EP0345229A2 - Stuhl für den medizinische Verwendung, insbesondere für die Zahnheilkunde - Google Patents

Stuhl für den medizinische Verwendung, insbesondere für die Zahnheilkunde Download PDF

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Publication number
EP0345229A2
EP0345229A2 EP89830213A EP89830213A EP0345229A2 EP 0345229 A2 EP0345229 A2 EP 0345229A2 EP 89830213 A EP89830213 A EP 89830213A EP 89830213 A EP89830213 A EP 89830213A EP 0345229 A2 EP0345229 A2 EP 0345229A2
Authority
EP
European Patent Office
Prior art keywords
seat
chair
horizontal
articulated
angled
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Withdrawn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
EP89830213A
Other languages
English (en)
French (fr)
Other versions
EP0345229A3 (de
Inventor
Franco Castellini
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.)
Castellini SpA
Original Assignee
Castellini SpA
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 Castellini SpA filed Critical Castellini SpA
Publication of EP0345229A2 publication Critical patent/EP0345229A2/de
Publication of EP0345229A3 publication Critical patent/EP0345229A3/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Withdrawn legal-status Critical Current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
    • A61G15/02—Chairs with means to adjust position of patient; Controls therefor

Definitions

  • the invention relates to a chair for medical use in general, and for use in dentistry in particular.
  • the art field of medical appliances, and more in particular, of dental surgery appliances embraces chairs that can be adjusted to different postural positions as and when required; in addition to the numerous positions called for in routine medical practice, these include Trendelenburg's position, so-called, a reclining posture in which the legs of the patient are raised above the level of his (or her) head, and which ensures a freer flow of blood to the head in conditions where the brain may be starved of oxygen.
  • Chairs in current use that are capable of assuming the Trendelenburg position consist in a base, a seat supported by the base, and a back articulated with the seat, and offer three basic adjustments: -of the seat, which can be raised and lowered to suit the height of the patient; -of the back, which can be angled in relation to the seat to arrange the body of the patient (and more especially the head, in the case of dentistry) in the position required by the practitioner; -of seat and back together, which can be rotated or tilted fully into the Trendelenburg position.
  • the chairs in question are particularly suitable for dentistry, given that the practitioner is able to manoeuvre the patient from the sitting to the supine position as and when necessitated by the type of treatment being carried out.
  • the object of the invention is to provide a chair that is capable of reclining into the Trendelenburg position, simple in construction and operation, and therefore economical.
  • a reclining chair as characterized in the appended claims, which consists in a base, a seat supported by the base, and a back articulated with the seat, wherein the seat is angled down toward the back away from the horizontal, and adjustable for height only, whilst the back is adjustable through at least three positions, of which one lies below the horizontal and coincides with Trendelenburg's position.
  • the main advantage of the chair disclosed is that of its simple construction and operation.
  • the chair according to the invention is of the type consisting in a base 3, a seat 1 supported by the base, and a back 2 articulated with the seat about a pivot 22.
  • the seat 1 is carried by the base 3 on a pair of parallelogram or quadrilateral linkages 6 located one at either side of the base.
  • Means by which to adjust the height of the seat 1, consisting in a fluid power cylinder 5, are installed internally of the base 3, connected to the base on the one hand and the quadrilateral linkages 6 on the other.
  • the structure of the chair back 2 incorporates a rigidly associated appendage 7 at the bottom end, affording a pivot 8a to which one end of a second fluid power cylinder 8 is hinged, the remaining end of the cylinder being anchored hingedly to a pivot 8b afforded by the structure of the seat 1.
  • the seat 1 is angled with respect to the horizontal x-x through an angle denoted ⁇ , sloping downwards toward the chair back 2; as to movement, the seat 1 can be simply raised or lowered (see arrow denoted f1), which signifies that the quadrilateral linkage 6 will be proportioned such that no rotational movement is described by the seat 1 in the vertical plane when shifted by the fluid power cylinder 5.
  • the back 1, on the other hand, is articulated to the seat 1 in such a way as to assume at least three basic positions: one substantially upright, another substantially horizontal, and a further position angled downwards and below the horizontal.
  • the back 2 is adjustable through a given arc (see arrow f2) by operation of the second fluid power cylinder 8, and can be set in almost any position between the upright limit (illustrated in bold line in fig 2) and the below-horizontal Trendelenburg position (bold line in fig 1).
  • the appendage 7 and the relative cylinder 8 will be proportioned such that, in the lower limit position, the structure of the back 2 is inclined away from the horizontal through an angle ⁇ that brings it into coplanar alignment with the seat 1.
  • the angular distance denoted ⁇ must be calculated such that with the back 2 tilted down below the horizontal, the legs (or at very least the knees) of the patient, will be raised above head height; in short, the angle ⁇ is such that the lower limit position coincides with Trendelenburg's position.
  • the angle of the seat 1 can be selected or altered either by altering the angle ⁇ of the supporting structure and/or by appopriate modification of the upholstery conventionally fitted to furniture of the type in question, for example, increasing the depth of the cushion material selectively between the back 2 and the knee area.
  • the chair might also be provided with a foot rest 4 articulated by way of a hinge 9 to the end of the seat 1 farthest from the back 2 and affording a plurality of stable settings, each at a given angle in relation to the seat 1, which would be selected in either infinitely variable or discrete steps (using a clamp-and-release or jacking mechanism), by working the rest 4 itself into a position that brings the hinge 9 to the required setting.
  • a chair thus embodied, the normal sitting position assumed by a patient will be with feet below knee height, though the knees can be raised up above the level of the patient's head when the back 2 is reclined fully below the horizontal, as described above.
  • the chair described and illustrated will be seen to be extremely simple and economical in embodiment, whilst affording all the operating positions of essential importance; furthermore, the number of controls is limited to two, and the movements can be produced to advantage by way of a single lever shifted through two directions disposed at right angles to one another.

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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)
EP89830213A 1988-05-31 1989-05-16 Stuhl für den medizinische Verwendung, insbesondere für die Zahnheilkunde Withdrawn EP0345229A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT348488 1988-05-31
IT03484/88A IT1220388B (it) 1988-05-31 1988-05-31 Poltrona per uso medico,in particolare per uso odontoiatrico

Publications (2)

Publication Number Publication Date
EP0345229A2 true EP0345229A2 (de) 1989-12-06
EP0345229A3 EP0345229A3 (de) 1990-07-11

Family

ID=11108243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830213A Withdrawn EP0345229A3 (de) 1988-05-31 1989-05-16 Stuhl für den medizinische Verwendung, insbesondere für die Zahnheilkunde

Country Status (3)

Country Link
EP (1) EP0345229A3 (de)
JP (1) JPH0249656A (de)
IT (1) IT1220388B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337300A1 (de) * 1993-11-02 1995-05-04 Castro Moebel Massari & Neuman Entbindungsbett
ES2125745A1 (es) * 1994-12-22 1999-03-01 Salo Gaspar Estrada Silla clinica plegable para pacientes

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292262A (en) * 1991-10-18 1994-03-08 Yazaki Corporation Electrical connector with rear holder
JP3216779B2 (ja) * 1995-02-23 2001-10-09 矢崎総業株式会社 コネクタにおける端子金具の不完全挿入矯正方法及び矯正用治具
JP3188380B2 (ja) * 1995-06-30 2001-07-16 矢崎総業株式会社 リヤホルダー付きコネクタ
JPH09147957A (ja) * 1995-11-22 1997-06-06 Yazaki Corp 二重係止機構を備えたコネクタ
JP3341818B2 (ja) 1997-08-19 2002-11-05 矢崎総業株式会社 リヤホルダ装着装置及びリヤホルダ装着方法
JP3341819B2 (ja) 1997-10-09 2002-11-05 矢崎総業株式会社 端子固定具付コネクタ
JP4644776B2 (ja) * 2008-05-09 2011-03-02 株式会社亘陽 医療用チェアベッド
JP6006540B2 (ja) * 2012-06-15 2016-10-12 株式会社ホワイトベース 医療用チェア

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702175A (en) * 1925-02-12 1929-02-12 Electro Dental Mfg Company Dental chair
US2558143A (en) * 1946-07-02 1951-06-26 Ritter Co Inc Medical practice chair
DE2809269B1 (de) * 1978-03-03 1979-08-23 Sven Dr Lundin Medizinischer Behandlungsstuhl insbesondere Zahnarztstuhl
DE3438617A1 (de) * 1984-10-22 1986-04-24 Dieter 7519 Eppingen Glatzel Dialysestuhl

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834140B2 (ja) * 1979-12-07 1983-07-25 株式会社 帝国デンタル製作所 歯科用椅子
JPS5845570A (ja) * 1981-09-11 1983-03-16 Matsushita Electric Ind Co Ltd 掃引信号発生器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702175A (en) * 1925-02-12 1929-02-12 Electro Dental Mfg Company Dental chair
US2558143A (en) * 1946-07-02 1951-06-26 Ritter Co Inc Medical practice chair
DE2809269B1 (de) * 1978-03-03 1979-08-23 Sven Dr Lundin Medizinischer Behandlungsstuhl insbesondere Zahnarztstuhl
DE3438617A1 (de) * 1984-10-22 1986-04-24 Dieter 7519 Eppingen Glatzel Dialysestuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337300A1 (de) * 1993-11-02 1995-05-04 Castro Moebel Massari & Neuman Entbindungsbett
ES2125745A1 (es) * 1994-12-22 1999-03-01 Salo Gaspar Estrada Silla clinica plegable para pacientes

Also Published As

Publication number Publication date
IT1220388B (it) 1990-06-15
EP0345229A3 (de) 1990-07-11
JPH0249656A (ja) 1990-02-20
IT8803484A0 (it) 1988-05-31

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