Device to deploy a resilient sleeve to constrict on body tissue

A lung resection device for deploying a resilient sleeve around a lung portion, the device comprising:

• a. a loading component having a proximal end and a distal end, the loading component comprising:
• i. a first cylinder having a plurality of finger tabs at a distal end and a rotatable retractor at a proximal end, the first cylinder configured so as to permit the rotatable retractor to rotate relative to the finger tabs and to permit both said rotatable retractor and said finger tabs to move axially together, said rotatable retractor having a plurality of engagement tabs on the interior surface thereof and a gripping surface on the exterior surface thereof, and
• ii. a second cylinder positioned concentrically within the first cylinder, the second cylinder having a plurality of finger tab guides at a distal end to guide axial movement of the finger tabs when the rotatable retractor is rotated about said second cylinder, said second cylinder also having helical threads on an external surface thereof in which the engagement tabs of said first cylinder reside, the helical threads configured to guide said rotatable retractor to move proximally and to radially bias said finger tabs away from Axis 126 when said rotatable retractor is rotated, said second cylinder further having securing recesses located at a proximal end of the helical threads that accept therein said engagement tabs when said engagement tabs reach the proximal end of said helical threads to limit relative rotation between said first and second cylinders, said second cylinder also having a plurality of locking grooves of helical shape positioned on an internal surface thereof that extend distally from a proximal end thereof, said second cylinder further having a plurality of release channels located on the internal surface thereof and extending between a distal end of the locking grooves and the proximal end of said second cylinder, said second cylinder further having a plurality of compression tabs on the internal surface of the distal end thereof;
• and
• b. an introducing component configured to cooperate with the loading component, the introducing component comprising:
• i. a retaining cylinder configured to hold the resilient sleeve in an expanded state at a distal end of the retaining cylinder, said retaining cylinder having a cylindrical shape at a proximal end, the distal and proximal ends separated by a plurality of extensions radially spaced from each other, said retaining cylinder further having a channel tab located on each of the extensions, each channel tab configured to reside and move within the locking grooves and the release channels of the second cylinder of the loading component,
• ii. a sleeve releaser configured to release the resilient sleeve from the expanded state on to the portion of body tissue, the sleeve releaser comprising:
• (a) an actuating cylinder positioned concentrically external to the retaining cylinder, the actuating cylinder having a locking tab at a proximal end thereof, said actuating cylinder also having a plurality of slots at a mid-portion thereof through which the channel tabs of said retaining cylinder protrude thereby preventing relative rotation between said actuating cylinder and said retaining cylinder but permitting relative axial movement therebetween,
• (b) a locking cylinder located concentrically internal to the retaining cylinder, the locking cylinder having longitudinally oriented channels located on a mid portion of an external surface thereof in which the extensions of the retaining cylinder reside thereby limiting relative rotation between said locking cylinder and said retaining cylinder but permitting relative axial movement therebetween, said locking cylinder having a lock at a mid-portion thereof that is configured to mate with the locking tab of the actuating cylinder, and
• (c) a sleeve guide comprising resilient material spanning a distal end of the actuating cylinder and a distal end of the locking cylinder, the sleeve guide configured so as to encase the distal end of the retaining cylinder when said retaining cylinder is extended in a distal most position;
• and
• iii. a handle releasably connected to the retaining cylinder, the handle having a safety release button configured to release the lock on the locking cylinder from the locking tab on the actuating cylinder;
• c. wherein, upon rotation of the rotatable retractor, the channel tabs move within the locking grooves, which causes the loading component to move proximally, which in turn causes the compression tabs to move the actuating cylinder proximally relative to the retaining cylinder, which causes the locking cylinder to move distally, thereby extending said retaining cylinder to its distal most position and engaging the locking tab with the lock and preventing further relative axial movement between said actuating cylinder, locking cylinder, and retaining cylinder, so that the resilient sleeve is positioned for deployment on to the lung tissue.