US5114408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal hemostasis valve having improved sealing characteristics
Assignee: St Jude Medical Atrial Fibrillation Division Inc
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Filing: 1990-10-18
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Granted: 1992-05-19
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Expires: 2010-10-18
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 provided 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 slit concave exit base.
Inventors
- 👤 John J. Fleischhaker
- 👤 Tim T. Hidani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0653; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
102 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with a 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 second opening; and (c) a one-piece seal means stationarily located within said central chamber and having an entry face containing a conical receiving area tapered into a pilot opening wherein said entry face is in contact with a slit concave exit face.
Claim 2
Dependent Claim
102 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with a 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 second opening; and (c) a one-piece seal means stationarily located within said central chamber and having an entry face containing a conical receiving area tapered into a pilot opening wherein said entry face is in contact with a slit concave exit face.
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
26 words
The hemostasis cannula unit of claim 1 wherein the edges of the slit concave exit face are in contact with the walls of the valve housing.
Claim 5
Dependent Claim
22 words
The hemostasis cannula unit of claim 1 wherein the seal means is provided with a waist area adjacent to the pilot opening.
Claim 6
Dependent Claim
13 words
The hemostasis cannula unit of claim 1 in combination with a sheath means.
Claim 7
Dependent Claim
17 words
The hemostasis cannula unit of claim 5 wherein the sheath means is tapered at the distal end.
Claim 8
Dependent Claim
16 words
The hemostasis cannula unit of claim 1 wherein the slit in the exit face is Y-shaped.
Claim 9
Dependent Claim
20 words
The hemostasis cannula unit of claim 1 wherein the slit in the exit face is aligned with the pilot opening.
Claim 10
Dependent Claim
58 words
A one-piece hemostasis valve seal means for location within the passage of a hemostasis valve housing comprising an entry face containing a receiving area leading to a pilot opening wherein said entry face is in contact with a slit concave exit face wherein the slit is maintained in a closed position in the presence of arterial blood pressure.
Claim 11
Dependent Claim
58 words
A one-piece hemostasis valve seal means for location within the passage of a hemostasis valve housing comprising an entry face containing a receiving area leading to a pilot opening wherein said entry face is in contact with a slit concave exit face wherein the slit is maintained in a closed position in the presence of arterial blood pressure.
Claim 12
Dependent Claim
22 words
The valve seal means of claim 9 wherein said seal means is provided with a waist area adjacent to the pilot opening.
Claim 13
Dependent Claim
11 words
The seal means of claim 9 wherein the slit is Y-shaped.
Claim 14
Dependent Claim
19 words
The seal means of claim 9 wherein the slit in the exit face is aligned with the pilot opening.
Claim 15
Dependent Claim
116 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with a 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 second opening; and (c) a one-piece seal means stationarily located within said central chamber and having an entry face containing a conical receiving are tapered into a pilot opening which communicates with a slit concave exit face wherein the edges of the slit concave exit face are in contact with the walls of the valve housing.
Claim 16
Dependent Claim
116 words
A hemostasis cannula unit comprising: (a) a longitudinally extended valve housing having a first opening and a central longitudinal chamber communicating with a 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 second opening; and (c) a one-piece seal means stationarily located within said central chamber and having an entry face containing a conical receiving are tapered into a pilot opening which communicates with a slit concave exit face wherein the edges of the slit concave exit face are in contact with the walls of the valve housing.
Claim 17
Dependent Claim
22 words
The hemostasis cannula unit of claim 13 wherein the seal means is provided with a waist area adjacent to the pilot opening.
Claim 18
Dependent Claim
13 words
The hemostasis cannula unit of claim 13 in combination with a sheath means.
Claim 19
Dependent Claim
17 words
The hemostasis cannula unit of claim 15 wherein the sheath means is tapered at the distal end.
Claim 20
Dependent Claim
16 words
The hemostasis cannula unit of claim 13 wherein the slit in the exit face is Y-shaped.
Claim 21
Dependent Claim
20 words
The hemostasis cannula unit of claim 13 wherein the slit in the exit face is aligned with the pilot opening.
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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |