US3731383A - Dental chair - Google Patents

Dental chair Download PDF

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Publication number
US3731383A
US3731383A US00121730A US3731383DA US3731383A US 3731383 A US3731383 A US 3731383A US 00121730 A US00121730 A US 00121730A US 3731383D A US3731383D A US 3731383DA US 3731383 A US3731383 A US 3731383A
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US
United States
Prior art keywords
chair
seat
combination according
dentist
bar
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 - Lifetime
Application number
US00121730A
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English (en)
Inventor
K Hayashi
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.)
Kk Morita Seisakusha ja
MORITA SEISAKUSHA KK
Original Assignee
MORITA SEISAKUSHA KK
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 MORITA SEISAKUSHA KK filed Critical MORITA SEISAKUSHA KK
Application granted granted Critical
Publication of US3731383A publication Critical patent/US3731383A/en
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Expired - Lifetime 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
    • A61G15/14—Dental work stands; Accessories therefor

Definitions

  • Indental treatment when the dentist performs treatment while sittingon a chair near the head of a patient lying on an operating chair, it is advisable from the point of view of human engineering in making treating operation easy that the oral cavity of the patient'should be positioned between the. hands and knees of the dentist sitting on the chair.
  • the dentist performs treatment not by his hands along but also by the help of an instrument held or gripped by his hand. Therefore, unless the instruments are held at a position within easy reach of the dentist sitting on a chair, it will be'difficult to ensure of convenience and easiness of treating operation from the viewpoint of human engineering.
  • the dentist In dental treatment, the dentist must move freely from behind the head of the patient to the right-hand side thereof as the portion to be treated or treating operation to be. done requires. Such movement, however, must neither interfere with the treating operation nor bringthe instruments into contact with the operating chair or the patient thereon.
  • The. chair of this invention is characterized by that an instrument holding. structure or wing for holding dental: instruments thereon is provided at one side of the chair. body and is swingable relative to the chair body, and: also that as the chair is moved, the wing automaticallyswings relative. to the chair body.
  • FIG. 1 is a perspective view of one. embodiment of the invention
  • FIG. 2 is a top plan view of FIG. 1., with a patient on an operating chair schematically shown to illustrate the relation to the chair;
  • FIG. 3 is a top plan view similar to FIG. 2 but showing another embodiment wherein the wing is automatically turned in ganged relation to the movement of the chair;
  • FIGS. 4 to 6 are sectional, views showing how the instruments are held.
  • the. reference numeral 1 generally designates a chair body for a dentist to be seated, in, which comprises a support column 3, a. rod 4 vertically movable relative to the column 3, a. support 5 secured to the rod, a shell or cover 5 and a seat 6 secured to the support 5.
  • the numeral 81 designates a foot controller which is operated by the foot of a dentist toscontrol the rotation of the rotary dental. instruments to be described later.
  • the reference numeral 9 is a bar which connects the lower end of the column 3 and the foot controller 8 and which is pivoted intermediate its length by a pin to, say, the floor of the clinic.
  • the chair When the dentist sitting in the chair turns itas occasions demand during dental treatment, the chair is moved along an arc of a circle having its center on the pivot pin 10.
  • the bar 9 is formed with a slot 1 l in which the pivot pin 10 engages, so that the bar is also movable longitudinally within the limit of the length of the slot 11. Therefore, it is possible for the dentist to move the bar 9 longitudinally to bring the chair into a position most suitable for the treatment, without changing the relative position of the chair and the foot controller 8.
  • the connecting bar 9 encloses electrical wires, not shown, connecting the foot controller 8 and the dental instruments.
  • the pivot pin 10 is positioned directly below the oral cavity 14 of a patient 13 lying on an operating chair 12, as shown in FIG. 2.
  • a wing 21 for holding dental instruments 22 is connected by a pivot shaft 23 to the right-hand side of the chair body 1, as viewed from the dentist seated therein, so as to be swingable relative thereto.
  • the wing 21 is provided with a plurality of holes 24 into each of which a dental instrument has its one end portion inserted to be held therein, as shown in FIGS. 4 to 6.
  • a mechanism for paying out the hose connected to each of the dental instruments is enclosed in the chair body 1.
  • a tray 25 may be attached to the wing 21, if desired.
  • the instruments 22 are always positioned near the chair 1, and the relative position of the instruments and the dentist on the seat 6 remains much the same.
  • the instruments are always within easy reach of the dentist seated in the chair 1. Since the .wing 21 for holding the instruments is swingable relative to the chair 1, when the chair is moved from the position at the back of the patient to the right-hand side thereof, the dentist can move the wing 21 away from the chair body 1, thereby preventing the wing from hitting against the operating chair 12 or the patient 13 thereon.
  • FIG. 3 shows an arrangement that enables such automatic swinging oflthe wing 21.
  • a lever 31 has its one end connected to the bottom of the wing 21 and its opposite end pivoted to the floor by a pin 32 at a different position from the pin 10. With this arrangement, when the chair 1 is positioned at the back of the patient, the wing is held in its position nearest to the chair body 1.
  • the wing 21 is turned about the pin 32 so that due to the displacement of the pin 10 and 32 the wing 21 is turned clockwise about the shaft 23 relative to the chair body 1', As a result the wing 21 is held away from the operating chair 12 or the patient 13 and is never brought into contact therewith.
  • the chair for the dentist to be seated in is provided at one side thereof with a swingable wing for holding dental instruments, the dentist can easily reach for the instrument without very much moving his body and consequently easily perform treatment.
  • the wing is swung away from the operating chair or the patient thereby preventing the patient from feeling uneasy.
  • a reclining or semireclining chair for a dental patient which chair has a support thereon onwhich the patient rests his head so that the cavity of his mouth substantially coincides with a given vertical line
  • a seat for the dentist which is shiftably mounted adjacent the chair
  • guide means interconnected with the seat and pivotally mounted to rotate about the line to maintain the seat within a prescribed range of radial distance about the line, as the seat is shifted about the chair
  • a carrier for the dentists instruments which is pivotally connected to the seat, adjacent one side thereof, and conjointly shiftable with the seat about the chair, and means operatively associated with the seat and the chair to cause the carrier to rotate in relation to the seat, when the seat is shifted in relation to the chair, whereby as the one side of the seat approaches the chair, the carrier is pivoted in relation to the seat to avoid hitting the chair.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
US00121730A 1970-03-23 1971-03-08 Dental chair Expired - Lifetime US3731383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45024225A JPS5037947B1 (enExample) 1970-03-23 1970-03-23

Publications (1)

Publication Number Publication Date
US3731383A true US3731383A (en) 1973-05-08

Family

ID=12132314

Family Applications (1)

Application Number Title Priority Date Filing Date
US00121730A Expired - Lifetime US3731383A (en) 1970-03-23 1971-03-08 Dental chair

Country Status (2)

Country Link
US (1) US3731383A (enExample)
JP (1) JPS5037947B1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6406294B1 (en) 1999-11-24 2002-06-18 Bell Dental Products, Llc Self contained dental chair with integrated compressor and vacuum pump and methods
US8926011B2 (en) 2012-02-23 2015-01-06 Milton A. CLEMENT Dental patient seating apparatus with head rest and tool staging arm and related methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424729A (en) * 1945-06-23 1947-07-29 Juel L Andreasen Dentist's mobile equipment unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424729A (en) * 1945-06-23 1947-07-29 Juel L Andreasen Dentist's mobile equipment unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6406294B1 (en) 1999-11-24 2002-06-18 Bell Dental Products, Llc Self contained dental chair with integrated compressor and vacuum pump and methods
US8926011B2 (en) 2012-02-23 2015-01-06 Milton A. CLEMENT Dental patient seating apparatus with head rest and tool staging arm and related methods

Also Published As

Publication number Publication date
DE2107041A1 (de) 1971-10-28
DE2107041B2 (de) 1976-01-22
JPS5037947B1 (enExample) 1975-12-05

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