Medical system and method of use

A robotic medical method for resecting tissue, comprising:

• introducing a working end of a resecting system into a prostate, wherein the working end carries an image sensor, a jetting orifice for jetting a first water jet stream that carries kinetic energy capable of resecting tissue and a second water vapor jet stream that undergoes a vapor-to-liquid phase change capable of cauterizing tissue;
• propagating the first water jet stream thereby resecting tissue;
• operating a controller to monitor video images from the image sensor and comparing artifacts in the video images with a library of resecting artifacts;
• operating a controller, based on control logic, to adjust an operating parameter of the resecting system responsive to observing a resecting artifact.

A surgical method for resecting a tissue prostate capsule to treat BPH, comprising:

• introducing a mapping device in a trans-urethral approach into a prostate, and advancing at least one sensing needle with a dielectric sensor into prostate tissue to map the tissue prostate capsule in a plurality of locations;
• and
• introducing a working end of a treatment device in a trans-urethral approach into the prostate, and delivering a first water jet stream and a second water jet stream int the prostate wherein the first water jet stream comprises a high-pressure liquid that carries kinetic energy thereby resecting prostate tissue and the second water jet stream comprises water vapor that undergoes a vapor-to-liquid phase change to cauterize prostate tissue;
• wherein a controller, based on control logic, moves the working end and adjusts parameters of the first water jet stream corresponding to a map of the prostate produced by the mapping device.