Electric field and temperature probe

Details Electric field and temperature probe Electric field and temperature probe

1988-04-29

1992-05-19

Cohen, Lee S.

Surgery

Truss

Pad

128736, 324 725, A61B 505

Patent

active

051138646

ABSTRACT:
A catheter is used to insert a probe into a tumor undergoing hyperthermia treatment. The probe is designed to isotropically measure the electric field and temperature in the tumor during the hyperthermia treatment. The probe is constructed on a triangular prism and includes a dipole on each prism face oriented at an angle of 54.74 degrees relative to the axis of the prism. Each dipole includes rectifier means therein and the three dipoles are coupled serially using high resistivity lead means. In addition, high resistivity leads are used to couple the dipoles to a high input impedance amplifier. A pair of thermistors are coupled between the three dipoles, and high resistance lead means couple the thermistors to high input impedance amplifiers. A current source is used to provide current to the thermistors in a time shared manner when the electric field is not being measured. The probe may have a pair of beryllium oxide or diamond layers attached to the ends thereof against which the thermistors may be positioned. With the above construction, the total electric field may be measured as well as the temperature at two locations.

REFERENCES:
patent: 3721900 (1973-03-01), Andrews
patent: 3794914 (1974-02-01), Aslan
patent: 3931573 (1976-01-01), Hopfer
patent: 4091327 (1978-05-01), Larsen et al.
patent: 4392108 (1983-07-01), Hopfer
patent: 4588993 (1986-05-01), Babij et al.
patent: 4813429 (1989-03-01), Eshel et al.
R. R. Bowman "Some Recent Devt's in the Characterization and Measurement of Hazardous EM Fields", Biologic Effects and Health Hazards of MW Radiation, Polish Medical Publishers, Warsaw (1974), pp. 217-227.
R. R. Bowman, "A Probe for Measuring Temperature in RF Heated Material", IEEE, Transactions on MW Theory and Techniques, vol. MTT-24 (Jan. 1976), pp. 43-45.

Affiliated with

Also associated with

Rating

Electric field and temperature probe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric field and temperature probe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric field and temperature probe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2412630