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Antenna coupler mechanism

  • US 10,084,227 B2
  • Filed: 11/11/2016
  • Issued: 09/25/2018
  • Est. Priority Date: 01/25/2012
  • Status: Active Grant
First Claim
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1. A tagged surgical tool comprising:

  • a metallic surgical tool having a length;

    an antenna coupler mechanism coupled to the metallic surgical tool, the antenna coupler mechanism comprising;

    a first tuning leg comprising a first inductive circuit element, the first tuning leg being configured to accept a radio frequency device in series with the first inductive circuit element;

    a second tuning leg comprising a second inductive circuit element and a capacitive circuit element connected in series, the second tuning leg being connected electrically in parallel with the first tuning leg; and

    a bottom plate comprising a third inductive circuit element connected electrically in parallel with the first tuning leg and connected electrically in parallel with the second tuning leg, the bottom plate being configured to couple energy into the metallic surgical tool; and

    a RF device coupled to the antenna coupler mechanism and having an operating wavelength that is approximately twice the length of the metallic surgical tool;

    wherein the antenna coupler mechanism defines an interface between the metallic surgical tool and the RF device, and the antenna coupler mechanism is conducive to energy coupling between the RF device and the metallic surgical tool.

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