Protective sheath for artificial blood vessel and protective device for artificial blood vessel comprising such sheath

Abstract

An artificial blood vessel protecting sleeve (1) is formed by a plurality of identical connected protecting ring units (10); each protecting ring unit comprises an annular body (101), two first flanges (102) which extend from one end surface (101a) of the annular body in the axial direction of the annular body towards a first direction, and two second flanges (103) which extend from another end surface (101b) of the annular body in the axial direction of the annular body towards a second direction which is opposite to the first direction; the first flanges are oppositely arranged on the annular body in the first diameter direction; holes (104) are formed in the first flanges respectively; the two second flanges are oppositely arranged on the annular body in the second diameter direction; bulges (105) are formed in the second flanges respectively; the first diameter direction is perpendicular to the second diameter direction; every two adjacent protecting ring units of the plurality of protecting ring units are connected through clearance fit connection of the holes and the bulges. The artificial blood vessel protection device (100) comprises the artificial blood vessel protection sleeve, a clamping ring and a tail ring.

Description

technical field [0001] The present invention relates to an accessory of an artificially assisted heart blood pump, more particularly to an artificial blood vessel protective cover and an artificial blood vessel protective device including the protective cover. Background technique [0002] The artificial auxiliary heart is installed at the apex of the lower end of the left ventricle of the human body, and the outlet of the blood pump is connected to the root of the aorta with an artificial blood vessel. Due to the installation position and angle, the artificial blood vessel is easily deformed when the bending angle is too large or squeezed by the surrounding human organs. Thrombus is easy to form in the deformed artificial blood vessel, and the thrombus will be harmful to the human body. In order to prevent the occurrence of the above phenomenon, it is necessary to add a protective device outside the artificial blood vessel. [0003] In the Chinese patent with publication d...

AI Technical Summary

Problems solved by technology

[0006] The problem in the above technical solution is: since the artificial blood vessel protective sheath is made of a material with a certain hardness, the above-mentioned artificial blood vessel protective sheath with a pore structure with elongated holes can bend in a small range of angles, and the artificial blood vessel When the protective cover is bent at a certain angle, it will form internal stress and squeeze the surrounding human organs

[0007] In addition, the manufacturing and processing of the pore structure on the tubular body of the protective sleeve of the above-mentioned artificial blood vessel is complicated, and the production cost is relatively high

[0008] Moreover, the length of the above-mentioned artificial blood vessel protection sleeve is fixed once it is manufactured, and its adaptability is relatively poor.

[0009] In addition, the above-mentioned Ω-shaped clamp is prone to insufficient clamping of the artificial blood vessel and the outlet of the blood pump during use, resulting in blood leakage and folds of the artificial blood vessel

[0010] In addition, the fixed connection between the protrusion on the above-mentioned Ω-shaped clamp and the bayonet socket on the protective sleeve of the artificial blood vessel makes the protective sleeve of the artificial blood vessel basically unable to bend at their connection position, thereby limiting the flexibility of the artificial blood vessel at this position. bending degrees of freedom

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