Patent ID: 7517338

Claim:
An injection device comprising: a first catheter having a first catheter outer surface, a first catheter proximal end, a first catheter distal end and a first catheter inner surface to define a first catheter lumen extending between the first catheter proximal and distal ends; a second catheter disposed in the first catheter lumen, said second catheter having a second catheter outer surface, a second catheter proximal end, a second catheter distal end and a second catheter inner surface to define a second catheter lumen extending between the second catheter proximal and distal ends; a multiple delivery member injection device including an expandable member having a proximal wall, an opposing distal wall and a circumferential side wall connecting the proximal wall and the opposing distal wall, and a plurality of injection elements connected to the distal wall of the expandable member and an outer surface of the proximal wall of the expandable member being connected to the distal end of the second catheter to form a liquid tight seal, the expandable member being expandable to receive and hold a liquid under a positive pressure; a third catheter disposed in the second catheter lumen, said third catheter having a third catheter outer surface, a third catheter proximal end, a third catheter distal end and a third catheter inner surface to define a third catheter lumen extending between the third catheter proximal and distal ends, the distal end of the third catheter being connected to the proximal wall of the expandable member; and a plurality of filling tubes, each filling tube having a filling lumen proximal end, a filling tube distal end and a filling tube wall with an inner surface to define a filling tube lumen extending between the filling tube proximal and distal ends, the plurality of filling tubes being connected at their proximal ends to the distal end of the third catheter and the plurality of filling tubes being connected at their distal ends to the plurality of injection elements, the plurality of filling tubes to provide the therapeutic from the third catheter to the plurality of injection elements to produce a positive pressure in the plurality of injection elements, each of the plurality of injection elements to hold the positively pressurized therapeutic until activated to release the therapeutic.