A cushion that maintains the normal physiological curvature of the spine

Abstract

This utility model discloses a backrest cushion for maintaining the normal physiological curvature of the spine, comprising a support pad, a spinal conforming area in the middle of the support pad, and a sacral support area at the bottom of the support pad; the spinal conforming area includes a lumbar lordosis support area, a back kyphosis adaptation area, and two lumbar embracing areas, with a lumbar lordosis point between the lumbar lordosis support area and the back kyphosis adaptation area; a memory foam core is embedded inside the two lumbar embracing areas; a nylon hook strap is provided at the lower edge of the sacral support area, and a sacral support module is provided outside the nylon hook strap. This utility model, through the cooperation between the support pad and the sacral support module, forms an arc-shaped support body that conforms to the sagittal curve of the human spine, maintaining the lumbar lordosis angle within the optimal biomechanical range when the human body is in a sitting posture, while the surface curvature conforms to the natural thoracic kyphosis curve, avoiding pressure on the back soft tissues, thus facilitating the maintenance of the normal physiological curvature of the spine and reducing abnormal load on the lumbar region.

Description

Technical Field

[0001] This utility model relates to the field of cushion technology, specifically a cushion for maintaining the normal physiological curvature of the spine. Background Technology

[0002] Abnormal lumbar curvature is one of the most common causes of lower back pain. When the lumbar spine straightens or curves backward, the pressure on the intervertebral discs increases and becomes unevenly distributed, increasing the risk of disc herniation or degeneration. At the same time, the facet joints bear excessive pressure and friction, which can easily lead to arthritis and pain.

[0003] The core function of a backrest cushion is to fill the gap between the lower back and the chair back, supporting the lumbar spine and helping to maintain its natural physiological forward curvature. This effectively reduces abnormal load on the lower back, making it a key aid in preventing and alleviating lower back pain caused by poor posture. It also helps reduce abnormal and uneven pressure on the intervertebral discs, facet joints, ligaments, and muscles.

[0004] Therefore, we propose to design a cushion that maintains the normal physiological curvature of the spine. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A support cushion for maintaining the normal physiological curvature of the spine includes a support cushion, wherein a spinal contact area is provided in the middle of the support cushion and a sacral support area is provided at the bottom of the support cushion;

[0008] The spinal fitting area includes a lumbar lordosis support area, a back kyphosis adaptation area, and two waist embracing areas. A lumbar lordosis point is provided between the lumbar lordosis support area and the back kyphosis adaptation area. Memory foam cores are embedded inside the two waist embracing areas.

[0009] A nylon hook strap is provided at the lower edge of the sacral support area, and a sacral support module is provided outside the nylon hook strap.

[0010] As a preferred embodiment of the support cushion for maintaining the normal physiological curvature of the spine described in this utility model, the lower edge of the spinal contact area extends to correspond to the position of the S1 sacrum, the upper edge of the spinal contact area corresponds to the height of the T1 thoracic vertebra, and the angle between the upper edge of the spinal contact area and the vertical plane is 15°, providing strong support for the cervical spine to adapt to the natural lordotic curve of the cervical spine and to provide a headrest for tilting back, which can reach 30° when tilted back.

[0011] As a preferred embodiment of the support cushion for maintaining the normal physiological curvature of the spine described in this utility model, the lumbar lordosis support area corresponds to the L1-L4 region of the lumbar spine, and the lumbar lordosis support area has a 2cm lordosis arc along the lordosis direction of the spine. When sitting, it can maintain the lumbar lordosis angle of the human body in the biomechanical optimal range of 20~30°.

[0012] As a preferred embodiment of the backrest cushion for maintaining the normal physiological curvature of the spine as described in this utility model, the back kyphosis adaptation area corresponds to the T4-T12 region of the thoracic vertebrae, the surface curvature of the back kyphosis adaptation area conforms to the natural kyphotic curve of the thoracic vertebrae, and the thickness of the back kyphosis adaptation area is 4cm, thereby avoiding pressure on the soft tissues of the back.

[0013] As a preferred embodiment of the support cushion for maintaining the normal physiological curvature of the spine as described in this utility model, the memory foam core is arranged in a semi-ellipsoidal shape, with two memory foam cores located 6cm on either side of the lumbar anterior convexity point, providing lateral support and a sense of envelopment to the lateral edge of the psoas major muscle, while not restricting the user's lumbar movement.

[0014] As a preferred embodiment of the support cushion for maintaining the normal physiological curvature of the spine as described in this utility model, the sacral support module is fixedly connected to the back of a nylon velvet cloth, and the sacral support module is hooked to a corresponding nylon hook strap. The sacral support module is an optional arc-shaped memory foam, which is connected to the main body by Velcro. Users can choose to install or remove it according to the seat depth.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses the cooperation between the support pad and the sacral support module to form an arc-shaped support body that conforms to the sagittal curve of the human spine. This keeps the lumbar lordosis angle of the human body in the optimal biomechanical range when sitting, while the surface curvature conforms to the natural kyphosis curve of the thoracic spine, which can avoid the feeling of pressure on the back soft tissues. This makes it easier to maintain the normal physiological curvature of the spine and reduce abnormal load on the waist. The entire cushion adopts a layered molding process, with the outer layer being a breathable knitted fabric and the interior being filled in sections according to the materials. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the appearance of a support cushion for maintaining the normal physiological curvature of the spine according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a support cushion that maintains the normal physiological curvature of the spine according to the present invention.

[0020] Illustration: 1. Support pad; 2. Spine fitting area; 201. Lumbar lordosis support area; 202. Back kyphosis fitting area; 203. Waist encircling area; 204. Lumbar lordosis point; 205. Memory foam core; 3. Sacral support area; 301. Nylon hook and loop; 302. Sacral support module. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual proportions. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-2 This utility model provides a support cushion for maintaining the normal physiological curvature of the spine, including a support cushion 1, a spinal contact area 2 in the middle of the support cushion 1, and a sacral support area 3 at the bottom of the support cushion 1.

[0026] The lower edge of the spinal aligning area 2 extends to correspond to the position of S1 of the sacrum, and the upper edge of the spinal aligning area 2 corresponds to the height of the T1 vertebra of the thoracic vertebra. The angle between the upper edge of the spinal aligning area 2 and the vertical plane is 15°, providing strong support for the cervical spine to adapt to the natural lordosis curve of the cervical spine and to allow the head to tilt back and rest, reaching up to 30°.

[0027] The spinal fitting area 2 includes a lumbar lordosis support area 201, a back kyphosis adaptation area 202, and two waist embracing areas 203. A lumbar lordosis point 204 is provided between the lumbar lordosis support area 201 and the back kyphosis adaptation area 202. A memory foam core 205 is embedded inside the two waist embracing areas 203.

[0028] The lumbar lordosis support area 201 corresponds to the L1-L4 region of the lumbar spine, and the lumbar lordosis support area 201 has a 2cm lordosis arc along the direction of spinal lordosis. When sitting, it can maintain the lumbar lordosis angle of the human body in the biomechanical optimal range of 20~30°.

[0029] The back kyphosis adaptation area 202 corresponds to the T4-T12 area of ​​the thoracic vertebrae. The surface curvature of the back kyphosis adaptation area 202 conforms to the natural kyphotic curve of the thoracic vertebrae. The thickness of the back kyphosis adaptation area 202 is 4cm, thereby avoiding the feeling of pressure on the soft tissues of the back.

[0030] The memory foam core 205 is set in a semi-ellipsoidal shape. The two memory foam cores 205 are located 6cm on both sides of the lumbar anterior convexity point 204, providing lateral support and a wrapping feeling to the outer edge of the psoas major muscle, while not restricting the user's waist movement.

[0031] A nylon hook strap 301 is provided at the lower edge of the sacral support area 3, and a sacral support module 302 is provided outside the nylon hook strap 301.

[0032] The sacral support module 302 is fixedly connected to the back with nylon velvet. The sacral support module 302 is hooked to the nylon hook strap 301. The sacral support module 302 is an optional arc-shaped memory foam that is connected to the main body by Velcro. Users can choose to install or remove it according to the seat depth.

[0033] When in use, the curved contour of this support pad 1 matches the sagittal curve of the human spine. The upper edge of the support pad 1 corresponds to the height of the T1 vertebral body of the thoracic vertebra, and the lower edge extends to the S1 position of the sacrum, forming a complete support surface covering the thoracolumbar spine.

[0034] The lumbar lordosis support area 201 is made of high-density support material with a Shore hardness of 40-55A, such as modified polyether polyurethane. This area has a lordosis curvature of 1-2cm along the direction of spinal lordosis, so that the lumbar lordosis angle is maintained in the optimal biomechanical range of 20°-30° when the human body is in a sitting position.

[0035] The 202 back kyphosis adaptation zone uses a soft material with a Shore hardness of 30-40A, such as slow rebound memory foam. The surface curvature conforms to the natural kyphosis curve of the thoracic spine, and the thickness is evenly controlled at 3-5cm to avoid pressure on the soft tissues of the back.

[0036] The two waist-hugging areas 203, located 5-7cm to the left and right of the lumbar anterior convexity point 204, each have a hemispherical soft protrusion with a diameter of 3-5cm, a Shore hardness of 25-35A, and are made of silicone or low-density memory foam. They provide lateral support and a wrapping feeling for the outer edge of the psoas major muscle, while not restricting the user's waist movement.

[0037] The upper edge of the support pad 1 corresponds to the height of the T1 thoracic vertebra and has an arc-shaped extension that tilts upward at 15°-30°. It is made of high-elasticity memory foam with a Shore hardness of 25-35A to adapt to the natural forward curve of the cervical spine and provide a pillow for tilting the head back.

[0038] The lower edge of the support pad 1 is provided with a detachable sacral support module 302, which can be flexibly disassembled and assembled as needed.

[0039] The overall structure of this cushion adopts a layered molding process. The outer layer is made of breathable knitted fabric with a weight of 200-300g / m², and the internal material is filled in sections.

[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A backrest for maintaining the normal physiological curvature of the spine comprising a support pad (1) characterised in that, The support pad (1) has a spinal contact area (2) in the middle and a sacral support area (3) at the bottom. The spinal fitting area (2) includes a lumbar lordosis support area (201), a back kyphosis adaptation area (202) and two waist embracing areas (203). A lumbar lordosis point (204) is provided between the lumbar lordosis support area (201) and the back kyphosis adaptation area (202). A memory foam core (205) is embedded inside the two waist embracing areas (203). A nylon hook strap (301) is provided at the lower edge of the sacral support area (3), and a sacral support module (302) is provided outside the nylon hook strap (301).

2. The normal lordosis preserving cushion according to claim 1, wherein, The lower edge of the spinal fitting area (2) extends to correspond to the position of the sacrum S1, the upper edge of the spinal fitting area (2) corresponds to the height of the thoracic vertebra T1 vertebra, and the angle between the upper edge of the spinal fitting area (2) and the vertical plane is 15°.

3. The normal lordosis preserving cushion according to claim 1, wherein, The lumbar lordosis support area (201) corresponds to the L1-L4 region of the lumbar spine, and the lumbar lordosis support area (201) has a lordosis arc of 2cm along the lordosis direction of the spine.

4. The normal spinal curve maintaining cushion of claim 1, wherein, The back kyphosis adaptation area (202) corresponds to the T4-T12 region of the thoracic vertebrae. The surface curvature of the back kyphosis adaptation area (202) conforms to the natural kyphotic curve of the thoracic vertebrae. The thickness of the back kyphosis adaptation area (202) is 4cm.

5. The normal spinal curve maintaining cushion of claim 1, wherein, The memory foam core (205) is arranged in a semi-ellipsoidal shape, and the two memory foam cores (205) are located 6 cm on both sides of the lumbar anterior convexity point (204).

6. The normal spinal curve maintaining cushion of claim 1, wherein, The sacral support module (302) is fixedly connected to the back with nylon velvet, and the sacral support module (302) is hooked to the nylon hook strap (301).

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