Apparatus And Methods For Aspirating Tissue

A method for aspirating bone marrow, the method comprising:

• inserting an introducer cannula of an introducer needle into bone, the introducer needle including an introducer handle that is connected to a proximal end of the introducer cannula and a removable stylet that extends through the introducer cannula from the introducer handle, a distal end of the stylet extending beyond a distal, open end of the introducer cannula and including a sharp tip to penetrate bone;
• removing the stylet from the introducer cannula;
• inserting an aspiration needle into bone marrow through the introducer cannula placed in the bone, the aspiration needle including an aspiration cannula having a proximal end and a distal end, the proximal end including an opening and the distal end extending beyond the distal end of the introducer cannula, and an aspiration handle with a luer connection attached to the proximal end of the aspiration cannula;
• aspirating bone marrow through a channel in the aspiration cannula;
• and
• removing the introducer cannula from the bone in advance of the aspiration cannula.