Patent US20020072767A1 successfully refreshed from Google Patents.
US6183468B1
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US
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Systems and methods for controlling power in an electrosurgical probe
Assignee: Boston Scientific Scimed Inc
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Filing: 1998-09-10
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Granted: 2001-02-06
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Expires: 2018-09-10
Abstract
Abstract Systems and methods for controlling the power supplied to an electrosurgical probe. The systems and methods may be used to monitor electrode-tissue contact, adjust power in response to a loss of contact, and apply power in such a manner that charring, coagulum formation and tissue popping are less likely to occur.
Inventors
- 👤 David K. Swanson
- 👤 James G. Whayne
- 👤 Dorin Panescu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:55
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B18/1206; A61B2018/00053; A61B2018/0016; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00642; A61B2018/00654; A61B2018/0069; A61B2018/00696; A61B2018/00702; A61B2018/00714; A61B2018/00726; A61B2018/00773; A61B2018/00791; A61B2018/00797; A61B2018/00803; A61B2018/00821; A61B2018/00875; A61B2018/124; A61B2018/1246; A61B2018/1253; A61B2018/128; A61B2018/1467
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
122 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that receives an input set temperature, stores the set temperature, brings the temperature at the at least one electrode to an intermediate temperature at a predetermined time that is less than the set temperature at the predetermined time, maintains the intermediate temperature for a predetermined period, and increases the temperature at the at least one electrode to the set temperature at the end of the predetermined period.
Claim 2
Independent Claim
122 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that receives an input set temperature, stores the set temperature, brings the temperature at the at least one electrode to an intermediate temperature at a predetermined time that is less than the set temperature at the predetermined time, maintains the intermediate temperature for a predetermined period, and increases the temperature at the at least one electrode to the set temperature at the end of the predetermined period.
Claim 3
Dependent Claim
17 words
An apparatus as claimed in claim 1 , wherein the support element comprises a relatively stiff shaft.
Claim 4
Dependent Claim
17 words
An apparatus as claimed in claim 1 , wherein the predetermined period is at least one second.
Claim 5
Dependent Claim
17 words
An apparatus as claimed in claim 1 , wherein the predetermined period is at least five seconds.
Claim 6
Dependent Claim
17 words
An apparatus as claimed in claim 1 , wherein the predetermined period is at least ten seconds.
Claim 7
Dependent Claim
21 words
An apparatus as claimed in claim 1 , wherein the intermediate temperature is approximately 10° C. less than the set temperature.
Claim 8
Dependent Claim
17 words
An apparatus as claimed in claim 1 , wherein the intermediate temperature is sufficient to desiccate tissue.
Claim 9
Independent Claim
106 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a set temperature, brings the temperature at the at least one electrode to an intermediate temperature of approximately 60° C., maintains the intermediate temperature for a predetermined period, and increases the temperature at the at least one electrode to the set temperature at the end of the predetermined period.
Claim 10
Independent Claim
106 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a set temperature, brings the temperature at the at least one electrode to an intermediate temperature of approximately 60° C., maintains the intermediate temperature for a predetermined period, and increases the temperature at the at least one electrode to the set temperature at the end of the predetermined period.
Claim 11
Dependent Claim
30 words
An apparatus as claimed in claim 1 , wherein the control system employs a PID control algorithm to maintain the temperature at the least one electrode at the intermediate temperature.
Claim 12
Independent Claim
73 words
A method of coagulating tissue, comprising the steps of: selecting a set temperature; placing an electrode in contact with tissue; bringing the temperature at the electrode to a first temperature at a predetermined time that is which is less than the set temperature at the predetermined time; maintaining the temperature at the electrode at the first temperature for a first predetermined period; and increasing the temperature at the electrode to the set temperature.
Claim 13
Independent Claim
73 words
A method of coagulating tissue, comprising the steps of: selecting a set temperature; placing an electrode in contact with tissue; bringing the temperature at the electrode to a first temperature at a predetermined time that is which is less than the set temperature at the predetermined time; maintaining the temperature at the electrode at the first temperature for a first predetermined period; and increasing the temperature at the electrode to the set temperature.
Claim 14
Dependent Claim
28 words
A method as claimed in claim 10 , further comprising the step of: maintaining the temperature at the electrode at the set temperature for a second predetermined period.
Claim 15
Dependent Claim
18 words
A method as claimed in claim 10 , wherein the first predetermined period is at least one second.
Claim 16
Dependent Claim
18 words
A method as claimed in claim 10 , wherein the first predetermined period is at least five seconds.
Claim 17
Dependent Claim
18 words
A method as claimed in claim 10 , wherein the first predetermined period is at least ten seconds.
Claim 18
Dependent Claim
21 words
A method as claimed in claim 10 , wherein the first temperature is approximately 10° C. less than the set temperature.
Claim 19
Dependent Claim
17 words
A method as claimed in claim 10 , wherein the first temperature is sufficient to desiccate tissue.
Claim 20
Independent Claim
67 words
A method of coagulating tissue, comprising the steps of: selecting a set temperature; placing an electrode in contact with tissue; bringing the temperature at the electrode to a first temperature of approximately 60° C., which is less than the set temperature; maintaining the temperature at the electrode at the first temperature for a first predetermined period; and increasing the temperature at the electrode to the set temperature.
Claim 21
Independent Claim
67 words
A method of coagulating tissue, comprising the steps of: selecting a set temperature; placing an electrode in contact with tissue; bringing the temperature at the electrode to a first temperature of approximately 60° C., which is less than the set temperature; maintaining the temperature at the electrode at the first temperature for a first predetermined period; and increasing the temperature at the electrode to the set temperature.
Claim 22
Independent Claim
93 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a coagulation parameter at a first coagulation parameter setting, predicts a hottest tissue temperature, adjusts the coagulation parameter based on the hottest tissue temperature prediction, and re-sets the coagulation parameter to a second coagulation parameter setting.
Claim 23
Independent Claim
93 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a coagulation parameter at a first coagulation parameter setting, predicts a hottest tissue temperature, adjusts the coagulation parameter based on the hottest tissue temperature prediction, and re-sets the coagulation parameter to a second coagulation parameter setting.
Claim 24
Dependent Claim
16 words
An apparatus as claimed in claim 18 , wherein the coagulation parameter comprises energy application duration.
Claim 25
Dependent Claim
17 words
An apparatus as claimed in claim 18 , wherein the coagulation parameter comprises a temperature set curve.
Claim 26
Independent Claim
144 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a temperature profile including a plurality of set temperatures at a plurality of respective set times, brings the temperature at the at least one electrode to an intermediate temperature at a predetermined set time below the set temperature for that set time, maintains the intermediate temperature for a predetermined period below the set temperatures for the set times during the predetermined period, and increases the temperature at the at least one electrode to the set temperature for the set time at the end of the predetermined period.
Claim 27
Independent Claim
144 words
An apparatus for coagulating tissue, comprising: a support element; at least one electrode on the support element; at least one temperature sensor on the support element; a source of tissue coagulating energy operably connected to the electrode; and a control system, operably connected to the energy source and to the at least one temperature sensor, that stores a temperature profile including a plurality of set temperatures at a plurality of respective set times, brings the temperature at the at least one electrode to an intermediate temperature at a predetermined set time below the set temperature for that set time, maintains the intermediate temperature for a predetermined period below the set temperatures for the set times during the predetermined period, and increases the temperature at the at least one electrode to the set temperature for the set time at the end of the predetermined period.
Claim 28
Dependent Claim
22 words
An apparatus as claimed in claim 21 , wherein the set temperature is the same at each of the respective set times.
Claim 29
Dependent Claim
23 words
An apparatus as claimed in claim 21 , wherein the set temperature is not the same at each of the respective set times.
Claim 30
Dependent Claim
17 words
An apparatus as claimed in claim 21 , wherein the support element comprises a relatively stiff shaft.
Claim 31
Dependent Claim
17 words
An apparatus as claimed in claim 21 , wherein the predetermined period is at least one second.
Claim 32
Dependent Claim
17 words
An apparatus as claimed in claim 21 , wherein the predetermined period is at least five seconds.
Claim 33
Dependent Claim
17 words
An apparatus as claimed in claim 21 , wherein the predetermined period is at least ten seconds.
Claim 34
Dependent Claim
21 words
An apparatus as claimed in claim 21 , wherein the intermediate temperature is approximately 10° C. less than the set temperature.
Claim 35
Dependent Claim
17 words
An apparatus as claimed in claim 21 , wherein the intermediate temperature is sufficient to desiccate tissue.
Claim 36
Dependent Claim
16 words
An apparatus as claimed in claim 21 , wherein the intermediate temperature is approximately 60° C.
Claim 37
Dependent Claim
30 words
An apparatus as claimed in claim 21 , wherein the control system employs a PID control algorithm to maintain the temperature at the least one electrode at the intermediate temperature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-02-06 | 2004-08-07 | 2005-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-06 | 2008-08-07 | 2009-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-06 | 2012-08-07 | 2013-02-06 | $7700.00 | Window Closed / Lapsed |