JP5294478B2 - Dental clinic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental treatment chair, in which an instrument holder can be easily and correctly disposed at a correct position near the oral cavity of a patient even when its headrest or backrest seat has the expandable function. <P>SOLUTION: The dental treatment chair A includes a seat 2, the backrest seat 3 continuously provided at one end of the seat 2 in a reclinable way, the headrest 4 continuously provided at the upper end of the backrest seat 3, and the instrument holder 5 held on a shoulder part of the backrest seat 3. The headrest 4 is expandable in a direction along the continuous direction with the backrest seat 3 by means of an expansion mechanism 9. The instrument holer 5 comprises a holder body 5a, and a rod member 5b for supporting the holder body 5a, and is expandable in a direction along the expandable direction of the headrest 4 by means of an expansion mechanism 10. Expansion actions of the expansion mechanism 9 of the headrest 4 and the expansion mechanism 10 of the instrument holder 5 are correlated with each other. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a dental examination table, and more particularly to a dental examination table provided with an instrument holder for holding various instruments used by an operator (doctor, assistant) during dental treatment. .

  The dental examination table is mainly composed of a seat sheet, a back plate sheet that is tiltably connected to one end portion of the seat sheet, and a headrest that is tiltably connected to an upper end portion of the back plate sheet. Prepare as. In such dental treatment using a dental examination table, an operator is positioned at an appropriate position around the affected part (oral cavity) of a patient who is supine on the examination table, and various instruments held by the instrument holder are used. Pick up the instrument according to the medical treatment mode and perform dental treatment. The instrument holder is provided on a tray table that can be moved to the side of the medical table, a shoulder or side of the back plate sheet, or a spit device installed on the side of the medical table. ing. Instruments are frequently used in dental practice, so the instrument holder should be in a position where it can be easily picked up and stored from the standpoint of ease of use for the surgeon and efficiency of medical care. On the other hand, when the instrument is not used, it is desirable to be in a position that does not interfere with medical care. Patent Documents 1 to 4 disclose examples of a dental examination table provided with an instrument holder so that the position of the instrument holder can be moved.

Japanese Utility Model Publication No. 51-138995 Japanese Utility Model Publication No. 56-1135626 Japanese Utility Model Publication No. 61-6911 Japanese Utility Model Publication No. 62-17072

  Recently, in addition to a mechanism that can adjust the vertical position of the examination table, a dental examination table has also been developed and put into practical use in which the headrest can be expanded and contracted with respect to the back plate sheet, or the back plate sheet can be expanded and contracted with respect to the seat sheet. It came to be. In such a dental clinic, when the patient is seated, the headrest and back plate seat width and seat seat height can be adjusted according to the patient's physique (height, seat height, body thickness). Therefore, the patient's supine posture on the medical table can be easily adapted to the individual medical treatment style. However, depending on the manner in which the instrument holder is provided, when such position adjustment is performed, the distance between the instrument holder and the affected part (patient oral cavity) on the headrest changes from the initial state (approach or separation). ). When the distance between the instrument holder and the headrest changes in this way, the surgeon instruments the instrument even though the relative positional relationship between the surgeon and the affected area is properly adjusted as described above. It may be difficult to pick up from the holder or to be stored in the instrument holder. For this reason, it is necessary to adjust the position of the instrument holder again, and it has been undeniable that the troublesomeness still remains. If the relative positional relationship between the instrument holder and the headrest is not appropriate, parts of the patient's body, such as the patient's hair and shoulders that protrude from the backboard sheet, may interfere with the pick-up or storage of the instrument. When an operator tries to pick up or store an instrument, an unnatural posture is not only burdened on the operator itself but may also make the patient uncomfortable. This also impairs the smoothness and comfort of medical care.

  In the case of the dental examination table disclosed in Patent Document 1, the instrument holder can be transferred between the side portion of the headrest and the side portion of the spit device. However, since the headrest and the backboard sheet do not have an expansion / contraction function, it is not possible to make adjustments according to the patient's physique. Further, in the case of the dental examination table disclosed in Patent Document 2, the instrument holder is slidably held along the side of the back plate sheet, so that the position of the instrument holder can be adjusted. . However, even if an expansion / contraction function is added to the headrest and backplate sheet of this dental clinic, it is necessary to adjust the position of the instrument holder after adjusting the headrest and backplate sheet according to the patient's physique. There is. Further, Patent Document 3 discloses a dental examination table in which an instrument holder is provided on a spit-on device that can move back and forth along the side of the examination table and that can rotate around a vertical axis. This patent document intends to secure a gargle position, a patient sitting space, an assistant instrument position, an assistant space, an arrangement space for a measuring instrument, etc. Even if an expansion / contraction function is added to the headrest and back plate sheet of the medical table, it is necessary to adjust the position of the instrument holder after adjusting the head rest and back plate according to the patient's physique. Patent Document 4 discloses a dental examination table in which an instrument holder for holding a vacuum syringe or the like is provided in a spit-on device provided movably along the side of the examination table. In this patent document, the reason why the Spitton device can be moved along the side of the medical table is to prevent a problem when the patient gets on and off the medical table from the Spitton device side. The holder moves with the Spitton device, but is not moved to match the convenience of the surgeon. In addition, even if the headrest and back plate sheet of this dental clinic table are extended and retracted, it is necessary to adjust the position of the instrument holder after adjusting the head rest and back plate according to the patient's physique. This is the same as above.

  The present invention has been made in view of the above, and even when the headrest and the back plate sheet have a telescopic function, the instrument holder can be easily and accurately arranged at an appropriate position in the vicinity of the oral cavity of the patient. The purpose is to provide a possible dental clinic.

  A dental examination table according to a first invention includes a seat sheet, a back plate sheet that is connected to one end portion of the seat sheet so as to be tiltable, a headrest that is connected to an upper end portion of the back plate sheet, It is a dental examination table provided with an instrument holder held on the shoulder of the back plate sheet, and the headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion and contraction mechanism. The instrument holder includes a holder main body and a flange member that supports the holder main body, and is capable of expansion and contraction in a direction along the expansion and contraction direction of the headrest by an expansion and contraction mechanism. It is characterized in that the respective expansion and contraction operations of the mechanism and the expansion and contraction mechanism of the instrument holder are associated with each other.

  The dental examination table according to the second and third inventions is a dental examination table in which the instrument holder is held on the base frame so as to extend in the vicinity of the shoulder portion of the back plate sheet, unlike the first invention. In the second invention, the headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion and contraction mechanism, and the instrument holder includes a holder main body and the holder main body. The headrest can be expanded and contracted in the direction along the direction of expansion and contraction of the headrest, and the expansion and contraction of the headrest and the extension mechanism of the instrument holder are mutually expanded and contracted. It is comprised so that it may relate to. According to a third aspect of the present invention, the back plate seat can be expanded and contracted in a direction along the connecting direction with the seat by an expansion / contraction mechanism, and the instrument holder includes a holder main body and the holder The back plate sheet can be expanded and contracted in a direction along the expansion / contraction direction of the back plate sheet by the expansion / contraction mechanism, and the back plate sheet expansion mechanism and the instrument holder expansion / contraction mechanism respectively. It is characterized in that the expansion and contraction operations of the two are linked to each other.

  In the dental examination table according to a third aspect of the present invention, the headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion / contraction mechanism, and the headrest expansion / contraction mechanism and the instrument holder You may comprise so that each expansion-contraction operation | movement of this expansion-contraction mechanism may mutually link.

  In the dental examination table of the present invention, the mechanism in which the expansion / contraction operation of the headrest expansion / contraction mechanism and the expansion / contraction mechanism of the instrument holder are associated with each other, or the expansion / contraction mechanism of the back plate sheet and the expansion / contraction mechanism of the instrument holder, An interlocking mechanism is used as the mechanism that links the movements, so that the expansion and contraction movements of the headrest and instrument holder are linked to each other, or the expansion and contraction movements of the backboard seat and instrument holder are linked. You may comprise so that it may be made.

  In the dental examination table according to the first to third inventions, a storage means for storing relative position information with respect to a preset headrest when the instrument holder is used, and an extension mechanism of the instrument holder. A control unit for controlling the operation, and the control unit reads the position information from the storage means when the instrument holder is positioned at a predetermined use position by using the expansion / contraction mechanism, and the control unit reads the position information based on the position information. You may comprise so that operation | movement of the expansion-contraction mechanism of a instrument holder may be controlled.

  Further, in the dental examination table according to the first to third inventions, storage means for storing preset relative position information with respect to the headrest when the instrument holder is used, and automatic attitude control of the examination table An operation means; and a control section for controlling the operation of the extension / contraction mechanism of the instrument holder and controlling the posture of the medical table based on the automatic posture control operation means. The control section controls the automatic posture control operation means. The instrument holder controls the posture of the medical table based on the operation command, and simultaneously reads the position information from the storage means, and positions the instrument holder at a predetermined use position based on the position information. You may comprise so that operation | movement of the expansion-contraction mechanism of this may be controlled.

  Further, in the dental examination table according to the present invention, the expansion / contraction mechanism of the instrument holder may include means for invalidating the association with another expansion / contraction mechanism.

  Furthermore, in the dental examination table according to the present invention, a holder main body portion of the instrument holder is detachably attached to a distal end portion of the collar member, and the holder main body portion can be detachably attached to another part of the medical treatment table. An auxiliary mounting portion that can be mounted may be provided.

  According to the dental examination table according to the first invention, the back plate is connected to the seat seat so as to be tiltable, and the headrest is connected to the upper end of the back plate. The medical treatment of supine with the seat down and the patient's head resting on the headrest or the sitting posture with the back plate seat upright can be appropriately performed according to the medical treatment mode. In addition, since the instrument holder is held on the shoulder of the back plate sheet, the surgeon can perform the instrument pickup and storage operation in the instrument holder in the vicinity of the patient's oral cavity, The operation burden during pick-up and storage is reduced, and the smoothness of medical work is achieved. And since the headrest can be expanded and contracted in the direction along the connecting direction with the back plate sheet by the expansion and contraction mechanism, the head of the patient is stably held on the headrest according to the physique of the patient. Therefore, it is possible to provide accurate medical care, and patients can receive medical care without annoyance. In addition, the instrument holder can be expanded and contracted in the direction along the direction of expansion and contraction of the headrest by the expansion and contraction mechanism, and the expansion and contraction operations of the headrest expansion and contraction mechanism and the instrument holder expansion and contraction mechanism are mutually linked. Therefore, when the headrest is expanded and contracted and the headrest is adjusted to the proper position according to the patient's physique, the instrument holder also has its expansion and contraction mechanism to provide the proper relative positional relationship with the headrest. The maintained position adjustment is made.

  According to the dental examination table according to the second and third inventions, as in the first invention, the supine treatment in which the back plate sheet is tilted and the patient's head is placed on the headrest, or the sitting treatment in which the back plate sheet is erected. Can be appropriately implemented according to the medical treatment mode. In addition, since the instrument holder is held on the base frame so as to reach the vicinity of the shoulder portion of the back plate sheet, the surgeon performs the instrument pick-up and storage operation with the instrument holder. Thus, the burden of operation during pick-up and storage can be reduced, and the smoothness of medical work can be achieved. And in 2nd invention, since the headrest can be expanded-contracted in the direction along the connection direction with a backplate sheet | seat by the expansion-contraction mechanism, according to a patient's physique, a patient's head is attached. It can be stably held on the headrest, so that accurate medical care can be performed, and the patient can receive medical care without annoyance. In addition, the instrument holder can be expanded and contracted in the direction along the direction of expansion and contraction of the headrest by the expansion and contraction mechanism, and the expansion and contraction operations of the headrest expansion and contraction mechanism and the instrument holder expansion and contraction mechanism are associated with each other. Because it is configured, when the headrest is expanded and contracted and the headrest is adjusted to the proper position according to the patient's physique, the instrument holder also has its expansion and contraction mechanism to maintain the proper relative positional relationship with the headrest Position adjustment is made.

  In the third invention, the back plate seat can be expanded and contracted in the direction along the connecting direction with the seat seat by the expansion and contraction mechanism, so that the patient can stably move according to his / her physique. Therefore, the upper body can be leaned on the back plate sheet, and the head is naturally stably held by the headrest. Accordingly, accurate medical care can be performed, and the patient can receive medical care without annoyance. In addition, the instrument holder can be expanded and contracted in the direction along the expansion / contraction direction of the back plate sheet by the expansion / contraction mechanism, and the expansion / contraction operation of the expansion mechanism of the back plate sheet and the expansion / contraction mechanism of the instrument holder respectively. Since the back plate is stretched and retracted, and the back plate is adjusted to the proper position according to the patient's physique, the instrument holder also has its expansion and contraction mechanism. Position adjustment is performed while maintaining an appropriate relative positional relationship with the headrest held by the plate sheet. In this case, the headrest can also be expanded and contracted in the direction along the connecting direction with the back plate seat by the expansion / contraction mechanism, and each expansion / contraction operation of the expansion / contraction mechanism of the headrest and the expansion / contraction mechanism of the instrument holder is possible. If it is comprised so that it may mutually link, if either a backplate sheet | seat or a headrest is expanded-contracted, an instrument holder will also expand-contract in connection with it. Further, if both are expanded and contracted, the instrument holder is also expanded and contracted in association with the combined expansion and contraction operation of both expansion and contraction mechanisms, so that the headrest and the instrument holder can be more accurately positioned relative to each other.

  In the present invention, a mechanism in which the expansion / contraction operations of the headrest expansion / contraction mechanism and the instrument holder expansion / contraction mechanism are associated with each other, or the back plate seat expansion / contraction mechanism and the instrument holder expansion / contraction mechanism are in association with each other. If an interlocking mechanism is used as the mechanism, the instrument holder expands and contracts in conjunction with the expansion and contraction of the headrest or back plate sheet, and the expected headrest and instrument holder according to the patient's physique. The relative positional relationship is set easily and accurately. In addition, as the interlocking mechanism, a simple mechanical or electrical mechanism can be used, whereby the dental examination table of the present invention can be provided without significant cost increase.

  The dental examination table according to the present invention further includes the storage means and the control unit, and the control unit uses the expansion / contraction mechanism to position the instrument holder at a predetermined use position when the headrest is stored in the storage unit. If the position information of the instrument holder is read out and the operation of the extension mechanism of the instrument holder is controlled based on this position information, the headrest or the back plate sheet or both can be extended or contracted according to the patient's physique. Accordingly, the headrest and the instrument holder are accurately positioned at the intended relative positions by the operation control based on the position information. Therefore, if the relative position information between the headrest and the instrument holder is stored in advance in the storage means according to the operator's unique usability, the headrest or back plate seat can be expanded and contracted according to the patient's physique. In connection with the above, the headrest and the instrument holder are automatically set in a relative positional relationship desired by the operator. By such a function, the preparation work at the start of medical treatment is efficiently and accurately performed.

  The dental examination table of the present invention further includes a storage unit similar to the above, the automatic posture control operation unit, and a control unit including a function for controlling the posture of the treatment table in addition to the above, and the control unit includes an automatic posture. Based on the control operation command of the control operation means, the posture of the medical table is controlled. In parallel with this, the position information is read from the storage means, and the instrument holder is positioned at a predetermined use position based on the position information. If it is configured to control the operation of the telescopic mechanism of the instrument holder, the following operations and effects can be obtained. That is, in the case of a dental examination table targeted by the present invention, when a patient is introduced onto the examination table at the start of the examination, the patient is seated on a seat seat at a low position for introduction, and automatic posture control operation means ( For example, by operating an operation switch provided on the operation panel, a seat seat is raised, and a standing backboard seat is laid down and positioned in a supine medical posture corresponding to a medical treatment mode. . In the present invention, the position of the medical table is controlled based on the control operation command of the automatic posture control operation means, and the position of the headrest or the back plate sheet or both is extended and contracted according to the physique of the patient. By the operation control based on the information, the headrest and the instrument holder are accurately positioned at the intended relative positions. Therefore, as described above, if the relative position information of the headrest and the instrument holder is stored in advance in the storage means in accordance with the operator's unique usability, etc., automatic posture control operation of the clinical table can be performed. In addition, the headrest and the instrument holder are automatically set so as to be in the desired relative positional relationship in association with the expansion and contraction movement of the headrest or back plate seat according to the patient's physique, and the setting conforms to the setting. The instrument holder is positioned. With such a function, preparation work from introduction of a patient at the start of medical treatment to setting of a medical posture is performed efficiently and accurately.

  In the present invention, if the extension mechanism of the instrument holder includes a means for invalidating the linkage with other extension mechanisms, only the extension mechanism of the instrument holder can be extended and retracted alone. Can do. Therefore, after the telescopic mechanism of the instrument holder is expanded and contracted along with the expansion and contraction of the other telescopic mechanisms, the operator himself / herself adjusts the telescopic mechanism of the instrument holder only so that it is easy to use. Therefore, it is possible to optimize medical work more.

  In this invention, the holder main-body part in the said instrument holder is detachably mounted | worn with the front-end | tip part of the said heel member, and the auxiliary | assistant mounting part which can detachably mount this holder main-body part to the other site | part of the said diagnostic table If the instrument held by the instrument holder is not used, or the holder body is not in the vicinity of the headrest depending on the operator's medical position, depending on the medical treatment mode. In the preferred case, by removing the holder body and attaching it to the auxiliary attachment part of the other part, the flexible response according to various medical treatment modes can be easily performed.

It is a schematic side view which shows one Embodiment of the dental examination table which concerns on 1st invention. It is a partially broken plan view of the dental clinic. FIG. 3 is a schematic diagram corresponding to a cross section taken along line XX in FIG. 2. It is a partially broken top view which shows another embodiment of the dental treatment table. It is the same figure as FIG. 4 which shows the modification of the dental clinic. It is a partially broken top view which shows another embodiment of the dental treatment table. It is the same figure as FIG. 6 which shows the modification of the dental clinic. FIG. 7 is a view similar to FIG. 6 showing another modification of the example shown in FIG. 6. FIG. 8 is a view similar to FIG. 7 showing another modification of the example shown in FIG. 7. It is a partially broken top view which shows another embodiment of the dental treatment table. It is a schematic side view which shows one Embodiment of the dental examination table which concerns on 2nd and 3rd invention. It is a partially broken plan view of the dental clinic. It is the same figure as FIG. 12 which shows the modification of the dental clinic. It is a conceptual diagram explaining an example of the structure of the Y line part in FIG. It is a disassembled perspective view of the principal part of one Embodiment of the instrument holder employ | adopted as the dental clinic of this invention. It is a partial vertical side view of the instrument holder. It is a top view of the principal part which shows an example of the operation panel with which the dental examination table of this invention is equipped. It is a control block diagram which shows an example of operation control of the dental examination table of this invention.

  Hereinafter, embodiments of a dental examination table according to the present invention will be described with reference to the drawings. A dental examination table A shown in FIG. 1 to FIG. 3 generally includes a base 1, a seat 2 supported on the base 1 through a lifting mechanism 1a so as to be vertically movable, and the seat 2, a back plate sheet 3 connected to one end of the back plate in a tiltable manner, a headrest 4 connected to an upper end portion of the back plate sheet 3 (the end portion on the head side of the seated patient), and the back plate sheet 3 and an instrument holder 5 held on the shoulder portion. The seat 2 is composed of a seat base (hereinafter referred to as a base frame) 2a and a seat main body 2b made of a cushion material fixed and integrated with the upper surface of the base frame 2a. A tray table 6 is supported on one side of the base frame 2a so as to be movable horizontally and vertically, and a spit-on device 7 is attached to the other side. A first back plate frame 30 is connected to one end of the base frame 2a via a hinge pin 2c so as to be tiltable, and the back plate sheet 3 is connected to the first back plate frame 30 via a telescopic mechanism 8 described later. A second back plate frame 3a supported so as to be movable along the connecting direction, and a back plate seat main body 3b made of a cushion material fixed to and integrated with the surface of the second back plate frame 3a. The headrest 4 is composed of a support member 4a that is held on the second back plate frame 3a so as to be stretchable along the connecting direction, and a cushion material that is integrally fixed and supported at the tip of the support member 4a. It consists of a headrest body 4b.

  The expansion / contraction mechanism 8 includes a pair of rail members 8a and 8a fixed to the first back plate frame 30 and a pair of rail members 8a and 8a fixed to the second back plate frame 3a and slid along the longitudinal direction thereof. It consists of the sliding member 8b supported movably. The rail members 8a and 8a are arranged in parallel along the direction in which the back plate seat 3 is connected to the seat 2 and the sliding member 8b supported between the rail members 8a and 8a is in the direction of connection. It can slide along. Accordingly, the back plate sheet 3 is supported with respect to the first back plate frame 30 in an expandable / contractable relationship along the continuous direction. Between the rail members 8a, 8a and the sliding member 8b, a sliding member (not shown) having frictional resistance is interposed. When the external force along the connecting direction is applied to the sliding member 8b, the rail member 8b Although it slides with respect to the members 8a and 8a, it is configured to be able to stand still at that position when no external force is applied. The supporting member 4a of the headrest 4 has a base portion 4aa inserted from one end portion of the sliding member 8b into a guide space 8c formed along the sliding direction of the sliding member 8b, and a guide space. It is held so as to be slidable relative to 8c, and extends so as to protrude from the upper end of the back plate sheet 3. Therefore, the headrest 4 can be expanded and contracted relatively with respect to the back plate sheet 3, and the expansion and contraction mechanism 9 of the headrest 4 is configured by a mechanism capable of relative sliding between the base portion 4aa of the support member 4a and the guide space 8c. The A sliding member (not shown) with frictional resistance is interposed between the base 4aa and the guide space 8c. When an external force is applied to the headrest 4 along the sliding direction, the base 4aa is guided to the guide space 8c. However, it is configured to be stationary at that position when no external force is applied.

  In the middle of the supporting member 4a of the headrest 4, a branching member 4c having an orthogonal relationship is branched, and a supporting member 5b constituting the instrument holder 5 is arranged in parallel with the supporting member 4a at the tip thereof. And is slidably held. A sliding member (not shown) with frictional resistance is interposed between the branch rod member 4c and the rod member 5b of the instrument holder 5, and an external force along the sliding direction is applied to the rod member 5b. It slides with respect to the branching member 4c, but it is configured to be able to rest at that position when no external force is applied. The expansion / contraction mechanism 10 of the instrument holder 5 is configured by a mechanism capable of sliding relative to the branch member 4c and the flange member 5b. The instrument holder 5 includes the flange member 5b and a holder main body 5a that is integrally supported by the tip of the flange member 5b. The flange member 5b extends from a holding portion by the branch rod member 4c, and has a spine. A holder main body 5 a that protrudes from the shoulder portion of the plate sheet 3 and is supported at the tip thereof extends to the vicinity of the headrest 4. The holder body 5a holds a plurality of dental instruments (handpieces) 50 that can be picked up or stored by the operator's handling operation. FIG. 1 shows that the instrument 50 is a three-way syringe and a vacuum syringe. The instrument 50 is connected to a working medium pipe interior hose 50a derived from the spit device 7 or the like.

In the dental examination table A configured as described above, when performing a dental examination, when a patient (not shown) is introduced, the seat sheet 2 is held at a low position where the patient can easily sit and the back plate sheet 3 is in an upright state. It is said that. Further, the relative position between the headrest 4 and the instrument holder 5, that is, the holder main body 5a is determined by sliding the scissors member 5b constituting the telescopic mechanism 10 with respect to the branch scissors member 4c. It is adjusted and set to an appropriate position according to usability. When the patient is seated on the seat 2, the back plate sheet 3 is manually expanded and contracted by the expansion / contraction mechanism 8 so as to match the patient's physique. The expansion and contraction of the back plate 3 also causes the headrest 4 and the instrument holder 5 to expand and contract integrally. Thus, after adjusting the position of the back board sheet 3 according to the patient's physique, the seat sheet 2 is raised by the elevating mechanism 1a, and the back board sheet 3 is tilted by a tilting mechanism (not shown). Then, the patient is positioned in the supine medical posture as shown in FIG. If necessary, the back plate sheet 3 is further expanded and contracted in this state, and adjusted to better fit the patient's physique. Then, by manually operating the telescopic mechanism 9 of the headrest 4, the positional relationship between the head of the patient on the headrest 4 and the headrest 4 is adjusted so as to be in an appropriate state for medical treatment. At this time, the holder body 5a cooperates with the headrest 4 while maintaining the initially set relative position, thereby substantially extending the extension mechanism 9 of the headrest 4 and the extension mechanism of the instrument holder 5. A configuration in which each of the ten expansion / contraction operations is associated with each other is established. Thereafter, if necessary, the telescopic mechanism 10 is manually operated to finely adjust the relative position between the patient's head on the headrest 4 and the instrument holder 5 so that the operator can easily perform medical care. As described above, the expansion / contraction mechanism 10 of the instrument holder 5 can be expanded / contracted regardless of the expansion / contraction mechanism 9 of the headrest 4. Therefore, the expansion / contraction mechanism 10 itself can perform expansion / contraction operation with the expansion / contraction mechanism 9. A means for invalidating the association is provided. The positioning of the medical posture is automatically performed by operating the corresponding operation switch based on the automatic posture control mode set in advance according to the medical characteristics of the operator or according to the medical mode. This will be described in detail later.
Further, in the embodiment of the dental examination table A, in addition to the expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanism 10 of the instrument holder 5, a configuration in which the back plate sheet 3 includes the expansion / contraction mechanism 8 is disclosed. The back plate sheet 3 may have a configuration in which the expansion / contraction mechanism 8 is not provided, and it is sufficient that at least the headrest 4 and the instrument holder 5 cooperate to maintain a relative position.

  In the example shown in FIGS. 1 to 3, the expansion / contraction mechanism of the headrest 4 with respect to the back plate sheet 3 can be used, and the expansion / contraction mechanism 8 of the back plate sheet 3 can also serve as the expansion / contraction mechanism of the headrest 4. That is, the relative position between the headrest 4 and the holder body 5a of the instrument holder 5 is determined by sliding the collar member 5b of the instrument holder 5 with respect to the branch collar member 4c (actuating the telescopic mechanism 10). When the patient is seated on the seat 2 after being adjusted and set to an appropriate position according to the convenience of the surgeon, the expansion mechanism 8 is attached to the back plate sheet 3 so as to match the patient's physique. And extend and contract manually. The expansion and contraction of the back plate 3 also causes the headrest 4 and the instrument holder 5 to expand and contract integrally. Accordingly, the headrest 4 and the instrument holder 5 expand and contract while maintaining the initial relative positional relationship, and the expansion / contraction mechanism 8 performs the expansion / contraction mechanism of the back plate sheet 3 and the expansion / contraction mechanism of the instrument holder 5. The interlocking mechanism that interlocks, or the interlocking mechanism that interlocks the expansion / contraction mechanism of the headrest 4 and the expansion / contraction mechanism of the instrument holder 5 is also substantially used.

  In the dental examination table B shown in FIG. 4, the back plate sheet 3 is fixed to the first back plate frame 30 so that the headrest 4 and the instrument holder 5 can expand and contract in accordance with the patient's physique. A configured example is shown. That is, a rack gear 9a along the longitudinal direction is connected to the support member 4a of the headrest 4, and a pinion gear 9b meshing with the rack gear 9a is attached to the first back plate frame 30 so as to be rotatable about the rack gear 9a and The telescopic mechanism 9 of the headrest 4 is configured by the pinion gear 9b. A rack gear 10a along the longitudinal direction is connected to the flange member 5b of the instrument holder 5, and a pinion gear 10b meshing with the rack gear 10a is attached to the first back plate frame 30 so as to be rotatable about the rack gear. A telescopic mechanism 10 of the instrument holder is constituted by 10a and the pinion gear 10b. Further, both the pinion gears 9b and 10b are engaged with each other, thereby constituting the extension mechanism 9 and the interlocking mechanism 11 of the extension mechanism 10. In FIG. 4, the illustration of the tray table 6 as shown in FIG. 2 is omitted (the same applies to the plan view of the subsequent dental examination table).

  In the dental examination table B having such a configuration, when adjusting the protruding width of the headrest 4 from the back plate sheet 3 in accordance with the patient's physique as described above, the headrest 4 is moved by the telescopic mechanism 9 by manual operation. The position of the headrest 4 is adjusted so that the headrest 4 can be extended and contracted. Along with this expansion / contraction operation, the pinion gear 9b meshing with the rack gear 9a rotates around its support shaft. As the pinion gear 9b rotates, the pinion gear 10b meshing with the pinion gear 9b also rotates with rotation. Then, due to the meshing relationship between the pinion gear 10 b and the rack gear 10 a, the flange member 5 b of the instrument holder 5 expands and contracts in the same direction as the headrest 4. Therefore, if the relative positional relationship between the headrest 4 and the instrument holder 5 is initially set so as to suit the convenience of the surgeon, the relative positional relationship is maintained even if the headrest 4 is expanded and contracted. The suitability of picking up or storing the instrument 50 held by the instrument holder 5 does not change. It should be noted that a load member such as a torque limiter is interposed between any one of the pinion gears 9b and 10b so that the headrest 4 cannot be expanded or contracted unless a certain external force is applied. Is desirable. By comprising in this way, it can prevent that the headrest 4 and the instrument holder 5 are displaced unexpectedly. Since the other configuration of the dental examination table B is the same as that of the dental examination table A, common portions are denoted by the same reference numerals and description thereof is omitted.

  A dental examination table C shown in FIG. 5 shows a modification of the dental examination table B, and is different from the dental examination table B in that the expansion / contraction mechanism 9 of the headrest 4 is expanded / contracted by an electric mechanism. The expansion / contraction mechanism 9 includes a double rack gear 9c connected to the support member 4a along the longitudinal direction thereof, a pinion gear (worm wheel) 9d engaged with one rack of the double rack gear 9c, and an engagement with the worm wheel 9d. The motor 9f, which integrally fixes the worm gear 9e to the output shaft, and the pinion gear 9g that meshes with the other rack of the double rack gear 9c. The telescopic mechanism 10 of the instrument holder 5 includes a rack gear 10a and a pinion gear 10b as described above. And the pinion gear 9g and the pinion gear 10b mesh, and the interlocking mechanism 11 of the expansion-contraction mechanisms 9 and 10 is comprised by this. The worm wheel 9d, the pinion gear 9g, and the pinion gear 10b are supported by the first back plate frame 30 so as to be rotatable about the shaft, and the motor 9f is fixed to the first back plate frame 30.

  In the dental examination table C having such a configuration, when adjusting the width of the headrest 4 from the back plate sheet 3 in accordance with the patient's physique in the same manner as described above, the motor 9f is operated, and this rotation is performed by the worm gear 9e and the worm gear. The headrest 4 is transmitted to the double rack gear 9c via the wheel 9d and converted into a linear motion of the support member 4a that reciprocates along the connecting direction of the back plate seat 3 with respect to the seat 2, and the headrest 4 is applied to the patient's head. Adjust the position so that it fits. With this expansion / contraction operation, the pinion gear 9g meshing with the double rack gear 9c rotates around its support shaft. As the pinion gear 9g rotates, the pinion gear 10b meshing with the pinion gear 9g also rotates. Then, due to the meshing relationship between the pinion gear 10 b and the rack gear 10 a, the flange member 5 b of the instrument holder 5 expands and contracts in the same direction as the headrest 4. Accordingly, as described above, if the relative positional relationship between the headrest 4 and the instrument holder 5 is initially set so as to suit the convenience of the surgeon, even if the headrest 4 is expanded and contracted, the relative positional relationship Is maintained, and the handleability of pick-up or storage of the instrument 50 held by the instrument holder 5 does not change. Since the other configuration of the dental examination table C is the same as that of the dental examination table B, the same reference numerals are given to the common parts, and the description thereof is omitted.

  The dental examination table D shown in FIG. 6 shows an example in which a pantograph mechanism is used to configure a telescopic mechanism for the headrest 4, a telescopic mechanism for the instrument holder 5, and an interlocking mechanism that links the two. In other words, in the illustrated pantograph mechanism 12, the fulcrum pin 12 a at the apex position of the pantograph structure is fixed to the first back plate frame 30, and the movable pin 12 b is attached to the first back plate frame 30 of the headrest 4 and the instrument holder 5. A parallelogram (diamond-shaped) link mechanism that is slidably inserted into a long hole 30a formed along the expansion and contraction direction and that has both pins 12a and 12b as diagonal positions is a basic configuration. The supporting members 4a and instruments of the headrest 4 are respectively connected to the rocking end sides of the links 12c and 12d on the adjacent two sides connected by the fulcrum pin 12a via the connecting links 12e and 12f connected to the pins. The base end portion of the flange member 5b of the holder 5 is pin-coupled.

  In the dental examination table D having such a configuration, when adjusting the width of the headrest 4 from the back plate sheet 3 in accordance with the patient's physique as described above, the headrest 4 is manually pulled out from the back plate sheet 3; Alternatively, when the back plate sheet 3 is pushed back, the link structure of the pantograph mechanism 12 moves with the parallelogram deformation about the fulcrum pin 12a as a fulcrum, and is restricted by the long hole 30a of the movable pin 12b. By sliding, the flange member 5 b of the instrument holder 5 moves in the same direction as the support member 4 a of the headrest 4. Accordingly, with the adjustment of the position of the headrest 4, the instrument holder 5 is displaced while maintaining the initially set relative positions, and the instrument 50 held in the instrument holder 5 is picked up or stored. Suitability is maintained as it is. As described above, the panda graph mechanism 12 constitutes an interlocking mechanism of both the expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanism 10 of the instrument holder 5 due to its mechanical characteristics. In order to clearly indicate that the mechanism is included, reference numerals as illustrated are given.

  The dental examination table E shown in FIG. 7 shows an example in which the pantograph mechanism is used similarly to the dental examination table D, and the extension mechanism of the headrest 4, the extension mechanism of the instrument holder 5, and the interlocking mechanism that links the two are configured. Is. However, the basic configuration of the pantograph mechanism 12 in the dental examination table E is the same as that of the pantograph mechanism 12 in the dental examination table D, but instead of the connecting links 12e and 12f, the links 12c and 12d are provided in the longitudinal direction. In the dental clinic table D, the base ends of the support member 4a of the headrest 4 and the base member 5b of the instrument holder 5 are pin-coupled through the long holes 12g and 12h formed along the long holes 12g and 12h, respectively. Different from the pantograph mechanism 12.

  In the dental examination table E having such a configuration, when adjusting the width of the headrest 4 from the back plate sheet 3 in accordance with the patient's physique as described above, the headrest 4 is manually pulled out from the back plate sheet 3; Alternatively, when the back plate sheet 3 is pushed back, the link structure of the pantograph mechanism 12 moves with the parallelogram deformation about the fulcrum pin 12a as a fulcrum, and is restricted by the long hole 30a of the movable pin 12b. By the sliding and the mutual sliding regulated by the pin coupling of the supporting member 4a and the supporting member 5b through the long holes 12g and 12h, the supporting member 4a of the instrument holder 5 and the supporting member 4a of the headrest 4 are Move in the same direction. Accordingly, with the adjustment of the position of the headrest 4, the instrument holder 5 is displaced while maintaining the initial relative position as described above, and the pickup of the instrument 50 held by the instrument holder 5 is performed. Alternatively, storage handling suitability is maintained as it is. Also in this case, the panda graph mechanism 12 constitutes an interlocking mechanism of both the expansion mechanism 9 of the headrest 4 and the expansion mechanism 10 of the instrument holder 5 due to its mechanical characteristics. In order to clearly indicate that the mechanism is included, reference numerals as illustrated are given.

  The dental examination table F shown in FIG. 8 serves as the pantograph mechanism 12 in the dental examination table D shown in FIG. 6 as the same interlocking mechanism and the extension / contraction mechanism of the instrument holder 5, and the headrest 4 is electrically extended / contracted. It differs from the dental examination table D shown in FIG. 6 in that it is configured to expand and contract by the mechanism 9. The telescopic mechanism 9 of the headrest 4 includes a rack gear 9h connected to the support member 4a along the longitudinal direction thereof, a pinion gear (worm wheel) 9i meshing with the rack gear 9h, and a worm gear 9j meshing with the worm wheel 9i. The motor 9k is integrally fixed to the output shaft. Therefore, by operating the motor 9k, the support member 4a of the headrest 4 can be expanded and contracted along the expansion / contraction direction. Further, at the base end portions of the supporting member 4a of the headrest 4 and the supporting member 5b of the instrument holder 5, the swing end sides of the links 12c and 12d in the pantograph mechanism 12 similar to the example shown in FIG. It is pin-coupled via connection links 12e and 12f that are pin-coupled. The worm wheel 9 i is supported on the first back plate frame 30 so as to be rotatable about the shaft, and the motor 9 k is fixed to the first back plate frame 30.

  In the dental examination table F having such a configuration, when adjusting the protruding width of the headrest 4 from the back plate sheet 3 in accordance with the patient's physique in the same manner as described above, the motor 9k is operated, and this rotation is performed by the worm gear 9j and the worm gear. This is transmitted to the rack gear 9h via the wheel 9i, converted into a linear motion of the support member 4a, and the position of the headrest 4 is adjusted to fit the patient's head. Along with this expansion and contraction operation, the link structure of the pantograph mechanism 12 performs a movement accompanied by the deformation of the parallelogram with the fulcrum pin 12a as a fulcrum, and the sliding is regulated by the elongated hole 30a of the movable pin 12b. The ment member 5 b of the ment holder 5 moves in the same direction as the support member 4 a of the headrest 4. Accordingly, with the adjustment of the position of the headrest 4, the instrument holder 5 is displaced while maintaining the initially set relative positions, and the instrument 50 held in the instrument holder 5 is picked up or stored. Suitability is maintained as it is. As described above, the pandagraph mechanism 12 serves as the expansion / contraction mechanism 10 of the instrument holder 5 and constitutes an interlocking mechanism of the expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanism 10 of the instrument holder 5 due to its mechanical characteristics. In FIG. 8, in order to clearly indicate that these mechanisms are included, reference numerals as shown in FIG.

  The dental examination table G shown in FIG. 9 serves as the pantograph mechanism 12 in the dental examination table E shown in FIG. 7 also as the interlocking mechanism similar to the above and the telescopic mechanism of the instrument holder 5, and the headrest 4 is shown in FIG. 7 is different from the dental examination table E shown in FIG. 7 in that it is configured to be expanded and contracted by the electric expansion and contraction mechanism 9 shown in the example. Accordingly, similarly to the example shown in FIG. 8, the pantograph mechanism 12 is expanded and contracted by operating the expansion / contraction mechanism 9 to adjust the protruding width of the headrest 4 from the back plate sheet 3 in accordance with the physique of the patient. In the same manner as in the example, the flange member 5b of the instrument holder 5 functions to move in the same direction as the support member 4a of the headrest 4. Accordingly, with the adjustment of the position of the headrest 4, the instrument holder 5 is displaced while maintaining the initial relative position as described above, and the pickup of the instrument 50 held by the instrument holder 5 is performed. Alternatively, storage handling suitability is maintained as it is. Also in this case, the pandagraph mechanism 12 serves as the expansion / contraction mechanism 10 of the instrument holder 5 and constitutes an interlocking mechanism of the expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanism 10 of the instrument holder 5 due to its mechanical characteristics. In order to clearly indicate that these mechanisms are included in FIG.

  The dental examination table H shown in FIG. 10 is configured such that the telescopic mechanism 8 of the back plate sheet 3, the telescopic mechanism 9 of the headrest 4 and the telescopic mechanism 10 of the instrument holder 5 are all made by an electric mechanism. . The expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanism 10 of the instrument holder 5 are configured to link the expansion / contraction operation by an electrical control mechanism. That is, the expansion / contraction mechanism 8 of the back plate sheet 3 is supported by the rack gear 8c fixed to the first back plate frame 30 and the second back plate frame 3a (see FIG. 3) so as to be axially rotatable and meshes with the rack gear 8c. A pinion gear (worm wheel) 8d and a motor 8f fixed to the second back plate frame 3a by directly connecting a worm gear 8e meshing with the worm wheel 8d to the output shaft. The rack gear 8c is arranged along the direction in which the back plate seat 3 is connected to the seat 2 and by operating the motor 8f, the rotational power is transmitted to the worm gear 8e and the worm wheel 8d. The rack gear 8c is engaged and rolled relative to the rack gear 8c, whereby the back plate seat 3 is expanded and contracted with respect to the seat seat 2. Therefore, the position of the back plate sheet 3 is adjusted according to the patient's physique.

  The extension / contraction mechanism 9 of the headrest 4 includes a rack gear 9h, a pinion gear (worm wheel) 9i, a worm gear 9j, and a motor 9k, as in the examples shown in FIGS. Accordingly, by operating the motor 9k, the rotational power is transmitted to the worm gear 9j, the worm wheel 9i, and the rack gear 9h, thereby causing the rack gear 9h to be screwed and unscrewed, and the headrest 4 with respect to the back plate 3 The position of the headrest 4 is adjusted according to the patient's physique. The telescopic mechanism 10 of the instrument holder 5 includes a rack gear 10c connected to the flange member 5b of the instrument holder 5 along the longitudinal direction thereof, and a rack gear 10c supported by the second back plate frame 3a so as to be axially rotatable. The worm gear 10e meshing with the worm wheel 10d is directly connected to the output shaft and fixed to the second back plate frame 3a. Therefore, by operating the motor 10f, the rotational power is transmitted to the worm gear 10e, the worm wheel 10d, and the rack gear 10c, whereby the rack gear 10c is screwed and unscrewed, and the back plate of the instrument holder 5 is operated. The sheet 3 is expanded and contracted to adjust its position.

  The worm wheel 9i constituting the expansion / contraction mechanism 9 incorporates a rotation amount detection means such as a potentiometer, and when operating the expansion / contraction mechanism 9 according to the patient's physique, based on detection information by the rotation amount detection means, The operation control of the motor 10f of the telescopic mechanism 10 is performed so as to maintain a preset relative positional relationship between the headrest 4 and the instrument holder 5. When the expansion / contraction mechanism 8 is expanded / contracted, it is not necessary to change the relative positions of the headrest 4 and the instrument holder 5 with respect to the back plate sheet 3, and therefore the expansion / contraction mechanism 9 and the expansion / contraction mechanism 10 are not expanded / contracted in principle. However, as in the configuration of the dental examination table H in FIG. 10, in order to maintain the relative positional relationship of the headrest 4 and the instrument holder 5 with respect to the back plate sheet 3, the telescopic mechanism 9 is parallel to the telescopic operation of the telescopic mechanism 8. When it is necessary to extend / contract the frame, the expansion / contraction mechanism 10 is also configured to expand / contract according to the electrical relation. Since the other configuration is the same as that of the dental examination table A shown in FIG. 2, the same reference numerals are given to the common parts and the description thereof is omitted.

  In addition, if it is an electrical structure, it is possible by electrical control to provide a time difference with the start of the expansion-contraction operation | movement of the headrest 4, and the timing when the headrest 4 and the instrument holder 5 become relative positional relationship. That is, a differential or differential stop means can be appropriately incorporated in the control of the linkage mechanism so as to change the expansion or contraction operation ratio of the headrest 4 and the instrument holder 5 to change the expansion or contraction operation ratio. By adding a function to differentially and differentially stop the headrest 4 expansion and contraction of the instrument holder 5 without immediately linking the expansion and contraction of the instrument holder 5, the movement of the instrument holder 5 from the headrest 4 to the appropriate position can be performed. Can be delayed. For example, in the operation of maintaining an appropriate distance, the speed of expansion and contraction of the headrest 4 and the instrument holder 5 may be changed to make a stop with a time difference (differential stop), or the start timing may be shifted even at the same speed. (Differential) configuration is possible. As a result, there is a case where the fear that the patient or the operator may feel along with the interlocking between the two may be reduced by the immediate expansion and contraction of the instrument holder 5 arranged in the vicinity. So meaningful.

  FIGS. 11 to 13 show an example in which the instrument holder 5 is attached to the base frame 2 a and the holder main body 5 a extends in the vicinity of the headrest 4. Since the basic configuration of the dental examination table I shown in FIG. 11 is the same as that of the dental examination table A shown in FIG. 1, common portions are denoted by the same reference numerals and description thereof is omitted. In this example, the collar body 5b of the instrument holder 5 is connected to the telescopic rod 10Aa of the telescopic mechanism 10A composed of an air cylinder or the like attached to the base frame 2a, and the holder body held at the tip of the collar member 5b. 5a extends to the vicinity of the headrest 4. As shown in FIG. 12, the back plate sheet 3 is provided with an expansion / contraction mechanism 8 for the back plate sheet 3 and an expansion / contraction mechanism 9 for the headrest 4. The telescopic mechanism 8 includes a rack gear 8g fixed to the first back plate frame 30, and a pinion gear 8h that meshes with the rack gear 8g and is supported on the second back plate frame 3a (see FIG. 3) so as to be rotatable about the shaft. . The rack gear 8g is disposed along the direction in which the back plate seat 3 is connected to the seat 2 and by manually operating the back plate 3 the pinion gear 8h rolls along the rack gear 8g. The back plate sheet 3 can be expanded and contracted with respect to the seat sheet 2.

The telescopic mechanism 9 of the headrest 4 includes a rack gear 9m connected to the support member 4a along the longitudinal direction thereof, and a pinion gear 9n meshed with the rack gear 9m and supported on the second back plate frame 3a so as to be rotatable about the shaft. It is composed of. Therefore, the headrest 4 can be manually pulled out from the backboard sheet 3 or pushed back to the backboard sheet 3, thereby adjusting the width of the headrest from the backboard sheet 3 according to the patient's physique. It is possible. The pinion gear 9n incorporates a rotation amount detection means such as a potentiometer. When the expansion / contraction mechanism 9 is expanded or contracted according to the physique of the patient, the headrest 4 and the instrument are detected based on the detection information by the rotation amount detection means. The expansion / contraction operation control of the expansion / contraction mechanism 10A is performed so as to maintain a preset relative positional relationship with the holder 5. Thereby, the structure which each expansion-contraction operation | movement of the expansion-contraction mechanism 9 of the headrest 4 and the expansion-contraction mechanism 10A of the instrument holder 5 mutually connects is established.
Similarly, a rotation amount detection means such as a potentiometer is also incorporated in the pinion gear 8h, and when the expansion / contraction mechanism 8 is expanded / contracted according to the patient's physique, the headrest 4 and the instrument are detected based on the detection information by the rotation amount detection means. A configuration in which expansion / contraction differential control of the expansion / contraction mechanism 10 </ b> A is performed so as to maintain a preset relative positional relationship with the holder 5.
It should be noted that a load member such as a torque limiter is interposed between the pinion gears 8h and 9n so that each of the expansion and contraction mechanisms 8 and 9 does not expand and contract unless a certain external force is applied. Is desirable.

FIG. 13 shows a dental examination table J configured such that the telescopic mechanism 8 and the telescopic mechanism 9 in FIG. 12 are each operated by an electric mechanism. That is, the telescopic mechanism 8 in this example includes a motor 8j in which a worm gear 8i meshed with the pinion gear 8h as a worm wheel is directly connected to an output shaft in addition to the rack gear 8g and the pinion gear 8h similar to those described above. The motor 8j is fixed to the second back plate frame 3a. The telescopic mechanism 9 in this example has a rack gear 9m and a pinion gear 9n similar to those described above, and a worm gear 9o that meshes with the pinion gear 9n as a worm wheel and is directly connected to the output shaft. The motor 9p fixed to the reference) is provided. These expansion / contraction mechanisms 8 and 9 both expand and contract by the operation of the motors 8j and 9p. The worm wheel 9n constituting the expansion / contraction mechanism 9 incorporates a rotation amount detection means such as a potentiometer as described above. When the expansion / contraction mechanism 9 is expanded / contracted according to the patient's physique, the rotation amount detection means Based on the detection information, expansion / contraction operation control of the expansion / contraction mechanism 10A is performed so as to maintain a preset relative positional relationship between the headrest 4 and the instrument holder 5. Thereby, the structure which each expansion-contraction operation | movement of the expansion-contraction mechanism 9 of the headrest 4 and the expansion-contraction mechanism 10A of the instrument holder 5 mutually connects is established.
Similarly, when a rotation amount detection means such as a potentiometer is incorporated in the pinion gear (worm wheel) 8h constituting the expansion / contraction mechanism 8 and the expansion / contraction mechanism 8 is expanded / contracted according to the patient's physique, the detection information by the rotation amount detection means is used. Based on this, it is possible to adopt a configuration in which expansion / contraction differential control of the expansion / contraction mechanism 10A is performed so as to maintain a preset relative positional relationship between the headrest 4 and the instrument holder 5.

FIG. 14 shows an example of the structure of the Y-line portion shown in FIG. 11, and the flange member 5b of the instrument holder 5 is connected to the expansion / contraction rod 10Aa of the expansion / contraction mechanism 10A arranged in a substantially horizontal state. The horizontal flange 5ba, the vertical flange 5bb connected to the tip of the horizontal flange 5ba so as to be rotatable around the vertical axis, and the upper end of the vertical flange 5bb so as to be tiltable about the horizontal axis. The instrument holder 5 is constituted by a holder body 5a supported at the tip of the tilting collar part 5bc. The connecting part between the horizontal hook part 5ba and the vertical hook part 5bb is equipped with a motor 5c and gear mechanisms 5d and 5e for driving and transmitting the rotational power of the motor 5c to the rotation around the vertical axis of the vertical hook part 5bb. Yes. The connecting portion between the vertical hook 5bb and the tilting hook 5bc includes a motor 5f and gear mechanisms 5g and 5h that drive and transmit the rotational power of the motor 5f to the tilting rotation around the horizontal axis of the tilting hook 5bc. Decorated. In the instrument holder 5 having such a configuration, the horizontal hook 5ba expands and contracts in the direction of arrow a by the operation of the expansion mechanism 10A, and the vertical hook 5bb rotates around the vertical axis as shown by the arrow b by the operation of the motor 5c. Then, by the operation of the motor 5f, the tilting collar portion 5bc tilts around the horizontal axis as shown by the arrow c. Accordingly, by appropriately operating these operating portions, the holder main body 5a is positioned at a position that is convenient for the operator, or when not in use, the holder main body 5a is retracted to a position that does not interfere with other medical work. be able to.
A potentiometer or the like can be incorporated in the gear 5h or the like, and the relative position with respect to the headrest 4 can be controlled based on the rotational position information. Further, the motor 5c, 5f may not be provided, and the rotation or tilting may be manually enabled via the gear mechanisms 5d, 5e, 5g, 5h.

  FIG.15 and FIG.16 shows one Embodiment of the instrument holder 5 employ | adopted as the dental examination table | surface of this invention, and shows the example in which the holder main body 5a is detachably supported with respect to the heel member 5b. It is. As shown in FIG. 15, a plurality of instrument holding portions 5i are formed on the holder body 5a that can be attached to and detached from the flange member 5b along the axial direction thereof. 5i... Holds various instruments 50 shown in FIG. 1 or 2 so that they can be picked up or stored. Each instrument holding portion 5i is provided with a sensor (not shown) for detecting the presence or absence of the instrument, and the power supply line and signal line 5j for the sensor are connected to the flange member 5b in the holder body 5a. It is connected to the male connector part 5k provided in the connection part. A push button 5n that is elastically urged by a compression spring 5m protrudes from a peripheral surface of a connection portion between the holder main body 5a and the flange member 5b, and a locking piece 5o is coupled to the push button 5n. . On the other hand, the connecting portion of the flange member 5b with the holder main body 5a has a female connector portion 5p that can be electrically coupled to the male connector portion 5k, and a locking recess 5q to which the locking piece 5o is locked. Is provided. The female connector portion 5p is connected with an electric wire 5r that is connected to a control portion (not shown) through the flange member 5b.

  In the instrument holder 5 having such a configuration, as shown in FIG. 16, from the state in which the holder body 5a and the flange member 5b are connected, the push button 5n is pushed down against the elasticity of the compression spring 5m, If operation is performed such that the locking of the locking piece 5o and the locking recess 5q is released and the holder body 5a is pulled out, the electrical connection between the male connector portion 5k and the female connector portion 5p is also released, and the holder body 5a. Can be removed. When attaching and connecting to the flange member 5b, the push button 5n is pushed in, the male connector portion 5k and the female connector portion 5p are aligned, and the holder body 5a is pushed toward the flange member 5b as shown in FIG. It can be in a connected state. The holder main body 5a detached from the flange member 5b can be mounted on an auxiliary mounting portion 7a formed on the side portion of the spittoon device 7, for example, as shown in FIG. The auxiliary mounting portion 7a has the same structure as that of the connecting portion of the flange member 5b, and the holder main body 5a is attached to and detached from the auxiliary mounting portion 7a by the same one-touch operation as described above. It is possible to hold various instruments in the same manner in the holder main body 5a mounted on the auxiliary mounting portion 7a. Therefore, depending on the medical treatment mode, the instrument is picked up or stored in this state to perform the medical work. Can be used for When the instrument held by the holder body 5a is not used depending on the medical treatment mode, the holder body 5a can be attached to the auxiliary attachment portion 7a and retracted.

  FIG. 17 is a plan view of a main part showing an example of an operation panel provided in the dental examination table of the present invention, and FIG. 18 is a control block diagram in the case of performing operation control of the dental examination table using the operation panel. An example is shown. The operation panel 13 shown in FIG. 17 is formed on one side of the tray table 6 shown in FIG. 2, and the lower part of the operation panel 13 is used to hold various instruments used mainly by doctors. An instrument holder 14 is provided. In the figure, an example is shown in which the instrument holder 14 holds a three-way syringe 14a, air turbine handpieces 14b and 14c, and a micromotor handpiece 14d. As shown in FIG. 2, the tray table 6 is supported on the side of the dental examination table A by a hanger arm 6a so as to be movable horizontally and vertically. The operator (doctor) holds a handle 6b formed on the tray table 6. The position of the tray table 6 is adjusted to a position where it is easy to perform medical treatment by gripping operation, and medical treatment is performed. On the tray table 6, various medicines necessary for dental care and medical instruments such as tweezers are placed, and further, a display unit (not shown) for displaying medical information and the like is installed on its side. .

  The operation panel 13 is provided with various operation switches, and the switches 13a to 13d are automatic position control switches of a medical table and correspond to an operation pattern predetermined according to a medical treatment mode. For example, the appropriate height of the seat seat 2 and the proper inclination angle of the backboard seat 3 when medical treatment of the back teeth or the front teeth is performed are stored in the storage means (CPU) 16a of the chair controller 16 described later, and the switch 13a and The switch 13b corresponds to these medical treatment modes. When the switch 13a is operated, the elevating mechanism 1a and the tilting mechanism of the seat seat 2 and the back plate seat 3 are actuated, and the seat seat 2 and the back plate seat 3 are adjusted to the height and inclination appropriate for the preset back teeth medical care. Automatically positioned at an angle. Further, when the switch 13b is operated, the seat sheet 2 and the back plate sheet 3 are automatically positioned at a height and an inclination angle appropriate for anterior tooth medical care. The switch 13c is an operation switch for returning the height and inclination angle of the seat seat 2 and the back plate seat 3 to the original state. In this case, the appropriate height and inclination angle are also stored in advance in the storage means (CPU). 16a. When the medical care is over, the switch 13c is operated to return to the original state, thereby making it easier for the patient to leave. And it maintains in this state and makes it wait until introduction of the next patient. The switch 13d is a tilting operation switch of the back plate sheet 3 for gargleing the patient during medical care. When it becomes necessary to gargle during medical treatment of the supine, the operator operates the switch 13d to operate the back plate. The sheet 3 stands up and is positioned at an appropriate angle for gargle. When the gargle is finished and returned to the supine medical posture, the backboard sheet 3 returns to the original supine medical posture by operating this switch 13d again.

  The switches 13e and 13f are operation switches for raising and lowering the seat seat 2 alone, and the switches 13g and 13h are operation switches for tilting the back plate seat 3 alone. The switches 13 i and 13 j are operation switches for extending and retracting the expansion and contraction mechanism 9 of the headrest 4. The expansion / contraction mechanism 9 targeted by the switches 13i, 13j is an expansion / contraction operation by an electric mechanism as shown in FIG. 5, FIG. 8, FIG. 9, FIG. These two types of switches 13i and 13j correspond to the degree of expansion / contraction of the expansion / contraction mechanism 9 stored in advance in the storage means according to the size of the patient, for example. When the switch is operated, the expansion / contraction mechanism 9 expands / contracts at a corresponding expansion / contraction degree, and the headrest 4 is automatically positioned so as to fit the patient's head. The switches 13k and 13m are operation switches for extending and retracting the expansion and contraction mechanism 8 of the back plate sheet 3. The expansion / contraction mechanism 8 targeted by the switches 13k and 13m is an expansion / contraction operation by an electric mechanism as shown in FIGS. These two types of switches 13e and 13f correspond to, for example, the degree of expansion / contraction of the expansion / contraction mechanism 8 stored in the storage means in advance according to the size of the patient's physique. When the switch is operated, the expansion / contraction mechanism 8 expands / contracts at a corresponding expansion / contraction degree, and the back plate sheet 3 is automatically positioned so as to fit the patient's back.

  The switch 13n is an operation switch for switching whether or not the expansion / contraction operation of the expansion / contraction mechanism 8 of the back plate 3 or the expansion / contraction mechanism 9 of the headrest 4 and the expansion / contraction mechanisms 10 and 10A of the instrument holder 5 are linked. . The relative position information between the headrest 4 and the instrument holder 5 is stored in advance in the storage means, and when the switch 13n is operated to be in an interlocked state, for example, any of the switches 13i and 13j Is operated, the control unit 15a, which will be described later, expands / contracts the expansion / contraction mechanism 9 of the headrest 4 at any one of the above-described expansion / contraction degrees, positions the headrest 4 at a position corresponding to the physique of the patient, and After acquiring the current position or position information of the expansion / contraction mechanism 9 by the potentiometer or the like, the expansion / contraction mechanisms 10 and 10A are expanded / contracted to position the instrument holder 5 so as to match the relative position information. In this way, the configuration in which the instrument holder 5 is expanded and contracted in conjunction with the expansion and contraction operation of the headrest 4 is applied to the examples of FIGS. 10 and 13. When any one of the switches 13k and 13m is operated, the control unit 15a expands / contracts the expansion / contraction mechanism 8 of the backplate sheet 3 at any one of the above-described expansion / contraction degrees, and the backplate sheet 3 corresponds to the patient's physique. The position of the instrument holder 5 is acquired and the extension / contraction mechanism 10A is extended / contracted to position the instrument holder 5 in accordance with the relative position information. As described above, the configuration in which the instrument holder 5 is expanded and contracted in conjunction with the expansion and contraction operation of the back plate sheet 3 is applied to the example of FIG. If one of the switches 13i to 13m is assigned to the telescopic switch of the instrument holder 5 when the switch 13n is operated to release the interlock, the instrument can be operated by operating the assigned switch. The expansion and contraction mechanisms 10 and 10A of the ment holder 5 can be expanded and contracted. Alternatively, a dedicated switch for the telescopic mechanisms 10 and 10A can be provided. The configuration in which the interlock is released by operating the switch 13n corresponds to a means for invalidating the association between the telescopic mechanisms 10 and 10A of the instrument holder 5 and the other telescopic mechanisms.

The switch 13o is an activation operation switch of the automatic position control switches 13a to 13d of the medical table. When any one of the automatic position control switches 13a to 13d is operated after the switch 13o is operated, The raising / lowering or tilting control of the seat seat 2 or the back plate seat 4 is performed. Further, when any one of the switches 13i to 13m is performed after the switch 13o is operated, the posture is automatically controlled by the tilting or extending / contracting operation of the back plate seat 3, or The telescopic mechanism 9 of the headrest 4 is expanded and contracted to automatically adjust its position, and at the same time, the relative position information between the headrest 4 and the instrument holder 5 stored in association with each of the switches 13i to 13m is read out, and accordingly The telescopic mechanisms 10 and 10A of the instrument holder 5 can be expanded and contracted to be positioned so as to match the position information of the instrument holder 5. The position information in this case is, for example, a plurality of position information stored in advance so as to suit the convenience of each operator when used by a plurality of surgeons, and the position information is set to the switches 13i to 13m. It is conceivable that the above functions can be achieved by allocating.
The operation panel 13 is provided with operation switches other than those described above, and various devices necessary for dental treatment are operated on the operation panel 13.
The above switch configuration is merely an example, and the switch may be provided at a different position, or the control content and function corresponding to each switch may be different. It is sufficient that at least a switch necessary for implementing the configuration of the present invention is provided.

  FIG. 18 shows an example of a control block diagram for controlling the operation of the dental examination table having the above-described configuration. The operation unit corresponds to the operation panel 13, and the switches 13a to 13o correspond to operation means. The display means 13A is provided, for example, on one side of the tray table 6, and displays the operating state of various operating units, various medical information related to the patient, and the like. The operation panel 13 is provided with a CPU 13B as an operation control unit, but may be configured integrally with a CPU 16a of a chair control unit 16 or a CPU 15a of a support control unit which will be described later. The chair control unit 16 includes a CPU 16a as a control unit that controls the center of the control, and the chair driving unit 16b is a lifting mechanism 1a for the seat seat and a tilting mechanism for the backboard seat 3. The instrument driving means 16c controls supply of a working medium (air, electricity, water, vacuum, etc.) corresponding to various instruments. In addition, the servo control unit 16d opens and closes a hydraulic valve in a hydraulic mechanism used for the lifting mechanism and tilting mechanism of the seat seat 2 and the back plate seat 3 to control the lifting and tilting speed of the seat seat 2 and the back plate seat 3. To do. The motor control unit 16e controls the hydraulic pump of the hydraulic mechanism. Further, the SV control unit 16f controls various electromagnetic valves provided in the hydraulic mechanism. As described above, when there is an instruction to raise or lower the seat 2 or the back plate 3 by the switch operation, the chair driving means 16b is operated by the control of each of the control units 16d to 16f, and the seat 2 or the back A predetermined lifting or tilting operation of the plate sheet 3 is performed.

  The support control unit 15 includes a headrest expansion / contraction mechanism 9, a back plate expansion / contraction mechanism 8, and an instrument holder expansion / contraction mechanism 10 (10A), and a CPU 15a is provided as a control unit that controls these operations to be associated with each other. The CPU 15a includes storage means for storing preset relative position information between the headrest 4 and the instrument holder 5. The drive means 80, 90, 100 of each of the expansion / contraction mechanisms 8, 9, 10 (10A) is the motor, air cylinder, or the like exemplified in the above embodiments. Further, as the position detecting means 80a, 90a, 100a, a potentiometer or the like incorporated in each operation part is used. Position detection information by the position detection means 80a, 90a, 100a is input as support part position information from the CPU 15a of the support part control part 15 to the CPU 13B of the operation part 13, and the chair position control part 16 is based on the support part position information. Control of each part is performed. Further, the operation information of each switch is input from the CPU 13B of the operation unit 13 to the CPU 15a of the support unit control unit 15, and based on the position detection information by the position detection means 80a, 90a, 100a, the instrument holder 5 as described above. The position is adjusted.

  The structure of the instrument holder 5 is not limited to the illustrated one, and other structures can be adopted. It is also possible to add a tilting mechanism to the expansion / contraction mechanism 9 of the headrest 4 so that the headrest 4 can be tilted appropriately according to the medical treatment mode (for example, whether the medical treatment target is an upper jaw tooth or a lower jaw tooth). . Further, the control block diagram shown in FIG. 18 is merely an example, and each operation of the present invention can be controlled by another control block configuration.

A to J Dental examination table 2 Seat seat 2a Base frame (seat seat frame)
3 Back plate seat 4 Headrest 5 Instrument holder 5a Holder body 5b Ling member 8 Back plate seat expansion / contraction mechanism (back plate expansion / contraction mechanism)
9 Headrest telescopic mechanism (headrest telescopic mechanism)
10, 10A Instrument holder telescopic mechanism (instrument holder telescopic mechanism)
11 Interlocking mechanism 12 Pantograph mechanism (expansion / contraction mechanism, interlocking mechanism)
13a to 13d Automatic position control switch (automatic posture control operation means) of the medical table
15a CPU (control unit, storage means)
7a Auxiliary mounting part

Claims (12)

A seat plate, a back plate seat connected to one end portion of the seat seat so as to be tiltable, a headrest connected to an upper end portion of the back plate seat, and an inboard held on a shoulder portion of the back plate seat A dental clinic with a instrument holder,
The headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion and contraction mechanism,
The instrument holder includes a holder main body and a flange member that supports the holder main body, and can be expanded and contracted in a direction along the expansion and contraction direction of the headrest by an expansion and contraction mechanism.
A dental examination table characterized in that the extension and contraction operations of the headrest extension mechanism and the instrument holder extension mechanism are linked to each other. A seat plate, a back plate seat connected to one end portion of the seat seat so as to be tiltable, a headrest connected to an upper end portion of the back plate seat, and a base frame near a shoulder portion of the back plate seat A dental clinic table with an instrument holder held to span,
The headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion and contraction mechanism,
The instrument holder includes a holder main body and a flange member that supports the holder main body, and can be expanded and contracted in a direction along the expansion and contraction direction of the headrest by an expansion and contraction mechanism.
A dental examination table characterized in that the extension and contraction operations of the headrest extension mechanism and the instrument holder extension mechanism are linked to each other. A seat plate, a back plate seat connected to one end portion of the seat seat so as to be tiltable, a headrest connected to an upper end portion of the back plate seat, and a base frame near a shoulder portion of the back plate seat A dental clinic table with an instrument holder held to span,
The back plate sheet can be expanded and contracted in a direction along the connecting direction with the seat sheet by an expansion and contraction mechanism,
The instrument holder includes a holder main body and a flange member that supports the holder main body, and can be expanded and contracted in a direction along the expansion and contraction direction of the back plate sheet by an expansion and contraction mechanism.
A dental examination table characterized in that the expansion and contraction operations of the back plate seat expansion mechanism and the instrument holder expansion mechanism are linked to each other. In the dental examination table according to claim 3,
The headrest can be expanded and contracted in a direction along the connecting direction with the back plate sheet by an expansion and contraction mechanism,
A dental examination table characterized in that the extension and contraction operations of the headrest extension mechanism and the instrument holder extension mechanism are linked to each other. The dental clinic according to claim 1,
The headrest expansion and contraction mechanism and the instrument holder expansion and contraction mechanism are linked via an interlocking mechanism, and the headrest and the instrument holder are configured to be interlocked with each other. Dental clinic table. In the dental examination table according to claim 2,
The headrest expansion and contraction mechanism and the instrument holder expansion and contraction mechanism are linked via an interlocking mechanism, and the headrest and the instrument holder are configured to be interlocked with each other. Dental clinic table. In the dental examination table according to claim 3,
The expansion mechanism of the back plate sheet and the expansion mechanism of the instrument holder are linked through an interlocking mechanism, and the expansion and contraction operations of the back plate sheet and the instrument holder are performed in conjunction with each other. A dental clinic characterized by that. The dental clinic according to claim 4,
The headrest expansion and contraction mechanism and the instrument holder expansion and contraction mechanism are linked via an interlocking mechanism, and the headrest and the instrument holder are configured to be interlocked with each other. Dental clinic table. In the dental clinic according to any one of claims 1 to 4,
A storage means for storing relative position information with respect to a preset headrest when the instrument holder is used, and a control section for controlling the operation of the extension / contraction mechanism of the instrument holder, The position information is read out from the storage means when the instrument holder is positioned at a predetermined use position by using the expansion / contraction mechanism, and the operation of the expansion / contraction mechanism of the instrument holder is controlled based on the position information. The dental clinic. In the dental clinic according to any one of claims 1 to 4,
Controlling the operation of storage means for storing preset relative position information with respect to the headrest when using the instrument holder, automatic posture control operating means for the medical table, and the extension mechanism of the instrument holder And a control unit that controls the posture of the medical table based on the automatic posture control operation means, and the control unit controls the posture of the medical table based on the control operation command of the automatic posture control operation means, and in parallel with this. The position information is read from the storage means, and the operation of the telescopic mechanism of the instrument holder is controlled based on the position information so as to position the instrument holder at a predetermined use position. . In the dental examination table according to any one of claims 1 to 10,
A dental examination table, wherein the instrument holder expansion / contraction mechanism includes means for invalidating the linkage with another expansion / contraction mechanism. The dental clinic according to any one of claims 1 to 11,
A holder main body portion in the instrument holder is detachably attached to a distal end portion of the heel member, and an auxiliary attachment portion is provided at another part of the medical table so that the holder main body portion can be detachably attached. A dental clinic characterized by

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