[특허]Cardiac valve procedure methods and devices

[미국특허] Cardiac valve procedure methods and devices 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-001/267 A61F-002/06
출원번호	US-0115064 (2005-04-26)
등록번호	US-8221315 (2012-07-17)
발명자 / 주소	Lambrecht, Gregory H. Liddicoat, John Moore, Robert Kevin
출원인 / 주소	Medtronic, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 95

초록 ▼

The present invention discloses devices and methods for performing intravascular procedures with out cardiac bypass. The devices include various embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have one or more cannulae which provide access for surgical tools for effecting repair of the cardiac valves. A cannula may have filters of various configurations encircling the distal region of the cannula, which prevent embolitic material from entering the coronary arteries and aorta. The temporary valve devices may also have one or more cannulae which guide the insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel. In one embodiment, the temporary valve is a disc of flexible, porous, material that acts to filter blood passing therethrough. A set of valve leaflets extend peripherally from the disc. These leaflets can alternately collapse to prevent blood flow through the valve and extend to permit flow. The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. In one embodiment, the prosthetic valves have at least one substantially rigid strut, at least two expandable fixation rings located about the circumference of the base of the apex of the valve, and one or more commissures and leaflets. The prosthetic valves are introduced into the vascular system a compressed state, advanced to the site of implantation, expanded and secured to the vessel wall.

대표청구항 ▼

1. A method for performing an operation on a cardiac valve of a heart while the heart is beating, comprising the steps of: a) placing at least one temporary valve in a flow path of a blood vessel downstream from said cardiac valve, said temporary valve being operative to effect greater antegrade flow than retrograde flow through said vessel;b) placing at least one temporary filter in said flowpath downstream from said cardiac valve and within one of the ascending aortia and aortic arch of a patient, said filter being operative to restrict the passage of emboli while allowing blood to flow through said vessel; andc) resecting at least a portion of the cardiac valve with the temporary valve and temporary filter as positioned within said flowpath. 2. The method of claim 1, wherein the temporary filter is positioned within the ascending aorta between the coronary arteries and brachiocephalic artery. 3. The method of claim 2, wherein the temporary valve and temporary filter are provided as a combination device. 4. The method of claim 2, wherein the temporary valve is provided as an independent device from the temporary filter.

이 특허에 인용된 특허 (95) 인용/피인용 타임라인 분석

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[미국특허] Cardiac valve procedure methods and devices 원문보기

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[미국특허] Cardiac valve procedure methods and devices 원문보기

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