Patent ID: 8496613
Filing Date: 2013-07-30
Classification: A61M,F04B

Abstract:
1. An infusion pump comprising: a tubing clamping section including a movable portion and a stationary portion; at least one sensor for detecting a contact length of tubing within at least one of the movable portion and the stationary portion; a shuttle including a shuttle stationary portion and a shuttle moveable portion configured for squeezing a length of the tubing between the shuttle stationary portion and the shuttle movable portion; a motor connected to the shuttle moveable portion via a shaft, wherein the motor moves the shuttle moveable portion towards and away from the shuttle stationary portion; a controller; and an encoder connected to the motor, wherein the encoder detects a position of the shaft that the controller uses to: (i) convert the position of the shaft detected by the encoder into a travel distance of the shuttle moveable portion, and (ii) calculate a diameter and a thickness of the tubing based upon the travel distance and the contact length of the tubing.