Mixing system for an active agent delivery device

• US 6,572,582 B1
• Filed: 11/23/1999
• Issued: 06/03/2003
• Est. Priority Date: 10/18/1996
• Status: Expired due to Fees

• Current Assignee: Encinal Pharmaceutical Investments, LLC
• Original Assignee: ALZA Corporation (Johnson & Johnson)
• Inventors: Hwang, Stephen S., Ferrari, Vincent J., Wong, Patrick S. L.
• Primary Examiner(s): Hayes, Michael J.
• Assistant Examiner(s): THOMPSON, KATHRYN L
• Application Number:
  US09/447,655
• Time in Patent Office: 1,288 Days
• Field of Search: 604/48, 604/57, 604/59, 604/60, 604/77-79, 604/82-85, 604/89, 424/473, 424/451, 424/438, 424/464
• US Class Current: 604/85
• CPC Class Codes: A61J 1/2093 Containers having several compartments for products to be mixed
• CPC Class Codes: A61J 7/0038 Straws

Abstract

The present invention is directed to a mixing system for an active agent delivery device. The device comprises an elongate tubular member having first and second ends and a mixing system. The mixing system enables the entire dose of active agent to be entrained in a liquid. In use, liquid is drawn into the first end of the device, the mixing system mixes the liquid and active agent within the device and the active agent entrained in the liquid is drawn out of the second end of the member and into the patient'"'"'s mouth.

Claims

1. An active agent delivery device, comprising:

a tubular member that defines a lumen, said tubular member having a first end suitable for placement in a liquid and a second end suitable for placement in the mouth of the patient;

an active agent in the form of discrete units disposed in said lumen;

a mixing chamber spaced apart from the first end of said tubular member;

a fluid passing active agent retainer, wherein said fluid passing active agent retainer prevents release of the active agent from the first end of said tubular member while permitting the liquid to enter said tubular member, said fluid passing active agent retainer being transportable toward said mixing chamber upon application of suction by the patient so that liquid and active agent are drawn into said mixing chamber; and

means for providing turbulence, wherein said means for providing turbulence increases turbulence of the liquid drawn into said mixing chamber, wherein said means for providing turbulence is configured to prevent said fluid passing active agent retainer from being drawn into said mixing chamber.

2. The delivery device of claim 1, wherein said discrete units are selected from the group consisting of particulates, oral dosage forms and combinations thereof.

3. The delivery device of claim 1, wherein said discrete units provide for prolonged delivery of said active agent.

4. The delivery device of claim 1, wherein said discrete units provide for immediate delivery of said active agent.

5. The delivery device of claim 1, wherein said discrete units provide for delayed pulsed delivery of said active agent.

6. The delivery device of claim 1, wherein a therapeutically effective amount of active agent is disposed in said lumen.

7. The delivery device of claim 6, wherein the therapeutically effective amount is between 100 and 5000 mg.

8. The delivery device of claim 1, wherein said active agent is selected from the group consisting of antibiotics, antiviral agents, anepileptics, analgesics, anti-inflammatory agents, and bronchodilators.