Devices and methods for treatment of tissue

An imaging and therapeutic delivery system comprising:

• a shaft having a distal end and a longitudinal axis, the distal end of the shaft being selectively deflectable between a first position parallel to the longitudinal axis and a second position at an angle relative to the longitudinal axis;
• a plurality of radiofrequency (RF) ablation needles reciprocatably coupled to the shaft and configured to extend laterally away from the longitudinal axis of the shaft, one or more of the RF ablation needles having a tissue-penetrating tip at distal ends thereof;
• and
• an ultrasonic imaging array carried by the distal end of the shaft, wherein the distal end of the shaft is selectively deflectable to the second position to deflect the ultrasonic imaging array away from the plurality of RF ablation needles.

An imaging and therapeutic delivery system comprising:

• a shaft having a distal end and a longitudinal axis, the distal end of the shaft being selectively deflectable between a first position parallel to the longitudinal axis and a second position at an angle relative to the longitudinal axis;
• a plurality of radiofrequency (RF) ablation needles reciprocatable relative to the shaft and configured to extend laterally away from the longitudinal axis of the shaft, one or more of the RF ablation needles having a tissue-penetrating tip at distal ends thereof;
• and
• an ultrasonic imaging array carried by the distal end of the shaft, wherein the distal end of the shaft is selectively deflectable to the second position to deflect the ultrasonic imaging array to face a distally forward direction.

An imaging and therapeutic delivery system comprising:

• a shaft having a distal end and a longitudinal axis, the distal end of the shaft being selectively deflectable between a first position parallel to the longitudinal axis and a second position at an angle relative to the longitudinal axis;
• a plurality of radiofrequency (RF) ablation needles reciprocatably coupled to the shaft, one or more of the RF ablation needles being configured to extend in a linear path before diverging laterally outward relative to the shaft, and one or more of the RF ablation needles having a tissue-penetrating tip at distal ends thereof;
• and
• an ultrasonic imaging array carried by the distal end of the shaft, wherein the distal end of the shaft is selectively deflectable to the second position to deflect the ultrasonic imaging array.