Force estimation for a minimally invasive robotic surgery...

A - Human Necessities – 61 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61B 19/00 (2006.01) B25J 9/04 (2006.01)

Patent

CA 2664997

A method of force estimation for a minimally invasive medical system comprising a robot manipulator (10). The manipulator has an effector unit (12) equipped with a 6-degrees-of- freedom (DOF) force/torque sensor and is configured to hold a minimally invasive instrument (14) having a first end (16) mounted to the effector unit and a second end (20) located beyond an external fulcrum (23) that limits the instrument in motion, usually to 4 DOF. The method comprising the steps: - determining a position of the instrument relative to the fulcrum; - measuring by means of the 6-DOF force/torque sensor a force and a torque exerted onto the effector unit by the first end of the instrument; and - calculating by means of the principle of superposition an estimate of a force exerted onto the second end of the instrument based on the determined position, the measured force and the measured torque.

La présente invention concerne un procédé d'estimation de la force, destiné à un dispositif médical le moins invasif possible comportant un robot manipulateur (10). Le manipulateur comporte une unité effectrice (12) dotée d'un capteur de force/couple à six degrés de liberté (DDL) et est conçu pour le maintien d'un instrument le moins invasif possible (14) présentant une première extrémité (16) montée sur l'unité effectrice et une seconde extrémité (20) située au-delà d'un point d'appui externe (23) limitant le mouvement de l'instrument, généralement à 4 DDL. Le procédé consiste à : - déterminer une position de l'instrument par rapport au point d'appui; - mesurer au moyen du capteur de force/couple à six DDL la force et le couple exercés sur l'unité effectrice par la première extrémité de l'instrument; et - estimer, par le principe de superposition, une force exercée sur la seconde extrémité de l'instrument sur la base de la position déterminée, de la force mesurée et du couple mesuré.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Force estimation for a minimally invasive robotic surgery... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Force estimation for a minimally invasive robotic surgery..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Force estimation for a minimally invasive robotic surgery... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1629243

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.