Patent US5484422A successfully refreshed from Google Patents.
US5484422A
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US
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Catheter needle having surface indication thereon and process for forming such catheter
Assignee: Ethicon Endo Surgery Inc
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Filing: 1993-09-10
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Granted: 1996-01-16
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Expires: 2013-09-10
Abstract
Abstract A catheter needle having surface indication thereon and process for forming such catheter by laser marking of the needle with a visual surface indicator of the terminus of the catheter tube.
Inventors
- 👤 Thomas E. Sloane, Jr.
- 👤 Zinovy Altman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:53
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065; A61M25/0009; A61M25/001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A catheter assembly comprising: an insertion needle having a sharpened point and a passage defined therein; a catheter having a hub and a distal portion of tubular material disposed over said needle and ending in a distal tip; said needle having a surface finish of a first visual quality over a major portion thereof and a second visual portion immediately adjacent the distal tip of said catheter indicating the tip of the catheter on the surface of the needle wherein said second visual portion is a modified surface finish which is more reflective than the remainder of the surface finish of the needle.
Claim 2
Dependent Claim
103 words
A catheter assembly comprising: an insertion needle having a sharpened point and a passage defined therein; a catheter having a hub and a distal portion of tubular material disposed over said needle and ending in a distal tip; said needle having a surface finish of a first visual quality over a major portion thereof and a second visual portion immediately adjacent the distal tip of said catheter indicating the tip of the catheter on the surface of the needle wherein said second visual portion is a modified surface finish which is more reflective than the remainder of the surface finish of the needle.
Claim 3
Dependent Claim
39 words
The catheter according to claim 1 wherein said second visual portion is formed of a higher concentration of chromium at the surface of said second portion than is present at the surface of the remaining portion of said needle.
Claim 4
Dependent Claim
34 words
The catheter according to claim 1 wherein the needle has an at least partially oxidized outer layer and said second visual portion is defined by removal of said oxidized outer layer of said needle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |