Aerosol enhancement device

• US 6,363,932 B1
• Filed: 07/06/2000
• Issued: 04/02/2002
• Est. Priority Date: 07/06/2000
• Status: Expired due to Fees

• Current Assignee: Clinical Technology Incorporated
• Original Assignee: Clinical Technology Incorporated
• Inventors: Johnson, Robert, Forchione, Dennis
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): MITCHELL, TEENA KAY
• Application Number:
  US09/610,801
• Time in Patent Office: 635 Days
• Field of Search: 128/200.14, 128/200.18, 128/200.21, 128/203.12, 128/203.15, 128/200.24, 239/203.21, 239/335, 239/338, 239/354
• US Class Current: 128/203.12
• CPC Class Codes: A61M 15/0016 located downstream of the dispenser, i.e. traversed by the product
• CPC Class Codes: A61M 15/0086 Inhalation chambers
• CPC Class Codes: A61M 15/009 using medicine packages with incorporated spraying means, e.g. aerosol cans pocket atomiser of the injector type A61M11/08
• CPC Class Codes: A61M 16/0093 by adsorption, absorption or filtration
• CPC Class Codes: A61M 16/0808 Condensation traps
• CPC Class Codes: A61M 16/1055 bacterial
• CPC Class Codes: A61M 16/1065 in the expiratory path
• CPC Class Codes: A61M 2206/16 Rotating swirling helical flow, e.g. by tangential inflows

Abstract

An aerosol medication delivery apparatus includes a fixed volume holding chamber which is constructed to allow for a uniformly mixed, concentrated bolus of medicated aerosol to be delivered with each breath. The device further includes a universal inlet, so that any standard small volume nebulizer, as well as any standard metered dose inhaler (MDI), may be utilized therewith. Also filtration can be added to address contaminated patient air and aerosol. A one-way valve is positioned between the holding chamber and a tee piece for attaching the holding chamber to a patient mouthpiece, to help control the loss of aerosol, and thereby reduce waste. The device is simply constructed of two molded plastic members, which are readily engaged to complete its assembly.

Claims

1. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending a substantial distance through said interior volume and defining a holding chamber interiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber;

an air inlet port disposed in said tower member for receiving air into said air passage; and

a T-piece for connecting said mouthpiece to said tower member;

wherein the air in said air passage flows therethrough around said inner wall and into said holding chamber, to be entrained with said medicated aerosol.

2. The aerosol enhancement device as recited in claim 1, and further comprising a one-way valve in said T-piece.

3. The aerosol enhancement device as recited in claim 1, and further comprising an outlet port in said T-piece which is open to atmosphere, said outlet port having an exhalation filter disposed therein.

4. The aerosol enhancement device as recited in claim 1, wherein said inner wall comprises a tubular member.

5. The aerosol enhancement device as recited in claim 1, and further comprising a one-way valve disposed in said air inlet port.

6. The aerosol enhancement device as recited in claim 5, wherein said one-way valve comprises an O-ring valve.

7. The aerosol enhancement device as recited in claim 1, and further comprising an adapter disposed in said medicated aerosol inlet port, said adapter comprising a universal fitting which is capable of attaching said tower member to either a nebulizer or a metered dose inhaler (MDI).

8. The aerosol enhancement device as recited in claim 7, wherein said adapter is reversible, being disposable in a first orientation for attachment of said tower member to a nebulizer, and being disposable in a second orientation for attachment of said tower member to an MDI.

9. The aerosol enhancement device as recited in claim 8, wherein said adapter comprises a first rigid connector end and a second flexible connector end, said first rigid connector end being adapted for attachment to a nebulizer and said second flexible connector end being adapted for attachment to an MDI.

10. The aerosol enhancement device as recited in claim 9, said adapter further comprising a flange portion for engaging said adapter with said tower member.

11. The aerosol enhancement device as recited in claim 9, and further comprising a drainage channel disposed in said second flexible connector end, for draining liquid from said tower member to a nebulizer connected to said first rigid connector end.

12. The aerosol enhancement device as recited in claim 1, wherein said air inlet port is disposed on a disk which is attached to said inner wall.

13. The aerosol enhancement device as recited in claim 12, wherein said disk, said inner wall, and said T-piece are all molded as an integral unit.

14. The aerosol enhancement device as recited in claim 12, wherein said disk and said T-piece comprise an integral end cap which is attachable to said tower member.

15. The aerosol enhancement device as recited in claim 1, wherein said outer body has a total length, and said inner wall extends more than half of said total length through said interior volume.

16. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body which defines an interior volume;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said interior volume; and

an adapter disposed in said medicated aerosol inlet port, said adapter comprising a universal fitting which is capable of attaching said tower member to either a nebulizer or a metered dose inhaler (MDI).

17. The aerosol enhancement device as recited in claim 16, and further comprising a drainage channel disposed in said universal fitting, for draining liquid from said tower member to a nebulizer attached thereto by means of said fitting.

18. The aerosol enhancement device as recited in claim 16, wherein said adapter is reversible, being disposable in a first orientation for attachment of said tower member to a nebulizer, and being disposable in a second orientation for attachment of said tower member to an MDI.

19. The aerosol enhancement device as recited in claim 18, wherein said adapter comprises a first rigid connector end and a second flexible connector end, said first rigid connector end being adapted for attachment to a nebulizer and said second flexible connector end being adapted for attachment to an MDI.

20. The aerosol enhancement device as recited in claim 20, said adapter further comprising a flange portion for engaging said adapter with said tower member.

21. A tower member usable with a mouthpiece, for dispensing medicated aerosol to a patient, said tower member comprising:

an outer body which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending a substantial distance through said interior volume and defining a holding chamber interiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber;

an air inlet port disposed in an upper portion of said tower member and adjacent to an upper portion of said inner wall for receiving air into said air passage; and

an outlet port for dispensing medicated aerosol entrained in air from said holding chamber to said mouthpiece;

wherein the air in said air passage flows therethrough around said inner wall and into said holding chamber, to be entrained with said medicated aerosol.

22. The tower member as recited in claim 21, wherein there is no pressurized air inlet for supplying pressurized air to said holding chamber.

31. The tower member as recited in claim 21, wherein said first member further includes an inner wall which extends downwardly into said outer body when said first and second members are engaged, thereby defining a holding chamber therewithin, and an air passage between said outer wall and said inner wall.

32. The tower member as recited in claim 31, wherein said inner wall comprises a tubular wall, so that the defined air passage is annular.

23. A tower member usable with a mouthpiece, for dispensing medicated aerosol to a patient, said tower member comprising:

an outer body which defines an interior volume;

an inlet port disposed in said tower member outer body for receiving a medicated aerosol from an exterior source into said interior volume; and

an adapter disposed in said medicated aerosol inlet port, said adapter comprising a universal fitting which is capable of attaching said tower member to either a nebulizer or a metered dose inhaler (MDI).

24. The tower member as recited in claim 23, wherein said adapter is reversible, being disposable in a first orientation for attachment of said tower member to a nebulizer, and being disposable in a second orientation for attachment of said tower member to an MDI.

25. The tower member as recited in claim 24, wherein said adapter comprises a first rigid connector end and a second flexible connector end, said first rigid connector end being adapted for attachment to a nebulizer and said second flexible connector end being adapted for attachment to an MDI.

26. The tower member as recited in claim 25, said adapter further comprising a flange portion for engaging said adapter with said tower member.

27. A tower member usable with a mouthpiece, for dispensing medicated aerosol to a patient, said tower member comprising:

a first member comprising a fitting for attachment of said tower member to said mouthpiece and a disk having an air inlet port disposed therein; and

a second member comprising an outer body which defines an interior volume and an inlet port disposed in said tower member outer body for receiving a medicated aerosol from an exterior source into said interior volume;

wherein said first and second members are engageable to form said tower member.

28. The tower member as recited in claim 27, wherein said first member is constructed of molded plastic.

29. The tower member as recited in claim 27, wherein said second member is constructed of molded plastic.

30. The tower member as recited in claim 27, said first member comprising an end cap insertable into said second member.

33. A tower member usable with a mouthpiece, for dispensing medicated aerosol to a patient, said tower member comprising:

an outer body which defines an interior volume;

an inlet port disposed in said tower member outer body for receiving a medicated aerosol from an exterior source into said interior volume;

an adapter disposed in said medicated aerosol inlet port, said adapter comprising a fitting which is capable of attaching said tower member to said exterior source; and

a drainage channel disposed near a joint between said fitting and said outer body for draining liquid from said interior volume into said exterior source.

34. The tower member as recited in claim 33, and further comprising a plurality of said drainage channels, spaced about a periphery of said joint between said fitting and said outer body.

35. The tower member as recited in claim 33, wherein said exterior source comprises a nebulizer.

36. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending a substantial distance through said interior volume and defining a holding chamber interiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber;

an air inlet port disposed in said tower member for receiving air into said air passage; and

a one-way valve disposed in said air inlet port;

wherein the air in said air passage flows therethrough around said inner wall and into said holding chamber, to be entrained with said medicated aerosol.

37. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending a substantial distance through said interior volume and defining a holding chamber interiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber,

an air inlet port disposed in said tower member for receiving air into said air passage; and

an adapter disposed in said medicated aerosol inlet port, said adapter comprising a universal fitting which is capable of attaching said tower member to either a nebulizer or a metered dose inhaler (MDI);

wherein the air in said air passage flows therethrough around said inner wall and into said holding chamber, to be entrained with said medicated aerosol.

38. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body having a total length and which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending more than half of said total length through said interior volume and defining a holding chamber inferiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber;

an air inlet port disposed in said tower member for receiving air into said air passage;

wherein the air in said air passage flows therethrough around said inner wall and into said holding chamber, to be entrained with said medicated aerosol.

39. An aerosol enhancement device, comprising:

a mouthpiece;

a tower member fluidly attached to said mouthpiece, said tower member having an outer body which defines an interior volume;

an inner wall disposed in said outer body, said inner wall extending a substantial distance through said interior volume and defining a holding chamber interiorly of said inner wall, said inner wall and said outer body defining an air passage therebetween;

an inlet port disposed in said tower member for receiving a medicated aerosol from an exterior source into said holding chamber;

an air inlet port disposed in said tower member for receiving air into said air passage;

wherein the air in said air passage flows therethrough around said inner wall, into said holding chamber, to be entrained with said medicated aerosol, and then through an outlet from an upper end of said holding chamber;

said air inlet port and said holding chamber outlet having a barrier disposed therebetween, so that there is no fluid flow communication therebetween.