Surgery – Liquid medicament atomizer or sprayer – Pre-pressurized container holding medicament
Patent
1994-05-16
1995-10-24
Burr, Edgar S.
Surgery
Liquid medicament atomizer or sprayer
Pre-pressurized container holding medicament
12820312, 12820014, A61M 1100
Patent
active
054601711
DESCRIPTION:
BRIEF SUMMARY
The invention is used in portable regulating aerosol appliances for pharmaceutical applications.
The appliances are intended for vaporizing and spraying of an active element in the respiratory system of the user.
Generally, the appliances consist of a body equipped with a mouth or nose piece, a regulating bottle containing the product to be sprayed, an injection duct connected to the regulating bottle and opening up into the mouth or nose piece.
To use the appliances, the user must simultaneously press the regulating bottle, while he inhales in the mouth or nose piece, in order to drive the sprayed dose of the product into the respiratory tracts.
Unfortunately, the efficiency of the device greatly depends on the ability of user to correctly synchronize both manoeuvers.
Extensive research has resulted in automatic and semi-automatic appliances whereby the active element is injected by the patient when he inhales in the appliance. Such appliances are frequently based on complex and rather expensive methods which are sometimes quite unreliable.
The device in this invention cures these disadvantages and offers a simple, economical and reliable solution to the synchronization problem.
In the device in this invention, the user is prevented from or very restricted in inhaling, until the manoeuver for releasing the dose of active element has been executed. Therefore, the user has more time available to activate the regulating bottle, as soon as he has started his attempt to inhale through the appliance, without reducing the synchronization action.
Therefore, the device, which is built with the same general design of conventional appliances, that is: regulating bottle, mouth piece, has, in addition thereto, a closing device, acting as a valve, which opens with the motion that activates the release of a dose of the product from the regulating piece.
This valve, which remains closed when the appliance is in neutral position, prevents or restricts the user from inhaling in the appliance until he has activated the regulating piece, which shall then trigger the opening of the valve, followed by an injection of one dose of active element, in synchronization with inhalation by user.
This implies that previously thereto, the user must have exhaled as deeply as possible prior to putting the appliance in his mouth, after which he should have tried to inhale into the appliance prior to the activating of the regulating bottle.
In addition, the device can be equipped with a damper valve which shall allow user to exhale through the appliance.
We can see that this device is less elaborate than automatic appliances, but that it offers some help for synchronizing, by using simple, reliable and inexpensive methods.
Other advantages and features shall appear more clearly from the following statement of the specific execution modes of the invention, given as non-limitative examples and shown on the drawings, where:
FIG. 1 shows the front view of device in neutral position, in its preferential form, in AA section.
FIG. 2 shows underneath view, without regulating bottle.
FIG. 3 shows front view of the first variation, still in neutral position, in AA section.
FIG. 4 shows underneath view, without regulating bottle.
FIG. 5 shows front view of the second variation, in AA section.
FIG. 6 shows underneath view, without regulating bottle.
FIG. 7 shows front view of third variation in neutral position, in AA section.
FIG. 8 shows right side view.
FIG. 9 shows front view of fourth variation in neutral position, in AA section.
FIG. 10 shows underneath view, without regulating bottle, in BB section.
In a preferential execution mode shown on FIGS. 1 and 2, the device conventionally consists of a body (1), equipped with a mouth piece (2), a regulating bottle (3), equipped with a rod for the release (4), which opens up into the injection duct (5) of the body, and the product is being released when user presses regulating bottle (3) onto the body (1), which manoeuver shall slide bottle into body.
The appliance that acts as a valve consists of the sh
REFERENCES:
patent: 4852561 (1989-08-01), Sperry
patent: 5031610 (1991-07-01), Armstrong et al.
Pesenti Yvan
Quenderff Jean-Philippe
Burr Edgar S.
Deane, Jr. William J.
Taylor Reese
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