EP2802241B1 - A comfortable orthopedic chair for prevention of spinal diseases - Google Patents

A comfortable orthopedic chair for prevention of spinal diseases Download PDF

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Publication number
EP2802241B1
EP2802241B1 EP11794235.9A EP11794235A EP2802241B1 EP 2802241 B1 EP2802241 B1 EP 2802241B1 EP 11794235 A EP11794235 A EP 11794235A EP 2802241 B1 EP2802241 B1 EP 2802241B1
Authority
EP
European Patent Office
Prior art keywords
seat
occupant
concave
chair
buttocks
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.)
Active
Application number
EP11794235.9A
Other languages
German (de)
English (en)
French (fr)
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EP2802241A1 (en
Inventor
Loan Pham Thi Kim
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to RS20190125A priority Critical patent/RS58330B1/sr
Priority to SI201131652T priority patent/SI2802241T1/sl
Priority to PL11794235T priority patent/PL2802241T3/pl
Priority to PT11794235T priority patent/PT2802241T/pt
Publication of EP2802241A1 publication Critical patent/EP2802241A1/en
Application granted granted Critical
Publication of EP2802241B1 publication Critical patent/EP2802241B1/en
Priority to HRP20190171TT priority patent/HRP20190171T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions

Definitions

  • the present invention generally relates to a chair, and in particular, to an orthopedic chair that is comfortable to use while being able to prevent spinal diseases including lumbar kyphosis, thoracic kyphosis, sacrum and coccyx misalignment, and herniated disc.
  • Document EP 0698 359 A1 discloses a chair, which has short legs and a seat-surface that is raised on both sides and if necessary at the front. The front is widened. The armchair is adapted to the sitter's body-shape. The back of the seat surface has a raised part in the middle, forming an extension to the sitter's coccyx. The back-rest has an outward bulge positioned near the sitter's fourth and fifth lumbar vertebra. The seat surface may also have inward bulges near the two cheeks of the sitter's bottom.
  • Document US 3 740 096 A teaches an orthopedic seat comprising a lower substantially horizontal seat portion and an upper substantially vertical back portion rigidly joined to the seat portion.
  • the lower portion is shaped to act as a base support for the pelvis and sacrum which, in turn, will act as a base for the lumbar dorsal and cervical vertebrae, and the back portion is designed to properly position the vertebrae of a person seated on the lower portion to correct them automatically.
  • DE 202 18 142 U1 is about a reclining seat system that has hinged panels supported on a base.
  • the system has configurations comprising a settee type of seat or a flat, fully reclined bed.
  • the panels are linked by hinges with the centre panels secured to the base via a vertical axis, to swing between the bed and settee alignments.
  • the system is also disclosed in a further embodiment having a reclining seat back, a horizontal seat and a sloping leg support.
  • DE 11 17 274 B also discloses a Seat and backrest construction adapted to the human body.
  • US Pat. No. 5,630,648 describes a chair with an adjustable seat back so that an occupant can achieve a 135-degree sitting posture.
  • the occupant's buttocks tend to glide forwardly, making the occupant have to put his feet on the ground at all time to bear the gravity of his body to keep his buttocks in place. Given that, it is not comfortable to sit on the chair.
  • Tilt SeatTM Eco chair is another invention, in which the seat is tilted forwardly so that an occupant can obtain a 135-degree sitting posture.
  • the chair does not have a seat back, the occupant actually tends to bend forward, potentially leading to spinal diseases such as herniated discs.
  • the present invention provides an orthopedic chair that is comfortable to sit on and is able to prevent spinal diseases.
  • the said orthopedic chair comprises an ergonomic seat and an ergonomic seat back.
  • the said seat is mounted on a support that can include well-known height adjustment means; the support will not be described herein as it is not included in the invention.
  • the said seat is made of non-resilient materials and has a shape that matches the natural contours of an occupant's buttocks, thighs, and upper legs.
  • the said seat has its concave backward portion connect to the concave lowest portion of the said seat back, creating a dedicated concave zone that contours the occupant's buttocks closely but comfortably.
  • In the center of the seat's concave backward portion is a small hump that contours tightly the occupant's sacrum and coccyx if his buttocks are fitting inside the dedicated concave zone.
  • the forward portion of the said seat has a wide W-shape that contours the occupant's upper legs comfortably.
  • the two concave zones of the seat's W-shaped forward portion contours the back sides of the occupant's upper legs.
  • the center zone of the seat's W-shaped forward portion is convex and has two functions. The first function is to prevent the occupant's buttocks from gliding off the seat, keeping the buttocks stay in the dedicated concave zone. The second function is to encourage the occupant to fit his buttocks inside the dedicated concave zone, as sitting on the convex center zone of the W-shaped forward portion is not comfortable.
  • the seat is designed to be inclined backwardly in such a way that, when the occupant intentionally sits on the seat's W-shaped forward portion, his buttocks, pushed by the gravity force of his body, will gradually glide backward and fit themselves into the said dedicated concave zone eventually.
  • the left side and right side of the seat's W-shaped forward portion are convex so that they contour the outer sides of the occupant's upper legs. Moreover, the convex left and right sides of the seat's forward portion keep the upper legs in a correct position, i.e. inside the two concave zones of the seat's W-shaped forward portion, since putting the legs on top of the two convex left and right sides is not comfortable.
  • the said seat back is also made of non-resilient materials and is ergonomically designed in such a way that it contours the occupant's back.
  • the seat back tilts backward to stay at an angle of 135 degrees to the seat.
  • the said seat back comprises a lowest portion, as already described above, that is concave to contour the occupant's buttocks, a middle portion that is convex to contour the lumbar vertebrae, an upper portion that is concave to contour the thoracic vertebrae, and a headrest on the top.
  • the left and right edges of the seat back are convex to keep the occupant's back from bending left or right.
  • a proper sitting posture is defined as a posture in which the occupant sits on the seat of the said chair in such a way that his buttocks fit inside the dedicated concave zone, his sacrum and coccyx are contoured tightly by the small hump in the center of the seat's concave backward portion, his two upper legs fit inside the two concave zones of the seat's W-shaped forward portion, and his back stays at an angle of 135 degrees to his upper legs and is contoured comfortably by the seat back.
  • less strain is placed on the spinal disks and associated muscles and tendons.
  • the chair help the occupant easily and comfortably maintain an angle of 135 degrees between his back and upper legs over time; in other words, the pelvis stays at an "neutral" position and the shape of the spine is close to the natural S-shape in a standing posture. Since the chair keeps an occupant in a proper sitting posture, it is capable of preventing spinal diseases.
  • the chair maintains substantially equal pressure distribution throughout the surface area of the body that is in contact with the chair, resulting that the occupant feels very comfortable sitting on the chair.
  • the present invention provides an orthopedic chair that is comfortable to sit on and is able to prevent spinal diseases.
  • the said chair 100 comprises a seat 200 and a seat back 300.
  • the said seat 200 is mounted on a support that can include well-known height adjustment means; the support will not be described herein as it is not included in the invention.
  • the said seat 200 is made of non-resilient materials and has a shape that matches the natural contours of an occupant's buttocks, thighs, and upper legs.
  • the said seat has its concave backward portion, consisting of concave zone 205a and concave zone 205b, connect to the concave lowest portion 302 of the said seat back 300, creating a dedicated concave zone 400 as circled in FIG. 3 .
  • the dedicated concave zone 400 contours the occupant's buttocks closely but comfortably.
  • the forward portion of the said seat 200 has a wide W-shape that contours the occupant's upper legs comfortably.
  • the two concave zones 202a and 202b of the seat's W-shaped forward portion contour the back of the occupant's upper legs.
  • the center zone 204 of the seat's W-shaped forward portion i.e. between the two concave zones 202a and 202b, is convex and has two functions. The first function is to snuggle the occupant's thighs comfortably. The second function is to encourage the occupant to fit his buttocks inside the dedicated concave zone 400, as sitting on the convex center zone 204 is not comfortable.
  • the seat 200 is designed to be inclined backwardly in such a way that, when the occupant intentionally sits on the forward portion of the seat 200, his buttocks, pushed by the gravity force of his body, will gradually glide backward and fit themselves into the dedicated concave zone 400 eventually.
  • the left side 203a and the right side 203b of the W-shaped forward portion of the seat 200 are convex so that they contour the outer sides of the occupant's upper legs. Moreover, the left side 203a and the right side 203b encourage the occupant keeps his upper legs in a correct position, i.e. inside the concave zones 202a and 202b, since putting the upper legs on top of the two convex sides 203a and 203b is not comfortable.
  • the said seat back 300 is also made of non-resilient materials and ergonomically designed in such a way that it contours the occupant's back comfortably.
  • the seat back tilts backward to stay at an angle of 135 degrees to the seat, as shown in FIG. 5
  • the seat back 300 comprises a lowest portion 302, as already described above, that is concave to contour the occupant's buttocks, a middle portion 303 that is convex to contour the lumbar vertebrae, an upper portion 305 that is concave to contour the thoracic vertebrae, and a headrest 306 on the top.
  • the left edge 304a and right edge 304b of the seat back 300 are convex to keep the occupant's back from bending left or right.
  • a proper sitting posture is defined as a posture in which the occupant sits on the seat 200 of the said chair 100 in such a way that his buttocks fit inside the dedicated concave zone 400, his sacrum and coccyx are contoured tightly by the small hump 206, his two upper legs fit inside the two concave zones 202a and 202b of the seat's W-shaped forward portion, and his back stays at an angle of 135 degrees to his legs and is contoured comfortably by the seat back 300.
  • the chair 100 keeps an occupant in a proper sitting posture, it is capable of preventing spinal diseases.
  • the chair 100 maintains substantially equal pressure distribution throughout the surface area of the body that is in contact with the chair, resulting that the occupants feels very comfortable sitting on the chair.

Landscapes

  • Orthopedics, Nursing, And Contraception (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP11794235.9A 2011-11-09 2011-11-09 A comfortable orthopedic chair for prevention of spinal diseases Active EP2802241B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
RS20190125A RS58330B1 (sr) 2011-11-09 2011-11-09 Udobna ortopedska stolica za sprečavanje bolesti kičme
SI201131652T SI2802241T1 (sl) 2011-11-09 2011-11-09 Udoben ortopedski stol za preprečevanje bolezni hrbtenice
PL11794235T PL2802241T3 (pl) 2011-11-09 2011-11-09 Wygodny fotel ortopedyczny do profilaktyki chorób kręgosłupa
PT11794235T PT2802241T (pt) 2011-11-09 2011-11-09 Uma cadeira ortopédica confortável para a prevenção de doenças da coluna vertebral
HRP20190171TT HRP20190171T1 (hr) 2011-11-09 2019-01-25 Udobna ortopedska stolica za prevenciju bolesti kralježnice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/054990 WO2013068784A1 (en) 2011-11-09 2011-11-09 A comfortable orthopedic chair for prevention of spinal diseases

Publications (2)

Publication Number Publication Date
EP2802241A1 EP2802241A1 (en) 2014-11-19
EP2802241B1 true EP2802241B1 (en) 2018-11-07

Family

ID=48223205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11794235.9A Active EP2802241B1 (en) 2011-11-09 2011-11-09 A comfortable orthopedic chair for prevention of spinal diseases

Country Status (14)

Country Link
US (1) US20130113264A1 (pt)
EP (1) EP2802241B1 (pt)
CY (1) CY1121277T1 (pt)
DK (1) DK2802241T3 (pt)
ES (1) ES2708725T3 (pt)
HK (1) HK1203788A1 (pt)
HR (1) HRP20190171T1 (pt)
HU (1) HUE043028T2 (pt)
LT (1) LT2802241T (pt)
PL (1) PL2802241T3 (pt)
PT (1) PT2802241T (pt)
RS (1) RS58330B1 (pt)
SI (1) SI2802241T1 (pt)
WO (1) WO2013068784A1 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9332850B2 (en) * 2013-10-18 2016-05-10 Max Krishtul Reversible orthopedic seat cushion
JP6741425B2 (ja) * 2013-11-29 2020-08-19 株式会社 Ｍｔｇ 姿勢保持具
DK2881011T3 (en) * 2013-12-03 2018-10-22 P A S Corp Cushion for chair and chair
US9795218B2 (en) 2013-12-04 2017-10-24 P.A.S. Corporation Cushion for chair and chair
DE202014104828U1 (de) * 2014-10-08 2014-10-27 Aeris Gmbh Stuhl
US9950647B2 (en) * 2015-04-17 2018-04-24 Lagoon Corporation, Inc. Seat form for amusement rides
JP6595295B2 (ja) * 2015-10-14 2019-10-23 株式会社タチエス 車両用シート
US11291307B2 (en) * 2018-04-20 2022-04-05 Ergotech Solutions, Inc. Body support
JP2021023544A (ja) * 2019-08-05 2021-02-22 株式会社ジェイエスピー 着座用クッション体
TWI744193B (zh) * 2021-02-20 2021-10-21 吳國源 骨盆傾斜偵測椅
EP4369989A2 (en) 2021-07-14 2024-05-22 Anthro Form, LLC Support surface
US20230255357A1 (en) * 2022-02-15 2023-08-17 Stephen Lavitol Buttocks elevating auxiliary seat cushioning system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL98570C (pt) * 1957-02-05 1961-07-17
US3740096A (en) * 1971-05-04 1973-06-19 Bridg A Back Inc Orthopedic seat
GB1447121A (en) * 1973-01-23 1976-08-25 Pel Ltd Chair shell
US5630648A (en) 1992-08-27 1997-05-20 Harry C. Sweere Dynamic posture chair
ATE166547T1 (de) * 1994-08-24 1998-06-15 Weiss Friederike Sessel
DE20218142U1 (de) * 2002-11-22 2003-03-13 Stanzwerk Wetter Sichelschmidt GmbH & Co. KG, 58300 Wetter Sitzmöbel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20130113264A1 (en) 2013-05-09
HK1203788A1 (en) 2015-11-06
ES2708725T3 (es) 2019-04-10
DK2802241T3 (en) 2019-01-28
LT2802241T (lt) 2019-02-11
PL2802241T3 (pl) 2019-03-29
WO2013068784A1 (en) 2013-05-16
HUE043028T2 (hu) 2019-08-28
SI2802241T1 (sl) 2019-03-29
HRP20190171T1 (hr) 2019-03-22
CY1121277T1 (el) 2020-05-29
RS58330B1 (sr) 2019-03-29
PT2802241T (pt) 2019-02-07
EP2802241A1 (en) 2014-11-19

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