Travel wearing sitting and walking assisting equipment

Abstract

This invention discloses a wearable assistive device for sitting and walking, belonging to the field of wearable lower limb assistive walking devices. The main body of the device consists of a segmented rigid support frame, a lower limb movable foot skeleton, elastic assistive components, and wearable fixing components. It integrates core components such as a pressure-distributing multi-functional waist belt for the abdomen, shoulder auxiliary pressure-distributing straps, multi-point detachable buckles, telescopic springs, elastic ropes, spring external protective indwelling hoses, thigh ring fixation brackets, calf ring fixation brackets, knee joint locking devices, and a rubber soft sole for easy removal. This invention abandons the traditional method of directly binding the limbs with elastic components, and adopts a structure that combines segmented rigid support with composite elastic assistance. The elastic tension is transmitted through the frame, avoiding leg compression and blood circulation obstruction. At the same time, the knee joint locking device locks the frame angle to achieve stable support for sitting posture, eliminating the need for a rear rigid carbon steel component. The shoulder, back, and waist pressure-distributing design reduces the load on the waist, the spring external protective hose prevents injury and snagging, and the upper and lower ring brackets provide directional limitation for the elastic components. The invention is a purely mechanical structure with no electronic control components. It is easy to wear and highly adaptable to different body types. It can simultaneously meet the dual needs of sitting rest and standing walking assistance, solving the problems of discomfort from pressure, cumbersome sitting support, disordered assistance, and easy strain on the waist in existing products. It is suitable for the elderly, people undergoing lower limb rehabilitation, and daily long-distance walking assistance scenarios.

Description

Technical Field

[0001] This invention relates to the field of wearable lower limb assistive walking and sitting support rehabilitation equipment, specifically to a pressure-distributing shoulder, back and waist linkage, pure mechanical composite elastic assistance, and knee joint locking positioning wearable sitting and walking assistance equipment, which is suitable for the elderly, people with lower limb muscle weakness, postoperative rehabilitation people, and daily long-distance walking assistance and sitting rest scenarios. Background Technology

[0002] Existing lower limb walking assistive devices mostly adopt two modes: directly binding the limb with a single elastic rope or motor-driven exoskeleton. Traditional elastic assistive products directly bind springs and elastic cords to the skin of the thighs and calves. Long-term wear can easily cause local pressure and constriction of blood vessels, resulting in poor blood circulation in the legs, numbness, soreness, and muscle fatigue. In addition, the elastic components are prone to shifting, sticking to the legs, or getting tangled in clothing, resulting in disordered assistive direction, high wear and tear, and poor actual effort-saving effect.

[0003] Motor-driven active exoskeletons have complex structures, are relatively heavy, rely on battery control, are expensive, and are troublesome to maintain, making them unsuitable for ordinary families' daily outings, short walks, or long periods of sitting rest.

[0004] Most existing similar products only have a single walking assistance function and lack a dedicated sitting posture locking support structure. Some products with sitting posture support rely on a rear rigid carbon steel component for load-bearing, making them bulky, uncomfortable to wear, and restricting movement. At the same time, they lack a shoulder and back pressure distribution structure, concentrating all the pulling force on the waist, which can easily cause lumbar strain and soreness, resulting in insufficient adaptability and comfort.

[0005] In response to the shortcomings of existing technologies, such as leg compression, obstructed blood circulation, unreasonable assistive structure, cumbersome sitting support, high lumbar load, and poor versatility, this invention proposes a wearable sitting and walking assistive device with segmented rigid support bearing + composite elastic three-way assistance, shoulder, back and waist pressure distribution, lockable knee joint positioning, and no rear carbon steel load-bearing. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a wearable assistive device for sitting and walking. It abandons the traditional single, purely elastic limb-pulling mode and adopts a composite elastic assistive structure combining a segmented rigid support bracket, a telescopic spring, and elastic ropes. This is combined with a shoulder, back, and waist pressure-distributing system, fully protective spring hoses, upper and lower ring-shaped limiting brackets, a knee joint locking device, and an integrated design with a non-removable rubber soft sole. The rear-mounted carbon steel load-bearing bracket is completely eliminated, and the knee joint locking device locks the knee flexion and extension angle, directly achieving stable sitting support. This solves the problems of traditional elastic assistive devices, such as leg compression, obstructed blood circulation, spring pinching of the skin, snagging on clothing, and erratic assistive movement. It also simultaneously achieves the dual functions of seated posture locking and support, and easy assistance for standing and walking. The entire device is purely mechanical with no electrical control, lightweight, easy to wear, convenient to assemble and disassemble, highly adaptable to different body types, suitable for all ages, and applicable to a wide range of people and usage scenarios. Overall structural design

[0007] The main body of this equipment is divided into four core parts: segmented rigid support frame, lower limb movable foot frame, elastic assist component, and wear fixation component; The machine integrates the following core components: a pressure-distributing multi-functional waist belt for the pelvis, shoulder auxiliary pressure-distributing straps, multi-point detachable hooks, telescopic springs, elastic ropes, external protective indwelling hoses for the springs, a thigh ring-shaped fixation bracket, a calf ring-shaped fixation bracket, a knee joint locking device, a rubber soft sole for easy-to-remove shoes, lateral tension straps, and Velcro locking straps; the whole system constitutes a three-way elastic extension, full protection, full positioning, shoulder, back, and waist pressure distribution, and knee joint locking seat posture support integrated walking assistance system.

[0008] 1. Segmented rigid support bracket The segmented rigid support frame serves as the integral load-bearing base of the entire machine. It consists of two separate, movable sections: the upper thigh support and the lower calf support. It plays a crucial role in providing stabilizing support, distributing stress, and locking for precise positioning. It abandons the traditional rear-mounted carbon steel load-bearing structure, eliminating the need for additional rigid hip support components. The frame angle is locked via a knee joint locking device. When the user sits down, the entire body weight is supported by the segmented frame and evenly distributed to the shoulders, back, waist, and legs, preventing pressure concentration on the limbs and achieving stable, supportive, and relaxing posture. The top of the frame connects to the double-shoulder cross-straps, with the lower end of the straps integrated with the waist belt, forming a shoulder-back-waist linkage load-bearing system that ensures a stable and undisturbed fit with evenly distributed stress.

[0009] 2. Lower limb mobility skeletal structure The lower limb movable foot frame is mounted on the bottom of the lower leg support, and is designed to fit the contours of the human foot and lower leg. Through the hinge of the rotatable joint to the lower leg support, it can naturally follow the lower limb to complete flexion, extension, lifting, and stepping reciprocating movements. The movement trajectory is consistent with the physiological movements of the human lower limb, without interference, obstruction, or restriction of normal limb activities.

[0010] 3. Flexible support components The elastic assist component is composed of multiple sets of telescopic springs and elastic ropes. The upper and lower ends are respectively connected to the upper hanging point of the segmented rigid support frame and the bottom of the lower movable leg frame. It abandons the traditional method of directly binding and pulling the limbs. The elastic tension does not directly act on the skin and flesh of the thigh and calf. All the tension is transmitted to the movable leg frame through the rigid frame and the ring frame. The leg frame drives the lower limb to complete the transmission of movement force, thus avoiding the problems of local compression and blood vessel obstruction from the root.

[0011] 4. Knee joint locking device The core component for achieving carbon steel-free sitting support in this equipment is located between the thigh and calf ring-shaped fixing brackets, corresponding to the knee joint. It employs a knob-type / clasp-type adjustable locking structure and is equipped with multi-position positioning slots. It can freely switch between locked and unlocked states: in the unlocked state, the knee joint can flex and extend normally, and walking and stepping are unrestricted; in the locked state, it directly locks the relative angle between the thigh and calf brackets, fixing the range of knee flexion and extension, so that the segmented brackets form a stable and rigid support structure to support the body weight, enabling sitting and resting anytime and anywhere, completely replacing the traditional rear-mounted carbon steel support structure.

[0012] 5. Wearable fixing components and subdivided functional parts The wearing and securing components include double shoulder straps, a waist belt, and leg fitting and positioning straps; the shoulder straps and waist belt are integrated, and the whole device fits the human body without shifting or becoming loose; the leg straps are for positioning only and do not bear weight, so as to avoid compressing the blood circulation of the limbs.

[0013] (1) Multi-functional waist belt with pressure distribution for the belly + double shoulder auxiliary pressure distribution straps The waist belt is made of soft, breathable, skin-friendly, and pressure-resistant flexible composite fabric, conforming to the curves of the waist and abdomen for a wrap-around fit without constricting or irritating the skin. Multiple pre-drilled buckle points allow for the attachment of elastic components in any position, enabling various support configurations. The belt features quick-connect buckles for adjustable tightness to suit different body types. Symmetrical shoulder straps are fixed at the top of the belt, with the upper end resting on the shoulders and the lower end connecting to the waist belt, distributing the concentrated pulling force from the waist to the shoulders and back, significantly reducing single-point load on the lower back and preventing soreness and fatigue even after prolonged wear.

[0014] (2) Multi-point detachable hook Modular and detachable hooks can be attached to any preset point on the waist belt. The number of hooks can be increased or decreased, and the spacing and hanging angle can be adjusted. The hooks are easy to assemble and disassemble and can be operated by a single person. They are compatible with telescopic springs and elastic ropes, and can realize single-sided, double-sided, and inner and outer synchronous assistance modes. They are suitable for various scenarios such as slow walking, fast walking, climbing, long distance, and rehabilitation training.

[0015] (3) Three-way elastic extension assist component (telescopic spring + elastic cord) Outer high-strength telescopic spring: high rebound and strong support, providing two-way assistance for lifting the leg upward and propelling it forward, distributing the load on the thigh muscles and reducing resistance when lifting the leg; Inner flexible elastic cord: gentle tension, providing inward pulling force, correcting outward toeing gait, stabilizing the knee and hip joints, and reducing lateral swaying and deviation of the legs; The spring and elastic cord can be replaced with different tension specifications, and the assistance intensity is adjustable, suitable for a variety of people including the elderly, those in rehabilitation, those engaged in physical labor, and those who walk daily.

[0016] (4) Spring external protection indwelling hose Each telescopic spring is independently encased in a flexible hollow protective hose, providing full-coverage protection: ① It isolates the spring from direct contact with the skin, preventing pinching, squeezing, or scratching of the skin during telescopic movement; ② It isolates clothing, preventing the spring from snagging, tangling, or clamping onto trousers, protecting the fabric from abrasion; ③ The inner wall has low resistance and is smooth, ensuring that the spring telescopic movement is smooth, without jamming, abnormal noise, or obstruction; ④ The hose can bend and stretch with the spring, adapting to deformation when squatting or sitting, without restricting normal elastic function.

[0017] (5) Thigh and calf ring-shaped fixing buckle bracket Made of lightweight plastic or lightweight metal, it features an openable and closable ring-shaped locking structure that wraps around the legs for a secure, adjustable fit without compressing blood vessels. The stent is integrally molded with a positioning ring, and springs and elastic cords run from top to bottom for limiting movement. Its functions include limiting and guiding to prevent deviation and twisting, concentrating force to reduce force loss, and segmented positioning to ensure smooth flexion, extension, sitting, and turning without any jamming points, without affecting any limb movements.

[0018] (6) Soft, non-removable sole made of ox-tendon. Made of high-elasticity PVC in one piece, it is flexible, durable, slip-resistant, and conforms to the physiological curvature of the sole of the foot, so it won't hurt your feet when walking and won't make you tired even after walking for a long time; the non-slip grip teeth on the sole prevent slipping and spraining your ankle on wet and slippery slopes; the no-removal outer-wear design is compatible with various regular shoe styles and does not require you to take off your shoes; the one-piece molded hanging ears on both sides are used to connect the spring and elastic cord, which are sturdy, durable and not easy to break.

[0019] (7) Lateral tension straps + Velcro locking straps It comes with a matching wraparound tension strap and widened Velcro, which is put on the outside of the shoe, wraps around the instep and ankle and locks it in place; it is firmly fixed and not easy to loosen or shift, and the tightness can be controlled so as not to hurt the foot or damage the shoe surface. The elderly can put on and take off the shoes independently and quickly.

[0020] 6. Overall connection and assembly relationship Upper section: Multi-point detachable hooks attach to the multi-functional waist belt at the waist, which, together with the shoulder straps, forms a shoulder, back, and waist pressure distribution system. The upper ends of the springs and elastic cords are connected to the hooks. Upper protection: The telescopic spring is covered with a protective indwelling hose throughout. Middle positioning: The elastic element passes through the circular bracket positioning rings of the thigh and calf, and a knee joint locking device is set at the corresponding position of the knee joint, connecting the thigh and calf brackets. Lower fixation: The lower end of the elastic element is connected to the hanging ears on both sides of the sole plate. The whole structure forms a three-way elastic assist structure with the upper waist belt hook point, the middle circular positioning + knee joint locking, and the lower sole fixation. There are no rear rigid carbon steel load-bearing components, no complex hinge joints, and no electronic control. It is a pure mechanical flexible combination with a simple structure, light weight, easy assembly, and extremely low failure rate. Core working principle

[0021] 1. Seated posture locked in support position When you need to sit down and rest, operate the knee joint locking device to lock the relative angle between the thigh support and the lower leg support, fix the knee joint flexion and extension range, and make the segmented rigid support support form a stable rigid support structure; the body weight is evenly distributed to the shoulders, back, waist and legs through the support, and stable support can be achieved without the need for rear carbon steel parts. There is no elastic part directly pressing on the lower limbs, no local compression or restraint, blood circulation is smooth, and you can relax and sit for a long time, so you can sit down and rest stably at any time when you are out.

[0022] 2. Standing and walking assistance status Unlocking the knee joint locking device restores the knee joint's free flexion and extension function; during the stepping and leg lifting process, the lower limb drives the movable foot skeleton to shift, pulling the telescopic spring and elastic rope to stretch and store force simultaneously; during the stepping and landing reset phase, the elastic component retracts and releases elasticity, assisting the foot skeleton to lift upward, push forward, and reset backward, effectively distributing the force exerted by the muscles when lifting the leg and stepping, reducing the walking load; throughout the entire process, the elastic tension is transmitted through the bracket and ring structure, without directly affecting the leg skin and muscles, the force is evenly distributed, there is no local pressure, no numbness or soreness, walking is smooth and effortless, gait is stable, safe and comfortable. Features

[0023] Dual-mode sitting and walking without carbon steel: The rear carbon steel load-bearing structure has been removed, and sitting support is achieved through a knee joint locking device. It unlocks when walking and locks when sitting, making it more convenient for two uses in one.

[0024] Knee joint can switch freely: lock to fix sitting posture, unlock to walk normally, simple operation, multiple levels of adjustable locking angle to adapt to different sitting posture needs.

[0025] Shoulder, back, and waist pressure distribution design: Double shoulder straps distribute the pulling force on the waist, avoiding single-point pressure and strain on the waist, and preventing soreness and fatigue even after long-term wear.

[0026] Three-way composite elastic assist: the outer spring lifts the leg for propulsion, while the inner cable pulls back to correct posture. The two-way coordination makes the gait more stable and the assist efficiency higher.

[0027] Full protection against injury and snagging: The externally placed spring protects the flexible hose, preventing skin pinching and clothing snagging, and ensuring smooth and noiseless extension and retraction.

[0028] Upper and lower ring-shaped directional limiting: The ring-shaped brackets of the thigh and calf are centered for guidance, and the elastic elements do not shift, stick to the legs, or get tangled, and are not damaged by force.

[0029] These shoes are universally compatible and can be worn without removing them. They feature a soft, rubber sole and are suitable for all types of shoes. They are easy to put on and take off, and are slip-resistant and prevent ankle sprains.

[0030] Purely mechanical with no electrical control: No motor or battery required, no charging required, no risk of failure, lightweight, easy to maintain, and easy to use for all ages. Beneficial effects

[0031] Completely optimized support structure: Abandoning the traditional rear-mounted carbon steel load-bearing bracket, it achieves sitting support through knee joint locking, making the equipment lighter, more invisible to wear, and allowing for unrestricted limb movement.

[0032] Addressing the pain points of traditional wearable devices: By abandoning the method of directly binding limbs with elastic components, problems such as leg compression, obstructed blood circulation, numbness and soreness, skin injury from springs, and snagging on clothing are eliminated, significantly improving wearing comfort and safety.

[0033] Flexible and convenient posture locking: Knee joint locking / unlocking is operated with one button, with multiple adjustable levels, allowing for stable sitting anytime, anywhere, filling the gap in lightweight posture support among similar products.

[0034] High efficiency of force transmission: The ring-shaped bracket provides directional control, and the elastic force is transmitted linearly without lateral loss, making it easier to take steps and lift legs, and less tiring to walk long distances.

[0035] Shoulder and back pressure distribution for lumbar support: The tension is distributed to the shoulders, back, and waist, avoiding long-term single-point pressure on the waist, protecting the lumbar spine, and reducing the probability of strain.

[0036] Highly versatile and adaptable: The design allows you to remove your shoes, with multiple adjustable levels and modular design, making it suitable for a wide range of people, including the elderly, those recovering from illness, manual laborers, and those who enjoy daily walking, regardless of the terrain.

[0037] Reliable structure and low cost: Pure mechanical structure, no electronic components, simple to assemble and disassemble, durable and easy to maintain, low mass production cost, and strong applicability.

[0038] Comparison with existing similar products Traditional elastic strapping assistive devices can easily cause pressure on the legs, leading to poor blood circulation, numbness, and soreness. They also lack a sitting support function, making prolonged sitting unsuitable. Motor-driven exoskeletons are complex and heavy, relying on battery power, resulting in high maintenance costs, and still suffer from pressure issues due to structural constraints. While assistive devices with rear-mounted carbon steel components alleviate some pressure problems, they are bulky overall, and the carbon steel obstructs limb movement flexibility. This invention employs a segmented rigid support structure combined with a composite elastic assistive structure, eliminating direct limb pressure, ensuring smooth blood flow, and providing sitting support through a knee joint locking device. It eliminates the need for bulky carbon steel components, making the device lighter and more flexible. Simultaneously, the shoulder, back, and waist pressure-distributing design reduces lumbar load, and external spring protection prevents snagging and skin injury. The overall structure is simple, reliable, and adaptable to a wider range of scenarios. Attached Figure Description

[0039] 1. List of attached diagrams This instruction manual contains 4 accompanying drawings: Figure 1: Front view (linear structure diagram) Figure 2: Rear view (rear linear structure diagram) Figure 3: Side view (linear structure diagram) Figure 4: Top view (top view of the linear outline) 2. Common component serial numbers (used consistently across all four drawings) 1. Shoulder support and pressure-distributing straps; 2. Pressure-distributing multi-functional waist belt for the tummy; 3. Multi-point detachable hooks; 4. Segmented rigid support bracket; 5. Knee joint locking device; 6. Telescopic spring; 7. Spring external protection indwelling hose; 8. Elastic rope; 9. Thigh ring fixation bracket; 10. Lower leg ring fixation bracket; 11. Positioning ring; 12. Lower limb movable foot frame; 13. Soft rubber sole for easy removal; 14. Lateral tension straps; 15. Velcro locking straps. 3. Detailed descriptions of each attached figure Figure 1: Front view (linear structure diagram) The structural layout is as follows: At the top is one double-shoulder auxiliary pressure-distributing strap, symmetrically positioned across the shoulders; in the middle are two pressure-distributing waist belts, encircling the waist and abdomen area; the outer side of the waist belts has three detachable hooks, symmetrically distributed on each side; vertically in the middle are six telescopic springs (with seven external protective flexible hoses) and eight elastic cords, symmetrically arranged downwards; the thigh area has a nine-piece thigh ring-shaped fixing bracket, and the calf area has a ten-piece calf ring-shaped fixing bracket; five knee joint locking devices are installed between the thigh and calf brackets; the bottom is a thirteen-piece soft, non-removable sole plate, with a matching thirteen-piece lateral tension strap and a fifteen-piece Velcro locking strap.

[0040] Figure 2: Rear view (rear linear structure diagram) Drawing structural layout: The upper part has 1 double shoulder strap, which converges and connects to 4 segmented rigid support brackets at the back; the back of the waist has 2 half sections of a pressure belt; the left and right sides of the back of the waist have 3 multi-point detachable hooks, 6+7 telescopic springs and protective hoses, and 8 elastic ropes respectively; 5 knee joint locking devices are set at the corresponding positions of the knee joints of both legs; 9 thigh ring fixation brackets and 10 calf ring fixation brackets are set at the back of both legs respectively; the bottom has 12 lower limb movable foot skeletons connecting to 13 soft rubber soles for easy removal; there is no rear carbon steel support structure.

[0041] Figure 3: Side view (linear structure diagram) Drawing structural layout: 1. Shoulder straps connecting to 2. Waist belt, diagonally upwards; 3. Multi-point detachable hooks hanging below the waist belt; 6. Telescopic spring + 7. Protective hose + 8. Elastic rope; 9. Thigh support, 5. Knee joint locking device, 10. Lower leg support, 11. Positioning ring, sequentially arranged in the middle section; 12. Lower limb movable foot frame connecting to 13. Soft rubber sole for easy removal; 14. and 15. Straps at the ankle; The position and connection relationship of the knee joint locking device are clearly shown.

[0042] Figure 4: Top view (top view of the linear outline) Drawing structural layout: The outer ring is a 2-part pressure-type waist belt with 3 detachable hooks on the left and right sides; the middle part is a 4-segment rigid support bracket front layout; the left and right sides extend downwards to reserve 9 thigh ring brackets and 5 knee joint locking device points, reflecting the correspondence between the upper and lower parts.

Claims

1. A wearable assistive device for sitting and walking while traveling, characterized in that: Including segmented rigid support brackets, lower limb movable foot skeletons, elastic assistive components, and wearable fixation components; The segmented rigid support frame consists of an upper thigh support frame and a lower calf support frame that are hinged to each other. The upper end of the support frame is connected to the shoulder auxiliary pressure-distributing straps, and the lower end of the shoulder auxiliary pressure-distributing straps is connected to the pressure-distributing multi-functional waist belt, thus constructing a shoulder, back, and waist coordinated pressure-distributing load-bearing system. The lower limb movable foot skeleton is hinged at the bottom of the segmented rigid support frame, adapts to the contour of the human lower leg and foot, and moves synchronously with the flexion and extension of the human lower limb and stepping. The elastic assist component is composed of a telescopic spring and an elastic rope, with its two ends respectively connected to a segmented rigid support bracket and a lower limb movable foot frame to form a mechanical elastic traction assist. Wearing a fixation component is used in conjunction with a thigh ring fixation bracket and a calf ring fixation bracket, and knee joint locking devices are installed at the corresponding positions of the knee joints of both legs. By locking the relative angle between the upper thigh support and the lower calf support through the knee joint locking device, the rear carbon steel load-bearing structure is eliminated, and the human body can be stably supported by the locking of the support itself. The entire machine is a purely mechanical structure without electrical control. The elastic force is indirectly transmitted through the rigid support, avoiding direct pressure on the skin and blood vessels of the legs.

2. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: The pressure-distributing multi-functional waist belt has multiple installation positions and is equipped with detachable and repositionable multi-point hooks, allowing for flexible adjustment of the mounting position and assist angle of the telescopic spring and elastic cord.

3. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: Each telescopic spring is fitted with an external protective tubing to isolate it from skin and clothing, prevent snagging and pinching, and allow it to deform and expand synchronously with the spring.

4. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: The thigh ring fixation bracket and the calf ring fixation bracket are openable and lockable structures, equipped with positioning rings. The telescopic spring and elastic rope pass through the positioning rings to achieve centering and limit, and prevent deviation and twisting.

5. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: It also includes a rubber-plastic sole that allows for easy removal of the shoe, featuring an external, non-slip design with side loops for connecting the lower end of the elastic support components.

6. The wearable assistive device for sitting and walking as described in claim 5, characterized in that: The rubber sole allows for easy removal of shoes. It features lateral tension straps and Velcro locking straps that can wrap around the instep and ankle for secure fastening, making it suitable for various shoe styles.

7. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: The telescopic spring provides a forward thrust to lift the leg, while the elastic band provides an inward pull to correct the posture. Together, they form a three-dimensional composite elastic assist system that stabilizes the gait and distributes the weight of the lower limbs.

8. The wearable assistive device for sitting and walking as described in claim 1, characterized in that: The knee joint locking device adopts a multi-position positioning structure with buckles or knobs. When locked, it fixes the angle of the support to achieve weight-bearing in a sitting position, and when unlocked, the knee joint can flex and extend freely to meet normal walking needs.

9. A wearable assistive device for sitting and walking according to any one of claims 1-8, characterized in that: The segmented rigid support bracket and each ring bracket are made of lightweight polymer materials or lightweight alloys. The entire device eliminates the rear carbon steel rigid support, achieving lightweight and unrestricted wear.

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