US4757826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endocervical biopsy instrument
Assignee: Individual
•
Filing: 1986-11-20
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Granted: 1988-07-19
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Expires: 2006-11-20
Abstract
Abstract A biopsy instrument for the collection and extraction of endocervical tissue samples is disclosed. The instrument has a sample extraction head preferably ellipsoid or cylindrical in shape and of one-piece construction. The head contains one or more longitudinal blade portions integral with the surface of the head. Directly adjacent to each blade portion is a sample collection well. The well is of sufficient depth to permit the retention and removal of tissue specimens.
Inventors
- 👤 Gazi Abdulhay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:28
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0291; A61B10/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
A biopsy instrument for collecting tissue from the endocervical canal comprising a handle portion and a cutting head having a curved exterior surface, said head being circular in cross section and of a diameter greater than the diamater of said handle portion, said head comprising: at least two sample retaining wells interiorly disposed within said head, each well being open at said surface of said head and being defined by a first and second interior wall, said second wall being closer to the center of said head than said first wall, said walls being parallel to each other; each of said wells having a depth at least two-thirds the diameter of said head, whereby said depth enables samples to be retained and stored within said head during the rotational movements encountered in a biopsy procedure; said first wall of each well comprising a sharpened edge portion terminating at the surface of said head, whereby said sharpened edge portion functions as a tissue cutting blade.
Claim 2
Dependent Claim
164 words
A biopsy instrument for collecting tissue from the endocervical canal comprising a handle portion and a cutting head having a curved exterior surface, said head being circular in cross section and of a diameter greater than the diamater of said handle portion, said head comprising: at least two sample retaining wells interiorly disposed within said head, each well being open at said surface of said head and being defined by a first and second interior wall, said second wall being closer to the center of said head than said first wall, said walls being parallel to each other; each of said wells having a depth at least two-thirds the diameter of said head, whereby said depth enables samples to be retained and stored within said head during the rotational movements encountered in a biopsy procedure; said first wall of each well comprising a sharpened edge portion terminating at the surface of said head, whereby said sharpened edge portion functions as a tissue cutting blade.
Claim 3
Dependent Claim
32 words
The biopsy instrument of claim 1 wherein said head is comprised of plastic and said sharpened edge portion is being comprised of metal, said sharpened edge portion permanently affixed to said head.
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) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |