IN SITU TUBING MEASUREMENTS FOR INFUSION PUMPS
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
An infusion pump having a tubing clamping section including a movable and a stationary portion. The infusion pump includes at least one sensor for detecting a contact length of tubing within the movable and/or the stationary portion. The infusion pump includes a shuttle having a shuttle stationary and a shuttle moveable portion, and is configured to squeeze a length of the tubing between the shuttle portions. The infusion pump includes a motor connected to the shuttle moveable portion via a shaft. The motor moves the shuttle moveable portion towards and away from the shuttle stationary portion. The infusion pump includes a controller and an encoder that detects a position of the shaft. The controller converts the detected position into a travel distance of the shuttle moveable portion, and calculates a diameter and a thickness of the tubing based on the travel distance and the contact length of the tubing.
4 Citations
20 Claims
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1. An infusion pump comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An infusion pump comprising:
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a tubing clamping section comprising a movable portion and a stationary portion; and a controller configured to; (i) control a motor to move the moveable portion toward and away from the stationary portion, the motor connected to the moveable portion via a shaft; (ii) receive from at least one sensor a signal indicative of a contact length of tubing within at least one of the movable portion and the stationary portion; (iii) receive from an encoder a signal indicative of a position of a shaft connected to the motor; (iv) determine a travel distance of the moveable portion based upon the position of the shaft detected by the encoder; and (v) calculate a diameter and a thickness of the tubing based upon the travel distance and the contact length of the tubing. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of measuring tubing comprising:
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compressing the tubing between opposed surfaces of a fixture; receiving a signal indicative of a position of a shaft of a motor compressing the tubing; receiving a signal indicative of a contact length of the tubing lying against at least one of the opposed surfaces; determining an amount of compression of the tubing based upon the position of the shaft; and calculating at least one of a diameter and a thickness of the tubing based upon the contact length and the amount of compression. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification