Cardiovascular Implants

Browse Indian Patents from 2005 by Weekly Journals

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Cardiovascular implants techniqueshelp the human race to sustain their life for a longer period. Some of the patented techniques are given below.

Patent no: 5,782,910 titled ‘Cardiovascular implants of enhanced biocompatibility’ with the abstract: Cardiovascular and other medical implants fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The cardiovascular implants may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. The cardiovascular implants include heart valves, total artificial heart implants, ventricular assist devices, vascular grafts, stents, and electrical signal carrying devices such as pacemaker and neurological leads, defibrillator leads, and the like. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any cardiovascular implant that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.

Patent no: 5,718,726 titled ‘Method of attaching heparin to, and immobilizing it on, inorganic substrate surfaces of cardiovascular implants’ with the abstract : A method of attaching heparin to, and immobilizing it on, inorganic substrate surfaces of cardiovascular implants such as cardiac valves or alloplastic vessel wall supports, comprising the following steps: activation of the inorganic substrate surface by etching, attachment, by exposure to ultraviolet light, of a photoactive benzophenone compound with an amino protective group as a spacer to the activated substrate surface, splitting off of the amino protective group by the aid of a non-aqueous piperidine solution, and covalent peptide-bonding of heparin to the free and reactive amino groups of the substrate surface by an aqueous heparin solution acting on the amino groups.

Patent no: 5,562,730 titled ‘Total artificial heart device of enhanced hemocompatibility’ with the abstract : Cardiovascular and other medical implants fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The cardiovascular implants may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. The cardiovascular implants include heart valves, total artificial heart implants, ventricular assist devices, vascular grafts, stents, electrical signal carrying devices such as pacemaker and neurological leads, defibrillator leads, and the like. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any cardiovascular implant that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.

Patent no: 5,690,670 titled Stents of enhanced biocompatibility and hemocompatibility with the abstract : Cardiovascular and other medical implants fabricated from low-modulus Ti-Nb-Zr alloys to provide enhanced biocompatibility and hemocompatibility. The cardiovascular implants may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. The cardiovascular implants include heart valves, total artificial heart implants, ventricular assist devices, vascular grafts, stents, electrical signal carrying devices such as pacemaker and neurological leads, defibrillator leads, and the like. It is contemplated that the Ti-Nb-Zr alloy can be substituted as a fabrication material for any cardiovascular implant that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.