Temperature compensation system for regulating flow through tubing in a pump
AssigneeAbbott Laboratories
InventorsKenneth D. Briggs, Dean C. Pryce, Russel M. Sampson
Life of this patent
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Abstract
A peristaltic pump is provided with a housing, a pump head in the housing, and a receiving path defined along a housing and pump head for receiving tubing. Two spaced-apart temperature sensors are provided. One temperature sensor is located adjacent the tubing in a heat conduction path along which heat flows between the sensor and the tubing. The other sensor is located outside of the heat conduction path for sensing ambient temperature. The pump operating speed is adjusted as a function of the sensed temperatures. This accommodates the temperature-dependent rate of recovery of the tubing from its peristaltically deformed configuration to its original configuration.
Claims5
A peristaltic pump adapted to receive a tube, the pump comprising:
- a first temperature sensor constructed to be positioned adjacent a portion of a tube disposed within said peristaltic pump, said first temperature sensor constructed to detect a temperature of a tube disposed within said peristaltic pump;
- and
- a second temperature sensor constructed to detect an ambient temperature inside said peristaltic pump, said second temperature sensor positioned at a location thermally isolated from a tube disposed within said peristaltic pump.
A peristaltic pumping system comprising a tube constructed to be peristaltically deformed to cause a fluid within said tube to flow therethrough, a first temperature sensor positioned adjacent said tube for sensing a temperature of said tube, an electrical insulator positioned between said first temperature sensor and said tube, a peristaltic pump head constructed to peristaltically deform said tube, and a second temperature sensor constructed to detect an ambient temperature within said pumping system, said second temperature sensor being thermally isolated from said tube.
Dependencies are inferred from the claim text.