FR2565816A1 - Special nozzle which can be fitted to a hydropulser for injecting a liquid under the gingiva - Google Patents

Abstract

The invention relates to a special nozzle which can be fitted to a hydropulser which can be inserted under the gingiva and which allows the user to inject a liquid without risk of injury under the gingiva. It is constituted by a hollow tube 1, of which the round-shaped end 2 is inserted under the gingiva; a hollow guide rod 3 allowing adequate orientation of the instrument by a first elbow 7 and a second elbow 8; a hollow sleeve 4 allowing the instrument to be held; a valve 5 used to reduce the flow rate of the stream coming from the hydropulser, and a flexible connection 6 allowing the return of the excess liquid to the hydropulser tank. The special nozzle which can be fitted to a hydropulser according to the invention is in particular intended for irrigating pharmaceutical products under the gingiva.

Description

 The present invention relates to a special tip adaptable on a hydropulsor allowing irrigation under the gum.

 Traditionally the tips of hydropulsor only allow an irrigation of the inter-dental spaces, and a superficial massage of the gum.

 The special adaptable tip extends the use of the hydropulsor, in that it allows to carry a liquid under the gum to the bottom of the periodontal pockets, ensuring prophylaxis and a new method of treatment of periodontal diseases.

 The special adaptable tip according to the invention consists at its end of a hollow probe (1) whose external diameter at most 0.5 mm, allows subgingival insertion, the end of the probe having a rounded shape (2) intended to facilitate the user access under the gum, without risk of injury.

 The hollow guide rod (3) has a double angulation which allows the user to easily reach the buccal surfaces of the teeth, as well as the jugal surfaces, up to the molars.

 The handle (4) also hollow, is long enough, about 10 cm, to allow gripping, and provided with a valve (5) intended to weaken the flow rate of the jet under the gum, in order to avoid excessive traumatic pressure to this level, thus avoiding any modification of the power settings of any hydropulsor.

 The special adaptable tip can be made of plastic in a single injection molding operation provided that the material used is sufficiently resistant mechanically to avoid a fracture at the end inserting under the gum, and sufficiently resistant thermally and chemically to allow sterilization.

 The special adaptable tip has a rounded section. According to a preferred embodiment for the use of the dental surgeon, the hollow probe (1) inserted under the gum can be made of metal and graduated to allow a measurement of the depth of the periodontal pockets under irrigation.

 According to a variant, the end of the hollow probe (1). can be spherical to facilitate insertion by the user by offering more security on the one hand, and on the other hand to avoid oversizing errors when measuring the depth of the periodontal pockets.

 Figure 1 shows in section the tip according to the invention.

 Figure 2 shows in section a variant of the nozzle according to the invention.

 The special adaptable tip shown in Figure 1 therefore includes a hollow probe (1) whose length is of the order of 1.5 cm.

The rounded end (2) has an outside diameter of the order of 0.4 mm. The insertion of the hollow probe (1) is facilitated by a first bend (7) of approximately 900, with the guide rod (3) and by a second bend (8) of approximately 1500 between the guide rod ( 3) and the handle (4), the length of which is approximately 10 centimeters, and the diameter of approximately 0.7 cm. The valve (5) allows a low pressure to be maintained under the gum. A flexible connector (6) long enough to allow the return of excess liquid to the reservoir of the hydropulsor.

 In the embodiment according to FIG. 2, the hollow probe (1) has graduations allowing the measurement of the depth of the periodontal pockets and an end of spherical shape (10) whose external diameter is at most 0.5 mm. FIG. 3 represents a detailed view of the hollow probe (1) and of the rounded end (2) of FIG. 1.

Claims (5)

 1) Special tip adaptable on hydropulser characterized in that it comprises a hollow probe (1) having an end of rounded shape (2) allowing insertion and irrigation under the gum.  2) special adaptable tip according to claim 1 characterized in that the double angle (7) - (8) of the hollow guide rod (3) allows adequate orientation of the instrument relative to the handle (4).  3) Special adaptable tip according to any one of the preceding claims, characterized in that a valve (s) serves to weaken the flow rate of the jet, and that a flexible connector (6) allows the return of the excess liquid to the hydropulsor tank.  4) Special adaptable tip according to any one of the preceding claims, characterized in that the hollow probe (1) can be graduated (9) and provided with a spherical end (10).  5) Special adaptable tip according to any one of the preceding claims, characterized in that it is made of rigid sterilizable plastic or metal.