Two-chamber cartridge for propellant-free metering aerosols

• US 7,793,655 B2
• Filed: 07/11/2005
• Issued: 09/14/2010
• Est. Priority Date: 04/19/1996
• Status: Expired due to Fees

• Current Assignee: Boehringer Ingelheim Pharma GmbH & Company Kg (C.H. Boehringer Sohn AG & Co. KG)
• Original Assignee: Boehringer Ingelheim Pharma GmbH & Company Kg (C.H. Boehringer Sohn AG & Co. KG)
• Inventors: Hochrainer, Dieter
• Primary Examiner(s): Bianco; Patricia M
• Assistant Examiner(s): PATEL, NIHIR B
• Application Number:
  US11/178,689
• Publication Number:
  US 20050241635A1
• Time in Patent Office: 1,891 Days
• Field of Search: 128/200.14, 128/200.23, 128/203.12, 128/203.15, 128/203.19, 128/203.21, 604 86- 89, 604/415, 604/416, 604/92, 604/90, 604/91, 366/130, 206/219, 206/222, 206/221, 222/82, 222/83, 222/80, 222/129, 220/258.3, 220/258.4, 220/258.5, 220/200
• US Class Current: 128/200.14
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2027 having frangible parts
• CPC Class Codes: A61J 1/2093 Containers having several compartments for products to be mixed
• CPC Class Codes: A61K 9/0073 Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy; nasal sprays A61K9/0043; inhalation of vapours of volatile or heated drugs, e.g. essential oils or nicotine, A61K9/007; devices A61M
• CPC Class Codes: A61M 15/00 Inhalators drug delivery in endotracheal tubes A61M16/04
• CPC Class Codes: B05B 7/24 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device B05B7/14, B05B7/16, B05B11/00 take precedence

Abstract

A cartridge for propellant-free administration of a liquid pharmaceutical composition by inhalation includes: an elongate displacing device including an upper end and a lower end, the lower end for at least partial insertion into a container; a cartridge chamber disposed at the lower end of the displacing device and operable store a pharmaceutical formulation, the cartridge chamber including at least one pierceably sealed opening; and a cannula guide extending from the upper end of the displacing device to the cartridge chamber, wherein insertion of a cannula through the guide pierces the sealed opening and releases the pharmaceutical formulation into a liquid solvent in the container to form the liquid pharmaceutical composition.

Claims

1. A cartridge for propellant-free administration of a liquid pharmaceutical composition by inhalation, comprising:

an elongate displacing device including an upper end and a lower end, the lower end for at least partial insertion into a container;

a cartridge chamber disposed at the lower end of the displacing device and operable to store a pharmaceutical formulation, the cartridge chamber including at least one pierceably sealed opening;

a cannula guide extending from the upper end of the displacing device to the cartridge chamber;

a first pierceably sealed opening disposed between the cartridge chamber and the guide; and

a second pierceably sealed opening disposed between the cartridge chamber and the container, which is sealed with a sealing film including one or more frangible points between the sealing film and a periphery of the second opening such that when the first opening is pierced by pressure, the sealing film tears at the one or more frangible points,

wherein insertion of a cannula through the guide pierces the first pierceably sealed opening causing the second pierceably sealed opening to open and releases pharmaceutical formulation into a liquid solvent in the container to form the liquid pharmaceutical composition.

2. The cartridge of claim 1, wherein the displacing device is adapted to displace a portion of a solvent in the container when at least the lower end of the displacing device is inserted into the container.

3. The cartridge of claim 1, wherein first opening is sealed by a septum and the second opening is sealed with a sealing film.

4. The cartridge of claim 3, wherein the septum is made from a resilient material such that after piercing by the cannula, it is sealed off.

5. The cartridge of claim 1, wherein a lower end of the displacing device is chamfered.

6. The cartridge of claim 5, wherein the chamfering of the displacing device is between about 20°

to its vertical axis.

7. The cartridge of claim 1, wherein the active, pharmaceutical substance is in one of dry form and liquid form.

8. The cartridge of claim 7, wherein the active pharmaceutical substance is in the form of a tablet.

9. The cartridge of claim 8, wherein the tablet is between 2 and 3 mm in diameter and between 1.0 and 4.0 mm long.

10. The cartridge of claim 8, wherein the tablet has a hardness of between 2 and 10 N/mm².