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Tissue remover and method

  • US 6,669,685 B1
  • Filed: 11/15/2000
  • Issued: 12/30/2003
  • Est. Priority Date: 11/06/1997
  • Status: Expired due to Term
First Claim
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1. A tissue remover comprising:

  • an aspiration cannula having a cannula proximal end and a cannula distal end, the cannula being provided with a cannula lumen in communication with the cannula distal end, the cannula distal end being adapted to receive soft or hard tissue therein and into the cannula lumen;

    a fluid and energy guide disposed within the cannula and longitudinally extending within the cannula lumen, the fluid and energy guide transporting air and fluid to a distal end of the fluid and energy guide and being adapted to generate atomized fluid particles in an interaction zone located in close proximity to the distal end of the fluid and energy guide near the cannula distal end, the fluid and energy guide further providing electromagnetic energy from an energy source to an electromagnetic energy transmitting means operatively mounted within the fluid and energy guide, the electromagnetic energy having a wavelength which is substantially absorbed by a portion of atomized fluid particles in the interaction zone, the absorption of the electromagnetic energy by the portion of atomized fluid particles causing the portion of atomized fluid particles to expand and impart disruptive cutting forces onto soft or hard tissue in close proximity with the cannula distal end; and

    a source of aspiration connected to a proximal end of the cannula, the source of aspiration being configured to aspirate, during the transporting of the air and the fluid and during the transmitting of the electromagnetic energy, air and fluid from the fluid and energy guide, and soft or hard tissue within the cannula, through the cannula distal end and the cannula.

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