# US 9,039,693 B2 · Handheld medical devices including microwave amplifier unit at device handle

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- Number: US 9,039,693 B2
- Document ID: US9039693B2
- Status: Granted
- Kind: B2
- Application number: 13/237,187
- Filed: 2011-09-20
- Published: 2013-03-21
- Granted: 2015-05-26
- Earliest claimed: 2011-09-20
- Assignees: Covidien LP
- Applicants: Robert J. Behnke, II; Jeffrey L. Jensen; Scott E. M. Frushour; Wayne L. Moul
- Inventors: Robert J. Behnke, II; Jeffrey L. Jensen; Scott E. M. Frushour; Wayne L. Moul
- Web page: https://patentgrep.com/patent/US9039693B2

## CPC

- A61B 18/1815: {using microwaves}
- A61B 2018/00922: {by switching or controlling the treatment energy directly within the hand-piece}
- A61B 2018/1823: {Generators therefor}
- A61B 2090/0807: {Indication means}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A system includes a microwave signal generator and a medical device. The medical device includes a handle assembly, a microwave-signal-amplifying module, and a probe. The microwave-signal-amplifying module includes a microwave amplifier unit. The microwave amplifier unit is adapted to amplify a high-frequency input signal to generate a high-frequency output signal. The microwave amplifier unit is disposed within the handle assembly. The probe extends distally from the distal end of the handle assembly and is operably coupled to an output of the microwave-signal-amplifying module.

## Claims

### Claim 1

A system, comprising:
a microwave signal generator; and
a medical device, including:
a handle assembly including a first plurality of electrical contacts disposed thereon;
a microwave-signal-amplifying module including:
a microwave amplifier unit disposed within the handle assembly adapted to amplify a high-frequency input signal to generate a high-frequency output signal; and
a second plurality of electrical contacts coupled to the microwave amplifier being selectively engageable with the first plurality of electrical contacts of the handle assembly; and
a probe extending distally from a distal end of the handle assembly and operably coupled to an output of the microwave-signal-amplifying module;
wherein the microwave-signal-amplifying module is selectively removable from the handle assembly.

### Claim 2 (depends on 1)

The system of claim 1, wherein an output of the microwave amplifier unit is electrically-coupled to the output of the microwave-signal-amplifying module.

### Claim 3 (depends on 2)

The system of claim 2, wherein the microwave amplifier unit includes a solid-state amplifier having at least one high-frequency switching element.

### Claim 4 (depends on 3)

The system of claim 3, wherein the at least one high-frequency switching element includes at least one Gallium Nitride Metal-Oxide Semiconductor Field-Effect Transistor (GaN MOSFET).

### Claim 5 (depends on 1)

The system of claim 1, wherein the microwave-signal-amplifying module further includes a signal generator capable of generating high-frequency signals to be transmitted to an input of the microwave amplifier unit.

### Claim 6 (depends on 5)

The system of claim 5, wherein the handle assembly is adapted to allow the user to select a signal source for high-frequency signals to be received at an input of the microwave amplifier unit.

### Claim 7 (depends on 6)

The system of claim 6, further comprising a switch adapted to enable a user to selectively switch between the signal generator and an external source of high-frequency signals.

### Claim 8 (depends on 1)

The system of claim 1, further comprising a controller electrically-coupled to the microwave-signal-amplifying module and adapted to control at least one operating parameter associated with the microwave-signal-amplifying module.

### Claim 9 (depends on 8)

The system of claim 8, wherein the at least one operating parameter is selected from the group consisting of temperature, impedance, power, current, voltage, mode of operation, and duration of application of electromagnetic energy.

### Claim 10 (depends on 8)

The system of claim 8, further comprising a user interface including a screen associated with the handle assembly, the screen communicatively-coupled to the controller.

### Claim 11 (depends on 10)

The system of claim 10, wherein the user interface is adapted to enable at least one electrical signal indicative of user input to be transmitted to the controller.

### Claim 12 (depends on 1)

The system of claim 1, wherein the microwave-signal-amplifying module includes a first connector portion including a first electrical connector suitable for electrically-coupling the microwave-signal-amplifying module to the probe.

### Claim 13 (depends on 12)

The system of claim 12, wherein the microwave-signal-amplifying module includes a second connector portion including a second electrical connector suitable for receiving a high-frequency signal generated by the microwave signal generator, wherein the microwave-signal-amplifying module is adapted to provide an electrical connection between the second electrical connector and the microwave amplifier unit.