Patent US5183053A successfully refreshed from Google Patents.
US5183053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elliptical biopsy punch
Assignee: Acuderm Inc
•
Filing: 1991-04-12
•
Granted: 1993-02-02
•
Expires: 2011-04-12
Abstract
Abstract The disposable punch of the present invention is of a simple two-piece construction where the first piece is a molded plastic handle portion having an elongated shape designed to be grasped by the surgeon. The handle portion terminates in a receptacle which receives the blade of the biopsy punch. In cross-section, the blade has an elliptical shape and terminates in a cutting edge that lies in a single plate. The blade is force fit into the receptacle of the handle portion and is maintained in this position by a friction fit.
Inventors
- 👤 Charles R. Yeh
- 👤 Donald H. Huldin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/32053; A61B10/00; A61B10/02; A61B10/0233; A61B2017/00743; A61B2017/00747; A61B2017/00761
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A disposable surgical instrument in the form of a biopsy punch for making an elliptical incision in the skin to remove skin abnormalities, comprising: (a) an elongated handle member formed of a hard plastic material including a means for retaining a cutting member formed integrally on one end of said handle member; and (b) a cutting member retained by said retaining means and projecting therefrom to expose a cutting surface for making the incision, said cutting member having a first and second portion, said first portion being disposed within said retaining means and being substantially annular in cross-section and said second portion being generally elliptical in cross-section.
Claim 2
Dependent Claim
107 words
A disposable surgical instrument in the form of a biopsy punch for making an elliptical incision in the skin to remove skin abnormalities, comprising: (a) an elongated handle member formed of a hard plastic material including a means for retaining a cutting member formed integrally on one end of said handle member; and (b) a cutting member retained by said retaining means and projecting therefrom to expose a cutting surface for making the incision, said cutting member having a first and second portion, said first portion being disposed within said retaining means and being substantially annular in cross-section and said second portion being generally elliptical in cross-section.
Claim 3
Dependent Claim
20 words
The surgical instrument according to claim 1, wherein said cutting member extends a uniform distance from said means for retaining.
Claim 4
Dependent Claim
20 words
The surgical instrument according to claim 1, wherein said retaining means includes a receptacle dimensioned to receive said cutting member.
Claim 5
Dependent Claim
16 words
The surgical instrument according to claim 1, wherein said cutting member is composed of surgical steel.
Claim 6
Dependent Claim
25 words
The surgical instrument according to claim 1, wherein said first portion of the cutting member is force fit and frictionally retained within said retaining means.
Claim 7
Dependent Claim
23 words
The surgical instrument of claim 1, wherein said cutting surface is formed on the second portion and consists of a razor sharp blade.
Claim 8
Dependent Claim
22 words
The surgical instrument according to claim 1, wherein said elongated handle member is formed with a rim for receiving the punching force.
References Cited (Backward Citations)
US2690750A
Cited
US3512519A
Cited
US3577979A
Cited
US3990451A
Cited
US4007732A
Cited
US4099518A
Cited
US4059115A
Cited
US4649918A
Cited
DE3525917A1
Cited
US4832045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-02 | 1996-08-03 | 1997-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-02 | 2000-08-03 | 2001-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-02 | 2004-08-03 | 2005-02-02 | $7700.00 | Window Closed / Lapsed |