Surgical instrument with wireless communication between control unit and sensor transponders

  • US 11,006,951 B2
  • Filed: 09/22/2014
  • Issued: 05/18/2021
  • Est. Priority Date: 01/10/2007
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument comprising:

  • a control unit disposed in a portion of the surgical instrument, the control unit comprising a first inductive element, wherein the first inductive element is configured to produce a magnetic field;

    a shaft connected to the portion of the surgical instrument in which the control unit is disposed; and

    an end effector connected to the shaft, the end effector comprising a fireable cartridge and an electronic component that comprises;

    a sensor for sensing a state of the cartridge;

    electronic circuitry connected to the sensor; and

    a second inductive element that is inductively coupled to the first inductive element of the control unit, wherein;

    the second inductive element is connected to the electronic circuitry of the electronic component such that the magnetic field produced by the first inductive element of the control unit powers the electronic circuitry of the electronic component via electromagnetic induction;

    the shaft electrically couples the first inductive element to the second inductive element to power the electronic circuitry;

    the control unit is configured to interrogate the electronic circuitry via an interrogation signal transmitted from the first inductive element to the second inductive element, wherein the electronic circuitry is configured to wirelessly report the state of the cartridge to the control unit via a reply signal transmitted from the second inductive element to the first inductive element when the electronic circuitry is interrogated by the control unit; and

    the control unit is configured to receive the reply signal from the electronic circuitry in response to the interrogation and control actuation of the end effector based on the sensed state of the cartridge from the sensor such that the control unit prevents actuation of the end effector when the cartridge is determined to be in a fired state and permits actuation of the end effector when the cartridge is determined to be in a unfired state.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×