초록 ▼

The invention relates to a method and system for monitoring pressure conditions in the fluid pressure upstream and downstream of an intravenous fluid administration system and to detect upstream and/or downstream occlusions. In addition, the invention incorporates a method for detecting pressure con

The invention relates to a method and system for monitoring pressure conditions in the fluid pressure upstream and downstream of an intravenous fluid administration system and to detect upstream and/or downstream occlusions. In addition, the invention incorporates a method for detecting pressure conditions at an upstream or downstream detector across the wall of the tubing to identify upstream or downstream occlusions, respectively. The present invention also relates to a process for determining the fluid pressure in a fluid tube across the tube wall where the normal tube force changes over time, and more particularly, using a normalization process to eliminate changes in the tubing resilience.

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining the fluid pressure in a fluid tube of an infusion system where the fluid tube is partially compressed by a pressure sensor and the fluid tube exerts a tube force on the sensor that changes over time, the infusion system having a first and subseque

[ What is claimed is:] [1.] A method for determining the fluid pressure in a fluid tube of an infusion system where the fluid tube is partially compressed by a pressure sensor and the fluid tube exerts a tube force on the sensor that changes over time, the infusion system having a first and subsequent infusion cycles, comprising the steps of:a) determining an estimated tube force on the sensor due to the stiffness of the tube;b) acquiring a force measurement prior to an infusion cycle;c) determining if the force measurement prior to an infusion cycle is less than the estimated tube force including updating the estimated tube force, if the force measurement is less than the estimated tube force, as a function of the difference between the estimated tube force and the force measurement; andd) calculating and storing the fluid pressure as a function of at least the force measurement less the estimated tube force.