Patent ID: 7824377

Claim:
A tissue anchoring catheter comprising: an outer catheter shaft connected to a catheter handle; a delivery sheath provided within the outer catheter shaft, the delivery sheath housing a needle; and at least one anchor operatively associated with the delivery sheath, the at least one anchor operable at the catheter handle to secure the delivery sheath to tissue for conveying biologic or chemical agents, or other therapeutic fluid from the needle to the tissue; at least one window formed in the needle, the window retaining the anchor within the needle until the needle is inserted into the tissue, the window releasing the anchor to expand within the tissue after the needle is inserted into the tissue; and a needle deployment system near the catheter handle, the needle deployment system including an adjustable depth control ring and a plunger, the needle deployment system ejecting the needle from the delivery sheath as the plunger is moved toward the depth control ring, and the depth control ring stopping movement of the plunger at a preset depth.