Claims
- 1. A cryogenic catheter system, comprising:
a cryogenic catheter having a tissue-treating end and a mating end; an umbilical system having a first end coupled to the mating end of the catheter and a second end; a console coupled to the second end of the umbilical system; and a processor coupled to the console for automatically controlling a pressure of fluid coolant flowing to the catheter and controlling a vacuum pressure of gas coolant flowing from the catheter so as to cool the tissue-treating end of the catheter to a predetermined temperature.
- 2. The system according to claim 1, further including a user interface for allowing a user to select from a plurality of predetermined treatment procedures.
- 3. The system according to claim 1, further including a monitoring means coupled to the processor for monitoring system operating and safety parameters.
- 4. The system according to claim 3, wherein the monitoring means generates a failure indication and terminates a procedure in progress upon detecting a failure type condition.
- 5. The system according to claim 4, wherein the monitoring means generates a warning indication upon detecting a warning type condition.
- 6. The system according to claim 1, wherein the monitoring means includes a leak detection system for detecting a leak in the system.
- 7. The system according to claim 6, wherein the leak detection system includes a first sensor located in the catheter.
- 8. The system according to claim 7, wherein the leak detection system further includes a second sensor located in a handle of the catheter.
- 9. The system according to claim 8, wherein the leak detection system further includes a third sensor located in the console.
- 10. The system according to claim 1, wherein the pressure of liquid coolant delivered to the tissue-treating end of the catheter is determined by an actual temperature at the tissue-treating end of the catheter.
- 11. The system according to claim 10, further including a thermocouple disposed within the tissue-treating end of the catheter for measuring the actual temperature at the tissue-treating end of the catheter.
- 12. The system according to claim 1, wherein the processor regulates the coolant flow and vacuum operation to maintain a negative pressure within the cryogenic catheter.
- 13. The system according to claim 1, further comprising a flow detection means for monitoring coolant flow through the system.
- 14. A cryogenic catheter system, comprising:
a cryogenic catheter having a tissue-treating end and a mating end; an umbilical system having a first end coupled to the mating end of the catheter and a second end; a console coupled to the second end of the umbilical system; and a processor coupled to the console for controlling a pressure of fluid coolant flowing to the catheter, controlling a vacuum pressure of gas coolant flowing from the catheter, for implementing a user selected treatment procedure, and monitoring system operating and safety parameters.
- 15. The system according to claim 14, further comprising a leak detection system.
- 16. The system according to claim 14, wherein the processor regulates coolant flow and vacuum operation to maintain a pressure within the cryogenic catheter below a patient's blood pressure.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority from U.S. Provisional Patent Application Ser. No. 60/117,175, filed on Jan. 25, 1999.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60117175 |
Jan 1999 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09489644 |
Jan 2000 |
US |
Child |
10252501 |
Sep 2002 |
US |