Patent US4233974A successfully refreshed from Google Patents.
US4233974A
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Spinal needle assembly
Assignee: Allegiance Corp
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Filing: 1978-09-05
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Granted: 1980-11-18
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Expires: 1998-09-05
Abstract
Abstract A spinal needle assembly in which means are provided for bridging the end cap of the obturator and the hub of the cannula to prevent relative axial movement between the obturator and cannula.
Inventors
- 👤 Vince Desecki
- 👤 Carl Filipowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3401; A61B2017/347
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A spinal needle assembly in which an obturator having an end cap extends into a cannula having a needle bevel at one end and a hub at the opposite end for engagement with said end cap, and means for aligning the obturator and the cannula, the improvement comprising means for bridging said end cap and hub to prevent relative axial movement between said obturator and cannula, said bridging means being adapted for rapid manual removal by an operator and comprising a molded overcap which overlies said end cap and extends over protruding portions of said end cap and hub.
Claim 2
Dependent Claim
99 words
A spinal needle assembly in which an obturator having an end cap extends into a cannula having a needle bevel at one end and a hub at the opposite end for engagement with said end cap, and means for aligning the obturator and the cannula, the improvement comprising means for bridging said end cap and hub to prevent relative axial movement between said obturator and cannula, said bridging means being adapted for rapid manual removal by an operator and comprising a molded overcap which overlies said end cap and extends over protruding portions of said end cap and hub.
Claim 3
Dependent Claim
90 words
An assembly as described in claim 1, said end cap having a lower rim and said hub having an upper rim with said cap overlying said hub so that said rims are adjacent each other, said bridging means comprising a unitary member having an upper portion and a spaced lower portion, said upper portion being adapted for location on said cap above said cap rim and said lower portion being adapted for location on said hub below said hub rim and means coupling said upper portion to said lower portion.
Claim 4
Dependent Claim
18 words
An assembly as described in claim 2, said bridging means being formed as a molded, integral, one-piece member.
Claim 5
Dependent Claim
26 words
An assembly as described in claim 2, said bridging means further comprising finger-engaging means for rapid removal of the unitary member from the cap and hub.
Claim 6
Dependent Claim
31 words
An assembly as described in claim 2, said bridging means being dimensioned so as to prevent its connection to the cap and hub unless the obturator and cannula are properly aligned.
References Cited (Backward Citations)
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US2559474A
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US2755801A
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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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |