Patent US4917114A successfully refreshed from Google Patents.
US4917114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical fastener and surgical stapling apparatus
Assignee: United States Surgical Corp
•
Filing: 1988-04-01
•
Granted: 1990-04-17
•
Expires: 2008-04-01
Abstract
Abstract The two-part surgical fastener is composed of an annular stapling part having projecting prongs and annular retaining board having an annular gap which receives the prongs. Barbs on the prongs serve to abutt against a retaining ring on the retaining part to maintain a fixed relationship between the parts for stapling purposes. The anvil assembly on which the retaining part of the fastener is mounted as fingers which can be collapsed radially inwardly after stapling to permit ease of removal.
Inventors
- 👤 David T. Green
- 👤 Herbert W. Korthoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1155; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45529; Y10T24/45534
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
78 words
A surgical fastener comprising an annular stapling part having a plurality of axially extending circumferentially spaced prongs, each said prong having a sharp tip for piercing tissue; an annular retaining part having an annular gap for receiving said prongs, said gap being of an axial length less than an axial length of said prongs to permit passage of said prongs therethrough; and catching means for holding said prongs in said retaining part to clamp the pierced tissue therebetween.
Claim 2
Dependent Claim
78 words
A surgical fastener comprising an annular stapling part having a plurality of axially extending circumferentially spaced prongs, each said prong having a sharp tip for piercing tissue; an annular retaining part having an annular gap for receiving said prongs, said gap being of an axial length less than an axial length of said prongs to permit passage of said prongs therethrough; and catching means for holding said prongs in said retaining part to clamp the pierced tissue therebetween.
Claim 3
Dependent Claim
31 words
A surgical fastener as set forth in claim 1 wherein said catch means includes a radially extending barb on at least some of said prongs for abutting against said retaining part.
Claim 4
Dependent Claim
18 words
A surgical fastener as set forth claim 2 wherein each barb is disposed radially of a respective tip.
Claim 5
Dependent Claim
45 words
A surgical fastener as set forth in claim 1 wherein said retaining part includes a cylindrical guide wall, a concentrically spaced retaining ring, and means securing said ring to said guide wall in radially spaced relation to define said annular gap to receive said prongs.
Claim 6
Dependent Claim
41 words
A surgical fastener as set forth in claim 4 wherein said catch means includes a radially extending barb on each respective prong for abutting said ring on a side remote from said stapling part with said prongs disposed in said gap.
Claim 7
Dependent Claim
30 words
A surgical fastener as set forth in claim 5 wherein at least one of said guide wall and ring is radially resiliently deformable to permit passage of said barbs therebetween.
Claim 8
Dependent Claim
17 words
A surgical fastener as set forth in claim 1 wherein each said part is made of plastic.
Claim 9
Dependent Claim
21 words
A surgical fastener as set forth in claim 1 wherein each of said parts is made of a tissue absorbable polymer.
Claim 10
Dependent Claim
71 words
A surgical fastener comprising an annular stapling part having a plurality of axially extending circumferentially spaced prongs, each said prong having a sharp tip for piercing tissue; an annular retaining part including an inner cylindrical guide wall and a concentrically disposed outer retaining ring defining an annular gap for receiving said prongs; and catch means for holding said prongs in said retaining part between said guide wall and said retaining ring.
Claim 11
Dependent Claim
71 words
A surgical fastener comprising an annular stapling part having a plurality of axially extending circumferentially spaced prongs, each said prong having a sharp tip for piercing tissue; an annular retaining part including an inner cylindrical guide wall and a concentrically disposed outer retaining ring defining an annular gap for receiving said prongs; and catch means for holding said prongs in said retaining part between said guide wall and said retaining ring.
Claim 12
Dependent Claim
31 words
A surgical fastener as set forth in claim 9 wherein said catch means includes a radially extending barb on at least some of said prongs for abutting against said retaining ring.
Claim 13
Dependent Claim
30 words
A surgical fastener as set forth in claim 10 wherein at least one of said guide wall and ring is radially resiliently deformable to permit passage of said barbs therebetween.
Claim 14
Dependent Claim
21 words
A surgical fastener as set forth in claim 9 wherein each of said parts is made of a tissue absorbable polymer.
References Cited (Backward Citations)
US833458A
Cited
US874957A
Cited
US1480746A
Cited
FR1103760A
Cited
US3258012A
Cited
US4233981A
Cited
US4356601A
Cited
US4351466A
Cited
US4508374A
Cited
US4473077A
Cited
US4624257A
Cited
US4488523A
Cited
US4534088A
Cited
US4632435A
Cited
US4747407A
Cited
US4780037A
Cited
US4666355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |