JP2020054738A - Dental treatment unit - Google Patents

Abstract

To provide a dental treatment unit which improves the degree of freedom of arrangement in a treatment room and improves workability of a plurality of treating persons when the persons treat a patient.SOLUTION: A dental treatment unit includes: a chair 120 for dental treatment; an assistant holder 150 holding an instrument T used by a treating person; and an assistant arm 160 connecting the chair 120 for dental treatment and the assistant holder 150. The chair 120 for dental treatment has a contour seat 121 and a backrest 122. The assistant arm 160 has a first arm 161 whose front end is connected to a bottom 121a of the contour seat 121; and a second arm 162 whose one end is connected to a rear end of the first arm 161 and whose other end is connected to the assistant holder 150. The first arm 161 is freely rotatable toward both sides of the chair 120 for dental treatment, and the second arm 162 is freely rotatable with respect to the first arm 161.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a dental treatment unit including a dental treatment chair, an assistant holder, and an assistant arm.

BACKGROUND ART Conventionally, a dental unit is known in which an assistant unit provided on one side of a side of a patient chair is provided with a device used by a treatment assistant such as a dental hygienist or a dental assistant (for example, Patent Document 1). ).
A hanger support is rotatably attached to the lower end of the assistant unit.
At the other end of the hanger support, a hanger portion for suspending an instrument used by the assistant is provided rotatably in a horizontal plane with respect to the hanger support.

JP 2011-072418 A

In the dental unit described in Patent Literature 1, the hanger unit is attached to the assistant unit. Therefore, when the patient approaches the dental unit, the hanger unit hinders the approach, and the patient becomes unable to approach the assistant unit. It was difficult to approach the patient chair from the beginning.
That is, in the conventional dental unit, restrictions are placed on the arrangement of the dental unit in the treatment room.

  In addition, when treating a patient with a dentist and a treatment assistant, the hanger is located near the back of the treatment assistant, and the standing position and movement of the operator (dentist and treatment assistant) The range was limited.

  The present invention has been made in view of these circumstances, and provides a dental treatment unit that improves the degree of freedom of arrangement in a treatment room and improves the workability of a treating person when treating a patient with a plurality of persons. The purpose is to:

  In order to solve the above problem, the invention of claim 1 connects a dental treatment chair on which a patient sits, an assistant holder for holding an instrument used by an operator, and a connection between the dental treatment chair and the assistant holder. A dental treatment unit comprising: a dental treatment chair having a contour seat and a backrest, wherein the assistant arm has a front end connected to a bottom of the contour seat. An arm and a second arm having one end connected to the rear end of the first arm and the other end connected to the assistant holder, wherein the first arm is provided on both sides of the dental treatment chair. The second arm is rotatable with respect to the first arm.

  According to a second aspect of the present invention, in the first aspect of the present invention, a rotation resistance applying means for applying a rotation resistance between the first arm and the dental treatment chair is provided. is there.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a rotation range restricting means for restricting a rotation range of the second arm is provided.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the second arm is connected to the first arm and extends in a horizontal direction, and the second arm is connected to the assistant holder in a vertical direction. Has a bent arm that connects the horizontal arm and the vertical arm, and in a state where a backrest of the dental treatment chair is down, the dental treatment chair and A gap is formed between the vertical arm and the horizontal arm.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a connecting member for connecting the instrument held by the assistant holder and the dental treatment chair, wherein the connecting member is connected to the assistant arm. Is arranged outside the device.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, a spitton is provided on a side of the dental treatment chair, and the spitton is arranged outside a movable range of the assistant holder. It is characterized by the following.

  The invention of claim 7 is the invention according to any one of claims 1 to 6, wherein the second arm of the assistant arm is connected to the assistant holder at the center of the assistant holder. is there.

  According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, a rotation resistance between the second arm and the assistant holder causes a rotation resistance between the first arm and the second arm. It is characterized by being smaller than the turning resistance.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a dental treatment unit in which the degree of freedom of arrangement in a treatment room is improved and the workability of a treating person when treating a patient with a plurality of persons is improved.

The perspective view of the dental treatment unit concerning one embodiment of the present invention. The right view of the dental treatment unit concerning one embodiment of the present invention. The top view of the dental treatment unit concerning one embodiment of the present invention. FIG. 2 is an enlarged plan view around an assistant arm according to one embodiment of the present invention. VV sectional drawing of FIG. VI-VI sectional drawing of FIG. FIG. 2 is an exploded perspective view showing a connection structure between a first arm and a second arm according to one embodiment of the present invention.

Hereinafter, preferred embodiments of the dental treatment unit of the present invention will be described with reference to the drawings.
In the following description, the same reference numerals are given to the same components in different drawings, and the description thereof may be omitted.

<1. Outline of dental treatment unit>
First, a dental treatment unit 100 according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a dental treatment unit according to one embodiment of the present invention, FIG. 2 is a right side view of the dental treatment unit according to one embodiment of the present invention, and FIG. 3 is one embodiment of the present invention. FIG. 4 is an enlarged plan view around an assistant arm according to an embodiment of the present invention, FIG. 5 is a sectional view taken along line VV of FIG. 2, and FIG. 4 is a sectional view taken along the line VI-VI of FIG. 4, and FIG. 7 is an exploded perspective view showing a connection structure between the first arm and the second arm according to one embodiment of the present invention.

  As shown in FIG. 1, a dental treatment unit 100 includes a lower base 110 installed on a floor, a dental treatment chair 120 connected to the lower base 110, and a dental treatment chair 120 on which a patient sits, and a right side of the dental treatment chair 120. And a spitton 130 for supplying water required when the patient gargles, an operating light 140 connected to the left side of the dental treatment chair 120 and illuminating the inside of the patient's mouth, and a device used by the operator An assistant holder 150 for holding the T, an assistant arm 160 for connecting the assistant holder 150 and the dental treatment chair 120, and a connecting member 170 for connecting the instrument T and the dental treatment chair 120 are provided.

<1.2. Lower stand>
The lower base 110 is connected to a plumbing pipe under the floor, and has a built-in compressed air source.
The lower table 110 includes a lifting arm 111 (see FIG. 2) connected to the dental treatment chair 120 and a drive mechanism (not shown) for moving the lifting arm 111.
Thereby, the dental treatment chair 120 is vertically movable.

<1.3. Dental care chair>
The dental treatment chair 120 includes a contour sheet 121 that supports the buttocks of the patient, a backrest 122 that is connected to the contour sheet 121 and supports the back of the patient, and a headrest that is connected to the backrest 122 and supports the patient's head. And a headrest 123.

  The contour sheet 121 is a sheet that is flat in the horizontal direction, and the bottom 121 a is connected to the lifting arm 111 of the lower base 110.

As shown in FIG. 4, an arm receiver 121b connected to an assistant arm 160 described later is provided near the center on the left and right sides of the bottom 121a of the contour sheet 121, as shown in FIG.
A first position regulating pin 121b1 is provided on the left side of the peripheral side surface of the arm receiver 121b, and a second position regulating pin 121b2 is provided on the right side of the peripheral side surface of the arm receiver 121b.

A rear cover 121c that covers the arm receiver 121b is provided behind the bottom 121a of the contour sheet 121.
As shown in FIG. 7, an inverted L-shaped notch 121c1 is formed on the rear side of the rear cover 121c as viewed from the rear.

The upright angle of the backrest 122 with respect to the contour seat 121 is adjustable.
In addition, a concave portion 122a that can accommodate the headrest 123 is formed in an upper portion of the backrest 122.

  The vertical position of the headrest 123 with respect to the backrest 122 is adjustable.

<1.4. Spitton>
The spitton 130 includes a spitton arm 131 having one end connected to the bottom 121 a of the contour sheet 121, a water supply / drainage mechanism 132 connected to the other end of the spitton arm 131 and having a water supply / drainage mechanism therein, And a water spouting unit 134 provided above the water supply / drainage mechanism 132.
The spittons 130 are separated from the lower table 110 by a distance H, as shown in FIG.

The spitton arm 131 rotates with respect to the dental treatment chair 120.
Further, between the spitton arm 131 and the dental treatment chair 120, a spitton arm rotation range restricting means (not shown) for restricting the rotation range of the spitton arm 131 is provided.
As a result, as shown in FIG. 3, the spitton arm 131 is rotatable in a range indicated by θa (spitton arm rotation range).

Further, between the spitton arm 131 and the dental treatment chair 120, a spitton arm rotation resistance applying means (not shown) is provided.
By this spitton arm rotation resistance applying means, it is possible to make it difficult for the spitton arm 131 to rotate with respect to the dental treatment chair 120.
In addition, between the spiton arm 131 and the dental treatment chair 120, a spitton arm rotation lock means (not shown) for locking the rotation of the spitton arm 131 is provided.
By this spitton arm rotation locking means, the position of the spitton arm 131 with respect to the dental treatment chair 120 can be fixed at a predetermined position.

The water supply / drain mechanism 132 is supplied with power from the dental treatment chair 120 and is connected to the dental treatment chair 120 by a water supply pipe and a drain pipe (both not shown).
An electromagnetic valve and the like are provided inside the water supply and drainage mechanism 132.
The solenoid valve is connected to the above-described water supply pipe and the water discharge section 134, and controls water discharge to the water discharge section 134.
At the top of the water supply / drainage mechanism 132, a cup tray 132a on which a cup used by the patient for gargle is placed is provided.

The water supply and drainage mechanism 132 configured as described above rotates with respect to the spitton arm 131.
Further, between the water supply / drainage mechanism 132 and the spitton arm 131, a spitton rotation range restricting means (not shown) for restricting the rotation range of the water supply / drainage mechanism 132 is provided.
Thereby, as shown in FIG. 3, the water supply and drainage mechanism 132 is rotatable in a range indicated by θb (the water supply and drainage mechanism rotation range).

Further, between the water supply / drainage mechanism 132 and the spitton arm 131, a spitton rotation resistance applying means (not shown) is provided.
By this spitting rotation resistance applying means, it is possible to make it difficult for the water supply / drainage mechanism 132 to rotate with respect to the spitton arm 131.
Further, between the water supply / drainage mechanism 132 and the spitton arm 131, a spitton rotation lock means (not shown) for locking the rotation of the water supply / drainage mechanism 132 is provided.
With this spitton rotation locking means, the position of the water supply and drainage mechanism 132 with respect to the spitton arm 131 can be fixed at a predetermined position.

<1.5. Assistant Holder>
As shown in FIGS. 3 and 4, the assistant holder 150 has a rectangular shape in plan view.
The assistant holder 150 holds a plurality of instruments T such as a vacuum for sucking the inside of the oral cavity and a syringe for ejecting water or air.
The assistant holder 150 has a water discharge button 151 for opening and closing a solenoid valve of the water supply and drainage mechanism 132 of the spitton 130.
By pressing the water discharge button 151, water discharge is started from the water discharge unit 134.

The assistant holder 150 is rotatable with respect to the assistant arm 160.
The rotation center Ph of the assistant holder 150 is the center of the assistant holder 150 in the front-rear direction and the left-right direction.
Note that the “center” here means approximately the center of the assistant holder 150 in the front-rear direction and the left-right direction.

<1.6. Connection member>
The connection member 170 is, for example, an electric wiring or a hose, and one end is connected to a terminal or a joint in the dental treatment chair 120.
The connecting member 170 is not connected to the instrument T through the inside of the assistant arm 160 but is exposed from the assistant arm 160 and connected to the instrument T.
That is, connection member 170 is arranged outside assistant arm 160.

<2. Assistant Arm>
As shown in FIG. 2, the assistant arm 160 has a front end connected to the dental treatment chair 120 and a first arm 161 that rotates with respect to the dental treatment chair 120, and a rotation with respect to the first arm 161. And a second arm 162 to be used.

<2.1. 1st arm>
The first arm 161 is a member that extends in the horizontal direction as shown in FIGS. 2 and 5 and the like. As shown in FIG. 6, a first rotation shaft 161a is attached to the front end side.
A male screw is formed on the lower end side of the first rotation shaft 161a.
Further, a pin 161b is provided on the lower surface on the front end side of the first arm 161 as shown in FIG.

As shown in FIG. 7, a circular opening 161c in a plan view is formed on the rear end side of the first arm 161.
Outside the opening 161c of the first arm 161 is further formed an arc-shaped rotation range restricting groove 161d in plan view.

  Further, as shown in FIG. 6 and the like, a cable holder 161e that holds a connection member 170 that connects the instrument T and the dental treatment chair 120 is provided at a lower portion on the rear end side of the first arm 161.

<2.2. Second arm>
As shown in FIG. 2, the second arm 162 has a front end connected to the rear end of the first arm 161 and a rear end connected to the assistant holder 150.
The second arm 162 smoothly connects the horizontal arm 162a connected to the first arm 161, the vertical arm 162b connected to the assistant holder 150, and the horizontal arm 162a and the vertical arm 162b. And a bent arm 162c.

  The horizontal arm portion 162a extends in the horizontal direction as shown in FIG. 2, and a second rotation shaft 162a1 extending in the vertical direction is fixed to the front end side with a bolt B as shown in FIG.

The vertical arm 162b extends in the vertical direction as shown in FIG.
The assistant holder 150 is rotatable with respect to the vertical arm 162b.

As shown in FIG. 2, a gap Dv is formed in a vertical direction between the horizontal arm 162 a and the dental treatment chair 120 when the backrest 122 of the dental treatment chair 120 is tilted.
When the backrest 122 of the dental treatment chair 120 is folded down, a gap Dh is formed between the vertical arm 162b and the dental treatment chair 120 in the horizontal direction.

<2.3. Connection between the dental treatment chair and the first arm>
The first arm 161 is connected to an arm receiver 121b of the contour sheet 121 via a first rotation shaft 161a.
As a result, the first arm 161 is rotatable with respect to the arm receiver 121b, and the first arm 161 is rotated with respect to the dental treatment chair 120.

The first rotation shaft 161a is prevented from falling out of the arm receiver 121b by screwing the first arm fastening nut N1 having a female screw toward the first rotation shaft 161a.
Then, by adjusting the degree of tightening of the first arm fastening nut N1, the first rotating shaft 161a becomes difficult to rotate.
That is, the first arm fastening nut N <b> 1 is a first arm rotation resistance applying unit that applies rotation resistance to the first arm 161 that applies rotation resistance between the first arm 161 and the dental treatment chair 120 ( (Rotational resistance applying means).

Further, as shown in FIG. 4, the pin 161b of the first arm 161 moves in a range θ1 formed between the first position regulating pin 121b1 and the second position regulating pin 121b2 of the arm receiver 121b.
Therefore, the rotation range of the first arm 161 is limited to θ1, and the first arm 161 is rotatable inside the notch 121c1 as shown in FIG.
That is, the first arm 161 is rotatable toward both left and right sides of the dental treatment chair 120.

<2.4. Connection of first arm and second arm>
As shown in FIGS. 6 and 7, in order to connect the first arm 161 and the second arm 162, the second rotation shaft 162a1 is inserted into the opening 161c of the first arm 161.
Then, the bolt B is inserted in the order of the rotation range regulating groove 161d and the second rotation shaft 162a1.
In this state, the bolt B is screwed into the horizontal arm 162a, and finally, the second arm fastening nut N2 is screwed into the second rotation shaft 162a1.
The second rotating shaft 162a1 is prevented from coming off the first arm 161 by screwing the second arm fastening nut N2 having a female screw toward the second rotating shaft 162a1. .
Thus, the second arm 162 is rotatable with respect to the first arm 161, and the second arm 162 is rotated with respect to the first arm 161.

By adjusting the degree of tightening of the second arm fastening nut N2, the second rotating shaft 162a1 is less likely to rotate.
That is, the second arm fastening nut N2 functions as a second arm rotation resistance applying unit that applies rotation resistance between the first arm 161 and the second arm 162.

The rotation range θ2 of the second arm 162 is only the range where the rotation range restriction groove 161d is formed, as shown in FIGS.
That is, the rotation range restriction groove 161d functions as a rotation range restriction unit for restricting the rotation range of the second arm 162.

Note that the rotation resistance (the difficulty of rotation) between the first arm 161 and the second arm 162 is greater than the rotation resistance between the second arm 162 and the assistant holder 150.
That is, the rotation resistance between the second arm 162 and the assistant holder 150 is smaller than the rotation resistance between the first arm 161 and the second arm 162.

<2.5. Movable range of assistant holder>
As described above, since the rotation range θ1 of the first arm 161 and the rotation range θ2 of the second arm 162 are determined, the movable range θA of the assistant arm 160 becomes the range shown in FIG. It is almost possible to take any position on the back side of the treatment chair 120.
In addition, as described above, the assistant holder 150 is rotatable 360 degrees with respect to the assistant arm 160, so that the assistant holder 150 can be substantially moved on the back side of the dental treatment chair 120.

Further, as shown in FIG. 3, the movable range of the assistant holder 150 (that is, the movable range of the assistant arm 160) does not overlap with the movable range θs of the spiton 130.
That is, the spitons 130 are arranged outside the movable range of the assistant holder 150.

<3. Effect>
In the dental treatment unit 100 configured and operated as described above, the first arm 161 is rotatable toward both sides of the dental treatment chair 120, and the second arm 162 is rotated with respect to the first arm 161. By being movable, the assistant holder 150 can move freely behind the dental treatment chair 120, so that there is no restriction on the introduction position of the patient, and the degree of freedom in arranging the dental treatment unit in the treatment room can be improved. .
Further, when a plurality of operators treat a patient, the standing position and working environment of the operator can be sufficiently ensured, so that the operability of the operator can be improved.

  Further, since the first arm 161 is provided with the first arm fastening nut N1 which is a rotation resistance applying means for applying the rotation resistance to the first arm 161, the rotation resistance is applied to the first arm 161. The first arm 161 can be prevented from rotating even when the body of the operator is in contact with the arm 161.

  Furthermore, since the second arm 162 is provided with the rotation range restricting groove 161d, which is a rotation range restriction means for restricting the rotation range of the second arm 162, the second arm 162 does not rotate 360 degrees. The arm 162 can be prevented from contacting the dental treatment chair 120.

  Furthermore, gaps Dh and Dv are formed between the dental treatment chair 120 and the vertical arm portion 162b and the horizontal arm portion 162a in a state where the backrest 122 of the dental treatment chair 120 is tilted, so that the backrest is reduced. Even if the assistant arm 160 is rotated in a state in which the backrest 122 is tilted, the position of the assistant holder 150 is adjusted even in a state in which the backrest 122 is tilted because the assistant arm 160 does not contact the dental treatment chair 120. This makes it possible to further improve the workability of the operator.

  Further, since the connecting member 170 is disposed outside the assistant arm 160, the assistant arm 160 can be made thinner than when the connecting member 170 is passed through the inside of the assistant arm 160. As a result, the moment of inertia of the assistant arm 160 and the bending moment of the assistant arm 160 on the dental treatment chair in the vertical direction can be reduced.

  Further, since the spittons 130 are arranged outside the movable range θA of the assistant holder 150, the assistant holder 150 does not contact the spittons 130, so that the position of the assistant holder 150 can be adjusted regardless of the positions of the spittons 130. Thus, the operability of the operator can be further improved.

  Further, since the second arm 162 of the assistant arm 160 is connected to the assistant holder 150 at the center of the assistant holder 150, the assistant arm 160 is connected to the assistant arm 160 at the end of the assistant holder 150. Since the turning radius of the tool T housed at the position farthest from the connection portion between the holder 150 and the assistant arm 160 is reduced, the usability for the operator using the tool T housed in the assistant holder 150 is improved. be able to.

  Furthermore, since the turning resistance between the second arm 162 and the assistant holder 150 is smaller than the turning resistance between the first arm 161 and the second arm 162, the operator turns the assistant holder 150. At this time, since the rotation to the second arm 162 is suppressed, the workability of the operator using the tool T stored in the assistant holder 150 can be further improved.

<Modification>
The embodiments for carrying out the present invention have been described above, but the present invention is not limited to the above.

  For example, in the above embodiment, the spitton 130 is connected to the right side of the dental treatment unit 100 and the surgical light 140 is connected to the left side. However, the spitton is connected to the left side of the dental treatment unit 100 and the surgical light is connected to the right side. Alternatively, a spitton and an operating light may be connected to the same side of the dental treatment unit 100.

For example, in the above embodiment, the lower base 110 has a built-in compressed air source, but the compressed air source may be provided outside the dental treatment unit 100.
In this case, the lower base 110 is connected to a compressed air source provided outside the dental treatment unit 100.

  For example, in the above embodiment, the assistant holder holds a plurality of devices, but the number of the held devices may be one.

  For example, in the above embodiment, the spitton can be moved up and down together with the dental treatment chair, but may be fixed to the floor.

  For example, in the above embodiment, the spitton rotates together with the water supply / drainage mechanism, but only the spitton body may rotate.

  For example, in the above embodiment, the surgical light is provided on the dental treatment chair, but it may be provided on the floor or ceiling to be separate from the dental treatment chair.

100 dental treatment unit 110 lower table 111 lifting arm 120 dental treatment chair 121 contour sheet 121a bottom 121b arm receiver 121b1 first position regulating pin 121b2 second position regulating pin 121c rear cover 121c1 Notch 122… Backrest 123… Headrest 130… Spitton 131… Spitton arm 132… Water supply / drainage mechanism 133… Spitton main body 134… Water discharging section 140… Operating light 150… Assistant holder 151… Water discharging button 160… Assistant arm 161… First arm 161a: first rotation shaft 161b: pin 161c: opening 161d: rotation range regulating groove (rotation range regulating means)
161e Cable holder 162 Second arm 162a Horizontal arm 162a1 Second rotation shaft 162b Vertical arm 162c Bend arm 170 Connection member

T: instrument N1: first arm fastening nut (rotation resistance applying means)
N2: second arm fastening nut B: bolt

Dh: gap Dv: gap Ph: center of rotation of assistant holder θ1: range of rotation of first arm θ2: range of rotation of second arm θA: range of movement of assistant arm θa: range of rotation of spitton arm θb: water supply / drainage mechanism Rotation range θs… Spitton rotation range

Claims (8)

A dental care chair in which a patient is seated, an assistant holder for holding an instrument used by a proctor, and a dental care unit including an assistant arm for connecting the dental care chair and the assistant holder,
The dental treatment chair has a contour sheet and a backrest,
The assistant arm includes a first arm having a front end connected to the bottom of the contour sheet, and a second arm having one end connected to the rear end of the first arm and the other end connected to the assistant holder. Have
The first arm is rotatable toward both sides of the dental treatment chair,
The dental treatment unit, wherein the second arm is rotatable with respect to the first arm.   The dental treatment unit according to claim 1, further comprising a rotation resistance applying unit that applies a rotation resistance between the first arm and the dental treatment chair.   The dental treatment unit according to claim 1, further comprising a rotation range restricting unit that restricts a rotation range of the second arm. A second arm connected to the first arm and extending in a horizontal direction, a horizontal arm connected to the assistant holder and extending in a vertical direction, and connecting the horizontal arm and the vertical arm; Having a bent arm portion,
A gap is formed between the dental treatment chair and the vertical arm and the horizontal arm in a state where the backrest of the dental treatment chair is folded down, according to claim 1, wherein: A dental treatment unit according to any one of the preceding claims. A connection member that connects with the instrument and the dental treatment chair held by the assistant holder,
The dental treatment unit according to any one of claims 1 to 4, wherein the connection member is arranged outside the assistant arm. Spitton is provided on the side of the dental treatment chair,
The dental treatment unit according to any one of claims 1 to 5, wherein the spitton is arranged outside a movable range of the assistant holder.   The dental treatment unit according to any one of claims 1 to 6, wherein a second arm of the assistant arm is connected to the assistant holder at the center of the assistant holder. The rotation resistance between the second arm and the assistant holder is smaller than the rotation resistance between the first arm and the second arm. A dental treatment unit according to claim 1.