Patent US2529547A successfully refreshed from Google Patents.
Patent US3716838A successfully refreshed from Google Patents.
US3577979A
Expired / Lapsed
US
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Disposable surgical skin punch
Assignee: Individual
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Filing: 1968-02-06
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Granted: 1971-05-11
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Expires: 1988-02-06
Abstract
Abstract A disposable skin biopsy punch manufactured by forming a piece of sheet metal into a tubular member having a handle end and a cutting end. The cutting end terminates into an undulating cutting edge and includes means for retaining the skin plug within it and preferably having graduations or circumferential grooves for indicating the depth of cut or penetration. The skin punch is further provided with an axially extending scoop to allow observation of the cutting operation and may be produced with various size diameter cutting ends.
Inventors
- 👤 Harry Van Der Gaast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:58
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B17/00; A61B17/32; A61B17/3205; A61B17/32053; A61B17/322
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A one-piece surgical skin punch for removing a plug of a patient''s skin comprising: a piece of sheet metal rolled into a tubular member having a cutting end, a handle end, and axially extending edges; said axially extending edges lying adjacent to but separable from each other at said cutting end to allow said cutting end to flex outwardly upon application of pressure and inwardly upon release of such pressure; said cutting end terminating in an undulating cutting edge adapted to penetrate the skin cleanly, thereby providing cutting action under direct pressure and rotation and a plurality of circumferential grooves in the outer surface of said cutting end, said grooves giving an indication of the depth of penetration by determining the number of exposed grooves by touch.
Claim 2
Dependent Claim
127 words
A one-piece surgical skin punch for removing a plug of a patient''s skin comprising: a piece of sheet metal rolled into a tubular member having a cutting end, a handle end, and axially extending edges; said axially extending edges lying adjacent to but separable from each other at said cutting end to allow said cutting end to flex outwardly upon application of pressure and inwardly upon release of such pressure; said cutting end terminating in an undulating cutting edge adapted to penetrate the skin cleanly, thereby providing cutting action under direct pressure and rotation and a plurality of circumferential grooves in the outer surface of said cutting end, said grooves giving an indication of the depth of penetration by determining the number of exposed grooves by touch.
Claim 3
Dependent Claim
41 words
A surgical skin punch as claimed in claim 1 wherein said cutting end further includes prongs extending inwardly and in the same direction transverse to the axial length of the skin punch for retaining the skin plug within said cutting end.
Claim 4
Dependent Claim
34 words
A surgical skin punch as claimed in claim 1 further including a lateral scoop extending axially between said handle end and said cutting end for allowing observation of the operation of the skin punch.
Claim 5
Dependent Claim
41 words
A surgical skin punch as claimed in claim 1 wherein said undulating cutting edge is comprised of a plurality of flat cutting edges alternately disposed with a plurality of inclined cutting edges thereby providing cutting action under direct pressure and rotation.
Claim 6
Dependent Claim
37 words
A surgical skin punch as claimed in claim 1 wherein said cutting edge is sharpened on the internal side thereby aiding in the retention of the skin plug and operating with the flexing of said cutting end.
Claim 7
Dependent Claim
110 words
A surgical skin punch of one piece generally tubular construction comprising a cutting end and a handle end, said cutting end defining an undulating annular cutting edge comprised of a plurality of flat cutting edges alternatingly disposed with a plurality of inclined cutting edges, and with said cutting edges being sharpened on the internal sides thereof, including a plurality of prongs formed on said cutting end adjacent said undulating cutting edge with each prong extending inward and turned inward about the longitudinal axis of said cutting end, and including a plurality of circumferential grooves formed in the outer surface of said cutting end and arranged in axially spaced intervals thereof.
Claim 8
Dependent Claim
110 words
A surgical skin punch of one piece generally tubular construction comprising a cutting end and a handle end, said cutting end defining an undulating annular cutting edge comprised of a plurality of flat cutting edges alternatingly disposed with a plurality of inclined cutting edges, and with said cutting edges being sharpened on the internal sides thereof, including a plurality of prongs formed on said cutting end adjacent said undulating cutting edge with each prong extending inward and turned inward about the longitudinal axis of said cutting end, and including a plurality of circumferential grooves formed in the outer surface of said cutting end and arranged in axially spaced intervals thereof.
References Cited (Backward Citations)
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |