US20190313800A1 - Orthopedic seating wedge with ventilation channels - Google Patents
Orthopedic seating wedge with ventilation channels Download PDFInfo
- Publication number
- US20190313800A1 US20190313800A1 US16/383,518 US201916383518A US2019313800A1 US 20190313800 A1 US20190313800 A1 US 20190313800A1 US 201916383518 A US201916383518 A US 201916383518A US 2019313800 A1 US2019313800 A1 US 2019313800A1
- Authority
- US
- United States
- Prior art keywords
- wedge
- cushion
- ventilation channels
- channels
- protrusions
- 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.)
- Abandoned
Links
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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
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/021—Detachable or loose seat cushions
- A47C7/0213—Detachable or loose seat cushions detachably secured to seats, e.g. by ties or hook and loop straps
-
- 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
- A47C7/021—Detachable or loose seat cushions
-
- 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
-
- 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
- A47C7/62—Accessories for chairs
- A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
- A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
- A47C7/742—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling
- A47C7/746—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling without active means, e.g. with openings or heat conductors
Definitions
- the invention consist in an orthopedic cushion for the seat, shaped like a wedge, which allows the user to keep an appropriate posture while sitting, provides anatomic support to the spine and helps the user to model his/hers body shape.
- Such cushions are usually made of soft polyurethane foam with a uniform structure. Such cushions may have different shapes, including wedge-alike shapes. Some cushions shapes may introduce additional profile irregularities. Such cushions are often placed in a cover (e.g. cotton or velour cover).
- cover e.g. cotton or velour cover
- orthopedic cushions e.g. those placed on a seat
- This is effected by the difference in height between the back of the cushion (below the spine) and the front of the cushion (below the thighs), which results in its wedge-shaped profile.
- Ensuring straight posture of the user may decrease sitting discomfort, e.g. relieve the user from pain that may occur in the lower end of the spine or prevent limbs from going numb.
- Regular use of such cushions may help users avoid spine curvature in the long term
- the invention consists in an orthopedic seating cushion, shaped like a wedge, which was made of a proper material and properly profiled.
- the cushion is made of a chemically cross-linked polyethylene foam of density between 40 and 50 kg/m3 (deviation tolerance +/ ⁇ 20%) (or other materials with similar physical properties).
- the material used prevents deformations while allowing the use on different surfaces irrespective of their firmness.
- the material used enables additional features, such as ventilation channels, protrusions and indentation for the tailbone.
- the above foam is more dirt resistant, allowing the cushion to remain clean without any additional covers.
- the orthopedic cushion's profile includes depression (hollow) ensuring a more stable position of the user on the cushion.
- the orthopedic cushion has four rows of protrusions placed on its body, which influence blood circulation due to irregular shape of the surface. This has a positive impact on the blood supply to the skin and its overall condition.
- the orthopedic cushion has vertical and horizontal ventilation channels which enable skin respiration.
- the vertical ventilation channels are placed between protrusions. They intersect horizontal channels at the bottom of the cushion to ensure air circulation and air access to the skin.
- the cushion has indentation for the tailbone, which relieves pressure from the spine and increases sitting comfort (there is no contact point between the tailbone and the cushion).
- the orthopedic cushion It is beneficial to manufacture the orthopedic cushion from the chemically cross-linked polyethylene foam of density between 40 and 50 kg/m3 (or material of similar physical attributes), which may be subject to only very limited deformations due to user's weight.
- the use of a firm material enables the cushion to have additional ventilation channels and protrusions.
- the firm material allows users of different weight to use the cushion on different surfaces (including also soft seats).
- FIG. 1 presents the invention from above (isometric view)
- FIG. 2 presents the invention from below (isometric view)
- FIG. 3 presents the invention from above (straight view)
- FIG. 4 presents the invention from below (straight view)
- FIG. 5 presents the invention from the front
- FIG. 6 presents the invention from the side.
- the default size of the invention is: 380 mm (length) ⁇ 430 mm (width) ⁇ 62.5 mm (height in the highest point)/10 mm (height in the lowest point). Dimension details of the invention for this size are provided below—in the case of a wedge in a different size, the dimensions should change according to the linear pattern.
- the main body of the wedge has the following dimensions: length 380 (+/ ⁇ 3 mm) ⁇ width 430 (+/ ⁇ 3 mm) ⁇ height: in the highest point 62.5 (+/ ⁇ 2 mm) (in the back), in the lowest point 10 mm (+/ ⁇ 2 mm) (in the front).
- the dimensions listed in points 1-5 should change according to the linear pattern.
- the orthopedic cushion is made of a block of chemically cross-linked polyethylene foam of density at 45 kg/m3 (with allowed tolerance +/ ⁇ 20%).
- the hardness of the foam is adjusted to ensure cushion functionality, in particular to prevent deformations under the user weight and collapse of ventilation channels.
- the hardness of the form enables adequate sitting comfort (the foam should not be too firm). As a result of using the above foam, it is not necessary to use additional covers to avoid dirt (easy cleaning of the cushion surface).
- the cushion can be manufactured in a CNC cutting and milling process in order to shape a block of polyethylene foam and to cut/drill vertical and horizontal ventilation channels as well as to keep the protrusions in place.
- an orthopedic cushion is made.
- the cushion has shapes and dimensions in line with the drawings and descriptions enclosed. Key parameters of the orthopedic cushion are as follows:
- FIG. 1 presents the invention from above (isometric view)
- FIG. 2 presents the invention from below (isometric view)
- FIG. 3 presents the invention from above (straight view)
- FIG. 4 presents the invention from below (straight view)
- FIG. 5 presents the invention from the front
- FIG. 6 presents the invention from the side.
- the default size of the invention is: 380 mm (length) ⁇ 430 mm (width) ⁇ 62.5 mm (height in the highest point)/10 mm (height in the lowest point). Dimension details of the invention for this size are provided below—in the case of a wedge in a different size, the dimensions should change according to the linear pattern.
Landscapes
- Invalid Beds And Related Equipment (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
Appropriate material hardness prevents deformations resulting from user weight, enables it to be used on various surfaces as well as allows the wedge to have the above mentioned features while ensuring adequate sitting comfort.
Description
- The invention consist in an orthopedic cushion for the seat, shaped like a wedge, which allows the user to keep an appropriate posture while sitting, provides anatomic support to the spine and helps the user to model his/hers body shape.
- Currently, there exist solutions in the form of orthopedic cushions which are usually made of soft polyurethane foam with a uniform structure. Such cushions may have different shapes, including wedge-alike shapes. Some cushions shapes may introduce additional profile irregularities. Such cushions are often placed in a cover (e.g. cotton or velour cover).
- The purpose of orthopedic cushions, e.g. those placed on a seat, is to force the user to keep a proper (straight) posture while sitting. This is effected by the difference in height between the back of the cushion (below the spine) and the front of the cushion (below the thighs), which results in its wedge-shaped profile. Ensuring straight posture of the user may decrease sitting discomfort, e.g. relieve the user from pain that may occur in the lower end of the spine or prevent limbs from going numb. Regular use of such cushions may help users avoid spine curvature in the long term
- Depending on the material used in the cushion production process and its hardness, some technical problems may occur. Such problems often consist in deformation of the cushion under user weight. As a result, its parameters may deteriorate and it may lose its effectiveness in keeping the user's proper posture while sitting. Furthermore, a uniform structure of the soft material used, especially when the cushion gets compressed under the user's weight, may cause sitting discomfort due to limited skin respiration.
- The invention consists in an orthopedic seating cushion, shaped like a wedge, which was made of a proper material and properly profiled.
- The cushion is made of a chemically cross-linked polyethylene foam of density between 40 and 50 kg/m3 (deviation tolerance +/−20%) (or other materials with similar physical properties). The material used prevents deformations while allowing the use on different surfaces irrespective of their firmness. At the same time, the material used enables additional features, such as ventilation channels, protrusions and indentation for the tailbone. In addition, the above foam is more dirt resistant, allowing the cushion to remain clean without any additional covers.
- The orthopedic cushion's profile includes depression (hollow) ensuring a more stable position of the user on the cushion.
- The orthopedic cushion has four rows of protrusions placed on its body, which influence blood circulation due to irregular shape of the surface. This has a positive impact on the blood supply to the skin and its overall condition.
- The orthopedic cushion has vertical and horizontal ventilation channels which enable skin respiration. The vertical ventilation channels are placed between protrusions. They intersect horizontal channels at the bottom of the cushion to ensure air circulation and air access to the skin.
- The cushion has indentation for the tailbone, which relieves pressure from the spine and increases sitting comfort (there is no contact point between the tailbone and the cushion).
- The shape of the orthopedic cushion is presented on the drawings enclosed to this application.
- It is beneficial to manufacture the orthopedic cushion from the chemically cross-linked polyethylene foam of density between 40 and 50 kg/m3 (or material of similar physical attributes), which may be subject to only very limited deformations due to user's weight. The use of a firm material enables the cushion to have additional ventilation channels and protrusions. In addition, the firm material allows users of different weight to use the cushion on different surfaces (including also soft seats).
- It is beneficial to cross link vertical and horizontal ventilation channels, which ensure air circulation and its access to the skin.
- It is beneficial to apply protrusions on the body surface, which stimulate the blood circulation and influence skin condition.
- It is beneficial to use a material which is resistant to dirt and enables easier cleaning of the cushion, even without any additional covers.
- The invention is illustrated on the following pictures, whereby
-
FIG. 1 presents the invention from above (isometric view), -
FIG. 2 presents the invention from below (isometric view), -
FIG. 3 presents the invention from above (straight view), -
FIG. 4 presents the invention from below (straight view), -
FIG. 5 presents the invention from the front, -
FIG. 6 presents the invention from the side. - The default size of the invention is: 380 mm (length)×430 mm (width)×62.5 mm (height in the highest point)/10 mm (height in the lowest point). Dimension details of the invention for this size are provided below—in the case of a wedge in a different size, the dimensions should change according to the linear pattern.
- The following pictures contain reference numbers which mark distinguishing features of the invention:
-
- 1. Indentation for the tailbone to prevent pressure on this part of the spine while sitting—the distance between the apex of the indentation and the wedge edge is 45 mm, and the apex angle is 70 degrees.
- 2. Horizontal ventilation channels which ensure inflow of air to the vertical ventilation channels. The horizontal ventilation channels are placed in two rows, 7 channels each, which intersect the vertical channels (except for the two first vertical rows in the front of the wedge). The horizontal ventilation channels have the following dimensions: width: 10 mm, length: 182.5 mm (from the edge of the wedge) and height: 10 mm.
- 3. Depression to keep the user on the wedge. The depth of the depression gradually drops, in line with the decreasing height of the wedge, starting from 8mm in the back of the wedge (20 mm from the back edge) to 1 mm in the front of the wedge (30 mm from the front edge).
- 4. Protrusions which stimulate the blood circulation and improve the condition and looks of the skin. The protrusions are placed in four rows. The neighboring rows are separated from each other by 90 mm (measured from the middle of the row). The protrusions in a given row are separated from each other by 30 mm. The protrusions have 12 mm width, 50 mm length and 9 mm height. The edges of the protrusions are rounded, i.e. their height decreases starting 12.5 mm from the middle down to the edge.
- 5. Vertical ventilation channels, which allow air inflow (from the horizontal channels) to the user's skin. The vertical channels have 25 mm length and 10 mm width. The vertical channels are placed between protrusions in four rows separated 90 mm from each other (measured from the middle of the row). The vertical channel in a given row are separated from each other by 30 mm.
- The main body of the wedge has the following dimensions: length 380 (+/−3 mm)×width 430 (+/−3 mm)×height: in the highest point 62.5 (+/−2 mm) (in the back), in the lowest point 10 mm (+/−2 mm) (in the front). In the case of a wedge in a different size, the dimensions listed in points 1-5 should change according to the linear pattern.
- The orthopedic cushion is made of a block of chemically cross-linked polyethylene foam of density at 45 kg/m3 (with allowed tolerance +/−20%). The hardness of the foam is adjusted to ensure cushion functionality, in particular to prevent deformations under the user weight and collapse of ventilation channels. On the other hand, the hardness of the form enables adequate sitting comfort (the foam should not be too firm). As a result of using the above foam, it is not necessary to use additional covers to avoid dirt (easy cleaning of the cushion surface).
- The cushion can be manufactured in a CNC cutting and milling process in order to shape a block of polyethylene foam and to cut/drill vertical and horizontal ventilation channels as well as to keep the protrusions in place.
- As a result of the above process, an orthopedic cushion is made. The cushion has shapes and dimensions in line with the drawings and descriptions enclosed. Key parameters of the orthopedic cushion are as follows:
-
- the main wedge-shaped body with the following dimensions: 380 (+/−3 mm)×430 (+/−3mm)×62.5 (+/−2 mm);
- depression in the main body to prevent slipping the wedge from beneath the user while sitting;
- triangular indentation for the tailbone to increase the sitting comfort (no contact point between the tailbone and the cushion);
- the total of 40 protrusion grouped into four rows (10 protrusions per each row);
- vertical ventilation channels between individual protrusions (the total of 36 ventilation channels in four rows, 9 channels per each row) which intersect horizontal ventilation channels (except for the first two rows in the front of the body) (the total of 14 horizontal channels, 7 on each side of the cushion bottom).
- The above shape of the cushion results in the following:
-
- keeping a proper posture while sitting—a triangular shape of the cushion forces the user to keep straight while sitting;
- skin respiration—due to vertical and horizontal ventilation channels and appropriate firmness of the material used (no deformation under the user's weight), it is possible to ensure air inflow, skin respiration and better sitting comfort;
- stimulation of blood circulation—possible due to irregular shape of the surface, while still maintaining sitting comfort.
- The invention is illustrated on the following pictures, whereby
-
FIG. 1 presents the invention from above (isometric view), -
FIG. 2 presents the invention from below (isometric view), -
FIG. 3 presents the invention from above (straight view), -
FIG. 4 presents the invention from below (straight view), -
FIG. 5 presents the invention from the front, -
FIG. 6 presents the invention from the side. - The default size of the invention is: 380 mm (length)×430 mm (width)×62.5 mm (height in the highest point)/10 mm (height in the lowest point). Dimension details of the invention for this size are provided below—in the case of a wedge in a different size, the dimensions should change according to the linear pattern.
- The following pictures contain reference numbers which mark distinguishing features of the invention:
-
- 1. Indentation for the tailbone to prevent pressure on this part of the spine while sitting—the distance between the apex of the indentation and the wedge edge is 45 mm, and the apex angle is 70 degrees.
- 2. Horizontal ventilation channels which ensure inflow of air to the vertical ventilation channels. The horizontal ventilation channels are placed in two rows, 7 channels each, which intersect the vertical channels (except for the two first vertical rows in the front of the wedge). The horizontal ventilation channels have the following dimensions: width: 10 mm, length: 182.5 mm (from the edge of the wedge) and height: 10 mm.
- 3. Depression to keep the user on the wedge. The depth of the depression gradually drops, in line with the decreasing height of the wedge, starting from 8 mm in the back of the wedge (20 mm from the back edge) to 1 mm in the front of the wedge (30 mm from the front edge).
- 4. Protrusions which stimulate the blood circulation and improve the condition and looks of the skin. The protrusions are placed in four rows. The neighboring rows are separated from each other by 90 mm (measured from the middle of the row). The protrusions in a given row are separated from each other by 30 mm. The protrusions have 12 mm width, 50 mm length and 9 mm height. The edges of the protrusions are rounded, i.e. their height decreases starting 12.5 mm from the middle down to the edge.
- 5. Vertical ventilation channels, which allow air inflow (from the horizontal channels) to the user's skin. The vertical channels have 25 mm length and 10 mm width. The vertical channels are placed between protrusions in four rows separated 90 mm from each other (measured from the middle of the row). The vertical channel in a given row are separated from each other by 30 mm.
- 6. The main body of the wedge has the following dimensions: length 380 (+/−3mm)×width 430 (+/−3 mm)×height: in the highest point 62.5 (+/−2 mm) (in the back), in the lowest point 10 mm (+/−2 mm) (in the front). In the case of a wedge in a different size, the dimensions listed in points 1-5 should change according to the linear pattern.
Claims (3)
1. The orthopedic seating wedge which comprises a distinct ventilation system consisting of intersecting vertical and horizontal ventilation channels that ensure appropriate skin respiration and better sitting comfort.
2. The orthopedic seating wedge as in Point 1 which comprises protrusions that improve blood circulation in the body part in contact with the wedge, due to an irregular shape of the latter.
3. The orthopedic seating wedge as in Point 1 with a shape that comprises an indentation for the lower part of the spine (no pressure from the wedge on the spine while sitting) and depression to help the user keep his/her position on the wedge.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PLP.425212 | 2018-04-12 | ||
PL425212A PL425212A1 (en) | 2018-04-12 | 2018-04-12 | Orthopedic pad in the form of a wedge with ventilation channels |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190313800A1 true US20190313800A1 (en) | 2019-10-17 |
Family
ID=68160723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/383,518 Abandoned US20190313800A1 (en) | 2018-04-12 | 2019-04-12 | Orthopedic seating wedge with ventilation channels |
Country Status (2)
Country | Link |
---|---|
US (1) | US20190313800A1 (en) |
PL (1) | PL425212A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220287463A1 (en) * | 2021-03-12 | 2022-09-15 | Ergo2Go LLC | Seat and lumbar support cushion |
US20230255357A1 (en) * | 2022-02-15 | 2023-08-17 | Stephen Lavitol | Buttocks elevating auxiliary seat cushioning system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5079790A (en) * | 1990-10-01 | 1992-01-14 | Pouch William H | Foam cushion for use with a wheel chair |
US5402545A (en) * | 1994-04-05 | 1995-04-04 | Jolley; B. Jeffrey | Orthopedic seat cushion with upstanding projections |
US7946655B2 (en) * | 2009-06-10 | 2011-05-24 | Hsu Tsung-Yung | Seat cushion structure |
US9609951B2 (en) * | 2015-09-03 | 2017-04-04 | King Chan | Foam seat cushions |
-
2018
- 2018-04-12 PL PL425212A patent/PL425212A1/en unknown
-
2019
- 2019-04-12 US US16/383,518 patent/US20190313800A1/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220287463A1 (en) * | 2021-03-12 | 2022-09-15 | Ergo2Go LLC | Seat and lumbar support cushion |
US20230255357A1 (en) * | 2022-02-15 | 2023-08-17 | Stephen Lavitol | Buttocks elevating auxiliary seat cushioning system |
Also Published As
Publication number | Publication date |
---|---|
PL425212A1 (en) | 2019-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- INCOMPLETE APPLICATION (PRE-EXAMINATION) |