摘要:
A self-propelled device nips an endless belt between a worm wheel and a driven roller. The endless belt is circulated by rotating the worm wheel, and thereby an insertion section of an endoscope advances and retreats inside a body cavity. The driven roller has a width larger than the worm wheel, and is provided with a pair of flanges at both ends. The worm wheel is disposed between the pair of flanges. When the endless belt is nipped between the worm wheel and the driven roller, the endless belt is deformed by the pair of flanges.
摘要:
An insertion assisting device includes a rotary body formed in a toroidal shape, and a support and drive unit that rotatably supports and rotates the rotary body. The support and drive unit has two supports, a first support and a second support. The first support is formed in a substantially cylindrical shape, and rotatably supports the rotary body. The second support is formed in a substantially triangular tubular shape, is arranged inside the first support, and supports driving gears that transmit a driving force to the rotary body. The second support is shorter than the first support, and is arranged so that front and rear end portions thereof are located inside front and rear end portions of the first support.
摘要:
An aspect of the actuator for the moving body in tube according to the present invention is characterized by including: a first expansion/contraction member which includes a first portion that fills between the moving body in tube and the tube wall at the time of being expanded to come into contact with the tube wall, and a second portion that is brought into contact with the tube wall to generate propulsive force, and a part of which is fixed to the moving body in tube; a drive device which drives the first expansion/contraction member; and a control section which controls the first expansion/contraction member and the drive device, and is characterized in that the control section performs control so that the first portion of the first expansion/contraction member is made to become the second portion by the drive by the drive device so as to change the relative position between the moving body in tube and the tube wall.
摘要:
An endoscope has a long slender insertion section to be inserted in a body cavity. The insertion section is composed by connecting a flexible portion to a distal portion having a CCD image sensor with a bending portion. Inserted through the insertion section are an air/water tube, a signal cable and other long slender contents. The air/water tube is enlarged in diameter in an area of the bending portion, and increases a filling rate of the contents in the bending portion.