JP3063865U - Medical examination table - Google Patents

Abstract

(57) [Summary] [Problem] To keep a patient in a natural posture in a supine position, without pinching a finger, and by using a highly safe and simple tilting mechanism, the patient is moved from a sitting position to a supine position. Provide a medical examination table that can be smoothly transferred to Kind Code: A1 A medical examination table 10 includes a chair 5 for holding a patient in a sitting position (a) and a supine position (b), and a pedestal 6 for supporting the chair 5 so as to be able to move up and down. The chair part 5 comprises a back part 1 and a seat part 2 rotatably connected to each other.
In the case of the supine position (b), a tilting mechanism is provided so that the front of the seat 2 is lifted up. In this case, the tilting mechanism is generated between the seat 2 and the pedestal 6. A cover 2 b that covers the gap is provided on the seat 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a medical couch for holding a patient in a sitting position or a supine position for various diagnoses and treatments of medical treatment, particularly dental treatment.

[0002]

[Prior art]

 Medical examination tables are designed to hold patients in a comfortable posture that is suitable for diagnosis and treatment and that does not tire patients in diagnosis and treatment.Various types have been proposed to better achieve this purpose. I have.

A medical couch 50 shown in FIG. 5 is proposed in Japanese Patent Application Laid-Open No. 62-41659, in which a back portion 51, a seat portion 52, and a leg portion 53 are each provided with a first rotation fulcrum 57a. , The second pivot point 57b, and the seat portion 52 is pivotally connected to the pedestal portion 56 and the fourth pivot point 57d, and the link members 57e, 57f, 57g, 57h, By rotating a male screw 57m screw-engaged with a link member 57f of a link row consisting of 57i, 57j, 57k and 57l by a tilting motor 57n provided on a pedestal portion 56, a back portion 51 and a seat portion 52 are formed. The leg 53 can be tilted from the sitting position (a) to the supine position (b).

[0004] However, in the above structure, no consideration is given to avoiding a patient from pinching his hand or the like in a large gap generated between the seat 52 and the pedestal 56 in the supine position. Further, the number of link members is large, the structure is complicated, and the tilting of the seat 52 by the link members 57i causes the legs 53 to tilt indirectly, so that the load on the link members 57i is large, There was also a problem in terms of wear and durability.

A medical examination table 60 shown in FIG. 6 is proposed in Japanese Patent Application Laid-Open No. Hei 5-46451, and has a feature in that the foot rest 64 is tilted with respect to the tilt of the leg 63. In FIG. 6, only the seat portion 62 and the leg portion 63 are indicated by a solid line, the sitting position [0] is indicated by a solid line, and the supine position [2] and the intermediate position [1] between the supine position and the sitting position are indicated by a chain line. I have.

The medical examination table 60 includes the above-described seat 62, the leg 63, and the footrest 64, and the tilt mechanism 67 for tilting the leg 63 and the footrest 64 with respect to the seat 62. It is configured.

The leg portion 63 includes leg link arms 63 a and 63 b rotatably connected to pivot points 67 a and 67 h provided vertically below the seat portion 62 at a predetermined distance from each other. It comprises a link member 63c for connecting the other ends of the link arms 63a and 63b. The link member 63c has an L-shape. A link arm 63a is rotatably connected to the L-shaped intersection, and a link arm 63b is rotatably connected to one end. The other end side of the link member 63c supports the foot rest 63.

[0008] The foot rest 64 includes a foot rest 64a for receiving the patient's foot, a foot rest 64b supporting the foot rest 64a slidably and connected to the other side of the link member 63c. It is composed of

The tilting mechanism 67 includes the rotation fulcrums 67 a and 67 h, a long hole 67 b provided on the link arm 63 a side of the link between the leg link arm 63 a and the link member 63 c, and an intermediate portion between the leg link arm 63. A link protrusion 67c protruding from the link portion, a drive link member 67d rotatably connected to the link protrusion 67c, a slide cylinder 67f rotatably connected to the other end of the link member 67d by a fulcrum 67e. A slide shaft 67g, which is inserted into the slide cylinder 67f to slidably support the slide cylinder 67f, is provided on fulcrums 67i, 67j connecting the leg link arms 63a, 63b and the link member 63c, and on the leg link arm 63a. And a slot 67l provided in the footrest 64a so that the pin 67k is inserted. Have been.

In the medical examination table 60, with the above configuration, in the sitting position [0], the footrest 64 is bent at a predetermined angle to the leg 63, and as a result, the seat 6 It is convenient for the patient to rest on the foot, keeping it parallel to 2. On the other hand, in the supine position [2], the foot rest portion 64 is aligned with the leg portion 63, and as a result, the seat portion 62, the leg portion 63, and the foot rest portion 64 remain horizontal, and the foot of the patient in the supine position is maintained. Are able to maintain a more natural and comfortable attitude.

However, in the medical couch 60, tilting of the seat in the supine position is not considered at all. Further, in order to incline the foot rest 64 as described above, complicated members such as a long hole 67b provided in the leg link arm 63a and a long hole 67l provided in the foot rest 64a are required.

[0012]

[Problems to be solved by the invention]

 The present invention is intended to solve the above-mentioned problem, and has a highly safe and simple link mechanism without pinching a finger while keeping a patient in a natural posture in a supine position. Therefore, it is an object of the present invention to provide a medical examination table that can smoothly shift a patient from a sitting position to a supine position.

[0013]

[Means for Solving the Problems]

 The medical examination table according to claim 1 is a medical examination table comprising a chair portion for holding a patient in a sitting position and a supine position, and a pedestal portion for supporting the chair portion so as to be able to move up and down. The chair portion includes a back portion, a seat portion, and a leg portion that are rotatably connected to each other. In a supine position, the chair portion includes a tilting mechanism that allows the front of the seat portion to be lifted. A cover that covers a gap generated between the seat and the pedestal is provided on the seat.

[0014] The medical couch does not simply maintain the back, seat, and legs holding the patient in a straight line in the supine position, but provides a more natural and more comfortable supine position for the patient. A tilt mechanism is provided so that the front of the seat is lifted, that is, the leg joint is in a posture where natural bending occurs, and at that time, the seat is positioned between the seat and the pedestal. A cover is provided to cover the generated gap.

[0015] Therefore, the patient can maintain a comfortable supine position, and does not pinch a finger in the gap, which is high in safety. In other words, it provides more patient-oriented care.

According to a second aspect of the present invention, in the medical examination table according to the first aspect, the cover provided on the seat extends a skirt of a seat sheet constituting the seat in a direction of the seat. It is characterized by being constituted.

In this medical examination table, the gap between the seat in the supine position and the pedestal is covered by extending the skirt of the seat sheet. Therefore, there is no need to provide a separate cover, and cost can be reduced. Since the cover is integrally formed with the seat, the design is excellent.

In the first and second aspects of the present invention, the cover is provided on the seat portion side. Alternatively, the cover may be provided on the pedestal portion side.

According to a third aspect of the present invention, there is provided the medical examination table according to any one of the first and second aspects, wherein the tilting mechanism is provided on a back of the chair, and the tilt is tilted from a sitting position to a supine position. A second force point is provided eccentrically to the first force point of the back link arm to be moved by a predetermined amount, and the seat link member and the leg link member extend rotatably from the second force point, and the other end of the seat link member Is pivotally connected to one end of a tilt arm that rotates about a fulcrum provided on the pedestal, and the other end of the tilt arm connects the front of the seat of the chair to the pedestal. And the other end of the leg link member is rotatably connected to a leg link arm provided on the leg of the chair, which tilts the leg from a sitting position to a supine position. The first force is applied to the seat by the telescopic drive means. By rotating about the pivot point between the back and the center, the back is tilted from the sitting position to the supine position, the legs are tilted from the sitting position to the supine position, and the seat is moved relative to the sitting position. In the supine position, the front of the seat is raised with respect to the pedestal.

In this medical examination table, the tilting mechanism is specifically defined, and the main members constituting the mechanism are a back link arm, a seat link member, and a leg link as compared with the conventional one. It has a simple configuration consisting only of members, a tilt arm, leg link arms, and telescopic drive means. Also, by appropriately adjusting the predetermined amount of eccentricity between the first force point and the second force point provided on the back link arm, the ratio of the tilting of the seat and the leg to the tilting of the back can be easily adjusted. .

According to a fourth aspect of the present invention, there is provided a medical examination table according to the third aspect, wherein the upper surface of the seat portion of the chair has a gradient such that, in a sitting position, the upper surface is inclined forward by a predetermined angle from a horizontal plane. The tilting mechanism is characterized in that the back portion of the chair portion is further tilted forward by the predetermined angle from the sitting position.

In this medical examination table, the upper surface of the seat is tilted forward by a predetermined angle, and the tilting mechanism is tilted forward from the conventional sitting position and further tilted forward by the predetermined angle. After passing through the sitting position, the patient is tilted to the conventional supine position, so that the so-called gargle sitting position can be realized in the forwardly inclined position, and the burden on the foot when the patient stands up can be reduced.

In this way, the tilt angle of the tilt mechanism is slightly increased, and the seat surface of the seat is tilted forward, so that a more appropriate mechanism for gargleing the patient without providing an extra mechanism is provided. A gargle sitting position can be realized. In addition, when the patient stands up, by tilting the seat forward in this state, the waist becomes higher than the knee, so that the patient can stand up with less burden on the feet.

[0024]

[Embodiment of the invention]

 Hereinafter, embodiments of the medical examination table according to the present invention will be described with reference to the drawings.

FIG. 1 shows an example of the medical examination table of the present invention, in which (a) is an external side view of the sitting position, and (b) is an external side view of the supine position.

The medical examination table 10 includes a chair portion 5 including a back portion 1, a seat portion 2, a leg portion 3, and a foot rest portion 4, a pedestal portion 6 for supporting the chair portion 5 so as to be able to move up and down. It has. Above the back 1, a head support 1 a is provided so as to be able to move in and out, and the height can be adjusted. The seat 2 includes a seat 2 a having a hem 2 b and an armrest 21.

The back 1 and the seat 2, the seat 2 and the leg 3, and the leg 3 and the footrest 4 are rotatably connected to each other at a pivot point, which will be described later, and will be described later. A tilting mechanism is built-in, and the tilting mechanism tilts from the sitting position (a) to the supine position (b) to hold the patient.

The pedestal section 6 is installed on the floor, and supports the chair section 5 so as to be able to move up and down and to rotate horizontally with respect to the floor surface.

The medical examination table 10 is characterized in that a seat 2 a of the seat 2 is further provided with a skirt 2 b extending in the direction of the seat 6. As shown in FIG. 1 (b), even when the front of the seat 2 is lifted up in the supine position by the tilting mechanism, the hem 2b is provided with a gap between the seat 2 and the pedestal 6. To prevent it from occurring.

Therefore, the patient or the like does not pinch a finger in the gap generated by the patient while achieving a comfortable supine position.

The seat 2a and the skirt 2b may be connected and integrated, or may be separate. Moreover, you may make it provide in the pedestal part 6 instead of the seat part 2 side.

FIGS. 2A and 2B conceptually illustrate the tilting mechanism of the medical examination table shown in FIG. 1. FIG. 2A is a mechanical relationship diagram showing a sitting position, and FIG. 2B is a mechanism showing a supine position. FIG. Therefore, the same reference numerals are given to the parts already described, and the repeated description will be omitted. In the following description, the sitting position [a] and the supine position [b] will be indicated by using the partial diagram symbols a and b as necessary.

The tilting mechanism 7 provided in the medical examination table 10 includes a first pivot 7 a between the back 1 and the seat 2 of the chair 5, and a second pivot 7 a between the seat 2 and the leg 3. A pivot 7b, a third pivot 7c between the leg 3 and the footrest 4, a fourth pivot 7d between the pedestal 6 and the seat 2, and a back 1 are provided. A back link arm 7e that tilts from a sitting position [a] to a supine position [b] about one rotation fulcrum 7a, a first force point 7f provided on the back link arm 7e, and a predetermined amount of eccentricity with respect to the first force point 7f. It has a second force point 7g provided.

Further, the tilting mechanism 7 rotates around a seat link member 7 h and a leg link member 7 i that are rotatably extended from the second force point 7 g and a fulcrum 7 j provided on the pedestal 6. The tilt arm 7k is provided on the leg 3 of the chair 5, and the leg 3 is tilted from the sitting position [a] to the supine position [b]. A telescopic driving means 7m provided on the back link arm 7e and acting on the first force point 7f; a foot rest provided between the seat 2 and the leg 3 of the chair 5; A link member 7n is provided.

The back portion 1 includes a back plate 1b serving as a structure supporting the entire back portion, and a connecting member 1c for fixedly connecting the back plate 1b and the first fulcrum 7a. The back plate 1b is fixedly extended.

The seat portion 2 is mounted on a seat plate 2 c rotatably connected to a pedestal plate 6 a fixedly mounted on the pedestal portion 6 by a fourth rotation fulcrum 7 d, and is provided at a lower front part of the seat plate 2 c. A link block 2d is provided, and a second pivot 7b between the seat 2 and the leg 3 is provided at the front end of the seat plate 2c. The first rotation fulcrum 7a is provided on a support plate 6b erected on the pedestal plate 6a of the pedestal portion 6.

A fulcrum 7j supporting the tilt arm 7k is provided below the pedestal plate 6a of the pedestal portion 6, and the other end of the seat link member 7h is rotatable at one end of the tilt arm 7k. When the tilt arm 7k is rotated about the fulcrum 7j by the seat link member 7h, the other end of the tilt arm 7k protrudes and retracts above the pedestal plate 6a, and is rotated by the pedestal plate 6a. By pushing up while sliding the back surface of the movably connected seat plate 2c, the front of the seat plate 2c is lifted. A rotating member (not shown) formed of a cam follower or the like is installed at the other end of the tilt arm 7k, and when the other end pushes up the back surface of the seat plate 2c, the rotating member comes into rolling contact. You may make it push up while doing.

The other end of the leg link member 7 i is rotatably connected to the leg link arm 71 of the leg 3, and the seat link 2 c is tilted with the rotation of the back link arm 7 e. Then, the leg link arm 71 is rotated to tilt the leg 3 with respect to the seat 2. The expansion / contraction drive unit 7m is provided at a lower portion of the pedestal plate 6a of the pedestal portion 6 at the lower end.

The foot rest link member 7 n is rotatably connected between the link block 2 d provided on the seat plate 2 c of the seat 2 and the foot rest 4. The connection fulcrum between the footrest link member 7n and the link block 2d is a rotation fulcrum 7na, and the connection fulcrum between the footrest link member 7n and the footrest 4 is a rotation fulcrum 7nb.

As can be understood from the above configuration, the first pivot 7 a between the back 1 and the seat 2 of the chair 5, the fourth pivot 7 d between the pedestal 6 and the seat 2, the pedestal The three fulcrums 7a, 7d and 7j of the fulcrum 7j provided on the part 6 are fixed fulcrums that are fixed and do not move even when the tilting mechanism 7 is operated from the sitting position [a] to the supine position [b]. In the drawing, these fulcrums 7a, 7d, 7j are shown in black.

In the tilting mechanism 7 having such a configuration, the first force point 7f of the back link arm 7e is rotated about the first rotation fulcrum 7a by the expansion / contraction driving means 7m, so that the back 1 is seated [a ] To the supine position [b], the leg 3 is tilted from the sitting position [a] to the supine position [b], and the seat portion 2 is further inclined with respect to the sitting position [a] [b]. Thus, the front of the seat [2] can be raised with respect to the pedestal 6.

The main components of the tilting mechanism 7 are only the back link arm 7e, the seat link member 7h, the leg link member 7i, the tilt arm 7k, the leg link arm 71, and the expansion / contraction drive means 7m. And has a simple structure. Further, the position where the tilt arm 7k contacts the seat plate 2c is a position away from the pivot 7d, and the portion including the seat 2, the leg 3, and the footrest 4 is made smaller. It can be lifted by force and has little wear.

By adjusting the predetermined amount of eccentricity between the first force point 7f and the second force point 7g, the rotation of the seat link member 7h and the rotation of the leg link member 7i with respect to the rotation of the back link arm 7e can be achieved. The amount of movement can be adjusted, whereby the amount of tilt of the seat 2 and the leg 3 with respect to the amount of tilt of the back 1 can be adjusted.

The foot rest link member 7 n is for tilting the foot rest 4 with respect to the leg 3. The distance between the second turning fulcrum 7 b and the turning fulcrum 7 na is set to the third position. By increasing the distance between the rotation fulcrum 7c and the rotation fulcrum 7nb, four rotations of the third rotation fulcrum 7c, the second rotation fulcrum 7b, the rotation fulcrum 7na, and the rotation fulcrum 7nb are performed. A trapezoidal link composed of fulcrums is formed, whereby the amount of tilt of the footrest 4 with respect to the leg 3 is adjusted with respect to the amount of tilt of the leg 3 with respect to the seat 2.

Therefore, as shown in the figure, in the sitting position [a], the footrest 4 is substantially perpendicular to the leg 3, whereas in the supine position [b], the footrest 4 is at right angles. Numeral 4 is substantially straight with respect to the leg 3, so that the patient's natural posture can be maintained. The link mechanism of such a footrest is much simpler than the link mechanism of the conventional medical clinic described with reference to FIG. 6, and it is also skillfully combined with the tilting of the seat 2. ing.

The seat 2a of the seat 2 described above is covered with the seat 2a, and the back plate 1b of the back 1 is covered with a similar seat cover. Of course, the seat 2 and the like are configured.

FIG. 3 is an external side view showing the gargle position in an example of the medical examination table of the present invention.

The tilting mechanism of the medical couch 10 is the same as that described with reference to FIG. 2, except that the upper surface of the seat portion sheet 2a is in a normal sitting position and a point indicating the conventional sitting position. This is a point configured so as to be further inclined forward by a predetermined angle D from the chain line. In response to this, the tilting mechanism also tilts the back 1 forward by a similar predetermined angle D with respect to the dashed line indicating the conventional sitting position.

By doing so, as shown in the figure, it is easy to gargle using a spitton (not shown) provided near the medical examination table 10, and an extra gargle sitting position is provided. This can be realized without providing a mechanism.

FIG. 4 is an external perspective view showing an example of the dental care apparatus provided with the medical examination table of the present invention.

This medical treatment apparatus uses a medical examination table 10 for dentistry, and includes an operator's cabinet 20 and an auxiliary cabinet 30.

The medical examination table 10 is provided with a foot controller 6e, and can move the chair unit 5 up and down and rotate.

The operator's cabinet 20 includes a top plate 21 on which the operator places instruments and medical charts necessary for dental treatment, a screen 22 for preventing other patients from seeing the patient, a surgical light, and the like. Holding the lighting equipment 23, the mirror 24 provided for the patient to see the oral cavity, the spittoon 25 for gargle, and medical equipment such as a handpiece, and the top plate of the operator cabinet 20. The medical unit 26 is provided at the lower part 21 so as to be able to be taken in and out, and a display device 27 for displaying images and the like is provided. A CCD camera 24a is built in the lower center of the mirror 24, and the image of the patient by the camera 24a can be displayed on the display device 27.

The auxiliary cabinet 30 is mainly provided with medical equipment and the like used by an assistant. Like the operator cabinet 20, the auxiliary cabinet 30 holds a top plate 31, a sink 32, a vacuum syringe, and the like. 34 is provided through a free arm, and has an auxiliary medical unit 33 which can be taken in and out of the auxiliary cabinet 30 by itself.

By combining this dental examination device with the medical examination table 10, it is possible to conduct an interview using the mirror 24, which is not possible in the past, and also to perform a so-called 9 o'clock examination position. It has become possible to realize patient-oriented medical care.

In the above, only one used for dental care has been described as an example. However, the present invention is not limited to this, and the medical couch of the present invention can be used in obstetrics, gynecology, ophthalmology, urology, etc. It can be used.

[0057]

[Effect of the invention]

 According to the medical couch according to claim 1, in the supine position, the back, the seat, and the legs holding the patient do not simply maintain a straight horizontal, but are more natural for the patient. A tilting mechanism is provided so that the front of the seat is lifted so as to provide a more comfortable supine posture, that is, a posture in which the leg joint is naturally bent. A cover is provided to cover the gap created between the camera and the pedestal, so that the patient can maintain a comfortable supine position, and the fingers are not pinched by the gap, so that the safety is high. In other words, more patient-oriented medical care can be realized.

According to the medical examination table according to the second aspect, in addition to the effect of the first aspect, the gap between the seat portion in the supine position and the pedestal portion is covered by extending the skirt portion of the seat portion sheet. As a result, there is no need to provide a separate cover, cost can be reduced, and the design is excellent because it is integrated with the seat.

According to the medical examination table according to the third aspect, in addition to the effect of any one of the first and second aspects, the tilting mechanism is specifically defined. It has a simple configuration in which the main members constituting the above are only the back link arm, the seat link member, the leg link member, the tilt arm, the leg link arm, and the telescopic drive means. In addition, by appropriately adjusting the predetermined amount of eccentricity between the first force point and the second force point provided on the back link arm, the ratio of the tilting of the seat and the leg to the tilting of the back can be easily adjusted. .

According to the medical examination table according to the fourth aspect, in addition to the effect of the third aspect, the upper surface of the seat is tilted forward by a predetermined angle as compared with the conventional case, and the tilting mechanism is shifted from the conventional seating position. Furthermore, since the patient is tilted forward from the position tilted forward by the predetermined angle to the conventional supine position and then to the conventional supine position, the tilting angle of the tilting mechanism is slightly increased, and the seating surface of the seat portion is increased. By simply leaning forward, it is possible to realize a more appropriate gargle sitting position for the patient to gargle without separately providing an extra mechanism, and to reduce the burden on the foot when the patient stands up.

[Brief description of the drawings]

FIG. 1 shows an example of a medical examination table of the present invention;
(A) is an external side view of the sitting position, and (b) is an external side view of the supine position.

FIGS. 2A and 2B conceptually illustrate a tilting mechanism of the medical examination table of FIG. 1; FIG. 2A is a mechanism relation diagram showing a sitting position;
(B) is a mechanical relation diagram showing the supine position

FIG. 3 is an external side view showing a gargle sitting position in an example of the medical examination table of the present invention.

FIG. 4 is an external perspective view showing an example of a dental care apparatus provided with the medical examination table of the present invention.

FIG. 5 shows an example of a conventional medical table.
(A) is a mechanism relation diagram of the sitting position, and (b) is a mechanism relation diagram of the supine position.

FIG. 6 is a mechanical relationship diagram showing a sitting position and a supine position of another example of a conventional medical examination table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Back part 2 Seat part 2a Seat sheet 2b Hem part (cover) 3 Leg part 4 Foot rest part 5 Chair part 6 Pedestal part 7 Tilt mechanism 7a 1st rotation fulcrum 7b 2nd rotation fulcrum 7c 3rd rotation fulcrum 7d 4th rotation fulcrum 7e back link arm 7f first force point 7g second force point 7h seat link member 7i leg link member 7j fulcrum 7k tilt arm 7l leg link arm 7m telescopic drive means 10 medical examination table D predetermined angle 	

Claims (4)

[Utility model registration claims] A chair for holding a patient in a sitting position or a supine position;
A medical examination table configured with a pedestal portion that supports the chair portion so as to be able to move up and down, wherein the chair portion includes a back portion, a seat portion, and a leg portion that are rotatably connected to each other, In the supine position, a tilting mechanism is provided so that the front of the seat can be lifted. At this time, a cover that covers a gap generated between the seat and the pedestal is provided on the seat. A medical examination table characterized by the fact that: 2. The seat according to claim 1, wherein the cover provided on the seat is formed by extending a skirt of a seat sheet constituting the seat in the direction of the pedestal. Medical examination table. 3. The chair according to claim 1, wherein the tilting mechanism is provided on a back of the chair, and is eccentric by a predetermined amount to a first force point of a back link arm for tilting the back from a sitting position to a supine position. To provide a second force point,
The seat link member and the leg link member extend so as to be rotatable from a point of force, and the other end of the seat link member is rotated to one end of a tilt arm that rotates about a fulcrum provided on the base. And the other end of the tilt arm raises the front of the seat of the chair with respect to the pedestal. The other end of the leg link member is provided on the leg of the chair. The leg is pivotally connected to a leg link arm for tilting the leg from a sitting position to a supine position. The first force point is extended and retracted by a telescopic drive means around a pivot point between the seat and the back. By rotating, the back part is tilted from the sitting position to the supine position, and the leg portion is tilted from the sitting position to the supine position. Is configured to lift the pedestal. Medical treatment table, characterized in that is. 4. The chair according to claim 3, wherein an upper surface of the seat portion of the chair portion is provided with a gradient such that, in a sitting position, the upper surface is inclined forward by a predetermined angle from a horizontal plane.
A medical examination table, wherein the tilt mechanism tilts the back of the chair further forward than the sitting position by the predetermined angle.