US4777096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet containing a plurality of surgical needles
Assignee: Ethicon Inc
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Filing: 1987-03-17
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Granted: 1988-10-11
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Expires: 2007-03-17
Abstract
Abstract Surgical needles are produced by a process which comprises the steps of: (a) coating at least one side of a metal sheet with a light sensitive photoresist; (b) exposing the photoresist with light in the image of a plurality of surgical needles, each needle having a pointed end and a suture attachment end; (c) removing the unexposed photoresist, to thereby leave in place on the metal sheet hardened photoresist in the image of a plurality of surgical needles; (d) exposing the product of step (c) to an etchant to remove metal not protected by said hardened photoresist, to thereby form a plurality of surgical needles.
Inventors
- 👤 Emil Borysko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
G; G03; G03F; G03F7/00; A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06004; A61B17/06066; B; B21; B21G; B21G1/00; B21G1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12188; Y10T428/12229
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
A unitary metal sheet formed from a single sheet of metal containing a plurality of surgical needles, each needle having a pointed end and a suture attachment end, wherein the needles are arranged in a spaced relationship along a plurality of continuous rows, and wherein said needles are attached at said suture attachment end by breakable connections to base rows that extend substantially across the width of said sheet.
Claim 2
Dependent Claim
69 words
A unitary metal sheet formed from a single sheet of metal containing a plurality of surgical needles, each needle having a pointed end and a suture attachment end, wherein the needles are arranged in a spaced relationship along a plurality of continuous rows, and wherein said needles are attached at said suture attachment end by breakable connections to base rows that extend substantially across the width of said sheet.
Claim 3
Dependent Claim
49 words
The metal sheet of claim 1 wherein the suture attachment end of said needle includes a bilevel channel including a channel on opposite sides of said needle, wherein the said two channels are offset longitudinally but overlap, and wherein the two channels communicate with each other at the overlap.
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |