Patent US3959827A successfully refreshed from Google Patents.
US3959827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart valve prosthesis
Assignee: Individual
•
Filing: 1974-07-30
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Granted: 1976-06-01
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Expires: 1994-07-30
Abstract
Abstract A heart valve having a base with a passage and a free-floating pivoting disc for controlling the flow of blood through the passage. Inwardly directed proximal and distal pivots control the pivoting movement of the disc. The pivots are offset from the 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 held 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. In one form of the valve a permanent magnet in the disc assists the closing of the disc in response to a drop in the pressure of blood moving through the valve passage. 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
- 👤 Robert L. Kaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2409; A61F2/2403; A61F2/2406; F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7901; Y10T137/7903
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
253 words
A heart valve prosthesis for controlling the flow of blood in a heart comprising: a base having an inner annular wall surrounding a passage for carrying blood through the base; disc means movable relative to said passage to an open position to allow flow of blood through said passage in one 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 hole through the central portion thereof and an annular uninterrupted outer peripheral edge cooperating with the base to restrict the flow of blood in the opposite direction through said passage when the disc means is in the closed position, 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 extended through the hole in the disc means, and means within the disc means cooperating with the means for holding the disc means for progressively moving the disc means from the open position to the closed position in response to a reduction of the pressure of blood moving through said passage.
Claim 2
Dependent Claim
253 words
A heart valve prosthesis for controlling the flow of blood in a heart comprising: a base having an inner annular wall surrounding a passage for carrying blood through the base; disc means movable relative to said passage to an open position to allow flow of blood through said passage in one 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 hole through the central portion thereof and an annular uninterrupted outer peripheral edge cooperating with the base to restrict the flow of blood in the opposite direction through said passage when the disc means is in the closed position, 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 extended through the hole in the disc means, and means within the disc means cooperating with the means for holding the disc means for progressively moving the disc means from the open position to the closed position in response to a reduction of the pressure of blood moving through said passage.
Claim 3
Dependent Claim
50 words
The heart valve of claim 1 wherein: said means for holding the disc means includes pivot means on the base off-set from a diameter of the passage and engageable with the disc means for controlling the pivotal movement of the disc means off-center from a diameter of the disc means.
Claim 4
Dependent Claim
28 words
The heart valve of claim 1 wherein: said rod is secured to an in-flow portion of the base, said section projected in the downstream direction into the passage.
Claim 5
Dependent Claim
46 words
The heart valve of claim 1 wherein: said rod is secured to an in-flow 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 downstream direction into the passage.
Claim 6
Dependent Claim
50 words
The heart valve of claim 4 wherein: said means for holding the disc means includes pivot means on the base offset from a diameter of the passage and engageable with the disc means for controlling the pivotal movement of the disc means off-center from a diameter of the disc means.
Claim 7
Dependent Claim
28 words
The heart valve of claim 1 wherein: said rod is secured to an out-flow portion of the base, said section projected in the upstream 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 retaining 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
35 words
The heart valve of claim 1 wherein: the section of the rod has a cross sectional size smaller than the size of the hole in the disc means whereby blood can flow through said hole.
Claim 13
Dependent Claim
17 words
The heart valve of claim 1 wherein: said disc means has an outer skin of pyrolite carbon.
Claim 14
Dependent Claim
19 words
The heart valve of claim 2 wherein: said base means and pivot means have outer skins of pyrolite carbon.
Claim 15
Dependent Claim
47 words
The heart valve of claim 1 wherein: the means for moving the disc means includes magnet means located within the disc means, said magnet means cooperating with the means for holding the disc means to move the disc means from the open position to the closed position.
Claim 16
Dependent Claim
19 words
The heart valve of claim 14 wherein: the magnet means includes an annular permanent magnet located around said hole.
Claim 17
Dependent Claim
29 words
The heart valve of claim 15 wherein: the section of the rod has an enlarged portion adjacent the disc means when the disc means is in the closed position.
Claim 18
Dependent Claim
137 words
A heart valve prosthesis for controlling the flow of blood in a heart comprising: a base having a passage for carrying blood through the base and means for accommodating a suturing member used to secure the heart valve to heart tissue, valving means movable relative to the base to an open position to allow blood to flow through the passage in one direction and to a closed position to restrict the flow of blood in the opposite direction through the passage, means for holding the valving means in movable assembled relation with the base, and means associated with the valving means and means for holding the valving means for progressively moving the valving means from the open position to the closed position in response to a reduction of the pressure of the blood moving through said passage.
Claim 19
Dependent Claim
137 words
A heart valve prosthesis for controlling the flow of blood in a heart comprising: a base having a passage for carrying blood through the base and means for accommodating a suturing member used to secure the heart valve to heart tissue, valving means movable relative to the base to an open position to allow blood to flow through the passage in one direction and to a closed position to restrict the flow of blood in the opposite direction through the passage, means for holding the valving means in movable assembled relation with the base, and means associated with the valving means and means for holding the valving means for progressively moving the valving means from the open position to the closed position in response to a reduction of the pressure of the blood moving through said passage.
Claim 20
Dependent Claim
22 words
The heart valve of claim 17 wherein: the means for moving the valving means includes magnet means associated with the valving means.
Claim 21
Dependent Claim
34 words
The heart valve of claim 17 wherein: the valving means is a disc having a center hole, said means for holding the valving means including a rod having a section extended through the hole.
Claim 22
Dependent Claim
45 words
The heart valve of claim 19 wherein: the means for moving the valving means includes magnet means located in the disc adjacent and around the hole, said magnet means cooperating with the rod for moving the disc from the open position to the closed position.
Claim 23
Dependent Claim
14 words
The heart valve of claim 20 wherein: the magnet means is a permanent magnet.
Claim 24
Dependent Claim
27 words
The heart valve of claim 20 wherein: the disc has a substrate and an outer skin covering the substrate, said magnet means being located under said skin.
Claim 25
Dependent Claim
29 words
The heart valve of claim 19 wherein: the section of said rod has an enlarged portion located in said hole when the disc means is in the closed position.
Claim 26
Dependent Claim
28 words
The heart valve of claim 19 wherein: said rod is secured to the in-flow side of the base, said section projected in the downstream direction into the passage.
Claim 27
Dependent Claim
15 words
The heart valve of claim 24 wherein: said rod has a generally reverse curve shape.
Claim 28
Dependent Claim
13 words
The heart valve of claim 17 wherein: the valving means is a disc.
Claim 29
Dependent Claim
41 words
The heart valve of claim 26 wherein: the means for holding the valving means includes pivot means on the base offset from the diameter of the passage and engageable with the disc means for controlling the movement of the valving means.
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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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |