JP7399472B2 - dental treatment chair - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dental treatment chair, and more particularly to a dental treatment chair that allows patients, such as the elderly and physically handicapped, to receive treatment even in a seated position.

Traditionally, dental treatment chairs have been equipped with support arms (handrails) to help elderly and physically disabled people get on and off the chair in a stable manner, so that they can be used not only for healthy people but also for elderly people and people with physical disabilities. It is used. (For example, see Patent Document 1.)

Japanese Patent Application Publication No. 11-226066

However, even with a dental treatment chair equipped with such a support arm (handrail member), some patients with physical disabilities such as those with cerebral palsy may be unable to move their bodies unintentionally during treatment in a supine position. Treatment is difficult because voluntary movements are likely to occur, and it is necessary to perform medical treatment in a seated position that prevents such involuntary movements (reflex-suppressing limb position).
Furthermore, for elderly patients who exhibit symptoms such as sarcopenia, in which muscle mass decreases with aging and physical function declines, it is necessary to perform medical treatment while remaining seated.
When treating such physically disabled or elderly patients, not only is it difficult for the patient to maintain a sitting position, but medical treatment in a seated position is more unstable than in a supine position. Therefore, there is a risk that the patient may fall from the dental treatment chair.
This not only makes it difficult for the surgeon to concentrate on the medical treatment, but also creates a troublesome problem in that an assistant is required to keep the patient in a seated position during treatment.

The present invention has been made in view of the above-mentioned circumstances.In other words, an object of the present invention is to enable patients to sit stably without assistance even when treating physically disabled or elderly patients. To provide a dental treatment chair that securely maintains posture and is easy to use.

In order to solve the above-mentioned problems, the invention of claim 1 provides a contour seat on which a patient sits, an armrest provided on the contour seat on which the patient's elbow rests, and a sitting or standing motion of the patient with respect to the contour seat. A dental treatment chair equipped with an auxiliary support arm, wherein the support arm is pivoted in a cantilevered manner on one side of the contour seat to horizontally suspend the contour seat to maintain a seated state of the patient. The support arm has a handrail portion that is rotatable to a patient fixing position, and the armrest includes a handrail locking recess that removably locks the handrail portion of the support arm.

In addition to the structure of the dental treatment chair described in claim 1, the invention according to claim 2 provides that the armrest slides along a base body having the handrail locking recess and the base body so as to lock the handrail. It is characterized by being comprised of a slide cover that allows the locking recess to be opened and closed freely.

In addition to the structure of the dental treatment chair described in claim 2, the invention according to claim 3 provides that the slide cover has a slide rail that extends in the front-rear direction of the armrest and is shorter than the slide cover, and the base body The slide rail is characterized in that it has a guide that guides the slide rail, and a movement restriction wall that opposes the front end surface and the rear end surface of the slide rail and restricts its movement.

In addition to the dental treatment chair according to any one of claims 1 to 3, the invention according to claim 4 is characterized in that the armrest has a handrail portion of the support arm for locking the handrail of the armrest. It is characterized by having a locking mechanism that fixes the slide cover to the base body while being locked in the recess.

According to the dental treatment chair of the invention according to claim 1, the support arm is pivotally installed on one side of the contour seat in a cantilevered state, and the contour seat is placed horizontally to a patient fixing position where the patient is held in a seated state. The armrest has a handrail part that can be rotated freely, and the armrest has a handrail locking recess that removably locks the handrail part of the support arm, so that the handrail part of the support arm can horizontally suspend the contour sheet. Because it is positioned on the abdomen of a patient in a seated position, it is possible to securely maintain a stable sitting position without the need for assistance, even if the patient is physically disabled or elderly who have difficulty maintaining a seated position. To prevent a patient from falling from a dental treatment chair, reduce the burden of assisting a patient in a seated position during medical treatment, and enable a surgeon to concentrate on medical treatment.
Since the armrest is equipped with a handrail locking recess that removably locks the handrail of the support arm, the support arm becomes an armrest simply by locking the handrail of the support arm in the handrail locking recess. Since it is fixed, it is easy to use even when treating physically disabled or elderly people.

According to the dental treatment chair of the invention according to claim 2, in addition to the effects achieved by the dental treatment chair described in claim 1, the armrest has a base body provided with a handrail locking recess and a base body that extends along the base body. The slide cover slides to freely open and close the handrail locking recess, so that when the handrail of the support arm is locked in the handrail locking recess of the armrest, the slide cover locks the handrail of the armrest. Since the locking recess is closed and the patient's elbow is placed on the slide cover, fixation of the support arm by the armrest can be reliably maintained.

According to the dental treatment chair of the invention according to claim 3, in addition to the effects achieved by the dental treatment chair described in claim 2, the slide cover has a slide rail that extends in the front-rear direction of the armrest and is shorter than the slide cover. , the base body has a guide that guides the slide rail and a movement restriction wall that opposes the front and rear end surfaces of the slide rail and restricts movement, so that the patient's elbow placed on the slide cover moves. Even when the slide cover is opened, either the front end surface or the rear end surface of the slide rail comes into contact with the movement restriction wall of the base body and restricts the range of movement of the slide cover, which reliably prevents the slide cover from falling off and prevents the armrest from falling off. The fixation of the support arm can be maintained more reliably.

According to the dental treatment chair of the invention according to claim 4, in addition to the effects produced by the dental treatment chair described in any one of claims 1 to 3, the armrest allows the handrail portion of the support arm to be connected to the armrest. Equipped with a locking mechanism that locks into the handrail locking recess, even if the patient's elbow moves while placed on the slide cover and the slide cover attempts to interlock, the locking mechanism will not lock the slide cover into the base. Since it is fixed to the main body, the handrail portion of the support arm can reliably maintain the locked state of the handrail locking recess of the armrest.

FIG. 1 is a perspective view of a dental treatment unit equipped with a dental treatment chair according to an embodiment of the present invention. FIG. 1 is a plan view of a dental treatment unit equipped with a dental treatment chair according to an embodiment of the present invention. FIG. 1 is a front view of a dental treatment unit equipped with a dental treatment chair according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view taken along line A-A' shown in FIG. 2 when the slide cover is closed. FIG. 3 is a schematic sectional view taken along the line A-A' shown in FIG. 2 when the slide cover is opened. FIG. 3 is a schematic sectional view taken along the line B-B' shown in FIG. 2 when the slide cover is closed. FIG. 3 is a schematic sectional view taken along the line B-B' shown in FIG. 2 when the slide cover is opened.

The present invention is a dental treatment chair comprising a contour seat on which a patient sits, an armrest provided on the contour seat on which the patient's elbow rests, and a support arm that assists the patient in sitting or standing up from the contour seat. , the support arm is pivoted in a cantilevered manner on one side of the contour seat, and has a handrail portion that can be freely rotated to a patient fixation position where the contour seat is suspended horizontally and the patient is held in a seated state; However, it is equipped with a handrail locking recess that removably locks the handrail part of the support arm, ensuring a stable sitting posture without requiring assistance even when treating physically disabled or elderly patients. Any specific embodiment may be used as long as it is easy to maintain and use.

For example, the basic configuration of the dental treatment chair of the present invention includes a contour seat that supports the patient's buttocks, a backrest that is connected to the rear end of the contour seat and supports the patient's back, and a backrest that is connected to the backrest that supports the patient's back. a headrest that supports the patient's head; a leg rest that is connected to the front end of the contour seat and supports the patient's calves; and a step that is connected to the lower end of the leg rest and serves as a foot rest for the patient's feet. In addition to these, the contour sheet is attached to a work table, or the contour sheet is placed on a base that can be raised and lowered on the floor, or the contour sheet is installed on a base that has movable wheels and is placed on the floor. There is no problem even if it is something that can be assembled into one piece.

Regarding the support arm used in the dental treatment chair of the present invention, the support arm is pivotally installed on one side of the contour seat in a cantilevered state, and the contour seat is hung horizontally to maintain the patient's seated state. The support arm has a handrail part that can be rotated to any position to assist the patient in getting on and off the contour seat, and the handrail part of the support arm is positioned on the abdomen of the patient in the seated position with the contour seat placed horizontally. It may be of any form.

Furthermore, the handrail locking recess of the armrest for removably locking the handrail of the support arm may be provided on any of the upper surface, front surface, side surface, etc. of the front part of the armrest. When provided on the upper surface, it is easier for both the patient and the operator to visually recognize it, making it easier to use.

Embodiments of the dental treatment chair of the present invention will be described below with reference to the drawings.
In addition, in the following description, structures with the same reference numerals in different drawings are assumed to be the same, and the description thereof may be omitted.

<1. Overview of the dental treatment chair＞
FIG. 1 is a perspective view of a dental treatment unit equipped with a dental treatment chair according to an embodiment of the present invention, FIG. 2 is a perspective view of the dental treatment unit, and FIG. 3 is a front view of the dental treatment unit. be.
First, a dental treatment unit equipped with a dental treatment chair, which is an embodiment of the present invention, will be described based on FIGS. 1, 2, and 3.

As shown in FIGS. 1, 2, and 3, the dental treatment unit 100 includes a dental spittoon 110 and a dental treatment chair 120, which is an embodiment of the present invention.
Here, the dental spittoon 110 is placed on the side of the dental treatment chair 120.
Although not shown in the drawings, the dental treatment unit 100 includes, around a dental treatment chair 120, which is an embodiment of the present invention, a surgical light, a work table on which a holder holds various dental instruments, Equipped with foot switch etc.

Further, the dental treatment chair 120 according to the present embodiment includes a base 121 placed on the floor G, an elevating section 122 installed on the base 121, and a lifting section 122 placed on the elevating section 122 to support the patient's buttocks. a backrest 124 connected to the rear end of the contour sheet 125 to support the patient's back; a headrest 123 connected to the backrest 124 to support the patient's head; A leg rest 126 is connected to the front end of the foot to support the patient's calves, and a step 127 is connected to the lower end of the leg rest 126 and serves as a foot rest for the patient's feet.
In this figure, the left-right direction of the contour sheet 125 is defined from the rear end connected to the backrest 124 to the front end connected to the leg rest 126, based on the orientation of the patient seated on the dental treatment chair 120.

The base 121 is connected to an underfloor water supply and drainage pipe and an external compressed air source.
This base 121 is provided with an elevating section 122 that allows the contour sheet 125 to be moved up and down in the vertical direction.

The contour sheet 125 is a sheet that extends in the front-back direction and supports the patient's buttocks, and is in a substantially horizontal state with respect to the floor surface G.

The upright angle of the backrest 124 with respect to the contour seat 125 is adjustable.

The position of the headrest 123 in the vertical direction with respect to the backrest 124 is adjustable, and the standing angle with respect to the backrest 124 is adjustable.

The angle of the leg rest 126 with respect to the contour seat 125 is adjustable.

The angle of the step 127 relative to the leg rest 126 is adjustable.

<2. Support arm and armrest＞
Next, a support arm and an armrest, which are further components of the dental treatment chair according to this embodiment, will be explained based on FIGS. 1, 2, and 3.

The dental treatment chair 120 further includes a support arm 130 that assists the patient in sitting or standing up from the contour seat 125, and an armrest 140 that is provided on the contour seat 125 and on which the patient's elbow rests.

The support arm 130 is pivoted in a cantilevered manner to a support post 131 extending vertically from one side of the contour sheet 125 and a support post 131 provided on one side of the contour sheet 125. The handrail portion 132 is rotatable to a patient fixing position where the patient is held in a seated state by horizontally suspending the patient.
The support arm 130 is formed of, for example, a hollow round rod.

The armrest 140 includes a handrail locking recess 142 that removably locks the handrail portion 132 of the support arm 130.

<2.1. Movement of the support arm relative to the armrest>
1, 2, and 3, the support arm 130 is in a position where the handrail portion 132 crosses the contour sheet 125 and is locked in the handrail locking recess 142 of the armrest 140, that is, in the above-mentioned patient fixing position. is shown by a solid line.
In addition, in FIGS. 1 and 2, when the handrail portion 132 is in a position where the axial end thereof is directed substantially forward of the contour sheet 125 and the patient can enter and exit (hereinafter referred to as "patient entry/exit possible position"). The support arm 130 is shown by a two-dot chain line.
As shown by the arcuate arrows in FIGS. 1 and 2, the handrail portion 132 of the support arm 130 is located at a patient fixing position and allows the patient to enter and exit from the support arm 131 extending vertically from one side of the contour sheet 125. It can be rotated horizontally between positions.

First, the patient moves while being supported by the handrail 132 of the support arm 130, which is located at a position where the patient can enter/exit, and is seated on the contour seat 125 to reach a seated state.
In this sitting state, the handrail portion 132 of the support arm 130 allows the contour sheet 125 to be placed horizontally and positioned on the patient's abdomen (that is, at the patient fixed position) even if the patient has difficulty maintaining a seated posture. and keep the patient in a seated position.
As a result, even if the patient is physically disabled or elderly who have difficulty maintaining a sitting posture, the patient can be maintained in a stable sitting posture without any assistance, and the patient will not fall from the dental treatment chair. This reduces the burden of assisting patients in a seated position during medical treatment, allowing the surgeon to concentrate on medical treatment.

Further, at this patient fixing position, the handrail portion 132 of the support arm 130 is removably locked by the handrail locking recess 142 of the armrest 140.
As a result, the support arm 130 is fixed to the armrest 140 simply by locking the handrail portion 132 of the support arm 130 in the handrail locking recess 142, so even when treating a physically disabled or elderly person. Easy usability can be achieved.

Here, when the handrail locking recess 142 of the armrest 140 is formed as an upward opening, the handrail part 132 of the support arm 130 is attached to the column part 131 of the support arm 130, as shown by the up and down arrows in FIG. It is pivotally installed to be movable in the vertical direction.
In this case, when the handrail 132 of the support arm 130 is formed of, for example, a hollow round bar, the vertical movement spans at least the height of the diameter of the handrail 132.
Here, this movement in the vertical direction is realized, for example, by making the column part 131 of the support arm 130 movable up and down, or by making the handrail part 132 of the support arm 130 from a flexible material. be done.
With this configuration, the handrail portion 132 of the support arm 130 is moved from the top to the bottom and is locked by the handrail locking recess 142 of the armrest 140.

<3. Base body and slide cover>
4A is a schematic cross-sectional view when the slide cover is closed as seen from the line AA' shown in FIG. 2, and FIG. 4B is a schematic cross-sectional view when the slide cover is opened as seen from the line A-A' shown in FIG. It is a diagram.
Hereinafter, a base body and a slide cover that constitute an armrest of a dental treatment chair according to an embodiment of the present invention will be described based on FIGS. 4A and 4B.

The armrest 140 includes a slide cover 147 and a base body 141.

The slide cover 147 slides along the base body 141 to freely open and close the handrail locking recess 142.
Further, the slide cover 147 has a slide rail 148 that extends in the front-rear direction of the armrest 140 and is shorter than the slide cover 147.

The base main body 141 includes a guide 143 and a movement regulating wall 141a in addition to the above-mentioned handrail locking recess 142.
The handrail locking recess 142 locks the handrail portion 132 of the support arm 130.
The guide 143 guides the slide rail 148 and slides the slide cover 147 along the base body 141 as described above.
The movement restriction wall 141a is provided at a position facing the front end surface 148a and the rear end surface 148b of the slide rail 148, and restricts the movement of the slide rail 148.

As shown in FIG. 4A, when the slide cover 147 covers the entire upper surface of the base body 141 and closes the handrail locking recess 142, the front end surface 148a of the slide rail 148 is provided at a position opposite to the front end surface 148a. It is in contact with the movement regulating wall 141a of the base body 141 that has been moved.

Further, as shown in FIG. 4B, when the slide cover 147 is open without covering the handrail locking recess 142 of the base body 141, the rear end surface 148b of the slide rail 148 is in a position opposite to the rear end surface 148b. It is in contact with the movement regulating wall 141a of the base body 141 provided therein.

As a result, even if the patient's elbow placed on the slide cover 147 moves and the slide cover 147 opens, either the front end surface 148a or the rear end surface 148b of the slide rail 148 will not come into contact with the movement regulating wall 141a of the base body 141. Since the movement range of the slide cover 147 is restricted, the slide cover 147 can be reliably prevented from falling off, and the support arm 130 can be more reliably maintained in fixation by the armrest 140.

<4. Lock mechanism＞
5A is a schematic cross-sectional view when the slide cover is closed as seen from the line BB' shown in FIG. 2, and FIG. 5B is a schematic cross-sectional view when the slide cover is opened as seen from the line BB' shown in FIG. It is a diagram.
Hereinafter, a locking mechanism provided in an armrest of a dental treatment chair according to an embodiment of the present invention will be described based on FIGS. 5A and 5B.

Here, the locking mechanism 150 refers to a mechanism that locks the handrail portion 132 of the support arm 130 into the handrail locking recess 142 of the armrest 140.
This locking mechanism 150 is realized by the interaction of each component provided in the base body 141 and the slide cover 147 that constitute the armrest 140.

The base body 141 includes a lock pin 144, a spring 145, and a lock release pin 146 as part of the lock mechanism 150.
Further, a vertical through hole is formed in the rear end of the base body 141 at a position biased to either the left or right side and not in contact with the slide rail 148 described above.
The lock release pin 146 is inserted into the through hole from below the base body 141, and a spring 145 is provided at a position protruding from the opposite side of the through hole, and further terminates at the lock pin 144.
The spring 145 is formed of, for example, a compression coil spring, and urges the lock pin 144 upward.

The slide cover 147 includes a pin hole 149 as part of the lock mechanism 150.
As shown in FIG. 5A, the pin hole 149 is formed at a position facing the lock pin 144 when the slide cover is closed.
As a result, even if the patient's elbow placed on the slide cover 147 moves and the slide cover 147 attempts to interlock, the locking mechanism 150 fixes the slide cover 147 to the base body 141, so that the handrail portion 132 of the support arm 130 The state of being locked in the handrail locking recess 142 of the armrest 140 can be reliably maintained.

Further, as shown in FIG. 5B, to release the lock mechanism 150 when the slide cover is closed, hold the lock release pin 146 with your fingers and pull it downward so that the lock pin 144 comes out from the pin hole 149. .
Then, by sliding the slide cover 147 backward with respect to the base body 141 in this state, the slide cover 147 can be moved while the lock mechanism 150 is released.

In the thus obtained dental treatment chair 120 of this embodiment, the support arm 130 is pivotally mounted on one side of the contour seat 125 in a cantilevered state, and the contour seat 125 is suspended horizontally to allow the patient to sit in the seated state. By having a handrail part 132 that can be freely rotated to the fixed position of the patient to be held, even if the patient is a physically disabled or elderly person who has difficulty maintaining a seated posture, the patient can be held without the need for assistance. To prevent a patient from falling from a dental treatment chair 120 by reliably maintaining a stable sitting posture, and to reduce the burden of assisting the patient in the sitting posture during medical treatment, allowing the operator to concentrate on medical treatment.
Since the armrest 140 is provided with a handrail locking recess 142 that removably locks the handrail 132 of the support arm 130, it is easy to use even when treating a physically disabled or elderly person. The effects are enormous, such as being able to achieve the following.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive.
The scope of the present disclosure is indicated by the claims, not the above meaning, and is intended to include meanings equivalent to the claims and all changes within the range.

100...dental treatment unit,
110...Dental spittoon,
120...Dental treatment chair,
121...base,
122...lifting section,
123...headrest,
124...backrest,
125...contour sheet,
126...Leg rest,
127...step,
130...support arm,
131...Strut part,
132...handrail part,
140...Armrest,
141...base body,
141a...Movement restriction wall,
142...Handrail locking recess,
143...Guide,
144...Lock pin,
145...Spring,
146...Lock release pin,
147...slide cover,
148...slide rail,
148a...front end surface,
148b...rear end surface,
149...pin hole,
150...lock mechanism,
G...Floor surface.

Claims (4)

A dental treatment chair comprising a contour seat on which a patient sits, an armrest provided on the contour seat on which the patient's elbow rests, and a support arm that assists the patient in sitting or standing up relative to the contour seat, the chair comprising:
The support arm has a handrail portion that is pivotally installed in a cantilevered manner on one side of the contour sheet and is rotatable to a patient fixing position where the contour sheet is horizontally supported and the patient is held in a seated state. ,
A dental treatment chair, wherein the armrest includes a handrail locking recess that removably locks a handrail portion of the support arm. A claim characterized in that the armrest is composed of a base body having the handrail locking recess and a slide cover that slides along the base body to freely open and close the handrail locking recess. The dental treatment chair described in item 1. The slide cover has a slide rail that extends in the front-rear direction of the armrest and is shorter than the slide cover,
3. The base body has a guide for guiding the slide rail, and a movement regulating wall that opposes the front and rear end surfaces of the slide rail and regulates its movement. Dental treatment chair. Claim 1, wherein the armrest includes a locking mechanism that fixes the slide cover to the base body while the handrail of the support arm is locked in the handrail locking recess of the armrest. A dental treatment chair according to any one of claims 1 to 3.