| 摘要 |
Catheters for delivering drugs or other agents within a lumen, such as an artery or vein, are disclosed. In one embodiment, a catheter comprises an outer shaft (106) with a lumen extending longitudinally therethrough. An inner shaft (104) is slidably received within the outer shaft (106). A distal portion of the inner shaft comprises a plurality of grooved delivery members (108) having a non-deployed position wherein the delivery members (108) lie within and are compressed by the outer shaft, and a deployed position wherein the delivery members extend beyond the outer shaft. In the deployed position wherein the delivery members flare outward at an angle, beyond the diameter of the outer shaft to bear against a site of interest, i.e., a thrombus (101) or a vessel wall. Drugs or other agents can be conveyed to the delivery members (108) through a space between the inner and outer shafts.
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