Surgical generator for ultrasonic and electrosurgical devices
First Claim
Patent Images
1. 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 parallel with the first circuit portion; and
a memory device coupled to the first circuit portion.
1 Assignment
0 Petitions
Accused Products
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.
1410 Citations
28 Claims
-
1. 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 parallel with the first circuit portion; and a memory device coupled to the first circuit portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A surgical device, the surgical device comprising:
-
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 with the first switch; a second switch configured to switch between an open state and a closed state; and
a second resistor coupled with the second switch, wherein a combination of the first switch and the first resistor is coupled with a combination of the second switch and the second resistor;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 parallel with the first circuit portion; and a memory device coupled to the first circuit portion. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A surgical device, the surgical device comprising:
-
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 at least one of the first switch or the first resistor is coupled in series with at least one of the second switch or the second resistor; 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 parallel with the first circuit portion; and a memory device coupled to the first circuit portion. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
-
Specification