US5765418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making an implantable medical device from a refractory metal
Assignee: Medtronic Inc
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Filing: 1995-12-06
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Granted: 1998-06-16
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Expires: 2015-12-06
Abstract
Abstract A method for making an implantable medical device from a drawn refractory metal which has an improved biocompatible surface. The method includes coating a refractory metal article with platinum by a physical vapor deposition process and subjecting the coated 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 14:00
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: 18
Claim 1
Independent Claim
85 words
A method for making an implantable medical device comprising the steps of: (a) providing an elongated article of a metal selected from the group consisting of titanium, tantalum and alloys thereof; (b) coating the metal article with a thin coating of platinum; (c) subjecting the coated article to drawing in a diamond die and; (d) incorporating the drawn article into an implantable medical device at a portion of the medical device intended for exposure to body tissue or body fluids without removing the coated platinum.
Claim 2
Independent Claim
85 words
A method for making an implantable medical device comprising the steps of: (a) providing an elongated article of a metal selected from the group consisting of titanium, tantalum and alloys thereof; (b) coating the metal article with a thin coating of platinum; (c) subjecting the coated article to drawing in a diamond die and; (d) incorporating the drawn article into an implantable medical device at a portion of the medical device intended for exposure to body tissue or body fluids without removing the coated platinum.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the wire is of a ribbon-like configuration.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the wire is a titanium alloy.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein the coating process is a physical vapor deposition process.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the coating ranges in thickness from about 500 Å to about 3000 Å.
Claim 7
Dependent Claim
10 words
The method of claim 3 wherein the alloy is Ti64-6Al-4V.
Claim 8
Independent Claim
75 words
A method for making an implantable medical device comprising the steps of: (a) providing an elongated article of refractory metal; (b) coating the refractory metal article with a biologically inert lubricant metal; (c) subjecting the coated article to drawing in a diamond die; and, (d) incorporating the drawn article into an implantable medical device at a portion of the medical device intended for exposure to body tissue or body fluids without removing the coated metal.
Claim 9
Independent Claim
75 words
A method for making an implantable medical device comprising the steps of: (a) providing an elongated article of refractory metal; (b) coating the refractory metal article with a biologically inert lubricant metal; (c) subjecting the coated article to drawing in a diamond die; and, (d) incorporating the drawn article into an implantable medical device at a portion of the medical device intended for exposure to body tissue or body fluids without removing the coated metal.
Claim 10
Dependent Claim
14 words
The method of claim 7 wherein the article to be drawn is titanium wire.
Claim 11
Dependent Claim
15 words
The method of claim 7 wherein the coating process is a physical vapor deposition process.
Claim 12
Dependent Claim
18 words
The method of claim 7 wherein the coating ranges in thickness from about 500 Å to about 3000Å.
Claim 13
Dependent Claim
14 words
The method of claim 7 wherein the article to be drawn is tantalum wire.
Claim 14
Dependent Claim
13 words
The method of claim 7 wherein the biologically inert lubricant metal is platinum.
Claim 15
Dependent Claim
13 words
The method of claim 8 wherein the wire is of a ribbon-like configuration.
Claim 16
Dependent Claim
12 words
The method of claim 8 wherein the wire is a titanium alloy.
Claim 17
Dependent Claim
13 words
The method of claim 8 wherein the wire is of a ribbon-like configuration.
Claim 18
Dependent Claim
10 words
The method of claim 14 wherein the alloy is Ti64-6Al-4V.
References Cited (Backward Citations)
US2992135A
Cited
US2900715A
Cited
US3339271A
Cited
US3416342A
Cited
US3429158A
Cited
US3641795A
Cited
US3698050A
Cited
US3905828A
Cited
US3905828B1
Cited
US4081335A
Cited
US4815309A
Cited
US4859811A
Cited
JPH0237912A
Cited
JPH0259109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |