Patent US4909798A successfully refreshed from Google Patents.
US4909798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal hemostasis cannula
Assignee: St Jude Medical Atrial Fibrillation Division Inc
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Filing: 1987-11-12
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Granted: 1990-03-20
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Expires: 2007-11-12
Abstract
Abstract Disclosed herein is a hemostasis valve which is formed of a longitudinally extended valve housing having a first opening and a central longitudinal passage communicating with an opposite second opening. A cap means is providied for enclosing the first opening of the housing, said cap means having a hole to permit insertion of a catheter. Also provided is a one-piece seal means located within the longitudinally extended housing, said seal means comprising a sealing neck having a relatively small opening therein and communicating with a sealing chamber having opposing sealing exit lips which are both readily expandable to a diameter less than that of the valve housing upon insertion of a catheter.
Inventors
- 👤 John J. Fleischhacker
- 👤 Gregg S. Sutton
- 👤 Mark D. Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0646; A61M2039/0653; A61M2039/0686; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with an opposite second opening; (b) a cap means enclosing the first opening of the valve housing and providing a hole to permit the insertion of a catheter into the housing's first opening through the central chamber and out the opposite second opening; and (c) a one-piece seal means stationarily located within said central chamber and having a conical receiving area tapered into a sealing neck communicating with said hole in said cap means and further communicating with a chamber having sealing exit lips wherein said chamber, upon insertion of a catheter, has a diameter of less than the internal diameter of the valve housing and said sealing exit lips are formed of at least a pair of opposing normally closed lips.
Claim 2
Dependent Claim
143 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with an opposite second opening; (b) a cap means enclosing the first opening of the valve housing and providing a hole to permit the insertion of a catheter into the housing's first opening through the central chamber and out the opposite second opening; and (c) a one-piece seal means stationarily located within said central chamber and having a conical receiving area tapered into a sealing neck communicating with said hole in said cap means and further communicating with a chamber having sealing exit lips wherein said chamber, upon insertion of a catheter, has a diameter of less than the internal diameter of the valve housing and said sealing exit lips are formed of at least a pair of opposing normally closed lips.
Claim 3
Dependent Claim
21 words
The hemostasis cannula unit of claim 1 wherein the valve housing includes an exit port providing access to the central chamber.
Claim 4
Dependent Claim
40 words
The hemostasis cannula unit of claim 1 wherein the sealing lips are formed from a slit in a flattened section of a semi-spherical valve sealing chamber, said slit being generally perpendicular to the axis of the longitudinally extended valve housing.
Claim 5
Dependent Claim
16 words
The hemostasis cannula unit of claim 1 wherein the sealing neck is adjacent the cap means.
Claim 6
Dependent Claim
37 words
The hemostasis cannula of claim 1 wherein the sealing neck is provided with a waist which mirrors the internal shape of the sealing neck so that a relatively constant wall thickness is maintained int he sealing area.
Claim 7
Dependent Claim
13 words
The hemostasis cannula unit of claim 1 in combination with a sheath means.
Claim 8
Dependent Claim
17 words
The hemostasis cannula unit of claim 6 wherein the sheath means is tapered at the distal end.
Claim 9
Dependent Claim
73 words
A one-piece hemostasis valve seal means for location within the central passage of a hemostasis valve housing comprising sealing neck and sealing exit lips wherein the sealing neck is readily expandable upon insertion of a catheter to a diameter less than the internal diameter of the valve housing and wherein the sealing exit lips are formed of at least a pair of opposing, normally closed lips through which a catheter may be inserted.
Claim 10
Dependent Claim
73 words
A one-piece hemostasis valve seal means for location within the central passage of a hemostasis valve housing comprising sealing neck and sealing exit lips wherein the sealing neck is readily expandable upon insertion of a catheter to a diameter less than the internal diameter of the valve housing and wherein the sealing exit lips are formed of at least a pair of opposing, normally closed lips through which a catheter may be inserted.
References Cited (Backward Citations)
US3308798A
Cited
US3621876A
Cited
US4000739A
Cited
DE3042229A1
Cited
US4424833A
Cited
US4655752A
Cited
US4649904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |