Surgery: kinesitherapy – Kinesitherapy – Device with applicator having specific movement
Patent
1996-10-16
1998-09-01
Wilson, John J.
Surgery: kinesitherapy
Kinesitherapy
Device with applicator having specific movement
433 80, A61C 1500
Patent
active
058003673
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an oral irrigator with a stirrup-shaped nozzle holder.
An oral irrigator of this kind is known, for example, from DE-A-40 29 369, which irrigator has an approximately U-shaped nozzle head which forms a tunnel and which has forty spray nozzles arranged in four planes around the circumference of the U-arch. The end regions of the U-shaped nozzle head are drawn in the direction of the teeth so that these end surfaces are guided on the surfaces of the teeth. The nozzle head has a length of approximately 2 cm so that, as it is moved along the teeth, about two to three teeth are covered at the same time. The spray nozzles are arranged in such a way that the spray jets in the central region are directed perpendicular to the tooth surfaces, and the spray jets in the end regions are directed at an angle of 45.degree., and from the bottom upwards at an acute angle. This last spray direction is provided so that the spray jets strike the tooth surfaces away from the gum, in order to prevent food debris or the like from being washed into the gingival pockets.
Although the spray jets are formed separately from one another, it is not possible to prevent a large surge of water from occurring on the tooth surface. In addition, the nozzle head has to be manufactured with extremely high precision so as to be able to create the specified effect. With the large number of spray nozzles, the irrigating fluid has to be passed through these at high pressure in order to achieve adequate cleaning. A further disadvantage of this known design of the oral irrigator is that it is not really possible to prevent a fairly large quantity of irrigating fluid from accumulating in the mouth, with the result that this irrigating fluid has to be expectorated and the cleaning thus interrupted over and over again. The width of the nozzle head, enclosing about two to three teeth, also represents an impediment to the rotational mobility on the dental arch, with the result that completely satisfactory handling is not always ensured.
The object of the present invention is to improve an oral irrigator of the abovementioned type in such a way that an enhanced irrigating action on the teeth is achieved in conjunction with a simpler design of the oral irrigator of the abovementioned type.
The invention has the essential advantage that an enhanced cleaning and irrigating action can take place, and a nozzle holder shape better adapted anatomically to the teeth can be obtained, in conjunction with substantially fewer nozzle jets. A further advantage is that the quantity of irrigating fluid which accumulates is smaller, and the handling of the oral irrigator is in this way easier.
Further advantages are evident from the dependent claims and from the following description in which the invention is explained in greater detail on the basis of an exemplary embodiment represented in the diagrammatic drawings, in which:
FIG. 1 shows a cross-section through a nozzle holder of an oral irrigator,
FIG. 2 shows a cross-section through the same nozzle holder along the line A--A in FIG. 1,
FIG. 3 shows a very diagrammatic sketch for the purpose of illustrating the use of the oral irrigator,
FIG. 4 shows an alternative embodiment of the oral irrigator represented in FIG. 1, in horizontal projection, and
FIG. 5 shows a cross-section through a branch of the oral irrigator in FIG. 4, along a section plane which is at right angles to the plane of projection and which is indicated by the line designated B--B in FIG. 4.
In the figures, the same references are used in each case for the same elements, and initial explanations apply equally to the other figures, unless otherwise stated.
FIGS. 1 and 2 show an oral irrigator 1 with a stirrup-shaped nozzle holder 2, which has two hook-shaped branches 3 of the same design. The nozzle holder 2 is connected to a tubular element 5 in a manner such that it can rotate about an axis of rotation 4. As can be seen, the tubular element 5 is designed with a channel 7 which tapers towards an annular end region or ring 6 a
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patent: 4106501 (1978-08-01), Ozbey et al.
patent: 4611992 (1986-09-01), Lokken
patent: 4991570 (1991-02-01), Bullard
patent: 5360025 (1994-11-01), Klinkhammer
patent: 5443386 (1995-08-01), Viskup
Fischer Franz
Saxer Ulrich P.
Trisa Burstenfabrik AG Triengen
Wilson John J.
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