Medical mechanical micro-power pump for treating cardiovascular disease

A medical device and cardiovascular technology, applied in the field of medical devices, can solve problems such as difficult to meet performance requirements such as anti-hemolysis and anti-thrombosis

Inactive Publication Date: 2015-07-01
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

[0045] A microdynamic pump for medical equipment for treating cardiovascular diseases, which includes a pump body and an impeller installed inside the pump body, and the impeller includes a cast titanium alloy impeller body and a zirconia-based ceramic material layer outside the impeller body; the pump The body includes: a cast titanium alloy pump body, a titanium nitride-based ceramic material layer on the outer surface of the pump body, and a titanium carbide-based ceramic material layer on the inner surface of the pump body.

[0046] It is characterized in that the chemical composition of the cast titanium alloy impeller body is Cu: 12%, Al: 9%, Si: 5%, Zn: 1%, Co: 0.5%, Fe: 0.2%, Ag: 0.1%, Cr: 0.1 ﹪, Zr: 0.05﹪, La: 0.05﹪, Ta: 0.03﹪, B: 0.02﹪, the balance is Ti and unavoidable impurities;

[0047] The preparation method of the cast titanium alloy impeller body includes the following steps: preparing the alloy according to the above ratio, melting and pouring the alloy mater...

Embodiment 2

[0060] A microdynamic pump for medical equipment for treating cardiovascular diseases, which includes a pump body and an impeller installed inside the pump body, and the impeller includes a cast titanium alloy impeller body and a zirconia-based ceramic material layer outside the impeller body; the pump The body includes: a cast titanium alloy pump body, a titanium nitride-based ceramic material layer on the outer surface of the pump body, and a titanium carbide-based ceramic material layer on the inner surface of the pump body.

[0061] It is characterized in that the chemical composition of cast titanium alloy impeller body is Cu: 13%, Al: 10%, Si: 6%, Zn: 2%, Co: 0.6%, Fe: 0.3%, Ag: 0.2%, Cr: 0.2 ﹪, Zr: 0.08﹪, La: 0.08﹪, Ta: 0.04﹪, B: 0.03﹪, the balance is Ti and unavoidable impurities;

[0062] The preparation method of the cast titanium alloy impeller body: includes the following steps: preparing the alloy according to the above ratio, melting and pouring the alloy materia...

Embodiment 3

[0075] A microdynamic pump for medical equipment for treating cardiovascular diseases, which includes a pump body and an impeller installed inside the pump body, and the impeller includes a cast titanium alloy impeller body and a zirconia-based ceramic material layer outside the impeller body; the pump The body includes: a cast titanium alloy pump body, a titanium nitride-based ceramic material layer on the outer surface of the pump body, and a titanium carbide-based ceramic material layer on the inner surface of the pump body.

[0076] It is characterized in that the chemical composition of the cast titanium alloy impeller body is Cu: 12.5%, Al: 9.5%, Si: 5.5%, Zn: 1.5%, Co: 0.55%, Fe: 0.25%, Ag: 0.15%, Cr: 0.15 ﹪, Zr: 0.06﹪, La: 0.06﹪, Ta: 0.035﹪, B: 0.025﹪, the balance is Ti and unavoidable impurities;

[0077] The preparation method of the cast titanium alloy impeller body includes the following steps: preparing the alloy according to the above ratio, melting and pouring t...

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Abstract

The invention provides a medical mechanical micro-power pump for treating cardiovascular disease. The medial mechanical micro-power pump comprises a pump body, and an impeller mounted in the pump body, wherein the impeller comprises a casting titanium alloy impeller body, and a zirconium oxide ceramic material layer at the outside of the impeller body; the pump body comprises a casting titanium alloy pump, a titanium nitride 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. According to the medial mechanical micro-power pump, the zirconium oxide ceramic material layer coats the surface of the pump body according to the type and speed of the impeller in contact with human cells, so that the anti-hemolysis performance and antithrombus and other performances of the material can be 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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IPC IPC(8): A61M1/12C22C14/00C23C22/34C23G1/10C23C24/08
CPCA61M60/148A61M60/205C04B35/5611C04B35/58014C04B35/62222C04B2235/3813C04B2235/3826C04B2235/3839C04B2235/3847C04B2235/3886C22C14/00C22F1/183C23C22/34C23C24/082C23C2222/20C23G1/106
Inventor 傅风荣
Owner 傅风荣
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