) is fixed to the mounting column (200); An annular blade (310) is connected to the cone head of the first vertebral body (300), and the annular blade (310) is reversibly deformable; When the first vertebral body (300) does not approach the second vertebral body (320), one surface of the annular blade (310) is attached to the conical surface of the second vertebral body (320); When the first vertebral body (300) approaches the second vertebral body (320), the annular blade (310) is squeezed and deformed so that the other surface of the annular blade (310) adheres to the conical surface of the first vertebral body (300).

2. The great saphenous vein stripper according to claim 1, It is characterized by: An annular groove is provided at the cone head of the second vertebral body (320), and the cone head of the first vertebral body (300) can move into the annular groove to squeeze the annular blade (310) to deform.

3. The great saphenous vein stripper according to claim 2, characterized in that ； A convex ring (330) is provided on the conical surface of the first vertebral body (300).

4. The great saphenous vein stripper according to claim 1, characterized in that ； A sliding seat (400) is connected to the inner wall of the first vertebral body (300), and a sliding groove cooperating with the sliding seat (400) is provided on the side wall of the mounting column (200); A spring (430) is placed in the slide groove, and two ends of the spring (430) are respectively connected to the slide seat (400) and the mounting column (200).

5. The great saphenous vein stripper according to claim 4, It is characterized by: A through hole is provided in the middle of the installation column (200), a wire threading hole (202) is provided on the side wall of the through hole, and the end of the extraction wire (110) passes through the through hole and the wire threading hole (202) in sequence.

6. The great saphenous vein stripper according to claim 5, It is characterized by: An externally threaded barrel (201) is connected to the end surface of the mounting column (200), the externally threaded barrel (201) is in communication with a through hole of the mounting column (200), and the threading hole (202) is provided between the externally threaded barrel (201) and the mounting column (200); A buckle cap (210) is threadedly connected to the external threaded cylinder (201). When the buckle cap (210) is tightened, the end of the extraction wire (110) passing through the wire threading hole (202) is fixed between the buckle cap (210) and the mounting column (200).

7. The great saphenous vein stripper according to claim 6, It is characterized by: A piston cylinder (420) is arranged in the slide groove of the installation column (200), and a piston rod (410) is slidably connected in the piston cylinder (420); The piston cylinder (420) and the piston rod (410) are respectively connected to the mounting column (200) and the sliding seat (400); The piston cylinder (420) is connected to an extraction tube (450) and a discharge tube (440); a cavity (451) for storing bio-glue is provided in the mounting column (200); two ends of the extraction tube (450) are respectively connected to the cavity (451) and the piston cylinder (420); a plurality of discharge holes (441) are provided on the side wall of the second vertebral body (320); and two ends of the discharge tube (440) are respectively connected to the piston cylinder (420) and the plurality of discharge holes (441).

8. The great saphenous vein stripper according to claim 1, characterized in that ； It also includes a handle (100), and the extraction wire (110) is connected to the handle (100).

Images