Patent US5445644A successfully refreshed from Google Patents.
US5445644A
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Pyloroplasty/pylorectomy shield
Assignee: Ethicon Inc
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Filing: 1994-03-30
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Granted: 1995-08-29
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Expires: 2014-03-30
Abstract
Abstract A pyloroplasty/pylorectomy shield having a base member and a proximally extending shield member. The pyloroplasty/pylorectomy shield has attachment means for engagement with a circular stapler. The pyloroplasty/pylorectomy shield also has dilation means for progressively dilating a sphincter. The pyloroplasty/pylorectomy shield is used with a circular stapler to perform a pyloroplasty/pylorectomy. Also disclosed is a method of performing a pyloroplasty/pylorectomy using the pyloroplasty/pylorectomy shield of the present invention. The pyloroplasty/pylorectomy shield has numerous advantages including reduced trauma, decreased misalignment resulting in improved stapling and improved positioning of the pyloroplasty/pylorectomy.
Inventors
- 👤 Joseph J. Pietrafitta
- 👤 Ronald D. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1155; A61B90/00; A61B90/08; A61B2090/0801; A61B2090/08021; A61M; A61M29/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
A pyloroplasty/pylorectomy shield for a circular stapler comprising: a base member having a proximal end and a distal end said proximal end having an arcuate outer periphery; anvil means mounted to the proximal end of said member interior to said arcuate outer periphery; attachment means mounted to the proximal end of said member for engagement with a circular stapler; a shield member extending axially from a section of the arcuate outer periphery of the proximal end of said member; and dilation means extending from the distal end of said member.
Claim 2
Dependent Claim
90 words
A pyloroplasty/pylorectomy shield for a circular stapler comprising: a base member having a proximal end and a distal end said proximal end having an arcuate outer periphery; anvil means mounted to the proximal end of said member interior to said arcuate outer periphery; attachment means mounted to the proximal end of said member for engagement with a circular stapler; a shield member extending axially from a section of the arcuate outer periphery of the proximal end of said member; and dilation means extending from the distal end of said member.
Claim 3
Dependent Claim
21 words
The pyloroplasty/pylorectomy shield of claim 1, wherein the dilation means comprise a tapered, substantially ellipsoid member extending from the base member.
Claim 4
Dependent Claim
17 words
The pyloroplasty/pylorectomy shield of claim 1, wherein the dilation means comprise a member having a conical shape.
Claim 5
Dependent Claim
14 words
The shield of claim 1 wherein the dilation means further comprises external screw threads.
Claim 6
Dependent Claim
15 words
The pyloroplasty/pylorectomy shield of claim 1, wherein the pyloroplasty/pylorectomy shield member comprises an arcuate member.
Claim 7
Dependent Claim
20 words
The shield member of claim 5 comprising an outer radius equal to a maximum outer radius of the base member.
Claim 8
Dependent Claim
97 words
A combination of a pyloroplasty/pylorectomy shield and a circular stapler, the pyloroplasty/pylorectomy shield comprising; a base member having a proximal end and a distal end said proximal end having an arcuate outer periphery; anvil means mounted to the proximal end of said base member interior to said arcuate outer periphery; attachment means mounted to said proximal end of said base member for engagement with a circular stapler; a shield member extending axially from a section of the arcuate outer periphery proximal end of said base member; and dilation means extending from the distal end of base member.
Claim 9
Dependent Claim
97 words
A combination of a pyloroplasty/pylorectomy shield and a circular stapler, the pyloroplasty/pylorectomy shield comprising; a base member having a proximal end and a distal end said proximal end having an arcuate outer periphery; anvil means mounted to the proximal end of said base member interior to said arcuate outer periphery; attachment means mounted to said proximal end of said base member for engagement with a circular stapler; a shield member extending axially from a section of the arcuate outer periphery proximal end of said base member; and dilation means extending from the distal end of base member.
Claim 10
Dependent Claim
20 words
The combination of claim 7, wherein the dilation means comprises a tapered, substantially ellipsoid member extending from the base member.
Claim 11
Dependent Claim
17 words
The combination of claim 7, wherein the dilation means comprises a member having a substantially conical shape.
Claim 12
Dependent Claim
14 words
The combination of claim 7 wherein the dilation means further comprises external screw threads.
Claim 13
Dependent Claim
14 words
The combination of claim 7, wherein the pyloroplasty/pylorectomy shield member comprises an arcuate member.
Claim 14
Dependent Claim
20 words
The shield member of claim 11 comprising an outer radius equal to a maximum outer radius of the base member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-28 | 1999-02-27 | 1999-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-28 | 2003-02-27 | 2003-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-28 | 2007-02-27 | 2007-08-29 | $7700.00 | Window Closed / Lapsed |