Combined artificial blood vessel sheath with lymph node power reconstruction function and guiding device

Abstract

The utility model discloses a combined type artificial blood vessel sheath with lymph node reconstruction power and a guiding device, the combined type artificial blood vessel sheath comprises an elastic sheet and a plurality of ribbons connected with the elastic sheet, the elastic sheet covers a blood vessel bundle, the ribbons sequentially surround and bind the blood vessel bundle, and the elastic sheet covers the blood vessel bundle. The low-elasticity combined artificial blood vessel sheath is arranged on the surface of the blood vessel bundle to form the combined artificial blood vessel sheath wrapping the blood vessel bundle, the guiding device comprises a tractor, the tractor is of an arc-shaped plate type structure, a guiding hook is arranged at the front end of the tractor, the guiding hook is matched with a hook hole in the binding belt, and an opening of the guiding hook faces backwards. According to the combined artificial blood vessel outer sheath, damaged or hardened blood vessel outer membranes which lose functions are replaced, the extrusion stimulation function on peripheral lymph nodes of blood vessels is reconstructed, the influence on blood vessel branches is reduced, the guide device facilitates implantation of the combined artificial blood vessel outer sheath by operators, and the combined artificial blood vessel outer sheath is simple in structure, convenient to operate and small in damage to human bodies.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a combined artificial blood vessel outer sheath and a guiding device with the power to reconstruct lymph nodes. Background Art

[0002] The adventitia is the outermost component structure of blood vessels, mainly including the external elastic lamina, nutrient blood vessels, nerve endings and surrounding loose connective tissue (including fibroblasts and tissue macrophages). Some parts have special receptors such as the carotid body. Sympathetic and parasympathetic nerve fibers that control blood vessel contraction enter the blood vessels from the adventitia, and the nutrient blood vessels also enter from the adventitia to provide nutrients for the adventitia layer. The adventitia is not only a supporting structure of the blood vessel wall, but can also play a role through complex interaction effects with other components of the blood vessel wall [1]. The adventitia plays an important role in blood vessel growth, function regulation, maintenance of blood vessel homeostasis, and blood vessel remodeling, calcification and fibrosis by secreting active factors, participating in cell phenotype transformation, proliferation, apoptosis, migration, intimal hyperplasia, and collagen synthesis and secretion. Especially for the adventitia that surrounds some large arteries and veins, it will rebound the outward propagating power generated by the pulsation of arterial blood vessels and the fluctuation of venous blood vessels, thereby forming a resultant force to squeeze the lymph nodes distributed around the blood vessels, which helps the lymph fluid in the lymph nodes to flow unidirectionally towards the heart. If the adventitia is damaged or sclerosed, the function of squeezing and stimulating the peripheral lymph nodes of the blood vessels is lost, thus having a certain impact on the circulation and replenishment of lymphocytes. Summary of the Utility Model

[0003] The purpose of the utility model is to research and provide a combined artificial blood vessel outer sheath and a guiding device that can reconstruct the power of lymph nodes, overcoming the deficiency that the adventitia is damaged or sclerosed, resulting in structural damage and loss of the function of squeezing and stimulating the peripheral lymph nodes of the blood vessels, and having the characteristics of simple structure, convenient operation and small damage to the human body.

[0004] The technical solution of the utility model is as follows:

[0005] A combined artificial blood vessel outer sheath with the power to reconstruct lymph nodes, the combined artificial blood vessel outer sheath includes shrapnel and multiple ligatures connected to the shrapnel. The shrapnel is a thin strip-like structure and covers the blood vessel bundle. Multiple ligatures successively surround and tie the blood vessel bundle. The two side edges of the shrapnel are respectively provided with linearly distributed and corresponding openings. The openings match the size of the ligatures and accommodate the ligatures to pass through. The tail of the ligature is provided with a positioning strip for positioning. The positioning strip is larger than the above-mentioned opening. The head of the ligature passes through the opening on one side and is fixed to the opening by the positioning strip at the tail of the ligature. The surface of the head of the ligature is provided with a reverse barb-shaped anti-retreat strip. The height of the anti-retreat strip matches the width of the opening on the other side of the shrapnel and passes through and locks in the opening. Multiple symmetrically distributed hook holes are provided on both side edges of the ligature. The shrapnel covers the surface of the blood vessel bundle with the outer peripheral membrane cut or peeled off and fits the surface of the blood vessel bundle. The ligature is used to surround and tie the blood vessel bundle to form a combined artificial blood vessel outer sheath that wraps the blood vessel bundle to replace the damaged or hardened blood vessel outer sheath that has lost its function. The hook holes on the ligature are used for the insertion and pulling of the tractor.

[0006] Preferably, both ends of the shrapnel are provided with symmetric connection holes, and the connection holes are used for the connection between adjacent shrapnels, facilitating the extension of the combined artificial blood vessel outer sheath.

[0007] Preferably, the head of the ligature is conical, facilitating the positioning and insertion of the ligature into the opening.

[0008] Preferably, the materials of the shrapnel and the ligature are expanded polytetrafluoroethylene or polyester or high-grade silica gel, and the material of the artificial blood vessel is PICC.

[0009] Preferably, the width of the shrapnel is 0.5 - 2.0 cm, and the thickness of the shrapnel is 0.1 - 0.3 cm.

[0010] A guiding device for a combined artificial blood vessel outer sheath with the power to reconstruct lymph nodes, the guiding device includes a tractor. The tractor is an arc-shaped plate structure. The front end of the tractor is provided with two guiding hooks longitudinally distributed and perpendicular to the plane of the arc-shaped plate of the tractor. The guiding hooks match the hook holes on the ligature and their openings face backward. The tail of the tractor is provided with a handle. The tractor is designed as an arc-shaped plate structure, facilitating passing through the narrow space under the blood vessel bundle. The guiding hooks at its front end are used to hook the hook holes on the ligature, and the handle at its tail facilitates the operator to hold and operate.

[0011] Preferably, the material of the tractor is titanium alloy or stainless steel.

[0012] The usage method of a combined artificial blood vessel outer sheath with the power to reconstruct lymph nodes is as follows:

[0013] 1) Pass the heads of multiple cable ties through the openings on one side of the elastic piece in sequence, and make the positioning strips at the tails of the cable ties snap into the openings to form a strip-shaped elastic piece with multiple cable ties.

[0014] 2) Cover and attach the strip-shaped elastic piece along the direction of the vascular bundle onto the surface of the vascular bundle that needs to reconstruct the lymph node dynamics.

[0015] 3) Pass the front end of the tractor through the lower part of the above-mentioned vascular bundle to the other side of the vascular bundle, corresponding to the corresponding cable ties.

[0016] 4) Align the guide hook at the front end of the tractor with the hook hole on the corresponding cable tie and insert it. Pull the tractor to make the head of the cable tie pass through and be drawn out from under the vascular bundle.

[0017] 5) Disconnect the guide hook of the tractor, insert the head of the cable tie into the corresponding opening on the other side edge of the elastic piece and tighten it. Cooperate with the elastic piece to tie the vascular bundle. At this time, the anti-retreat card strip on the cable tie is compressed and reduced in size and passes through the opening. When it passes through the opening, it expands elastically to prevent the cable tie from retreating. Adjusting the insertion depth of the head of the cable tie can adjust the tightening degree of the cable tie on the vascular bundle.

[0018] 6) And so on, repeat the pulling and tying of the remaining cable ties, cut off the redundant heads of the cable ties, and complete the installation of the combined artificial blood vessel outer sheath.

[0019] 7) If a longer combined artificial blood vessel outer sheath is needed, other elastic pieces can be added at both ends of the existing elastic piece respectively. Carry out covering and bundling according to the above operation steps, and fixedly connect the adjacent elastic pieces through the connection holes at the ends of the elastic pieces to form a combined artificial blood vessel outer sheath with the required length.

[0020] 8) At this time, the combined artificial blood vessel outer sheath covers and ties the periphery of the vascular bundle, can simulate the structure of the blood vessel outer membrane, so that the outwardly propagating power generated by the pulsation of the arterial blood vessel and the fluctuation of the venous blood vessel in the vascular bundle rebounds back through the low-elastic combined artificial blood vessel outer sheath. Thus, a resultant force is generated with the above power and squeezes the lymph nodes distributed around the blood vessel, thereby re-establishing the dynamic squeezing and stimulating function of the vascular bundle on the peripheral lymph nodes, which helps the lymph fluid in the lymph nodes to flow unidirectionally towards the proximal end.

[0021] The beneficial effects of the utility model are as follows: By setting a low-elastic combined artificial blood vessel outer sheath on the surface of the vascular bundle, replacing the damaged or hardened blood vessel outer membrane that has lost its function, reconstructing the squeezing and stimulating function on the peripheral lymph nodes of the blood vessel, reducing the influence on the blood vessel branches, and the guiding device is convenient for operators to implant the combined artificial blood vessel outer sheath, with simple structure, convenient operation and little damage to the human body. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the combined artificial blood vessel outer sheath of the utility model.

[0023] Figure 2 is Figure 1 the explosion schematic diagram of the structure.

[0024] Figure 3 is Figure 1 the schematic diagram of the cable tie structure in

[0025] Figure 4 the schematic diagram of the tractor structure of the present utility model.

[0026] In the figure, 1. elastic piece, 11. opening, 12. connecting hole, 13. transverse chute, 2. cable tie, 21. positioning strip, 22. anti-retreat latch strip, 23. hook hole, 3. blood vessel bundle, 4. tractor, 41. guide hook, 42. handle. Specific embodiments

[0027] The technical solution of the present utility model will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0028] Embodiment: The combined artificial blood vessel sheath with the power to reconstruct lymph nodes in this embodiment, as Figure 1 and Figure 2 shown, includes an elastic piece 1 and multiple cable ties 2 connected to the elastic piece. The elastic piece and the cable ties are made of expanded polytetrafluoroethylene. The elastic piece is a thin strip structure and covers the blood vessel bundle. The length of the elastic piece is 100 mm, the width is 10 mm, and the thickness is 2 mm. The length of the cable tie is 50 mm, the width is 8 mm, and the thickness is 1 mm. Linear and corresponding openings 11 are respectively designed on both side edges of the above-mentioned elastic piece, and symmetrical connecting holes 12 are designed at both ends of the elastic piece to facilitate the extension connection of multiple elastic pieces in the length direction. The above-mentioned openings match the size of the cable tie and accommodate the penetration of the cable tie. As Figure 3 shown, a positioning strip 21 for positioning is designed at the tail of the cable tie. The size of the positioning strip is larger than the above-mentioned opening. The head of the cable tie is conical. The head of the cable tie penetrates one side of the opening and is fixed to the opening through the positioning strip at the tail of the cable tie. Anti-retreat latch strips 22 in the shape of barbs are designed on both the front and back surfaces of the head of the cable tie. The height of the anti-retreat latch strip matches the width of the opening on the other side of the elastic piece and penetrates and locks in the opening. Multiple symmetrically distributed hook holes 23 are designed on both side edges of the cable tie, and multiple cable ties successively surround and tie the blood vessel bundle.

[0029] The guiding device of the combined artificial blood vessel sheath with the power to reconstruct lymph nodes includes a tractor 4, as Figure 4 shown. The tractor is an arc-shaped plate structure. Two parallel guide hooks 41 longitudinally distributed and perpendicular to the plane of the arc-shaped plate of the tractor are designed at the front end of the tractor. The guide hooks match the hook holes on the cable tie and their openings face backward. A handle 42 is designed at the tail of the tractor.

[0030] The operation steps of implanting the combined artificial blood vessel sheath are as follows:

[0031] 1) Pass the heads of multiple tie straps through the openings on one side of the elastic piece in sequence, and make the positioning strips at the tails of the tie straps snap into the openings to form a strip-shaped elastic piece with multiple tie straps;

[0032] 2) Cover and attach the strip-shaped elastic piece along the direction of the blood vessel bundle onto the surface of the blood vessel bundle that needs to reconstruct the lymph node dynamics;

[0033] 3) Pass the front end of the tractor from below the above-mentioned blood vessel bundle to the other side of the blood vessel bundle, corresponding to the corresponding tie straps;

[0034] 4) Align the guide hook at the front end of the tractor with and insert it into the hook hole on the corresponding tie strap, and pull the tractor to make the head of the tie strap pass through and be drawn out from below the blood vessel bundle;

[0035] 5) Disconnect the guide hook of the tractor, insert the head of the tie strap into the corresponding opening on the other side edge of the elastic piece and tighten it, cooperate with the elastic piece to tie the blood vessel bundle. At this time, the anti-retreat card strip on the tie strap is compressed and reduced in size and passes through the opening. When passing through the opening, it expands elastically to prevent the tie strap from retreating. Adjusting the insertion depth of the head of the tie strap can adjust the tightening degree of the tie strap on the blood vessel bundle;

[0036] 6) And so on, repeat the pulling and tying of the remaining tie straps, cut off the excess heads of the tie straps, and complete the installation of the combined artificial blood vessel sheath;

[0037] 7) If a longer combined artificial blood vessel sheath is needed, the remaining elastic pieces can be added at both ends of the existing elastic piece respectively, cover and tie it according to the above operation steps, and fixedly connect the adjacent elastic pieces through the connection holes at the ends of the elastic pieces to form a combined artificial blood vessel sheath with the required length;

[0038] 8) At this time, the combined artificial blood vessel sheath can simulate the structure of the blood vessel peripheral membrane, and bounce back the outwardly propagating power generated by the pulsation of the arterial blood vessel and the fluctuation of the venous blood vessel in the blood vessel bundle through the low-elastic combined artificial blood vessel sheath, thereby generating a resultant force to squeeze the lymph nodes distributed around the blood vessels, making the lymph fluid in the lymph nodes flow unidirectionally towards the proximal end, thus re-establishing the dynamic squeezing and stimulating function of the blood vessel bundle pulsation on the peripheral lymph nodes.

[0039] In the description of the present utility model, the technical terms "upper", "lower", "front", "rear", "left", "right", "longitudinal", "transverse", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing and understanding the technical solution of the present utility model. The above description does not limit the present utility model, and the present utility model is not limited to the examples or embodiments described above. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the substantial scope of the present utility model shall be regarded as within the protection scope of the present utility model.

Claims

1. A combined artificial vascular sheath with lymph node reconstruction function, characterized in that: The combined artificial blood vessel outer sheath comprises a spring sheet (1) and a plurality of cable ties (2) connected to the spring sheet, wherein the spring sheet is a thin belt-like structure and covers the blood vessel bundle, and the plurality of cable ties sequentially surround and tie the blood vessel bundle (3), and the edges on both sides of the spring sheet are respectively provided with openings (11) distributed in a straight line and corresponding to each other, and the openings match the size of the cable ties and accommodate the cable ties to pass through, and symmetrical connecting holes (12) are provided at both ends of the spring sheet, and a positioning strip (21) for clamping is provided at the tail of the cable tie, and the positioning strip is larger than the opening, and the head of the cable tie passes through the opening on one side and is fixed to the opening through the positioning strip at the tail of the cable tie, and a barbed stopper strip (22) is provided on the surface of the head of the cable tie, and the height of the stopper strip matches the width of the opening on the other side of the spring sheet and passes through and is locked in the opening, and a plurality of symmetrically distributed hook holes (23) are provided at the edges on both sides of the cable tie.

2. The combined artificial vascular sheath with lymph node reconstruction function according to claim 1, characterized in that: The head of the cable tie (2) is in a cone shape.

3. The combined artificial vascular sheath with lymph node reconstruction function according to claim 1 or 2, characterized in that: The material of the spring piece (1) and the cable tie (2) is expanded polytetrafluoroethylene or polyester or high-grade silicone.

4. The combined artificial vascular sheath with lymph node reconstruction function according to claim 3, characterized in that: The width of the spring piece (1) is 0.5 to 2.0 cm, and the thickness of the spring piece is 0.1 to 0.3 cm.

5. A guiding device for a combined artificial blood vessel outer sheath with the function of reconstructing lymph node dynamics according to claim 1, characterized in that: The guiding device comprises a tractor (4) which is in an arc-shaped plate structure. The front end of the tractor is provided with two guide hooks (41) which are longitudinally distributed and perpendicular to the plane of the arc-shaped plate of the tractor. The guide hooks match the hook holes on the cable tie and their openings face backwards. The rear end of the tractor is provided with a handle (42).

6. The guiding device according to claim 5, characterized in that: The material of the tractor (4) is titanium alloy or stainless steel.

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