Aerosol generation device and inhalation device therewith

• US 7,472,701 B2
• Filed: 03/30/2005
• Issued: 01/06/2009
• Est. Priority Date: 04/07/2004
• Status: Expired due to Fees

• Current Assignee: PARI Pharma GmbH (PARI MEDICAL HOLDING GmbH)
• Original Assignee: PARI Pharma GmbH (PARI MEDICAL HOLDING GmbH)
• Inventors: Pumm, Gerhard, Pfichner, Andreas
• Primary Examiner(s): Bianco; Patricia M
• Assistant Examiner(s): PATEL, NIHIR B
• Application Number:
  US11/094,561
• Publication Number:
  US 20050224076A1
• Time in Patent Office: 1,378 Days
• Field of Search: 128/200.14, 128/203.19, 128/205.24, 128/200.13, 128/200.11, 128/200.21, 128/200.22, 128/201.28
• US Class Current: 128/203.12
• CPC Class Codes: A61M 15/0085 using ultrasonics spraying or atomising liquids using ultrasonic vibrations in general B05B17/06
• CPC Class Codes: A61M 2202/04 Liquids
• CPC Class Codes: B05B 17/0646 Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto

Abstract

An aerosol generation device comprising an oscillatable membrane (1) for the nebulization of a liquid, having a first curved region (11), and an oscillation generating device (2, 3) by which the membrane can be caused to oscillate such that a liquid disposed on one side of the membrane is nebulized through the oscillating membrane and is present on the other side of the membrane as an aerosol. The membrane has at least a second region (12) which is surrounded by the first region (11). The first region (11) and the second region (12) have different curvatures (1/r1, 1/r2).

Claims

1. An aerosol generation device comprising

an oscillatable membrane for nebulization of a liquid having a first curved nonplanar region and

an oscillation generating device having a support unit and an electromechanical conversion unit, being fixedly connected to the membrane such that the membrane is excitable into a desired oscillating condition such that a liquid disposed on one side of the membrane is nebulized by passing through holes in the oscillating membrane and is present on the other side of the membrane as an aerosol,

wherein

the membrane has at least a second region which is surrounded by the first region,

the first region and the second region have different curvatures, and

the first region and the second region are both convex outwardly in a single direction when the membrane is at rest.

2. The aerosol generation device according to claim 1, wherein holes are only present in the membrane in the first region and in the second region.

5. The aerosol generation device according to claim 1, wherein holes are only present in the second region.

8. The aerosol generation device according to claim 1, wherein no holes are present in the membrane in the vicinity of transition edges between the regions.

9. The aerosol generation device according to claim 1, wherein the first region is surrounded by a third region the curvature of which is Zero.

10. The aerosol generation device according to claim 1, wherein the first region extends to the edge of an opening of the oscillation generating device.

11. The aerosol generation device according to claim 1, wherein the oscillation generating device comprises a support unit and an electromechanical conversion unit, which are connected to each other.

12. The aerosol generation device according to claim 1, wherein the oscillation generating device excites the membrane to bending oscillations.

13. The aerosol generation device according to claim 1, wherein the membrane and the oscillation generating device are rotational-symmetrically designed.

14. An inhalation therapy device comprising

a liquid storing means for storing a liquid to be nebulized, and

an aerosol generation device according to claim 1, wherein

the supply of the liquid is performed from the liquid storing means to the membrane at environmental pressure.

15. The aerosol generation device according to claim 11, wherein the electromechanical conversion unit comprises a piezo-electric conversion unit.

3. An aerosol generation device comprising

an oscillatable membrane for nebulization of a liquid having a first curved nonplanar region and

an oscillation generating device having a support unit and an electromechanical conversion unit, being fixedly connected to the membrane such that the membrane is excitable into a desired oscillating condition such that a liquid disposed on one side of the membrane is nebulized by passing through holes in the oscillating membrane and is present on the other side of the membrane as an aerosol,

wherein

the membrane has at least a second region which is surrounded by the first region and

the first region and the second region have different curvatures, wherein the holes in the zones distant from the oscillation node lines of the first region have a greater density.

4. An aerosol generation device comprising

an oscillatable membrane for nebulization of a liquid having a first curved nonplanar region and

an oscillation generating device having a support unit and an electromechanical conversion unit, being fixedly connected to the membrane such that the membrane is excitable into a desired oscillating condition such that a liquid disposed on one side of the membrane is nebulized by passing through holes in the oscillating membrane and is present on the other side of the membrane as an aerosol,

wherein

the membrane has at least a second region which is surrounded by the first region and

the first region and the second region have different curvatures, wherein the holes have a greater density at a center line of the first region.

6. An aerosol generation device comprising

an oscillatable membrane for nebulization of a liquid having a first curved nonplanar region and

an oscillation generating device having a support unit and an electromechanical conversion unit, being fixedly connected to the membrane such that the membrane is excitable into a desired oscillating condition such that a liquid disposed on one side of the membrane is nebulized by passing through holes in the oscillating membrane and is present on the other side of the membrane as an aerosol,

wherein

the membrane has at least a second region which is surrounded by the first region and

the first region and the second region have different curvatures, wherein the holes in the zones distant from the oscillation node lines of the second region have a greater density.

7. An aerosol generation device comprising

an oscillatable membrane for nebulization of a liquid having a first curved nonplanar region and

an oscillation generating device having a support unit and an electromechanical conversion unit, being fixedly connected to the membrane such that the membrane is excitable into a desired oscillating condition such that a liquid disposed on one side of the membrane is nebulized by passing through holes in the oscillating membrane and is present on the other side of the membrane as an aerosol,

wherein

the membrane has at least a second region which is surrounded by the first region and

the first region and the second region have different curvatures, wherein the holes have a greater density in the middle of the second region.