EP0986348B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Natural tissue heart valve prosthesis
Assignee: Gabbay Shlomo
•
Filing: 1999-03-24
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Granted: 2002-09-04
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Expires: 2019-03-24
Abstract
Abstract A heart valve prosthesis (88; 128) having a plurality of leaflets (18, 20 and 22; 138, 140 and 142). The valve (10; 130) is covered with a sheath (90; 172) of natural tissue. The sheath (90; 172) extends from an inflow end (12; 132) of the valve (10; 130) beyond an outflow end (14; 134) of the valve (12; 132) to define a plurality of lobes (98, 100 and 102; 182, 184 and 186). A substantially flexible annular ring (60; 162) may be positioned between the sheath (90; 172) and the heart valve (10; 132) to provide additional stability.
Inventors
- 👤 Shlomo Gabbay
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/2409; A61F2220/00; A61F2220/0008
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
184 words
A heart valve prosthesis (88, 128) comprising: a natural tissue heart valve (10, 130) having an inflow
end (12, 132), an outflow end (14, 134) and a generally
cylindrical side wall portion (16) extending between said
inflow end and said outflow end, said valve including a
plurality of leaflets (18, 20, 22), each of said leaflets
having an associated side wall portion (24, 26, 28), said
leaflets and adjacent portions of respective said associated
side wall portions (24, 26, 28) defining commissures (42, 44,
46); an annular ring (60, 70, 80) of a substantially flexible
material positioned around said valve wall intermediate said
inflow and outflow ends; and a sheath (90, 172) of natural tissue attached around said
valve wall (16) and said ring (60, 70, 80), said sheath (90,
172) having an inflow end (92, 174) extending beyond said
inflow end (12, 132) of said heart valve and defining an
implantation flange (94), said sheath having an outflow end
(96, 178) with a plurality of lobes (98, 100, 102, 182, 184,
186) extending beyond said outflow end (14, 134) of said heart
valve.
Claim 2
Dependent Claim
54 words
A heart valve prosthesis (88, 128) as claimed in claim 1
wherein each of said leaflets (18, 20, 22) has side edges (30,
32, 34, 36, 38, 40); adjacent side edges of adjacent said
leaflets and adjacent portions of respective said associated
side wall portions (24, 26, 28) defining said commissures (42,
44, 46).
Claim 3
Dependent Claim
21 words
A heart valve prosthesis as claimed in claim 1 or claim 2
wherein said sheath (90, 172) is made of pericardium.
Claim 4
Dependent Claim
144 words
A heart valve prosthesis as claimed in any preceeding
claim wherein said heart valve comprises a composite heart
valve formed of three heart valve leaflets (18, 20, 22) of
generally similar size, shape and symmetry, each said leaflet
including a valve wall portion (24, 26, 28) having an inflow
end (12, 132), an outflow end (14, 174) and a pair of
generally opposed side edges (30 and 40, 32 and 34, 36 and 38)
extending between the inflow (12, 132) and outflow (14, 134)
ends, said side edges of each of said leaflets being attached
to said side edges of adjacent leaflets such that there is
substantial coaptation between said leaflets, adjacent side
edges of adjacent leaflets defining said commissures (42, 44,
46) and said valve wall portions of said composite heart valve
leaflets defining said side wall portion (16) of said heart
valve.
Claim 5
Dependent Claim
26 words
A heart valve prosthesis as claimed in claim 4 wherein
each of said leaflets (18, 20, 22) is a non-coronary leaflet
of an aortic heart valve.
Claim 6
Dependent Claim
27 words
A heart valve prosthesis as claimed in any proceeding
claim wherein said ring (60, 70, 80) comprises a plastic
material having a substantially thin side wall portion.
Claim 7
Dependent Claim
25 words
A heart valve prosthesis as claimed in any of claims 1 to
5 wherein said ring (60, 70, 80) comprises a resilient thin
wire member.
Claim 8
Dependent Claim
154 words
A heart valve prosthesis (88, 128) comprising: a natural tissue heart valve (10, 130) comprising: a generally cylindrical side wall portion (16) extending
between an inflow end (12, 132) and an outflow end (14,134),
said side wall portion (16) having an outer surface; and a plurality of leaflets (18, 20, 22) disposed within said
side wall portion (16), each of said leaflets (18, 20, 22)
having an associated side wall portion (24, 26, 28), adjacent
said leaflets (18, 20, 22) and respective adjacent portions of
said associated side wall portions defining commissures (42,
44, 46); an outer sheath (90, 172) of natural tissue covering said
outer surface of said heart valve, said outer sheath (90, 172)
having an outflow end portion (96, 178) extending beyond said
outflow end (14, 134) of said heart valve (10, 130) adjacent
said commissures (42, 44, 46) to define a plurality of lobes
(98, 100, 102, 182, 184, 186).
Claim 9
Dependent Claim
54 words
A heart valve prosthesis (88, 128) as claimed in claim 8
wherein each of said leaflets (18, 20, 22) has side edges (30,
32, 34, 36, 38, 40); adjacent side edges of adjacent said
leaflets (18, 20, 22) and respective adjacent portions of said
associated side wall portions defining said commissures (42,
44, 46).
Claim 10
Dependent Claim
65 words
A heart valve prosthesis as claimed in claim 8 or claim 9
further comprising a substantially flexible annular ring (60,
70, 80) positioned around said outer surface of said side wall
portion (16) spaced from and intermediate said outflow end
(14, 134) of said heart valve (10, 130), said outer sheath
(90, 172) covering said ring, (60, 70, 80) and said heart
valve (10, 130).
Claim 11
Dependent Claim
58 words
A heart valve prosthesis as claimed in claim 10 further
comprising a second sheath (160) of natural tissue covering
said side wall portion of said heart valve intermediate said
ring (60, 70, 80) and said heart valve (10, 130), said second
sheath (160) extending between said inflow (12, 132) and
outflow (14, 134) ends of said heart valve.
Claim 12
Independent Claim
220 words
A method of making a heart valve prosthesis comprising
the steps of: providing a heart valve (10, 130) having an inflow end
(12, 132), an outflow end (14, 134), a generally cylindrical
side wall portion (16) extending between said inflow end (12,
132) and said outflow end (14, 134), said heart valve (10,
130) including a plurality of leaflets (18, 20, 22) disposed
within said side wall portion (16), each of said leaflets
having an associated side wall portion (24, 26, 28), adjacent
said leaflets (18, 20, 22) and respective adjacent portions of
said associated side wall portions defining commissures (42,
44, 46); positioning an annular ring (60, 70, 80) of a
substantially flexible and resilient material around said side
wall portion (16) intermediate said inflow (12, 132) and
outflow (14, 134) ends of said heart valve (10, 130); covering said annular ring (60, 70, 80) and said outer
surface of said heart valve with a sheath (90, 172) of natural
tissue, said sheath (90, 172) having an inflow end (92, 174)
portion and an outflow end portion (96); and extending said outflow end portion (96) of said sheath
(90) beyond said outflow end (14, 134) of said heart valve
(10, 130) to define a plurality of lobes (98, 100, 102, 182,
184, 186) adjacent said commissures (42, 44, 46).
Claim 13
Dependent Claim
53 words
A method as claimed in claim 12 wherein each of said
leaflets (18, 20, 22) has a pair of side edges (30, 32, 34,
36, 38, 40); adjacent side edges of adjacent said leaflets
(18, 20, 22) and respective adjacent portions of said
associated side wall portions defining said commissures (42,
44, 46).
References Cited (Backward Citations)
No citation records indexed.
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