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US 2020/0268404 A1Published application
Apparatus And Method For Removal Of Intrauterine Fibroid Formations
AssigneeCaldera Medical, Inc.
InventorsMike Collinson, Manish Vaishya, Jose Luis Charvet
Life of this patent
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Abstract
A drive system for a tissue resection device that drives a cutting tube in a rotating and reciprocating motion simultaneously. The cutting tube moves within an outer tube having a window at a distal end thereof. When activation of the device ceases, the device remains powered until the cutting tube assumes an extended position, thereby closing the window.
Claims20
A reciprocating drive system for a cutting tube comprising:
- a power source;
- a motor connected to the power source and having a drive shaft extending therefrom;
- a first spur gear attached to the drive shaft;
- a worm connected to the drive shaft;
- a cutting tube adjacent the drive shaft and parallel thereto;
- a second spur gear surrounding the cutting tube and meshed with the first spur gear;
- a worm gear positioned under the worm and meshed therewith such that rotation of the worm around a first axis results in rotation of the worm gear around a second axis perpendicular to the first axis;
- and,
- a crank attached at one end to the worm gear and at a second end to a collar attached to the cutting tube;
- wherein rotation of the drive shaft causes rotation of the cutting tube via the first and second spur gears and simultaneously causes reciprocating translation of the cutting tube along a longitudinal axis thereof.
7 more elements
A method of resecting tissue comprising:
- introducing a shaft of a tissue resection device into a target area, the shaft having a closed distal end, a first lumen extending through the shaft and ending proximal the distal end, the lumen carrying a cutting tube therein, the cutting tube attached to a drive system that simultaneously rotates and reciprocates the cutting tube within the shaft;
- drawing tissue to be resected into a window formed in the side of the shaft by applying suction to a second lumen that extends through the cutting tube;
- and,
- resecting the tissue by allowing the suction to hold the tissue in the window as the cutting tube translates from a retracted position in which the window is unobstructed to an extended position in which the cutting tube blocks the window, the tissue being cut by relative movement between a distal end of the cutting tube and an edge of the window.
1 more element
A tissue resection device comprising:
- a power source;
- a single motor connected to the power source;
- an outer tube having a first lumen, a closed distal end, and a window through a sidewall thereof leading to the lumen, the window being located proximal of the closed distal end;
- and,
- an inner tube within the first lumen and having a second lumen extending between an open distal end and an open proximal end, wherein the open proximal end is connected to a suction source;
- wherein the inner tube is connected to the motor such that when the single motor receives current from the power source, the inner tube rotates and reciprocates simultaneously within the outer tube.
3 more elements
Dependencies are inferred from the claim text.