Artificial blood vessel and method for manufacturing artificial blood vessel

By alternating high-density and low-density areas in the artificial blood vessel and providing a strip-shaped portion in the axial direction, clear compression stripes and node bends are formed through multiple compression and elongation processes, thus solving the problem of insufficient softness of ePTFE artificial blood vessels and achieving higher softness and adaptability.

CN120678563APending Publication Date: 2025-09-23HI-LEX CORPORATION
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Patent Information

Application Number
CN202411850563.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-03-22
Filing Date
2024-12-16
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

Existing artificial blood vessels made of ePTFE are not flexible enough and cannot meet the demand for higher flexibility.

Method used

High-density areas and low-density areas are alternately arranged in the axial direction of the artificial blood vessel, and a strip-shaped portion is provided in the axial direction to limit its elongation. Through multiple compression and elongation processes, clear compression stripes and node bends are formed to improve softness.

Benefits of technology

The flexibility of artificial blood vessels is significantly improved, ensuring that they can better adapt to the deformation requirements of the organism during use.

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Abstract

The purpose of the present invention is to provide an artificial blood vessel having high flexibility and a method for manufacturing the artificial blood vessel. An artificial blood vessel (VE) according to the present invention is an artificial blood vessel (VE) comprising expanded polytetrafluoroethylene having nodes and fibrils formed between the nodes, in which high-density regions (R1) and low-density regions (R2) are alternately provided in the axial direction (D1) of the artificial blood vessel (VE), the high-density region (R1) is a region in which nodes and fibrils are compressed and dense in the axial direction (D1), and the low-density region (R2) is a region in which nodes and fibrils are in a lower-density state than the high-density region (R1).
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