×

Battery-powered electrosurgical forceps with multi-turn selectable-ratio transformer

  • US 9,737,354 B2
  • Filed: 09/03/2015
  • Issued: 08/22/2017
  • Est. Priority Date: 01/12/2010
  • Status: Active Grant
First Claim
Patent Images

1. An electrocautery surgical device, comprising:

  • a battery power source; and

    radio-frequency signal generating circuitry electrically coupled to the battery power source and operable to deliver power to an electrosurgical forceps, the radio-frequency signal generating circuitry comprising;

    a transformer having a primary winding and a secondary winding, the secondary winding being comprised of a first secondary sub-winding and a second secondary sub-winding;

    at least one switching component electrically coupled to the first and second secondary sub-windings and operable to switch between engaging the first secondary sub-winding and engaging the second secondary sub-winding such that a current induced by the primary winding flows through either the first secondary sub-winding or the second secondary sub-winding; and

    the first and second secondary sub-windings having a different number of turns such that the radio-frequency signal generating circuitry produces a different impedance value depending on which of the first or second secondary sub-windings is engaged.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×