Abstract: Apparatus and methods for delivering particles to a target region in a patient's body. The apparatus includes a hub and a catheter having a proximal end coupled to and in fluid communication with the hub. The distal end of the catheter is inserted into the target region. The apparatus also includes: means for directing substrate to the target region, the means being coupled to the hub and in fluid communication with the catheter; a pressure sensor for measuring a pressure of the substrate and generating a signal commensurate with the pressure; and a pressure display for displaying the pressure in response to the signal.

Abstract: Devices for treating body tissue. The device includes: an elongated cylindrical guide portion having a distal end and a proximal end; and one or more heat generators securely attached to the elongated guide portion. The heat generators are operative to inductively generate heat energy in response to an electromagnetic field externally applied thereto. One or more of the heat generators are disposed near target tissue so that the heat energy generated by the heat generators is used to treat the target tissue during operation.

Abstract: Apparatus and methods for treating body tissue by heat energy. The apparatus includes: a coil for transmitting an alternating electrical current therethrough to generate an alternating electromagnetic field that is capable of exciting material positioned in the body, the material being operative to inductively generate the heat energy in response to the electromagnetic field; means for measuring an amplitude of the current; and means for mapping the amplitude into a temperature of the magnetic material.