Surgical device and methods
AssigneeAulea Medical, Inc.
InventorsGeorge Chao-chih Hsu, Steve Duddy, George Surjan
Life of this patent
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Abstract
Apparatus for performing electrosurgical tissue resections, such as transurethral resection of the include motor-driven cutters which drive both a shaft of the cutter and a cutter electrode, either or selectively. The systems often include controllers which coordinate movements of the shaft, electrodes, and other external components. The apparatus may include integrated imaging and light illumination systems. The apparatus may include integrated tissue filter and collection traps.
Claims5
A method for resecting tissue from a tissue bed, said method comprising:
- engaging a tissue resection element on a shaft against target tissue in the tissue bed, leaving a cavity in the tissue bed;
- delivering hexaminolevulinate HCl to exposed tissue in the cavity;
- simultaneously delivering blue (ultraviolet) light and white light from illumination sources on the shaft to the exposed tissue;
- and
- determining if any of the exposed cells appear pink under the combination of blue (ultraviolet) light and white light delivered from illumination sources on the shaft to the exposed tissue.
An imaging and resecting device, comprising:
- a handle coupled to an elongated shaft extending about a longitudinal axis to a working end;
- a moveable electrode carried at the working end;
- a motor configured to move the electrode to resect tissue;
- an image sensor carried at the working end with field of view adapted for viewing the moveable electrode during use;
- a first LED carried at the working end having wavelength of a white light for illuminating a working space;
- and
- a second LED carried at the working end having blue (ultraviolet) light wavelengths for identifying cancerous tissue.
A method for collecting tissue samples from a tissue resection fluid waste stream, said method comprising:
- engaging a resection electrode against tissue with simultaneously perfusing and aspirating the resection fluid at the same flow rates;
- extending the resection electrode distally from a sheath;
- energizing the electrode;
- retracting the energized electrode proximally to resect tissue;
- sensing when the retraction and/or energization has stopped;
- and
- adjusting the perfusion and/or aspiration rates of the resection fluid to enhance aspiration of tissue in the aspiration fluid through an outflow channel.
Dependencies are inferred from the claim text.