Power-stage antenna integrated system with high-strength shaft

• US 9,833,286 B2
• Filed: 05/28/2013
• Issued: 12/05/2017
• Est. Priority Date: 05/06/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Podhajsky, Ronald J.
• Primary Examiner(s): Stoklosa, Joseph
• Assistant Examiner(s): AVIGAN, ADAM JOSEPH
• Application Number:
  US13/903,668
• Publication Number:
  US 20130261617A1
• Time in Patent Office: 1,652 Days
• 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
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/1869 with an instrument interstitially inserted into the body, e.g. needles

Abstract

Disclosed is a microwave antenna assembly that includes proximal and distal radiating sections and a junction member. The proximal radiating section includes inner and outer conductors and DC power and neutral conductors. The inner conductor is disposed within the outer conductor and the DC power and neutral conductors are disposed radially outward therefrom. The junction member mates the distal and proximal radiating sections such that the distal and proximal radiating sections are positioned relative to one another. The junction member further includes a microwave signal amplifier (MSA) that receives a signal at a first energy level from the inner and outer conductors and a DC power signal from the DC power and neutral conductors. The MSA amplifies the signal from the first energy level to an additional, greater energy level. The junction member provides the microwave signal at the additional energy level to the proximal and distal radiating sections.

Claims

1. A microwave power-stage device for delivering microwave energy therapy comprising:

a delivery device handle having a proximal portion and a distal portion, the delivery device handle configured to be coupled to a DC power supply and a microwave signal generator;

a handle transmission line extending through the proximal portion of the delivery device handle;

a device transmission line having a distal portion and a proximal portion extending through the distal portion of the delivery device handle; and

an antenna coupled to the distal portion of the device transmission line and including;

a proximal radiating section;

a distal radiating section; and

a junction member interconnecting the proximal radiating section and the distal radiating section, wherein the junction member comprises a cylindrical amplifier configured to amplify a microwave signal received from the device transmission line.

2. The microwave power-stage device according to claim 1, wherein the proximal radiating section at least partially surrounds the junction member.

3. The microwave power-stage device according to claim 1, wherein both the proximal and distal radiating sections receive the amplified microwave signal from the junction member.

4. The microwave power-stage device according to claim 1, wherein the distal portion of the device transmission line includes an inner conductor and an outer conductor disposed about the inner conductor, the inner and outer conductors configured to transmit the microwave signal to the junction member.

5. The microwave power-stage device according to claim 4, wherein the distal portion of the device transmission line includes a DC power layer positioned radially outward from the outer conductor and configured to transmit DC power to the junction member.

6. The microwave power-stage device according to claim 5, wherein the DC power layer includes a DC positive trace and a DC negative trace.