Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1996-03-29
1998-10-20
Willse, David H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
A61F 224
Patent
active
058240624
ABSTRACT:
A bileaflet heart valve comprising an annular base and pivoting leaflets. Each leaflet if "free-floating" within recesses without fixed rotational axis, to increase translational movement and redistribute stresses. Each recess fluidly communicates with a groove extending at least partially around the inner surface of the annular base and flow is directed through the recesses at different angles during antegrade circulation, retrograde circulation, and valve closure. A recess entrance angle to each of the recesses preferably being less than about 35.degree. and the pivoting mechanism within the recess including first and second fulcrum edges of each leaflet shiftably engaged with side surfaces of the respective recess. The leaflets have a beveled bottom surface having two separate planar surfaces which lie at an angle to one another. In preferred embodiments, a central region of each leaflet is spaced apart from the annular base when the leaflet is in a fully closed position to minimize cavitation.
REFERENCES:
patent: Re31040 (1982-09-01), Possis
patent: 3859668 (1975-01-01), Anderson
patent: 3903548 (1975-09-01), Nakib
patent: 4078268 (1978-03-01), Possis
patent: 4114202 (1978-09-01), Roy et al.
patent: 4159543 (1979-07-01), Carpentier
patent: 4178639 (1979-12-01), Bokros
patent: 4240161 (1980-12-01), Huffstutler, Jr.
patent: 4276658 (1981-07-01), Hanson et al.
patent: 4308624 (1982-01-01), Klawitter
patent: 4328592 (1982-05-01), Klawitter
patent: 4357715 (1982-11-01), Klawitter
patent: 4373216 (1983-02-01), Klawitter
patent: 4443894 (1984-04-01), Klawitter
patent: 4451937 (1984-06-01), Klawitter
patent: 4535483 (1985-08-01), Klawitter et al.
patent: 4535484 (1985-08-01), Marconi
patent: 4676789 (1987-06-01), Sorensen et al.
patent: 4689046 (1987-08-01), Bokros
patent: 4692165 (1987-09-01), Bokros
patent: 4808180 (1989-02-01), Johnson
patent: 4863458 (1989-09-01), Bokros
patent: 4863459 (1989-09-01), Olin
patent: 4863467 (1989-09-01), Bokros
patent: 4872875 (1989-10-01), Hwang
patent: 4888010 (1989-12-01), Bokros
patent: 4892540 (1990-01-01), Vallana
patent: 4908028 (1990-03-01), Colon et al.
patent: 4935030 (1990-06-01), Alonso
patent: 4995881 (1991-02-01), Knoch et al.
patent: 5002567 (1991-03-01), Bona et al.
patent: 5026391 (1991-06-01), McQueen et al.
patent: 5061278 (1991-10-01), Bicer
patent: 5064432 (1991-11-01), Reif
patent: 5078737 (1992-01-01), Bona et al.
patent: 5078738 (1992-01-01), Couetil
patent: 5080668 (1992-01-01), Bolz et al.
patent: 5080669 (1992-01-01), Tascon et al.
patent: 5108425 (1992-04-01), Hwang
patent: 5116366 (1992-05-01), Hwang
patent: 5116367 (1992-05-01), Hwang et al.
patent: 5123918 (1992-06-01), Perrier et al.
patent: 5123920 (1992-06-01), Bokros
patent: 5137532 (1992-08-01), Bokros et al.
patent: 5147390 (1992-09-01), Campbell
patent: 5152785 (1992-10-01), Bokros et al.
patent: 5171263 (1992-12-01), Boyer et al.
patent: 5178631 (1993-01-01), Waits
patent: 5178632 (1993-01-01), Hanson
patent: 5192309 (1993-03-01), Stupka et al.
patent: 5197980 (1993-03-01), Gorshkov et al.
patent: 5207707 (1993-05-01), Gourley
patent: 5246453 (1993-09-01), Bokros et al.
patent: 5314467 (1994-05-01), Shu
patent: 5326372 (1994-07-01), Mhatre et al.
patent: 5350421 (1994-09-01), Stupka et al.
patent: 5354330 (1994-10-01), Hanson et al.
patent: 5376111 (1994-12-01), Bokros et al.
patent: 5522886 (1996-06-01), Milo
patent: 5545216 (1996-08-01), Bokros et al.
Feikes, H., et al., Preservation of All Chordae Tendinae and Paillary Muscle During Mitral Valve Replacement with a Tilting Disc Valve, Journal of Cardiac Surgery, vol., No. 2 (1990).
Iung, B., et al., Small Abnormal Echos After Mitral Valve Replacement with Bileaflet Mechanical Prostheses: Predisposing Factors and Effect on Thromboembolism, J. Heart Valve Dis. vol. 2, No. 3 (May 1993).
Stoddard, M., et al., Fibrin Strands are Frequently Attached to St. Jude Medical Mitral Valve Prosthesis as Assessed by Transesophageal Echocardiography, 65th Sess. of the Am. Heart Assoc., Cir. 86 (Supp. I): I-I125 (Nov. 1992).
Brewer, L., Prosthetic Heart Valves, Chapters 19-20, pp. 285-314 (Thomas 1969).
Pierce, W., et al., A Hinged Prosthetic Cardiac Valve Fabricated of Rigid Components, J. Thoracic and Cardiovasc. Surg., vol. 56, No. 2 (1968).
Medical Incorporated brochure, Profile and Leaflet Preservation, undated.
Johnson Shelley N.
Mikhail Adel A.
Patke Nandkishor G.
Stobbs Gene E.
CV Dynamics, Inc.
Freed Robert C.
Willse David H.
LandOfFree
Bileaflet heart valve having dynamic pivot mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bileaflet heart valve having dynamic pivot mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bileaflet heart valve having dynamic pivot mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-240017