Steerable endoscope and improved method of insertion

Details Steerable endoscope and improved method of insertion Steerable endoscope and improved method of insertion

A - Human Necessities

61

B

A61B 1/005 (2006.01) A61B 1/008 (2006.01) A61B 1/01 (2006.01) A61B 1/31 (2006.01) A61B 1/00 (2006.01)

Patent

CA 2406850

A steerable endoscope has an elongated body (102) with a selectively steerable distal portion (104) and an automatically controlled proximal portion (104). The endoscope body is inserted into a patient and the selectively steerable distal portion is used to select a desired path within the patient's body. When the endoscope body is advanced, an electronic motion controller (140) operates the automatically controlled proximal portion to assume the selected curve of the selectively steerable distal portion. Another desired path is selected with the selectively steerable distal portion and the endoscope body is advanced again. As the endoscope body is further advanced, the selected curves propagate proximally along the endoscope body, and when the endoscope body is withdrawn proximally, the selected curves propagate distally along the endoscope body. This creates a serpentine motion in the endoscope body that allows it to negotiate tortuous curves along a desired path through or around and between organs within the body.

Cette invention concerne un endoscope orientable comportant un corps de forme allongée avec un partie distale sélectivement orientable et une partie proximale commandée automatiquement. Après insertion de l'endoscope, on utilise la partie distale sélectivement orientable pour emprunter le tracé voulu dans le corps du patient. Lorsque le corps de l'endoscope est en place, un contrôleur électronique de mouvements agit sur la partie proximale à commande automatique pour épouser la courbe sélectionnée de la partie distale sélectivement orientable. Toujours avec cette partie distale sélectivement orientable, on choisit une autre trajet et l'on fait avancer de nouveau le corps de l'endoscope. Au fur et a mesure que le corps de l'endoscope progresse, les courbures choisies se propagent proximalement le long du corps de l'endoscope. A l'inverse, lorsque le corps de l'endoscope est retiré proximalement, les courbures choisies se propagent distalement le long dudit corps. Il en résulte un mouvement de serpentement du corps de l'endoscope qui peut ainsi négocier des courbes tortueuses sur le trajet choisi au travers, autour ou entre des organes du corps.

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