Patent US2946095A successfully refreshed from Google Patents.
Patent US3825957A successfully refreshed from Google Patents.
US3825957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivoting disc heart valve with rod guide
Assignee: Individual
•
Filing: 1972-08-08
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Granted: 1974-07-30
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Expires: 1992-08-08
Abstract
Abstract A heart valve having a held pivoting disc for controlling the flow of blood. The disc is located within a passage in the base of the valve. Inwardly directed proximal and distal pivots control the pivoting movement of the disc. The pivots are offset from a diameter of the disc so that the disc pivots between its open and closed positions between its center and an outer peripheral edge of the disc. The disc is haeld in free-floating assembled relation with the pivots and base with a curved retaining rod having a curved end projected through a central hole in the disc. A suture collar surrounds and is mounted on the outer portions of the base. A low friction sleeve interposed between the base and the collar permits rotation of the valve relative to the suturing collar after the collar has been attached to the heart tissue.
Inventors
- 👤 R Kaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:50
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; A61F2/2406; A61F2/2409; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
367 words
A heart valve for controlling the flow of blood comprising: a base having a proximal portion and an inner annular wall surrounding a passage for carrying blood in the distal direction through the base; disc means movable to an open position to allow flow of blood through said passage in the distal direction and to a closed position to restrict the flow of blood in the opposite direction through said passage, said disc means being free to rotate about its central axis as the disc means moves between its open and closed positions, said disc means having a circular hole through the central portion thereof and an annular uninterrupted outer peripheral edge cooperating with the inner annular wall to restrict the flow of blood in the opposite direction through said passage when the disc means is in the closed position, pivot means on the base offset from a diameter of the passage, said pivot means having first means engageable with one side of the disc means during opening movement of the disc means and second means engageable with the other side of the disc means during closing movement of the disc means for controlling the pivotal movement of the disc means off-center from a diameter of the disc means, said first means and second means being spaced from each other a distance greater than the thickness of the disc means, and means for holding the disc means in movable assembled relation with the base whereby the disc means is free to rotate about its central axis and is located off-center when in the open position allowing centralized flow of blood through the passage and flow of blood on opposite sides of the disc means, said means for holding the disc means including a rod having a section projected into the passage and extended through the hole in the disc means, said rod being unobstructed between its ends and having a circular cross section and a diameter slightly smaller than the diameter of the hole to allow limited flow of blood through the hole and to permit rotation of the disc means about its central axis and limited lateral movement of the disc means relative to the rod.
Claim 2
Dependent Claim
367 words
A heart valve for controlling the flow of blood comprising: a base having a proximal portion and an inner annular wall surrounding a passage for carrying blood in the distal direction through the base; disc means movable to an open position to allow flow of blood through said passage in the distal direction and to a closed position to restrict the flow of blood in the opposite direction through said passage, said disc means being free to rotate about its central axis as the disc means moves between its open and closed positions, said disc means having a circular hole through the central portion thereof and an annular uninterrupted outer peripheral edge cooperating with the inner annular wall to restrict the flow of blood in the opposite direction through said passage when the disc means is in the closed position, pivot means on the base offset from a diameter of the passage, said pivot means having first means engageable with one side of the disc means during opening movement of the disc means and second means engageable with the other side of the disc means during closing movement of the disc means for controlling the pivotal movement of the disc means off-center from a diameter of the disc means, said first means and second means being spaced from each other a distance greater than the thickness of the disc means, and means for holding the disc means in movable assembled relation with the base whereby the disc means is free to rotate about its central axis and is located off-center when in the open position allowing centralized flow of blood through the passage and flow of blood on opposite sides of the disc means, said means for holding the disc means including a rod having a section projected into the passage and extended through the hole in the disc means, said rod being unobstructed between its ends and having a circular cross section and a diameter slightly smaller than the diameter of the hole to allow limited flow of blood through the hole and to permit rotation of the disc means about its central axis and limited lateral movement of the disc means relative to the rod.
Claim 3
Dependent Claim
53 words
The heart valve of claim 1 wherein: said first means includes a pair of spaced members located adjacent one side of the disc means and directed into the passage and the second means includes a pair of spaced members located adjacent the other side of the disc means and directed into the passage.
Claim 4
Dependent Claim
28 words
The heart valve of claim 1 wherein: said rod is secured to a proximal portion of the base, said section projected in the distal direction into the passage.
Claim 5
Dependent Claim
46 words
The heart valve of claim 1 wherein: said rod is secured to a proximal portion of the base and has a general reverse curve shape and extends in a general radial plane relative to the passage, said section projected in the distal direction into the passage.
Claim 6
Dependent Claim
53 words
The heart valve of claim 4 wherein: said first means includes a pair of spaced members located adjacent one side of the disc means and directed into the passage and the second means includes a pair of spaced members located adjacent the other side of the disc means and directed into the passage.
Claim 7
Dependent Claim
28 words
The heart valve of claim 1 wherein: said roD is secured to a distal portion of the base, said section projected in the proximal direction into the passage.
Claim 8
Dependent Claim
44 words
The heart valve of claim 1 wherein: said outer peripheral edge of said disc means is spaced from the inner wall of the base when the disc means is in the closed position whereby limited reverse flow of blood is permitted through said passage.
Claim 9
Dependent Claim
47 words
The heart valve of claim 1 wherein: said means for holding the disc means includes means cooperating with the disc means to hold the disc means in an inclined position relative to the transverse plane of the passage when the disc means is in the closed position.
Claim 10
Dependent Claim
66 words
The heart valve of claim 1 wherein: said holding means comprises a single rod having a base portion secured to the base and said section being a curved radially inwardly directed portion having an end projected through the hole in the disc means, said curved portion of said rod having a curvature that generally follows the pivotal path of the center hole in the disc means.
Claim 11
Dependent Claim
34 words
The heart valve of claim 9 including: means on the end of said rod to restrict reverse flow of blood through the hole in the disc when the disc is in the closed position.
Claim 12
Dependent Claim
17 words
The heart valve of claim 1 wherein: said disc means has an outer skin of Pyrolite carbon.
Claim 13
Dependent Claim
19 words
The heart valve of claim 1 wherein: said base means and pivot means have outer skins of Pyrolite carbon.
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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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |