Heart occlusion devices

摘要

The present invention is specifically directed to a heart occlusion device with a self-centering mechanism. The heart occlusion device includes two separate uniquely shaped wires 12, 14, each forming shapes that mirror the respective wire's shapes. Each wire forms half-discs or quarter-discs that together form a distal disc and a proximal disc. In other versions, the device includes four separate wires, each mirroring its neighboring wire and forming a proximal and a distal quarter-disc. In the versions with four wires, the quarter-discs of each wire together form proximal and distal discs. The distal disc and proximal disc are separated by a self-centering waist. The proximal disc is attached to a hub comprising a screw mechanism. A similar hub is optional on the distal disc. The discs further include coverings which form a sealant to occlude an aperture in a tissue. The wires forming the discs have a shape-memory capability such that they can be collapsed and distorted in a catheter during delivery but resume and maintain their intended shape after delivery.

主权项

1. A device for occluding an aperture in tissue comprising:
a. a first flexible wire and a second flexible wire, wherein each of the first and second wires is comprised of memory wire having a shape memory property, and wherein each of the first and second wires is shaped into a half-disc and a generally semi-circular form, such that the half-disc of the first wire opposes the half-disc of the second wire to form a first disc and the semicircular form of the first wire opposes the semicircular form of the second wire to form a second disc, wherein further each of the first and second discs is separated by a waist that configures the device to be self-centering, the waist comprised of two sections of the first wire and two sections of the second wire; and b. a sealed covering over each of the first and second discs, wherein the covering provides a seal to occlude the aperture.