Continuous/bolus infusor
First Claim
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1. An apparatus for dispensing a fluid comprising:
- mechanical means for providing a source of fluid under pressure;
regulating means in fluid communication with the pressurized source of fluid for providing a constant flow rate of the fluid;
bolus dose means having a dose reservoir in fluid communication with the pressured source of fluid, the dose reservoir having an upper volume limit which represents the discrete dose limit of the bolus dose means, and a control means for manually expressing the fluid in the dose reservoir from the dose reservoir; and
downstream tubing means in fluid communication with the regulating means and the dose reservoir such that the regulating means provides a constant maintenance flow of the fluid to the downstream tubing means while the bolus dose means provides a manually controllable bolus dose of the fluid to the downstream tubing means/
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Abstract
The present invention provides both a continuous dose and a bolus dose of fluid or beneficial agent to a patient. A source of fluid is in fluid communication with a continuous flow path for providing the patient with a continuous source of the beneficial agent. The source of beneficial agent is also connected to a bolus dose apparatus which provides patient control of a bolus dose of the beneficial agent, up to a preselected maximum.
167 Citations
15 Claims
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1. An apparatus for dispensing a fluid comprising:
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mechanical means for providing a source of fluid under pressure; regulating means in fluid communication with the pressurized source of fluid for providing a constant flow rate of the fluid; bolus dose means having a dose reservoir in fluid communication with the pressured source of fluid, the dose reservoir having an upper volume limit which represents the discrete dose limit of the bolus dose means, and a control means for manually expressing the fluid in the dose reservoir from the dose reservoir; and downstream tubing means in fluid communication with the regulating means and the dose reservoir such that the regulating means provides a constant maintenance flow of the fluid to the downstream tubing means while the bolus dose means provides a manually controllable bolus dose of the fluid to the downstream tubing means/ - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for dispensing a beneficial agent to a patient comprising:
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an elastomeric bladder capable of retaining the beneficial agent therein to create a pressurized source of the beneficial agent. flow regulating means in fluid communications with the pressurized source of the beneficial agent; a dose reservoir also in fluid communication with the pressurized source of the beneficial agent, the dose reservoir having valve means for preventing downstream flow of the beneficial agent and an upper volume limit; control means for opening the valve means and expressing the beneficial agent from the dose reservoir; and downstream tubing means in fluid communications with the flow regulating means and the dose reservoir such that the regulating means provides a constant maintenance flow of the beneficial agent to the downstream tubing means while the dose reservoir and the control means provide a bolus dose of the beneficial agent to the downstream tubing means. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus adapted to be connected to a source of pressurized beneficial fluid for delivery of the beneficial fluid to a patient comprising:
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upstream tubing adapted to establish fluid communications with the source of pressurized beneficial fluid; a flow regulator in fluid communication with the upstream tubing and a downstream tubing, the downstream tubing adapted for connection to the patient; and bolus dose means having a dose reservoir in fluid communications with the upstream tubing, the dose reservoir having an upper volume limit which represents the discrete dose limit of the bolus dose means and a control means for providing a controllable bolus dose of the beneficial agent to the downstream tubing, the bolus dose means being in parallel with the flow regulator.
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Specification