US4605408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial cardiac valve with active opening
Assignee: Université Pierre et Marie Curie
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Filing: 1984-03-29
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Granted: 1986-08-12
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Expires: 2004-03-29
Abstract
Abstract The present invention relates to a cardiac valve comprising a seat and at least one mobile element ensuring opening and closure of the valve, characterized in that said seat and/or said mobile element comprises at least one device, known per se, which ensures controlled opening of said valve when the blood pressure is balanced on both sides of said mobile element.
Inventors
- 👤 Alain Carpentier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; A61F2210/00; A61F2210/009
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof.
Claim 2
Dependent Claim
136 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof.
Claim 3
Dependent Claim
176 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof including a pair of magnets, with one magnet being carried by the check unit and the other magnet being carried by the fixed seat, wherein the magnets are disposed with the poles of the same polarity facing opposite each other.
Claim 4
Dependent Claim
176 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof including a pair of magnets, with one magnet being carried by the check unit and the other magnet being carried by the fixed seat, wherein the magnets are disposed with the poles of the same polarity facing opposite each other.
Claim 5
Dependent Claim
150 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof including a spring carried by the fixed seat for engagement by the check unit.
Claim 6
Dependent Claim
150 words
A cardiac valve comprising a fixed seat having a passage for blood flow therethrough including a circular ring comprising suture means and a swell, a mobile check unit for opening and closing the passage including two substantially semi-circular check valves, each check valve including two swells and whose edges rest on the swell on said ring when the valve is closed, said check valves effecting in their displacements a movement of translation and a movement of rotation, wherein the axes of rotation of each valve are constituted by two protuberances each fixed on the ring and together forming a common axis, said protuberances cooperating with grooves made in the two swells of each check valve, and means for maintaining the check unit in a controlled opened position when blood pressure is balanced on both sides thereof including a spring carried by the fixed seat for engagement by the check unit.
Claim 7
Dependent Claim
32 words
The valve of claim 1, 2 or 3 wherein the ring comprises on its inner face two stop rails which control the displacement of the check valves in translation and in rotation.
References Cited (Backward Citations)
US3039481A
Cited
US3370305A
Cited
US3859668A
Cited
US3974854A
Cited
US4159543A
Cited
US4417360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |