Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Reexamination Certificate
2006-09-26
2006-09-26
Rollins, Rosiland (Department: 3739)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
C607S102000, C607S113000, C607S115000, C607S156000
Reexamination Certificate
active
07113832
ABSTRACT:
The present invention relates to minimally invasive surgery techniques. It provides a method for manufacturing an antenna for percutaneous acute hyperthermia microwave applications of the monopole or dipole co-axial type provided with trap, commonly called choke, for blocking the propagation of the backwards reflecting wave towards the generator. The miniaturization of the device allows a use minimally invasive for interstitial hyperthermia in medicine and surgery, in particular for oncology. The method of manufacturing the antenna provides a metal needle (1) for the introduction of the antenna (2,3,4) in the target tissue. On the external conductor (4) of the antenna (2) a metal collar6is connected in a predetermined position; a plastics sheath (5) is applied in order to cover the external conductor (2) in the portion between the feed (7) and the collar6; the inner wall of the metal needle1wherein the antenna is inserted is then used for containing and guiding the collar6and the sheath5; in particular, the collar6being in electrical contact with the inner wall of the metal needle1. An antenna is thus obtained with choke of variable length and with miniaturized diameter. A thermocouple can be introduced through the choke that protrudes the directly in the “feed” zone.
REFERENCES:
patent: 4448198 (1984-05-01), Turner
patent: 5057106 (1991-10-01), Kasevich et al.
patent: 5370676 (1994-12-01), Sozanski et al.
patent: 1055400 (2000-11-01), None
James C. Lin and Yu-Jin Wang, “The Cap-Choke Catheter Antenna for Microwave Ablation Treatment” published in IEEE Transaction on Biomedical Engineering, IEEE Inc. New York, US, vol. 43 No. 6, Jun. 1, 1996.
Gerd Schaller, Jurgen Erb, and Rainer Engelbrecht, “Field Simulation of Dipole Antennas for Interstitial Microwave Hyperthermia” published in IEEE Transactions on Microwave Theory and Techniques, IEEE Inc., New York, US, vol. 44, No. 6, Jun. 1, 1996.
Sylvain Labonte, Angeline Blais, Stephane R. Legault, Hassan O. Ali, and Langis Roy, “Monopole Antennas for Microwave Catheter Ablation” published in IEEE Transactions on Microwave Theory and Techniques, IEEE Inc., New York, US, vol. 44, No. 10, part 2, Oct. 1, 1996.
CNR Consiglio Nazionale deile Ricerche
Rollins Rosiland
The Bilicki Law Firm PC
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