| 主权项 |
1. An intravascular device to prevent a particle in the aorta from passing into a second blood vessel, said device comprising:
a. a primary frame comprising:
i. an elongated wire having a first end and a second end,ii. two or more supporting elements, each of said supporting elements attached to said first end of said wire, andiii. at least one expanding element attached to said wire between said first end and said second end and configured to reversibly extend away from said wire, b. a filter comprising:
i. a distal end and a proximal end, andii. two or more leaflets, each of said leaflets comprising a first attachment portion, a second attachment portion, and a filter material having pores which are both large enough to allow blood to pass through and small enough to prevent a particle from passing through said filter,wherein said supporting elements are attached to said first attachment portion of said leaflets and define the distal end of said filter, said second end of said wire is attached to said second attachment portion of said leaflets and define said proximal end of said filter, said two or more leaflets are configured to overlap with an adjacent leaflet to form a continuous filter surface, and said expanding element is configured to contact and support said filter upon expansion; such that when said intravascular device is deployed in an aortic arch, said elongated wire contacts a superior surface of said aortic arch, said distal end of said filter expands to fill the aorta and said proximal end of said filter converges to an apex, thereby preventing the bypass of fluid around said filter material and preventing a particle in the aorta from passing into a second blood vessel. |
