Patent US5489298A successfully refreshed from Google Patents.
US5489298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid assembly concentric mating stent, tissue heart valve with enhanced clamping and tissue exposure
Assignee: PFG AUTOGENICS INVESTMENTS LLC
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Filing: 1995-03-07
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Granted: 1996-02-06
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Expires: 2015-03-07
Abstract
Abstract A concentric mating stent tissue heart valve which is capable of being assembled with a variety of tissue sources is provided. The valve comprises at least one piece of tissue clamped between an inner and an outer stent. The outer stent is configured with a plurality of spaced posts extending from a base, wherein the posts are configured with open windows so that at least a portion of the tissue in the assembled valve is exposed through the windows. Several embodiments of the outer stent are disclosed, including where the outer stent comprises a crimped metal wire frame covered with a Dacron tube.
Inventors
- 👤 Charles S. Love
- 👤 Jack W. Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2472; A61F2/2412; A61F2/2415; Y; Y10; Y10S; Y10S623/00; Y10S623/90
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 2
Dependent Claim
123 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 3
Dependent Claim
38 words
The valve of claim 1 wherein said second stent crimped metal wire frame is crimped at said plurality of locations in a direction perpendicular to said tangent plane at said points on said periphery of said second stent.
Claim 4
Independent Claim
113 words
A method of assembling a heart valve comprising: providing a first stent and a second stent, said second stent having a periphery and a tangent plane associated with every point along said periphery; configuring said second stent to be a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby configuring said second stent with a plurality of pressure-inducing fixation points; situating at least one piece of tissue between said first and second stents; orienting said pressure inducing points of said one stent to induce pressure on said tissue; and inducing the first and second stents to clamp said piece of tissue between said stents.
Claim 5
Independent Claim
113 words
A method of assembling a heart valve comprising: providing a first stent and a second stent, said second stent having a periphery and a tangent plane associated with every point along said periphery; configuring said second stent to be a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby configuring said second stent with a plurality of pressure-inducing fixation points; situating at least one piece of tissue between said first and second stents; orienting said pressure inducing points of said one stent to induce pressure on said tissue; and inducing the first and second stents to clamp said piece of tissue between said stents.
Claim 6
Dependent Claim
190 words
A heart valve comprising: a first stent and a second stent; at least one piece of tissue situated between said first and second stents; wherein each of said first and second stents has a base with a plurality of spaced posts extending therefrom along an axis of the valve, with the posts of one of said stents adapted to be capable of extending at least partly into corresponding indentations in the posts of the other stent, but which are prevented from doing so completely by said tissue situated between said stents, such that at least a portion of said tissue is clamped by and between said posts; and a metal clip emplaced in said second stent, said metal clip having flanges on one end and an ear portion on the other end, said flanges bent upward to lock said ear portion into place when said valve is assembled, said clip thereby providing a permanent, reliable and controllable clamping force on said second stent to thereby induce the first and second stents to further clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 7
Dependent Claim
190 words
A heart valve comprising: a first stent and a second stent; at least one piece of tissue situated between said first and second stents; wherein each of said first and second stents has a base with a plurality of spaced posts extending therefrom along an axis of the valve, with the posts of one of said stents adapted to be capable of extending at least partly into corresponding indentations in the posts of the other stent, but which are prevented from doing so completely by said tissue situated between said stents, such that at least a portion of said tissue is clamped by and between said posts; and a metal clip emplaced in said second stent, said metal clip having flanges on one end and an ear portion on the other end, said flanges bent upward to lock said ear portion into place when said valve is assembled, said clip thereby providing a permanent, reliable and controllable clamping force on said second stent to thereby induce the first and second stents to further clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 8
Dependent Claim
91 words
A heart valve comprising: a first stent and a second stent, wherein one of said stents comprises a cloth-covered beaded metal wire frame, said beaded frame providing a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 9
Dependent Claim
91 words
A heart valve comprising: a first stent and a second stent, wherein one of said stents comprises a cloth-covered beaded metal wire frame, said beaded frame providing a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 10
Dependent Claim
99 words
A heart valve comprising: a first stent and a second stent, wherein one of said stents comprises a cloth-covered coiled metal wire frame, said metal wire frame having a plurality of coils, said coils providing a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 11
Dependent Claim
99 words
A heart valve comprising: a first stent and a second stent, wherein one of said stents comprises a cloth-covered coiled metal wire frame, said metal wire frame having a plurality of coils, said coils providing a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 12
Dependent Claim
133 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations in a direction perpendicular to said tangent plane at said points on said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stems to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 13
Dependent Claim
133 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations in a direction perpendicular to said tangent plane at said points on said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stems to clamp said piece of tissue between said stents and securely hold it in place between said stents.
Claim 14
Dependent Claim
128 words
A heart valve comprising: a first stent having a continuous periphery and a second stent having a continuous periphery, said second stent having a tangent plane associated with every point along said periphery of said second stent, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stent, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it between said stents.
Claim 15
Dependent Claim
128 words
A heart valve comprising: a first stent having a continuous periphery and a second stent having a continuous periphery, said second stent having a tangent plane associated with every point along said periphery of said second stent, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stent, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it between said stents.
Claim 16
Dependent Claim
133 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents, wherein said tensioning means lies substantially in a common plane.
Claim 17
Dependent Claim
133 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents and securely hold it in place between said stents, wherein said tensioning means lies substantially in a common plane.
Claim 18
Dependent Claim
124 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped radially inwardly at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents mid securely hold it in place between said stents.
Claim 19
Dependent Claim
124 words
A heart valve comprising: a first stent and a second stent, said second stent having a continuous periphery and a tangent plane associated with every point along said periphery, wherein said second stent comprises a cloth-covered metal wire frame crimped radially inwardly at a plurality of locations along said periphery of said second stent, thereby providing said second stent with a plurality of pressure-inducing fixation points; at least one piece of tissue situated between said first and second stents, said pressure-inducing fixation points of said one stent being oriented to induce pressure on said tissue; and tensioning means adapted to induce the first and second stents to clamp said piece of tissue between said stents mid securely hold it in place between said stents.
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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) | 1999-02-05 | 1999-08-07 | 2000-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-05 | 2003-08-07 | 2004-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-05 | 2007-08-07 | 2008-02-06 | $7700.00 | Window Closed / Lapsed |