Walking and sitting aids

By designing an ergonomic handle and removable seat cushion assembly, the existing walking assist devices are bulky and uncomfortable, achieving a more stable and comfortable walking assist effect, and providing effective back support and rest functions.

CN222693736UActive Publication Date: 2025-04-01ENDY PROD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202322392071.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-09-04
Publication Date
2025-04-01
Estimated Expiration
2033-09-04

AI Technical Summary

Technical Problem

Existing walking assistive devices such as crutches are bulky and uncomfortable, difficult to use on smooth surfaces, and cannot fully support the user's back, making it difficult for users to obtain effective support and rest when standing or sitting.

Method used

A walking and sitting posture assist device is designed, including a removable crutch, an ergonomic handle and a seat cushion. The handle is made of thermoplastic polymer material with soft and non-slip pads that enable adjustment of shafts and angles to match the natural posture of the arms and hands. Cushion and bent rod assembly can be used to support the back and lower lumbar area during sitting position.

Benefits of technology

The device improves walking stability and comfort, reducing carpal tunnel syndrome and other arm problems during long-term use of the user. At the same time, the sitting posture design can effectively support the back, reduce pressure on the lower body, and reduce the risk of disc herniation and other back injuries.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222693736U_ABST
    Figure CN222693736U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of walking assistance, and specifically to a walking and sitting assistance device, including an axillary support, which is one of the fixed support rods of the walking and sitting assistance device, and a handle is assembled in the middle of the two axillary supports. The utility model overcomes the shortcomings of the prior art by having the handle composed of a thermoplastic polymer material, which is a material known for its toughness and impact resistance. The complexity of the internal structure allows the axis and angle to be adjusted to best match the natural posture of the arm and hand, reducing the occurrence of carpal tunnel syndrome, wrist tendonitis, medial or lateral elbow epicondylitis, and rotator cuff muscle strain in users due to long-term use; when the bending rod and the axillary support are assembled, when the crutch is separated from the middle, the user can use the upper part to stretch backwards when sitting, and press down the upper part of the crutch to sit down and rest.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of walking assistance, in particular to a walking and sitting posture assistance device. Background Art

[0002] Reduced or inhibited mobility is a significant problem for many people. Whether it is a result of an injury to the legs, hips, wrists, lumbar spine, or as a result of aging, mechanical devices are often used to help users increase their mobility. Canes, crutches, canes and a variety of other devices have been used for quite some time.

[0003] The following problems exist with existing technology: Reduced or inhibited mobility is a significant problem for many people. Whether it is a result of an injury to the legs, hips, wrists, lumbar spine, or as a result of aging, mechanical devices are often used to help users increase their mobility. Canes, crutches, canes, and various other devices have been used for quite some time. However, the functional design of these devices has remained essentially the same. Unfortunately, these devices are often cumbersome, uncomfortable for the user, difficult to use on smooth surfaces, and do not adequately support the user's back in a standing or sitting position. People with lower extremity injuries often need to use crutches to get around. However, it takes more energy for a crutch user to simply walk, and often, the crutch user may need to rest. Previous crutch systems have not provided a convenient way to provide the user with this rest, and the correct wrist position, which requires support for the back and lower lumbar region. This support is important for crutch users in both standing and sitting positions. It would also be beneficial for a crutch, or similarly constructed walking aid, to provide more comfort to the user. Walking aids further utilize the user's energy to mechanically assist the user in walking.

[0004] To this end, we have proposed walking and sitting assistance devices to solve the above-mentioned drawbacks. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a walking and sitting auxiliary device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a handle for a crutch device, comprising: front and rear vertical support rods extending downward from at least an armpit support to the ground, the front and rear support rods being located in a single vertical plane, characterized in that:

[0007] Preferably, the handle has a body with opposite ends, a first end connected to the top support rod and a second end connected to the bottom support rod, and the handle has a curved profile so that a portion of the handle is located outside the plane of the front and rear support rods.

[0008] Preferably, the curve profile is adjusted according to the user's measurement.

[0009] Preferably, the handle is made of thermoplastic polymer material.

[0010] Preferably, the body has a front portion and a rear portion, the front portion terminates at the first end portion, and the rear portion terminates at the second end portion;

[0011] The front and rear portions each extend at an angle outward from the vertical plane to form the curved profile.

[0012] Preferably, the handle has a central portion located between the front and rear portions, and the central portion is offset relative to a center point between the front and rear support rods.

[0013] Preferably, the handle has a non-rectangular cross-section.

[0014] Preferably, the upper surface of the handle is wide enough to accommodate the palm arch and thumb of the user.

[0015] Preferably, each of the front rod and the rear rod comprises a detachable upper portion and a lower portion;

[0016] Preferably, the base is configured to be attached to the bottom of the separated upper portion to prevent the bottom thereof from damaging the base surface.

[0017] Walking and sitting assistive devices, including:

[0018] Multiple side structures;

[0019] a plurality of handles, each handle being connected to one of the plurality of side structures;

[0020] a rectangular solid frame connected to said side structure;

[0021] a multi-function bag connected to a first side of the rectangular solid frame;

[0022] attached to a side opposite to said first side of said rectangular solid frame;

[0023] wherein each of the handles comprises a detachable top portion and a bottom portion,

[0024] wherein, when separated, the top portion provides under-arm support and the bottom portion provides grip to enhance stability and safety while walking;

[0025] wherein the rectangular solid frame is configured to be in at least one of a vertical and horizontal position such that when the rectangular solid frame is in the horizontal position, the first side of the rectangular solid frame faces the ground;

[0026] Wherein, the soft cushion structure is made of rubber, foam, wool, cotton pad or a combination thereof.

[0027] Preferably, the heights of the plurality of side structures are adjustable.

[0028] Preferably, the handle has an ergonomic design and soft and non-slip padding to provide maximum comfort and shock absorption.

[0029] Preferably, the side structure comprises a base portion and an expandable portion, and is configured to move vertically along the length of the fixed portion to adjust the height of the side structure.

[0030] Preferably, the bottom surface of the top portion and the upper surface of the bottom portion are consistent with each other to form an ergonomic handle.

[0031] Preferably, a top portion of the handle is attached to the expandable portion of the side structure and a bottom portion of the handle is attached to the base portion of the side structure.

[0032] Preferably, the side structure is a frame made of lightweight material and is foldable.

[0033] Compared with the prior art, the beneficial effects of the utility model are:

[0034] (1) The utility model adopts a crutch pad and handle, and the handle is composed of thermoplastic polymer material, which is a material known for its toughness and impact resistance. The complexity of the internal structure allows the axis and angle to be adjusted to best match the natural posture of the arm and hand. The grip has a soft and non-slip pad to provide maximum comfort and shock absorption. The outer cover is composed of thermoplastic elastomer (TPE), which is durable and flexible. Strong but soft, TPE minimizes pressure on the user's fingers. The larger surface area of ​​the handle provides more ergonomic support and a more comfortable armrest, reducing the risk of carpal tunnel syndrome, wrist tendonitis, medial or lateral elbow epicondylitis, rotator cuff muscle strain and other phenomena caused by long-term use by users.

[0035] (2) The utility model adopts a seat plate, a back cloth and a bending rod. When the bending rod and the armpit support are assembled, the upper end of the seat plate is loosened, the seat plate is laid down flat, and the user can sit on the upper end of the seat plate, which is convenient for the user to sit down and rest in the middle of walking when he is tired. Using this design in a sitting position can lift the upper body, so that the weight of the upper body of the user will indeed add significant pressure to the back and spine. Therefore, raising and lengthening the upper body can reduce the pressure on the lower body, thereby reducing the possibility of causing or worsening injuries, such as a herniated disc, by decompressing the spine and reducing the pressure of the upper body weight on the injured disc. The lower back is easily affected by the pressure of body weight when standing and sitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0037] Figure 1 This is a schematic diagram of the structure of the walking and sitting assisting device proposed by the utility model;

[0038] Figure 2 A schematic diagram of the top curve design proposed in the utility model;

[0039] Figure 3 A is a schematic diagram of the bottom protection cap proposed by the present invention;

[0040] Figure 3 B is a schematic diagram of the crutch base proposed by the utility model;

[0041] Figure 4 A and 4B are schematic diagrams of the structure of the detachable crutch proposed by the utility model;

[0042] Figure 5 This is a schematic diagram of the handle mold proposed by the utility model;

[0043] Figure 6 This is a perspective diagram of the front part of the handle proposed by the utility model;

[0044] Figure 7 This is a perspective diagram of the rear part of the handle proposed by the utility model;

[0045] Figure 8 A schematic diagram of the walking stick structure proposed by the utility model;

[0046] Fig. 9 A schematic diagram of a forearm crutch is provided for the utility model;

[0047] Fig.10 A schematic diagram of the rubber tip structure of the walking stick proposed by the utility model;

[0048] Fig.11 A schematic diagram of a forearm crutch replacement proposed by the utility model;

[0049] Fig.12 A and 12B are schematic diagrams of the storage bag proposed by the present invention;

[0050] Fig.13 A and 13B are front and rear views of the storage bag attachment proposed by the present invention;

[0051] Fig.14 A schematic diagram of a walker using a telescopic crutch to replace a handle proposed by the utility model;

[0052] Fig.15 and 16 A schematic diagram of a walker improved from a crutch proposed in the utility model;

[0053] Fig.17 This is a schematic diagram of the crutch structure of the modified walker proposed by the utility model;

[0054] Fig.18 This is a schematic diagram of the structure of the telescopic crutch proposed in the utility model;

[0055] Fig.19 This is a schematic diagram of a user with abnormal body shape using a crutch according to the utility model;

[0056] Fig. 20 A schematic diagram of the use of a crutch proposed in the utility model;

[0057] Fig.21 A schematic diagram of the use of a crutch and a walker proposed by the utility model;

[0058] Fig. 22 and 23 A schematic diagram of the handle design proposed by the utility model;

[0059] Fig.24 A schematic diagram showing the comparison between the handle proposed by the present invention and the grip strength of the user;

[0060] Fig.25 A-25H is a schematic diagram of the handle mold proposed by the utility model;

[0061] Fig.26 A perspective view showing the handle proposed by the present invention and the comparison of the grip strength of the user;

[0062] Fig. 27 A schematic diagram of the handle provided by the utility model;

[0063] Fig.28 A perspective view of a crutch with a rubber shock-absorbing tip proposed for the utility model;

[0064] Fig.29 This is a schematic diagram of the structure of the rubber shock-absorbing tip connection proposed by the utility model;

[0065] Fig.30 and 31 A schematic diagram of a crutch base structure is provided for the utility model;

[0066] Fig.32 A and 32B are schematic diagrams of the handle structure proposed by the utility model;

[0067] Legend:

[0068] 100, crutch; 102, handle; 104, top support rod; 108, bottom support rod; 103, cushion; 800, base; 7002, curved support rod; 111, curved connecting rod; 7001, protective cap; 114, bottom pipe mouth; 7003, base; 498, handle mold; 500, grip; 502, bracket; 552, grip cover; 560, cane support rod; 519, second protective cap; 504, cuff; 506, cuff connecting mechanism; 519, second protective cap; 563, pattern pedal; 570, forearm support rod; 574, upright support rod; 5 15. Multifunctional bag; 521. Handle; 522. Walker; 527. Hook fixing frame; 525. Hook; 524. Cane grip; 526. Cane grip upper structure; 521. Cane grip lower structure; 520. Second cane support rod; 602. Abnormal body user; 600. Second crutch; 610. Second top support rod; 612. Second bottom support rod; 710. Plug interface; 700. Spring tip; 720. Spring middle end; 716. Spring base; 702. Cane support rod interface; 714. Cane support rod bare end; 712. Connector; 810. Connector. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0070] See also Figure 1-32 , an embodiment provided by the present invention:

[0071] The walking and sitting assist device comprises a detachable crutch 100 with a special ergonomic handle 102 and a seat cushion 103 , and a top support rod 104 can be slid into the bottom support rod 108 to fix the top support rod 104 and the bottom support rod 108 .

[0072] Furthermore, the curved connecting rod 111 and the top of the crutch 100 have a curved support rod 7002 to provide more space between the two crutches for users with abnormal body shapes.

[0073] Further, the base 7003, with a protective cap 7001, can be used after the top is separated to prevent the bottom end nozzle 114 from penetrating / depressing the sitting surface, which can be used to place the crutch on various non-paved surfaces.

[0074] Furthermore, the detachable crutch 100 and the curved connecting rod 111 can stretch the upper body or decompress the back / spine, which is a secondary use of the crutch 100 for the rehabilitation of the lumbar spine and spine in a sitting position.

[0075] Further, the crutch 100 and the curved connecting rod 111, designed for use in a sitting position, can be adjusted to a specified height to allow a user to use them in a sitting position to support their torso from the back and lower spine, which can help users who have back injuries while sitting.

[0076] Furthermore, the crutch 100 and the curved connecting rod 111 can be telescopically slid into each other to adjust to a height that is convenient for the user's armpits or between the armpits when the user is in a sitting position to support the sitting surface.

[0077] Further, the shape of the grip 500 and the handle mold 498 is determined by creating an impression of the user by the compressible moldable material that the intended user grasps. The molded material formed by the user's hand impression is then scanned and the digital result is used to create the grip 500.

[0078] Further, the grip 500 is composed of two main parts: an inner rib structure and an outer soft covering. The inner rib structure provides a solid base support at the core and allows the overall mass and volume of the grip 500 to extend outward from the crutch 100 and the curved connecting rod 111. It is composed of a thermoplastic polymer material, a material known for its toughness and impact resistance. The internal structure adjusts the axis and angle to best match the natural posture of the arm and hand. The grip has a soft and non-slip padding to provide maximum comfort and shock absorption.

[0079] Further, the grip cover 552 is composed of a thermoplastic elastomer (TPE) that is durable yet flexible. Strong yet soft, TPE reduces stress on the user's fingers. The larger surface area of ​​the grip 500 provides more ergonomic support and a more comfortable armrest. The ergonomic position and angle create two unique aspects that allow for better hand positioning. First, unlike traditional crutches, the ergonomic grip or handle 500 is located out of the plane of the rest of the crutch 100. This position prevents the patient from bending their hand and wrist inward and also prevents the elbow from bending outward in order to tightly grasp the crutch. Second, the handle itself has a slight downward slope from back to front, similar to the natural angle of a person's fist when placed at their side. This prevents the patient from twisting their hand and wrist upward while holding the crutch. Overall, the grip is positioned to put the patient's hand and arm in a natural position when holding the crutch.

[0080] Further, the shape of Grip 500 is designed to perfectly fit the shape of the hand. The molded fit allows the hand to maintain a natural shape when grasping the handle, with even contact points on the palm and all fingers. A flat, wide surface creates a wide planar pressure distribution that does not apply excess pressure to any one point on the hand. The top surface of the handle is wide enough to accommodate the user's palm arch and thumb. The longer handle also avoids hand and finger cramping and slipping, the smaller, shorter handle with a standard cane. The softer material also helps to reduce the amount of weight applied. Grip 500 is an inner grip formed into the shape of the hand using molded material. It is scanned into a digital image so that this shape is perfectly replicated.

[0081] Further, the bracket 502 of the grip 500 and the grip cover 552 are designed to support the ergonomic shape of the ergonomic grip 500. This new approach helps solve the design challenges of proper and even ergonomic surface weight support and move the weight surface from the main bar support in a standard grip to outside the bar support axis without losing sufficient support required for the mobile weight area.

[0082] Further, the handle 500 is designed with a cane support rod 560. The upright support can be made from any material and color. The second protective cap 519 can be removed and replaced by another tip optimized for a specific surface, and the height of the cane support rod 560 is adjustable.

[0083] Further, the forearm support bar 570 of the grip 500 is adjacent to each side of the cuff 504, which can be wrapped around the user's arm while placed in the cuff and is combined at the front and secures the forearm crutch to the user's arm by means of a button or Velcro or other connection. In addition, if the user needs to release their hand and release the grip activity, the strap 504 will keep the crutch on their arm and prevent it from falling to the ground or needing to grab the crutch again.

[0084] Furthermore, the second protective cap 519, with the tread pattern 563, allows for greater traction on slippery surfaces.

[0085] Further, the forearm support rod 570, the oblique axis extends from the upright support rod 574 and moves the bearing to the right. The bearing of the grip 500 will move to the right. This new design helps to follow the natural position of the user's hand to prevent tension and damage to the wrist joint and other parts of the hand.

[0086] Further, the second cane support bar 520 replaces the top support bar 104 and the handle 102 of the walker 522 to ensure that the user keeps the body straight while walking to prevent unnatural postures and other side effects caused by tension on the shoulders, arms and spine.

[0087] Further, the multifunctional bag 515 has a rectangular solid frame and a hook 525, and the hook 525 is fixed to the hook fixing frame 527 so that any belongings can be placed in the bag for convenience when using the walker 522.

[0088] Further, the multifunctional bag 515 may include one or more bags to support and hold items such as mobile phones, wallets, pens, pads, etc. The multifunctional bag 515 can be used as a vertical position for the walker 522. When released from the hook holder 527 and then hooked to the hook holder 527 in the bottom support, the multifunctional bag 515 can be used as a seat for the walker 522, which can be used as a seat for the user / patient to sit on and rest as needed.

[0089] Further, the combination of the cane grip 524 and the walker 522 relieves the user's weight and stress on the shoulders, arms, wrists, hands and spine. The hand grip support and two underarm supports simultaneously form a four-point support. A small lever in the front wheel can lock the wheel, thereby preventing the walker 522 from moving in a well-known manner as needed.

[0090] Further, the arm support rod 520 can be used as a traditional crutch, but according to one embodiment of the present invention, it is attached to the left and right sides of the walker, making the traditional walker 522 multifunctional.

[0091] include:

[0092] a) The walker handle is height-adjustable to prevent sagging.

[0093] b) can be separated and used alone.

[0094] c) Can be opened to provide handles and under-arm crutches, and have four points of body support.

[0095] Furthermore, the two parts of the arm support rod 520, the cane grip 524, and the cane grip upper structure 526 move relatively and adjust the telescopic inner part. When the core support is pulled out from the main body, the upper half of the cane grip lower structure 521, the adjacent cane grip 524 of the handle is separated from the cane grip upper structure 526, and the cane grip 524 is completely pulled out. The cane grip 524 can be placed under the arm and can be used as a handle or grip when the bottom of the cane grip upper structure 526 is kept in the same position.

[0096] Further, the second crutch 600 can prevent the crutch from being at an unsafe angle with the ground. This will allow users 602 with abnormal body shapes to use it, keeping the second crutch 600 close to the body and perpendicular to the ground, thereby creating a more upright position, preventing the second crutch 600 from sliding to the sides, and providing safer movement. This second crutch 600 can also be designed and produced with different curvatures to accommodate different hip sizes or specific body shapes. The crutch 100 and the second crutch 600 have a second top support rod 610 and a second bottom support rod 612, and the second top support rod 610 can slide inside the second bottom support rod 612.

[0097] Further, a second crutch cane 600, a second top support bar 610 can be mounted on the walker 522 to create 4 support points; providing the user with 2 handles and 2 underarm supports.

[0098] Further, the grip 500 is made of a soft hand mold made of gel or TPE or any other elastic material, creating maximum comfort by providing a natural position for any type of human hand. The grip 500 includes two parts - a top and a bottom.

[0099] Further, the cane support rod interface 702 includes a spring tip 700, a plug interface 710 receiving a connector 712, and the size of the connector 712 is to receive the bare end 714 of the cane support rod of the cane support rod interface 702. The spring base 716 has a wide footprint to facilitate walking on uneven or porous surfaces, such as dirt, sand or grass / vegetation. The spring portion 720 is in the form of a living hinge arrangement, which allows weight to be transferred from front to back rolling. This action distributes the load on the impact of the walking surface to reduce shock, thereby reducing the adverse effects of carpal tunnel syndrome and other high-impact walking. In another embodiment, the spring tip 700 can also be used by people with different leg lengths. The spring top can be connected to a shorter shoe to make up for the difference in length and help the user achieve balanced walking.

[0100] Further, the second top support rod 610 or the second bottom support rod 612 of the crutch 100 is a crutch base 800, which can be used together with the second top support rod 610 to facilitate exercise. The crutch base 800 includes a connection port 810 for receiving the vertical support member of the crutch 100 or the second crutch 600.

[0101] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A walking and sitting assist device, comprising front and rear vertical support rods extending downwardly from at least an armpit support to the ground, the front and rear vertical support rods being located in a single vertical plane, characterized in that: The front and rear vertical support rods include a handle (102), a top support rod (104), a bottom support rod (108) and a grip (521); the handle (102) has a main body with opposite ends, a first end connected to the top support rod (104) and a second end connected to the bottom support rod (108); the grip (521) has a curved profile so that a portion of the handle (521) is located outside the plane of the front and rear vertical support rods.

2. The walking and sitting assist device according to claim 1, characterized in that: The curved contour of the handle (521) is adjusted according to the user's measurement.

3. The walking and sitting assist device according to claim 1, characterized in that: The handle is made of thermoplastic polymer material.

4. The walking and sitting assist device according to claim 1, characterized in that: The device body has a front portion and a rear portion, the front portion terminating at a first end portion and the rear portion terminating at a second end portion; The front and rear portions each extend at an angle outward from a vertical plane to form a curved profile.

5. The walking and sitting assist device according to claim 4, characterized in that: Also included is a handle (500) having a center portion between the front portion and the rear portion, the center portion being offset relative to a center point between the front and rear vertical support rods.

6. The walking and sitting assist device according to claim 1, characterized in that: The handle (521) has a non-rectangular cross-section.

7. The walking and sitting assist device according to claim 1, characterized in that: The upper surface of the handle (521) is wide enough to accommodate the palm arch and thumb of the user.

8. The walking and sitting assist device according to claim 1, characterized in that: Also included are a front rod, a rear rod and a base (800), each of the front rod and the rear rod comprising a detachable upper portion and a lower portion; The base (800) is configured to be attached to the bottom of the separated upper portion to prevent the bottom from damaging the surface of the base (800).

9. A walking and sitting assist device, characterized in that: include: Multiple side structures; A plurality of handles (102), each handle (521) being connected to one of the plurality of side structures; A rectangular solid frame connected to the side structure; a multi-function bag (515) connected to a first side of the rectangular solid frame; attached to a side opposite the first side of the rectangular solid frame; Each handle (521) includes a detachable top portion and a bottom portion. Among them, when separated, the top section provides under-arm support and the bottom section provides grip to enhance stability and safety while walking; The rectangular solid frame is configured to be positioned in at least one of a vertical position and a horizontal position, such that when the rectangular solid frame is in the horizontal position, a first side of the rectangular solid frame faces the ground.

10. The walking and sitting assist device according to claim 9, characterized in that: The height of the multiple side structures is adjustable.

11. The walking and sitting assist device according to claim 10, characterized in that: The handle has an ergonomic design and soft, non-slip padding for maximum comfort and shock absorption.

12. The walking and sitting assist device according to claim 11, characterized in that: The plurality of side structures include a base portion and an expandable portion configured to move vertically along a length of the fixed portion to adjust the height of the side structures.

13. The walking and sitting assist device according to claim 12, characterized in that: The bottom surface of the top portion and the upper surface of the bottom portion are congruent with each other to form an ergonomic handle (102).

14. The walking and sitting assist device according to claim 13, characterized in that: The top portion of the handle (521) is attached to the expandable portion of the side structure, and the bottom portion of the handle (521) is attached to the base portion of the side structure.

15. The walking and sitting assist device according to claim 12, characterized in that: The side structures are frames made of lightweight material and are foldable.