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| In-line pump construction |
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| Diaphragm pump |
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Intravenous medication
| Details |
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Inventors: Theeuwes, Felix;
Assignee: ALZA Corporation (Palo Alto, CA)
Primary Examiner: Rosenbaum; C. Fred
Assistant Examiner: Finkel; Sharon
Attorney, Agent or Firm: Sabatine; Paul L., Mandell; Edward L., Stone; Steven F.
A parenteral delivery system and a formulation chamber are disclosed for administering a beneficial agent. The parenteral delivery system comprises a drip chamber and a formulation chamber. The formulation chamber comprises a wall surrounding an internal space and it has an inlet for admitting a liquid into the formulation chamber and an outlet for letting an agent formulation leave the formulation chamber. The chamber houses an agent delivery system for releasing a beneficial agent into a liquid that enters the chamber. |
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DETAILED DESCRIPTION I claim: 1.
A formulation chamber for use in a parenteral delivery system, comprising: (a) a wall surrounding a lumen; (b) an inlet for admitting a fluid into the chamber; (c) an outlet for letting fluid leave the chamber; and, (d) a plurality of tiny pills in the chamber, the tiny pills comprising: (1) particles of parenterally administrable different drugs; and, (2) a wall surrounding the parenterally administrable drugs, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drugs from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
2.
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises a film that aids in controlling the rate of release of drug formulation from the formulation chamber.
3.
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises porous film that aids in controlling the rate of release of drug formulation from the formulation chamber.
4.
A formulation chamber for use in a parenteral delivery system, comprising: (a) a wall surrounding a lumen; (b) an inlet for admitting a fluid into the chamber; (c) an outlet for letting fluid leave the chamber; and, (d) a plurality of tiny pills in the chamber, the tiny pills comprising: (1) a parenterally administrable drug dispersed in a porous matrix; and, (2) a wall surrounding the parenterally administrable drug, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drug from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
5.
The formulation chamber for use in a parenteral delivery system according to claim 4, wherein the chamber comprises a film that aids in controlling the rate of release of drug formulation from the formulation chamber.
6.
The formulation chamber for use in a parenteral delivery system according to claim 4, wherein the chamber comprises a porous film that aids in controlling the rate of release of drug formulation from the formulation chamber
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