Sub-gingival medicament applicator

BACKGROUND OF THE INVENTION

FIELD OF THE 'INVENTION .

This invention relates to medicament applicators and, more particularly, to an aerosol type applicator especially adapted to apply gingival medicament to a patient.

DESCRIPTION OF THE PRIOR ART

Gingival medicaments are normally applied topically, usually with a brush or swab. Spray devices have not been found satisfactory because of lack of control for effective application in precise areas in the mouth of the user/patient, while also often subjecting a patient to staining of their clothes.

The present invention overcomes the disadvantages of the prior devices by providing for a conveniend hand-held aerosol applicator having an end piece extending at an angle to the rest of the applicator to provide for easier access to the location being treated with no visual obstruction.

SUMMARY OF THE INVENTION

This invention relates to a hand-held sub-gingival medicament applicator, which includes an aerosol container

-22014468 fluid form and a tainer is a wand with a filling of a gingival medicament in propellant of nitrogen. Attached to the conrest of the applicator. The wand has a passageway therethrough.

A valve controlling fluid flow from the container into the passageway is provided. The container is hand held and is provided with an actuator for operating the valve

The passageway extending through the end piece may be tapered and a baffle may be provided to cooperate with the shape of the end piece and the end piece, pulsation of dispensing or exiting fluid, or both.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is an medicament applicator according to the present invention ;

Fig. 2 is a longitudinal sectional view through a portion of the wand;

Fig.

is a sectional detail view taken along the

Fig.

is a sectional view, similar to Fig. 3, of a modified form of the invention.

-3CA 02014468 1999-11-04

DETAILED DESCRIPTION OF THE INVENTION

With continuing reference to the accompanying drawing, and initially to Fig. 1, reference numeral 10 generally designates the sub-gingival medicament applicator in accordance with the present invention.

The applicator 10 includes an aerosol container 12 charged with a filling of a fluid gingival medicament 14 and a propellant 16 of nitrogen. The container 12 is provided with a valve 18 controlled by an actuator 20 for permitting fluid flow.

The container 12 is sized to fit in an average-size palm of the hand of the user and the actuator is, preferably, located and shaped for easy manipulation by the thumb of the user.

The container 12 has a discharge 22 opening into the passageway 24 of a wand 26 which is attached to the container 12. The wand may be made of synthetic plastic material or of a suitable sterilizable metal and either the wand or the container 12 may be disposable and replaceable.

Alternatively, the wand 26 may be permanently affixed to the container 12.

The wand 26 and the container 12 may be separated for refill of the container 12 and for washing or

CA 02014468 1999-11-04

<td> sterilization of the</td><td> wand 2 6.</td>

<td> Reffing now</td><td> to the construction of the wand 26, as</td>

<td> particularly shown in</td><td> Figs. 2 and 3, the wand 26 has an end</td>

4a

20144G8 piece 30, which extends angularly with respect to the remaining shaft portion 32 of the wand 26. It has been found that the end portion makes, perferably, an obtuse angle with the shaft of from 135° to 160° and, most preferably, of 150° to the shaft 32. The passageway portion 28 within the end piece is, preferably, tapered to its exit port 36. The tapering configuration of the passageway portion 28 may be such as to cause pulsations of the dispensing or exiting fluid and/or vibration of the end piece 30.

Alternatively, as shown in Pig. 4, a baffle 38, of selected shape, may be used to causé pulsations of the dispensing or existing fluid medicament and/or vibration of the end piece 30 to enhance application of the gingival medicament.

It is to be noted that the shaft portion of the wand may be far more rigid than the end piece to facilitate application to the area desired to be medicated’.