A needle electrode deployment shaft includes a central member and a plurality of needle electrodes. The central member has a plurality of needle advancement channels formed therein. The needle electrodes are disposed within the advancement channels and each advancement channel terminates in a ramp portion which deflects the needles radially outwardly as they are axially advanced. The ramps may be spirally or acutely configured in order to increase the distance through which the needles may be bent as they are axially advanced. Additionally, the central member may have a radially reduced distal tip in order to decrease tissue insertion forces.

A vapor delivery system and method is provided that is adapted for treating prostate tissue. The vapor delivery system includes a vapor delivery needle configured to deliver condensable vapor energy to tissue. In one method, the vapor delivery system is advanced transurethrally into the patient to access the prostate tissue. The vapor delivery system includes a generator unit and an inductive heating system to produce a high quality vapor for delivery to tissue. Methods of use are also provided.

The invention provides systems and methods for performing a minimally invasive vasectomy procedure by supplying targeted RF energy to vas deferens via a pair of probes positioned within the vas deferens under ultrasound image guidance.

Prostate treatment using fluid stream to resect prostate tissue, thereby relieving symptoms of conditions such as BPH, prostatitis, and prostatic carcinoma. A device having a fluid delivery element is positioned within a lumen of the urethra within the prostate. A fluid stream is directed outwardly from the fluid delivery element toward a wall of the urethral lumen. The fluid delivery element is moved to scan the fluid stream over the wall to remove a volume of tissue surrounding the lumen. The fluid may be combined with therapeutically active substances or with substances that increase resection efficiency. Fluid force may be adjusted to provide selective tissue resection such that soft tissue is removed while harder tissue is left undamaged. In order to gain a working space within the urethra, another fluid may be introduced to insufflate the urethra in the region of treatment.

An electrode instrument, a surgical handheld device and a production method, by means of which the quality of the aforementioned instruments can be improved. This is achieved by virtue of an electrode instrument for a surgical handheld device having an electrical conductor which is electrically insulated by an insulation in the form of flexible tubing, wherein the conductor is pressed in an electrode carrier, wherein the electrode carrier has a cross section with six pressed sides at the pressed position.

A system to treat a patient comprises a user interface that allows a physician to view an image of tissue to be treated in order to develop a treatment plan to resect tissue with a predefined removal profile. The image may comprise a plurality of images, and the planned treatment is shown on the images. The treatment probe may comprise an anchor, and the image shown on the screen may have a reference image marker shown on the screen corresponding to the anchor. The planned tissue removal profile can be displayed and scaled to the image of the target tissue of an organ such as the prostate, and the physician can adjust the treatment profile based on the scaled images to provide a treatment profile in three dimensions. The images shown on the display may comprise segmented images of the patient with treatment plan overlaid on the images.

A treatment tool includes a tubular member including an opening and a tubular member main body that has a tubular shape. The tubular member is configured to suction a tissue piece through the opening. The treatment tool includes a blade member provided on an opening edge of the opening.

A system and method for providing relative positional information of a therapeutic or diagnostic device during the treatment of urinary tract diseases and conditions.

Disclosed herein is a method of operating a medical instrument (100, 200, 400, 500). The medical instrument comprises a user interface (108) with a display. The method comprises receiving (300) an anatomical segmentation (122) identifying a location of an anatomical structure (416) and receiving (302) a target zone segmentation (124) identifying a location of a volume (416) at least partially within the anatomical segmentation. The method further comprises displaying (304) a planning graphical user interface (112) using the display. The planning graphical user interface comprises a first panel (130) configured for rendering a cross sectional view of the anatomical segmentation (136) and the target zone segmentation (138). The planning graphical user interface comprises a second panel (132) configured for displaying a first three-dimensional model (140) of the anatomical segmentation and the target zone segmentation. The planning graphical user interface further comprises a third panel (134) configured for displaying a second three-dimensional model (142) of a remaining portion of the target zone segmentation. The planning graphical user interface further comprises an ablation selector (144, 144′, 146) configured for providing an ablation zone. The method further comprises repeatedly: receiving (306) the ablation zone from the ablation selector; and updating (308) the remaining portion by removing the ablation zone from the remaining portion.

Ablation catheters and systems include coaxial catheter shafts with an inner lumen for delivering an ablative agent and an outer lumen for circulation of a cooling element about the catheter. Induction heating is used to heat a chamber and vaporize a fluid within by wrapping a coil about a ferromagnetic chamber and providing an alternating current to the coil. A magnetic field is created in the area surrounding the chamber which induces electric current flow in the chamber, heating the chamber and vaporizing the fluid inside. Positioning elements help maintain the device in the proper position with respect to the target tissue and also prevent the passage of ablative agent to normal tissues.