US3701352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abdominal wall punch
Assignee: Individual
•
Filing: 1970-12-01
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Granted: 1972-10-31
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Expires: 1990-12-01
Abstract
Abstract A surgical instrument to cut a clean defect in an abdominal wall needed for ileostomies and colostomies. The instrument has an ''''L'''' shaped body with a lower arm which is inserted through an incision and a circular cutter supported from an upper arm is pushed and turned through the tissue layers above the lower arm.
Inventors
- 👤 Nathaniel L Bosworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/32053; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5623; Y10T408/56245; Y10T83/00; Y10T83/384; Y10T83/395
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
156 words
A surgical instrument for cutting a circular opening through an abdominal wall comprising: a base having an upstanding arm and a lower arm adapted to be inserted in a surgical incision in an abdominal wall to underlie and support said wall; an upper arm mounted on said upstanding arm for movement toward and away from said lower arm, said lower arm having a seatforming means on its side facing the upper arm; an elongated surgical punch assembly with means mounting it on said upper arm, said punch having a cylindrical cutter body presenting a cutting edge facing towards and aligned with said seat-forming means; said means mounting said punch assembly on said upper arm providing for sliding and rotary movement to seat said cutting edge against said seat-forming means so that an abdominal wall portion between said upper and lower arms is penetrated by said cutting edge to form a circular opening through said abdominal wall.
Claim 2
Dependent Claim
156 words
A surgical instrument for cutting a circular opening through an abdominal wall comprising: a base having an upstanding arm and a lower arm adapted to be inserted in a surgical incision in an abdominal wall to underlie and support said wall; an upper arm mounted on said upstanding arm for movement toward and away from said lower arm, said lower arm having a seatforming means on its side facing the upper arm; an elongated surgical punch assembly with means mounting it on said upper arm, said punch having a cylindrical cutter body presenting a cutting edge facing towards and aligned with said seat-forming means; said means mounting said punch assembly on said upper arm providing for sliding and rotary movement to seat said cutting edge against said seat-forming means so that an abdominal wall portion between said upper and lower arms is penetrated by said cutting edge to form a circular opening through said abdominal wall.
Claim 3
Dependent Claim
64 words
The instrument of claim 1 including a guide means positioned above said lower arm in alignment with said seat-forming means and said punch assembly so that when said lower arm is inserted through an incision the guide means is positioned on the skin above and outside the seat-forming means for visually locating the site of the circular opening and holding the skin in position.
Claim 4
Dependent Claim
15 words
The instrument of claim 2 wherein the guide means is supported from said upper arm.
Claim 5
Dependent Claim
15 words
The instrument of claim 2 in which the guide means is a flat annular plate.
Claim 6
Dependent Claim
54 words
The instrument of claim 2 in which said means mounting said punch assembly is a column mounted for movement parallel to said upstanding arm with said guiding means mounted at the lower end of the column and a vertically extending sleeve at the upper end of the column to slideably receive the punch assembly.
Claim 7
Dependent Claim
22 words
The instrument of claim 5 including stop means on the vertically extending sleeve to hold said punch assembly in a predetermined position.
Claim 8
Dependent Claim
25 words
The instrument of claim 1 wherein said cylindrical cutter body has an opening along one side thereof to facilitate removal of the cut tissue core.
Claim 9
Dependent Claim
16 words
The instrument of claim 1 including a resilient material as the surface of said seat-forming means.
Claim 10
Dependent Claim
24 words
The instrument of claim 1 in which the seat-forming means is a depression in said lower arm with a resilient material in said depression.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |