US4163446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle and removable pad therefor
Assignee: Individual
•
Filing: 1978-01-31
•
Granted: 1979-08-07
•
Expires: 1998-01-31
Abstract
Abstract A pad for use in combination with a bone marrow biopsy needle which is adapted to be slipped over the proximal end of the needle to provide an enlarged surface for distributing the pressure across the palm of the user. The pad includes a generally disc-shaped palm engaging surface along with a needle enveloping sleeve for releasable attachment to the biopsy needle. A bore is formed through the wall of the sleeve to provide communication between the interior of the sleeve and the atmosphere, thereby avoiding transfer of air between the pad element and the lumen of the needle when the pad element is mounted on the needle.
Inventors
- 👤 Khosrow Jamshidi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
In combination, a biopsy needle having an elongated hollow body member with a distal cutting edge and a proximal gripping portion, and a radially extending finger gripping means near the proximal end thereof; and pad means removably mounted upon said hollow body member at the proximal end thereof; (a) said pad means comprising a generally disc-shaped element with first and second opposed major surfaces, said first surface being a palm engaging surface and with said second surface having a needle enveloping sleeve extending outwardly from the surface thereof; and (b) said needle enveloping sleeve having a radially extending bore formed through the wall thereof adjacent the juncture between said second pad surface and said sleeve for providing communication between the interior of said sleeve and atmosphere.
Claim 2
Dependent Claim
126 words
In combination, a biopsy needle having an elongated hollow body member with a distal cutting edge and a proximal gripping portion, and a radially extending finger gripping means near the proximal end thereof; and pad means removably mounted upon said hollow body member at the proximal end thereof; (a) said pad means comprising a generally disc-shaped element with first and second opposed major surfaces, said first surface being a palm engaging surface and with said second surface having a needle enveloping sleeve extending outwardly from the surface thereof; and (b) said needle enveloping sleeve having a radially extending bore formed through the wall thereof adjacent the juncture between said second pad surface and said sleeve for providing communication between the interior of said sleeve and atmosphere.
Claim 3
Dependent Claim
19 words
The combination as defined in claim 1 being particularly characterized in that said pad means is fabricated from polytetrafluoroethylene.
Claim 4
Dependent Claim
34 words
The combination as defined in claim 1 being particularly characterized in that said radially extending bore of said needle engaging sleeve is disposed along the juncture between said second pad surface and said sleeve.
References Cited (Backward Citations)
US843344A
Cited
SU137231A1
Cited
US3628524A
Cited
US3630192A
Cited
US3893205A
Cited
US3850158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |