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Artificial blood vessel with variable supporting force

A technology of artificial blood vessels and supporting force, applied in the field of artificial blood vessels, can solve the problems of complicated operation, increased burden on doctors, and complex structure.

Pending Publication Date: 2022-02-08
王沛 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the product is complex and the operation is cumbersome, and when the anchoring umbrella is opened, it is necessary to fill the leak-proof bags at both ends to prevent leakage, which increases the burden on doctors and reduces the reliability of the device

Method used

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  • Artificial blood vessel with variable supporting force
  • Artificial blood vessel with variable supporting force
  • Artificial blood vessel with variable supporting force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Such as figure 1 As shown, the present invention consists of 100 artificial blood vessel structures and 200 covered stents, and the 200 covered stents are in a compressed state and are wrapped and fixed by 300 wrapping structures. The 100 artificial blood vessel structure is a mixed braid of polyester and natural silk, with corrugated protrusions on the surface, which has good flexibility and biocompatibility, with a diameter of 7mm and a length of 160mm; the 300 wrapping structure is a barrel-shaped braid made of polyester , with 320 nylon brushed on it, the outer diameter of the barrel braid is 6mm, and the length is 28mm.

[0086] The 200 covered stent is a 210 single-layer anchoring stent and is connected with the artificial blood vessel by suturing, such as Figure 5 The length is 30mm, and the 260 polymer film is EPTFE (thickness 0.3mm). There are round holes with an outer diameter of 0.2mm on the film. 3mm. The polymer coating is connected and fused with the s...

Embodiment 2

[0091] Such as figure 1 As shown, the present invention consists of 100 artificial blood vessel structures and 200 covered stents, and the 200 covered stents are in a compressed state and are wrapped and fixed by 300 wrapping structures. The structure of the 100 artificial blood vessel is a mixed braid of polyester and polyurethane, and PTFE (polytetrafluoroethylene) is attached on the inside. There are striped protrusions on the surface, which have good flexibility and support performance. The diameter is 8mm and the length is 220mm; the 300 wrapping structure is made of Barrel braid made of polyurethane and nylon with brushed 320 nylon, outer diameter of barrel braid is 5mm, length is 40mm.

[0092] The 200 covered stent is a 210 single-layer anchoring stent and is connected with the artificial blood vessel by bonding, such as Figure 6The length is 40mm, and the 260 polymer coating (thickness 0.2mm) is EPTFE (porous polytetrafluoroethylene) and FEP (fluorinated ethylene pr...

Embodiment 3

[0097] Such as figure 1 As shown, the present invention consists of 100 artificial blood vessel structures and 200 covered stents, and the 200 covered stents are in a compressed state and are wrapped and fixed by 300 wrapping structures. The structure of 100 artificial blood vessels is polyurethane braid and EPTFE (porous polytetrafluoroethylene) is attached on the inside and outside. Barrel braid made of polyurethane and polyester, with 320 polyurethane brushed on it, the outer diameter of the barrel braid is 4mm, and the length is 20mm. The 200 covered stent is a 210 single-layer anchoring stent and is connected to the artificial blood vessel by means of heat compression, such as Figure 7 The length is 25mm, and the 260 polymer film is PTFE (polytetrafluoroethylene) and EPTFE (porous polytetrafluoroethylene). There are round holes of different sizes on the film, and the distance between the round holes is 6mm, near the connecting section of the 100 artificial blood vessel ...

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Abstract

The invention provides an artificial blood vessel with variable supporting force. The artificial blood vessel comprises a first fixing device, an artificial blood vessel body and a second fixing device which are communicated in sequence. Compared with the prior art, the artificial blood vessel of the invention has the following characteristics that the fixing device can provide different supporting force in different use stages, integrates effective fixing and flexibility, has rapid anchoring function at the fixing end, and can be rapidly connected with blood vessel tissue, and the middle artificial blood vessel body structure has the excellent bending resistance, and can rapidly provide a bypass pipeline at an embolism part, so that the operation time is shortened, the burden of a doctor is relieved, and the operation risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of artificial blood vessels, in particular to an artificial blood vessel with variable supporting force. Background technique [0002] Cardiovascular disease is the cause of the highest mortality rate in the world, and vascular bypass grafting is considered to be the best choice for patients who need long-term maintenance of revascularization. Among them, autologous blood vessels are the most ideal donors for vascular transplantation. However, due to the lack of sources of autologous blood vessels and the trauma damage to the cut site, the wide application of autologous blood vessels is greatly limited. or alternatives for occlusive vessels. At present, artificial blood vessels are mostly made of polymer synthetic materials such as nylon, polyester, and polytetrafluoroethylene, which are suitable for the replacement and reconstruction of blood vessels throughout the body. Large and medium-caliber artificial...

Claims

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Application Information

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IPC IPC(8): A61F2/06
CPCA61F2/06A61F2220/0016A61F2250/0039
Inventor 王宇飞王沛刘静怡王书晗曹苹
Owner 王沛