Patent ID: 8764679

Claim:
A method of controlling a biopsy device to clear a tissue sample disposed within the biopsy device, the biopsy device comprising an open leak path, a cutting cannula and a tissue receiving cannula, the tissue receiving cannula defining a tissue receiving opening adjacent a closed distal end thereof and a tissue receiving cannula lumen and having a cutting board distal of the tissue receiving opening, the cutting cannula defining an open distal end and a cutter lumen, the cutting cannula being slideably disposed within the tissue receiving cannula, the leak path being in fluid communication with the tissue receiving cannula lumen and atmosphere, the method comprising: applying vacuum through a proximal end of the cutter lumen; retracting the cutting cannula proximally from the cutting board; and drawing air into the biopsy device through the leak path and into a proximal end of the tissue receiving cannula to relieve a vacuum formed distal of the tissue sample, wherein the open leak path is continuously open.