US5505363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical staples with plated anvils
Assignee: United States Surgical Corp
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Filing: 1995-03-15
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Granted: 1996-04-09
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Expires: 2015-03-15
Abstract
Abstract The present invention relates to anvils for surgical fastener applicators having a fastener forming surface for forming surgical fasteners, an intermediate surface formed of a metallic alloy disposed on at least a portion of the fastener forming surface and a polytetrafluorethylene coating disposed on the intermediate surface. The polytetrafluorethylene coating is provided to reduce the force necessary to form the fasteners.
Inventors
- 👤 David T. Green
- 👤 Henry Bolanos
- 👤 Gary S. Kappel
- 👤 Karl H. Ehrenfels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B17/00234; A61B2017/07214; A61B2017/07257; A61B2017/07264
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
84 words
An anvil for surgical fastener applicators, said anvil comprising a fastener forming support member at least a portion thereof including a surgical fastener forming surface having fastener forming depressions to form at least one surgical fastener driven thereagainst, said surgical fastener forming surface having an intermediate surface portion formed of a hardened material disposed on at least a portion of said fastener forming depressions and an outer surface portion formed of a friction reducing material disposed on said intermediate surface portion of hardened material.
Claim 2
Dependent Claim
84 words
An anvil for surgical fastener applicators, said anvil comprising a fastener forming support member at least a portion thereof including a surgical fastener forming surface having fastener forming depressions to form at least one surgical fastener driven thereagainst, said surgical fastener forming surface having an intermediate surface portion formed of a hardened material disposed on at least a portion of said fastener forming depressions and an outer surface portion formed of a friction reducing material disposed on said intermediate surface portion of hardened material.
Claim 3
Dependent Claim
18 words
The anvil according to claim 1, wherein said layer of hardened material is formed from a metallic alloy.
Claim 4
Dependent Claim
24 words
The anvil according to claim 2, wherein said metallic alloy is selected from the group consisting of nickel, gold, silver, titanium nitride and chromium.
Claim 5
Dependent Claim
25 words
The anvil according to claim 2, wherein said layer of metallic alloy is in the range of between about 100μ and about 2000μ in thickness.
Claim 6
Dependent Claim
15 words
The anvil according to claim 2, wherein said metallic alloy is applied by electroless plating.
Claim 7
Dependent Claim
15 words
The anvil according to claim 2, wherein said metallic alloy is applied by vapor deposition.
Claim 8
Dependent Claim
16 words
The anvil according to claim 1, wherein said layer of hardened material is formed from ceramic.
Claim 9
Dependent Claim
25 words
The anvil according to claim 7, wherein said layer of ceramic is in the range of between about 0.0003 and about 0.0004 inches in thickness.
Claim 10
Dependent Claim
16 words
The anvil according to claim 7, wherein said layer of ceramic is applied by spray deposition.
Claim 11
Dependent Claim
15 words
The anvil according to claim 1, wherein said layer of friction reducing material comprises PTFE.
Claim 12
Dependent Claim
25 words
The anvil according to claim 1, wherein said layer of PTFE is in the range of between about 0.0001 and about 0.0003 inches in thickness.
Claim 13
Dependent Claim
76 words
An anvil for a surgical stapler which comprises: an anvil plate of monolithic construction having a staple forming surface defined thereby; a plurality of staple forming depressions formed on said staple forming surface for forming a plurality of surgical staples; an intermediate surface portion formed of a metallic alloy disposed on at least a portion of said staple forming depressions; and an outer surface portion formed of PTFE disposed at least on said intermediate surface portion.
Claim 14
Dependent Claim
76 words
An anvil for a surgical stapler which comprises: an anvil plate of monolithic construction having a staple forming surface defined thereby; a plurality of staple forming depressions formed on said staple forming surface for forming a plurality of surgical staples; an intermediate surface portion formed of a metallic alloy disposed on at least a portion of said staple forming depressions; and an outer surface portion formed of PTFE disposed at least on said intermediate surface portion.
Claim 15
Dependent Claim
29 words
The anvil according to claim 12, wherein said intermediate surface portion is formed from a material selected from the group consisting of nickel, gold, silver, titanium nitride and chromium.
Claim 16
Dependent Claim
24 words
The anvil according to claim 13, wherein said intermediate surface portion is in the range of between about 100μ and about 2000μ in thickness.
Claim 17
Dependent Claim
15 words
The anvil according to claim 12, wherein said metallic alloy is applied by electroless plating.
Claim 18
Dependent Claim
15 words
The anvil according to claim 12, wherein said metallic alloy is applied by vapor deposition.
Claim 19
Dependent Claim
23 words
The anvil according to claim 12, wherein said outer surface is in the range of between about 0.0001 and about 0.0003 in thickness.
References Cited (Backward Citations)
US5160318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-09 | 1999-10-09 | 2000-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-09 | 2003-10-09 | 2004-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-09 | 2007-10-09 | 2008-04-09 | $7700.00 | Window Closed / Lapsed |