Patent US3285802A successfully refreshed from Google Patents.
US5772864A
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Method for manufacturing implantable medical devices
Assignee: Boston Scientific Scimed Inc
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Filing: 1996-02-23
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Granted: 1998-06-30
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Expires: 2016-02-23
Abstract
Abstract An implantable medical device such as an intraluminal prosthetic device is formed by an improved manufacturing process. A generally cylindrical mandrel is provided. A reverse image of the prosthesis is engraved into a portion of the mandrel. The reverse image of the prosthesis defines voids and raised surface areas in the mandrel portion. A prosthesis-forming metallic medium is electrochemically deposited into the reverse image of the mandrel. The metallic medium may be a metal, metal alloy or a metal compound. The mandrel including the prosthesis-forming medium thereon is further processed to separate the prosthesis formed by the prosthesis-forming medium from the mandrel by dissolving the mandrel. The process provides greater design freedom in the formation of flexible expandable stents.
Inventors
- 👤 Per M.o slashed.ller
- 👤 J.o slashed.rgen Kamstrup-Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; C; C25; C25D; C25D1/00; C25D1/08; A61F2210/00; A61F2210/0076; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A method of forming an elongate expandable intraluminal prosthesis comprising the steps of: providing a dissolvable elongate mandrel having a metallic electro-deposition accommodating exterior surface portion; engraving a precise open-celled pattern of voids in said surface portion of said mandrel to define a reverse image of said expandable prosthesis; electrochemically depositing a prosthesis-forming metallic medium into said engraved open-celled voids of said dissolvable mandrel; and dissolving said mandrel to leave remaining said expandable prosthesis formed by said prosthesis-forming medium.
Claim 2
Independent Claim
79 words
A method of forming an elongate expandable intraluminal prosthesis comprising the steps of: providing a dissolvable elongate mandrel having a metallic electro-deposition accommodating exterior surface portion; engraving a precise open-celled pattern of voids in said surface portion of said mandrel to define a reverse image of said expandable prosthesis; electrochemically depositing a prosthesis-forming metallic medium into said engraved open-celled voids of said dissolvable mandrel; and dissolving said mandrel to leave remaining said expandable prosthesis formed by said prosthesis-forming medium.
Claim 3
Dependent Claim
20 words
A method of claim 1 wherein said electrochemically depositing step includes: electrochemically pulse plating said voids with said prosthesis-forming material.
Claim 4
Dependent Claim
29 words
A method of claim 1 wherein said electrochemically depositing step further includes depositing said prosthesis-forming medium over said surface portion of said mandrel as well as into said voids.
Claim 5
Dependent Claim
29 words
A method of claim 3 wherein said method further includes: removing said prosthesis-forming material from said surface portion of said mandrel with said prosthesis-forming material remaining in said voids.
Claim 6
Dependent Claim
23 words
A method of claim 4 wherein said removing step includes: machining said surface portion of said mandrel to remove said prosthesis-forming material therefrom.
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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) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |