Patent ID: 8226661
Filing Date: 2012-07-24
Classification: A61N

Abstract:
1. A therapeutic device insertion device, comprising: a piston slidably contained in an inner chamber to allow movement of the piston from a first end to a second end of the inner chamber, said second end including a piston stop configured to limit motion of the piston, said piston including a momentum transfer member extending toward the second end and able to extend through said piston stop; a first vacuum operatively associated with the inner chamber at the first end providing a first pressure to the inner chamber at a back side of the piston proximate to the first end; a second vacuum operatively associated with a first end of an axial chamber and providing a second pressure within the axial chamber, said second vacuum being operatively associated with the first end of the axial chamber and the second end of the inner chamber and providing the second pressure at a front side of the piston opposite the back side; a pressure control system capable of independently controlling vacuum pressures supplied by each of the first and second vacuums; an inserter slidably contained in a housing proximate the second end opposite the piston stop, said inserter including at least one aperture extending along a transverse axis of the inserter to allow fluid communication between the axial chamber and a tip of the inserter and the second pressure sufficient to retain a therapeutic device at the tip, said inserter including at least one aperture extending along the transverse axis of the inserter which also allows fluid communication between the second end of the inner chamber, the axial chamber and a tip of the inserter, and said housing including at least one vent oriented to allow fluid communication with the second end of the inner chamber when the inserter is in an unbiased position; and a position bias member operatively associated with the inserter and configured to bias the inserter toward the piston stop in a biased position.