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Blood pump having good anti-hemolysis and anti-thrombosis properties and used in surgical heart

A blood pump, intracardiac technology, applied in the field of medical devices, can solve the problem of difficult to meet the performance requirements of anti-hemolysis and anti-thrombosis, and achieve the effect of improving blood compatibility, simple composition and high strength

Inactive Publication Date: 2016-08-10
傅风荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing pump body and impeller materials have been difficult to meet performance requirements such as anti-hemolysis and anti-thrombosis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A blood pump used in an operation heart. The blood pump includes a pump body and an impeller in the pump body. The pump body includes: a cast titanium alloy pump body, a zirconia-based ceramic material layer on the outer surface of the pump, and an impeller on the inner surface of the pump. The titanium carbide-based ceramic material layer, the impeller includes a cast titanium alloy impeller body and a titanium nitride-based ceramic material layer outside the impeller body,

[0023] It is characterized in that the chemical composition of the cast titanium alloy pump body is: Zn: 14.2%, Al: 6.3%, Fe: 4.4%, Si: 1.1%, Mg 1.2%, Ni 0.73%, Cu: 0.54%, Cd: 0.25% , Zr: 0.074﹪, Ce: 0.033﹪, Mn: 0.052﹪, V: 0.061﹪, B: 0.082﹪, the balance is Ti and unavoidable impurities;

[0024] The preparation method of the cast titanium alloy pump body includes the following steps: preparing the alloy according to the above ratio, melting and pouring the alloy material: the melting temperature i...

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Abstract

The invention provides a blood pump having good anti-hemolysis and anti-thrombosis properties and used in a surgical heart. The blood pump comprises a pump body and an impeller in the pump body, wherein the pump body comprises a casting titanium alloy pump body; the impeller comprises a casting titanium alloy impeller body and a titanium nitride series ceramic material layer outside the impeller body; a titanium carbide series ceramic material layer and a zirconium oxide series ceramic material layer are coated on the inner surface and the outer surface of the pump body according to types of human body cells contacted with the pump body at different speeds, so that the requirements on the anti-hemolysis and anti-thrombosis properties and the like of materials are improved.

Description

technical field [0001] The invention relates to a blood pump used in an operating heart, which belongs to implanted pumps and belongs to the technical field of medical instruments. Background technique [0002] Clinically, patients with heart failure usually need to be treated with artificial mechanical assistance devices. At present, the main cardiac assisting therapy device is a blood pump. The existing blood pumps at home and abroad are mainly implantable auxiliary blood pumps. The confirmed damage of blood pumps to blood components is mainly hemolysis and thrombosis. The former refers to the rupture of red blood cells, causing the hemoglobin in the cells to dissociate into the plasma. Middle; the latter refers to platelet aggregation after activation and precipitation on the blood contact surface. Both hemolysis and thrombus will cause the physiological disorder of the recipient, which is life-threatening in severe cases. Existing pump body and impeller materials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10A61M1/12A61L31/02A61L31/08A61L31/14
CPCA61L31/022A61L31/088A61L31/14A61L2400/18A61M2205/02A61M2205/0211A61M2205/0238A61M2207/00A61M60/00A61M60/148A61M60/205
Inventor 傅风荣
Owner 傅风荣
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