| US 7,517,338 B2 | ||
| Delivery of therapeutic through multiple delivery members | ||
| Toby Freyman, Waltham, Mass. (US); Maria Palasis, Wellesley, Mass. (US); Wendy Naimark, Cambridge, Mass. (US); and William J. Shaw, Cambridge, Mass. (US) | ||
| Assigned to Boston Scientific Scimed, Inc., Maple Grove, Minn. (US) | ||
| Filed on Jan. 21, 2005, as Appl. No. 11/38,241. | ||
| Prior Publication US 2006/0195059 A1, Aug. 31, 2006 | ||
| Int. Cl. A61M 25/00 (2006.01); A61M 29/00 (2006.01) | ||
| U.S. Cl. 604—264 [604/96.01] | 35 Claims |
| 1. 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.
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