Dual Drug Delivery Device
First Claim
1. A liquid delivery apparatus comprising a liquid delivery pathway, the liquid delivery pathway comprising:
- a liquid reservoir comprising a deformable balloon and a pressure source selected from the group consisting of a compressive sleeve spring and an electrolytic fluid cell;
a liquid metering unit fluidly connected to the liquid reservoir; and
,a catheter delivery tube fluidly connected to the liquid metering unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A liquid delivery apparatus for the intrathecal delivery of one or more medications to a patient is disclosed. The liquid delivery apparatus generally includes a liquid reservoir, a liquid metering unit fluidly connected to the liquid reservoir, and a catheter delivery tube fluidly connected to the liquid metering unit. Preferably, the liquid delivery apparatus includes two or more liquid reservoirs. In various embodiments, the liquid reservoir includes a deformable balloon and a compressive sleeve spring as a pressure source, the liquid metering unit is a piezoelectrically actuated microvalve, and/or diagnostic sensors are included in the apparatus. The disclosed apparatus are compact, volume-efficient, energy-efficient, capable of delivering accurate fluid volumes, and address problems associated with multi-medication therapies. Methods of operating the liquid delivery apparatus are also disclosed.
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Citations
35 Claims
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1. A liquid delivery apparatus comprising a liquid delivery pathway, the liquid delivery pathway comprising:
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a liquid reservoir comprising a deformable balloon and a pressure source selected from the group consisting of a compressive sleeve spring and an electrolytic fluid cell; a liquid metering unit fluidly connected to the liquid reservoir; and
,a catheter delivery tube fluidly connected to the liquid metering unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14)
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9. (canceled)
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15. A liquid delivery apparatus comprising a plurality of liquid delivery pathways, each liquid delivery pathway comprising:
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a liquid reservoir; a piezoelectrically actuated microvalve fluidly connected to the liquid reservoir; and
,a catheter delivery tube fluidly connected to the piezoelectrically actuated microvalve.
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16-22. -22. (canceled)
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23. A liquid delivery apparatus comprising a liquid delivery pathway and a sensor selected from the group consisting of a flow meter fluidly connected to the liquid delivery pathway, an accelerometer, and combinations thereof;
wherein the liquid delivery pathway comprises; a liquid reservoir; a liquid metering unit fluidly connected to the liquid reservoir; and
,a catheter delivery tube fluidly connected to the liquid metering unit. - View Dependent Claims (27)
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24-26. -26. (canceled)
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28-30. -30. (canceled)
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31. A liquid delivery apparatus comprising:
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a liquid reservoir comprising a deformable balloon having an interior volume and at least one deformable interior wall in the interior volume, the at least one deformable interior wall defining a plurality of reservoir chambers in the interior volume; a plurality of liquid metering units, each of which is fluidly connected to one of the reservoir chambers; and
,a plurality of catheter delivery tubes, each of which is fluidly connected to one of the liquid metering units. - View Dependent Claims (33)
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35-39. -39. (canceled)
Specification