ROTARY INSTRUMENTS AND METHODS FOR INTRAUTERINE TISSUE RESECTION
A compact multi-lumened hysteroscope, a single-use tissue resector, and a medical system employing the same for diagnosis and therapeutic treatment of uterine tissue, such as polyps and fibroids.
1 . A single-use uterine tissue resector, comprising:
a handle;
an outer cutting tube having a proximal portion and a distal portion;
an inner cutting tube concentrically positioned and rotatable within a lumen of the outer cutting tube;
a motor positioned within the handle and coupled to a proximal end of the inner cutting tube, wherein upon activation of the motor, the motor rotates the inner cutting tube relative to the outer cutting tube; and
a sealed cylinder positioned within the handle near the proximal portion of the outer cutting tube, the sealed cylinder comprising a port configured to be connected to a vacuum line so as to apply a negative pressure within the lumen.
2 . A hysteroscope, comprising:
a proximal body from which a multi-lumened elongated distal outer tube extends;
an optical lumen positioned through the proximal body and the distal outer tube having a fluid-sealed distal end and a proximal optical output;
a light transmission lumen positioned through the proximal body and the distal outer tube having a fluid-sealed distal end and a proximal light post configured for attachment to a light source;
a working lumen positioned through the proximal body and the distal outer tube having an open distal end and an open proximal end and configured to receive a medical instrument inserted therethrough; and
a first irrigation lumen positioned through the proximal body and the distal outer tube having an open distal end and a proximal valve.
3 . A method of performing a medical procedure, comprising:
providing a multi-lumen hysteroscope comprising an optical lumen, a light transmission lumen, a working lumen, and an irrigation lumen;
inserting the multi-lumen hysteroscope through a body cavity;
irrigating the body cavity using the irrigation lumen;
inserting a medical tool through the working lumen and into the body cavity;
transmitting light through the light transmission lumen;
performing a medical procedure with the medical tool;
removing the medical tool from the working lumen; and
removing the multi-lumen hysteroscope from the body cavity.
4 . The method of claim 3 , wherein the medical tool comprises a tissue resector.
5 . The method of claim 4 , wherein the tissue resector comprises:
a handle;
an outer cutting tube having a proximal portion and a distal portion;
an inner cutting tube concentrically positioned and rotatable within a lumen of the outer cutting tube;
a motor positioned within the handle and coupled to a proximal end of the inner cutting tube, wherein upon activation of the motor, the motor rotates the inner cutting tube relative to the outer cutting tube; and
a sealed cylinder positioned within the handle near the proximal portion of the outer cutting tube, the sealed cylinder comprising a port configured to be connected to a vacuum line so as to apply a negative pressure within the lumen.