Claims
- 1. A device to perform a cryoablation procedure, comprising:
an ablation catheter, including:
an inlet lumen; a balloon coupled to a distal end of the inlet lumen; and an outlet lumen coupled to the balloon; a source of working fluid, the source of working fluid having an outlet coupled to the inlet lumen and an inlet coupled to the outlet lumen; an in-line gas sensor coupled to the inlet lumen or the outlet lumen to detect the presence of gases in the working fluid.
- 2. The device of claim 1, wherein the sensor is selected from the group consisting of: oxymetry sensors, polargraphic sensors, optical sensors, and similar sensors.
- 3. The device of claim 1, further comprising a patient sensor coupled to the patient for measuring a characteristic of gas in a blood vessel of the patient.
- 4. The device of claim 3, wherein the sensor is selected from the group consisting of: respired gas sensors, oxymetry sensors, and similar sensors.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of co-pending U.S. patent application Ser. No. 10/200,028, filed Jul. 18, 2002, entitled “Preparation of Working Fluid for Use in Cryotherapies”, which is a continuation-in-part of the following co-pending U.S. patent application Ser. No. 09/787,599, filed Mar. 21, 2001, entitled “Method and Device for Performing Cooling-or Cryo-Therapies for, e.g., Angioplasty with Reduced Restenosis or Pulmonary Vein Cell Necrosis to Inhibit Atrial Fibrillation”; Ser. No. 09/516,319, filed Mar. 1, 2000, entitled “Method and Device for Performing Cooling-or Cryo-Therapies for, e.g., Angioplasty with Reduced Restenosis or Pulmonary Vein Cell Necrosis to Inhibit Atrial Fibrillation”; Ser. No. 09/785,243, filed Feb. 16, 2001, entitled “Circulating Fluid Hypothermia Method and Apparatus”; Ser. No. 09/757,124, filed Jan. 8, 2001, entitled “Inflatable Catheter for Selective Organ Heating and Cooling and Method of Using the Same”; Ser. No. 09/566,531, filed May 8, 2000, entitled “Method of Making Selective Organ Cooling Catheter”; Ser. No. 09/650,940 filed Aug. 30, 2000, entitled “Selective Organ Hypothermia Method and Apparatus”; Ser. No. 09/932,402, filed Aug. 17, 2001, entitled “Method and Device for Performing Cooling- or Cryo-Therapies for, e.g., Angioplasty with Reduced Restenosis or Pulmonary Vein Cell Necrosis to Inhibit Atrial Fibrillation Employing Microporous Balloon”; Ser. No. 10/110,360, filed Apr. 10, 2002, entitled “Method and Device for Performing Cooling- or Cryo-Therapies for, e.g., Angioplasty with Reduced Restenosis or Pulmonary Vein Cell Necrosis to Inhibit Atrial Fibrillation Employing Tissue Protection”; and Ser. No. 10/086,585, filed Feb. 28, 2002, entitled “Method and Device for Performing Cooling- or Cryo-Therapies for, e.g., Angioplasty with Reduced Restenosis or Pulmonary Vein Cell Necrosis to Inhibit Atrial Fibrillation Employing Tissue Protection”. This application is also a continuation-in-part and utility conversion of Provisional Application Serial Nos.: 60/272,550 filed Mar. 1, 2001, entitled “Method and Apparatus for Inhibiting Tissue Damage During Cryo-Ablation”, and 60/273,095 filed Mar. 2, 2001, entitled “Annular Ring Balloon for Pulmonary Vein Cryoplasty”, all of the above are incorporated herein by reference in their entirety.
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