JP4917863B2 - Dental treatment chair pillow equipment - Google Patents

Description

  The present invention accurately holds the head at the time of medical treatment for any person such as a short patient such as a woman or a child, a tall patient, and a patient whose back is bent like an elderly person or a handicapped person. It relates to a dental treatment chair pillow apparatus.

As a conventional pillow apparatus of this type, there is a technique disclosed in Japanese Utility Model Publication No. 58-48231 filed by the applicant company of the present invention. In this technique, a pillow support plate for moving the pillow up and down with respect to the backrest is curved, and when the pillow support plate is raised by a drive mechanism such as a hydraulic cylinder, the pillow follows the curve. When the pillow is moved toward the occipital region of the sitting patient and lowered, the pillow tilts backward in the upper part of the backrest. In such a structure, it was possible for a healthy person to hold the patient's head with a pillow in an optimal state regardless of the height.
Japanese Utility Model Publication No. 58-48231

  By the way, in the technique of the above-described known example, when a patient with a bent back and a leaning posture is seated on a dental treatment chair in an elderly person or a handicapped person, the above-described pillow support plate is changed in any way, and No matter how the pillow was changed with respect to the pillow support plate, the head support part of the pillow did not reach the patient's head, and treatment with a stable posture was not possible. In addition, when the patient is supine in a surgical posture, the head is in a state of floating because the head does not reach the pillow, and there is a problem that the patient is extremely painful and tired.

  The present invention is intended to solve the above-described problems, and its purpose is to treat in a sitting state and in a supine state regardless of the height and the deformed posture of the back. It is an object of the present invention to provide a pillow device for a dental treatment chair that can hold a patient's head and receive treatment in an easy state during treatment.

The pillow apparatus of the dental treatment chair according to the present invention achieves the above-mentioned object, and the means of claim 1 includes a seat part that can be raised and lowered, a backrest that can be raised and lowered with respect to the seat part, and A pillow support plate that moves up and down on the back side and protrudes from the upper part of the backrest and is curved toward the head side of the sitting or supine patient, and the pillow support plate that is housed in the back surface of the backrest A pillow angle cylinder for moving up and down, a pillow lifting cylinder for moving up and down the pillow angle cylinder, and a pin fixed to a pillow mounting base disposed between the pillow support plate and the pillow. A gripping member that is pivotally attached to the pillow support plate via a fixing pin and is pivotally supported with respect to the two fixing pins. A large number of pins formed on the fixing pin of the member and arranged in a ring shape A pin that is housed in the gripping member with respect to the insertion hole and is spring-biased, and the pin is retracted from the pin insertion hole against the spring force by gripping, and when the grip is released, the spring force The present invention is characterized by comprising a pillow rotating device having a biaxial structure comprising a gripping operation plate for engaging the pin with the pin insertion hole .

  In the present invention, as described above, the tip of the curved pillow support plate is moved toward the patient's head side by the pillow angle cylinder, and the two shafts can be rotated to the pillow support plate and fixed at a desired rotation position. Since the pillow is attached to the tip of the pillow rotating device having the structure, the pillow rotating device can be fixed at the desired rotation position with respect to the pillow support plate, and the pillow can be fixed at the desired rotation position with respect to the pillow rotating device. Therefore, the head of the patient can be surely placed in any of the sitting positions of all patients such as the difference in height of healthy persons and the elderly with bent back and the posture to receive medical treatment in the supine state. Since it can be held and moved up and down by a pillow lifting cylinder that further moves the pillow angle cylinder up and down, it has the effect of being able to hold the head more reliably even for patients of any body shape It is.

  According to the present invention, the tip of a curved pillow support plate is moved toward the head of the patient by a pillow angle cylinder so that the pillow can be rotated at the tip of the pillow support plate and fixed at a desired angular position. A pillow was attached to the tip of the device.

Hereinafter, an embodiment of a pillow apparatus for a dental treatment chair according to the present invention will be described with reference to the drawings.
FIG. 1 shows a main part of a pillow apparatus A according to the present invention, and this pillow apparatus A is mounted on a backrest B1 of a dental treatment chair B shown in FIGS. The dental treatment chair B includes a seat B2 for a patient to sit on, a lifting means B3 for lifting and lowering the seat B2, and a backrest B1 that is attached to the front of the seat B2 and lies down. It consists of an anterior sag B4 that holds the patient's lower limb. In the above configuration, a known dental treatment chair has a known structure.

  Next, the details of the pillow apparatus will be described with reference to FIG. 1. A slide receiving plate 2 in which a square tube portion 2a is partially formed on the back plate 1 attached to the back surface of the backrest B1 is used. A square cylindrical slide cylinder 3 is guided on the plate 2 so as to be movable up and down. Further, a bracket 2b is formed at the lower end of the slide receiving plate 2, and the piston 4a side of the pillow lifting cylinder 4 is pivotally supported by the lot pin 2c on the bracket 2b, and the tip of the ram 4b of the pillow lifting cylinder 4 is the slide. While being pivotally supported by the cylinder 3, the piston 5a side of the pillow angle cylinder 5 accommodated in the slide cylinder 3 is pivotally supported by the lot pin 4c. Therefore, when oil is supplied into the pillow lifting cylinder 4 and the ram 4a protrudes, the slide cylinder 3 rises on the back surface of the backrest B1, and descends when the oil is discharged.

  The upper end of the slide cylinder 3 is inclined toward the front side of the backrest B1, and a support plate guide portion 3a having four guide pins 3 for guiding a pillow support plate 6 described later is attached. The pillow support plate 6 is curved in a side shape, the lower end side is guided by the support plate guide portion 3a, and the lower end is pivotally supported by the tip of the ram 5b of the pillow angle cylinder 5 and the lot pin 5c. Accordingly, when oil is supplied to the pillow angle cylinder 5 and the ram 5b is protruded, the upper end of the pillow support plate 6 protrudes from the support plate guide portion 3a and moves upward on the front side of the backrest B1, and the oil is discharged. If it is done, it will be returned into the slide cylinder 3. Reference numeral 7 denotes a cover for covering the slide cylinder 3, the pillow lifting cylinder 4 and the pillow angle cylinder 5.

As described above, when the ram 4b of the pillow raising / lowering cylinder 4 is raised, the slide cylinder 3 is raised. Therefore, when the pillow angle cylinder 5 is raised and the ram 5b is raised at this raised position, the upper end of the pillow support plate 6 is It protrudes further forward from a high position. Accordingly, since the pillow 9 attached to the pillow support plate 6 via a pillow rotating device 8 having a biaxial structure described later changes from the state of FIG. 2 to the state of FIG. 3, the pillow 9 is at a high position and forward. Will protrude considerably.

Next, details of the biaxial pillow turn device 8 will be described with reference to FIGS.
81 is a bolt-shaped fixing pin fixed to the bifurcated portion of the bifurcated pillow mounting base 9a whose one end is fixed to the pillow 9, and a plurality of pin insertion holes are formed inside the head of the fixing pin 81. 81a is formed. Reference numeral 82 denotes a fixing pin which is the same as the fixing pin 81 fixed to the upper end bifurcated portion of the pillow support plate 6, and a plurality of pin insertion holes 82a are formed inside the head.

  Reference numeral 83 denotes a gripping member formed with a shaft portion 83a whose both ends are rotatably supported with respect to the fixing pins 81 and 82. The shaft portion 83a has a plurality of pieces (as shown in FIG. 1 in the illustrated case). And four pins 84) are inserted and spring-biased toward the pin insertion hole 81a by the spring 84a. Reference numerals 85 and 86 denote a holding and fixing operation plate and a fixing plate which are fixed to the holding member 83 by screws 85 a passing through the screw insertion holes 83 b, and are movable between the fixing plate 86 and the holding member 83. A lock plate 87 is disposed, and a groove 84 b formed in the pin 84 is engaged with both ends of the lock plate 87. Reference numeral 88 denotes a grip operation plate integrated with the lock plate 87 by screws 87a, and a person who operates the grip operation plate 88 and the grip fixing operation plate 85 grasps the lock plate 87 with the spring. It moves to the left in FIG. 4 against the spring force of 84a. As a result, the pin 84 is configured to move leftward in the drawing and come out of the pin insertion hole 81a.

The operation of the pillow rotating device 8 having the two- axis structure configured as described above is performed in the state shown in FIG. 4 (the state where the pin 84 is inserted into the pin insertion hole 81a, that is, the locked state). When the operation plate 88 is gripped against the spring force of the spring 84a, the grip operation plate 88 moves the lock plate 87 to move the pin 84 in the direction of coming out of the pin insertion hole 81a. Thereby, the pillow rotating device 8 can rotate with respect to the pillow support plate 6, and the pillow 9 can rotate with respect to the pillow rotating device 8. Thereby, the pillow 9 can be displaced to various angular positions with respect to the pillow support plate 6.

  When the doctor or assistant determines that the position of the pillow 9 is the desired position and releases the hand from the grip fixing plate 85 and the grip operation plate 88, the grip operation plate 88 is returned by the spring force of the spring 84a, so the pin 84 is fixed. The pin 81 enters any pin insertion hole 81a formed in the pin 81 to be locked, and the pillow can be held in a fixed state at the desired position. The reason why the plurality of pins 84 is provided is that one of the plurality of pins 84 is inserted into any one of the many pin insertion holes 81a, and therefore the pitch is smaller than the pitch number of the pin insertion holes 81. This is because it can be fixed with. In this case, it is necessary that the pitches of the plurality of pins 84a are not equal but shifted.

  In the pillow apparatus configured as described above, when the patient sitting on the dental treatment chair B4 is short, the ram 4b of the pillow lifting cylinder 4 is extended as shown in FIG. The ram 5b of the cylinder 5 is accommodated and the pillow 9 is lowered to the lowest position. Next, the patient's head can be supported by rotating the pillow rotating device 8 downward on the front side of the backrest B1 and dropping the pillow 9 below the backrest B1. In addition, in the case of a short patient such as a child, the position of the pillow 9 is further lowered by storing the ram 4b of the pillow lifting cylinder 4.

  Further, in the case of a patient whose back is bent, such as an elderly person or a handicapped person, a large gap is generated between the backrest B1 and the patient's back. Therefore, as shown in FIG. The ram 5b of the pillow angle cylinder 5 is protruded and the pillow 9 is raised to the uppermost position. Next, the patient's head can be supported by rotating the pillow rotating device 8 in the horizontal direction and making the pillow 9 substantially parallel to the backrest B1.

  Although not shown, in the case of a patient having a high height, only the ram 4b of the pillow lifting cylinder 4 is extended, or the pillow angle cylinder 5 is also extended and the pillow rotating device 8 is extended as the backrest B1. It is possible to support the patient's head by using the pillow 9 in the same manner.

  Next, when the patient is placed in a supine posture by treatment or the like, the backrest B1 is laid down and the anterior sag B4 is brought into a horizontal state. In this state, in the case of a short stature person, the head of the patient can be supported by the pillow 9 as shown in FIG. Further, in the case of a tall person, as shown in FIG. 9, the head of the patient is turned by turning the pillow turning device 8 above the backrest B1 and turning the pillow 9 to the pillow turning device 8 side. Can be supported by the pillow 9. In the case of a patient whose back is bent, such as an elderly person or a handicapped person, since it is difficult to treat in a supine posture, treatment is generally performed in a sitting position.

It is sectional drawing of the pillow apparatus of the dental treatment chair which concerns on this invention. It is the side view which showed the movement of the pillow in the state which moved the pillow support plate. It is the side view which showed the movement of the pillow in the state which rotated the pillow support plate and the pillow rotation apparatus. It is sectional drawing which shows the locked state of a pillow rotation apparatus. It is sectional drawing which shows a non-locking state same as the above. It is a side view which shows the sitting state of the patient in which the spine is bent. It is a side view which shows the seating state of short patients, such as a child. It is a side view which shows the supine state of short patients, such as a child. It is a side view which shows the supine state of a tall patient.

Explanation of symbols

B dental chair B1 backrest B2 seat 4 pillow lifting cylinder 5 pillow angle cylinder 6 Makurasasae plate 8 pillows rotating device 9 pillow

Claims (1)

A seat that can be raised and lowered;
A backrest that can be raised and lowered relative to the seat;
A pillow support plate that moves up and down on the back side of the bend and protrudes from the upper part of the backrest and is curved toward the head side of the sitting or supine patient;
Pillow angle cylinder stored in the back of the backrest for moving the pillow support plate up and down;
A pillow lifting cylinder for vertically moving the pillow angle cylinder;
It is arranged between the pillow support plate and the pillow, and is pivotally attached to a pillow mounting base attached to the pillow via a fixing pin, and is also rotatable to the pillow support plate via a fixing pin. A gripping member that is pivotally supported with respect to the two fixed pins, and a plurality of pin insertion holes formed in the fixed pin of the gripping member and arranged in a ring shape. The pin is retracted from the pin insertion hole against the spring force by gripping it, and the pin is moved into the pin insertion hole by the spring force when the grip is released. A biaxial pillow turn device comprising a gripping operation plate to be engaged;
A pillow apparatus for a dental treatment chair, characterized by comprising:

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