Insertable endoscopic instrument for tissue removal
AssigneeInterscope, Inc.
InventorsCosme Furlong, Michael W. Marcoux, Richard Stephen Wisdom, William R Rebh, Jr, Evan Costa, Stephen C. Evans
Life of this patent
Estimating the term…
Abstract
An improved flexible endoscopic instrument to precisely and efficiently obtains samples of flat polyps and multiple polyps from a patient by debriding one or more polyps and retrieving the debrided polyps without having to alternate between using a separate cutting tool and a separate sample retrieving tool and may be used with an endoscope. In one aspect, the cutting tool is coupled to a flexible torque coil or torque rope that is configured to transfer rotational energy from a powered actuator through the length of the endoscope onto the cutting tool.
Claims20
An flexible endoscopic instrument insertable within a single instrument channel of a flexible endoscope, the endoscopic instrument comprising:
- a cutting assembly configured to resect material at a site within a subject, the cutting assembly including an outer cannula and an inner cannula disposed within the outer cannula, the outer cannula defining an opening through which the material to be resected enters the cutting assembly;
- a flexible outer tubing coupled to the outer cannula and configured to cause the outer cannula to rotate relative to the inner cannula, the flexible outer tubing having an outer diameter that is smaller than the instrument channel in which the flexible endoscopic instrument is insertable;
- a flexible torque component comprising one of a flexible torque coil or a flexible torque rope, the flexible torque component having a portion disposed within the flexible outer tubing, the flexible torque component having a distal end coupled to the inner cannula, the flexible torque component configured to rotate the inner cannula relative to the outer cannula to resect the material to be resected responsive to actuation of the flexible torque component;
- and
- an aspiration channel having an aspiration port configured to engage with a vacuum source, the aspiration channel partially defined by an inner wall of the inner cannula and extending from an opening defined in the inner cannula to the aspiration port.
An endoscopic instrument insertable within a single instrument channel of a flexible endoscope, the endoscopic instrument comprising:
- a cutting assembly configured to resect material at a site within a subject, the cutting assembly including an outer cannula and an inner cannula disposed within the outer cannula, the outer cannula defining an opening through which the material to be resected enters the cutting assembly;
- a flexible outer tubing coupled to the outer cannula and configured to rotate the outer cannula relative to the inner cannula, the flexible outer tubing having an outer diameter that is smaller than the instrument channel in which the endoscopic instrument is insertable;
- a flexible torque component comprising one of a flexible torque coil or a flexible torque rope, the flexible torque component having a portion disposed within the flexible outer tubing, the flexible torque component having a distal end coupled to the inner cannula, the flexible torque component configured to rotate the inner cannula relative to the outer cannula to resect the material to be resected responsive to applying torque of the flexible torque component;
- and
- an aspiration channel having an aspiration port configured to engage with a vacuum source, the aspiration channel partially defined by an inner wall of the flexible torque coil and an inner wall of the inner cannula and extending from an opening defined in the inner cannula, through the outer tubing to the aspiration port.
Dependencies are inferred from the claim text.