Combined artificial vascular sheath capable of reconstructing lymph node motive force, guiding device, and use method

Abstract

Disclosed are a combined artificial vascular sheath capable of reconstructing lymph node motive force, a guiding device, and a use method. The combined artificial vascular sheath comprises an elastic sheet and a plurality of tying bands connected to the elastic sheet, wherein the elastic sheet covers a vascular bundle, and the plurality of tying bands sequentially surround and bundle the vascular bundle to form a combined artificial vascular sheath wrapping the vascular bundle. The guiding device comprises a retractor, wherein the retractor is of an arc-shaped plate structure, the front end of the retractor is provided with a guide hook, and the guide hook matches a hook hole on the tying band and the opening thereof faces backwards. According to the present invention, the combined artificial vascular sheath with low elasticity is arranged on the surface of the vascular bundle to replace the damaged or hardened vascular adventitia which has lost its function, such that the function of squeezing and stimulating the peripheral lymph nodes of the blood vessel is reconstructed, and the influence on blood vessel branches is also reduced. The guiding device enables operators to conveniently implant the combined artificial vascular sheath, and has the advantages of simple structure, convenient operation and little damage to human bodies.

Description

Combined artificial vascular adventitial sheath, guiding device with lymph node power reconstruction and use method TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a combined artificial vascular adventitial sheath, guiding device with lymph node power reconstruction and use method. BACKGROUND

[0002] The adventitia is the outermost layer of the blood vessel, mainly including the external elastic layer, nutrient vessels, nerve endings and surrounding loose connective tissue (including fibroblasts and tissue macrophages), and some parts have special receptors such as carotid body. Sympathetic and parasympathetic nerve fibers that control blood vessel contraction enter the blood vessel from the adventitia, and nutrient vessels also enter the adventitia to provide nutrients for the adventitia. The adventitia is not just a supporting structure of the blood vessel wall, but can play a role through complex interactions with other components of the blood vessel wall. The adventitia plays an important role in blood vessel growth, function regulation, maintenance of vascular homeostasis, and vascular remodeling, calcification and fibrosis by secreting active factors, participating in cell phenotype transformation, proliferation, apoptosis, migration, intimal hyperplasia and collagen synthesis and secretion. In particular, for some adventitia surrounding large arteries and veins, it will bounce the outward transmission 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, helping the lymphatic fluid in the lymph nodes to flow unidirectionally to the proximal end. If the adventitia is damaged or hardened, it will lose the squeezing and stimulating function of the peripheral lymph nodes of the blood vessels, thereby affecting the circulation and replenishment of lymphocytes. SUMMARY

[0003] The purpose of the present application is to study and provide a combined artificial vascular adventitial sheath, guiding device with lymph node power reconstruction and use method, which overcomes the structural damage caused by the damage or hardening of the adventitia, and loses the squeezing and stimulating function of the peripheral lymph nodes of the blood vessels, has the characteristics of simple structure, convenient operation and small damage to the human body.

[0004] The technical scheme of the present application is as follows:

[0005] The application discloses a combined artificial blood vessel outer sheath with lymph node reconstruction power, which comprises a spring sheet and a plurality of lacing tapes connected with the spring sheet.

[0006] Preferably, the spring sheet is provided with symmetrical connecting holes at two ends, which are used for connecting adjacent spring sheets, so as to facilitate extension of the combined artificial blood vessel outer sheath.

[0007] Preferably, the head of the lacing tape is in a conical shape, so as to facilitate positioning and insertion of the lacing tape into the hole.

[0008] Preferably, the spring sheet and the lacing tape are made of expanded polytetrafluoroethylene, polyester or high-grade silica gel, and the artificial blood vessel is made of PICC.

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

[0010] The application further discloses a guiding device of the combined artificial blood vessel outer sheath with lymph node reconstruction power, which comprises a puller.

[0011] Preferably, the puller is made of titanium alloy or stainless steel.

[0012] The application further discloses a use method of the combined artificial blood vessel outer sheath with lymph node reconstruction power.

[0013] The head of the plurality of ties is sequentially and respectively threaded through one side opening of the shell, and the positioning strip of the tail of the tie is clamped in the opening, forming a shell with a plurality of ties;

[0014] The shell is covered and adhered to the surface of the vascular bundle in the direction of the vascular bundle, and the lymph node power is reconstructed;

[0015] The front end of the traction device is threaded from below the vascular bundle to the other side of the vascular bundle, corresponding to the corresponding tie;

[0016] The guide hook of the front end of the traction device is aligned and inserted into the hook hole on the corresponding tie, and the tie is pulled out from below the vascular bundle.

[0017] The guide hook of the traction device is disengaged, the tie head is inserted into the corresponding opening on the other side edge of the shell, and the tie is tightened to bundle the vascular bundle with the shell. At this time, the anti-back-off clamping strip on the tie is compressed and reduced in size and passes through the opening. When passing through the opening, it expands elastically to prevent the tie from retreating. The insertion depth of the tie head can adjust the tightness of the tie on the vascular bundle.

[0018] In this way, the remaining ties are repeatedly pulled and bundled, and the excess tie heads are cut off to complete the installation of the combined artificial vascular outer sheath.

[0019] If a longer combined artificial vascular outer sheath is required, additional shells can be added to the ends of the existing shells. Cover and bundle according to the above operation steps, and fix adjacent shells through the connecting holes at the ends of the shells to form a combined artificial vascular outer sheath of the required length.

[0020] At this time, the combined artificial vascular outer sheath covers and bundles the peripheral vascular bundle, and can simulate the structure of the peripheral vascular membrane. The outwardly propagating power generated by the pulsation of the arterial vessels and the venous vessels in the vascular bundle is bounced back by the low-elastic combined artificial vascular outer sheath. Thus, the above-mentioned power and the power generated by the above-mentioned power are combined to squeeze the lymph nodes distributed around the blood vessels, thereby re-establishing the power of the vascular bundle to the peripheral lymph nodes. The function of extrusion and stimulation, which helps the lymphatic fluid in the lymph nodes to flow unidirectionally to the proximal end.

[0021] The beneficial effects of the present application are: by setting a low-elastic combined artificial vascular outer sheath on the surface of the vascular bundle, replacing the damaged or hardened vascular adventitia that has lost its function, the extrusion and stimulation function of the peripheral lymph nodes of the blood vessels is re-established. Also reduces the impact on the vascular branches. The guide device facilitates the implantation of the combined artificial vascular outer sheath by the operator, and has the advantages of simple structure, easy operation and small damage to the human body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the structure of the combined artificial vascular outer sheath of the present application.

[0023] Figure 2 is an exploded schematic view of the structure of Figure 1.

[0024] Figure 3 is a schematic view of the structure of the tie in Figure 1.

[0025] Figure 4 is a schematic view of the structure of the retractor of the present application.

[0026] Figure 1. sheet, 11. hole, 12. connecting hole, 13. transverse sliding slot, 2. tie, 21. positioning bar, 22. anti-back-off clamping bar, 23. hook hole, 3. vascular bundle, 4. retractor, 41. guide hook, 42. handle. DETAILED DESCRIPTION

[0027] The technical solutions of the present application are further described below by way of examples and in conjunction with the accompanying drawings.

[0028] In this embodiment, the combined artificial vascular external sheath with lymph node power reconstruction includes a sheet 1 and a plurality of ties 2 connected to the sheet. The sheet and the ties are made of expanded polytetrafluoroethylene. The sheet is thin and belt-shaped and covers the vascular bundle. The sheet has a length of 100 mm, a width of 10 mm, and a thickness of 2 mm. The tie has a length of 50 mm, a width of 8 mm, and a thickness of 1 mm. The two side edges of the sheet are respectively designed with linearly distributed and corresponding holes 11. The two ends of the sheet are designed with symmetric connecting holes 12 for facilitating the extension and connection of multiple sheets in the length direction. The holes are matched with the size of the ties and accommodate the ties. As shown in Figure 3, the tail of the tie is designed with a positioning bar 21 for clamping. The size of the positioning bar is larger than the hole. The head of the tie is tapered. The head of the tie passes through one side hole and is fixed with the positioning bar at the tail of the tie. The front and back surfaces of the head of the tie are designed with anti-back-off clamping bars 22 in the form of barbs. The height of the anti-back-off clamping bar is matched with the width of the hole on the other side of the sheet and passes through and locks in the hole. The two side edges of the tie are designed with a plurality of symmetrically distributed hook holes 23. A plurality of ties successively surround and bundle the vascular bundle.

[0029] The guiding device of the combined artificial vascular external sheath with lymph node power reconstruction includes a retractor 4. As shown in Figure 4, the retractor is in the form of an arc-shaped plate. The front end of the retractor is designed with two parallel guide hooks 41 distributed longitudinally and perpendicular to the arc-shaped plate plane of the retractor. The guide hooks are matched with the hook holes on the tie and the openings thereof face backward. The tail of the retractor is designed with a handle 42.

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

[0031] The heads of a plurality of ties successively pass through one side hole of the sheet, respectively, and the positioning bars at the tails of the ties are clamped in the hole, forming a belt-shaped sheet with a plurality of ties.

[0032] Covering and adhering the strip-shaped elastic piece to the surface of the vascular bundle in the direction of the vascular bundle, which needs to be reconstructed;

[0033] Passing the front end of the traction device from below the vascular bundle to the other side of the vascular bundle, corresponding to the corresponding tie;

[0034] Aligning and inserting the guide hook of the front end of the traction device into the hook hole on the corresponding tie, and pulling the traction device to pass the tie head from below the vascular bundle and pull it out;

[0035] Pulling out the guide hook of the traction device, inserting the tie head into the corresponding hole on the other side edge of the elastic piece and tightening it, and binding the vascular bundle with the elastic piece, at this time, the anti-back-off strip on the tie is squeezed and reduced and passes through the hole, and expands elastically after passing through the hole, preventing the tie from retreating, and adjusting the insertion depth of the tie head can adjust the tightness of the tie on the vascular bundle;

[0036] In this way, the pulling and binding of the remaining ties are repeated, and the excess tie heads are cut off, and the installation of the combined artificial blood vessel outer sheath is completed;

[0037] If a longer combined artificial blood vessel outer sheath is needed, additional elastic pieces can be added at both ends of the existing elastic piece, and the covering and binding are performed according to the above operation steps, and the adjacent elastic pieces are fixedly connected through the connecting holes at the ends of the elastic pieces to form a combined artificial blood vessel outer sheath of the required length;

[0038] At this time, the combined artificial blood vessel outer sheath can simulate the peripheral membrane structure of the blood vessel, and the outward propagating power generated by the pulsation of the arterial blood vessels and the fluctuation of the venous blood vessels in the vascular bundle is bounced back by the low-elastic combined artificial blood vessel outer sheath, thereby generating a resultant force to extrude the lymph nodes distributed around the blood vessels, so that the lymph fluid in the lymph nodes flows unidirectionally to the proximal end, thereby re-establishing the power extrusion and stimulation function of the vascular bundle pulsation on the peripheral lymph nodes.

[0039] In the description of the present application, the technical terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the direction or positional relationship based on the direction or positional relationship shown in the drawings, which is only for the convenience of describing and understanding the technical solutions of the present application. The above description is not a limitation on the present application, and the present application is not limited to the above-described examples or embodiments. Changes, modifications, additions or substitutions made by ordinary skilled persons within the scope of the present application should be considered as falling within the protection scope of the present application.

Claims

1. A combined artificial vascular external sheath with reconstituted lymph node power, characterized by: The combined artificial blood vessel outer sheath comprises a spring sheet (1) and a plurality of lacing tapes (2) connected with the spring sheet, the spring sheet is thin and in a strip shape and covers the blood vessel bundle (3), and the plurality of lacing tapes successively surround and bind the blood vessel bundle (3). The two side edges of the spring sheet are respectively provided with linearly distributed and corresponding apertures (11), the apertures are matched with the size of the lacing tapes and accommodate the lacing tapes to pass through, the tail of the lacing tape is provided with a positioning strip (21) for clamping, the positioning strip is larger than the aperture, the head of the lacing tape passes through the aperture on one side and is fixed with the aperture through the positioning strip at the tail of the lacing tape, the surface of the head of the lacing tape is provided with a reverse barb-shaped stopper (22), the height of the stopper is matched with the width of the aperture on the other side of the spring sheet and passes through and is locked in the aperture, and the two side edges of the lacing tape are provided with a plurality of symmetrically distributed hook holes (23).

2. The combined artificial vascular external sheath with reestablished lymph node motility according to claim 1, characterized in that: The two ends of the spring sheet (1) are provided with symmetrically connected holes (12).

3. The combined artificial vascular external sheath with reestablished lymph node motility according to claim 1, characterized in that: The head of the lacing tape (2) is in a conical shape.

4. The combined artificial blood vessel external sheath with reconstructed lymph node motility according to claim 1 or 2 or 3, characterized in that: The material of the spring sheet (1) and the lacing tape (2) is expanded polytetrafluoroethylene or dacron or high-grade silica gel.

5. The combined artificial vascular external sheath with reestablished lymph node motility according to claim 4, characterized in that: The width of the spring sheet (1) is 0.5-2.0 cm, and the thickness of the spring sheet is 0.1-0.3 cm.

6. The guiding device of a combined artificial vascular external sheath with reestablished lymph node motility according to claim 1, characterized in that: The guiding device comprises a tractor (4) in an arc plate structure, the front end of the tractor is provided with two guide hooks (41) which are longitudinally distributed and perpendicular to the arc plate plane of the tractor, the guide hooks are matched with the hook holes on the lacing tape and the openings thereof face backward, and the tail of the tractor is provided with a handle (42).

7. The guide device of claim 6, wherein: The material of the tractor (4) is titanium alloy or stainless steel.

8. The use method of the combined artificial blood vessel outer sheath with reconstructed lymph node dynamics according to claim 1, the operation steps are as follows: the heads of the plurality of lacing tapes successively pass through the aperture on one side of the spring sheet respectively, and the positioning strips at the tails of the lacing tapes are clamped in the aperture, forming a strip-shaped spring sheet with a plurality of lacing tapes; the strip-shaped spring sheet is covered and adhered to the surface of the blood vessel bundle which needs to be reconstructed in the direction of the blood vessel bundle; the front end of the tractor passes through from below the blood vessel bundle to the other side of the blood vessel bundle and corresponds to the lacing tape; the guide hooks at the front end of the tractor are aligned with and inserted into the hook holes on the corresponding lacing tape, the lacing tape is pulled so that the head of the lacing tape passes through from below the blood vessel bundle and is pulled out; the guide hooks of the tractor are disengaged, the head of the lacing tape is inserted into the corresponding aperture on the other side edge of the spring sheet and is tightened, and the lacing tape is bound with the spring sheet, at this time, the stopper on the lacing tape is compressed and reduced and passes through the aperture, and expands after passing through the aperture, preventing the lacing tape from retreating, and the insertion depth of the head of the lacing tape can adjust the tightness of the lacing tape on the blood vessel bundle; in this way, the pulling and binding of the remaining lacing tapes are repeated, the excess lacing tape heads are cut off, and the placement of the combined artificial blood vessel outer sheath is completed; if a longer combined artificial blood vessel outer sheath is needed, the remaining spring sheets can be added to the two ends of the existing spring sheet respectively, the covering and binding are performed according to the above operation steps, and the adjacent spring sheets are fixedly connected through the connected holes at the ends of the spring sheets to form a combined artificial blood vessel outer sheath with the required length. At this time, the combined artificial blood vessel outer sheath covers and ties the peripheral of the blood vessel bundle, can simulate the peripheral membrane structure of the blood vessel, so that the outward power generated by the jumping of the arterial blood vessels and the fluctuation of the venous blood vessels in the blood vessel bundle is bounced back by the low-elastic combined artificial blood vessel outer sheath, thereby generating a resultant force with the above-mentioned power and extruding the lymph nodes distributed around the blood vessels, thereby re-establishing the power extrusion and stimulation function of the blood vessel bundle to the peripheral lymph nodes, which is helpful to the unidirectional flow of lymph in the lymph nodes to the proximal end.

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