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7594974 Method of cutting material for use in implantable medical device  
A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a...
7591847 Stentless bioprosthetic valve having chordae for replacing a mitral valve  
A stentless bioprosthetic valve includes at least one piece of biocompatible material comprising a bi-leaflet conduit having a proximal end and a distal end. The proximal end defines a first...
7563280 Efficient implantation of heart valve prostheses  
Tools can be used to assist with the implantation of heart valve prostheses, especially stentless aortic heart valve prostheses. In some embodiments, a heart valve prosthesis includes a plurality...
7556645 Translumenally implantable heart valve with formed in place support  
A cardiovascular prosthetic valve includes a cuff having a distal end and a proximal end. An inflatable structure is coupled to the cuff and has at least one inflatable channel that forms a...
7547322 Prosthetic valve and method for making same  
A prosthetic valve for placement within a body passage includes at least two valve leaflets made from a first layer of either peritoneal fascia tissue or pleural tissue. Support structure is...
RE40570 Apparatuses and methods for treating biological tissue to mitigate calcification  
An apparatus for treating fixed biological tissue to inhibit calcification of the biological tissue following implantation thereof in a mammalian body. The apparatus includes a container for...
7323010 Biomaterial including animal corneal tissue  
Biomaterial including tissues basically obtained from an animal cornea, in particular, from a fish cornea. A cardiac valve ( 10 ) which may envisage at least one cusp ( 15 ) made with an organic...
7316712 Tissue heart valve with annulus support structure  
A heart valve prosthesis can be formed with a harvested tissue heart valve and a sewing rim that extends outwardly from the annulus of the harvested heart valve for easier attachment of the...
7141064 Compressed tissue for heart valve leaflets  
A process and system for compressing bioprosthetic tissue for use in medical implants. The process involves placing the tissue between two compressive surfaces and applying a force to reduce any...
7037333 Prosthetic heart valve  
A tubular prosthetic semilunar or atrioventricular heart valve is formed by cutting flat, flexible leaflets according to a pattern. The valve is constructed by aligning the side edges of adjacent...
7029434 Methods for treating implantable biological tissues to mitigate post—implantation calcification  
A method for treating fixed biological tissue inhibits calcification of the biological tissue following implantation thereof in a mammalian body. The method includes placing the biological tissue...
7025780 Valvular prosthesis  
A valvular prosthesis and method of using the prosthesis are disclosed. A valve apparatus is located within a stent apparatus, such that the prosthesis is deformable between a first condition and a...
7014655 Method for conserving biological prostheses, conserved biological prostheses and conserving solutions  
The invention concerns a method of conserving biological prostheses, wherein the method includes the following steps: (a) treating biological prostheses with a solution which contains a mixture of...
6945996 Replacement mitral valve  
A sewing ring ( 12 ) has a diameter commensurate with a diameter of a removed mitral valve. Skirts ( 44, 46 ) of mesh or net material extend downward from the sewing ring and line the walls of an...
6911043 Prosthetic heart value  
A tubular prosthetic semilunar or atrioventricular heart valve is formed by cutting flat, flexible leaflets according to a pattern. The valve is constructed by aligning the side edges of adjacent...
6872226 Method of cutting material for use in implantable medical device  
A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a...
6861211 Stabilization of implantable bioprosthetic devices  
The invention relates to methods of stabilizing glycosaminoglycans in a biological tissue (e.g. a bioprosthetic implant) in conjunction with cross-linking of protein in the tissue. The methods of...
6837902 Methods of making bioprosthetic heart valves with strain matched leaflets  
Heart valve leaflet selection methods and apparatuses which subject individual leaflets to loads and measure the resulting deflection to more reliably group leaflets of similar physical...
6830586 Stentless atrioventricular heart valve fabricated from a singular flat membrane  
A stentless atrioventricular valve intended for attaching to a circumferential valve ring and papillary muscles of a patient comprising a singular flexible membrane of tissue or synthetic...
6719789 Replacement heart valve  
A prosthetic heart valve has leaflets made of a thin and flexible material. The side edges of adjacent leaflets are sewn together so as to form a substantially tubular valve structure having an...
6652583 Cardiac valve replacement  
The invention provides a replacement heart valve which contains an acellular matrix as a structural scaffold. The scaffold is seeded with isolated myofibroblasts and/or endothelial cells prior to...
6610088 Biologically covered heart valve prosthesis  
A system and method are disclosed for covering a heart valve prosthesis with biological tissue, such as pericardium. In one aspect, the prosthesis includes a stent that is covered with a fabric...
6592618 In vitro modification of cardiac valvular xenografts  
The present invention is directed to methods for obtaining heart valves from a donor animal that have a reduced tendency to cause inflammation when implanted into a human patient. The valves...
6558417 Single suture biological tissue aortic stentless valve  
A semilunar stentless valve is formed entirely of biological tissue, and has a plurality of leaflets that are joined to form an annulus and coapt to form a one-way valve. The leaflets open fully to...
6553681 Methods for measuring a bio-material for use in an implant  
A system and method to facilitate thickness measurement of bio-material workpiece, preferably a sheet, and to topographically map the sheet into similar thickness zones for later use. In...
6540781 Cryopreserved homografts and other stentless bioprosthetic heart valves having natural tissue sewing rings  
Pre-trimmed, cryopreserved homografts and other stentless bioprosthetic heart valves having natural tissue sewing rings formed thereon. The sewing ring may be formed of strip of pericardium or...
6497725 Differential treatment of prosthetic devices  
An apparatus is disclosed for differentially treating a medical device. One portion of the device is treated with a first fluid and a separate portion is treated with a second fluid. The second...
6413275 Apparatus for testing bioprosthetic heart valve leaflets  
Heart valve leaflet selection methods and apparatuses which subject individual leaflets to loads and measure the resulting deflection to more reliably group leaflets of similar physical...
6409759 Harvested tissue heart valve with sewing rim  
A heart valve prosthesis can be formed with a harvested tissue heart valve and a sewing rim that extends outwardly from the annulus of the harvested heart valve for easier attachment of the...
6375680 Substrates for forming synthetic tissues  
A prosthesis is formed from a substrate with an associated attraction compound. The attraction compound binds viable precursor cells to the substrate. Thus, the substrate forms a synthetic tissue...
6358277 Atrio-ventricular valvular device  
An anatomically designed atrioventricular valve is made of biologically compatible synthetic membrane or biological membrane of autologous, homologous or heterologous origin. A single piece of the...
6350282 Stented bioprosthetic heart valve  
A supported bioprosthetic heart valve is provided. The valve includes a stent and a bilogical valve member. The stent has an annular frame defined by a support rail. The support rail is formed to...
6338740 Flexible heart valve leaflets  
A heart valve with a structural stent and radially moveable cusps and commissures. The stent may be of three separate elements, each having a cusp portion and two commissure portions. The...
6328763 Optimized geometry of a tissue pattern for semilunar heart valve reconstruction  
A new and unique, optimized, two-dimensional heart valve tissue pattern, valve, and a method of reconstructing a three-dimensional semilunar heart valve, or portion thereof. In one preferred...
6270526 Replacement semilunar heart valves using flexible tubes  
A method is disclosed for using tubular material to replace a semilunar heart valve (i.e., an aortic or pulmonary valve). To create such a replacement valve, the native valve cusps are removed from...
6254635 Calcification-resistant medical articles  
Medical articles can include biocompatible material with a deposit of anticalcific elemental metal. The biocompatible material can be tissue, fabric or the like. The biocompatible material can be...
6245105 Method of testing bioprosthetic heart valve leaflets  
Heart valve leaflet selection methods and apparatuses which subject individual leaflets to loads and measure the resulting deflection to more reliably group leaflets of similar physical...
6165216 Human cardiac valve placement with marine mammal ventricular outflow (aortic or pulmonary) valve  
The present invention provides a method of treating human cardiac valve dysfunction, by replacing the existing valve with a novel bioprosthesis of the present invention which comprises a marine...
6126686 Artificial vascular valves  
A method for preparing vascular valves from submucosal tissue is described. Both bicuspid and tricuspid valve constructs are described. The bicuspid constructs can be formed with or without a...
6110201 Bifurcated biological pulmonary valved conduit  
The present invention comprises a pulmonary valved conduit that permits inflow diameters greater than about 22 mm while still maintaining the advantages of a naturally-formed biological valved...
6060640 Multiple-layer, formed-in-place immunoisolation membrane structures for implantation of cells in host tissue  
A permeable structure forms a chamber to hold living cells. The structure includes a first permeable region surrounding at least a portion of the chamber having a conformation that, when implanted...
5935168 Glutaraldehyde-fixed bioprostheses  
Methods for treating glutaraldehyde-fixed collagenous tissues to mitigate there propensity for subsequent calcification and to improve durability. Collagenous tissues which have been harvested and...
5549666 Natural tissue valve prostheses having variably complaint leaflets  
Variably compliant natural tissue valve leaflets and vascular bioprosthetics incorporating variably compliant leaflets are provided along with methods for their manufacture. The variably compliant...
5489297 Bioprosthetic heart valve with absorbable stent  
The invention relates to a bioprosthetic heart valve having leaflets affixed to a substantially absorpable stent. The leaflets can be derived from a biological membrane which is affixed to the...
5336258 Stentless heart valve and holder  
A stentless aortic heart valve having a disposable holder with a removable handle can be manually reversed by the physician during suturing to provide a relatively unobstructed view into the...
5080670 Bioprosthetic valve  
A bioprosthetic valve made from a biological tissue containing collagen which has been cross-linked with a polyepoxy compound is disclosed. The valve has excellent biocompatibility and is durable...
4790844 Replacement of cardiac valves in heart surgery  
A cardiac valve has an annular body of unsupported natural or artificial tissue. The annular body has a bishop's miter shape with a cylindrical end and a pair of diametrically-opposite triangular...
4778461 Heart valve prosthesis and process for its production  
A heart valve prosthesis for replacing the aortic valve or the pulmonary valve, consisting of a support ring with at least two commissure supports in each case and flexible cusps, is characterized...
4759758 Prosthetic heart valve  
An improved prosthetic heart valve comprises a support body or stent covered by a layer of biological tissue having only the smooth surfaces thereof presented outwardly. The stent has a cutaway...
4666442 Cardiac valve prosthesis with valve flaps of biological tissue  
A cardiac valve prosthesis comprises an annular frame and a valve sleeve with a plurality of valve flaps which are forced apart by the blood passing through the prosthesis in one direction and...
Matches 1 - 50 out of 53 1 2 >