Percutaneous lead having radially adjustable electrode
Adjustable isodiametric atrial-ventricular pervenous lead
Monophasic action potential recording lead
Intraventricular multielectrode cardial mapping probe and method for using same
Heatable dilation catheter
Tubular device for the treatment of hollow organs with electric current
Catheter with radiofrequency heating applicator
ApplicationNo. 893825 filed on 07/11/1997
US Classes:606/22, With coolant supply606/20Cyrogenic application
ExaminersPrimary: Peffley, Michael
Assistant: Gibson, Randy W.
Attorney, Agent or Firm
International ClassA61B 017/36
AbstractA cryogenic catheter includes a flexible member having an elongate, thermally-transmissive region and a cryogenic fluid path through the flexible member to the thermally-transmissive region. The thermally-transmissive region can be deformable from a linear configuration to an arcuate configuration and can include multiple thermally-transmissive elements having a first side exposed to the cryogenic fluid path and a second side exposed to points exterior to the flexible member. The thermally-transmissive elements can be rigid or flexible longitudinal strips. Alternatively, annular, cylindrical, or wedge-shaped metallic structures disposed in a spaced-apart relationship can define the thermally-transmissive region. In other embodiments the thermally-transmissive region is defined by a helical coil that is at least partially embedded in the flexible member. The helical coil can also define at least a portion of the cryogenic fluid path through the flexible member and include a gas expansion or boiling chamber.