Power-Stage Antenna Integrated System

• US 20100286681A1
• Filed: 05/06/2009
• Published: 11/11/2010
• Est. Priority Date: 05/06/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Vivant Medical, Inc. (Johnson Controls International plc)
• Inventors: Podhajsky, Ronald J.
• Granted Patent: US 8,353,903 B2
• Time in Patent Office: Days
• US Class Current: 606/33
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/1815 using microwaves

Abstract

Disclosed is a system for generating and delivery electrosurgical energy, the system including a microwave generator and a power-stage device. The microwave generator further including a microwave signal generator configured to generate a microwave frequency signal at a first power level and a DC power supply configured to generate a DC power signal. The power-stage device connects to the microwave signal generator by a transmission line and is configured to receive the microwave frequency signal and the DC power signal from the transmission line. The power-stage device further including a power-stage microwave signal amplifier configured to amplify the microwave frequency signal from the first power level to at least one second power level and a microwave antenna configured to transmit the microwave frequency signal.

Claims

1. A system for generating microwave energy, the system comprising:

a microwave generator including;

a microwave signal generator configured to generate a microwave frequency signal at a first power level; and

a DC power supply configured to generate a DC power signal;

a power-stage device connected to the microwave signal generator by a transmission line, the power-stage device configured to receive the microwave frequency signal and the DC power signal from the transmission line, the power-stage device including;

a power-stage microwave signal amplifier configured to amplify the microwave frequency signal from the first power level to at least one second power level; and

a microwave antenna configured to transmit the microwave frequency signal.

2. The system according to claim 1, wherein the ratio between the first power level and the second power level of the microwave frequency signal is between about 1:

10 and about 10;

1.

3. The system according to claim 2, wherein the microwave generator further includes a processor configured to selectively control the first power level and the second power level.

4. The system according to claim 2, wherein the processor is configured to dynamically control the first power level, the second power level and the ratio therebetween.

5. The system according to claim 1, wherein the power-stage device farther includes:

a handle configured to house the power-stage microwave signal amplifier; and

a power-stage device transmission line configured to delivery the microwave frequency signal from the power-stage microwave signal amplifier to the microwave antenna.

6. The system according to claim 1, wherein the microwave antenna in the power-stage device further includes:

a proximal radiating section;

a distal radiating section distally spaced from the proximal radiating section, and

an antenna power amplifier configured to mate the proximal and distal radiating sections, the antenna power amplifier configured to house the power-stage microwave signal amplifier.

7. The system according to claim 6, wherein the power-stage device further includes a device transmission line configured to transfer the microwave frequency signal and the DC power signal from the transmission line to the antenna power amplifier.

8. The system according to claim 7, wherein the device transmission line further includes:

at least one microwave waveguide; and

at least one DC power conductor,

wherein the at least one microwave waveguide and at least one DC power conductor extend longitudinally through the device transmission line, the at least one microwave waveguide configured to deliver the microwave frequency signal to the antenna power amplifier and the at least one DC power conductor configured to deliver a DC power signal to the antenna power amplifier.

9. The system according to claim 6, wherein at least a portion of antenna power amplifier is positioned between the proximal radiating section and the distal radiating section.

10. The system according to claim 6, wherein the antenna power amplifier connects to the proximal radiating section and to the distal radiating section and provides the microwave frequency signal at the at least one second power level to the thereto.

11. A system for generating microwave energy, the system comprising:

a microwave generator including;

a microwave signal generator configured to generate a microwave frequency signal;

a DC power supply configured to generate a DC power signal; and

a microwave signal amplifier configured to amplify the microwave frequency signal to a first power level;

a power-stage device connected to the microwave generator by a transmission line and configured to receive the microwave frequency signal and DC power signal from the transmission line, the power-state delivery device including;

a microwave signal amplifier configured to amplify the microwave frequency signal from the first power level to at least one second power level; and

a microwave antenna configured to transmit the microwave frequency signal.