PROBLEM TO BE SOLVED: To provide an endoscopic propulsion device that has a simple structure with light weight and transforms following the bend of an insertion tube, and thereby does not prevent the movement of the insertion tube, facilitates operation and reduces a patients physical burden.SOLUTION: A pair of front and rear stoppers 5, 6 is inserted and attached in the tip side of an insertion tube 3 constituting an endoscope, a pair of front and rear magnetic rings 7, 8 is reciprocatably inserted and fitted between the pair of front and rear stoppers 5, 6, and a propellant 9 is reciprocatably inserted and fitted between the pair of front and rear magnetic rings 7, 8. The propellant 9 comprises an annular substrate 10, two or more propulsion arms 11 separately disposed in the circumferential direction on an outer circumferential edge of the annular substrate 10, and a pair of actuating rings 13 disposed oppositely to both surface sides of the annular substrate 10 and having one hand connected to a base end side of the propulsion arm 11. The pair of front and rear stoppers 5, 6 and the magnetic rings 7, 8 are alternately brought into abutment with the actuating ring 13 by the conversion control of polarity and the longitudinal movement thereof, and thereby the propulsion arm 11 is made to perform expansion and contraction operation.COPYRIGHT: (C)2015,JPO&INPIT【課題】構造が簡単で軽量であり、挿入管の屈曲に追随して変形するので挿入管の動きを妨げることが無く、操作が容易で患者の身体的負担も小さい内視鏡用推進装置を提供する。【解決手段】内視鏡を構成する挿入管3の先端側に前後一対のストッパー5、6を挿着し、一対のストッパー5、6間に前後一対の磁性環体7、8を進退可能に挿嵌し、一対の磁性環体7、8間に推進体9を進退可能に挿嵌してある。推進体9は環状基板10と、環状基板10の外周縁に周方向に離間して配設した複数の推進腕11と、環状基板10の両側面に対向して配置され、一方が推進腕11の基端側に連結された一対の作動リング13とから構成してある。一対のストッパー5、6及び磁性環体7、8は極性を変換制御して前後動させることにより作動リング13に交互に当接させて推進腕11を拡縮動作させる。【選択図】図2
