The present disclosure describes devices and systems that can be integrated with a foldable, manual wheelchair to convert the wheelchair into a hybrid chair capable of both manual operation and motor-powered operation. A wheelchair powering device includes a motor that is operatively coupled to a roller member so that rotation of the motor shaft causes rotation of the roller member. The roller member may be engaged against a tire of the wheelchair so that rotation of the roller member causes rotation of the tire via friction between the roller member and tire.

A rollator to aid mobility is described. The rollator comprises an A-frame with two pairs of uprights, each pair of uprights connected by at least one respective hinge to allow each pair of uprights to be folded or pivot front-to-back and a seat disposed between the two pairs of uprights, the seat foldable side-to-side. To fold compactly the rollator comprises an X-shaped cross-linkage comprising four linkage members. A method of manufacturing the rollator is also disclosed. The four linkage members may extend from a respective upright to a central hub underneath the seat. The cross-linkage may fold or pivot at the central hub in both front-to back and side-to-side dimensions when the rollator is folded away.

A portable wheelchair is collapsible for ease of development, handling and transport, while also providing a front steer configuration and a rear steer configuration.

A wheelchair seat cushion comprises a back pad module and a seat pad module which is connected with the back pad module. A resilient intermediate layer is provided within the back pad module and the seat pad module. A heat generating device is provided within in the resilient intermediate layer, wherein the heat generating device is positioned corresponding to at least one acupuncture point of a back of a user, and heat generated by the heat generating device is conducted to a body of the user via the at least one acupuncture point in order to keep the body of the user warm.

A manual wheelchair including a collapsible frame having a first lateral member that is connected to first and second braces at their respective first ends. A drive wheel axle extends along a first axis of rotation and engages a drive wheel, the first brace, and a portion of a transmission. A push rim axle extends along a second axis of rotation and engages a push rim wheel, the second brace, and a portion of the transmission, which transmits rotation of the push rim to rotation of the drive wheel. The collapsible frame additionally includes a second lateral member that is connected to the first and second braces as their respective second ends. The first and second braces are configured to release the second lateral member to collapse the manual wheelchair.

The invention relates to a seating device, such as for instance a chair or a wheelchair, with a seat and backrest extending between a first and a second side of the seating device for the purpose of supporting a seated person, which seating device can be folded into a collapsed position and a folded-out position. In the collapsed position the distance between the first and the second side is smaller than in the folded-out position, and which backrest includes a lumbar-thoracic support surface for supporting in the folded-out position the lumbar-thoracic transition area of a person situated in the seating device during use at a first angle relative to the horizontal plane.

An adjustable wheelchair and components thereof are provided. The wheelchair may include a first chassis connected to a first wheel on a first side of the wheelchair. The first chasses may include a first strut configured to laterally translate while supporting a seat. The wheelchair may further include a second chassis connected to a second wheel on a second side of the wheelchair. The second chasses may include a second strut configured to laterally translate while supporting the seat. A jack may be connected to the first chasses and second chasses. The jack may operatively cause the first and second chassis expand away from each other and contract toward each other to vary a width between the first side and second side of the wheelchair.

The invention relates to a seat for supporting a bottom of a seated user, which seat includes a first seat part for supporting a first part of the bottom of the user and a second seat part for supporting a second part of the bottom of the user. The first seat part is elastically deformable and has a first modulus of elasticity. The second seat part has a second modulus of elasticity which is at least 10 times greater than the first modulus of elasticity.

A chair is disclosed having a chair frame and a seating surface having a first side surface movably coupled to the frame, and a second side surface coupled to the frame. The first side surface is independently moveable relative to the second side surface. Each of the first side surface and the second side surface define a front end of the seating surface and a back end of the seating surface. A first actuator is coupled to the frame, where the first actuator is configured for operative communication with the first side surface.

A wheelchair (100) includes a chassis (101) defining a seat (102), a backrest (103), one or more armrests (104,105), and an undercarriage (106). One or more front caster wheels (118,119) are coupled to, and selectively detachable from, the undercarriage. One or more rear wheel assemblies (120,121) each include a rear wheel (125), an axle (127), and a mounting post (129) extending distally from the axle at a substantially orthogonal angle relative to the axle. One or more quick release devices (130,131) couple each mounting post of each rear wheel assembly to the undercarriage such that the each the one or more rear wheel assemblies is selectively detachable from the undercarriage.