US 2025/0359914 A1 · DISTAL TIP STRUCTURE FOR CRYOABLATION PROBE

Abstract

In an embodiment, a cryoablation probe includes a shaft, where the shaft has a supply tube, a return tube surrounding the supply tube, an insulated portion, wherein a vacuum circuit runs through the insulated portion between the return tube and an insulating shaft, and an expansion chamber extending distally to the insulated portion. The probe further includes a distal tip configured to seal a distal end of the return tube. The distal tip has a tip portion extending distally from the distal end of the return tube and a plug portion configured to be inserted inside of the return tube. The probe includes a compressive element surrounding the return tube and the plug portion of the distal tip, configured to seal the distal tip to the return tube.

Claims20

Dependent claims

A cryoablation probe comprising:

a working fluid circuit;
a vacuum circuit;
and
a shaft, the shaft comprising:
a supply tube;
a return tube surrounding the supply tube;
an insulated portion, wherein the vacuum circuit runs through the insulated portion between the return tube and an insulating shaft;
and
an expansion chamber extending distally to the insulated portion, wherein fluid from the working fluid circuit travels through the supply tube and expands in the expansion chamber;
a distal tip configured to seal a distal end of the return tube, the distal tip comprising:
a tip portion extending distally from the distal end of the return tube;
a plug portion configured to be inserted inside of the return tube;
and
a compressive element surrounding the return tube and the plug portion of the distal tip, configured to seal the distal tip to the return tube.

11 more elements

Dependencies are inferred from the claim text.

Distal tip structure for cryoablation probe

Life of this patent

Distal tip structure for cryoablation probe

Life of this patent

Abstract

Claims20