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Blood pump in surgical heart

A blood pump, intracardiac technology, applied in the field of medical devices, can solve problems such as difficulty in meeting performance requirements such as anti-hemolysis and anti-thrombosis

Active Publication Date: 2015-08-26
江苏三和生物工程股份有限公司
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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

[0045] 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,

[0046] It is characterized in that the chemical composition of the cast titanium alloy pump body is: Zn: 14%, Al: 6%, Fe: 4%, Si: 1%, Mg 1%, Ni 0.7%, Cu: 0.5%, Cd: 0.2% , Zr: 0.07﹪, Ce: 0.03﹪, Mn: 0.05﹪, V: 0.06﹪, B: 0.08﹪, the balance is Ti and unavoidable impurities;

[0047] 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 is 1810°C, and the ...

Embodiment 2

[0060] 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,

[0061] It is characterized in that the chemical composition of the cast titanium alloy pump body is: Zn: 15%, Al: 7%, Fe: 5%, Si: 2%, Mg 2%, Ni 0.8%, Cu: 0.6%, Cd: 0.3% , Zr: 0.08﹪, Ce: 0.04﹪, Mn: 0.06﹪, V: 0.07﹪, B: 0.09%, the balance is Ti and unavoidable impurities;

[0062] 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 is 1820°C, and the ...

Embodiment 3

[0075] 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,

[0076] It is characterized in that the chemical composition of the cast titanium alloy pump body is: Zn: 14.5%, Al: 6.5%, Fe: 4.5%, Si: 1.5%, Mg 1.5%, Ni 0.75%, Cu: 0.55%, Cd: 0.25% , Zr: 0.075﹪, Ce: 0.035﹪, Mn: 0.055﹪, V: 0.065﹪, B: 0.085﹪, the balance is Ti and unavoidable impurities;

[0077] 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 discloses a blood pump in a surgical heart. The blood pump comprises a pump body, and an impeller in the pump body, wherein the pump body comprises a cast titanium alloy pump body, a zirconium oxide ceramic material layer on the outer surface of the pump body, and a titanium carbide ceramic material layer on the inner surface of the pump body; the impeller comprises a cast titanium alloy impeller body, and a titanium nitride ceramic material layer outside the impeller body; as the titanium nitride ceramic material layer is coated on the surface of the impeller according to the type and speed differences of the impeller contacted with human cells, the material and blood compatibility is improved; and as the titanium carbide ceramic material and the zirconium oxide ceramic material layer are coated on the inner surface and the outer surface of the pump body according to the type and speed differences of the pump body contacted with the human cells, such performance requirements as hemolysis resistance and thrombus resistance 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): C22C14/00C22F1/18C23C22/34C23G1/10A61M1/12C04B35/58
CPCA61L31/022A61L31/088A61L31/14A61L2400/18A61M2205/02A61M2205/0211A61M2205/0238A61M2207/00A61M60/00A61M60/148A61M60/205
Inventor 傅风荣
Owner 江苏三和生物工程股份有限公司