EP0050971A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Heart valves having edge-guided occluders
Assignee: Baxter International Inc
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Filing: 1981-10-23
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Granted: —
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Expires: 2001-10-23
Abstract
Abstract Heart valves have pivotal occluders or valve members (15, 115 - 165) which are guided between their open and closed positions by projections (35, 135 - 635) extending inward from the annular body (13, 113 - 613) and interengaging with complementary notches (33, 133 - 163) in the peripheries of the occluders (15,115-615). Protuberances (45, 49, 55,145 -645,149 - 649) associated with the projections (35, 135 - 635) cooperate to define the pivotal axis, serve as open and closed position stops, and retain the valve members (15, 115-615)within thevalve body (13,113-613).
Inventors
- 👤 Jerome John Klawitter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 02:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/035; F16K15/036; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7898; Y10T137/7903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A heart valve prosthesis for allowing blood flow therethrough in a specific direction including a generally annular valve body having an interior surface defining a central passageway for blood flow therethrough, occluder means for blocking the flow of blood through said passageway, said occluder means having an upstream face and a downstream face, notches extending through said occluder means between said upstream face and said downstream and being formed in opposite locations in the periphery of said occluder means, complementary projections which extend generally radially inward from said interior surface into said passageway and which are proportioned to interfit within said notches, τhe shape of said projections being such to guide said occluder means along a path during shifting between open and closed positions that creates both pivotal and translational movement, first means in said annular valve body for engaging said upstream face of said occluder means and providing a stop in the closed position, and second means in said annular valve body for engaging said downstream face of said occluder means and providing a stop in the open position.
Claim 2
Dependent Claim
180 words
A heart valve prosthesis for allowing blood flow therethrough in a specific direction including a generally annular valve body having an interior surface defining a central passageway for blood flow therethrough, occluder means for blocking the flow of blood through said passageway, said occluder means having an upstream face and a downstream face, notches extending through said occluder means between said upstream face and said downstream and being formed in opposite locations in the periphery of said occluder means, complementary projections which extend generally radially inward from said interior surface into said passageway and which are proportioned to interfit within said notches, τhe shape of said projections being such to guide said occluder means along a path during shifting between open and closed positions that creates both pivotal and translational movement, first means in said annular valve body for engaging said upstream face of said occluder means and providing a stop in the closed position, and second means in said annular valve body for engaging said downstream face of said occluder means and providing a stop in the open position.
Claim 3
Dependent Claim
44 words
A heart valve in accordance with Claim 1, wherein said projections extend from substantially flat surfaces formed at diametrically opposite locations in the interior surface of said valve body, and said notches are located in straight segments of said periphery of said occluder means.
Claim 4
Dependent Claim
65 words
A heart valve in accordance with Claim 1, wherein said projections have end sections which substantially fit said notches when said occluder means is stopped in said closed position and said projections decrease in transverse dimension in the direction which said notches travel as said occluder means shifts to said open position to assure washing by the flowing bloodstream of the surfaces defining said notches.
Claim 5
Dependent Claim
26 words
A heart valve in accordance with Claim 1, wherein said valve body has a pair of opposed upstanding standards into which portions of said projections extend.
Claim 6
Dependent Claim
55 words
A heart valve according to Claim 1, wherein said occluder means comprises a pair of leaflets each having a curved major edge, a minor edge which lies closely adjacent the minor edge of the other of said leaflets in said closed position and a pair of said notches formed in opposed locations in its periphery.
Claim 7
Dependent Claim
37 words
A heart valve according to Claim 5, wherein said heart valve body has a pair of protuberances at diametrically opposite locations to contact said leaflets at about the midpoints of said major edges in said closed position.
Claim 8
Dependent Claim
43 words
A heart valve in accordance with Claim 5, wherein each of said leaflets, is generally a section of a tube of curved cross section, each of said leaflets having a generally straight centerline with said notches formed on opposite sides of said centerline.
Claim 9
Dependent Claim
16 words
A heart valve in accordance with Claim 1, wherein said occluder means comprises a unitary occluder.
Claim 10
Dependent Claim
52 words
A heart valve in accordance with Claim 8, wherein said occluder means has a peripheral edge and said first means stops said occluder in said closed position with said peripheral edge in a plane which meets the centerline of said valve body at an angle of between about 65° and about 90°.
Claim 11
Dependent Claim
28 words
A heart valve in accordance with Claim 1, wherein said second means stops said occluder means in said open position with said upstream face abutting said first means.
References Cited (Backward Citations)
No citation records indexed.
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