Robotic surgery system including position sensors using fiber bragg gratings
First Claim
1. A calibration method for a surgical instrument mounted on a robotic manipulator comprising:
- positioning the surgical instrument using a control system in a minimally invasive surgical system, wherein the surgical instrument comprises;
an elongate arm having a joint region, andan optical fiber bend sensor positioned in a sensor region that is at least in part within the joint region, wherein the optical fiber bend sensor translates axially relative to the joint region in response to bending of the joint region, and wherein a length of the sensor region exceeds a length of the joint region;
determining a measured location of the surgical instrument based on information from the optical fiber bend sensor;
determining an expected location of the surgical instrument based on the positioning; and
generating a kinematic error map of the elongate arm using the measured location and the expected location.
0 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument is provided, including: at least one articulatable arm having a distal end, a proximal end, and at least one joint region disposed between the distal and proximal ends; an optical fiber bend sensor provided in the at least one joint region of the at least one articulatable arm; a detection system coupled to the optical fiber bend sensor, said detection system comprising a light source and a light detector for detecting light reflected by or transmitted through the optical fiber bend sensor to determine a position of at least one joint region of the at least one articulatable arm based on the detected light reflected by or transmitted through the optical fiber bend sensor; and a control system comprising a servo controller for effectuating movement of the arm.
213 Citations
14 Claims
-
1. A calibration method for a surgical instrument mounted on a robotic manipulator comprising:
-
positioning the surgical instrument using a control system in a minimally invasive surgical system, wherein the surgical instrument comprises; an elongate arm having a joint region, and an optical fiber bend sensor positioned in a sensor region that is at least in part within the joint region, wherein the optical fiber bend sensor translates axially relative to the joint region in response to bending of the joint region, and wherein a length of the sensor region exceeds a length of the joint region; determining a measured location of the surgical instrument based on information from the optical fiber bend sensor; determining an expected location of the surgical instrument based on the positioning; and generating a kinematic error map of the elongate arm using the measured location and the expected location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus comprising:
-
a robotic manipulator; and a surgical instrument mounted on the robotic manipulator, the surgical instrument comprising; an elongate arm having a joint region; an optical fiber bend sensor positioned in a sensor region that is at least in part within the joint region, wherein the optical fiber bend sensor translates axially relative to the joint region in response to bending of the joint region, and wherein a length of the sensor region exceeds a length of the joint region; and a memory having stored therein a kinematic error map of the elongate arm, wherein the kinematic error map is created by; positioning the surgical instrument using a control system in a minimally invasive surgical system; determining a measured location of the surgical instrument based on information from the optical fiber bend sensor; determining an expected location of the surgical instrument based on the positioning; and generating the kinematic error map of the elongate arm using the measured location and the expected location. - View Dependent Claims (12, 13)
-
-
14. A method for a surgical instrument mounted on a robotic manipulator comprising:
-
generating a kinematic error map of a elongate arm of the surgical instrument using location data and expected location data, wherein the location data is determined based on information from an optical fiber bend sensor positioned in a sensor region that is at least in part within a joint region of the elongate arm, wherein the optical fiber bend sensor translates axially relative to the joint region in response to bending of the joint region, and wherein a length of the sensor region exceeds a length of the joint region; wherein the expected location information is determined based on a position of the elongate arm; and storing the kinematic error map in a memory of the surgical instrument.
-
Specification