EP0701806A1 - Kopfstütze für zahnärtzlichen Stuhl - Google Patents

Kopfstütze für zahnärtzlichen Stuhl Download PDF

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Publication number
EP0701806A1
EP0701806A1 EP95830372A EP95830372A EP0701806A1 EP 0701806 A1 EP0701806 A1 EP 0701806A1 EP 95830372 A EP95830372 A EP 95830372A EP 95830372 A EP95830372 A EP 95830372A EP 0701806 A1 EP0701806 A1 EP 0701806A1
Authority
EP
European Patent Office
Prior art keywords
headrest
control device
locking mechanism
plate
fastened
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.)
Withdrawn
Application number
EP95830372A
Other languages
English (en)
French (fr)
Inventor
Antonio Baldissera
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.)
STERN WEBER Srl
Original Assignee
STERN WEBER Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by STERN WEBER Srl filed Critical STERN WEBER Srl
Publication of EP0701806A1 publication Critical patent/EP0701806A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125—Head-rests

Definitions

  • the present invention relates to production of chairs used for dental treatment.
  • Some chairs have the headrest supported by a mounting post slidingly friction-coupled with the backrest for height adjustment.
  • the headrest is articulated to the upper end of an arm hinged with its bottom end to the wings of a fork shaped member.
  • the shank of the fork shaped member slides with friction in a socket specially made in the chair backrest.
  • the headrest can be tilted according to vertical planes, and then it is possible to change the angle of slant thereof.
  • the positions that the headrest can take are the ones allowed by the related articulating connections, and do not always match the actual position taken time by time by the patient's head.
  • Patent Application No. BO92U 000046 of the same Applicant, avoids this disadvantage and discloses a headrest that is articulated to the back of the chair by connection means equipped with a spherical element, inserted in a related recess of a mechanism for locking the same headrest.
  • the spherical coupling allows the headrest to follow anatomically all the head movements, thus assuring a comfortable rest to the head in all its positions.
  • the headrest is locked in a each time selected working position by suitable mechanical means, e.g. operated by a lever, aimed at clamping the said connection means.
  • the object of the present invention is to improve the above mentioned headrest, so as to facilitate locking and releasing of the connection means of the backrest.
  • the headrest 1 of a dentist chair is fastened to the backrest 2 of the chair by a locking mechanism 3.
  • the locking mechanism 3 includes a retaining device 4 formed by two strips or plates 5 and 6 that are connected to each other at both ends and which define, at their ends, a first and a second transversal recess 7 and 8.
  • a pin integral with the headrest, is inserted into the first recess 7.
  • a spherical element 9, integral with a support gudgeon 10, is inserted into the second recess 8.
  • the gudgeon 10 is connected, in cantilever fashion, to a protrusion 11 formed by the head of a mounting post 12, inserted and frictionally sliding in a suitable socket 13 specially made in the backrest 2.
  • the locking mechanism 3 features a pneumatic control device 14, aimed at clamping the plates 5, 6 of the retaining device 4 so as to lock the articulation means inside the respective recesses 7, 8.
  • control device 14 has a member 15 that forms a cylindrical chamber 16, in which a piston 17 sealably slides.
  • the member 15 is fastened to the first plate 5 of the retaining device 4 by a hollow tubular tang 18.
  • a free end of the stem 19 of the piston 17, that passes through the tubular tang 18, is fastened to the second plate 6 of the retaining device 4 by means of a nut 20.
  • Angular position of the member 15 of the control device 14 with respect to the plate 5 is set by a pin 21 that prevents any reciprocal rotation thereof.
  • the piston 17 is linked with the member 15 by means of another pin 22.
  • connection 23 of an air supplying duct 24 leading to a suitable delivery of compressed air is linked with the cylindrical chamber 16.
  • a two-way valve 25, operated by a push button 26, controls the supplying duct 24.
  • the push button 26 is situated at the back of the headrest 1.
  • this push button can be situated in any other suitable position that allows the dentist to operate it easily. It is also possible to activate the valve 25 by means of a pedal button or the like.
  • the piston 17 is pushed by the pressure created inside the cylindrical chamber 16, due to the air supplied by the duct 24.
  • this pressure is suitably set so as to supply a pre-determined suitable pressing force.
  • the piston 17 has wide diameter, and is in fact in disk-like form, so as to present bigger surface for pneumatic pressure and, consequently, bigger pressing force without necessity of increasing the pressure.
  • Axial movements of the piston 17 are relatively short.
  • the orientation of the headrest is changed by operating the push button 26 of the valve 25, so as to connect the cylindrical chamber 16 of the control device 14 with a discharge outlet thus allowing the air to come out of the chamber.
  • the piston 17 can return inside the cylindrical chamber 16, as a result of the elastic reaction movement of the plates 5,6, which move away from each other, provoking releasing of the articulation means of the headrest 1 (fig. 2b).
  • the headrest 1 can pivot about the axis of the pin connected with the seat 7 and follow, due to the spherical element 9, all the movements of the patient's head.
  • the described technical solution facilitates locking and releasing of the means connecting the headrest to the chair back.
  • the releasing of the headrest 1 does not require any effort of the dentist, since it is operated by the button 26 of the valve 25.
  • the pneumatic control allows for suitable adjustment of the force clamping the locking mechanism 3.
  • Hydraulic, electric or electromagnetic control means can be used instead of the pneumatic means, for locking and releasing the means connecting the headrest to the chair back.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (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)
EP95830372A 1994-09-15 1995-09-08 Kopfstütze für zahnärtzlichen Stuhl Withdrawn EP0701806A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO940156 IT232067Y1 (it) 1994-09-15 1994-09-15 Poggiatesta perfezionato, in particolare per poltrone per uso odontoiatrico
ITBO940156U 1994-09-15

Publications (1)

Publication Number Publication Date
EP0701806A1 true EP0701806A1 (de) 1996-03-20

Family

ID=11339697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830372A Withdrawn EP0701806A1 (de) 1994-09-15 1995-09-08 Kopfstütze für zahnärtzlichen Stuhl

Country Status (2)

Country Link
EP (1) EP0701806A1 (de)
IT (1) IT232067Y1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070169A1 (de) 2000-03-22 2001-09-27 Kaltenbach & Voigt Gmbh & Co. Medizinischer oder dentalmedizinischer behandlungsstuhl
DE102007006045A1 (de) 2007-02-02 2008-08-07 Sirona Dental Systems Gmbh Kopfstützenanordnung
IT202200005744A1 (it) 2022-03-23 2023-09-23 Miglionico Srl Sistema di regolazione del poggiatesta di una poltrona a uso medico

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE469771C (de) * 1928-12-21 Beldam Werke Kopfstuetzenhalter fuer Operationsstuehle, Friseurstuehle u. dgl.
DE1227189B (de) * 1962-06-27 1966-10-20 Louis Mahuteaux Einstellbare Kopfstuetze mit Stativ, insbesondere fuer aerztliche Einrichtungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE469771C (de) * 1928-12-21 Beldam Werke Kopfstuetzenhalter fuer Operationsstuehle, Friseurstuehle u. dgl.
DE1227189B (de) * 1962-06-27 1966-10-20 Louis Mahuteaux Einstellbare Kopfstuetze mit Stativ, insbesondere fuer aerztliche Einrichtungen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070169A1 (de) 2000-03-22 2001-09-27 Kaltenbach & Voigt Gmbh & Co. Medizinischer oder dentalmedizinischer behandlungsstuhl
EP1138306A1 (de) 2000-03-22 2001-10-04 Kaltenbach & Voigt Gmbh & Co. Medizinischer oder dentalmedizinischer Behandlungsstuhl oder eine Kopfstütze für einen solchen Behandlungsstuhl
US6520585B1 (en) 2000-03-22 2003-02-18 Kaltenbach & Voight Gmbh & Co. Medical or dental-medical treatment chair or a head support for such a treatment chair
US7032975B2 (en) 2000-03-22 2006-04-25 Kaltenbach & Voigt Gmbh & Co. Medical or dental treatment chair
DE102007006045A1 (de) 2007-02-02 2008-08-07 Sirona Dental Systems Gmbh Kopfstützenanordnung
IT202200005744A1 (it) 2022-03-23 2023-09-23 Miglionico Srl Sistema di regolazione del poggiatesta di una poltrona a uso medico

Also Published As

Publication number Publication date
IT232067Y1 (it) 1999-08-16
ITBO940156U1 (it) 1996-03-15

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