Patent ID: 8876789
Filing Date: 2014-11-04
Classification: A61M

Abstract:
1. A withdrawal catheter for withdrawing material, comprising: at least one first tubing having a first end, a second end, and a bore therethrough, the at least one first tubing having a plurality of holes positioned in spaced apart relationship to one another between the first and second ends and positioned in communication with the bore of the at least one first tubing, the at least one first tubing having a first wall extending from the first end to the second end, the first wall having an inner surface and an outer surface defining an outer diameter of the at least one first tubing, the first wall having a substantially uniform thickness circumferentially extending from the first end to the second end; at least one second tubing having a first end, a second end, and a bore therethrough, the at least one second tubing having a plurality of holes positioned in spaced apart relationship to one another between the first and second ends of the at least one second tubing and positioned in communication with the bore of the at least one second tubing, the at least one second tubing having a second wall extending from the first end to the second end, the second wall having an outer surface and an inner surface defining an innermost diameter of the at least one second tubing, the at least one first tubing disposed within the bore of the at least one second tubing and forming a channel between the at least one first tubing and the at least one second tubing, the innermost diameter of the at least one second tubing being greater than the outer diameter of the at least one first tubing such that the positioning of the at least one first tubing relative to the at least one second tubing may be concentric or non-concentric wherein there may be intermittent contact between the outer surface of the at least one first tubing and the inner surface of the at least one second tubing along a length of the at least one second tubing, the second wall having a substantially uniform thickness circumferentially extending from the first end to the second end; the plurality of holes of the at least one first tubing and the plurality of holes of the at least one second tubing positioned in communication with one another, in communication with the bores of both of the at least one first and second tubing, and in communication with the channel for enabling the material to be withdrawn through at least one of the plurality of holes of the at least one second tubing, through at least a portion of the channel, through at least one of the plurality of holes of the at least one first tubing, and through at least a portion of the bores of the at least one first and second tubing; at least a portion of the plurality of holes of the at least one first tubing and the at least one second tubing positioned staggered and unaligned with one another; and at least one connector having at least one connector end and a bore therethrough, the at least one connector end sized for coupling to the bore of the at least one first tubing for attaching the at least one first tubing to the at least one connector for withdrawing the material out of the at least one first tubing, out of the bore of the at least one connector, and out of the withdrawal catheter.