DEVICE FOR DELIVERY OF POWDER LIKE MEDICATION IN A HUMID ENVIRONMENT

• US 20110106064A1
• Filed: 06/17/2009
• Published: 05/05/2011
• Est. Priority Date: 06/19/2008
• Status: Active Grant

• Current Assignee: Progenity, Inc. (Athyrium Capital Management LP)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Dijksman, Johan F., Albu, Lucian R., Zou, Hans, Shimizu, Jeff
• Granted Patent: US 9,067,011 B2
• Time in Patent Office: Days
• US Class Current: 604/891.1
• CPC Class Codes: A61M 2202/064 Powder
• CPC Class Codes: A61M 2205/3365 Rotational speed
• CPC Class Codes: A61M 2210/1053 Stomach
• CPC Class Codes: A61M 2210/1064 Large intestine
• CPC Class Codes: A61M 31/002 Devices for releasing a drug at a continuous and controlled rate for a prolonged period of time artificial gland structures or devices A61F2/022; intra-uterine contraceptive devices A61F6/14; tampons for introducing into the vagina A61F13/20, A61L15/00; suppositories or bougies for intra-vaginal or intra-uterine application A61K9/02; physical forms of medicinal preparations for sustained or differential drug release A61K9/20, A61K9/50
• CPC Class Codes: A61M 5/14276 specially adapted for implantation

Abstract

A device for placement in an environment, particularly a humid environment, for delivery of medication to said environment. The device comprises a reservoir (103) having an orifice (104), a conveying unit for conveying a reservoir'"'"'s content (106) through the orifice (104) and an actuator arrangement for driving the conveying unit. In order to provide a reliable delivery of medication in a humid environment, the conveying unit comprises an auger (110) extending in the reservoir (103).

Claims

1. A device for placement in an environment for delivery of medication to said environment, comprising a reservoir having an orifice, a conveying unit for conveying a reservoir'"'"'s content through the orifice and an actuator arrangement for driving the conveying unit, wherein the conveying unit comprises an auger extending in the reservoir.

2. The device according to claim 1, wherein the conveying unit comprises a piston for pressurizing the reservoir'"'"'s content.

3. The device according to claim 2, wherein the conveying unit is provided with a facility for pretensioning the piston to the reservoir'"'"'s content.

4. The device according to claim 2, wherein the piston is driveable by the auger.

5. The device according to claim 2, wherein a surface profile of the piston matches a surface profile of a reservoir'"'"'s surface adjacent of the orifice.

6. The device according to claim 1, wherein the conveying unit comprises a collapsible barrier for pressurizing the reservoir'"'"'s content.

7. The device according to claim 1, wherein the auger has an axially varying helical flighting height.

8. The device according to claim 7, wherein the axially varying helical flighting height increases with an axial distance from the orifice.

9. The device according to claim 1, wherein the auger has an axially varying helical flighting pitch.

10. The device according to claim 8, wherein the axially varying helical flighting pitch monotonically increases with the axial distance from the orifice.

11. The device according to claim 1, comprising a measuring apparatus for measuring a quantity of the reservoir'"'"'s content conveyed through the orifice.

12. The device according to claim 11, wherein the measuring apparatus comprises a revolution counter for counting a number of revolutions made by the auger.

13. A capsule provided with the device according to claim 1.

14. The device according to claim 3, wherein the piston is driveable by the auger.

15. The device according to claim 3, wherein a surface profile of the piston matches a surface profile of a reservoir'"'"'s surface adjacent of the orifice.

16. The device according to claim 4, wherein a surface profile of the piston matches a surface profile of a reservoir'"'"'s surface adjacent of the orifice.