Patent ID: 11965789
Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A force sensor comprising:
a beam including a proximal end portion, a distal end portion, and a first face between the proximal end portion of the beam and the distal end portion of the beam;
a first bridge circuit on the first face of the beam;
a first measurement signal lead line; and
a second measurement signal lead line;
wherein the first bridge circuit includes a first tension strain gauge resistor, a second tension strain gauge resistor, a first compression strain gauge resistor, and a second compression strain gauge resistor;
wherein the first tension strain gauge resistor and the first compression strain gauge resistor are located at the proximal end portion of the beam;
wherein the second tension strain gauge resistor and the second compression strain gauge resistor are located at the distal end portion of the beam;
wherein the first measurement signal lead line is mechanically isolated from the beam;
wherein the first measurement signal lead line electrically couples the first compression strain gauge resistor and the second compression strain gauge resistor; and
wherein the second measurement signal lead line is mechanically isolated from the beam;
wherein the second measurement signal lead line electrically couples the first tension strain gauge resistor and the second tension strain gauge resistor.