EP0038451B1 - Steuereinrichtung für einen zahnärztlichen Behandlungsstuhl - Google Patents

Steuereinrichtung für einen zahnärztlichen Behandlungsstuhl Download PDF

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Publication number
EP0038451B1
EP0038451B1 EP81102504A EP81102504A EP0038451B1 EP 0038451 B1 EP0038451 B1 EP 0038451B1 EP 81102504 A EP81102504 A EP 81102504A EP 81102504 A EP81102504 A EP 81102504A EP 0038451 B1 EP0038451 B1 EP 0038451B1
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EP
European Patent Office
Prior art keywords
chair
values
key
theoretical
preliminary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81102504A
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German (de)
English (en)
French (fr)
Other versions
EP0038451A1 (de
Inventor
Josef Pabst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0038451A1 publication Critical patent/EP0038451A1/de
Application granted granted Critical
Publication of EP0038451B1 publication Critical patent/EP0038451B1/de
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/02—Chairs with means to adjust position of patient; Controls therefor

Definitions

  • the invention relates to a control device for a dental treatment chair, with a program control device with setpoint-actual value comparison and several program selection buttons, when actuated adjustment devices for adjusting at least the seat height and the inclination of the backrest of the chair are activated, whereby the chair in a through Setpoint predetermined position is automatically adjusted, as well as with correction switching elements acting on the adjusting devices, which are only effective during the actuation period.
  • the chair positions previously programmable in the program control device can be called up by pressing a button.
  • a program selection button is assigned to each chair position. After pressing the button, the chair automatically moves to the chair position defined by the program, with all the degrees of freedom provided, e.g. Lifting height of the seat, inclination of the backrest, longitudinal displacement of the entire upper part of the chair, etc. must be taken into account.
  • the setpoints are stored in that the chair is first manually, i.e. by pressing in addition to the program selection buttons on the chair, which are only effective during the actuation period and directly control the relevant adjustment devices.
  • a digital switch corresponding to the chair position is stored in a digital memory using another switch. These digital values are then stored in the memory by means of a further key. These stored values form the program; they remain until new values are entered. If the chair has to be temporarily moved to another position, it can then be returned to the position saved as the setpoint. For this purpose, the adjustment device is switched on by pressing the program key and the relevant actual value transmitter is adjusted. The digital actual values are entered into a comparator via a computing circuit, at which the stored setpoint from the digital memory is simultaneously present.
  • certain chair positions can be stored in a known manner and these stored positions can also be brought back into the stored chair position by pressing the corresponding program key even if the chair is temporarily moved to another position by manual switch.
  • the switches that act directly on the adjustment devices in addition to the program selection buttons not only serve to bring the chair into the position provided for storing a specific program, but also to correct a chair position defined by a program, that is, to be able to adjust it individually. This is e.g. then desired if a patient is to be treated who deviates from the size determined by the program or if the practitioner cannot or does not want to use the usual treatment position stored in the program for a special treatment case.
  • the chair is optimally set for a treatment of the patient by a program and a post-correction using the correction switching elements. If, in the course of the treatment, the patient now moves to a different position, e.g. determined by another program, e.g. in a feeding position and then back to the starting position, the chair is after returning to the previously selected program position, which is achieved by pressing the program selection button that corresponds to the previously set program, no longer in the previously optimally set one Position. It is therefore necessary to carry out the post-correction already made at the beginning.
  • the object of the present invention is to improve a control device of the type mentioned at the outset such that, in the case of a chair position determined by a program but which can be corrected manually, a renewed correction can be omitted if this corrected chair position, that is to say which deviates from the program, can be done in the meantime, e.g. other programs, was left, but should then be started again.
  • a control device of the type mentioned at the outset in that a logic circuit with a pre-set memory is present, in which the actual values resulting from correction by actuation of the correction switching elements are stored as pre-set values, that one combined with one of the program selection keys Call button is available, the first time the pre-setpoints are stored in the pre-set memory that when you press this call button again, the pre-setpoints are entered in a comparator, where they are compared with the current actual values and that the logic circuit with the adjusting devices of the parts of the chair to be adjusted is electrically switched so that when the call button is pressed for the first time, control signals in the sense of an adjustment of the chair into the position defined by the program and again ten, second actuation of this key control signals in the sense of an adjustment of the chair in the previously set position corresponding to the pre-setpoints are given.
  • the chair preselected by a program and readjusted by hand can also be moved back to the previously corrected and accordingly optimally adjusted position even in the case of a chair position that has been changed in the meantime by another program, the pre-setpoints being stored when a program selection button is actuated .
  • FIG. 1 shows a dental treatment chair in a schematic representation from the side
  • Figure 2 is a schematic diagram of the control device for adjusting the seat height of the chair shown in Figure 1.
  • FIG. 1 shows a schematic representation of a dental treatment chair seen from the side.
  • the chair consists essentially of a base part 1, to which one end of a parallelogram support arm 2 is articulated in a known manner, the other end of which is mounted on a support 3 for a seat 4 and a backrest 5.
  • Seat 4 and backrest 5 together form the upper part of the chair, which can be adjusted in height by means of the parallelogram support arm 2, for example, in the two positions I and II indicated by dashed lines.
  • An electric motor-driven spindle drive 6 with a spindle arranged diagonally between two articulation points of the parallelogram arm 2 is provided as the adjusting device.
  • the associated drive motor 7 is accommodated outside the parallelogram support arm in a housing of the base part 1. The torque of the motor 7 is transmitted to the spindle via V-belts 8 and an intermediate shaft 9.
  • the seat support 3 there is also a program control device designated 10, which is described below with reference to FIG. 2 using the example of the adjustment or adjustment of the lifting height of the seat.
  • the inclination of the backrest can also be adjusted by means of a further drive motor provided at a suitable location and a common longitudinal displacement of seat 4 and backrest 5.
  • a correction switch in the form of a toggle switch 11 is arranged on the side of the backrest, with which the drive motor 7 can be switched on in one or the other direction of rotation, depending on the toggle position of the switch.
  • the switch 11 has a defined rest position in both switching directions, i.e. after releasing the actuator, the switch always returns to its rest position. In this rest position, the circuit of the drive motor (7) is interrupted. With the switch 11, the seat height can therefore be individually adjusted independently of the control relating to fixed programs, which will be explained in more detail below. If there are other drives, e.g. for tilting the backrest and longitudinally displacing the upper part of the chair, other such correction manual switches are of course provided for these drives.
  • two program selection keys are designated, with which two (different) fixed chair positions for the seat height (and possibly inclination of the backrest or longitudinal displacement of the seat) can be called up.
  • a program is entered via the button 14.
  • 15 denotes a memory call button, with which a fixed (third) program can be called up on the one hand, but on the other hand the chair is moved to a position previously set by program and manual correction using the switches 11 can be reduced.
  • the control device and the mode of operation of the combination key 15 are explained in more detail with reference to FIG.
  • the key 15 is connected to a flip-flop 16, the two outputs of which lead to a logic circuit 17.
  • the setpoint of the permanently set program which can be called up by the button 15, is set in a setpoint memory 18 (RAM). If the button 15 is pressed for the first time, the flip-flop switches to the one switching position, as a result of which the setpoint generator 18 receives the command. enter its value into a comparator 19, where it is compared with the actual values from an actual value counter 20.
  • the actual value counter 20 is clocked by the drive spindle of the drive motor 7 and counts forwards or backwards depending on the direction of rotation of the motor.
  • a pre-set memory is designated by 21, in which the actual value from the actual value counter 20 is stored when the button 15 is first pressed. If the key 15 is pressed a second time without an input being made in the meantime, the logic circuit 17 gives the pre-set memory 21 the command to supply the memory content to the comparator 19 via the command line 22. The comparator 19 then does not compare the setpoint from the setpoint generator 18, but rather that from the pre-setpoint memory 21 with the actual value from the actual value counter 20 and, depending on whether the values are the same or a difference, gives a switching command to the drive motor 7, which then, for example if there is a difference, switch the motor on in one or the other direction of rotation.
  • the flip-flop 16 stores whether the memory key 15 is pressed for the first or the second time. When the button 15 is pressed a second time, the flip-flop 16 is reset to zero via a feedback line (23).
  • An external memory for the actual values is designated by 24, which is battery-buffered and constantly the actual value coming from the actual value counter 20 saves values. This ensures that the chair remains functional even in the event of a power failure.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP81102504A 1980-04-18 1981-04-02 Steuereinrichtung für einen zahnärztlichen Behandlungsstuhl Expired EP0038451B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3015070 1980-04-18
DE19803015070 DE3015070C2 (de) 1980-04-18 1980-04-18 Steuereinrichtung für einen zahnärztlichen Behandlungsstuhl

Publications (2)

Publication Number Publication Date
EP0038451A1 EP0038451A1 (de) 1981-10-28
EP0038451B1 true EP0038451B1 (de) 1986-11-12

Family

ID=6100432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102504A Expired EP0038451B1 (de) 1980-04-18 1981-04-02 Steuereinrichtung für einen zahnärztlichen Behandlungsstuhl

Country Status (3)

Country Link
EP (1) EP0038451B1 (enrdf_load_stackoverflow)
JP (1) JPS56163655A (enrdf_load_stackoverflow)
DE (1) DE3015070C2 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525832B1 (fr) * 1982-04-23 1986-05-09 Carpano & Pons Dispositif de commande d'un moteur electrique
DE3410329A1 (de) * 1984-03-21 1985-09-26 Emil U. Adolf Becker Gmbh & Co Kg, 6349 Sinn Antriebsvorrichtung, beispielsweise fuer die verstellung von krankenbetten
DE59009354D1 (de) * 1990-12-19 1995-08-03 Siemens Ag Zahnärztlicher Patientenstuhl.
DE4305939A1 (de) * 1993-02-11 1994-08-18 Thomas Karl Moebel Sitz- oder Liegemöbel, insbesondere Bett mit Rahmen, sowie Verfahren zu dessen Herstellung
KR100518908B1 (ko) * 2001-06-08 2005-10-06 이종신 신경망을 이용한 의료용 의자 및 그 제어 방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000735A1 (de) * 1977-08-11 1979-02-21 Siemens Aktiengesellschaft Einrichtung zur Steuerung eines motorisch verstellbaren zahnärztlichen Behandlungsstuhles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52151291A (en) * 1976-06-11 1977-12-15 Taiko Iryoki Seisakusho Kk Chair for netal treatment
DE2746630A1 (de) * 1977-10-17 1979-04-26 Koepp Elektronik Gmbh Elektrische steuerschaltung zur lageeinstellung eines aerztlichen behandlungsstuhles oder dergleichen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000735A1 (de) * 1977-08-11 1979-02-21 Siemens Aktiengesellschaft Einrichtung zur Steuerung eines motorisch verstellbaren zahnärztlichen Behandlungsstuhles

Also Published As

Publication number Publication date
DE3015070A1 (de) 1981-10-22
EP0038451A1 (de) 1981-10-28
DE3015070C2 (de) 1986-07-10
JPS56163655A (en) 1981-12-16
JPS633622B2 (enrdf_load_stackoverflow) 1988-01-25

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