Minimally invasive methods and apparatus for target-tissue excision
AssigneePrecision Thoracic, LLC
InventorsEdward M. Boyle, Jr., Kenneth Allan Beres, Richard Fischel
Life of this patent
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Abstract
Methods and apparatus are provided to facilitate the minimally invasive removal of tissue and to facilitate the direct approach to anesthetizing a body wall of a patient. A pull-type cutting device also is disclosed to introduce an opening into the body wall to provide access for intra-chest surgical interventions, for example a minimally invasive biopsy technique as also described for excising target tissue from within a patient, including a nodule from within the patient's lung.
Claims18
A method of excising a target tissue, comprising:
- dilating a tissue tract that extends from an opening in a body wall toward a target tissue;
- advancing a catch wire through said tissue tract until an end of the catch wire is positioned adjacent or beyond the target tissue;
- anchoring the catch wire from a location adjacent the target tissue;
- advancing an excision device toward the target tissue, over the catch wire and against a counterforce applied by tensioning the catch wire;
- and
- applying suction to said excision device in order to draw suction within a pleural space of a patient effective to maintain a negative pressure therein in order to prevent collapse of the patient's lung while excising said target tissue.
A method of excising a target tissue, comprising:
- tensioning a catch wire from a location adjacent a target tissue within a patient;
- dilating a tissue tract within the patient that extends toward the target tissue;
- advancing an excision device through the tissue tract over the catch wire and against a counterforce applied by tensioning the catch wire, thereby coring tissue surrounding the target tissue;
- withdrawing the excision device having the target tissue disposed therein through the tissue tract;
- applying suction to said excision device in order to draw suction within a pleural space of the patient effective to maintain a negative pressure therein in order to prevent collapse of the lung while coring said target tissue.
An apparatus for excising a target tissue, the apparatus comprising:
- a catch wire with a tissue anchor at an end thereof, the catch wire configured to be tensioned by engaging the tissue anchor against the target tissue and pulling the catch wire away from the target tissue;
- and
- an excision device comprising a hollow sleeve configured and dimensioned to be advanced over the catch wire,
- wherein the excision device is configured such that when suction is applied to the excision device, suction is drawn within a pleural space of a patient effective to maintain a negative pressure therein in order to prevent collapse of the patient's lung while excising said target tissue.
Dependencies are inferred from the claim text.