Infusion system with dual-chambered reservoir

摘要

Described herein are medical fluid infusion systems for pumping a fluid to a patient, such as in a hospital environment. In one aspect, disclosed is an infusion system including a drive assembly having a drive fluid reservoir and a drive mechanism configured to apply a force to drive fluid from the drive fluid reservoir through a length of tubing. The infusion system includes a hydraulic assembly having a first fluid chamber having an inlet port configured to be in fluid communication with the length of tubing and a second fluid chamber having an outlet port configured to be in fluid communication with a patient extension set and a flexible movable divider sealing the first fluid chamber from the second fluid chamber. Related apparatus, systems, techniques and articles are also described.

主权项

1. An infusion system, comprising:
a drive assembly comprising:
a drive fluid reservoir; anda drive mechanism configured to apply a force to drive fluid from the drive fluid reservoir through a length of tubing; and a hydraulic assembly comprising:
a first fluid chamber having an inlet port configured to be in fluid communication with the drive fluid reservoir through the length of tubing;a second fluid chamber having an outlet port configured to be in fluid communication with a patient extension set; anda flexible movable divider sealing the first fluid chamber from the second fluid chamberwherein the hydraulic assembly comprises a bag formed by a first flexible layer, a second flexible layer and a third flexible layer, wherein perimeter sealing of the first and second flexible layers forms the first fluid chamber, and wherein perimeter sealing of the second and third flexible layers forms the second fluid chamber, and wherein the second flexible layer is the flexible movable divider.