CA2503843A1 - Electrosurgical generator and method for cross-checking mode functionality - Google Patents
Electrosurgical generator and method for cross-checking mode functionality Download PDFInfo
- Publication number
- CA2503843A1 CA2503843A1 CA002503843A CA2503843A CA2503843A1 CA 2503843 A1 CA2503843 A1 CA 2503843A1 CA 002503843 A CA002503843 A CA 002503843A CA 2503843 A CA2503843 A CA 2503843A CA 2503843 A1 CA2503843 A1 CA 2503843A1
- Authority
- CA
- Canada
- Prior art keywords
- drive pulses
- output power
- pulse signal
- patterned pulse
- electrosurgical generator
- 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
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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
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00681—Aspects not otherwise provided for
- A61B2017/00725—Calibration or performance testing
-
- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00726—Duty cycle
-
- 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
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B2018/124—Generators therefor switching the output to different electrodes, e.g. sequentially
Abstract
The functionality and the mode of operation are evaluated in an electrosurgical generator by determining whether a patterned pulse signal that contributes to the generation of electrosurgical energy is as expected. A
number of pulses in the patterned pulse signal is compared to an expected number of pulses, and an error condition is indicated when the two values are not the same or differ by more than a predetermined amount. The expected number of pulses depends on a mode of operation of the electrosurgical generator. The error condition may be used to as a basis to terminate the output power delivery.
number of pulses in the patterned pulse signal is compared to an expected number of pulses, and an error condition is indicated when the two values are not the same or differ by more than a predetermined amount. The expected number of pulses depends on a mode of operation of the electrosurgical generator. The error condition may be used to as a basis to terminate the output power delivery.
Claims (18)
1. A method of evaluating functionality of an electrosurgical generator which delivers output power, comprising:
generating a patterned pulse signal with which the output power is generated, the patterned pulse signal having a plurality of drive pulses;
counting a number of the drive pulses in the patterned pulse signal;
comparing the counted number of drive pulses to an expected, number of drive pulses; and indicating an error, condition when the counted number of drive pulses and the expected number of drive pulses differ by a predetermined amount.
generating a patterned pulse signal with which the output power is generated, the patterned pulse signal having a plurality of drive pulses;
counting a number of the drive pulses in the patterned pulse signal;
comparing the counted number of drive pulses to an expected, number of drive pulses; and indicating an error, condition when the counted number of drive pulses and the expected number of drive pulses differ by a predetermined amount.
2. A method as defined in claim 1 further comprising:
controlling the output power by adjusting a width of the drive pulses.
controlling the output power by adjusting a width of the drive pulses.
3. A method as defined in claim 2 further comprising:
establishing a minimum width for the drive pulses.
establishing a minimum width for the drive pulses.
4. A method as defined in claim 1, wherein the output power is dependent on a width of the drive pulses, and further comprising:
preventing the width of the drive pulses from reducing below a minimum width.
preventing the width of the drive pulses from reducing below a minimum width.
5. A method as defined in claim 4, wherein the electrosurgical generator performs a power-related check on the output power, and further comprising:
generating the patterned pulse signal having the drive pulses when the width of the drive pulses is about at the minimum width.
generating the patterned pulse signal having the drive pulses when the width of the drive pulses is about at the minimum width.
6. A method as defined in claim 1 further comprising:
indicating an error condition when the counted number of drive pulses and the expected number of drive pulses differ by at least one.
indicating an error condition when the counted number of drive pulses and the expected number of drive pulses differ by at least one.
7. A method as defined in claim 1 further comprising:
indicating an error condition when the counted number of drive pulses and the expected number of drive pulses differ by a predetermined percentage of the expected number of drive pulses.
indicating an error condition when the counted number of drive pulses and the expected number of drive pulses differ by a predetermined percentage of the expected number of drive pulses.
8. A method as defined in claim 1, further comprising:
performing a power-related check on the output power, including calculating a power level of the output power; and indicating an error condition when the calculated power level is outside of a predetermined range.
performing a power-related check on the output power, including calculating a power level of the output power; and indicating an error condition when the calculated power level is outside of a predetermined range.
9. A method as defined in claim 1, wherein the electrosurgical generator includes a control processor which controls the delivery of the output power and also includes a monitor processor which monitors performance of the electrosurgical generator, and further comprising:
generating the patterned pulse signal using the control processor;
and counting the number of drive pulses using the monitor processor.
generating the patterned pulse signal using the control processor;
and counting the number of drive pulses using the monitor processor.
10. A method as defined in claim 1, wherein the drive pulses in the patterned pulse signal are arranged in a pattern that repeats over successive lime periods, and further comprising:
counting the number of the drive pulses in the patterned pulse signal over a counting time period that is greater than at least one of the successive time periods.
counting the number of the drive pulses in the patterned pulse signal over a counting time period that is greater than at least one of the successive time periods.
11. A method as defined in claim 10 further comprising:
counting the number of the drive pulses in the patterned pulse signal over at least two of the successive time periods.
counting the number of the drive pulses in the patterned pulse signal over at least two of the successive time periods.
12. A method as defined in claim 1, wherein the drive pulses in the patterned pulse signal are arranged in a pattern that repeats over successive time periods and that includes a off time during which no pulses occur, and further comprising:
counting the number of the drive pulses in the patterned pulse signal over a counting time period that insufficiently long to ensure that all of the drive pulses in at least one of the successive time periods are within the counting time period.
counting the number of the drive pulses in the patterned pulse signal over a counting time period that insufficiently long to ensure that all of the drive pulses in at least one of the successive time periods are within the counting time period.
13. A method of evaluating functionality of an electrosurgical generator which delivers output power under a plurality of modes of operation, comprising:
indicating one of the modes of operation under which the electrosurgical generator is to deliver the output power;
generating the output power by generating a patterned pulse signal in accordance with the indicated mode of operation;
detecting the driving signal;
determining from the driving signal whether the output power is being generated according to the indicated mode of operation; and indicating an error condition when it is determined that the output power is not being generated according to the indicated mode of operation.
indicating one of the modes of operation under which the electrosurgical generator is to deliver the output power;
generating the output power by generating a patterned pulse signal in accordance with the indicated mode of operation;
detecting the driving signal;
determining from the driving signal whether the output power is being generated according to the indicated mode of operation; and indicating an error condition when it is determined that the output power is not being generated according to the indicated mode of operation.
14. A method as defined in claim 13 further comprising:
reducing the output power to about zero.
reducing the output power to about zero.
15. A method as defined in claim 13 further comprising:
performing a power-related check on the output power, including calculating a power level of the output power; and indicating an error condition when the calculated power level is outside of a predetermined range dependent on the indicated mode of operation.
performing a power-related check on the output power, including calculating a power level of the output power; and indicating an error condition when the calculated power level is outside of a predetermined range dependent on the indicated mode of operation.
16. An electrosurgical generator which delivers electrosurgical output power according to a selected mode signal, comprising:
a control processor which generates a patterned pulse signal in accordance with the selected mode signal, the patterned pulse signal including a series of drive pulses which contribute to generating the electrosurgical output power;
a monitor processor connected to the control processor and which receives the patterned pulse signal, counts number of the drive pulses in the patterned pulse signal, determines an expected number of drive pulses in accordance with the selected mode signal, compares the counted number of drive pulses with the expected number of drive pulses and indicates an error
a control processor which generates a patterned pulse signal in accordance with the selected mode signal, the patterned pulse signal including a series of drive pulses which contribute to generating the electrosurgical output power;
a monitor processor connected to the control processor and which receives the patterned pulse signal, counts number of the drive pulses in the patterned pulse signal, determines an expected number of drive pulses in accordance with the selected mode signal, compares the counted number of drive pulses with the expected number of drive pulses and indicates an error
17 condition when the counted number of drive pulses and the expected number of drive pulses differ by a predetermined amount; and the electrosurgical generator responding to the indication of the error condition by one of either issuing an error indication or terminating the delivery of output power.
17. An electrosurgical generator as defined in claim 16 further comprising:
a system processor connected to the control processor and the monitor processor and which oversees functionality of the control and monitor processors, the system processor generating the selected mode signal and sending the selected mode signal to the control processor and the monitor processor.
17. An electrosurgical generator as defined in claim 16 further comprising:
a system processor connected to the control processor and the monitor processor and which oversees functionality of the control and monitor processors, the system processor generating the selected mode signal and sending the selected mode signal to the control processor and the monitor processor.
18
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/299,952 | 2002-11-19 | ||
| US10/299,952 US6875210B2 (en) | 2002-11-19 | 2002-11-19 | Electrosurgical generator and method for cross-checking mode functionality |
| PCT/US2003/034076 WO2004045438A1 (en) | 2002-11-19 | 2003-10-27 | Electrosurgical generator and method for cross-checking mode functionality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2503843A1 true CA2503843A1 (en) | 2004-06-03 |
| CA2503843C CA2503843C (en) | 2010-11-09 |
Family
ID=32297811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2503843A Expired - Fee Related CA2503843C (en) | 2002-11-19 | 2003-10-27 | Electrosurgical generator and method for cross-checking mode functionality |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6875210B2 (en) |
| EP (1) | EP1562503B1 (en) |
| JP (1) | JP4727230B2 (en) |
| CN (1) | CN1713857A (en) |
| AT (1) | ATE457695T1 (en) |
| AU (1) | AU2003283031A1 (en) |
| CA (1) | CA2503843C (en) |
| DE (1) | DE60331339D1 (en) |
| WO (1) | WO2004045438A1 (en) |
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2002
- 2002-11-19 US US10/299,952 patent/US6875210B2/en not_active Expired - Lifetime
-
2003
- 2003-10-27 AT AT03774963T patent/ATE457695T1/en not_active IP Right Cessation
- 2003-10-27 JP JP2004553481A patent/JP4727230B2/en not_active Expired - Fee Related
- 2003-10-27 CA CA2503843A patent/CA2503843C/en not_active Expired - Fee Related
- 2003-10-27 EP EP03774963A patent/EP1562503B1/en not_active Expired - Lifetime
- 2003-10-27 CN CNA2003801036778A patent/CN1713857A/en active Pending
- 2003-10-27 WO PCT/US2003/034076 patent/WO2004045438A1/en active Application Filing
- 2003-10-27 AU AU2003283031A patent/AU2003283031A1/en not_active Abandoned
- 2003-10-27 DE DE60331339T patent/DE60331339D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004045438A1 (en) | 2004-06-03 |
| US6875210B2 (en) | 2005-04-05 |
| AU2003283031A1 (en) | 2004-06-15 |
| EP1562503B1 (en) | 2010-02-17 |
| CN1713857A (en) | 2005-12-28 |
| JP4727230B2 (en) | 2011-07-20 |
| CA2503843C (en) | 2010-11-09 |
| JP2006506176A (en) | 2006-02-23 |
| DE60331339D1 (en) | 2010-04-01 |
| US20040097913A1 (en) | 2004-05-20 |
| EP1562503A1 (en) | 2005-08-17 |
| WO2004045438A8 (en) | 2005-06-16 |
| ATE457695T1 (en) | 2010-03-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20211027 |