US4832045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy instrument
Assignee: Individual
•
Filing: 1988-03-18
•
Granted: 1989-05-23
•
Expires: 2008-03-18
Abstract
Abstract A biopsy instrument for excising an elongated diamond-shaped tissue sample from a skin surface. The instrument has a handle with an elongated axis terminating at one end in a coaxially mounted diamond-shaped knife having a plurality of identical V-shaped cutters with downwardly sloping cutting blades. The cutters are contiguous to each other. The interior of the knife is recessed a predetermined distance inwardly of the V-shaped cutters. The inclined sharpened cutting blades cut in elongated diamond-shaped incision upon the application of axial pressure to the handle of the instrument. The remaining diamond-shaped lesions can then be easily sutured closed.
Inventors
- 👤 Robert E. Goldberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B17/00; A61B17/32; A61B17/3205; A61B17/32053; A61B17/322; A61B2017/00743; A61B2017/00747; A61B2017/00761
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
172 words
An instrument for cutting an elongated diamond-shaped lesion in the surface of the skin for permitting the removal of an elongated diamond-shaped biopsy sample comprising: a handle having an elongated axis terminating at one end in a flat, blade-receiving surface; a coaxially mounted diamond-shaped knife having two pairs of identically shaped cutters adjacently disposed on said blade-receiving surface, each cutter being V-shaped and having a pair of downwardly sloping cutting blades which intersect and are contiguous with the downwardly sloping cutting blades of the adjacent V-shaped cutter, the adjacent cutter of each pair intersecting at an obtuse angle, each pair of cutters joining the second pair of cutters at an acute angle to define a four cutter, eight bladed closed diamond-shaped knife, the interior of said knife defined as the area surrounded by said blades being recessed a predetermined distance inwardly of said V-shaped cutters, said downwardly sloping cutting blades of each of said cutters cutting an elongated diamond-shaped incision upon the application of axial pressure to the handle of said instrument.
Claim 2
Dependent Claim
172 words
An instrument for cutting an elongated diamond-shaped lesion in the surface of the skin for permitting the removal of an elongated diamond-shaped biopsy sample comprising: a handle having an elongated axis terminating at one end in a flat, blade-receiving surface; a coaxially mounted diamond-shaped knife having two pairs of identically shaped cutters adjacently disposed on said blade-receiving surface, each cutter being V-shaped and having a pair of downwardly sloping cutting blades which intersect and are contiguous with the downwardly sloping cutting blades of the adjacent V-shaped cutter, the adjacent cutter of each pair intersecting at an obtuse angle, each pair of cutters joining the second pair of cutters at an acute angle to define a four cutter, eight bladed closed diamond-shaped knife, the interior of said knife defined as the area surrounded by said blades being recessed a predetermined distance inwardly of said V-shaped cutters, said downwardly sloping cutting blades of each of said cutters cutting an elongated diamond-shaped incision upon the application of axial pressure to the handle of said instrument.
Claim 3
Dependent Claim
29 words
The instrument as recited in claim 1, wherein each of the downwardly sloping cutting blades intersects in a sharp transition area with the cutting edge of the adjacent cutter.
Claim 4
Dependent Claim
22 words
The instrument as recited in claim 2, wherein each of said cutting blades of said knife is bevelled to a sharp blade.
Claim 5
Dependent Claim
33 words
The instrument as recited in claim 2, wherein said flat blade-receiving surface is larger in diameter than the diamond-shaped knife to serve as a limiting surface to control the depth of the incision.
Claim 6
Dependent Claim
30 words
The instrument as recited in claim 4, wherein said flat blade-receiving surface is separated from said transition area by a distance equal to at least the thickness of the skin.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |