JPH0722253Y2 - Dental suction tip - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tip attached to the tip of a suction pipe for sucking moisture in the oral cavity during dental treatment.

[0002]

2. Description of the Related Art Improving the therapeutic effect on a patient by inhaling from the oral cavity the cutting dust generated during the dental treatment, especially the cutting dust and water discharged in the form of a spray from a cutting instrument (air turbine). Suction pipes are used to prevent the scattering of cutting dust into the room and to manage the health of dentists, hygienists, and the like.

The suction pipe allows the dentist to grasp it and position and orient the suction pipe in the oral cavity.
Made of metal tube or hard resin tube. A cylindrical suction tip made of a light material is fitted to the tip of the suction pipe so that the suction pipe does not feel pain even when it hits the mouth of the patient.

The suction pipe is made of a very soft material such as silicone rubber, and the opening edge of the tip is formed obliquely for the purpose of facilitating suction, and the rear portion is elastically expanded and attached to the suction pipe. It is used.

[0005]

However, depending on the treatment site, the back surface of the suction tip may be used to push the tongue or the like to expand the treatment site space. In that case, the suction tip is made of a soft material as described above. In addition, due to the fact that the tip of the suction tip has a tapered plate-like shape and has no strength, the tip easily bends inward to open the suction port. Block it up,
There was a problem that it interfered with suction.

Further, the suction pipe having rigidity itself has an angled shape, and it can be used by rotating it by a desired angle in a direction corresponding to a treatment site. At that time, the suction tip also needs to be in a position rotated with respect to the suction pipe by an amount corresponding to the rotation angle. However, the suction tip is made of a soft material, and is elastically expanded to be tightly fitted to the suction pipe. Since the suction tip has a large fitting force, it cannot be easily rotated and is extremely inconvenient to use.

Further, the suction tip is removed from the suction pipe during disinfection, but even at that time, the fitting force is great and it is difficult to remove and the workability is poor.

The present invention solves the problems associated with the above-mentioned conventional suction tip, and secures the softness that does not cause pain to the patient at the tip portion, and at the time of use, the suction port is deformed by the deformation of the tip portion. It is an object of the present invention to provide a suction tip for dental treatment which does not block the suction hole and is relatively easy to rotate with respect to the suction port.

[0009]

According to the present invention, the above object is to provide a tubular base member and the base member in a suction chip attached to the tip of a suction pipe for sucking moisture in the oral cavity during dental treatment. A flexible portion provided on the front part of the base portion, and the base material portion has an inner peripheral surface of an annular groove that snap-fits to an annular projection on the outer peripheral surface of the counterpart suction pipe or an annular groove on the inner peripheral surface. A mounting portion having a surface or an annular projection formed on the outer peripheral surface, and a thin, tubular core portion extending forward from the mounting portion, and the flexible portion covers at least the front end portion of the core portion. Further, it is achieved by extending to the front of the core portion and forming a sloped surface with respect to the axis at the front end opening edge of the flexible portion.

[0010]

When the suction pipe as the counterpart is inserted into the mounting portion of the base portion of the suction tip according to the present invention having the above-mentioned structure and is pushed in, the annular projection on the outer circumference of the tip of the suction pipe or the annular groove on the inner peripheral surface is The annular groove on the inner surface of the mounting portion or the annular projection on the outer surface is snap-fitted to prevent slipping out. The suction pipe and the suction tip maintain their circumferential positions due to the frictional force of each other, but if the suction tip is rotated by a force that opposes this, the rotational position can be easily changed.

Since the tip of the suction tip attached to the suction pipe is a flexible portion made of a soft material, it is elastically deformed without causing pain to the patient. Since the flexible portion has the core, even if the tip of the flexible portion is elastically deformed, a large deformation that blocks the suction port is prevented.

When removing the suction tip from the suction pipe, it suffices to relatively pull the suction tip in the axial direction against the fitting between the annular projection and the annular groove.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 is a suction pipe and 2
0 is a suction tip. The suction pipe 10 is made of, for example, a metal pipe or a plastic material having relatively high rigidity, and is connected to the suction device via a flexible pipe or the like (not shown). The suction pipe 10 has a stepped tip portion and has a thin portion 11 for a predetermined length. An annular protrusion 12 having a substantially semicircular cross section is formed on the outer surface of the tip end opening of the thin portion 11.

On the other hand, the suction tip 20 comprises a base portion 21 and a flexible portion 22. The base material portion 21 is made of a material such as a relatively hard plastic having a certain elasticity, but a cylindrical mounting portion 23 and a thin core portion extending from the mounting portion 23 in the axial direction forward. 24 and. The inner diameter D ₂ of the mounting portion 23 and the outer diameter D ₁ of the thin portion 11 of the suction pipe 10 are set to such a size that they are fitted to each other so as to have a frictional force suitable for maintaining their rotational positions. Has been done. An annular groove 25 having a size and shape with which the annular projection 12 of the suction pipe 10 is snap-fitted is formed in a middle portion of the inner surface of the mounting portion 23. The thin-walled core portion 24 is formed so that the tip edge forms a two-step slope with respect to the axis.

Next, the flexible portion 22 is made of a soft material such as silicone rubber and covers the core portion 24 and also the core portion 2.
4 extends forward by a predetermined dimension A so that the tip portion can be easily elastically deformed. Although the flexible portion 22 may be detachably attached to the base material portion 21, it is preferably formed integrally with the base material portion 21 for easy handling. The dimension A is set smaller than the inner diameter of the suction tip.

The suction tip 20 of this embodiment is used in the following manner.

The suction tip 20 is fitted onto the thin portion 11 of the suction pipe 10, and the annular projection 12 of the thin portion snaps into the annular groove 25 formed on the inner surface of the mounting portion 23 of the suction tip 20. They fit together and prevent each other from coming off in the axial direction.

The mounting portion 23 and the thin portion 11 maintain their positions with an appropriate frictional force without relative rotation around the axis. Further, the relative rotational position can be changed by applying a torque that resists the frictional force.

At the time of treatment, when the water or the like in the oral cavity is sucked by the suction tip 20, the treatment site is expanded by using the back surface of the distal end portion of the flexible portion 22. Since the portion 24 is provided, the suction opening is not blocked by the elastically deformed portion.

When removing the suction tip 20 from the suction pipe, the suction tip 20 may be relatively pulled out in the axial direction by a force against the fitting force of the annular projection 12 in the annular groove 25.

In this embodiment, the suction tip is provided with the annular groove and the suction pipe is provided with the annular projection which fits into the annular groove. An annular projection may be formed on the outer peripheral surface of and the annular groove may be formed on the inner peripheral surface of the suction pipe.

[0023]

As described above, according to the present invention, since the flexible portion is provided in front of the core portion, even if the flexible portion is elastically deformed during the treatment, it is prevented from being deformed by a predetermined amount or more. Therefore, the suction port is not blocked and the treatment is not hindered, and the suction tip can be easily moved to a desired rotation position with respect to the suction pipe, and the position can be maintained, which improves workability. obtain. Furthermore, the attachment / detachment to / from the suction pipe becomes easy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along a plane including an axis of a suction tip according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Suction pipe 12 Annular protrusion 20 Suction tip 21 Base material 22 Flexible part 23 Attachment part 24 Core part 25 Annular groove

Claims (2)

[Scope of utility model registration request] 1. A suction tip attached to the tip of a suction pipe for sucking moisture in the oral cavity during dental treatment,
A tubular base material portion and a flexible portion of a soft material provided in the front portion of the base material portion are provided, and the base material portion is an annular projection on the outer peripheral surface of the counterpart suction pipe or an annular groove on the inner peripheral surface. The flexible portion includes a mounting portion having an annular groove on the inner peripheral surface or an annular protruding portion formed on the outer peripheral surface for snap fitting, and a thin, tubular core portion extending forward from the mounting portion. A suction tip for dental treatment, which covers at least the front end portion of the core portion and extends forward of the core portion, and the front end opening edge of the flexible portion forms a slope with respect to the axis. 2. The suction tip for dental treatment according to claim 1, wherein the flexible portion is formed integrally with the base material portion.