Catheter with improved spray pattern for pharmaco-mechanical thr

Details Catheter with improved spray pattern for pharmaco-mechanical thr Catheter with improved spray pattern for pharmaco-mechanical thr

1997-10-14

1999-09-28

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604269, 604508, A61M 500, A61M 2500

Patent

active

059579013

ABSTRACT:
An improved catheter includes a double spiral configuration of infusion holes around the circumference and along the length of the catheter which provides an improved lateral dispersion of a thrombolytic fluid to more completely and quickly lyse a clot through which the catheter is passing. The double spiral configuration consists of groups or sets of infusion holes, typically groups of four. The holes in each set are longitudinally spaced from each other at substantially regular intervals along the length of the catheter. Each successive hole in a given group is circumferentially spaced by an angular distance of about 90.degree. around the circumference of the catheter relative to the immediately preceding hole. Each group of holes is circumferentially spaced or offset by an angular distance of between 1.degree. and 89.degree. relative to the immediately preceding group of holes. Typically, the angular spacing between successive groups of holes is 18.degree..

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McNamara, Thomas O., Role of Thrombolysis in Peripheral Arterial Occlusion, the American Journal of Medicine, vol. 83:6-10, Aug. 24, 1987.

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