US5824056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable medical device formed from a refractory metal having a thin coating disposed thereon
Assignee: Medtronic Inc
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Filing: 1997-04-03
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Granted: 1998-10-20
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Expires: 2017-04-03
Abstract
Abstract An implantable medical device formed from a drawn refractory metal and having an improved biocompatible surface is described. The method by which the device is made includes coating a refractory metal article with platinum by a physical vapor deposition process and subjecting the coating article to drawing in a diamond die. The drawn article can be incorporated into an implantable medical device without removing the deposited metal.
Inventors
- 👤 Duane L. Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61L; A61L31/00; A61L31/08; A61L31/082; A61L31/14; B; B21; B21C; B21C37/00; B21C37/04; B21C37/042; B21F; B21F45/00; B21F45/008; A61B; A61B17/00; A61B17/064; A61F2/86; A61F2/90; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00035; A61F2310/00131
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
An implantable medical device comprising an elongated article intended for exposure to body tissue or body fluids, the elongated article comprising a refractory metal coated by a physical vapor disposition process to form a coating thereon, the coating forming a biologically inert metal lubricant having a thickness ranging between about 500 Angstrom and about 3000 Angstrom, the article being drawn in a diamond die to form a smooth biocompatible surface finish.
Claim 2
Dependent Claim
71 words
An implantable medical device comprising an elongated article intended for exposure to body tissue or body fluids, the elongated article comprising a refractory metal coated by a physical vapor disposition process to form a coating thereon, the coating forming a biologically inert metal lubricant having a thickness ranging between about 500 Angstrom and about 3000 Angstrom, the article being drawn in a diamond die to form a smooth biocompatible surface finish.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-19 | 2002-04-20 | 2002-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-19 | 2006-04-20 | 2006-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-19 | 2010-04-20 | 2010-10-20 | $7700.00 | Window Closed / Lapsed |