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US 12,667,422 B2Granted
Percutaneous retrieval system
AssigneeNorthwestern University
InventorsAhsun Riaz, Riad Salem, Abhinav Talwar
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Abstract
Provided herein are devices, systems, and methods for the percutaneous removal of solid deposits from the gallbladder or kidney.
Claims16
A method for the percutaneous removal of solid deposits from an internal organ of a subject, the method comprising:
- (a) accessing a percutaneous access tract into the internal organ;
- (b) inserting a guidewire via the percutaneous access tract, into the internal organ, and into an exit channel for the internal organ;
- (c) advancing an expandable occlusion element along the guidewire and positioning the expandable occlusion element within the exit channel;
- (d) expanding the expandable occlusion element to obstruct outflow from the internal organ through the exit channel;
- (e) inserting a sheath, into the internal organ via the percutaneous access tract;
- (f) performing lithotripsy to degrade the stones into smaller fragments;
- (g) advancing a separator through the sheath and into the internal organ;
- (h) applying a high-pressure flush from the end of the sheath and creating currents within the internal organ that carry the stones and/or fragments thereof into the sheath;
- and
- (i) retracting the separator into the distal end of the sheath, thereby trapping the stones and/or fragments thereof within the sheath.
7 more elements
A system for the percutaneous removal of solid deposits from an internal organ within a subject, the system comprising:
- (a) a guidewire;
- (b) an expandable occlusion element capable of (1) being advanced along the guidewire, (2) being positioned at a desired position along the guidewire, and (3) adopting an expanded conformation at the desired positioned along the guidewire;
- (c) a sheath comprising:
- (1) a proximal end configured to be positioned outside of the subject, (2) a distal end configured to be positioned within the internal organ, and (3) an inner lumen extending from there proximal end to the distal end;
- (d) a lithotripsy generator;
- (e) a separator element capable of (1) being advanced through the inner lumen of the sheath into the internal organ, (2) occluding the lumen of the sheath upon being retracted into the distal end of the sheath, and (3) withdrawing the contents of the inner lumen of the sheath from the subject upon being retracted through the inner lumen of the sheath.
3 more elements
Dependencies are inferred from the claim text.