Systems and methods for delivering a probe into tissue

  • US 20020087152A1
  • Filed: 01/04/2001
  • Published: 07/04/2002
  • Est. Priority Date: 01/04/2001
  • Status: Abandoned Application
First Claim
Patent Images

1. A system for performing a cryogenic procedure at an internal tissue region, comprising:

  • a stylet having a proximal end and a distal end for penetrating tissue;

    a dilator slidably disposed on the stylet, the dilator having a proximal end and a tapered distal end for substantially atraumatically dilating tissue, the dilator having a length that is less than a length of the stylet;

    a lock assembly on the proximal ends of the stylet and the dilator for securing the dilator axially with respect to the stylet such that a distal portion of the stylet extends beyond the distal end of the dilator;

    an introducer sheath slidably disposed on the dilator;

    the dilator being movable proximally with respect to the introducer sheath for removing the dilator from within the introducer sheath; and

    a cryogenic probe insertable into the introducer sheath when the dilator and stylet are removed from within the introducer sheath.

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