发明名称 |
Method and apparatus for controlling a temperature-controlled probe |
摘要 |
A thermal energy controller system useful in medical procedures includes a controller coupled to a probe, and a thermal element to vary probe temperature. The controller includes memory storing a non-continuous algorithm that permits user-selectable settings for various probe types such that controller operation is self-modifying in response to the selected probe setting. Probe output power Pout is constant in one mode to rapidly enable probe temperature to come within a threshold of a target temperature. The controller can then vary Pout dynamically using a proportional-integral-derivative (PID) algorithm Pout=Kp.P+Ki.I+Kd.D, where feedback loop coefficients Kp, Ki, Kd can vary dynamically depending upon magnitude of an error function e(t) representing the difference between a user-set desired target temperature and sensed probe temperature. Advantageously, target temperature can be rapidly attained without overshoot, allowing the probe system to be especially effective in arthroscopic tissue treatment.
|
申请公布号 |
US2003060818(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
US20020187462 |
申请日期 |
2002.06.28 |
申请人 |
ORATEC INTERVENTIONS, INC. |
发明人 |
KANNENBERG DONALD P.;MARION DUANE W. |
分类号 |
G01K7/00;A61B17/00;A61B17/56;A61B18/00;A61B18/02;A61B18/04;A61B18/08;A61B18/12;A61B18/14;(IPC1-7):A61B18/04 |
主分类号 |
G01K7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|