Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007141784 - CONTROLLED STEERING OF A FLEXIBLE NEEDLE

Publication Number WO/2007/141784
Publication Date 13.12.2007
International Application No. PCT/IL2007/000682
International Filing Date 05.06.2007
IPC
A61F 2/32 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
30Joints
32for the hip
CPC
A61B 17/3403
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
34Trocars; Puncturing needles
3403Needle locating or guiding means
A61B 17/3478
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
34Trocars; Puncturing needles
3478Endoscopic needles, e.g. for infusion
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 2034/107
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
107Visualisation of planned trajectories or target regions
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 2034/304
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
30Surgical robots
304including a freely orientable platform, e.g. so called 'Stewart platforms'
Applicants
  • TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD. [IL]/[IL] (AllExceptUS)
  • GLOZMAN, Daniel [IL]/[IL] (UsOnly)
  • SHOHAM, Moshe [IL]/[IL] (UsOnly)
Inventors
  • GLOZMAN, Daniel
  • SHOHAM, Moshe
Agents
  • SECEMSKI, Dr. Ephraim
Priority Data
60/810,70505.06.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTROLLED STEERING OF A FLEXIBLE NEEDLE
(FR) guidage contrôlé d'une aiguille flexible
Abstract
(EN)
A robotic system for steering a flexible needle during insertion into soft-tissue using imaging to determine the needle position. The control system calculates a needle tip trajectory that hits the desired target while avoiding potentially dangerous obstacles en route. Using an inverse kinematics algorithm, the maneuvers required of the needle base to cause the tip to follow this trajectory are calculated, such that the robot can perform controlled needle insertion. The insertion of a flexible needle into a deformable tissue is modeled as a linear beam supported by virtual springs, where the stiffness coefficients of the springs varies along the needle. The forward and inverse kinematics of the needle are solved analytically, enabling both path planning and correction in real-time. The needle shape is detected by image processing performed on fluoroscopic images. The stiffness properties of the tissue are calculated from the measured shape of the needle.
(FR)
L'invention concerne un système de robotique permettant de guider une aiguille flexible pendant son insertion dans un tissu mou utilisant l'imagerie pour déterminer la position de l'aiguille. Le système de commande calcule une trajectoire de pointe d'aiguille qui atteint la cible désirée tout en évitant les obstacles potentiellement dangereux en route. A l'aide d'un algorithme de cinématique inverse, les manœuvres requises de la base de l'aiguille pour que la pointe suive cette trajectoire sont calculées, de telle sorte que le robot puisse réaliser une insertion de l'aiguille contrôlée. L'insertion d'une aiguille flexible dans un tissu déformable est modélisée comme un faisceau linéaire supporté par des ressorts virtuels, les coefficients de rigidité des ressorts variant le long de l'aiguille. Les cinématiques directes et inverses de l'aiguille sont résolues de façon analytique, permettant à la fois une planification du trajet et une correction en temps réel. La forme de l'aiguille est détectée par un traitement d'image réalisé sur des images fluoroscopiques. Les propriétés de rigidité du tissu sont calculées à partir de la forme mesurée de l'aiguille.
Latest bibliographic data on file with the International Bureau