摘要:
Provided is a unit used in a surgical operation using an endoscope, for example, to position the distal end of a surgical instrument to the region of a human body where medical treatment is required, without spreading a hole formed in the human body for insertion of the surgical instrument. This unit includes first and second output shafts pivotally connected to a movable member of the surgical instrument or the like, the first and second output shafts extending parallel to each other and being capable of reciprocating, and a drive unit for giving the first output shaft an arbitrary amount of advance/retraction and constantly giving the second output shaft an amount of advance/retraction of a constant ratio (≠1) with respect to the amount of advance/retraction given to the first output shaft.
摘要:
A three-dimensional image display device capable of forming images at a higher rate is provided by reducing amount of operation for forming images. The three-dimensional display device comprising: a convex lens array 2 where a plurality of convex lenses 2a are arranged, an image display means 3 arranged on or near a focal plane of the lens array 2, an operating means to calculate the farthest point Pi from the image display means 3 among points intersecting the object image to be displayed, on a line L starting from a pixel on the image display means 3 passing through the center of the curvature of the convex surface of a plurality of said respective convex lens and heading toward the object image to be displayed in the predetermined three-dimensional space via center Cj of the curvature of the convex surface of a plurality of respective convex lens 2a, and an image controlling means for instructing to display corresponding pixels Cij on the image display means 3 based on the image information Pi calculated by the operating means. A light shielding plate 12 where a plurality of pin holes are arranged, can be employed in place of the lens array 2.
摘要:
The front end portion of a bending action member and manipulator is constituted of multi-slider linkage mechanism which starts the operation of a second articulation portion at its rear end side after the bending action of a first articulation portion on the front end side ends. A guide link portion 26 which covers a link member 23 to guide it through a sliding contact is sealed in a hollow portion to prevent leakage of air. In multi-slider linkage mechanism, two frames at a joint portion are formed in forward taper to set the magnitude of a moment required for starting the bending action of a second articulation portion larger than a moment required for the bending action of the first articulation portion. The manipulator is comprised of an actuator portion and a bending forceps portion and capable of engaging/disengaging each other. The actuator portion is provided with a joint arm 13 having a plate containing a fitting hole for connecting the motor with the link member 23. A connecting pin 21 is provided at an end on the engagement/disengagement side of the link member 23 inside the bending forceps portion and fitted to a fitting hole 13c in an elastic body 13a of the joint arm 13, so that the motor and the link member 23 are connectable/separable.
摘要:
A three-dimensional image display device capable of forming images at a higher rate is provided by reducing amount of operation for forming images. The three-dimensional display device comprising: a convex lens array 2 where a plurality of convex lenses 2a are arranged, an image display means 3 arranged on or near a focal plane of the lens array 2, an operating means to calculate the farthest point Pi from the image display means 3 among points intersecting the object image to be displayed, on a line L starting from a pixel on the image display means 3 passing through the center of the curvature of the convex surface of a plurality of said respective convex lens and heading toward the object image to be displayed in the predetermined three-dimensional space via center Cj of the curvature of the convex surface of a plurality of respective convex lens 2a, and an image controlling means for instructing to display corresponding pixels Cij on the image display means 3 based on the image information Pi calculated by the operating means. A light shielding plate 12 where a plurality of pin holes are arranged, can be employed in place of the lens array 2.