Multi-lumen-catheter retractor system for a minimally-invasive, operative gastrointestinal treatment

摘要

Improved methods and devices for performing an endoscopic surgery are provided. Systems are taught for operatively treating gastrointestinal disorders endoscopically in a stable, yet dynamic operative environment, and in a minimally-invasive manner. Such systems include, for example, an endoscopic surgical suite. The surgical suite can have a reversibly-expandable retractor that expands to provide a stable, operative environment within a subject. The expansion can be asymmetric around a stabilizer subsystem to maximize space for a tool and an endoscope to each be maneuvered independently to visualize a target tissue and treat the target tissue from outside the patient in a minimally invasive manner.

主权项

1. A system for performing minimally invasive procedures in a body lumen of a patient, the system comprising:
a flexible catheter having a first lumen configured and dimensioned to receive an endoscope therethrough and a second lumen configured and dimensioned to receive a first flexible tube therethrough; a first flexible tube movable through the second lumen, the first flexible tube having a first channel extending therethrough configured and dimensioned to receive a first endoscopic tool for axial movement therein, the first flexible tube having a longitudinal axis and a tube distal portion movable to an angled position with respect to the longitudinal axis, the first flexible tube slidable axially within the second lumen; a body lumen reshaping system positioned at a distal portion of the catheter, the reshaping system including first and second flexible elements movable from a non-expanded insertion position to an expanded position forming an expanded cage to reshape the body lumen to an asymmetric shape to form an asymmetric working space, the distal portion of the first flexible tube movable within the expanded cage; and a proximal coupler to retain a proximal portion of the first and second flexible elements and a distal coupler to retain a distal portion of the first and second flexible elements, wherein the proximal and distal couplers include a lumen dimensioned to receive the endoscope therethrough when the catheter is backloaded over the endoscope.