Patent ID: 7273489

Claim:
A unit for inserting by a mini-invasive route a device for occluding a hole existing in a body wall, characterized in that it comprises: a single disk, of diameter greater than the diameter of the hole to be treated, composed of a deformable peripheral thread made of shape memory material, and of a flexible wall made of a biocompatible material connected to said thread, whereas said disk is deformable between a normal deployment state, wherein it may be pressed against said body wall and brought to cover the complete hole to be treated, while extending over said hole, and a contraction state, wherein it may be inserted into a sheath enabling to run it towards said body wall for being inserted therein, whereas the disk comprises means for removable linking thereof with a handling rod, enabling to insert said disk and to maintain it pressed against said body wall; said handling rod; at least one attachment separated from the disk, enabling to fasten said disk to said body wall, whereas each attachment comprises a zone for linking to the disk and a zone for linking to the body wall and which may be deformed in order to engage into a hollow needle; said sheath, liable to receive the disk in said contraction state of this disk and to contain said handling rod; said hollow needle; at least one catheter containing said hollow needle, this needle being made of a shape memory material and deformable between a substantially linear shape, which it adopts when inserted into the catheter, and a shape wherein its free end portion is offset laterally relative to its other end portion, a shape which it adopts when pushed outside the catheter, such offset being such that it enables said free end portion to face the zone of said body wall covered with said flexible wall of the disk and to go through said zone when the needle is pushed outside the catheter; and a control rod, engaged into the catheter and removably connected to said attachment, enabling to control the sliding of this attachment through said needle.