JP3213153B2 - Dental clinic - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental clinic having a tray table provided on a back plate, and more particularly to a dental clinic having a dental table such as a handpiece and a syringe provided on the tray table.

[0002]

2. Description of the Related Art A typical prior art is, for example,
It is disclosed in JP-A-2-133090. In this prior art, in order to solve the problem that when the treatment table is pulled near the chest of the patient, the cutting tool and the hose portion covering the flexible drive shaft for driving the cutting tool obstruct the patient. With the treatment table positioned close to the patient's chest, the cutting tool and hose section can be moved from the front of the patient so that only the holder on which the cutting tool is latched can be pulled out from the treatment table placed in front of the patient. It is configured so that it can be retracted to the side.

[0003]

In such a prior art, a sewage tank / support is arranged in the vicinity of the side of the treatment chair corresponding to the seat chair and the back plate according to the present invention. The treatment table is provided at the free end of the arm whose base end is connected to the upper part of the sewage tank / support. In general, when performing treatment in a horizontal position by tilting the back plate of the treatment chair, the treatment is performed while the operator is sitting on the back of the patient's head, and at this time, the treatment table is placed on the shoulder or head of the patient. The arm must be pulled to the side, which brings the arm closer to the patient, giving the patient a feeling of oppression.

In order to solve this problem, the present applicant has disclosed in Japanese Utility Model Publication No. 60-97123 a dental treatment table provided with a treatment table on a back plate so as to be horizontal regardless of the tilting position of the back plate. Has been proposed. In this prior art, a unit table corresponding to the tray table of the present invention is provided with a hanger capable of locking various dental treatment instruments, but the instrument hung on the hanger and the instrument are provided. There is no disclosure of a configuration in which a tube having one end connected to the instrument can be easily detached and replaced with another type of instrument or tube according to the contents of treatment or examination.

Accordingly, it is an object of the present invention to easily replace, detach, and replace medical instruments such as various instruments hooked on the tray table and tubes connected thereto in the tray table provided on the back plate. It is to provide a dental clinic that can do it.

[0006]

SUMMARY OF THE INVENTION The present invention provides a seating chair on which a patient sits, a back plate which is tiltably connected to the seating chair, and a lifting drive for raising or lowering the sitting chair and the back plate. Means, a tilt drive means for tilting the back plate with respect to the chair, an arm having a base end rotatably connected to the back plate about a vertical axis, and a vertical axis at a free end of the arm. A tray table rotatably supported on the tray table, wherein the tray table is provided with a tube having one end connected to the dental care equipment and a connector to which the other end of the tube is detachably connected. The tray table is provided with a plate-shaped contact member suspended substantially in parallel at an interval on the lower surface thereof, and the contact member is provided with a holder capable of freely holding a dental care device. Provided between the contact member and the tray table. A switching element for detecting the displacement of the material, wherein when the switching element detects the displacement of the contact member, the lowering operation of the lifting drive means and / or the tilt drive means is stopped. is there.

[0007]

[0008]

According to the present invention, the back plate is connected to the chair so as to be tiltable, and the base end of the arm is connected to the back plate so as to be rotatable around the vertical axis. At the free end of the arm, a tray table is supported rotatably about a vertical axis.
A connector is provided on the tray table, and the connector is connected to the other end of a tube having one end connected to a dental care device. The other end of the tube is detachable from the connector.

In this manner, the dental care equipment and the tubes can be detachably mounted on the tray table provided on the back plate.

According to the present invention, a contact member is provided on the lower surface of the tray table in a substantially parallel manner with an interval, and the holder is provided on the contact member. A switching element is interposed between the contact member and the tray table, and the displacement of the contact member is detected by the switching element. When an obstruction such as an operator's leg abuts on the abutting member while the elevating / lowering driving unit and / or the tilting driving unit is moving down, or a dental care device provided on the abutting member When an obstacle comes into contact with the holder for hooking, the displacement of the contact member is detected by the switching element, and the lowering operation of the elevation drive means and / or the tilt drive means is stopped, thereby improving safety. Can be planned.

As described above, when the obstacle abuts on the abutting member or the holder, the lowering operation of the chair and / or the back plate is stopped because the tray table is arranged at least within the reach of the operator. When the tray table is close to the operator, it is preferable to keep the tray table in contact with the legs of the operator when the tray table is lowered. Because it must be.

[0012]

1 is a side view showing a dental clinic 1 according to one embodiment of the present invention, FIG. 2 is a plan view of the dental clinic 1,
FIG. 3 is a front view of the dental table 1 as viewed from the left side of FIG. The dental examination table 1 includes a chair 4 on which a patient 3 is seated, a back plate 5 that is connected to the chair 4 so as to be tiltable in the directions of the arrows A1 and A2, and an arrow. The double-acting hydraulic cylinder 6 for raising and lowering, which is a lifting drive means for raising or lowering in the direction of the mark B1 or lowering in the direction of the arrow B2, and the back plate 5 are tilted in the directions of the arrows A1 and A2 with respect to the chair 4. A tilting hydraulic cylinder 7 serving as a tilting drive means, an arm 10 having a base end 8 rotatably connected to the back plate 5 about a vertical axis 9 in the directions of arrows C1 and C2, and a free end of the arm 10 11 includes a tray table 14 that is rotatable about a vertical axis 13 in the D1 and D2 directions.

The tray table 14 has a contact member 2
The contact member 27 is provided with a plurality of holders 16 on which various instruments 15 as dental care equipment can be mounted so as to be freely locked. The tray table 14 includes a plurality of flexible tubes 17 each having one end connected to each instrument 15, and a plurality of connectors 18 each having the other end of each tube 17 detachably connected thereto. Provided.

As shown in FIGS. 1 to 3, when the patient 3 performs treatment in a horizontal position, the operator 19 is seated on a chair 20 at a position near 11 o'clock, ie, higher than the patient midline. The medical treatment is performed with the tray table 14 being pulled to the right of the patient and within a reachable range. When the treatment is performed in a sitting position with the back plate 5 standing up, the operator 19 needs to perform the treatment shown in FIG.
Is performed from a position near 9 o'clock indicated by the virtual line 21 of FIG. In this case, the tray table 14 is
The patient is pulled in the direction of arrow C <b> 2 in a range where the hand can be reached while being turned around in the direction of arrow D <b> 2, and treatment is performed using the instrument 15.

As described above, the operator 19 performs the treatment by moving the tray table 14 within a reachable range at both the position around 11 o'clock and the position near 9 o'clock. Does not exist and does not give pressure. Further, since the tray table 14 can be arranged behind the field of view of the patient 3 regardless of whether the treatment position of the patient 3 is the horizontal position or the sitting position, the instrument 15 mounted on the tray table 14 can be used. The patient 3 can be prevented from having a fear of seeing.

FIG. 4 is a partial perspective view showing a state in which the instrument 15 and the tube 17 are attached to the tray table 14. Note that reference numerals indicating a plurality of members are given only numerals when they are collectively referred to, and suffixes a, b, and c are added to the same numerals when each member is individually indicated. The plurality of (in this embodiment, three) instruments 15 are handpieces for cutting teeth or the like, for example, and include a long rod-shaped grip portion 23 and a head 24 provided at one longitudinal end of the grip portion 23. A cutting tool 25 called a bar or a point is detachably mounted on the head 24. Such handpieces include a high-speed cutting handpiece and a low-speed cutting handpiece. The handpiece shown in FIG. 4 is a contra-angle air turbine handpiece for high-speed cutting. In terms of structure, handpieces for low-speed cutting include handpieces for micromotors, electric engines, and air motors, each of which has a contra-angle type and a straight type. In addition to the contra-angle handpiece and the straight handpiece, mono-angle handpieces and right-angle handpieces are well known. The instrument 15 is not limited to the handpiece described above, and includes, for example, a vacuum syringe, a three-way syringe, a light probe, a scaler, and a saliva ejector.

The instruments 15 described above are mounted on the holders 16 respectively. Each holder 16
Has a U-shaped cross section open toward the upper side, and the holder 16c has a portion extending in the horizontal horizontal direction from the upper portion because the holder 16c is fixed to the contact member 27 with screws or the like. In such a holder 16, the instrument 15 has the head 24 on the left side and the cutting tool 25
Is placed face down.

The holder 16 will be described. 4, the holder 16a disposed on the leftmost side and the holder 16b disposed at the center are fixed to the mounting member 26 made of metal or synthetic resin at different positions in the longitudinal direction. The upper end of the attachment member 26 is fixed to a plate-like contact member 27 suspended below the tray table 14 with a space therebetween by screws or the like (not shown). The holder 16c arranged on the right side in FIG. 4 is fixed to the contact member 27 with screws or the like. As a metal forming the mounting member 26, a lightweight and tough aluminum alloy, or as a synthetic resin forming the mounting member 26, a polyacetal having heat resistance and chemical resistance is preferably used. When polyacetal is used, this enables autoclave sterilization. In addition, each holder 16
By forming a, 16b, and 16c from the same synthetic resin as the mounting member 26, autoclave sterilization can be performed. Further, each holder 16a, 16b, 16
b and the surface of the mounting member 26 may be subjected to antibacterial treatment.

FIG. 5 shows the tray table 1 of the socket 32.
It is sectional drawing which shows the attachment structure to 4. One ends of flexible tubes 17a, 17b, 17c are connected to the instruments 15a, 15b, 15c, respectively. Plugs 29a, 29b, and 29c are connected to the other ends of the tubes 17a, 17b, and 17c, respectively.
a, 32b, 32c are detachably connected respectively.
Each socket 18 has a plurality of screws 3 on the lower surface of the contact member 27.
A substantially U-shaped metal case 3 fixed by 0
1 is provided. In this case 31, each socket 32
Screw holes 33 for fixing the
Are formed, and the socket 32 is fixed to the case 31 with screws 34. Tubes 36 are individually connected to the sockets 32, and the tubes 36 are commonly inserted into rubber tubes (not shown) and connected to the back plate 5 along the arms 10. Each pair of plugs 29a, 29
b, 29c and the sockets 32a, 32b, 32c form a plurality of connectors 18a, 18b, 18c, respectively.

The contact member 27 is suspended by a plurality of dampers 38 in parallel with the lower surface of the tray table 14 at intervals. The damper 38 has a bottomed cylindrical casing 39, a compression coil spring 41 housed in the casing 39, and a piston rod 43 spring-biased by the compression coil spring 41. The casing 39 is fixed to the upper surface of the contact member 27 by screws 44. Piston rod 4
3 is fixed to the lower surface of the tray table 14 by screws 45.

An inverted L-shaped mounting member 46 is fixed to the lower surface of the tray table 14 by screws 47, and a micro switch 48 as a switching element is fixed to a lower end of the mounting member 46. The operation piece 49 of the micro switch 48 is in contact with the upper surface of the contact member 27, and the operator 19 operates the hood pedal 50 (see FIG. 1) to lower each of the hydraulic cylinders 6, 7 during operation. When, for example, the leg 51 of the operator 19 abuts on the abutting member 27, the abutting member 27 is displaced in a direction approaching the tray table 14, that is, upward in FIG. Press. This allows the microswitch 48
Changes the switching mode from on to off or from off to on, and this change causes the hydraulic cylinders 6, 7
Is stopped, so that the chair 4 and the back plate 5
Alternatively, the lowering operation of the chair 4 or the back plate 5 is stopped.

As described above, the chair 4 and / or the back plate 5
Is not limited to the case where the obstacle directly abuts on the abutting member 27, for example, when the obstacle abuts on the case 31 and the obstacle is caught on the tube 17. In such a case as well, the contact member 27 is indirectly pushed up, the switching mode of the microswitch 48 changes, and the lowering operation of the seat 4 and / or the back plate 5 can be stopped.

Each of the plugs 29 is provided with an operation lever 54 which can be angularly displaced in the directions of arrows E1 and E2 around the pin 53, and has one end 55 inclined in a direction away from the outer peripheral surface of the plug 29. By pressing in the direction E2, the other end 56 bent inward against the spring force of a torsion spring (not shown) is formed into an annular projection 57 formed on each socket 32.
The plug 29 can be easily removed from the socket 32 by releasing the plug 29 from the socket 32. By providing such a locking means 58 in each connector 18, it is possible to prevent the tube 17 from falling off during the operation of various instruments 15.

As another embodiment of the present invention, the plug 29 and the socket 32 may be removably connected by a cap nut mounted on the plug 29 or the socket 32 instead of the locking means 58. .

As described above, since the instrument 15 can be easily replaced with another instrument by the connector 18, wasted time required for replacement can be reduced, and treatment time can be shortened.

In this way, the tray table 14 and the instrument 15 can be arranged close to the operator without giving the patient a feeling of oppression, and the tray table 14 and the instrument 15 can be placed on the operator. When the chair 4 and / or the back plate 5 is lowered in a state where the tray is in contact with the operator and the tray table abuts on the legs of the operator, the chair 4 and / or the back plate 5 Since the descending operation is stopped, safety can be improved.

[0027]

According to the present invention, the tube connected to the dental care equipment is provided on the tray table provided on the backboard, so that the dental table can be placed close to the operator during the medical treatment. The medical treatment device can be easily grasped or returned, and the convenience can be improved. Further, since the tray table is provided with the connector, the dental medical equipment can be easily detached and replaced together with the tube.

Further, according to the present invention, when an obstacle comes in contact with the contact member while the chair or the backboard is descending, the descending operation is stopped, so that safety can be improved. it can. In particular, according to the present invention, since the contact member suspended below the tray table is provided with a holder for hanging the dental care device, even when an obstacle contacts the holder, The lowering operation can be stopped, and thus safety is ensured even when the holder comes into contact with an obstacle.

[Brief description of the drawings]

FIG. 1 is a side view showing a dental examination table 1 according to an embodiment of the present invention.

FIG. 2 is a plan view of the dental examination table 1. FIG.

FIG. 3 is a front view of the dental examination table 1 as viewed from the left in FIG.

FIG. 4 is a partial perspective view showing the vicinity of an instrument 15 in an enlarged manner.

FIG. 5 is a partially enlarged cross-sectional view illustrating a state where the connector 18 is attached to the tray table 14.

[Explanation of symbols]

 1 Dental Clinic 3 Patient 4 Chair 5 Backplate 6 Double-acting Hydraulic Cylinder for Elevating 7 Tilting Hydraulic Cylinder 8 Base End 9,13 Vertical Axis 10 Arm 13 Free End 14 Tray Table 15 Instruments 16,16a , 16b, 16c Holder 17, 17a, 17b, 17c Tube 18, 18a, 18b, 18c Connector 19 Surgeon 27 Contact member 29, 29a, 29b, 29c Plug 32, 32a, 32b, 32c Socket 38 Damper 48 Micro switch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-181155 (JP, A) JP-A-60-97123 (JP, U) JP-A-4-20328 (JP, U) JP-A-2- 20518 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61G 15/00-15/18

Claims (1)

(57) [Claims] 1. A chair on which a patient sits, a back plate which is tiltably connected to the chair, a lifting drive means for raising or lowering the chair and the back plate, and a back plate. Tilt drive means for tilting with respect to the chair; an arm having a base end rotatably connected to the back plate about a vertical axis; and a free end of the arm rotatably supported about the vertical axis. A tray table, wherein the tray table is provided with a tube to which one end is connected to a dental care device, and a connector to which the other end of the tube is detachably connected. A plate-shaped abutment member suspended substantially in parallel with an interval is provided on the lower surface of the abutment member. The abutment member is provided with a holder capable of hanging a dental care device, Detects the displacement of the contact member between the table The switching element is interposed, when the switching element detects the displacement of the abutting member, dental treatment table, characterized by stopping the downward movement of the elevating drive means and / or tilting drive means.