This application claims the priority benefit of CN Application No. 201711012725.2 filed on Oct. 26, 2017, which are hereby expressly incorporated by reference in their entirety for all purposes.
This invention relates generally to medical instruments and more particularly to a dental treatment machine with a retractable backrest for children.
A dental treatment machine is a commonly used medical instrument in department of stomatology. The height, the backrest and the headrest of the prior art dental machines are often fixed, and therefore they cannot accommodate children comfortably because children cannot maintain their relaxed seated or lying posture on the prior art dental treatment machines. In addition, children are easy to move, which also may increase the difficulty of treatment.
The present invention is proposed in view of the above aforementioned problems. In order to overcome the problems of the prior art dental machines, the foregoing technical solutions are adopted in an embodiment of a dental treatment machine for children having a headrest, a retractable backrest, a cushion, and a base. The dental treatment machine further includes a multimedia structure and a seat adjustment means. The seat adjustment means according to the embodiments of the present invention may include a seat lifting part, a backrest rotating part and a backrest expansion part. The seat lifting part is disposed between the base and the cushion of the dental treatment machine for vertically adjusting the distance between the base and the cushion and thus selectively adjusting the height therebetween. On the other hand, the backrest rotating part and the backrest expansion part are disposed respectively between the cushion and the retractable backrest for rotating and telescoping the backrest with respect to the cushion.
In one embodiment, the seat lifting part may include an adjustment bracket, a lift motor and a gas spring, where the adjustment bracket is rotatably connected to the base on one end. The other end of the adjustment bracket has two sides, where the gas spring is rotatably connected between one side of the adjustment bracket and the base, and the lift motor is rotatably connected between the other side of the adjustment bracket and the base through a motor pin. An output shaft of the lift motor is sheathed with a plastic sleeve which is screwed to the output shaft while an upper end of the plastic sleeve is rotatably connected to the lower surface of the cushion.
In a preferred embodiment, the seat lifting part is configured to raise the cushion such that the distance between the cushion and the base is about 350-730 mm.
The backrest rotating part according to the embodiments of the present invention may include an angle adjustment motor, a transmission shaft and an aluminum bending plate. An upper end of the cushion which is in vicinity of the backrest is provided with the transmission shaft, where the cushion is rotatably connected with the aluminum bending plate through the transmission shaft and the angle adjustment motor is fixedly connected to one end of the transmission shaft. In the preferred embodiment, the angle adjustment between the respective plane of the retractable backseat and the cushion is about 0°˜68°.
The backrest expansion part according to the embodiments of the present invention may include a telescopic adjustment motor, a push rod, a backboard, a slider, and a sliding rail. In this embodiment, the telescopic adjustment motor is fixedly mounted on the aluminum bending plate and is connected to the push rod, where the slider is fixed on an upper end of the push rod and is connected to the sliding rail in a sliding mode. The sliding rail is disposed on the aluminum bending plate so as to correspond to both sides of the slider. The backboard is fixed onto a front surface of the slider while the retractable backrest is being attached to a front surface of the backboard. In the preferred embodiment, the distance adjustment between the retractable backrest and the cushion is about 0˜50 mm.
In yet another embodiment, a lumbar or waist pillow is disposed between the cushion and the retractable backrest so that the lumbar pillow is attached to a lower side of the aluminum bending plate while it can rotate with a rotation of the retractable backrest.
In the preferred embodiment, the seat adjustment means is covered with a protective shell.
In yet anther embodiment, the multimedia structure comprises a multimedia bracket, which is disposed at one end of the headrest. The multimedia bracket is configured to be movable in a horizontal direction and is located above the headrest. In this embodiment, a display screen and the associated control panel are mounted on the multimedia bracket. Additionally, a fixing clip for mounting a mobile device is mounted on the multimedia bracket.
In an alternative embodiment, the multimedia structure may include a multimedia bracket and a first rotating bracket. In this embodiment, the lower end of the first rotating bracket is rotatably connected to the base through a rotating shaft, and the multimedia bracket is fixedly mounted on said first rotating bracket.
In yet another embodiment, the dental treatment machine may include a vertical pillar on its base where a second rotating bracket is disposed on a side wall of this vertical pillar, and a tool placing rack is provided on the second rotating bracket. In addition, an upper end of the vertical pillar is rotatably connected with a third rotating bracket, which is being provided with an LED cold light at its other end.
In accordance with a second aspect of the present invention, there is provided a dental treatment machine for children having a base, a cushion and a backrest, where the vertical distance between the base and the cushion, the angle between respective planes of the cushion and the backrest, as well as the horizontal distance between the cushion and the backrest are selectively adjustable according to a child's figure. Preferably, the vertical distance adjustment between the cushion and the base is about 350-730 mm, the angle adjustment between the backrest and the cushion is about 0°˜68°, and the distance adjustment between the backrest and the cushion is about 0˜50 mm.
By way of comparison with prior art, embodiments of the present invention provide the following advantages and effects as a result of the application of the above solutions. The seat adjustment means according to the embodiments of the present invention enables the cushion to move downwards to reach a lower position. Accordingly, an ultra-low seat is more acceptable to children, especially the very young ones, and therefore it is convenient for children to sit on. The backrest can rotate and move telescopically under the action of two motors, and is adjustable according to the body size of the children to meet the required treatments for patients with different sizes, ensuring the comfort of the patient. When children are being treated on the dental treatment machine of the present invention, the multimedia bracket which has a display to play videos can rotate over the children's head, and can also be used with a tablet to relieve children's tension.
The present disclosure is described in conjunction with the appended figures:
In the appended figures, similar components and/or features may have the same reference numeral, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. For ease of understanding, the main components are listed below with their corresponding reference numerals: 1: base, 2: adjustment bracket, 3: protective shell, 4: cushion, 5: backrest, 6: headrest, 7: multimedia bracket, 8: first rotating bracket, 9: tool placing rack, 10: second rotating bracket, 11: third rotating bracket, 12: angle adjustment motor, 13: lift motor, 14: telescopic adjustment motor, 15: gas spring, 16: transmission shaft, 17: push rod, 18: backboard, 19: aluminum bending plate, 20: slider, 21: sliding rail, 22: upper shell of aluminum bending plate, 23: lumbar or waist pillow, 24: lower shell of aluminum bending plate, 25: backrest lifting control board, 26: rear lower shell of adjustment bracket, 27: foot pedal or foot switch, 28: rear bottom shell, 29: front upper shell of adjustment bracket, 30: electrical outlet box, 31: large front shell, 32: main seat-frame, 34: arm-rest.
Referring first to the
The internal components of the seat adjustments means are best seen in
As can be seen from
An electrical outlet box 30 selectively supports power and data communication wires therein. The electrical outlet box 30 can be reliably assembled on the base 1 in front of dental treatment machine and includes a plurality of access ports for providing separate selective entry of power and data/communication wires into the box. A rear bottom shell 28 and a large front shell 31 are mounted on the base 1 for the sake of protection and visual appearances. Additionally, a foot pedal or foot switch 27 may be selectively set the seat lifting part for adjusting the vertical distance between the cushion 4 and the base 1 by movement of the foot pedal 27, which is mounted onto the rear bottom shell 28, best seen in
The backrest rotating part of the seat adjustment means according to the embodiments of the present invention may include the angle adjustment motor 12, the transmission shaft 16 and the aluminum bending plate 19. As can be seen from
On the other hand, the backboard 18 may be attached onto the outer surface of the slider 20 so that it can move up and down by following the slider 20's movement. After installation of the backboard 18, the backrest 5, which is provided with a sponge that comes in contact with the human body, is attached onto an outer surface of the backboard 18 (as shown in
According to a further preferred embodiment, a lumbar or waist pillow 23 may also be disposed between the cushion 4 and the retractable backrest 5 to provide support for children's lumbar section of the back. As can be seen from
In a more preferred embodiment, an outer portion of the seat adjustment means, which can be seen from the sides of the dental treatment machine, is covered by a protective shell 3 (
With reference to
In an alternative embodiment, the multimedia structure may only include the multimedia bracket 7 (not shown) which is disposed at one end of the headrest 6 and is movable in a horizontal direction above the headrest 6. In the preferred embodiment, a display screen and its associated control panel are mounted on the multimedia bracket 7. Additionally, a fixing clip for fixing a mobile device such as, for example, a mobile phone or a tablet lamp is also fixedly mounted on the multimedia bracket 7. This allows for relieving children's tension by playing video games or movies using the multimedia devices. In this way, when children are treated on the dental treatment machine, the multimedia bracket 7 having the display for playing videos can rotate over the children's head and can also be used with a tablet for more convenience.
Referring back to
In addition, it should be understood that, although the specification is described according to the embodiments of the present invention, not each embodiment includes only one independent technical solution, this description of the specification is only for the sake of clarity and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments that can be understood by those skilled in the art.
Number | Date | Country | Kind |
---|---|---|---|
201711012725.2 | Oct 2017 | CN | national |