JP4819955B2 - Lip opening device - Google Patents

Description

  The present invention relates to a lip opening device for opening a lip.

  In oral care and dental treatment for care recipients, infants, and disabled people, it is necessary to open the lips to ensure a visual field in the oral cavity. However, in oral care and dental treatment, it is very difficult to open the lips and secure a visual field in the oral cavity for a subject who cannot open the lips by himself or a subject who refuses to open the lips.

  As a related technology, a pair of mouth ridges that are inserted into the oral cavity and widen the mouth corners, and a pair of wings that are formed outwardly projecting outward from the pair of mouth corner folds and push the inner part of the mouth, and a pair of There has been known an oral cavity spreading device including a substantially U-shaped spring arm portion for connecting a mouth fold (see, for example, Patent Document 1).

  In this mouth opening device, after reducing the width dimension of the wing part, the wing part is inserted into the oral cavity from the mouth angle of the patient, and both sides of the mouth angle are fitted into the recessed grooves in the outer peripheral parts of the left and right mouth ridges. Thereafter, when the finger is released, the spring arm portion returns to the expanding direction, so that the left and right mouth corner folds move in a direction away from each other. Thereby, a patient's mouth angle is pushed right and left, and is pushed and spread in the oral cavity by a wing part.

JP 2002-17670 A (refer to paragraphs [0021] to [0023] of the publication)

  However, in the mouth opening device of Patent Document 1, the outer peripheral portions of the left and right mouth ridges are sandwiched between fingers, the left and right mouth ridges are pushed inward against the spring force of the spring arm, and the width dimension of the wing portion is increased. There is work to reduce. A problem that requires complicated work such as inserting the wing part into the oral cavity from the patient's mouth corner in this work state and fitting both sides of the mouth corner into the recessed grooves on the outer peripheral part of the left and right mouth corner folds There is.

  In addition, there is a concern that the mouth opening device of Patent Document 1 may make it difficult to perform the above-described operation on a subject who is not cooperative with oral care such as a care recipient, an infant, or a disabled person.

Therefore, even if the subject of the present invention is intended for non-cooperating persons for oral care such as care recipients, infants, and handicapped persons, the lip opening work can be efficiently and easily performed and is suitable for general use. To provide a lip opening device.

According to one embodiment of the present invention, in the lip opening device that opens the lips, the first handle portion formed in a rod shape or a strip shape and the first handle portion that is connected to one end of the first handle portion. A grip portion, a first collar portion connected to the other end of the first handle portion, a second handle portion formed in a rod shape or a strip shape, and one end of the second handle portion A second gripping part that is continuously provided, a second collar part that is continuously provided on the other end of the second handle part, and a first opening direction and the first opening direction of the first collar part. Is the second opening direction in the opposite direction, the first handle and the second handle so that the second collar can be moved in the first opening direction and the second opening direction. A fulcrum portion that is openably and closably connected, and the first flange portion is closed by moving the first flange portion and the second flange portion in the first closing direction and the second closing direction. From the other end of the first handle Along an axis that includes the serial fulcrum extending said first handle portion first base extending provided continuously to the other end of the base of the first to the first opening direction A first wall portion extending from the first base portion in the first opening direction so as to face the first wall portion, and the first wall portion , The second collar part is a state in which the first collar part and the second collar part are moved and closed in the first closing direction and the second closing direction, and A second base extending from the other end along the axis and extending to the other end of the second handle; and extending from the second base in the second opening direction. The second wall portion extending from the second base portion in the second opening direction so as to face the second wall portion, and the axis line. In the extending direction of the first wall portion And the front end portion of the first mating wall portion bulge out toward the front end side, and the rear end portion of the first wall portion and the rear end portion of the first mating wall portion are rear In the direction in which the axis extends, the distal end portion of the second wall portion and the distal end portion of the second mating wall portion bulge in a curved shape toward the distal end side, The rear end portion of the second wall portion and the rear end portion of the second mating wall portion bulge in a curved shape toward the rear end side, and the first flange portion and the second flange portion are the first end portion . Open and close according to the opening and closing of the grip part and the second grip part, and the first wall part and the second collar part are closed, and the first wall part is placed inside the upper lip of the subject And the first wall portion is positioned outside the upper lip of the subject, and the second wall portion is inserted inside the lower lip of the subject and the second wall portion is inserted into the subject's upper lip. After positioning outside the lower lip, front The lip opening device is characterized in that the lip of the subject is opened by rotating the lip opening device and opening the first and second buttocks .

  According to the lip opening device according to one aspect of the present invention, the opening operation of the lips can be easily performed, and the opening can be easily held as it is. The maneuver is easier.

  Further, according to the lip opening device according to one aspect of the present invention, a simple mouth care procedure is possible not only at an actual medical site but also at a nursing care site or at home, and a lip opening device suitable for general use is provided. can do.

It is a front view of the lip opening instrument which concerns on one embodiment of this invention. It is a perspective view of the lip opening instrument shown in FIG. It is the reverse view which looked at the lip opening instrument shown in FIG. 1 from the lower side. It is the top view which showed the initial state in the usage method of the lip opening instrument which concerns on one embodiment of this invention with the lip. It is the top view which showed operation of the next step in the usage method of the lip opening instrument shown in FIG. 4 with the lips. It is the top view which showed operation of the next step in the usage method of the lip opening instrument shown in FIG. 5 with the lips. It is the top view which showed the state which opened the lip by operation of the next step in the usage method of the lip opening instrument shown in FIG. It is the left view which expanded and showed the modification of the 1st and 2nd buttocks part of the lip opening instrument shown in FIG. 1 in the state seen from the left side of FIG. It is a perspective view which shows the modification which provided the lock mechanism in the lip opening instrument shown in FIG. FIG. 10 is a partial cross-sectional view showing the lock mechanism shown in FIG. 9 in cross section and enlarged. It is the front view which showed the modification of the lip opening instrument shown in FIG. It is the front view which showed the other modification of the lip opening instrument shown in FIG. It is the front view which showed the state which moved the 1st and 2nd buttocks of the lip opening instrument shown in FIG. 12 to the opening direction. It is the left view which expanded and showed the further modification of the lip opening instrument shown in FIG. 1, and was seen from the left side of FIG.

  With reference to FIG. 1 thru | or FIG. 3, the whole structure of the lip opening apparatus which concerns on one embodiment of this invention is demonstrated.

  The illustrated lip opening device is connected to the first handle 11, the first grip 12 connected to one end of the first handle 11, and the other end of the first handle 11. The first handle 13, the second handle 21, the second grip 22 connected to one end of the second handle 21, and the other end of the second handle 22. It has the 2nd collar part 23 currently provided in a row.

  Further, the lip opening device includes a first opening part A1 (see FIG. 1), a second opening direction A2 (see FIG. 1), a first opening part 13 and a second opening part 23, The first handle portion 11 and the second handle portion 21 are connected to each other so that they can be opened and closed in the closing direction B1 (see FIG. 1) and the second closing direction B2 (see FIG. 1). A fulcrum part 31 is provided.

  Here, the first opening direction A1 is a direction in which the first collar 13 connected to the first handle 11 rotates and moves in one of the opening directions with the fulcrum 31 as a fulcrum. . The second opening direction A2 is a direction in which the second flange 23 connected to the second handle 21 rotates and moves in the direction opposite to the first opening direction A1 with the fulcrum 31 as a fulcrum. .

  The first closing direction B1 is a direction in which the first collar 13 connected to the first handle 11 rotates and moves in the direction opposite to the first opening direction A1 with the fulcrum 31 as a fulcrum. is there. The second closing direction B2 is a direction in which the second collar 23 connected to the second handle 21 rotates and moves in the direction opposite to the second closing direction A2 with the fulcrum 31 as a fulcrum. is there.

  The first handle portion 11 and the second handle portion 21 are made in the shape of a rod or a strip, and are positioned symmetrically on both sides of the axis X (see FIG. 1) including the fulcrum portion 31. The first grip portion 12 and the second grip portion 22 are symmetrically positioned on both sides of an axis line X (see FIG. 1) including the fulcrum portion 31. The first flange portion 13 and the second flange portion 23 are positioned symmetrically on both sides of the axis X including the fulcrum portion 31. In this embodiment, the first flange 13 and the second flange 23 have the same shape.

  The first collar portion 13 includes a first base portion 14 connected to the other end of the first handle portion 11 and a plate shape extending from the first base portion 14 in the first opening direction A1. The first wall portion 15 and the first mating wall portion 16 extending from the first base portion 14 in the first opening direction A1 so as to face the first wall portion 15.

  As shown in FIGS. 1 and 3, the first base portion 14 is in a state where the first flange portion 13 and the second flange portion 23 are moved and closed in the first and second closing directions B <b> 1 and B <b> 2. Thus, the first handle portion 11 is connected to the first handle portion 11 so as to extend along the substantially axis X from the other end of the first handle portion 11. In addition, the first base portion 14 is curved in a dome shape so that the central portion in the direction of the axis X is gently recessed in the first opening direction A1.

  The edge 15a on the first opening direction A1 side of the first wall 15 is curved in a dome shape so that the central portion in the axis X direction bulges gently in the first opening direction A1. The edge 16a on the first opening direction A1 side of the first mating wall portion 16 is curved in a dome shape so that the central portion in the axis X direction bulges gently in the first opening direction A1.

  Moreover, the front-end | tip part 15c (refer FIG. 3) of the 1st wall part 15 of the 1st collar part 13 and the front-end | tip part 16c of the 1st other party wall part 16 are bulging to the front end side in the curve shape. The rear end portion 15d of the first wall portion 15 and the rear end portion 16d of the first mating wall portion 16 are curved so as to bulge toward the rear end side. Further, the first wall 15 and the first mating wall 16 have the same height from the first base 14 to the edges 15a and 16a extending in the first opening direction A1.

  The second flange 23 has a second base 24 connected to the other end of the second handle 21 and a plate shape extending from the second base 24 in the second opening direction A2. The second wall portion 25 and the second mating wall portion 26 extending from the second base portion 24 in the second opening direction A2 so as to face the second wall portion 25.

  As shown in FIGS. 1 and 3, the second base 24 is in a state in which the first flange 13 and the second flange 23 are moved and closed in the first and second closing directions B1 and B2. Thus, the second handle 21 is connected to the second handle 21 so as to extend along the substantially axis X from the other end of the second handle 21. Further, the second base portion 24 is curved in a dome shape so that the central portion in the axis X direction is gently recessed in the second opening direction A2.

  The edge 25a on the second opening direction A2 side of the second wall 25 is curved in a dome shape so that the central portion in the axis X direction bulges gently in the second opening direction A2. The edge 26a on the second opening direction A2 side of the second mating wall portion 26 is curved in a dome shape so that the central portion in the axis X direction bulges gently in the second opening direction A2.

  Moreover, the front-end | tip part 25c (refer FIG. 2) of the 2nd wall part 25 and the front-end | tip part 26c of the 2nd other party wall part 26 have protruded in the curved shape to the front end side. The rear end portion 25d of the second wall portion 25 of the second flange 23 and the rear end portion 26d of the second mating wall portion 26 are curved so as to bulge toward the rear end side. Further, the second wall portion 25 and the second mating wall portion 26 have the same height from the second base portion 24 to the edge portions 25a and 26a extending in the second opening direction A2.

  The first hook 13 and the second hook 23 are in close contact with each other at the position closest to the axis X in the first and second closing directions B1 and B2, and the first grip 12 and As the second grip 22 is opened and closed, the first and second opening directions A1 and A2 are opened and closed away from the axis X.

  As shown in FIGS. 1 to 3, the first gripping portion 12 and the second gripping portion 22 are ring-shaped that can be opened and closed by inserting and gripping fingers of a hand in a bag as a general-purpose product. It is a shape part. In addition, the 1st holding | grip part 12 and the 2nd holding | grip part 22 may be a shape part which can be grasped with a finger of a hand in a pliers as a general-purpose product, and can be opened and closed.

  Next, an operation method for opening the lips using the lip opening device will be described. First, as shown in FIG. 4, as shown in FIG. 4, the first lip 13 and the second lip 23 are closed and the lip opening device is positioned laterally. The first wall portion 15 of the heel portion 13 is inserted into the upper lip 35.

  At this time, the first holding part 12 and the second holding part 22 are held with a finger of one hand. The first wall portion 15 of the first flange portion 13 is slightly inclined with respect to a common virtual plane including the first and second opening directions A1 and A2 and the first and second closing directions B1 and B2. In this state, the first wall 15 is inserted into the upper lip 35. At this time, the first mating wall portion 16 faces the outer surface of the upper lip 35.

  Since the edge 15a on the first opening direction A1 side of the first wall 15 is curved in a dome shape, the upper lip 35 and the lower lip 36 are closed even when the upper lip 35 and the lower lip 36 are closed. The first wall 15 can be easily inserted between the lower lips 36.

  As a next step, as shown in FIG. 5, the first lip 13 is pushed up slightly above the upper lip 35 to slightly open the upper lip 35 upward, and the second wall 25 of the second lip 23 is lowered. Insert inside the lips 36. At this time, the second mating wall portion 26 faces the outer surface of the lower lip 36.

  Since the edge 25a on the second opening direction A2 side of the second wall 25 is curved in a dome shape, the second wall 25 can be easily inserted inside the lower lip 36. Can do.

  As the next step, as shown in FIG. 6, with the first gripping portion 12 and the second gripping portion 22 gripped by the finger of the right hand, the lip opening device is rotated at an angle of about 90 degrees (clockwise in FIG. 6). At an angle of 90 degrees). At this time, the distal end portion 15c of the first wall portion 15 and the distal end portion 25c of the second wall portion 25 are inside the upper lip 35 while the first flange portion 13 and the second flange portion 23 are closed. Is inserted in the vertical direction. At this time, the rear end portion 15d of the first wall portion 15 and the rear end portion 25d of the second wall portion 25 are in contact with the lower lip 36 so as to push the lower lip 36 downward.

  In addition, when the 1st holding part 12 and the 2nd holding part 22 are hold | gripped with the finger of the left hand, the 1st collar part 13 and the 2nd collar part 23 are reversed at an angle of about 180 degree | times in the horizontal direction. When the first gripping portion 12 and the second gripping portion 22 are gripped with fingers of the left hand and the lip opening device is rotated to an angle of about 90 degrees (an angle of 90 degrees counterclockwise) The state shown in FIG.

  Finally, when the first grip 12 and the second grip 22 are closed in the first and second closing directions B1 and B2, as shown in FIG. Since the part 23 opens greatly in the first and second opening directions A1 and A2, the lips can be greatly opened.

  In this way, the lip opening device is rotated after being inserted into the lip with the first and second buttocks 13 and 23 closed, so that the first and third buttocks 13 and 23 are rotated. The lips can be opened by a simple operation of opening, and the lips can be opened without damaging the upper lip 35, the upper lip 36, or the oral cavity.

  The first and second ridges 13 and 23 are formed in curved surfaces so that there are no acute or right-angled corners in order to avoid damaging the upper lip 35 and the upper lip 36 and the oral cavity.

  Further, any one or all of the first base portion 14 of the first collar portion 13 and the second base portion 24 of the second collar portion 23, the first handle portion 11 and the second handle portion 21, If it is made of a material having flexibility, the first flange portion 13 and the second flange portion 23 are easily bent like a bow in directions parallel to each other, and the first flange portion 13 and the second flange portion 23 are inclined. You can make it.

  That is, when the first buttocks 13 and 23 are pressed by the mouth corners of the upper lip 35 and the lower lip 36, the first and second buttocks 13 and 23 become parallel to each other. Can be tilted in the direction of a bow.

  Furthermore, it is good also as a curved shape where the front-end | tip part 15c of the 1st wall part 15 of the 1st collar part 13 was bulged a little forward rather than the front-end | tip part 16c of the 1st other party wall part 16. Similarly, it is good also as a shape which the front-end | tip part 25c of the 2nd wall part 25 of the 2nd collar part 23 bulged a little forward rather than the front-end | tip part 26c of the 2nd other party wall part 26.

  The lip opening device can be manufactured by processing a metal material, and can also be manufactured by a synthetic resin such as plastic, polycarbonate, polyethylene, and polypropylene.

  Moreover, the 1st collar part 13 and the 2nd collar part 23 are shapes with a clearance gap between the 1st wall part 15 and the 1st mating wall part 16, and the 2nd wall part 25 and the 2nd Although it is a shape with a clearance gap between the other party wall parts 26, the shape without a clearance gap may be sufficient. Further, the first flange 13 and the second flange 23 have a first wall 15 and a first mating wall 16, a second wall 25 and a second mating wall 26. The shape which has the 1st wall part 15 in the 1st collar part 13 at least and the 1st wall part 25 in the 2nd collar part 23 may be sufficient.

  FIG. 8 shows a modification of the first heel part 13 and the second lip part 23 of the lip opening device shown in FIGS. 1 to 3, and shows an enlarged view as seen from the left side of FIG. It is a figure. In the description of the lip opening device shown in FIG. 8, the same functional parts as those of the lip opening device described with reference to FIGS. 1 to 3 will be described with reference to the reference numbers of the lip opening device of FIGS.

  Referring to FIG. 8, the first mating wall portion 16 ′ of the first flange 13 has an edge portion 16 a ′ extending from the first base portion 14 in the first opening direction A <b> 1 as the first wall. It is a shape that extends lower than the edge 15 a of the portion 15. Similarly, the second mating wall portion 26 ′ of the second flange portion 23 has an edge portion 26 a ′ extending from the second base portion 24 in the second opening direction A 2 of the second wall portion 25. The shape extends lower than the edge 25a.

  Even in such a shape of the first heel part 13 and the second heel part 23, an operation of opening the lips can be performed by adopting the usage method of opening the lips using the lip opening device described above. Can be done.

  9 and 10 show a lock so that the first flange portion 13 and the second flange portion 23 maintain the posture in a substantially V-shape in the front at the position where the first and second opening portions A1 and A2 are opened. The specific example provided with the lock mechanism which performs was provided in the lip opening instrument.

  Hereinafter, the lock mechanism of the lip opening device will be described. The first handle portion 11 and the second handle portion 21 located between the fulcrum portion 31 and the first grip portion 12 and the second grip portion 22 are the first handle portion 11 and the second handle portion 21. When the part 21 is closed in the first and second closing directions B1 and B2, a lock mechanism 41 is provided which is locked at a predetermined position.

The lock mechanism 41 has a long plate-shaped lock portion 42 extending from the second handle portion 21 to the first handle portion 11 side, and a lock extending from the first handle portion 11 to the second handle portion 21 side. A long plate-shaped locked portion 43 that engages with the portion 42.

  The lock portion 42 has a plurality of engaging grooves 42a formed on one surface, and the locked portion 43 has a protruding engaging portion 43a that engages with any of the plurality of engaging grooves 42a. ing.

  It is preferable that the lock part 42 and the to-be-locked part 43 have elasticity by molding with a resin material. The lock portion 42 and the locked portion 43 are molded simultaneously with the first handle portion 11 and the second handle portion 21 using the same resin material as the first handle portion 11 and the second handle portion 21. You may do it.

  When the first handle 11 and the second handle 21 are closed in the first and second closing directions B1 and B2, the first hook 13 and the second hook 23 are opened in the opening directions A1 and A2. open. In this state, the lock mechanism 41 holds the first handle portion 11 and the second handle portion 21 so as not to rotate.

  The opening angle of the first and second opening directions A1 and A2 can be locked at a desired multiple-stage angle by a combination of the engagement grooves 42a and the engagement portions 43a of the lock mechanism 41. .

  As described above, since the engagement portion of the lock mechanism 41 can be selected and locked, the degree of opening of the lips can be selected, and the first and second collars 13 and 23 can be selected according to the degree of opening of the necessary lips. The positions of the first and second opening directions A1 and A2 can be maintained.

  FIG. 11 shows a modification of the lip opening device described with reference to FIG. In the lip opening device described in FIG. 7, the first handle portion 11 and the second handle portion 21 are opened from the fulcrum portion 31 in a substantially V-shape in the front. Therefore, the 1st collar part 13 and the 2nd collar part 23 are located in the state which inclined about the fulcrum part 31 as the fulcrum axis | shaft.

  In the lip opening device shown in FIG. 11, the first handle portion 11 ′ and the second handle portion 21 ′ are opened from the fulcrum portion 31 in a substantially U shape, so that the first handle portion 11 ′ is viewed from the front. The collar 13 and the second collar 23 are positioned substantially parallel to the axis X. Thus, the lower lip 36 (refer FIG. 7) side can be opened more widely by positioning the 1st collar part 13 and the 2nd collar part 23 substantially parallel.

  In addition, when the 1st collar part 13 and the 2nd collar part 23 closed the 1st handle part 11 'and the 2nd handle part 21' in the 1st and 2nd closing directions B1 and B2, Similar to the first flange 13 and the second flange 23 shown in FIG. 1, they can be positioned substantially parallel to each other at a position closest to the axis X. In order to position the first brim part 13 and the second brim part 23 at a position closest to the axis X, the first handle part 11 'and the second handle part 21' This is possible if the design is taken into account.

  12 and 13 show still another modification of the lip opening device shown in FIG. In the description of the lip opening device shown in FIGS. 12 and 13, the same parts as those of the lip opening device shown in FIGS.

  Referring to FIGS. 12 and 13, the first handle 111 is formed in a substantially crank shape. The second handle 121 is formed in a substantially crank shape that is the target of the first handle 111 with the axis X as the center line.

  The first grip portion 12 is connected to one end of the first handle portion 111. A second grip 22 is connected to one end of the second handle 121. A first collar 13 is connected to the other end of the first handle 111. A second collar 23 is connected to the other end of the second handle 121.

  The first handle portion 111 has a first intermediate portion 111a that is long in a direction orthogonal to the axis X. A fulcrum part 131 is provided in the first intermediate part 111a. The second handle 121 has a second intermediate portion 121a that is long in a direction orthogonal to the axis X. The second intermediate portion 121a is formed with an engagement portion 121b having a long hole shape that is slidably engaged with the fulcrum portion 131.

  The first intermediate portion 111a and the second intermediate portion 121a are slidable in the direction orthogonal to the axis X along the slide member 150 that is long in the direction orthogonal to the axis X. The slide member 150 serves as a rail that guides the first intermediate portion 111a and the second intermediate portion 121a in a direction orthogonal to the axis X.

  As shown in FIG. 12, in the state where the first and second collar parts 13 and 23 are closed, the first and second gripping parts 12 and 22 are opened and closed. It is in the open state in the directions A1 'and A2'. In this state, as shown in FIG. 13, when the first gripping portion 12 and the second gripping portion 22 are closed in the first and second closing directions B1 ′ and B2 ′, the fulcrum portion 131 is used as an axis. The first intermediate portion 111a and the second intermediate portion 121a move in parallel using the slide member 150 as a guide, and the fulcrum portion 131 slides on the engaging portion 121b.

  Thus, when the 1st holding part 12 and the 2nd holding part 22 are closed to the 1st and 2nd closing directions B1 'and B2', the 1st eaves part 13 and the 2nd eaves part 23 mutually Move in parallel and move in the first and second opening directions A1 ′, A2 ′ to open.

  At this time, the lip opening device can open the first handle portion 111 and the second handle portion 121 from the fulcrum portion 131 in a substantially U shape, so that it is viewed from the front as shown in FIG. In some cases, the first flange 13 and the second flange 23 are positioned parallel to the axis X.

  Thus, the lower lip 36 (refer FIG. 7) side can be opened widely by positioning the 1st collar part 13 and the 2nd collar part 23 in parallel.

  The operation for opening the lips using the lip opening device shown in FIGS. 12 and 13 is the same as the operation of the lip opening device described with reference to FIGS.

  FIG. 14 shows a modification of the first heel part 13 and the second heel part 23 of the lip opening device shown in FIGS. 1 to 3, and shows an enlarged view as seen from the left side of FIG. It is a figure. In the description of the lip opening device shown in FIG. 14, the same portions as those of the lip opening device shown in FIGS. The operation for opening the lips using the lip opening device is the same as the operation of the lip opening device described with reference to FIGS.

  The first collar 113 and the second collar 123 shown in FIG. 14 have a circular arc plate shape. The first collar portion 113 is connected to one end of the first handle portion 11 (see FIG. 1), extends from the other end of the first handle portion 11, The first wall portion 115 and the first mating wall portion 116 that extend in the first opening direction A1 so as to face each other from one base portion 114 are provided.

  The second collar portion 123 is connected to one end of the second handle portion 21 (see FIG. 1), extends from the other end of the second handle portion 21, and the second base portion 124. The second wall portion 125 and the second mating wall portion 126 extending in the second opening direction A2 so as to face each other from the two base portions 124 are provided.

  The first base 114, the first wall 115, and the first mating wall 116 are arcuate curved surfaces in which these outer surfaces are continuous. The second base portion 124, the second wall portion 125, and the second mating wall portion 126 are arcuate curved surfaces in which these outer surfaces are continuous. The outer surface of the first base 114, the outer surface of the first wall 115 and the outer surface of the first mating wall 116 described here are opposed to the first wall 115 and the first mating wall 116. And an outer surface with respect to the inner surface of the first base 114 that is continuous with the inner surfaces. Further, the outer surface of the second base portion 124, the outer surface of the second wall portion 125, and the outer surface of the second mating wall portion 126 are the inner surfaces where the second wall portion 125 and the second mating wall portion 126 are opposed to each other. And a surface that is on the outer side with respect to the inner surface of the second base portion 124 that is continuous with these inner surfaces.

  The first base 114 is curved in a dome shape so that the central portion in the direction of the axis X is gently recessed in the first opening direction A1, and the first wall 115 and the first mating wall 116 first The edges 115a and 116a on the opening direction A1 side may be curved in a dome shape so that the central portion in the axis X direction bulges gently in the first opening direction A1.

  Further, the first wall portion 115 of the first flange 113 and the front end portions 15c and 16c (see FIG. 2) of the first mating wall portion 116 bulge in a curved shape so as to bulge toward the front end side. In addition, the rear end portion of the first wall portion 115 and the rear end portion of the first mating wall portion 116 of the first flange portion 113 bulge toward the rear end side in a curved shape. Good.

  Similarly, the second base portion 124 is curved in a dome shape so that the central portion in the axis X direction is gently recessed in the second opening direction A2, and the second wall portion 125 and the second mating wall portion 126 are The edges 125a and 126a on the second opening direction A2 side may be curved in a dome shape so that the central portion in the axis X direction bulges gently in the second opening direction A2.

  Further, the second wall portion 125 of the second flange portion 123 and the distal end portions 25c and 26c (see FIG. 2) of the second mating wall portion 126 are formed in a curved shape so as to bulge toward the distal end side, The rear end portions 25d and 26d of the second wall portions 125 and 126 of the second flange portion 123 may be formed in a curved shape so as to bulge toward the rear end side.

  Further, the first flange portions 13 and 113 and the second flange portions 23 and 123 described in the embodiment may have a curved surface such as the surface of a rugby ball. In other words, the first and second wall portions 15 and 25 and the center surfaces of the outer surfaces of the first and second mating wall portions 16 and 26 may be slightly curved outward.

  The first mating wall portion 116 of the first flange portion 113 has an edge portion 116a extending from the first base portion 114 in the first opening direction A1, and an edge portion 115a of the first wall portion 115. It may be a shape extending lower. Similarly, the second mating wall portion 126 ′ of the second flange portion 23 has an edge portion 126 a ′ extending from the second base portion 124 in the second opening direction A 2 of the second wall portion 125. The shape may be lower than the edge 125a.

  Further, in the embodiment, the first handle portions 11 and 11 ′ are connected to the first grip portion 12, and the second handle portions 21 and 21 ′ are connected to the second grip portion 22. However, the first handle portions 11 and 11 ′ are connected to the second grip portion 22, the second handle portions 21 and 21 ′ are connected to the first grip portion 12, and the fulcrum portion 31. You may make it support so that rotation is possible.

  The lip opening device of the present invention has been described above with reference to the embodiments, but the present invention is not limited to the above-described embodiments and modifications. The configuration of the present invention can be variously modified by those skilled in the art within the scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is used as a lip opening device during oral examination, oral treatment, intraoral imaging, and as a lip opening device during brushing.

11, 11 ', 111 1st handle part 12 1st grip part 13, 113 1st collar part 14, 114 1st base part 15,115 1st wall part 15a, 115a Edge of 1st wall part Part 15c First wall part tip part 15d Rear end part of first wall part 16, 16 ', 116 First mating wall part 16a, 16a', 116a Edge part of first mating wall part 16c First 16d First wall portion 21, 21 ', 121 Second handle 22 Second grip portion 23, 123 Second collar 24, 124 Second base 25, 125 Second wall portion 25a, 125a Edge portion of second wall portion 25c Front end portion of second wall portion 25d Rear end portion of second wall portion 26, 26 ', 126 Second mating wall portion 26a, 26a ', 126a Edge portion of second mating wall portion 26c Tip portion of second mating wall portion 26d Second Rear end portion 31, 131 fulcrum portion 41 lock mechanism 42 lock portion 42a engagement groove 43 locked portion 43a engagement portion 111a first intermediate portion 121a second intermediate portion 121b engagement portion 150 slide member A1 , A1 ′ first opening direction A2, A2 ′ second opening direction B1, B1 ′ first closing direction B2, B2 ′ second closing direction X axis

Claims (10)

In the lip opening device that opens the lips,
A first handle portion formed in a rod shape or a strip shape, a first grip portion provided continuously with one end of the first handle portion, and a first provided continuously with the other end of the first handle portion. A collar portion, a second handle portion formed in the shape of a rod or a strip, a second gripping portion connected to one end of the second handle portion, and the other end of the second handle portion The second collar portion provided in series, the first collar portion in the first opening direction and the second opening direction opposite to the first opening direction, and the second collar portion in the first opening direction. A fulcrum that connects the first handle and the second handle so as to be openable and closable so as to be movable in the opening direction and the second opening direction,
The first collar portion is a state in which the first collar portion and the second collar portion are moved and closed in the first closing direction and the second closing direction, and the first handle portion. A first base portion extending continuously from the end along the axis including the fulcrum portion and extending to the other end of the first handle portion, and extending from the first base portion in the first opening direction. A first wall portion that is present, and a first mating wall portion that extends in the first opening direction from the first base portion so as to face the first wall portion. ,
The second hook part is the second handle part in a state where the first hook part and the second hook part are moved and closed in the first closing direction and the second closing direction. A second base extending continuously from the other end of the second handle along the axis to the other end of the second handle, and extending in the second opening direction from the second base. A second wall portion that extends from the second base portion in the second opening direction so as to face the second wall portion ,
In the extending direction of the axis, the front end portion of the first wall portion and the front end portion of the first mating wall portion bulge in a curved shape toward the front end side, and the rear end portion of the first wall portion And the rear end portion of the first mating wall portion bulge in a curved shape toward the rear end side,
In the extending direction of the axis, the front end portion of the second wall portion and the front end portion of the second mating wall portion bulge in a curved shape toward the front end side, and the rear end portion of the second wall portion And the rear end portion of the second mating wall portion bulge in a curved shape toward the rear end side,
The first and second collars open and close in response to the opening and closing of the first gripping part and the second gripping part ;
With the first buttocks and the second buttocks closed, the first wall is inserted inside the subject's upper lip and the first mating wall is placed outside the subject's upper lip. And, after the second wall portion is inserted inside the lower lip of the subject and the second counterpart wall portion is located outside the lower lip of the subject, the lip opening device is rotated, A lip opening device that opens the lip of the subject by opening the first and second buttocks .   2. The lip opening device according to claim 1, wherein the first buttocks and the second buttocks are located symmetrically on both sides of the axis including the fulcrum portion. The lip opening device according to claim 1 or 2 , wherein the first wall portion and the first mating wall portion of the first heel portion extend in the first opening direction from the first base portion. And the second wall portion and the second mating wall portion of the second flange portion are in the second opening direction from the second base portion. Lip opening device characterized in that the height to the extended edge is the same. 3. The lip opening device according to claim 1 , wherein the first mating wall portion of the first heel portion has an edge portion extending from the first base portion in the first opening direction. The second wall portion of the second flange portion extends in the second opening direction from the second base portion, and has a shape that extends lower than an edge portion of the first wall portion. A lip opening device having a shape in which an existing edge extends lower than an edge of the second wall. The lip opening device according to any one of claims 1 to 4 , wherein the first opening direction side edge of the first wall portion and the first opening direction of the first mating wall portion. The side edge portion is curved in a dome shape so that a central portion in the axial direction bulges gently in the first opening direction, and the second wall portion on the first opening direction side is curved. The edge portion and the edge portion on the second opening direction side of the second mating wall portion are curved in a dome shape so that the central portion in the axial direction gently bulges in the second opening direction. Lip opening device characterized by being. The lip opening device according to any one of claims 1 to 5 , wherein the first grip portion and the second grip portion, or the first grip portion and the second grip portion side of the first grip portion. The first handle portion and the second handle portion include the first handle portion and the second handle portion, or the first handle portion and the second handle portion. A lip opening device having a lock mechanism that locks when closed in the closing direction. The lip opening device according to claim 6 , wherein the lock mechanism includes a lock portion extending from the second handle portion toward the first handle portion, and the second handle from the first handle portion. A lip opening device having a locked portion that extends toward the portion and engages with the lock portion. The lip opening device according to any one of claims 1 to 7 , wherein the first and second buttocks are the first gripping portion and the second gripping portion being the first gripping portion. And a lip opening device, wherein the lip opening device is inclined in a substantially V shape when moved in the second closing direction. The lip opening device according to any one of claims 1 to 7 , wherein the first and second buttocks are the first gripping portion and the second gripping portion being the first gripping portion. And a lip opening device characterized by being positioned substantially parallel to each other when moved in the second closing direction. The lip opening device according to any one of claims 1 to 9 , wherein the first wall and the first opposing wall are opposed to each other, and the first continuous with the inner surface. The outer surface which is the outer side with respect to the inner surface of the base portion of 1 is in the shape of a circular arc plate, and the inner surface where the second wall portion and the second mating wall portion are opposed to each other and the inner surface is continuous. A lip opening device, characterized in that an outer surface that is an outer side with respect to an inner surface of the second base portion has an arc plate shape.

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