MULTI-FUNCTIONAL OCCLUDER
The present invention is related to an occlusion device for occluding an opening in a body tissue and a method of deploying the said occlusion device to the site of defect. The construction of the occlusion device comprising two discs, that are centrally connected by a central portion and retention screws, is such that it offers the major advantage of haemodynamic adjustment providing a better-fit to the size of the defect.
1 . A multi-functional occlusion device comprising of:
a flexible proximal disc preferably a high-pressure disc and a flexible distal disc preferably a low-pressure disc;
a septum;
retention screws on the outer side of said proximal and distal discs; and
a central geometrically shaped connector section;
wherein the said proximal disc and distal disc are of uniform size, and straddle the said septum to provide stability on opposite sides of a defect; and
the said central geometrically shaped connector section is cone shaped, and provides hemodynamic adjustment of the said proximal disc and distal disc.
2 . The multi-functional occlusion device according to claim 1 , wherein the said proximal disc and distal disc function as high-pressure disc and low-pressure disc, respectively, in the ventricular and arterial sections wherein the pressure gradient is high.
3 . The multi-functional occlusion device according to claim 1 , wherein the retention screws present on the outer side of the said discs enable deployment through trans-venous (antegrade) or trans-arterial (retrograde) approach.
4 . The multi-functional occlusion device according to claim 1 , wherein the central geometrically shaped connector section connects the said proximal disc and distal disc to maintain the high-pressure disc in the high-pressure chamber of the heart and the low-pressure disc in the low-pressure chamber of the heart, and provides hemodynamic adjustment.
5 . The multi-functional occlusion device according to claims 1 and 4 , wherein the central geometrically shaped connector section that connects the said proximal disc and distal disc, has a variable size and length, to enable a tight fit depending on the defect size.
6 . The multi-functional occlusion device according to claim 1 , wherein the device may or may not include a membrane.
7 . A method for occluding an opening in a body tissue with the multi-functional occlusion device of claims 1 - 6 , comprising of deployment of the said multi-functional occlusion device through a smaller guide catheter or delivery sheath from an inner member at the opening in the body tissue, through trans-venous (antegrade) or trans-arterial (retrograde) approach.
8 . (canceled)
9 . The method according to claim 7 , wherein the antegrade approach of forming an arterio-venous looping can be used for the closure of defects such as left to right shunts, fistulas and para-valvular leaks.
10 . The method according to claim 7 , wherein the retrograde approach can be used for the closure of defects such as Pm VSDs, CAVF, SAVF and the like.