Fluid control system
AssigneeAnalog Devices, Inc.
InventorsVikram Venkatadri, David Frank Bolognia
Life of this patent
Estimating the term…
Abstract
A flow meter is disclosed. The flow meter can include a housing that has a cavity. The flow meter can also include a deformable tube that is disposed in the cavity. The deformable tube can comprise a portion of a flow path of a fluid substance. The flow meter can further include a cam that is rotatably coupled to the housing. A portion of the cam is configured to press against a portion of the collapsible tube so as to deform the portion of the collapsible tube. The cam can be configured to rotate in response to a flow of the fluid substance in the flow path.
Claims20
A flow meter comprising:
- a housing having a cavity;
- a deformable tube disposed in the cavity, the deformable tube comprising a portion of a flow path of a fluid substance;
- a cam rotatably coupled to the housing, a portion of the cam configured to press against a portion of the deformable tube so as to deform the portion of the deformable tube, the cam configured to rotate in response to a flow of the fluid substance in the flow path;
- and
- an actuator configured to assist in the rotation of the cam.
A fluid delivery system to deliver a biocompatible fluid comprising:
- a flow meter positioned at a first location of a flow path of a fluid substance, the flow meter comprising a housing having a cavity, a deformable tube disposed in the cavity, and a cam rotatably coupled to the housing, the deformable tube defining a portion of a flow path of a fluid substance, and a portion of the cam configured to press against a portion of the deformable tube so as to deform the portion of the deformable tube;
- and
- a pump positioned upstream of the flow meter and configured to drive the fluid substance along the fluid flow path through the flow meter,
- wherein the flow of the fluid substance provided by the pump drives rotation of the cam, and
- wherein a pressure in the deformable tube partially generates torque of the rotation of the cam.
A fluid delivery system to deliver a biocompatible fluid comprising:
- a pump-driven flow meter along a flow path of a fluid substance;
- a first pump configured to drive the fluid substance along the fluid flow path through the flow meter;
- and
- a second pump configured to drive the pump-driven flow meter,
- wherein the second pump comprises an electroosmotic (EO) pump, the EO pump being different from the first pump.
Dependencies are inferred from the claim text.