Infusion system with dual-chambered reservoir
First Claim
1. An infusion system, comprising:
- a drive assembly comprising;
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; and
a hydraulic assembly comprising a syringe assembly having a syringe barrel;
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;
a cap coupled to and sealing off a proximal end of the first fluid chamber;
a flexible movable divider positioned within the syringe barrel and sealing the first fluid chamber from the second fluid chamber; and
a plunger having a detachable handle and being movable relative to the divider within the syringe barrel;
wherein the force applied by the drive mechanism propels the fluid from the drive fluid reservoir through the length of tubing into the first fluid chamber to move the divider causing infusate to exit the second fluid chamber through the outlet port.
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Accused Products
Abstract
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.
12 Citations
25 Claims
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1. An infusion system, comprising:
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a drive assembly comprising; 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; and a hydraulic assembly comprising a syringe assembly having a syringe barrel; 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; a cap coupled to and sealing off a proximal end of the first fluid chamber; a flexible movable divider positioned within the syringe barrel and sealing the first fluid chamber from the second fluid chamber; and a plunger having a detachable handle and being movable relative to the divider within the syringe barrel; wherein the force applied by the drive mechanism propels the fluid from the drive fluid reservoir through the length of tubing into the first fluid chamber to move the divider causing infusate to exit the second fluid chamber through the outlet port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An infusion system, comprising:
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a drive assembly comprising; 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; and a hydraulic assembly comprising a syringe assembly having a syringe barrel; 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; a flexible movable divider positioned within the syringe barrel and sealing the first fluid chamber from the second fluid chamber; and a cap coupled to and sealing off a proximal end of the first fluid chamber; wherein the force applied by the drive mechanism propels the fluid from the drive fluid reservoir through the length of tubing into the first fluid chamber to move the divider causing infusate to exit the second fluid chamber through the outlet port. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification