Surgery – Liquid medicament atomizer or sprayer – Gas stream aspirating medicament from reservoir
Patent
1994-08-12
1997-02-04
Millin, V.
Surgery
Liquid medicament atomizer or sprayer
Gas stream aspirating medicament from reservoir
12820014, 12820312, 12820326, 12820413, 12820414, A61M 1502, A61M 1100
Patent
active
055988350
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an inhaler device with a vessel containing the substance to be inhaled and with a lid that helps to vaporize and distribute the substance to be inhaled.
Such inhaler devices are in general filled with a very hot liquid in which the desired substance to be inhaled is dissolved. A vapour containing the substance to be inhaled reaches the air passages through special nozzles for mouth or nose breathing. These known devices call for special care on account of the hot liquid.
It is also known to rub the substance to be inhaled into the skin, e.g. the chest area, and to allow it to vaporize due to the body heat. This intrinsically advantageous method occasionally irritates the skin and is therefore not tolerated in many cases.
The object of the invention is to supply the substance to be inhaled to the air passages directly or via the respiratory air in acceptable form without the use of hot liquids and without rubbing into the Skin. This object is achieved according to the invention by means of an inhaler device with a vessel containing the substance to be inhaled and with a lid that helps to vaporize the substance to be inhaled, which is provided with a substantially central opening and several openings arranged substantially in a ring around the central opening.
Developments of the invention are defined in the sub-claims.
In a preferred embodiment of the invention the lid with the two opening systems is adapted to the opening region of commercially available vessels filled with the desired substances to be inhaled (for example available under the trade name WICK VAPORUB) and is screwed down or placed on these then opened vessels. During the operation of such an inhaler device consisting of vessel and lid the substance to be inhaled can be vaporized by the flowing respiratory air or an arbitrary, adjustable air flow and be passed into the air passages. In such an application the central opening is connected to the patient via a breathing tube with mouth piece or nose piece. During sucking in of the respiratory air the external air is then drawn in via the openings arranged in a ring around the central opening in the lid, spreads over the surface of the substance to be inhaled in the vessel and reaches the patient as respiratory air together with the vaporized parts of the substance to be inhaled. Conversely substance to be inhaled vaporized during the expiration is distributed via the ring-shaped openings in the air region around the patient and breathed in immediately or subsequently. In the case of a combination of the inhaler device according to the invention with a commercially available breathing valve, e.g. the breathing valve AMBU of the firm Heraeus, the central opening of the lid is connected to the inlet of the breathing valve and the exhaled air exhaled directly via the valve.
The action of such an inhaler device has proved to be beneficial if the cross-section of the central opening is substantially equal to the sum of the cross-sections of the openings arranged in a ring.
The device can also be employed for enriching the ambient air, by using instead of the respiratory air a fan, such as for example a hair dryer or a fan specially adapted to this application. Preferably such a fan is operated at low temperatures of 50.degree., because according to further findings temperatures of around or slightly more than the body temperature are beneficial and sufficient for the vaporizing of the substance to be inhaled. Such a device is also advantageous in terms of the energy requirement.
In another embodiment the beneficial vaporizing temperature lying above the body temperature is produced or maintained over a longer time, [so] that the required amount of substance to be inhaled [is] passed into a twin-walled vessel. There can also be introduced into the vessel, separately from the substance to be inhaled, a material which alters its state slightly above the body temperature, for example changes from the liquid into the solid state, and in so doing emits the amount of heat required
REFERENCES:
patent: 2445653 (1948-07-01), White
patent: 2586502 (1952-02-01), Backus
patent: 2705007 (1955-03-01), Gerber
patent: 4635630 (1987-01-01), Noir et al.
Millin V.
Srivastava V.
LandOfFree
Inhaler device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inhaler device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inhaler device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-671660