JPH0342900Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of application of the invention> This invention assists in keeping the mouth open (opening state) easily by inserting it into the vestibular part of the oral cavity, and at the same time, it helps to maintain the open state of the mouth (opening state). By pushing the lip mucosa outward from the dentition, the visual field and operative field (space for treatment operations) during dental treatment/treatment are created.
This invention relates to an opening aid and buccal/lip mucosa excluder for enlarging the area to facilitate therapeutic operations and prevent damage to the mucous membranes. Note that, hereinafter, it will be simply referred to as "excluder".

<Prior art> Conventionally, as a similar device, there is, for example, a "lip expander" shown in Publication of Utility Model Publication No. 19908-1983.
Other "mouth opening devices", ie, devices for forcibly maintaining a patient's mouth open during dental examinations and treatments, have been known.

<Problems that the invention aims to solve> However, this conventional "lip spreader" or "mouth mouth device" simply maintains the patient's open mouth forcibly, so if left as is, the treatment will not be possible. Separate measures are taken to push the buccal mucosa and labial mucosa, which are often easily damaged, outward from the dentition, such as by filling them with absorbent cotton (previously roll-formed to the required size is commercially available). The need arose. (Although the above-mentioned "lip spreader" has a certain degree of exclusion function only for the buccal mucosa, it is still insufficient in terms of exclusion in the sense mentioned above.) Performing these separately was a problem that needed to be improved in terms of psychological pressure on the patient and time and effort for the therapist. In addition, although there are differences in the degree of conventional "lip spreaders" and "mouth opening devices," they all use considerable force to maintain the open state, and when these devices are normally used, Coupled with the fact that the treatment takes a relatively long time, there are also problems such as discomfort due to pressure and, in some cases, bleeding from the mucous membrane.

Therefore, in this invention, instead of forcing the mouth to open, the mouth is assisted with elasticity, making it easier to maintain the opening state, and at the same time pushing the buccal and labial mucosa outward from the dentition. The present invention aims to provide an excluder that can expand the visual field and surgical field during dental treatment and treatment.

<Means for solving the problem> Specifically, an elastic rod-shaped object is formed into a ring shape, and the rod-shaped object is attached to the ring-shaped object that can be elastically deformed according to the shape of the oral vestibule. It is an object of the present invention to provide an excluder in which first and second elastic bodies each having a cylindrical shape that is thicker than the thickness and provided with a constricted portion are mounted in opposing positions.

<Function> In other words, by inserting this excluder into the orovaginal vestibular region, the elasticity of the ring-shaped body assists the opening state and makes it easier to maintain it, and at the same time, the buccal mucosa and labial mucosa are moved outward from the dentition. As a result, the visual field and surgical field during dental treatment and treatment are expanded, making it easier to perform treatment operations and preventing damage to the mucous membranes. At this time, the elastic deformability of the ring-shaped body greatly contributes to the ease with which the excluder is inserted into the vestibular part of the oral cavity and the ability to fit it well. It is also possible to close the . Further, the elasticity of each elastic body contributes to softening the contact during exclusion. In addition, both the upper and lower lip mucosa are pushed outward from the tooth row by both the first and second elastic bodies, and the buccal mucosa is pushed outward from the tooth row by the ring-shaped body itself. The object itself is thin, and only the first and second elastic bodies are made into cylindrical shapes that are thicker than the rod-like object, so that the entire surgical field is not narrowed and the labial mucosa, which is the most obstructive object, is removed from the teeth. It is pushed farther outward than the rows, further improving treatment operability. In addition, the constriction of the first elastic body softens the contact with the "frenulum" (a strip that spans the lip mucosa and the gum area) on the upper lip mucosa, reducing the feeling of pressure on the patient. The constriction of the second elastic body is
It has the effect of softening the contact with the "frenulum" in the lower lip mucous membrane and making it easier to rotate the second elastic body for positioning the first elastic body.

<Example> Hereinafter, an example of this invention will be described with reference to FIGS. 1 to 6.

This excluder 1 is constructed by mounting first and second elastic bodies 4 and 5 on a ring-shaped body 3 formed by forming a rod-shaped body 2 into a ring shape, with the first and second elastic bodies 4 and 5 facing each other.

The rod-shaped object 2 is formed by covering a tightly wound coil spring 10 with a silicone tube 11, and is elastically deformable due to the elasticity of the coil spring 10. Therefore, the ring-shaped body 3 formed by forming the rod-shaped body 2 into a ring shape is also elastically deformable, and due to this free elastic deformation, the oral vestibule 1
It becomes easy to insert and fit into the two parts, and it also becomes possible to close the mouth as necessary with the excluder 1 fitted during treatment. However, the means for imparting elasticity to a rod-shaped object is not limited to this coil spring 10; for example, the rod-shaped object may be formed of rubber, silicone rubber, or plastic, which itself has elasticity, and the coil spring 10 Even when using silicone tube 11,
Although it is more preferable in terms of ease of washing and hygiene, it is not necessarily essential.

Both the first and second elastic bodies 4 and 5 have a cylindrical shape that is thicker than the rod-shaped object 2, and have a constricted portion 1.
3 and 14, and is made of silicone resin foam. Although it is preferable to use silicone resin in terms of durability against high temperature sterilization treatment after use, it is of course possible to use other resins instead. Further, the first elastic body 4 is formed thicker than the second elastic body 5, and has a semicylindrical shape, whereas the second elastic body 5 has a simple cylindrical shape (FIG. 3). This is based on the fact that the width of the surgical field and the amount of displacement of the lip mucosa are inversely proportional to the thickness of the elastic body, and that treatment operability is worse for upper teeth than for lower teeth. The aim is to achieve an optimal balance between widening and narrowing and exclusion of the lip mucosa. Therefore, the size and shape of both elastic bodies 4 and 5 can be arbitrarily selected within a range that satisfies this condition.

The shape of the constricted portion 13 of the first elastic body 4 is a “frenulum”
It conforms to the outer shape of the upper lip mucosa of 15, and
In order to easily adapt to the shape of the curved tooth row, the cross-sectional shape as seen from the direction of arrow V in Fig. 1 (Fig. 5)
has a deep circular arc portion 16, and the first
The cross-sectional shape viewed from the direction of the arrow in the figure (FIG. 2) is made up of a stepped portion 17 and a circular arc portion 18. Reference numeral 19 in FIG. 5 is a connecting member interposed at both ends of the rod-like object 2 to connect the rod-like object 2 in a ring shape. It is curved to allow for shaping.

As a result of this configuration, the constriction 13, specifically the deep arc 16, corresponds to the protruding "frenulum" 15, thereby reducing pressure on the "frenulum" 15, which is the cause of discomfort. is eliminated, and the stepped portion 17
The curved surface shape of the circular arc portion 18 and the provision of the circular arc portion 18 make it easier to bend according to the shape of the tooth row, which together make it easier to adapt to the shape of the tooth row (FIG. 6).

Further, the constricted portion 14 of the second elastic body 5 is formed by rotating the second elastic body 5 as shown by arrow A in FIG.
This rotation is the torsional rotation of the ring-shaped body 3 (arrow B)
This is provided to facilitate rotation of the second elastic body 5 when the first elastic body 4 is rotated by transmitting the force through the second elastic body 4, and its cross-sectional shape is a single arc. Of course, the constriction part 14 of the second elastic body 5, like the constriction part 13 of the first elastic body 4 described above, also softens the contact with the "frenulum" which is also present in the lower lip mucosa, and also makes it suitable for the shape of the tooth row. It also has functions such as making it easier to adapt to.

Hereinafter, the usage condition of this excluder 1 will be explained.

First, the excluder 1 is suitably deformed to fit the opened mouth, and the first elastic body 4 is attached to the upper lip mucosa 1.
9, the second elastic body 5 is inserted into the oral vestibule 12 portion so as to come into pressure contact with the lower lip mucosa 20.
Then, the excluder 1 fits into the shape of the oral vestibule 12 due to its flexible elastic deformability. Then,
The second elastic body 5 is rotated as shown by arrow A in FIG. 4 and position it in its optimal state while rotating it. At this time, the constriction 14 of the second elastic body 5
As mentioned above, the contribution of

When the excluder 1 is optimally positioned in this manner, it becomes possible to maintain the open state with almost no discomfort, and at the same time, the lip mucous membranes 20, 21
is pushed outward from the dentition by both the elastic bodies 4 and 5, and the buccal mucosa 22 by the ring-shaped body 3.
The necessary field of vision and surgical field are secured, which facilitates therapeutic operations and prevents damage to the mucous membrane.

<Effects of the invention> Since the excluder according to the invention is as described above, it can be expected to have many effects, the main ones of which are as follows.

(a) By inserting this excluder into the vestibule of the oral cavity, the elasticity of the ring-shaped body assists in maintaining the open state, and at the same time, the buccal mucosa and labial mucosa are excluded outward from the dentition. As a result, the visual field and surgical field during dental examination and treatment are expanded, and as a result, treatment operations become easier to perform and damage to mucous membranes is also prevented.

(b) Since the ring-shaped body is elastically deformable due to its elasticity, it is easy to insert and fit into the vestibule of the oral cavity.

(c) Due to the elasticity of each elastic body and the constriction of each elastic body, the contact area during mucosal exclusion is soft both overall and especially on the frenulum, so that discomfort does not occur even during long-term treatment. .

(d) Assuming that the ring-shaped body is thin, the first and second
By making only both elastic bodies thick cylindrical,
The entire surgical field is not narrowed, and the labial mucosa, which is the most obstructive area, is pushed farther outward than the dentition, further improving the operability of the treatment.

(e) By providing a constricted part in the second elastic body,
Rotation of the second elastic body for positioning the first elastic body becomes easy, and an optimal fit state can be easily obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the excluder, FIG. 2 is a side view of the first elastic body viewed from the direction of the arrow in FIG. 1, and FIG. 4 is a side view of the second elastic body viewed from the arrow direction in FIG. 1, FIG. 5 is a sectional view taken along the arrow line in FIG. 2, and FIG. 6 is a schematic perspective view showing how the excluder is used. 1... Exclude device, 2... Rod-shaped object, 3... Ring-shaped body, 4... First elastic body, 5... Second elastic body, 1
3,14...constriction.

Claims (1)

[Scope of utility model registration request] The ring-shaped body is formed by forming an elastic rod-shaped body into a ring shape and is elastically deformable according to the shape of the oral vestibule, and the ring-shaped body is formed into a cylindrical shape that is thicker than the thickness of the rod-shaped body and is provided with a constricted part. A mouth opening assisting device and buccal/lip mucosa excluder comprising both a first and a second elastic body mounted in opposing positions.