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1. WO2022011090 - EASY TO MANUFACTURE AUTOCLAVABLE LED FOR OPTICAL TRACKING

Publication Number WO/2022/011090
Publication Date 13.01.2022
International Application No. PCT/US2021/040808
International Filing Date 08.07.2021
IPC
A61B 34/20 2016.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
CPC
A61B 2034/102
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
10Computer-aided planning, simulation or modelling of surgical operations
101Computer-aided simulation of surgical operations
102Modelling of surgical devices, implants or prosthesis
A61B 2034/105
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
10Computer-aided planning, simulation or modelling of surgical operations
101Computer-aided simulation of surgical operations
105Modelling of the patient, e.g. for ligaments or bones
A61B 2034/2048
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
2046Tracking techniques
2048using an accelerometer or inertia sensor
A61B 2034/2051
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
2046Tracking techniques
2051Electromagnetic tracking systems
A61B 2034/2055
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
2046Tracking techniques
2055Optical tracking systems
A61B 2034/252
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
25User interfaces for surgical systems
252indicating steps of a surgical procedure
Applicants
  • SMITH & NEPHEW, INC. [US]/[US]
  • SMITH & NEPHEW ORTHOPAEDICS AG [CH]/[CH]
  • SMITH & NEPHEW ASIA PACIFIC PTE. LIMITED [SG]/[SG]
Inventors
  • MARTI, Gaëtan
  • HÄLG, Maurice
  • GIRARD, Olivier
  • LAMBERT, Matthias
  • MATO SABAT, Marc
Agents
  • AHMED, Yousuf
  • HELMSEN, Joseph T.
Priority Data
63/049,31908.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) EASY TO MANUFACTURE AUTOCLAVABLE LED FOR OPTICAL TRACKING
(FR) DEL AUTOCLAVABLE FACILE À FABRIQUER POUR SUIVI OPTIQUE
Abstract
(EN) An optical tracking system is provided. The optical tracking system comprises an autoclavable fiducial marker assembly including an opaque housing, a light source, a window panel configured to refract light rays from the light source therethrough, and a metallized coating forming a hermetic seal at an interface of the window panel and the opaque housing. The fiducial marker assembly is configured to shield a peripheral edge of the window panel from the light rays. The system further comprises a tracking device comprising at least two optical sensors configured to detect a position of a light ray emitted by the light source. The system further comprises a processor configured to receive the position of the light rays from the optical sensors, shift the position of each light ray based on a calculated refraction deviation, and triangulate the location of the light source based on the shifted position of each light ray.
(FR) L'invention concerne un système de suivi optique. Le système de suivi optique comprend un ensemble marqueur fiduciaire autoclavable comprenant un boîtier opaque, une source de lumière, un panneau de fenêtre conçu pour réfracter à travers lui les rayons lumineux provenant de la source de lumière, et un revêtement métallisé formant un joint hermétique au niveau d'une interface du panneau de fenêtre et du boîtier opaque. L'ensemble marqueur fiduciaire est conçu pour protéger des rayons lumineux un bord périphérique du panneau de fenêtre. Le système comprend en outre un dispositif de suivi comprenant au moins deux capteurs optiques conçus pour détecter une position d'un rayon lumineux émis par la source de lumière. Le système comprend également un processeur conçu pour recevoir la position des rayons lumineux provenant des capteurs optiques, décaler la position de chaque rayon lumineux sur la base d'un écart de réfraction calculé, et trianguler l'emplacement de la source de lumière sur la base de la position décalée de chaque rayon lumineux.
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