Patent US3582749A successfully refreshed from Google Patents.
Patent US4946133A successfully refreshed from Google Patents.
US4946133A
Expired / Lapsed
US
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Hemostasis valve
Assignee: Boston Scientific Scimed Inc
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Filing: 1988-11-21
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Granted: 1990-08-07
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Expires: 2008-11-21
Abstract
Abstract The hemostasis valve gasket for use in an introducer which is integrally formed from an elastomeric material so as to exhibit resiliency and which is designed to close about small diameter objects such as a guide wire and about larger diameter objects such as a working catheter or guide catheter to prevent air or blood leakage. The gasket includes a cylindrical base with a central bore therethrough and a hollow convex domed shaped member projecting therefrom. The hollow dome shaped member terminates in a concave section. The concave section of the dome shaped member has at least one arcuate slit formed in the external surface which extends inwardly toward the hollow chamber to form a central, self-sealing passage aligned with the central bore of the cylindrical base member.
Inventors
- 👤 Wade M. Johnson
- 👤 Edward A. Barlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/0646; A61M2039/0653; A61M2039/0686; Y; Y10; Y10S; Y10S604/00; Y10S604/905; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A hemostasis valve gasket comprising: (a) a cylindrical base formed from a resilient material and having a central passage therethrough; (b) a dome-shaped member projecting outwardly from said base, said dome-shaped member having an internal hollow chamber in communication with said central passage of the cylindrical base; and (c) at least one arcuate slit formed in the external surface of said dome-shaped member and extending inwardly toward said hollow chamber to meet along a common tangent for forming a central, self-sealing passage between said internal chamber and said slit so that an implement can be passed through the central passage of the base, through the internal chamber and out through said self-sealing passage with said cylindrical base and said dome-shaped member forming a seal around said implement when it is present and to allow closure of the self-sealing passage when no implement is present.
Claim 2
Dependent Claim
144 words
A hemostasis valve gasket comprising: (a) a cylindrical base formed from a resilient material and having a central passage therethrough; (b) a dome-shaped member projecting outwardly from said base, said dome-shaped member having an internal hollow chamber in communication with said central passage of the cylindrical base; and (c) at least one arcuate slit formed in the external surface of said dome-shaped member and extending inwardly toward said hollow chamber to meet along a common tangent for forming a central, self-sealing passage between said internal chamber and said slit so that an implement can be passed through the central passage of the base, through the internal chamber and out through said self-sealing passage with said cylindrical base and said dome-shaped member forming a seal around said implement when it is present and to allow closure of the self-sealing passage when no implement is present.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 having a pair of accurate slits which intersect at right angles and are formed in the external surface of said dome shaped member.
Claim 4
Dependent Claim
12 words
The apparatus of claim 1 wherein said resilient material is natural rubber.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1 wherein said resilient material is silicone rubber.
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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |