Patent ID: 7150738

Claim:
A method of administering a substance, comprising: inserting a catheter assembly into a biological passageway of a subject, said catheter assembly including a balloon disposed at an end portion of said catheter assembly, said balloon being configured to have a collapsed form and an expanded form, a needle capable of penetrating into tissues of a subject for administering a substance to said subject, and a hollow body in fluid communication with said needle, said hollow body being defined by a first section and a second section, wherein said first section is capable of pivotally rotating with respect to said second section in response to inflation of said balloon from said collapsed form to said expanded form, and wherein a longitudinal axis of said needle is generally parallel to a longitudinal axis of said balloon when said balloon is in said collapsed form; positioning said balloon at a desired area of said passageway; expanding said balloon so as to pivotally rotate said first section for penetrating said needle into a wall of said desired area; and supplying said substance through said hollow body of said catheter assembly to administer said substance to said desired area.