SYRINGE PUMP WITH IMPROVED FLOW MONITORING

摘要

A syringe pump provides a controlled metering of the medicament from a syringe by movement of the syringe plunger while also measuring flow from the syringe with a flow sensor. Simultaneous monitoring of flow command implicit in control of the syringe plunger and an actual flow provides additional safety and detection of irregularities in the delivery of the medicament.

主权项

1. A syringe pump comprising:
a housing adapted to hold a syringe holding a liquid medicament; a motor drive attached to the housing having a portion adapted to hold a plunger portion of the syringe to move the plunger portion within a tube portion of the syringe according to a motor drive signal to eject the medicament from the syringe; a flow sensor adjacent to a flow of medicament from the syringe to monitor the flow; and an electronic controller communicating with the motor drive and the flow sensor to detect a flow error and to deactivate or adjust the motor drive upon detection of the flow error.