EP2170125A1 - Ergonomic seat - Google Patents

Ergonomic seat

Info

Publication number
EP2170125A1
EP2170125A1 EP08753860A EP08753860A EP2170125A1 EP 2170125 A1 EP2170125 A1 EP 2170125A1 EP 08753860 A EP08753860 A EP 08753860A EP 08753860 A EP08753860 A EP 08753860A EP 2170125 A1 EP2170125 A1 EP 2170125A1
Authority
EP
European Patent Office
Prior art keywords
seat
ergonomic
seating portion
sitting
back support
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.)
Granted
Application number
EP08753860A
Other languages
German (de)
French (fr)
Other versions
EP2170125B1 (en
Inventor
Waclaw Niedzielski
Katarzyna Czernicka
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.)
LINIA ZDROWIE Niedzielski Czernicka Sp j
Original Assignee
LINIA ZDROWIE Niedzielski Czernicka Sp j
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 LINIA ZDROWIE Niedzielski Czernicka Sp j filed Critical LINIA ZDROWIE Niedzielski Czernicka Sp j
Priority to PL08753860T priority Critical patent/PL2170125T3/en
Publication of EP2170125A1 publication Critical patent/EP2170125A1/en
Application granted granted Critical
Publication of EP2170125B1 publication Critical patent/EP2170125B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 subject of the invention is an ergonomic seat that facilitates correct spinal position of the person sitting thereon, and that simultaneously provides comfort and ergonomic position while seating.
  • the invention relates to the sphere of preventive treatment of spinal diseases.
  • the natural posture of a human being is the upright posture.
  • the sitting position is unnatural for us and it can produce traumatizing situations for our organism. Therefore, the modern man, spending long hours daily in the sitting position, runs a risk of having problems with the movement system, especially with the spine. It is believed that it is the sitting position which is responsible for pandemic dimension of spinal diseases. Since incorrect, pathologenic posture while sitting is generally retained, spinal problems are more and more common diseases.
  • the Polish patent application P-354570 discloses a seat destined for the use in sports buildings, movie theatres, public premises, and open space buildings. This solution provides a seat comprising a back support and a seating portion, which ends in the front with a downward, convex, curved flap.
  • the aim of the invention is to develop a new construction solution of the seat so that harmful effects of the sitting position are minimised, or even eliminated, through stabilising the spinal lumbar region in an advantageous position and relieving the tender ischial tuberosities.
  • the ergonomic seat according to the invention comprising a specially shaped back support and a specially shaped seating portion is characterised in that the back support has a convexly shaped support for the lumbar region, which at the bottom is adjoining to the seating portion thus creating the adjoining line, whereas the upper surface of the seating portion is inclined towards the front of the seat at the angle a, and it comprises a rear oval hollow portion situated below the inclination line of the angle ⁇ .
  • the angle ⁇ is preferably in the range of 2 to 15 degrees.
  • the rear oval hollow portion constitutes from 1/3 to 2/3 of the length of the seating portion and preferably comprises a longitudinal depression, positioned centrally and corresponding to the oval axis, which relieves the ischial tuberosities.
  • the seat comprises a back support which only provides support for the lumbar region.
  • the upper surface of the seating portion and/or the lower portion of the specially shaped back support is/are lined with a resilient material, preferably silicone.
  • the invention also incorporates the use of the ergonomic seat as described hereinabove in every sitting structures.
  • the invention incorporates the use of the seat in a school desk.
  • the use according to the invention incorporates also a sitting structure such as a sports seat, stadium seat, or a canoe seat.
  • Sitting structures for which the seat is found useful also comprise a chair, preferably an office chair, an armchair, preferably an office armchair, a car seat, an airplane seat, a conference armchair, a cinema/theatre armchair or seat, and a dental chair.
  • the seat can moreover be used as an overlay for a sitting structure .
  • the ergonomic seat owing to the inclined position of its surface, retains an obtuse angle between the long axis of the spine and the long axis of the lower limbs.
  • This seat due to specially designed hollows and the resiliency of the material, absorbs pressure forces applied to the pelvis, relieving in particular the ischial tuberosities.
  • a distinguishing sign of innovation of the solution is the profile of the junction between the support for the pelvis and the sacrum and the hollow portion of the seating portion, which prevents the counternutation movement and retains proper position of the pelvis and, consequently, of the spine.
  • Such manner of joining the seat with the support for the pelvis and the lumbar region determines that the sitting position is ergonomic.
  • the ergonomic seat helps therefore retain proper position of the pelvis and the sacrum, and, consequently, proper spinal curvature, simultaneously providing comfort for the user, owing to the specially designed depression area relieving in particular the ischial tuberosities. Being longitudinal in shape, this depression allows for the possibility of a comfortable use of the seat by persons with varying spacing of the ischial tuberosities, which depends on the pelvis size.
  • Fig. 1 presents a lateral cross-section of the ergonomic seat as seen from the side
  • Fig. 2 - a top view of the seating portion of the ergonomic seat.
  • the ergonomic seat comprises a specially shaped back support adjoining to a specially shaped seating portion.
  • the back support 1 has a convexly shaped support 2 for the lumbar region, which at the bottom is adjoining to the seating portion at the adjoining line 3.
  • the upper surface 4 of the seating portion is inclined from the rear edge towards the front of the seat at the angle ⁇ , the seating ' portion comprising a rear oval hollow portion situated below the inclination line of the angle ⁇ .
  • the angle ⁇ is approximately 7°.
  • the rear oval hollow portion 5 constitutes approximately 2/5 of the length of the seating portion and it comprises a centrally positioned longitudinal depression to relieve the ischial tuberosities.
  • the back support is reduced to the convexly shaped support 2 for the lumbar region, which has the indicated profile.
  • the ergonomic seat can be useful in every type of the sitting structures, for example in a school desk, in chairs, armchairs and seats, such as an office chair, a sports chair, a stadium seat, a canoe seat, an office armchair, a car seat, an airplane seat, a conference armchair, a cinema/theatre armchair or seat, or a dental chair.
  • the seat can also be used as an overlay for a sitting structure .

Landscapes

  • Orthopedics, Nursing, And Contraception (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

The ergonomic seat comprises a specially shaped back support and a specially shaped seating portion, the back support (1) having a convexly shaped support (2) for the lumbar region, adjoining at the bottom to the seating portion thus creating the adjoining line (3), and the upper surface (4) of the seating portion being inclined towards the front of the seat at the angle α and having a rear oval hollow portion (5) situated below the inclination line of the angle α. The seat can be used in sitting structures of all sorts, as well as an overlay for a sitting structure.

Description

"Ergonomic seat"
The subject of the invention is an ergonomic seat that facilitates correct spinal position of the person sitting thereon, and that simultaneously provides comfort and ergonomic position while seating.
The invention relates to the sphere of preventive treatment of spinal diseases.
The natural posture of a human being is the upright posture. The sitting position is unnatural for us and it can produce traumatizing situations for our organism. Therefore, the modern man, spending long hours daily in the sitting position, runs a risk of having problems with the movement system, especially with the spine. It is believed that it is the sitting position which is responsible for pandemic dimension of spinal diseases. Since incorrect, pathologenic posture while sitting is generally retained, spinal problems are more and more common diseases.
Statistical researches show that most lumbar disc herniations occur at the L5-S1 and the L4-L5 levels, namely, just above the incorrectly positioned pelvis. Meanwhile, the majority of solutions emphasise supporting of the lumbar region, leaving the pelvis vulnerable to the incorrect backward rotation.
There are known solutions of seats that take into consideration ergonomic functionality and that comprise hollow portions on their seating surface and supports for the lower region of the back.
The Polish patent application P-354570 discloses a seat destined for the use in sports buildings, movie theatres, public premises, and open space buildings. This solution provides a seat comprising a back support and a seating portion, which ends in the front with a downward, convex, curved flap.
Another solution known from the prior art is the seat presented in the utility model description U-110909, which comprises a seating body constituting a uniform board construction and having a hollowed seating portion and a rearwardly bent back portion, which are connected with an arch that sinks into the surface of the back portion.
Prior art also knows ergonomic solutions which take into account the bone construction of the user.
A solution comprising hollow portions to accommodate the ischial tuberosities was disclosed in the French patent document FR 2739008. It describes a seat adapted for receiving the ischial tuberosities of the user and having two transversely positioned grooves on its seating surface.
Moreover, the American patent application US 2004/005591 discloses an ergonomic seat comprising a specially shaped seating surface leaning at an angle from the back edge towards the front edge. Nonetheless, such a seat does not solve the problem of a correct and simultaneously stable positioning of the spine in the sitting position which would moreover be comfortable. Since the sitting position narrows the angle between the long axis of the spine and the long axis of the lower limbs, when we sit, we rest almost our entire body weight on the pelvis, which is directly connected with the spine via relatively immobile sacroiliac joints. Our ischial tuberosities are then especially encumbered. Simultaneously, the bending of the lower limbs leads to higher tension of the soft tissues around the hip joints and the pelvis, which fosters incorrect pelvis rotation toward counternutation - rearwards .
The aim of the invention is to develop a new construction solution of the seat so that harmful effects of the sitting position are minimised, or even eliminated, through stabilising the spinal lumbar region in an advantageous position and relieving the tender ischial tuberosities.
The ergonomic seat according to the invention comprising a specially shaped back support and a specially shaped seating portion is characterised in that the back support has a convexly shaped support for the lumbar region, which at the bottom is adjoining to the seating portion thus creating the adjoining line, whereas the upper surface of the seating portion is inclined towards the front of the seat at the angle a, and it comprises a rear oval hollow portion situated below the inclination line of the angle α. The angle α is preferably in the range of 2 to 15 degrees. The rear oval hollow portion constitutes from 1/3 to 2/3 of the length of the seating portion and preferably comprises a longitudinal depression, positioned centrally and corresponding to the oval axis, which relieves the ischial tuberosities. According to one of the variants, the seat comprises a back support which only provides support for the lumbar region.
The upper surface of the seating portion and/or the lower portion of the specially shaped back support is/are lined with a resilient material, preferably silicone.
The invention also incorporates the use of the ergonomic seat as described hereinabove in every sitting structures.
And thus the invention incorporates the use of the seat in a school desk.
The use according to the invention incorporates also a sitting structure such as a sports seat, stadium seat, or a canoe seat.
Sitting structures for which the seat is found useful also comprise a chair, preferably an office chair, an armchair, preferably an office armchair, a car seat, an airplane seat, a conference armchair, a cinema/theatre armchair or seat, and a dental chair.
The seat can moreover be used as an overlay for a sitting structure .
The ergonomic seat, owing to the inclined position of its surface, retains an obtuse angle between the long axis of the spine and the long axis of the lower limbs. This seat, due to specially designed hollows and the resiliency of the material, absorbs pressure forces applied to the pelvis, relieving in particular the ischial tuberosities. A distinguishing sign of innovation of the solution is the profile of the junction between the support for the pelvis and the sacrum and the hollow portion of the seating portion, which prevents the counternutation movement and retains proper position of the pelvis and, consequently, of the spine. Such manner of joining the seat with the support for the pelvis and the lumbar region determines that the sitting position is ergonomic.
The ergonomic seat helps therefore retain proper position of the pelvis and the sacrum, and, consequently, proper spinal curvature, simultaneously providing comfort for the user, owing to the specially designed depression area relieving in particular the ischial tuberosities. Being longitudinal in shape, this depression allows for the possibility of a comfortable use of the seat by persons with varying spacing of the ischial tuberosities, which depends on the pelvis size.
The subject-matter of the invention in its preferable example embodiment is shown in the drawing, where Fig. 1 presents a lateral cross-section of the ergonomic seat as seen from the side, and Fig. 2 - a top view of the seating portion of the ergonomic seat.
The ergonomic seat comprises a specially shaped back support adjoining to a specially shaped seating portion. The back support 1 has a convexly shaped support 2 for the lumbar region, which at the bottom is adjoining to the seating portion at the adjoining line 3. The upper surface 4 of the seating portion is inclined from the rear edge towards the front of the seat at the angle α, the seating' portion comprising a rear oval hollow portion situated below the inclination line of the angle α. The angle α is approximately 7°. The rear oval hollow portion 5 constitutes approximately 2/5 of the length of the seating portion and it comprises a centrally positioned longitudinal depression to relieve the ischial tuberosities.
In one of the preferable example embodiments, the back support is reduced to the convexly shaped support 2 for the lumbar region, which has the indicated profile.
The ergonomic seat can be useful in every type of the sitting structures, for example in a school desk, in chairs, armchairs and seats, such as an office chair, a sports chair, a stadium seat, a canoe seat, an office armchair, a car seat, an airplane seat, a conference armchair, a cinema/theatre armchair or seat, or a dental chair.
The seat can also be used as an overlay for a sitting structure .

Claims

Patent claims
1. An ergonomic seat comprising a specially shaped back support and a specially shaped seating portion, characterised in that the back support (1) has a convexly shaped support (2) for the lumbar region, adjoining at the bottom to the seating portion thus creating the adjoining line (3) , whereas the upper surface (4) of the seating portion is inclined in its profile towards the front of the seat at the angle α, and comprises a rear oval hollow portion (5) situated below the inclination line of the angle α.
2. An ergonomic seat according to claim 1, wherein the rear oval hollow portion (5) constitutes from 1/3 to 2/3 of the length of the seating portion.
3. An ergonomic seat according to claim 1, wherein the rear oval hollow portion (5) comprises a longitudinal depression, positioned centrally and corresponding to -the oval axis, which relieves the ischial tuberosities.
4. An ergonomic seat according to claim 1, wherein the inclination angle α is in the range of 2 to 15 degrees, preferably 7 degrees.
5. An ergonomic seat according to claim 1, wherein the back support (1) is constituted by the support (2) for the lumbar region.
6. An ergonomic seat according to claim 1, wherein the upper surface of the seating portion (4) and/or the lower portion of the specially shaped back support (1) are lined with a resilient material, preferably silicone.
7. The use of the ergonomic seat of claim 1 in sitting structures .
8. The use according to claim 7, wherein the sitting structure is a school desk.
9. The use according to claim 7, wherein the sitting structure is a sports chair, a stadium seat, or a canoe seat.
10. The use according to claim 7, wherein the- sitting structure is a chair, preferably an office chair.
11. The use according to claim 7, wherein the sitting structure is an armchair, preferably, an office armchair, a car seat, an airplane seat, a conference armchair, a cinema/theatre armchair, or a dental chair.
12. The use of the ergonomic seat of claim 1 as an overlay for a sitting structure.
EP20080753860 2007-07-11 2008-05-06 Ergonomic seat Active EP2170125B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08753860T PL2170125T3 (en) 2007-07-11 2008-05-06 Ergonomic seat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL382904A PL204447B1 (en) 2007-07-11 2007-07-11 Ergonomic seat
PCT/PL2008/000034 WO2009008752A1 (en) 2007-07-11 2008-05-06 Ergonomic seat

Publications (2)

Publication Number Publication Date
EP2170125A1 true EP2170125A1 (en) 2010-04-07
EP2170125B1 EP2170125B1 (en) 2015-04-22

Family

ID=39689439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080753860 Active EP2170125B1 (en) 2007-07-11 2008-05-06 Ergonomic seat

Country Status (5)

Country Link
EP (1) EP2170125B1 (en)
DK (1) DK2170125T3 (en)
ES (1) ES2539653T3 (en)
PL (2) PL204447B1 (en)
WO (1) WO2009008752A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015000149A1 (en) * 2013-07-03 2015-01-08 北京优时代科技有限公司 Integrated ergonomic computer chair
PL236954B1 (en) * 2018-03-09 2021-03-08 Linia Zdrowie Spolka Z Ograniczona Odpowiedzialnoscia Postoperative preventive seat
US11744375B2 (en) 2021-07-14 2023-09-05 Anthro Form, Llc Seat configuration

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529247A (en) * 1982-04-15 1985-07-16 Herman Miller, Inc. One-piece shell chair
DE4033544A1 (en) * 1990-10-22 1992-04-30 Simon Desanta Office chair with vertical column and cantilevered arm - has seat panel and backrest, with spring mechanism, guide bar, transverse axle and guide
WO1997006713A1 (en) 1995-08-16 1997-02-27 Powell Alan J Supporting seat
FR2739008B1 (en) 1995-09-27 1997-12-12 Garant Serge ERGONOMIC SEAT TRAY
US6551828B1 (en) 2000-06-28 2003-04-22 Protemation, Inc. Compositions and methods for generating expression vectors through site-specific recombination
DE10121472A1 (en) 2001-05-02 2002-11-07 Heinrich Iglseder Seat of chair, specifically designed in order to automatically adjust to users supporting needs
ITMI20010333U1 (en) 2001-06-19 2002-12-19 Venelli S R L PERFECT MODULAR SEAT, PARTICULARLY DESIGNED TO BE USED IN SPORTS FIELDS, IN CINEMATOGRAPHIC AND THEATRICAL SPACES AND IN LOC
WO2006034523A1 (en) * 2004-09-29 2006-04-06 Gregory Industries Limited A chair

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009008752A1 *

Also Published As

Publication number Publication date
ES2539653T3 (en) 2015-07-02
WO2009008752A1 (en) 2009-01-15
PL204447B1 (en) 2010-01-29
PL2170125T3 (en) 2015-09-30
DK2170125T3 (en) 2015-06-22
EP2170125B1 (en) 2015-04-22
PL382904A1 (en) 2009-01-19

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