US6287339B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sutureless heart valve prosthesis
Assignee: EDDY & MARTIN GOLDFARB AND ASSOCIATES
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Filing: 1999-05-27
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Granted: 2001-09-11
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Expires: 2019-05-27
Abstract
Abstract A heart valve prosthesis which incorporates a substantially permanently implantable abutment structure which is surgically attached to a native heart valve annulus through utilization of a resilient metal substructure having an attachment portion which moves into engagement with a native heart annulus upon being released from a retracted orientation. The system employs a positioning instrument which locates the abutment structure and associated heart valve prosthesis at the proper location for releasing the attachment components. Mechanical heart valve components including an occluder function are removably attached to the abutment structure using sutures, such that the valve function itself may be subsequently replaced.
Inventors
- 👤 Demetrio J. Vazquez
- 👤 Louis A. Campbell
- 👤 Jeffrey M. Mabrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; A61F2/2409; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0063
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
195 words
A heart valve prosthesis for implantation at a heart valve annulus location having an aortic valve-mitral valve annulus region of mutual adjacency, comprising: A) a substantially permanently implantable abutment structure comprising a resilient metal substructure extending about a centrally disposed valve channel opening and having 1) an attachment portion extending outwardly from said opening to define a first region having a widthwise first radial dimension selected for effecting resiliently biased engagement with said heart valve annulus at locations without said region of mutual adjacency; 2) a second region having a widthwise second radial dimension less than said first radial dimension for engagement with said heart valve annulus within said region of mutual adjacency, said second widthwise dimension being effective to avoid substantial interference between the aortic and mitral valve functions; and 3) a tissue ingrowth promoting porous layer located over substantially all surfaces of said substructure; and B) a heart valve comprising a support ring with an interior valve channel supporting a blood flow control occluder and having an outwardly disposed annular sewing cuff removably coupled with said abutment structure in a manner axially aligning said support ring with said centrally disposed valve channel opening.
Claim 2
Dependent Claim
195 words
A heart valve prosthesis for implantation at a heart valve annulus location having an aortic valve-mitral valve annulus region of mutual adjacency, comprising: A) a substantially permanently implantable abutment structure comprising a resilient metal substructure extending about a centrally disposed valve channel opening and having 1) an attachment portion extending outwardly from said opening to define a first region having a widthwise first radial dimension selected for effecting resiliently biased engagement with said heart valve annulus at locations without said region of mutual adjacency; 2) a second region having a widthwise second radial dimension less than said first radial dimension for engagement with said heart valve annulus within said region of mutual adjacency, said second widthwise dimension being effective to avoid substantial interference between the aortic and mitral valve functions; and 3) a tissue ingrowth promoting porous layer located over substantially all surfaces of said substructure; and B) a heart valve comprising a support ring with an interior valve channel supporting a blood flow control occluder and having an outwardly disposed annular sewing cuff removably coupled with said abutment structure in a manner axially aligning said support ring with said centrally disposed valve channel opening.
Claim 3
Dependent Claim
22 words
The heart valve prosthesis of claim 1 in which said heart valve sewing cuff is attached to said abutment structure with sutures.
Claim 4
Dependent Claim
18 words
The heart valve prosthesis of claim 1 in which said porous layer is a tissue ingrowth promoting cloth.
Claim 5
Dependent Claim
27 words
The heart valve prosthesis of claim 3 in which said cloth is provided as an integral component of said annular sewing cuff to effect said removable coupling.
Claim 6
Dependent Claim
33 words
The heart valve prosthesis of claim 1 in which said attachment portion comprises an elastic metal engagement component biased for movement outwardly into tissue at the ventricular side of said heart valve annulus.
Claim 7
Dependent Claim
37 words
The heart valve prosthesis of claim 1 in which said attachment portion comprises an engagement component comprising a shape memory metal having a memory orientation for engaging tissue at the ventricular side of said heart valve annulus.
Claim 8
Dependent Claim
69 words
The heart valve prosthesis of claim 1 wherein: 1) said metal substructure comprises an outwardly open, generally torus-shaped structure; 2) said attachment portion comprises a first engagement portion for engagement with the aortic side of said heart valve annulus and a second engagement portion for engagement with the ventricular side of said heart valve annulus; and 3) said heart valve support ring is coupled to said valve channel opening.
Claim 9
Dependent Claim
38 words
The heart valve prosthesis of claim 7 wherein at least one of said first and said second engagement portions comprises an elastic metal component biased for movement from a valve axial orientation outwardly toward said heart valve annulus.
Claim 10
Dependent Claim
43 words
The heart valve prosthesis of claim 7 wherein at least one of said first and said second engagement portions comprises a shape memory metal having a memory orientation biasing it for movement from a valve axial orientation outwardly toward said heart valve annulus.
Claim 11
Dependent Claim
31 words
The heart valve prosthesis of claim 1 wherein said second region is generally structured having an outer periphery configured as a chord of a circle defined by said first radial dimension.
Claim 12
Dependent Claim
84 words
The heart valve prosthesis of claim 1 wherein: A) said heart valve support ring comprises a diameter; B) said substructure comprises an annulus having an outer circular periphery corresponding to the diameter of the support ring; C) said attachment portion comprises three tissue engaging tabs extending outwardly from said circular periphery and three tissue engaging resiliently outwardly biased dogs; D) said sewing cuff comprises a flange extending outwardly from said heart valve support ring, said sewing cuff being removably coupled to said substructure annulus.
Claim 13
Dependent Claim
30 words
The heart valve prosthesis of claim 11 in which said substructure attachment portion tabs extend radially outwardly from said annulus outer periphery a distance effective to resist blood backflow pressure.
Claim 14
Dependent Claim
24 words
The heart valve prosthesis of claim 11 in which said substructure attachment portion tabs and dogs are located without said region of mutual adjacency.
Claim 15
Dependent Claim
19 words
The heart valve prosthesis of claim 11 wherein said sewing cuff is coupled to said substructure annulus with sutures.
Claim 16
Dependent Claim
39 words
The heart valve prosthesis of claim 11 in which: said substructure annulus includes an array of sewing apertures extending therethrough; and said heart valve sewing cuff is attached to said substructure annulus with sutures extending within said sewing apertures.
Claim 17
Dependent Claim
29 words
The heart valve prosthesis of claim 11 wherein said attachment portion dogs extend outwardly from said circular periphery at radial locations offset from the radial locations of said tabs.
Claim 18
Dependent Claim
24 words
The heart valve prosthesis of claim 16 in which said substructure attachment portion tabs and dogs are located without said region of mutual adjacency.
Claim 19
Dependent Claim
113 words
The heart valve prosthesis of claim 1 wherein: A) said substructure comprises a cylinder having a periphery, first and second ends, and a diameter, said cylinder further comprising a generally flat annulus extending radially outwardly from the periphery at said first end, said generally flat annulus having an aortic side and a ventricular side abuttable on the aortic side of said heart valve annulus; B) said attachment portion comprises three tissue engaging tabs extending outwardly from said periphery and three tissue engaging resiliently outwardly biased dogs extending from said second end of said cylinder; and C) said sewing cuff is coupled to said substructure adjacent the atrial side of said generally flat annulus.
Claim 20
Dependent Claim
30 words
The heart valve prosthesis of claim 18 in which said substructure attachment portion tabs extend radially outwardly from said annulus outer periphery a distance effective to resist blood backflow pressure.
Claim 21
Dependent Claim
24 words
The heart valve prosthesis of claim 18 in which said substructure attachment portion tabs and dogs are located without said region of mutual adjacency.
Claim 22
Dependent Claim
22 words
The heart valve prosthesis of claim 18 in which said mechanical heart valve sewing cuff is attached to said substructure with sutures.
Claim 23
Dependent Claim
43 words
The heart valve prosthesis of claim 18 in which: said substructure includes an array of sewing apertures extending there-through in the vicinity of said annulus; and said heart valve sewing cuff is attached to said substructure with sutures extending within said sewing apertures.
References Cited (Backward Citations)
US3996623A
Cited
US4576605A
Cited
US5571175A
Cited
US5843179A
Cited
US6042607A
Cited
US5824069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-10 | 2005-03-12 | 2005-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-10 | 2009-03-12 | 2009-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-10 | 2013-03-12 | 2013-09-11 | $7700.00 | Window Closed / Lapsed |