A geared continuously variable transmission (GCVT) is provided. The GCVT includes a first set of solar gears having a first solar gear and first plurality of connection components. Power enters the GCVT through the first set of solar gears. The GCVT includes a second set of solar gears having a second solar gear and second plurality of connection components. Power exits the GCVT through the second set of solar gears. Power is transmitted from the first set of solar gears to the second set of solar gears via the first plurality of connection components and the second plurality of connection components. The GCVT includes a hydraulic pump and a hydraulic motor connecting first component from the first plurality of connection components to second component from the second plurality of connection components and providing constant rotation ratio between the first component and the second component.

A medical material uses a nickel-titanium alloy wherein a polyelectrolyte has a reduced thickness while a sufficient amount of an antithrombogenic compound for production of a therapeutic effect is supported. The medical material in which a porous surface is formed on a nickel-titanium alloy to allow infiltration of a polyelectrolyte into the pores, to thereby reduce the thickness of the polyelectrolyte exposed on the surface of the nickel-titanium alloy while allowing supporting of a sufficient amount of an antithrombogenic compound due to contribution of the polyelectrolyte infiltrate.

The present invention relates to a method of manufacturing an artificial vascular graft, which comprises implanting a bioactive metal into an expanded polytetrafluoroethylene (ePTFE) surface without an interface by performing plasma etching using a bioactive metal target, and an artificial vascular graft with improved blood compatibility, which is manufactured by way of the method.

There is provided a method for decreasing leakage of matter from an object to a surrounding, said object being coated with a coating at least partially applied on the object, said coating comprising an at least partially covering layer comprising silver, said object optionally comprising area(s) without said layer, said coating comprising metal particles applied on the layer and optionally on areas without said layer, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, niobium, neodymium and platinum and wherein the amount of the metal particles is in the interval 0.01-8 μg/cm.sup.2. Advantages include that leakage of matter such as latex allergens of metal ions can be reduced while the coating is both biocompatible and antimicrobial. Further, the blood clotting can be reduced.

There is provided a method for decreasing leakage of matter from an object to a surrounding, said object being coated with a coating at least partially applied on the object, said coating comprising an at least partially covering layer comprising silver, said object optionally comprising area(s) without said layer, said coating comprising metal particles applied on the layer and optionally on areas without said layer, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, niobium, neodymium and platinum and wherein the amount of the metal particles is in the interval 0.01-8 μg/cm.sup.2. Advantages include that leakage of matter such as latex allergens of metal ions can be reduced while the coating is both biocompatible and antimicrobial. Further, the blood clotting can be reduced.

A medical material uses a nickel-titanium alloy wherein a polyelectrolyte has a reduced thickness while a sufficient amount of an antithrombogenic compound for production of a therapeutic effect is supported. The medical material in which a porous surface is formed on a nickel-titanium alloy to allow infiltration of a polyelectrolyte into the pores, to thereby reduce the thickness of the polyelectrolyte exposed on the surface of the nickel-titanium alloy while allowing supporting of a sufficient amount of an antithrombogenic compound due to contribution of the polyelectrolyte infiltrate.

The invention is related to a method for creating coating for medical implantable devices placed inside the recipient's body and having at least one surface contacting with blood, in particular, on blood vessel prostheses made of a polymeric material (polyethylene terephthalate), in order to activate the endothelization process and prevent thrombosis. For this purpose, the specified method is characterized by the alternation of stages of ion etching with spray coating.

The proposed method allows to create a discontinuous coating on a polymer vascular prosthesis made of polyethylene terephthalate, characterized by low thrombogenicity.

An implantable apparatus, including at least one corrodible zinc-containing portion, where a content range of zinc in the at least one zinc-containing portion is [30, 50) wt. % and zinc in the zinc-containing portion is an amorphous structure, or a content range of zinc in the at least one zinc-containing portion is [50, 70] wt. %, and a microscopic structure of zinc in the zinc-containing portion is at least one of an amorphous structure, a non-equiaxed structure, an ultrafine-grained structure, or an equiaxed structure with a grain size number of 7 to 14, or a content range of zinc in the at least one zinc-containing portion is (70, 100] wt. % and a microscopic structure of zinc in the zinc-containing portion is at least one of a non-equiaxed structure, an ultrafine-grained structure, or an equiaxed structure with a grain size number of 7 to 14.

Described is a device for preventing thrombosis formation on surfaces of a blood contact device. The device may first non-invasively scan the blood contact device and determines the highest risk thrombosis points. The device then, preferably starting with the highest risk location, delivers a succession of harmonic vibration signals or electromagnetic signals non-invasively so as to prevent clot formation at each stagnation high risk point of the blood contact device (e.g., harmonic resonance). This resonant vibration calibration tuning information is stored in an associated microprocessor. The signals are then delivered, based upon the stored information, in a loop from the signal generator, usually on a belt outside the patient, to each stagnation point in sequence from highest risk of thrombosis to lowest; again and again repeated. By delivering such energy to the blood contact device stagnation points, initiation of thrombosis formation is prevented, thus preventing the accumulation of thrombosis to a dangerous risk level for stroke, pulmonary embolism, and/or other blood clot induced ailments. This device may be used to prevent and/or treat blood clot, plaque, and/or calcification formation on any blood contact surfaces including living surfaces such as heart valves.

A geared continuously variable transmission (GCVT) is provided. The GCVT includes a first set of solar gears having a first solar gear and first plurality of connection components. Power enters the GCVT through the first set of solar gears. The GCVT includes a second set of solar gears having a second solar gear and second plurality of connection components. Power exits the GCVT through the second set of solar gears. Power is transmitted from the first set of solar gears to the second set of solar gears via the first plurality of connection components and the second plurality of connection components. The GCVT includes a hydraulic pump and a hydraulic motor connecting first component from the first plurality of connection components to second component from the second plurality of connection components and providing constant rotation ratio between the first component and the second component.