Back to results
US 9,168,054 B2Granted
Surgical generator for ultrasonic and electrosurgical devices
AssigneeEthicon Endo-Surgery, Inc.
InventorsDouglas J. Turner, Jeffrey L. Aldridge, Vincent P. Battaglia, Jr.
Life of this patent
Estimating the term…
Abstract
A control circuit of a surgical device is disclosed. The control circuit includes a first circuit portion coupled to at least one switch operable between an open state and a closed state. The first circuit portion communicates with a surgical generator over a conductor pair to receive a control signal to determine a state of the at least one switch.
Claims7
A surgical device, the surgical device comprising:
- an end effector to act on tissue;
- and
- a control circuit configured for communication with a surgical generator, the control circuit comprising:
- a conductor pair to communicate with the surgical generator;
- a first circuit portion comprising:
- a first switch configured to switch between an open state and a closed state;
- a first resistor coupled in parallel with the first switch;
- a second switch configured to switch between an open state and a closed state;
- and
- a second resistor coupled in parallel with the second switch, wherein a combination of the first switch and the first resistor is coupled in series with a combination of the second switch and the second resistor;
- a voltage reference coupled in parallel with the first circuit portion, wherein the control circuit is configured to receive from the generator and over the conductor pair an interrogation signal, wherein a state of at least one of the first switch or the second switch is determined from at least one characteristic of the interrogation signal;
- a capacitor coupled in parallel with the first circuit portion;
- a resistor coupled in series with the first circuit portion;
- and
- a memory device coupled to the first circuit portion.
12 more elements
Dependencies are inferred from the claim text.