EP0276975A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Replacement of cardiac valves in heart surgery
Assignee: Individual
•
Filing: 1988-01-26
•
Granted: —
•
Expires: 2008-01-26
Abstract
Abstract A cardiac valve (22) has an annular body of un-supported natural or artificial tissue. The annular body has a bishop's miter shape with a cylindrical end (20) and a pair of diametrically-opposite triangular flap portions (24,26) extending therefrom. Each flap portion has a free apical end (40,50).
Inventors
- 👤 Yoel Ovil
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 20:55
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
43 words
A cardiac valve having an annular body of unsupported natural or artificial tissue, said annular body having a bishop's miter shape with a cylindrical end and a pair of diametrically-opposite triangular flap portions extending therefrom, each flap portion having a free apical end.
Claim 2
Dependent Claim
43 words
A cardiac valve having an annular body of unsupported natural or artificial tissue, said annular body having a bishop's miter shape with a cylindrical end and a pair of diametrically-opposite triangular flap portions extending therefrom, each flap portion having a free apical end.
Claim 3
Dependent Claim
15 words
A cardiac valve according to claim 1 wherein the annular body is of animal pericardium.
Claim 4
Dependent Claim
15 words
A cardiac valve according to claim 2 wherein the pericardium is bovine or pig pericardium.
Claim 5
Independent Claim
98 words
A method of replacing a cardiac valve in a heart of a patient; the method comprising providing a tissue valve consisting of unsupported natural or artifical tissue having a bishop's miter shape with a cylindrical end and a pair of diametrically-opposite triangular flap portions extending therefrom, each flap portion having a free apical end, and the cylindrical end of the tissue valve being secured to a native annulus in the heart, and securing the apical end of each flap portion to papillary muscle of a ventricle or to a side wall of the pulmonary artery or the aorta.
Claim 6
Independent Claim
98 words
A method of replacing a cardiac valve in a heart of a patient; the method comprising providing a tissue valve consisting of unsupported natural or artifical tissue having a bishop's miter shape with a cylindrical end and a pair of diametrically-opposite triangular flap portions extending therefrom, each flap portion having a free apical end, and the cylindrical end of the tissue valve being secured to a native annulus in the heart, and securing the apical end of each flap portion to papillary muscle of a ventricle or to a side wall of the pulmonary artery or the aorta.
Claim 7
Dependent Claim
71 words
A method according to claim 4 including securing the apical end of each flap portion to said papillary muscle or side wall by temporarily securing opposite side edges of an uppar part of the flap portion to the native annulus at diametrically-opposite positions, securing the apical end of the flap portion to said papillary muscle or side wall, and releasing the upper part of the flap portion from the native annulus.
Claim 8
Dependent Claim
81 words
A method according to claim 4 including providing the tissue valve by excising a rectangular portion of tissue from the pericardium of the patient, said rectangular portion having opposite edges, securing the opposite edges together to form a cylinder with a cylindrical end and an opposite end, and removing a pair of diametrically-opposite triangular portions from the opposite end of the tissue cylinder to form said pair of diametrically-opposite triangular flap portions, and securing said cylindrical end to the native annulus.
Claim 9
Dependent Claim
61 words
A method according to claim 4 including providing the tissue valve by making a circular incision through endocardium surrounding the native annulus to form an endocardial cylinder integral at one end with the annulus, and removing a pair of diametrically opposite triangular portions from an opposite end of the endocardial cylinder to form said pair of diametrically opposite triangular flap portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.