CA2435429A1 - Catheter - Google Patents
Catheter Download PDFInfo
- Publication number
- CA2435429A1 CA2435429A1 CA002435429A CA2435429A CA2435429A1 CA 2435429 A1 CA2435429 A1 CA 2435429A1 CA 002435429 A CA002435429 A CA 002435429A CA 2435429 A CA2435429 A CA 2435429A CA 2435429 A1 CA2435429 A1 CA 2435429A1
- Authority
- CA
- Canada
- Prior art keywords
- coolant
- enclosure
- catheter
- supply line
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
- A61B2017/00084—Temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00199—Electrical control of surgical instruments with a console, e.g. a control panel with a display
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0212—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0231—Characteristics of handpieces or probes
- A61B2018/0262—Characteristics of handpieces or probes using a circulating cryogenic fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0231—Characteristics of handpieces or probes
- A61B2018/0262—Characteristics of handpieces or probes using a circulating cryogenic fluid
- A61B2018/0268—Characteristics of handpieces or probes using a circulating cryogenic fluid with restriction of flow
Abstract
A cryogenic medical system includes a medical device and a console connectable to the medical device at a connection point. The console controls the temperature of the medical device. The console includes a first cooling system directing coolant to the medical device at a first temperature along a coolant supply line and a second cooling system chilling the coolant within the coolant supply line to a temperature below the first temperature before the coolant reaches the connection point.
Claims (12)
1. A cryogenic medical system comprising:
a medical device including a medical probe;
a console connectable to the medical device at a connection point, the console controlling temperature of the medical device, and the console including;
a first cooling system comprising a substantially closed loop having a coolant supply line leading to the medical probe and a coolant return line leading from the medical device, the first cooling system directing coolant to the medical device at a first temperature along the coolant supply line;
a first compressor un fluid communication with a first condenser outputting coolant into the coolant supply line; and a vacuum pump in fluid communication with the first compressor and the medical probe; and a second cooling system chilling the coolant within the coolant supply line to a temperature below the first temperature before the coolant reaches the connection point.
a medical device including a medical probe;
a console connectable to the medical device at a connection point, the console controlling temperature of the medical device, and the console including;
a first cooling system comprising a substantially closed loop having a coolant supply line leading to the medical probe and a coolant return line leading from the medical device, the first cooling system directing coolant to the medical device at a first temperature along the coolant supply line;
a first compressor un fluid communication with a first condenser outputting coolant into the coolant supply line; and a vacuum pump in fluid communication with the first compressor and the medical probe; and a second cooling system chilling the coolant within the coolant supply line to a temperature below the first temperature before the coolant reaches the connection point.
2. The system of claim 1, wherein the medical device includes a catheter.
3. The system of claim 1, wherein the vacuum pump establishes a pressure within the coolant return line and the medical device that is below ambient atmospheric pressure.
4. The system of claim 1, wherein the second cooling system includes an enclosure having an inlet and an outlet; the enclosure defining a fluid path from the inlet to the outlet, and the enclosure enveloping a portion of the coolant supply line wherein the portion of the fluid supply line defines one or more orifices, the one or more orifices being the inlet to the enclosure.
5. The system of claim 4, further comprising a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant from the outlet of the enclosure.
6. The system of claim 5, further comprising a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant from the outlet of the enclosure.
7. The system of claim 2, wherein the first cooling system includes a coolant return line leading from the catheter to a coolant scavenging system, and wherein the first cooling system and the catheter comprise a substantially open-loop.
8. The system of claim 7, wherein the first cooling system includes:
a coolant reservoir in fluid communication with the fluid supply line; and a vacuum pump interposed between the catheter and the coolant collection tank.
a coolant reservoir in fluid communication with the fluid supply line; and a vacuum pump interposed between the catheter and the coolant collection tank.
9. The system of claim 8, wherein the vacuum pump creates a pressure within the catheter that is below ambient atmospheric pressure.
10. The system of claim 7, wherein the second cooling system includes an enclosure having an inlet and an outlet; the enclosure defining a fluid path from the inlet to the outlet, and the enclosure enveloping a portion of the coolant supply line.
11. The system of claim 10, further comprising a compressor in fluid communication with a condenser outputting coolant to the inlet of the enclosure and receiving coolant from the outlet of the enclosure.
6. The system of claim 4, further comprising:
a temperature sensor far measuring the temperature within the enclosure; and a coolant flow regulator responsive to the temperature sensor for controlling fluid flow from the second fluid supply line into the enclosure.
7. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a first compressor in fluid communication with a first condenser outputting a liquid coolant into the coolant supply line, and a vacuum pump in fluid communication with the first compressor that establishes a pressure within the coolant return line that is below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclose defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant tom the outlet of the enclosure.
A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a coolant reservoir in fluid communication with the fluid supply line, a coolant collection tank in fluid communication with the coolant return line, and a vacuum pump interposed between the catheter and the coolant collection tank that establishes a pressure within the coolant return line below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second fluid supply line in fluid communication with the coolant reservoir and the inlet of the enclosure.
9. A cryogenic medical system comprising:
a medical device;
a console including accessories, the console being connectable to the medical devise at a connection point, the console controlling temperature of the medical device, and the console including a first system directing coolant in a mixed gas and liquid state to the medical device along a coolant supply line; and a second system decreasing the percentage of gas in the coolant before the coolant reaches the connection point.
10. The system of claim 9, wherein the second system decreases the percentage of gas in the coolant by reducing the temperature of the coolant, and wherein the system further comprises a chamber having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line;
and a controller for controlling coolant flow into the chamber.
11. The system of 10, wherein the controller establishes a duty cycle for cyclically allowing and denying entry of coolant into the chamber at a rate responsive to sensed temperature within the chamber to selectively raise, lower, and maintain temperature of coolant within the coolant supply line.
6. The system of claim 4, further comprising:
a temperature sensor far measuring the temperature within the enclosure; and a coolant flow regulator responsive to the temperature sensor for controlling fluid flow from the second fluid supply line into the enclosure.
7. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a first compressor in fluid communication with a first condenser outputting a liquid coolant into the coolant supply line, and a vacuum pump in fluid communication with the first compressor that establishes a pressure within the coolant return line that is below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclose defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant tom the outlet of the enclosure.
A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a coolant reservoir in fluid communication with the fluid supply line, a coolant collection tank in fluid communication with the coolant return line, and a vacuum pump interposed between the catheter and the coolant collection tank that establishes a pressure within the coolant return line below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second fluid supply line in fluid communication with the coolant reservoir and the inlet of the enclosure.
9. A cryogenic medical system comprising:
a medical device;
a console including accessories, the console being connectable to the medical devise at a connection point, the console controlling temperature of the medical device, and the console including a first system directing coolant in a mixed gas and liquid state to the medical device along a coolant supply line; and a second system decreasing the percentage of gas in the coolant before the coolant reaches the connection point.
10. The system of claim 9, wherein the second system decreases the percentage of gas in the coolant by reducing the temperature of the coolant, and wherein the system further comprises a chamber having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line;
and a controller for controlling coolant flow into the chamber.
11. The system of 10, wherein the controller establishes a duty cycle for cyclically allowing and denying entry of coolant into the chamber at a rate responsive to sensed temperature within the chamber to selectively raise, lower, and maintain temperature of coolant within the coolant supply line.
12. The system of claim 10, wherein the inlet is provide inside the enclosure.
15. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a first compressor in fluid communication with a first condenser outputting coolant into the coolant supply line, and a vacuum pump in fluid communication with the first compressor that establishes a pressure within the coolant return line that is below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant from the outlet of the enclosure.
16. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a coolant reservoir in fluid communication with the fluid supply line, a coolant collection tank in fluid communication with the coolant return line, and a vacuum pump interposed between the catheter and the coolant collection tank that establishes a pressure within the coolant return line below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second fluid supply line in fluid communication with the coolant reservoir and the inlet of the enclosure.
17. A cryogenic medical system comprising:
a medical device;
a console including accessories, the connectable to the medical device at a connection point, the console controlling temperature of the medical device, and the console including a first system directing coolant in a mixed gas and liquid state to the medical device along a coolant supply line; and a second system decreasing the percentage of gas in the coolant before the coolant reaches the connection point.
18. The system of claim 17, wherein the second system decreases the percentage of gas in the coolant by reducing the temperature of the coolant, and wherein the system further comprises an chamber having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line; and a controller for controlling coolant flow into the chamber.
19. The system of claim 18, wherein the controller establishes a duty cycle for cyclically allowing and denying entry of coolant into the chamber at a rate responsive to sensed temperature within the chamber to selectively raise, lower, and maintain temperature of coolant within the coolant supply line.
20. The system of claim 10, wherein the inlet is provided inside the enclosure.
15. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a first compressor in fluid communication with a first condenser outputting coolant into the coolant supply line, and a vacuum pump in fluid communication with the first compressor that establishes a pressure within the coolant return line that is below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second compressor in fluid communication with a second condenser outputting coolant to the inlet of the enclosure and receiving coolant from the outlet of the enclosure.
16. A cryogenic medical system comprising:
a catheter;
a console including accessories, the console connectable to the catheter at a connection point, the console controlling temperature of the catheter, and the console including a first cooling system including a coolant supply line leading to the catheter, a coolant return line leading from the catheter, a coolant reservoir in fluid communication with the fluid supply line, a coolant collection tank in fluid communication with the coolant return line, and a vacuum pump interposed between the catheter and the coolant collection tank that establishes a pressure within the coolant return line below ambient atmospheric pressure; and a second cooling system including an enclosure having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line of the first cooling system; and a second fluid supply line in fluid communication with the coolant reservoir and the inlet of the enclosure.
17. A cryogenic medical system comprising:
a medical device;
a console including accessories, the connectable to the medical device at a connection point, the console controlling temperature of the medical device, and the console including a first system directing coolant in a mixed gas and liquid state to the medical device along a coolant supply line; and a second system decreasing the percentage of gas in the coolant before the coolant reaches the connection point.
18. The system of claim 17, wherein the second system decreases the percentage of gas in the coolant by reducing the temperature of the coolant, and wherein the system further comprises an chamber having an inlet and an outlet, wherein the enclosure defines a fluid path from the inlet to the outlet, and the enclosure envelops a portion of the coolant supply line; and a controller for controlling coolant flow into the chamber.
19. The system of claim 18, wherein the controller establishes a duty cycle for cyclically allowing and denying entry of coolant into the chamber at a rate responsive to sensed temperature within the chamber to selectively raise, lower, and maintain temperature of coolant within the coolant supply line.
20. The system of claim 10, wherein the inlet is provided inside the enclosure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2651832A CA2651832C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
| CA2651835A CA2651835C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/771,031 US6592577B2 (en) | 1999-01-25 | 2001-01-26 | Cooling system |
| US09/771,031 | 2001-01-26 | ||
| PCT/CA2002/000088 WO2002058576A1 (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2651835A Division CA2651835C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
| CA2651832A Division CA2651832C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2435429A1 true CA2435429A1 (en) | 2002-08-01 |
| CA2435429C CA2435429C (en) | 2010-01-05 |
Family
ID=25090471
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2651835A Expired - Fee Related CA2651835C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
| CA2651832A Expired - Fee Related CA2651832C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
| CA002435429A Expired - Fee Related CA2435429C (en) | 2001-01-26 | 2002-01-25 | Catheter |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2651835A Expired - Fee Related CA2651835C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
| CA2651832A Expired - Fee Related CA2651832C (en) | 2001-01-26 | 2002-01-25 | Precooled cryogenic medical system |
Country Status (6)
| Country | Link |
|---|---|
| US (5) | US6592577B2 (en) |
| EP (1) | EP1357847B1 (en) |
| AT (1) | ATE320766T1 (en) |
| CA (3) | CA2651835C (en) |
| DE (1) | DE60210046T2 (en) |
| WO (1) | WO2002058576A1 (en) |
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| CA2651835A1 (en) | 2002-08-01 |
| EP1357847B1 (en) | 2006-03-22 |
| CA2651832A1 (en) | 2002-08-01 |
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| US8361059B2 (en) | 2013-01-29 |
| US20070093799A1 (en) | 2007-04-26 |
| WO2002058576A1 (en) | 2002-08-01 |
| US7780657B2 (en) | 2010-08-24 |
| US20010021847A1 (en) | 2001-09-13 |
| DE60210046D1 (en) | 2006-05-11 |
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