Patent ID: 7837670

Claim:
A method for delivering a therapeutic agent into the prostate gland of a mammalian subject, said method comprising: (a) advancing a delivery catheter that comprises a tissue penetrating member through the urethra of said subject until said tissue penetrating member is positioned in the prostatic segment of the urethra, wherein said catheter comprises a shaft and an working member that comprises an expanding member which expands to engage the urethral wall in the prostatic segment of the urethra and a tissue penetrating member that is not a needle, wherein said working member is adapted to extend the tissue penetrating member through the urethral wall; (b) extending said tissue penetrating member through the urethral wall upon expansion of the expanding member; (c) injecting the therapeutic agent into tissue of the prostate gland via the tissue penetrating member; and (d) removing said catheter from the subject.