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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7371258 | Valved prosthesis with porous substrate An implantable prosthesis can be formed from an improved biocompatible material that provides for cellular colonization of the biocompatible material. Specifically, the biocompatible material is a rigid porous material. In embodiments of particular interest, the imp... | 05/13/2008 |
| 7267686 | Implantable prosthetic valve A prosthetic valve for implantation within a fluid conducting lumen within a body includes an elongate generally cylindrical radially collapsible valve body scaffold defining a fluid passageway therethrough for retentive positioning within the lumen. A radially coll... | 09/11/2007 |
| 7244242 | Valve treatment catheter and methods The invention provides a catheter for insertion into a biological passage which contains a first flowing fluid, the catheter including a tubular member having a proximal end and a distal end; a fluid delivery lumen contained within the tubular member; an inflatable ... | 07/17/2007 |
| 7156872 | Implantable valve system An implantable valve having a valve element or leaflet and a base that is attachable to a vessel wall using a connector such as a screw, pin or a staple. The valve can be implanted using a catheter to position the valve in a desired location and drive the connector ... | 01/02/2007 |
| 7018404 | Conduit for aorta or pulmonary artery replacement Prosthetic conduits include biocompatible material formed into a generally cylindrical section and an expanded section connected to the generally cylindrical section. The conduit has a lumen extending through the generally cylindrical section and the expanded sectio... | 03/28/2006 |
| 6951573 | Prosthetic aortic valve A prosthetic aortic valve is designed to be implanted in the natural aortic annulus and to extend into the ascending aorta to a point short of the right and left coronary arteries. Blood leakage around the valve is prevented by tension in one or more circumferential... | 10/04/2005 |
| 6896700 | Tri-leaflet mechanical heart valve A tri-leaflet heart valve includes an annular valve base with an inner surface forming an orifice through which blood flows from the upstream side to the downstream side. Three protruding hinges, each with concave sockets on opposite sides, are formed on the inner s... | 05/24/2005 |
| 6395024 | Mechanical heart valve An improved trileaflet mechanical heart valve 100 can include an improved leaflet 110. The valve 100 and leaflet 110 provide improved flow characteristics, minimize blood clotting behind the leaflets, and provide more natural opening and closing times. Th... | 05/28/2002 |
| 6183510 | Heart valve prosthesis A heart valve prosthesis with a valve ring and at least one substantially elongated wing valve pivotally mounted about an axis located in the plane of the valve ring, in which the bearings of the wing valve or valves are in each case formed by a swivel pi... | 02/06/2001 |
| 5908451 | Prosthetic heart valve Bileaflet heart valves are illustrated which employ a pair of leaflets having flat inflow and outflow surfaces that are nonparallel to each other with the downstream arcuate edges being thinner than the mating upstream edges. The pivot mechanisms are cons... | 06/01/1999 |
| 5861030 | Bileaflet mechanical heart valve having arrowhead slot hinge configuration A bileaflet mechanical cardiovascular valve having a generally annular valve body and two occluder leaflets mounted within the valve body such that the occluder leaflets will move back and forth between an open configuration wherein blood is permitted to ... | 01/19/1999 |
| 5843183 | Trileaflet heart valve A trileaflet heart valve includes a generally annular valve body having an interior wall of nominally circular cross-section into which three wedge-shaped projections radially extend to provide three pairs of flanking flat surfaces between which three lea... | 12/01/1998 |
| 5814099 | Central opening curved bileaflet heart valve prosthesis A bileaflet prosthetic valve has leaflet pivots symmetrically or centrically located, thereby providing a central opening about twice the size of the two lateral openings. The valve opens from the center outward to provide nonturbulent central flow. The l... | 09/29/1998 |
| 5405381 | Hinged heart valve prosthesis A heart valve prosthesis has a substantially annular valve body and two leaflets which are disposed in the valve body and, be means of a hinge mechanism, are pivotable between an open position and a closed position. The leaflets are substantially semicirc... | 04/11/1995 |
| 5354330 | Heart valve prosthesis An improved heart valve prosthesis arranged for permanent implantation to replace a defective natural heart valve, wherein the improved prosthesis device includes an annular body or ring designed to retain a pair of rotatable flat plate occluders. The str... | 10/11/1994 |
| 5002567 | Prosthetic heart valve In a prosthetic heart valve comprising a generally annular stent and at least two obturators mounted in the stent so as to be above to pivot between an open position and a closed position, the stent is provided with at least one element which projects inw... | 03/26/1991 |
| 4935030 | Mechanical heart valve prosthesis A mechanical heart valve prosthesis has an annular base which defines a passageway for blood flow, and a pair of valve leaflets hingedly mounted within the annular base for regulating direction of the blood flow. The hinge mechanism includes camming inden... | 06/19/1990 |
| 4872875 | Prosthetic heart valve A heart valve of the bi-leaflet or monoleaflet type having improved reductions in drag on blood flow through the fully opened heart valve. The leaflets are pivotally mounted in a heart valve body for movement between closed and opened positions. The leafl... | 10/10/1989 |
| 4863459 | Bi-leaflet heart valve Disclosed is a heart valve prosthesis having an annular valve body defining a central passageway for blood flow. A pair of curved, convex-concave leaflet occluders pivotally mounted in the valve body and movable between open and closed positions have oppo... | 09/05/1989 |
| 4846830 | Cardiac valve prosthesis A cardiac valve prosthesis in which each closing body has a skeleton line which is curved in the area of the swivel axis. The curved area is followed by a rectilinear area, thus causing a linear cross sectional enlargement in the outlet region of the pass... | 07/11/1989 |
| 4822353 | Heart valve Improved versions of heart valve prostheses include the usual generally annular body having an interior surface defining a blood flow passageway and having one or two occluders supported thereon for alternately blocking and then allowing the flow of blood... | 04/18/1989 |
| 4808180 | Prosthetic heart valve An improved heart valve having an annular valve housing and two leaflets supported for pivotable movement within the annular valve housing. Each leaflet is pivoted about an axis displaced from the center of the valve housing. When open, the leaflets pivot... | 02/28/1989 |
| 4692165 | Heart valve Improved versions of heart valve prostheses include the usual generally annular body having an interior surface defining a blood flow passageway and having one or two occluders supported thereon for alternately blocking and then allowing the flow of blood... | 09/08/1987 |
| 4676789 | Heart valve Bileaflet biconical heart valve which duplicates the hemodynamics of a natural heart valve in the human heart where tips of biconical halves of the heart valve pivot outwardly in a manner representing that of natural heart valve tissue. In one embodiment ... | 06/30/1987 |
| 4605408 | Artificial cardiac valve with active opening The present invention relates to a cardiac valve comprising a seat and at least one mobile element ensuring opening and closure of the valve, characterized in that said seat and/or said mobile element comprises at least one device, known per se, which ens... | 08/12/1986 |
| 4597767 | Split leaflet heart valve A check valve for cardiac surgery and the like has a hollow valve body supporting spring biased split leaflets hinged for swinging movement from the base thereof between normally closed position and open position wherein the leaflets form a continuation o... | 07/01/1986 |
| 4425670 | Cardiac valvular prosthesis with rheodynamic disc A cardiac valvular prosthesis comprising an occluder disc, a supporting ring pivotally supporting said disc, and a suturing ring arranged on an outer portion of said supporting ring and adapted to facilitate suturing to the annulus of a cardiac valve to b... | 01/17/1984 |
| 4423525 | Heart valve prosthesis The prosthesis comprises an annular frame and a disc-shaped obturator which is coupled to the frame and is pivotable, under the action of the blood flow, between an open annular position and a closed angular position, so as to allow the flow of blood thro... | 01/03/1984 |
| 4373216 | Heart valves having edge-guided occluders Heart valves having valve members which are guided between their open and closed positions by projections extending inward from the annular body and interengaging with complementary notches in the peripheries of the occluders. Protuberances associated wit... | 02/15/1983 |
| 4225980 | Metallic cardiac valve prosthesis A metallic cardiac valve prosthesis having an aortic as well as a mitral application, the purpose of which is to obtain an ample, highly physiological and laminar flow of blood, includes a ring, the outer contour of which is circular and the inner contour... | 10/07/1980 |
| 4159543 | Heart valve prosthesis A heart valve is disclosed comprising: (a) a substantially circular ring having at least one seat and known types of suture means, and (b) two substantially semicircular movable flaps adapted to rest on the said seat, Comprising means permitting the said flaps... | 07/03/1979 |
| 4123805 | Artificial heart valve An artificial heart valve consists basically of a valve ring and a valve flap in the form of a disc which is pivotally mounted eccentrically in the valve ring, the external circumferential surface of the valve flap cooperating with the internal contour of... | 11/07/1978 |
