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Quick cycle biopsy system

  • US 8,702,621 B2
  • Filed: 04/29/2011
  • Issued: 04/22/2014
  • Est. Priority Date: 01/31/2005
  • Status: Active Grant
First Claim
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1. A biopsy apparatus, comprising:

  • a housing;

    a cannula coupled to the housing and having a lumen, a proximal portion, a closed distal end, and an orifice located on a circumferential surface of the cannula, the orifice being configured to receive a tissue sample into the lumen of the cannula;

    a cutting sheath coaxially disposed with the cannula, the cutting sheath being configured to be movable relative to the cannula to selectively cover the orifice;

    a pressure generating device positioned in the housing and coupled to the proximal portion of the cannula, the pressure generating device configured to selectively generate each of a positive pressure and a negative pressure; and

    a valve positioned in the housing and interposed between the cannula and the pressure generating device, the valve being configured such that a controlled flow of a fluid between the lumen of the cannula and the pressure generating device at each of the positive pressure and the negative pressure must pass through the valve; and

    an actuator configured to closed the valve to build-up each of a selected one of the positive pressure and the negative pressure in the pressure generating device to a pressure level desired by an operator; and

    an electronic system control board configured to control the actuator'"'"'s closing of the valve.

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