发明名称 |
SINGLE-STAGE AXIAL FLOW BLOOD PUMP. |
摘要 |
<p>A miniature high-speed intravascular blood pump is formed as a single stage with two rows of rotor blades and a single row of stator blades within a tubular housing. The rotor's first row produces a mixed centrifugal and axial flow, while the rotor's second row produces a purely axial flow. The blades of the second row are shaped so as to produce a uniform blood flow along the trailing edges of the blades. For this purpose, the bases of the outer trailing edges of the second row blades have a negative propulsion angle. The pump has a purge-sealed hydrostatic bearing which is spring-loaded for minimum gap. The pump is driven by a cable encased in a dual-lumen, fluid-filled cable sheath formed of a coextrusion of a soft, blood-compatible outer layer and a stiff, abrasion-resistant inner layer. The cable sheath serves both as a purge fluid supply for the bearing, and as a means for flushing abraded debris away from the pump.</p> |
申请公布号 |
EP0396575(B1) |
申请公布日期 |
1994.03.02 |
申请号 |
EP19890900027 |
申请日期 |
1989.06.06 |
申请人 |
NIMBUS MEDICAL, INC. |
发明人 |
WAMPLER, RICHARD, K.;CARRIKER, JOHN, WAYNE;BUTLER, KENNETH, CLARK;MOISE, JOHN, C. |
分类号 |
A61M1/10;A61M1/12;A61M25/00;F04D1/04;F04D3/00;F04D29/04;F04D29/047;F04D29/18;(IPC1-7):A61M1/10 |
主分类号 |
A61M1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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