A multi-layer composite artificial blood vessel with adjustable compliance

A multi-layer composite, artificial blood vessel technology, applied in the field of artificial blood vessels, can solve the problems of difficult biomimetic human blood vessels, fatigue of sutures, difficult to completely remove solvents, etc., and achieve the effect of overcoming the easy formation of thrombus, not easy to form thrombus, and enhancing patency.
CN109498209BActive Publication Date: 2019-11-01ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Publication Date
2019-11-01

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Abstract

The invention discloses a compliance-adjustable multilayer composite artificial blood vessel, and belongs to the technical field of artificial blood vessels. Three layers of composite foaming materialpipes are embedded in a sleeving manner to form the compliance-adjustable multilayer composite artificial blood vessel, the space between the adjacent composite foaming material pipes is filled withgel or proteins, and PCL (polycaprolactone), PLA (polylactic acid) and TPU (thermoplastic polyurethane) are blended and formed to prepare the composite foaming material pipes. The multilayer compositeartificial blood vessel simulates three layers of structures of a natural blood vessel, so that the elastic modulus of the outlet composite foaming material pipe is higher than that of the middle composite foaming material pipe which is higher than that of the inner composite foaming material pipe, the artificial blood vessel can adapt to deformation caused by change of blood flow pressure and solves the problem that thrombi are easily formed by the aid of an existing artificial blood vessel, and the compliance of the artificial blood vessel is improved.
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Description

technical field

[0001] The invention belongs to the technical field of artificial blood vessels, and in particular relates to a multi-layer composite artificial blood vessel with adjustable compliance. Background technique

[0002] When the blood vessels in a certain part of the human body cannot guarantee the normal blood supply to the human body due to reasons such as aging, arteriosclerosis, embolism or damage, surgical operations such as artificial blood vessel replacement, bypass or intervention are required for treatment.

[0003] Human blood vessels have a three-layer structure. Among the biomechanical properties of blood vessels, the most important thing is the compliance of blood vessels. Compliance refers to the expansion degree of the artificial blood vessel wall caused by the pressure in the lumen of the artificial blood vessel under normal diastolic pressure, that is, the relationship between the stress and the strain caused by the blood flow pulsation on the bl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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