CA2707199A1 - Leak detection system - Google Patents
Leak detection system Download PDFInfo
- Publication number
- CA2707199A1 CA2707199A1 CA2707199A CA2707199A CA2707199A1 CA 2707199 A1 CA2707199 A1 CA 2707199A1 CA 2707199 A CA2707199 A CA 2707199A CA 2707199 A CA2707199 A CA 2707199A CA 2707199 A1 CA2707199 A1 CA 2707199A1
- Authority
- CA
- Canada
- Prior art keywords
- surgical device
- fluid path
- leak detection
- detection apparatus
- sealed fluid
- 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
- A61B2017/00092—Temperature using thermocouples
-
- 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
- A61B2017/00115—Electrical control of surgical instruments with audible or visual output
- A61B2017/00119—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation
-
- 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
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
Abstract
A surgical device includes a device body defining a sealed fluid path having a first end and a second end, a refrigerant supply in communication with the first end of the sealed fluid path, and a vacuum source in communication with the second end of the sealed fluid path.
Leak detection apparatus can be provided in communication with the sealed fluid path.
Leak detection apparatus can be provided in communication with the sealed fluid path.
Claims (20)
1. A surgical device comprising:
a device body defining a sealed fluid path having a first end and a second end;
a refrigerant supply in communication with the first end of the sealed fluid path;
a leak detection apparatus in fluid communication with the sealed fluid path;
and a control unit responsive to output from the leak detection apparatus to control fluid flow through the sealed fluid flow path.
a device body defining a sealed fluid path having a first end and a second end;
a refrigerant supply in communication with the first end of the sealed fluid path;
a leak detection apparatus in fluid communication with the sealed fluid path;
and a control unit responsive to output from the leak detection apparatus to control fluid flow through the sealed fluid flow path.
2. The surgical device of claim 1, wherein the control unit controls fluid flow by discontinuing fluid flow from the refrigerant supply.
3. The surgical device of claim 1, wherein the control unit controls fluid flow by changing a pressure within the sealed fluid path.
4. The surgical device of claim 1, wherein the control unit controls fluid flow by controlling removal of refrigerant from the device body.
5. The surgical device of claim 1, further comprising a vacuum source in fluid communication with the second end of the sealed fluid path.
6. The surgical device of claim 5, wherein the control unit controls fluid flow by modifying operation of the vacuum source.
7. The surgical device of claim 1, wherein the refrigerant supply includes a cryogenic fluid.
8. The surgical device of claim 1, wherein the refrigerant supply includes a fluid in a liquid state.
9. The surgical device of claim 1, wherein the refrigerant supply includes a fluid in a gaseous state.
10. The surgical device of claim 1, further comprising a console enclosing at least a portion of the refrigerant supply.
11. The surgical device of claim 10, wherein the console includes a vacuum pump in fluid communication with the second end of the sealed fluid path.
12. The surgical device of claim 10, wherein the console includes the control unit.
13. The surgical device of claim 10, wherein the console includes an apparatus for recovery and recompression of refrigerant expelled from the sealed fluid path.
14. The surgical device of claim 1, wherein the leak detection apparatus includes a blood detector.
15. The surgical device of claim 1, wherein the leak detection apparatus includes an impedance measurement circuit in the fluid path.
16. The surgical device of claim 15, wherein the impedance measurement circuit includes a conductive portion of the device body and a wire that is electrically isolated from the conductive portion of the device body.
17. The surgical device of claim 16, wherein the conductive portion of the device body is a metal catheter tip and wherein the wire is a catheter steering wire.
18. The surgical device of claim 1, wherein the leak detection apparatus includes an infrared sensor exposed to the sealed fluid path.
19. The surgical device of claim 1, wherein the leak detection apparatus includes a pulsed ultrasonic device.
20. The surgical device of claim 1, wherein the device body is a catheter.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11717599P | 1999-01-25 | 1999-01-25 | |
US60/117,175 | 1999-01-25 | ||
CA2638741A CA2638741C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2638741A Division CA2638741C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2707199A1 true CA2707199A1 (en) | 2000-07-27 |
CA2707199C CA2707199C (en) | 2012-04-03 |
Family
ID=22371346
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002361093A Expired - Fee Related CA2361093C (en) | 1999-01-25 | 2000-01-25 | Cryogenic catheter system |
CA2707199A Expired - Fee Related CA2707199C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
CA002361097A Expired - Fee Related CA2361097C (en) | 1999-01-25 | 2000-01-25 | Closed loop catheter coolant system |
CA2638741A Expired - Fee Related CA2638741C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
CA002361098A Expired - Fee Related CA2361098C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002361093A Expired - Fee Related CA2361093C (en) | 1999-01-25 | 2000-01-25 | Cryogenic catheter system |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002361097A Expired - Fee Related CA2361097C (en) | 1999-01-25 | 2000-01-25 | Closed loop catheter coolant system |
CA2638741A Expired - Fee Related CA2638741C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
CA002361098A Expired - Fee Related CA2361098C (en) | 1999-01-25 | 2000-01-25 | Leak detection system |
Country Status (6)
Country | Link |
---|---|
US (10) | US6468268B1 (en) |
EP (3) | EP1148832A1 (en) |
AT (2) | ATE243981T1 (en) |
CA (5) | CA2361093C (en) |
DE (2) | DE60003635T2 (en) |
WO (3) | WO2000042932A1 (en) |
Families Citing this family (207)
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