×

Tissue removal devices, systems and methods

  • US 9,561,129 B2
  • Filed: 09/04/2012
  • Issued: 02/07/2017
  • Est. Priority Date: 01/07/2009
  • Status: Active Grant
First Claim
Patent Images

1. A tissue removal device, comprising:

  • a housing;

    a rigid aspiration cannula extending from the housing to a distal tip outside the housing;

    a valve disposed in the housing and configured for communicating with a vacuum source, the valve comprising a valve port communicating with the aspiration cannula in a fluid-sealed manner, wherein an inside diameter of the valve port is equal to or greater than an inside diameter of the distal tip; and

    a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein;

    at the open position, the valve port is open wherein the valve defines an aspiration path through the aspiration cannula and the valve;

    at the closed position, the valve port is closed wherein the valve prevents vacuum from being applied at the distal tip;

    the valve comprises an inner cannula and an outer cannula coaxially disposed about at least a portion of the inner cannula;

    the inner cannula is configured for communicating with the vacuum source and is linearly movable by the actuator between the open position and the closed position;

    the valve port is formed in the outer cannula;

    at the open position the aspiration path passes through the outer cannula via the valve port and into the inner cannula; and

    at the closed position the inner cannula blocks the valve port.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×