US5186178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crescent shaped biopsy punch
Assignee: Acuderm Inc
•
Filing: 1991-04-12
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Granted: 1993-02-16
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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 recptacle which receives the blade of the biopsy punch. In cross-section, the blade has a crescent shape and terminates in a cutting edge that lies in a single plane. 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 17:21
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
92 words
A disposable surgical instrument in the form of a biopsy punch for making an incision in the skin to remove skin abnormalities, comprising: (a) an elongated handle member formed of a rigid plastic material, said handle member including a means for retaining a cutting member on one end thereof; and (b) a cutting member retained by said means having a first and second portion, said first portion being disposed within said retaining means and said second portion projecting therefrom to expose a cutting surface having a crescent shape for making the incision.
Claim 2
Dependent Claim
92 words
A disposable surgical instrument in the form of a biopsy punch for making an incision in the skin to remove skin abnormalities, comprising: (a) an elongated handle member formed of a rigid plastic material, said handle member including a means for retaining a cutting member on one end thereof; and (b) a cutting member retained by said means having a first and second portion, said first portion being disposed within said retaining means and said second portion projecting therefrom to expose a cutting surface having a crescent shape for making the incision.
Claim 3
Dependent Claim
31 words
The surgical instrument according to claim 1, wherein said cutting member extends from said means for retaining a uniform distance such that incisions having a consistently uniform depth can be made.
Claim 4
Dependent Claim
19 words
The surgical instrument according to claim 1, wherein said 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
26 words
The surgical instrument according to claim 4, wherein said first portion of the cutting member is force fit and frictionally retained within said blade securing means.
Claim 7
Dependent Claim
23 words
The surgical instrument of claim 5, wherein said cutting surface is formed on the second portion and consists of a razor shape 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 transmitting the punching force.
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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) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |