发明授权
- 专利标题: Ventricular assist devices of enhanced hemocompatibility
- 专利标题(中): 增强血液相容性的心室辅助装置
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申请号: US469234申请日: 1995-06-06
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公开(公告)号: US5676632A公开(公告)日: 1997-10-14
- 发明人: James A. Davidson
- 申请人: James A. Davidson
- 申请人地址: TN Memphis
- 专利权人: Smith & Nephew Richards, Inc.
- 当前专利权人: Smith & Nephew Richards, Inc.
- 当前专利权人地址: TN Memphis
- 主分类号: A61F2/02
- IPC分类号: A61F2/02 ; A61B17/22 ; A61B17/72 ; A61B17/74 ; A61B17/78 ; A61B17/80 ; A61B17/86 ; A61C7/12 ; A61C8/00 ; A61F2/00 ; A61F2/04 ; A61F2/06 ; A61F2/24 ; A61F2/28 ; A61F2/30 ; A61F2/36 ; A61F2/38 ; A61F2/84 ; A61F2/90 ; A61K6/04 ; A61L27/00 ; A61L27/06 ; A61L27/50 ; A61L31/02 ; A61L33/00 ; A61L33/02 ; A61M1/10 ; A61N1/05 ; C22C14/00 ; C22C30/00 ; A61M1/12
摘要:
Ventricular assist devices fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The ventricular assist devices may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any portion of a ventricular assist device that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.