US3601151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreturn valves for medical uses
Assignee: Latex Products Pty Ltd
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Filing: 1968-01-08
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Granted: 1971-08-24
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Expires: 1988-01-08
Abstract
Abstract A medical valve used with arrangements to pass fluids into and from the body. The valve member is constituted by a chamber into which a stem portion protrudes, the stem portion being provided with a bore which passes fluid into the chamber and through the valve. The stem acts as a seat for the valve closure member which is an elasticlike sock which opens by expansion under pressure exerted from the stem side of the valve. The valve is closed when the pressure is removed and the sock contracts under its own elasticity around the stem. The valve can also be operated by causing a needle to pierce the sock member, the sock material is of a nature that it is self-sealing when the needle is removed.
Inventors
- 👤 Ronald Winnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:48
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; A; A61; A61M; A61M39/00; A61M39/22; A61M39/24; A61M5/00; A61M5/178; A61M5/31; A61M2005/3128; A61M5/32; A61M2005/3201; A61M2039/242; A61M2039/2433; A61M2039/2446; A61M2039/2453; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A medical valve for use with a syringe comprising a body including a bore and a chamber communicating with said bore and having a base defined by a wall, a stem located in said chamber and having a tip with a bore therein and being spaced from said chamber wall, said stem also including a connecting cup remote from said tip and communicating with said stem bore for anchoring said valve to a medical appliance, and a sock which is made of a material which acts to seal itself when punctured by a needle and which is slidingly received over said stem in covering relation to said tip for movement toward said chamber wall in response to pressure applied through said stem bore and for movement into sealing engagement with said stem to close said stem bore in response to pressure applied through said body bore, said sliding movement of said sock being limited by engagement with said chamber wall and with said tip, said sock also having sidewalls yielding under pressure applied through said stem bore to permit fluid to pass from said stem into said chamber and through said body bore.
Claim 2
Dependent Claim
193 words
A medical valve for use with a syringe comprising a body including a bore and a chamber communicating with said bore and having a base defined by a wall, a stem located in said chamber and having a tip with a bore therein and being spaced from said chamber wall, said stem also including a connecting cup remote from said tip and communicating with said stem bore for anchoring said valve to a medical appliance, and a sock which is made of a material which acts to seal itself when punctured by a needle and which is slidingly received over said stem in covering relation to said tip for movement toward said chamber wall in response to pressure applied through said stem bore and for movement into sealing engagement with said stem to close said stem bore in response to pressure applied through said body bore, said sliding movement of said sock being limited by engagement with said chamber wall and with said tip, said sock also having sidewalls yielding under pressure applied through said stem bore to permit fluid to pass from said stem into said chamber and through said body bore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |