48 results about "Bypass grafting" patented technology

A system and method for exclusion of an aneurysm of an aortic arch region using a graft delivery system capable of maneuvering around an aortic arch, an aortic arch graft, and an occluder system for isolating an aneurysm while occluding one or more corresponding arteries, and with bypass of those arteries being performed using one or more selected bypass grafts. The graft may be branched or branchless. The graft delivery system has a flexible sheath that is manipulated manually with the aid of a guidance system. A hoist delivery system may also be provided. The occluder system may comprise independent occluders with one or more anchor members adjacent to one end. Alternatively, the occluders can be provided as part of the aortic arch graft, either as a built-in singular self-deploying occluder or as built-in multiple occluders. A kit is also provided containing a graft, stents, occluders, and optional delivery system.

A method and apparatus for temporarily immobilizing a local area of tissue. In particular, the present invention provides a method and apparatus for temporarily immobilizing a local area of heart tissue to thereby permit surgery on a coronary vessel in that area without significant deterioration of the pumping function of the beating heart. The local area of heart tissue is immobilized to a degree sufficient to permit minimally invasive or micro-surgery on that area of the heart. The present invention features a suction device to accomplish the immobilization. The suction device is coupled to a source of negative pressure. The suction device has a series of suction ports on one surface. Suction through the device causes suction to be maintained at the ports. The device further is shaped to conform to the surface of the heart. Thus, when the device is placed on the surface of the heart and suction is created, the suction through the ports engages the surface of the heart. The suction device is further fixed or immobilized to a stationary object, such as an operating table or a sternal or rib retractor. Thus, the local area of the heart near the suction device is temporarily fixed or immobilized relative to the stationary object while suction is maintained. In such a fashion, the coronary artery may be immobilized even though the heart itself is still beating so that a bypass graft may be performed. In addition the suction device may be used in either a conventional, open-chest environment or in a minimally-invasive environment, e.g. endoscopic.

A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing / securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing / securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO2 insufflation for enhanced maintenance of the operating cavity.

Disclosed herein are materials and methods suitable for treating and managing plaque disease, including vulnerable plaque. An implantable material comprising cells, such as but not limited to endothelial cells, and a biocompatible matrix can reduce progression or deterioration of a plaque-associated lesion situated on the interior lumen of said blood vessel. The implantable material is implanted directly on an exterior surface of a blood vessel at or adjacent or in the vicinity of the site of a lesion on an interior lumen. Alternatively, the implantable material is deposited on an exterior surface at or adjacent or in the vicinity of the site of a lesion on an interior lumen by an intraluminal delivery device which traverses or penetrates the vessel wall or by a percutaneous delivery device which enters the perivascular space. Both modes of administration can be preceded by or coincident with an imaging step. The present invention can treat hemorrhage, erosion, fissure, plaque-associated thrombosis and occlusion, rupture, displacement and / or dislodgement of a plaque lesion.