Patent ID: 9463275
Filing Date: 2016-10-11
CPC Classification: A61M,F04B

Claim Text:
1. An infusion pump comprising a pump mechanism which presses an infusion tube to deliver an amount of infusion solution within the infusion tube, wherein the pump mechanism comprises: wherein when the primary finger is advanced and retracted, the tapered inclined surfaces of the primary finger and the inclined surfaces of the secondary fingers are arranged to slide in contact with each other, thereby causing the secondary fingers to move in conjunction with the movement of the primary finger in the directions orthogonal to the advancing and retracting direction of the primary finger, wherein, when the primary finger is advanced, the secondary fingers are retracted in proportion to a variation in an entire width of the infusion tube, and when the primary finger is retracted, the secondary fingers are advanced in proportion to the variation in the entire width of the infusion tube, and wherein, with an angle of inclination for the tapered inclined surfaces of the primary finger relative to a central axis being θ1, θ1 is set to satisfy θ1=tan