Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1990-10-09
1993-12-28
Mancene, Gene
Dentistry
Apparatus
Having intra-oral dispensing means
433 82, A61G 1702
Patent
active
052734285
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a cleaning nozzle according as well as a dental care instrument provided with such a cleaning nozzle.
Such cleaning nozzles are used individually and are removably connectable to a base instrument which is equipped with a water tank and water pump and which supplies the nozzle with water through a water feed line. Food residues in gum pockets and gaps between the teeth can be reliably flushed out by the jet of water produced by the nozzle. Even in poorly accessible places very good tooth cleaning is possible with it. The water jet which, depending on the base instrument, can be regulated in intensity, also massages the gums. As a result the perfusion of the gums is stimulated, which helps to strengthen sensitive gums and counteracts gum shrinkage.
Although these advantages have been confirmed, it has been found that dental plaque already present cannot be removed to a sufficient degree by the water jet. Therefore despite the proper use of a cleaning nozzle of the type described, the formation of tartar as a result of the adhering plaque cannot be avoided; the teeth are not completely cleaned.
Accordingly, it is the object of the present invention to devise a cleaning nozzle for dental care with improved action which, besides an advantageous effect on the gums, also makes complete cleaning of the teeth possible especially in poorly accessible places.
To solve this problem, in the cleaning nozzle according to the invention, a brushing element is arranged with respect to the path of the water jet in such a way that the water jet passes at least partially freely by the brushing element and is therefore not atomized on it, the dental plaque is detached and removed by the interaction of the water jet and the bristles of the brush element on the tooth surface. The continually acting water jet can attack and totally remove the parts of the plaque that were only loosened up by the action of the brush.
Particles freshly detached, whether by the bristles or the water jet, are immediately flushed out of the brush region and into the mouth cavity. This is important for complete tooth cleaning. Remaining components of the dental plaque could otherwise be transported further by the brush still kept in motion by the user) e.g. into the next gap or gum pocket. Plaque material pushed back and forth by the bristles is also preferentially deposited in carious depressions and thus accelerates tooth decay.
As a result of the water jet's passing at least partially by the brush element, food residues are flawlessly flushed out of the even poorly accessible places and the gum is massaged so that flawless and complete cleaning with a salutary effect on the gums is provided.
Preferred versions of the cleaning nozzle according to the invention have the features of the dependent claims. Various versions of the cleaning nozzles according to the invention are illustrated below with reference to the figures.
FIG. 1 shows a perspective view of a cleaning nozzle.
FIG. 2 is a longitudinal section through the end of the nozzle in FIG. 1 showing the nozzle outlet,
FIG. 3 is a longitudinal section through the end of another version of the cleaning nozzle showing the nozzle outlet, and
FIGS. 4 through 9 each show a longitudinal section through the end of other versions of the cleaning nozzle with replaceable brushing elements, showing the outlet end of the nozzle.
The cleaning nozzles shown in FIGS. 1 and 2 consists of a nozzle body with a head 2 and a coupling part 3.
The coupling part 3 has a connecting pin 5 with an interior water channel 4 and can be plugged into a water supply line of a basic dental care instrument, not shown, equipped with a pump. To facilitate handling, the nozzle body 1 is provided with a handle part 6.
The nozzle body 1 is designed as a cannula whose water channel 4 runs to a nozzle exit 7 arranged in a head 2 which is designed in such a way that it produces a directed water jet 8 with a longitudinal axis 9 (FIG. 2). Also in the head is a brush element 10 arranged close to the nozzle outl
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Lucchesi Nicholas D.
Mancene Gene
Trisa Buerstenfabrik AG Triengen
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