Single dose delivery device
First Claim
1. A system for delivering single dose units of medical reagents in fluid form, comprising:
- a diluent chamber having a connector, the diluent chamber comprising a fixed volume of diluent;
a diluent delivery mechanism within the connector downstream of the diluent chamber;
a reagent chamber including a dry reagent bed, wherein the reagent chamber is integrally connected with the connector and the diluent delivery mechanism;
a compression component in the reagent chamber positioned for exerting pressure upon the reagent bed; and
a reagent delivery mechanism integrally connected with and downstream of the reagent chamber for delivering the reagent in a liquid.
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Accused Products
Abstract
A microinjection system comprises a device for housing dried forms of medical reagents, such as vaccines, hormones, etc. in single doses. Within a single chamber, a dry reagent bed is provided adjacent a compression component that keeps the bed compacted. In operation, diluent flows through the chamber to carry the reagent out of the chamber in fluid form. In the illustrated embodiments, the fluid carrying reagent is directly delivered from the chamber via a needle. Integral or connectable diluent delivery devices are disclosed for providing an appropriate volume of diluent to the reagent chamber. Unstable formulations of drugs, for example, can be safely stored in dry form. When injection is needed, the drug can be delivered almost instantly in fluid form simply by releasing diluent through the chamber, where the reagent bed is dissolved or suspended while the remaining reagent is continually compacted. The resultant fluid contains a single dose of the reagent and is delivered directly to a patient, desirably without measurement of the fluid form.
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Citations
19 Claims
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1. A system for delivering single dose units of medical reagents in fluid form, comprising:
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a diluent chamber having a connector, the diluent chamber comprising a fixed volume of diluent;
a diluent delivery mechanism within the connector downstream of the diluent chamber;
a reagent chamber including a dry reagent bed, wherein the reagent chamber is integrally connected with the connector and the diluent delivery mechanism;
a compression component in the reagent chamber positioned for exerting pressure upon the reagent bed; and
a reagent delivery mechanism integrally connected with and downstream of the reagent chamber for delivering the reagent in a liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A reagent delivery system, comprising:
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a diluent delivery device comprising a diluent chamber having a maximum volume of about 10 mL;
a reagent delivery device, comprising a reagent chamber, a reagent bed, a compression component in the reagent chamber positioned for exerting pressure on the reagent bed;
a diluent delivery mechanism upstream of the reagent delivery device, the diluent delivery mechanism having a proximate end and a distal end; and
a reagent delivery mechanism integrally connected and downstream of the reagent chamber for delivering the reagent in a liquid outside the system. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of delivering a defined drug dose in fluid form, comprising:
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integrally connecting a diluent chamber with a reagent delivery device comprising a reagent chamber and a reagent delivery mechanism downstream of the reagent chamber, wherein the diluent chamber has a maximum volume of about 10 mL;
converting a dry reagent within the reagent chamber into a fluid form by flowing a diluent along a path from the diluent chamber to the reagent chamber;
compressing the dry reagent with a compacting mechanism while flowing the diluent through the dry reagent; and
delivering the fluid form from the reagent chamber through the reagent delivery mechanism to a drug recipient in fluid communication with the reagent delivery mechanism. - View Dependent Claims (16, 17, 18, 19)
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Specification