Patent US8092518B2 successfully refreshed from Google Patents.
US8092518B2
Active / In Force
US
⏱️ 1.5 years remaining
Methods of implanting two-part heart valves
Assignee: Edwards Lifesciences Corp
•
Filing: 2008-04-08
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Granted: 2012-01-10
•
Expires: 2028-04-08
Abstract
Abstract Expandable heart valves for minimally invasive valve replacement surgeries are disclosed. In a first embodiment, an expandable pre-assembled heart valve includes a plastically-expandable annular base having plurality of upstanding commissure posts. A tubular flexible member including a prosthetic section and a fabric section is provided, with the prosthetic section being connected to the commissure posts and defining leaflets therebetween, and the fabric section being attached to the annular base. In a second embodiment, an expandable heart valve includes an annular tissue-engaging base and a subassembly having an elastic wireform and a plurality of leaflets connected thereto. The annular base and subassembly are separately stored and connected just prior to delivery to the host annulus. Preferably, the leaflet subassembly is stored in its relaxed configuration to avoid deformation of the leaflets. The expandable heart valves may be implanted using a balloon catheter. Preferably, the leaflets of the heart valves are secured to the commissure regions of the expandable stents using a clamping arrangement to reduce stress.
Inventors
- 👤 Stefan Schreck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427; A61F2/243; A61F2/2433; A61F2/2412; A61F2/2418; A61F2/2436; A61F2/2469; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/0075; Y; Y10; Y10S; Y10S623/00; Y10S623/90
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
161 words
A method of heart valve replacement surgery on a patient, comprising: providing a detachable two-part heart valve, each part being expandable from a collapsed state, comprising: a generally annular tissue-engaging base having a plurality of axial posts extending in an outflow direction each having a commissure connector on an outflow end thereof; and a heart valve subassembly having an undulating elastic wireform defining a plurality of alternating upstanding commissures and arcuate cusps, each commissure having a connector thereon configured for mating with one of the commissure connectors on the tissue-engaging base to form a pair of mating connectors, the heart valve subassembly further having a plurality of prosthetic leaflets attached to the wireform; delivering the base in a collapsed state to an annulus of the patient's heart valve being replaced; expanding the base into an expanded state in contact with the annulus; and connecting the mating connectors on the tissue-engaging base and heart valve subassembly to form the two-part heart valve.
Claim 2
Independent Claim
161 words
A method of heart valve replacement surgery on a patient, comprising: providing a detachable two-part heart valve, each part being expandable from a collapsed state, comprising: a generally annular tissue-engaging base having a plurality of axial posts extending in an outflow direction each having a commissure connector on an outflow end thereof; and a heart valve subassembly having an undulating elastic wireform defining a plurality of alternating upstanding commissures and arcuate cusps, each commissure having a connector thereon configured for mating with one of the commissure connectors on the tissue-engaging base to form a pair of mating connectors, the heart valve subassembly further having a plurality of prosthetic leaflets attached to the wireform; delivering the base in a collapsed state to an annulus of the patient's heart valve being replaced; expanding the base into an expanded state in contact with the annulus; and connecting the mating connectors on the tissue-engaging base and heart valve subassembly to form the two-part heart valve.
Claim 3
Dependent Claim
35 words
The method of claim 1 , further including: storing the two parts of the heart valve in separate sterile containers; and connecting the two parts to form a heart valve just prior to the surgery.
Claim 4
Dependent Claim
26 words
The method of claim 1 , wherein the step of delivering the base to the annulus is accomplished by passing the base through the patient's vasculature.
Claim 5
Dependent Claim
30 words
The method of claim 3 , wherein the step of delivering the base to the annulus is accomplished by passing the base through a catheter introduced into a peripheral artery.
Claim 6
Dependent Claim
26 words
The method of claim 1 , wherein the step of delivering the base to the annulus is accomplished via a minimally-invasive port in the patient's chest.
Claim 7
Dependent Claim
20 words
The method of claim 1 , wherein the tissue-engaging base is plastically-expandable from its collapsed state to its expanded state.
Claim 8
Dependent Claim
55 words
The method of claim 1 , wherein connectors on the heart valve subassembly are also provided on each of the cusps of the elastic wireform, the tissue-engaging base having a plurality of axial posts extending in an outflow direction at a mid-point of each cusp and having a cusp connector on an outflow end thereof.
Claim 9
Dependent Claim
16 words
The method of claim 1 , wherein the mating connectors are joined together by axial compression.
Claim 10
Dependent Claim
16 words
The method of claim 1 , wherein the mating connectors are configured to snap fit together.
Claim 11
Dependent Claim
29 words
The method of claim 1 , wherein one of each pair of mating connectors comprises a partial circle opening in an axial direction toward the other of the pair.
Claim 12
Independent Claim
213 words
A method of minimally-invasive heart valve replacement surgery on a patient using a two-part heart valve, comprising: providing an expandable heart valve subassembly having an undulating elastic wireform defining a plurality of alternating upstanding commissures and arcuate cusps, and a plurality of prosthetic leaflets attached to the wireform, each leaflet having an approximately semi-circular cusp edge terminating at each end in commissure portions, and a coapting edge extending between the commissure portions, each leaflet being attached to the wireform substantially entirely along the cusp edge and at both commissure portions, with a coapting edge remaining unattached; storing the valve subassembly by itself in an expanded configuration; compressing the valve subassembly just prior to implantation; delivering the compressed valve subassembly to a heart valve annulus; expanding the valve subassembly; and coupling the valve subassembly to a separate annular tissue-engaging base to form the two-part heart valve wherein the leaflets permit one-way flow through the annulus and wherein the tissue-engaging base has a plurality of axial posts extending in an outflow direction each having a commissure connector on an outflow end thereof, and each commissure of the heart valve subassembly wireform has a connector thereon configured for mating with one of the commissure connectors on the tissue-engaging base to form a pair of mating connectors.
Claim 13
Independent Claim
213 words
A method of minimally-invasive heart valve replacement surgery on a patient using a two-part heart valve, comprising: providing an expandable heart valve subassembly having an undulating elastic wireform defining a plurality of alternating upstanding commissures and arcuate cusps, and a plurality of prosthetic leaflets attached to the wireform, each leaflet having an approximately semi-circular cusp edge terminating at each end in commissure portions, and a coapting edge extending between the commissure portions, each leaflet being attached to the wireform substantially entirely along the cusp edge and at both commissure portions, with a coapting edge remaining unattached; storing the valve subassembly by itself in an expanded configuration; compressing the valve subassembly just prior to implantation; delivering the compressed valve subassembly to a heart valve annulus; expanding the valve subassembly; and coupling the valve subassembly to a separate annular tissue-engaging base to form the two-part heart valve wherein the leaflets permit one-way flow through the annulus and wherein the tissue-engaging base has a plurality of axial posts extending in an outflow direction each having a commissure connector on an outflow end thereof, and each commissure of the heart valve subassembly wireform has a connector thereon configured for mating with one of the commissure connectors on the tissue-engaging base to form a pair of mating connectors.
Claim 14
Dependent Claim
32 words
The method of claim 11 , wherein the tissue-engaging base is expandable from a collapsed state, and the method includes expanding the base into an expanded state in contact with the annulus.
Claim 15
Dependent Claim
20 words
The method of claim 12 , wherein the tissue-engaging base is plastically-expandable from its collapsed state to its expanded state.
Claim 16
Dependent Claim
20 words
The method of claim 12 , wherein the tissue-engaging base is self-expandable from its collapsed state to its expanded state.
Claim 17
Dependent Claim
29 words
The method of claim 11 , wherein the step of delivering the compressed valve subassembly to the annulus is accomplished by passing the valve subassembly through the patient's vasculature.
Claim 18
Dependent Claim
33 words
The method of claim 15 , wherein the step of delivering the compressed valve subassembly to the annulus is accomplished by passing the valve subassembly through a catheter introduced into a peripheral artery.
Claim 19
Dependent Claim
27 words
The method of claim 11 , wherein the step of delivering the compressed valve subassembly the annulus is accomplished via a minimally-invasive port in the patient's chest.
Claim 20
Dependent Claim
16 words
The method of claim 11 , wherein the mating connectors are joined together by axial compression.
Claim 21
Dependent Claim
16 words
The method of claim 11 , wherein the mating connectors are configured to snap fit together.
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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) | 2015-01-09 | 2015-07-11 | 2016-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2019-01-09 | 2019-07-11 | 2020-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2023-01-09 | 2023-07-11 | 2024-01-10 | $7700.00 | Window Closed / Lapsed |