초록 ▼

A catheter extending from a distal end which, when in an operative position is inserted within a body of a patient, to a proximal end, the catheter comprising a charge holding cavity to which a therapeutic compound is to be supplied and a wall including inner and outer portions, an inner surface of

A catheter extending from a distal end which, when in an operative position is inserted within a body of a patient, to a proximal end, the catheter comprising a charge holding cavity to which a therapeutic compound is to be supplied and a wall including inner and outer portions, an inner surface of the inner portion surrounding the charge holding cavity with an outer portion surrounding at least a portion of an outer surface of the inner portion, wherein the inner portion is formed so that a first diffusion rate of the therapeutic compound therethrough is different from a second diffusion rate through the outer portion.

대표청구항 ▼

What is claimed is: 1. A method of making a catheter that comprises a multi-component wall comprising inner and outer portions, said method comprising the steps of:forming said inner wall portion, including at least one lumen extending therethrough; andforming said outer wall portion surrounding at

What is claimed is: 1. A method of making a catheter that comprises a multi-component wall comprising inner and outer portions, said method comprising the steps of:forming said inner wall portion, including at least one lumen extending therethrough; andforming said outer wall portion surrounding at least a portion of the inner wall portion and disposed on an outer surface of the inner wall portion,wherein the outer wall portion is formed so that a diffusion rate through the outer wall portion of a selected agent to be supplied to the lumen is different from a diffusion rate of the agent through the inner wall portion, and wherein a first material of which the outer wall portion is formed is harder than a second material of which the inner wall portion is formed.