Patent ID: 8282574

Claim:
A biopsy device comprising: a stylet having a distal end and a proximal end, the stylet having a sample opening and an interior volume adjacent the distal end, the sample opening providing access to the interior volume, the stylet having a recovery position proximal of the distal end; a first shuttle mounted in the stylet and free to travel from the sample opening to the recovery position, the first shuttle having at least one bulkhead shaped and positioned to push a tissue sample in the first shuttle toward the proximal end of the stylet; a second shuttle separate from the first shuttle, said first shuttle being configured to move the second shuttle only after the first shuttle has moved a first distance, and configured such that after the first distance the first shuttle and the second shuttle move in tandem; and a transport subassembly coupled to the first shuttle to move the tissue sample from the sample opening toward the proximal end of the stylet.