US5522534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anvil for surgical stapler
Assignee: United States Surgical Corp
•
Filing: 1993-10-01
•
Granted: 1996-06-04
•
Expires: 2013-10-01
Abstract
Abstract An anvil assembly for use with a circular surgical stapling device having a housing and venting means, in the form of vent holes, for venting the interior of the anvil assembly. The housing includes channeling means in the form of a plurality of longitudinally extending and radially spaced surface grooves in an outer surface of the housing which are communicable with the vent holes to aid in directing a flow of air between the vent holes and the outer surface of the housing member to significantly reduce a suction effect therebetween. The channeling means further allows extruded tissue and debris to flow freely from the vent holes.
Inventors
- 👤 Frank J. Viola
- 👤 Phillip D. Calabrese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1155; A61B17/068; A61B17/072; A61B2017/07214; A61B2017/07257
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
127 words
An anvil assembly for use with a surgical fastening device comprising: a) a shaft having first and second ends and mounting means for mounting to the surgical fastening device; b) an anvil member mounted on said shaft at said second end, said anvil member having a housing and an array of fastener clinching means disposed thereon; c) means associated with said housing for venting of gaseous pressure, tissue or debris from within said housing; and d) means formed on an outer surface of said housing and communicable with said venting means for channeling the passage of air, tissue or debris between said outer surface of said housing and a surrounding tissue section, said channeling means including at least and elongated surface depression formed on said outer surface.
Claim 2
Dependent Claim
127 words
An anvil assembly for use with a surgical fastening device comprising: a) a shaft having first and second ends and mounting means for mounting to the surgical fastening device; b) an anvil member mounted on said shaft at said second end, said anvil member having a housing and an array of fastener clinching means disposed thereon; c) means associated with said housing for venting of gaseous pressure, tissue or debris from within said housing; and d) means formed on an outer surface of said housing and communicable with said venting means for channeling the passage of air, tissue or debris between said outer surface of said housing and a surrounding tissue section, said channeling means including at least and elongated surface depression formed on said outer surface.
Claim 3
Dependent Claim
31 words
The anvil assembly as recited in claim 1 wherein said at least one elongated surface depression is at least one longitudinally extending groove formed on said outer surface of said housing.
Claim 4
Dependent Claim
31 words
The anvil assembly as recited in claim 1 wherein said at least one elongated surface depression is a plurality of radially spaced grooves formed on said outer surface of said housing.
Claim 5
Dependent Claim
17 words
The anvil assembly as recited in claim 3 wherein said grooves are radially spaced apart approximately 180°.
Claim 6
Dependent Claim
24 words
The anvil assembly as recited in claim 1 further comprising means disposed on said shaft for detachably removing said anvil member from said shaft.
Claim 7
Dependent Claim
35 words
The anvil assembly as recited in claim 1 wherein said at least one elongated surface depression is a first and a second longitudinally extending groove, said first and second grooves being of substantially unequal dimensions.
Claim 8
Dependent Claim
19 words
The anvil assembly as recited in claim 6 wherein said first and second grooves are of substantially unequal length.
Claim 9
Dependent Claim
18 words
The anvil assembly as recited in claim 1 wherein said channeling means includes a plurality of surface depressions.
Claim 10
Dependent Claim
19 words
The anvil assembly as recited in claim 8 wherein said plurality of surface depressions are of substantially similar dimensions.
Claim 11
Dependent Claim
31 words
The anvil assembly as recited in claim 1 wherein said venting means includes a vent hole extending between an interior of said anvil assembly and said outer surface of said housing.
Claim 12
Dependent Claim
155 words
A circular surgical stapler comprising: a) a frame portion; b) a staple carrying portion containing an annular array of surgical staples, said staple carrying portion mounted on a distal end of said frame; c) at least one handle for driving said annular array of surgical staples from said staple carrying portion; and d) an anvil assembly positioned adjacent said staple carrying portion, said anvil assembly including: i) a shaft having mounting means at one end for mounting to said frame portion; ii) an anvil member mounted on said shaft at a second end of said shaft, said anvil member having a housing and an annular array of anvil cups disposed thereon for crimping said surgical staples; and iv) at least one channel extending over an outer surface of said housing and communicable with an interior thereof for aiding the passage of fluids and tissue between said housing interior and an exterior surface of said housing.
Claim 13
Dependent Claim
155 words
A circular surgical stapler comprising: a) a frame portion; b) a staple carrying portion containing an annular array of surgical staples, said staple carrying portion mounted on a distal end of said frame; c) at least one handle for driving said annular array of surgical staples from said staple carrying portion; and d) an anvil assembly positioned adjacent said staple carrying portion, said anvil assembly including: i) a shaft having mounting means at one end for mounting to said frame portion; ii) an anvil member mounted on said shaft at a second end of said shaft, said anvil member having a housing and an annular array of anvil cups disposed thereon for crimping said surgical staples; and iv) at least one channel extending over an outer surface of said housing and communicable with an interior thereof for aiding the passage of fluids and tissue between said housing interior and an exterior surface of said housing.
Claim 14
Dependent Claim
91 words
In a circular anastomosis surgical apparatus having a frame, a staple carrying part mounted on a distal end portion of said frame, at least one handle for driving an annular array of staples from said staple carrying part, and an anvil asembly for crimping said staples, the improvement comprising an elongated depression formed on an outer surface of the anvil assembly for directing fluids and tissue from an interior of said anvil assembly and between said outer surface of said anvil assembly and a surrounding tissue section to reduce suction therebetween.
Claim 15
Dependent Claim
91 words
In a circular anastomosis surgical apparatus having a frame, a staple carrying part mounted on a distal end portion of said frame, at least one handle for driving an annular array of staples from said staple carrying part, and an anvil asembly for crimping said staples, the improvement comprising an elongated depression formed on an outer surface of the anvil assembly for directing fluids and tissue from an interior of said anvil assembly and between said outer surface of said anvil assembly and a surrounding tissue section to reduce suction therebetween.
Claim 16
Dependent Claim
49 words
The circular anastomosis surgical apparatus as recited in claim 12 wherein said elongated depression includes at least one hole passing through said anvil assembly surface and at least one groove on said anvil assembly outer surface, said at least one groove being associated with said at least one hole.
Claim 17
Dependent Claim
102 words
An anvil assembly for use with a surgical fastening device comprising: a) a shaft configured to be mounted to a surgical fastening device; b) an anvil member mounted to said shaft, said anvil member having a housing and an array of fastener clinching portions disposed thereon; c) a plurality of vent holes extending between an interior of said anvil member and an outer surface of said housing for venting of gaseous pressure and tissue debris from within said anvil member; and d) a plurality of longitudinally extending grooves formed on said outer surface of said housing and communicable with said vent holes.
Claim 18
Dependent Claim
102 words
An anvil assembly for use with a surgical fastening device comprising: a) a shaft configured to be mounted to a surgical fastening device; b) an anvil member mounted to said shaft, said anvil member having a housing and an array of fastener clinching portions disposed thereon; c) a plurality of vent holes extending between an interior of said anvil member and an outer surface of said housing for venting of gaseous pressure and tissue debris from within said anvil member; and d) a plurality of longitudinally extending grooves formed on said outer surface of said housing and communicable with said vent holes.
References Cited (Backward Citations)
US4304236A
Cited
US4603693A
Cited
US4573468A
Cited
US4319576B1
Cited
US4319576A
Cited
GB2070499A
Cited
US4606343A
Cited
US4351466A
Cited
USD271994S
Cited
US4646745A
Cited
USD273041S
Cited
US4473077A
Cited
US4488523A
Cited
US4700703A
Cited
US4903697A
Cited
US5005749A
Cited
US5122156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-04 | 1999-12-04 | 2000-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-04 | 2003-12-04 | 2004-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-04 | 2007-12-04 | 2008-06-04 | $7700.00 | Window Closed / Lapsed |