A stair chair for use in transporting a patient in a seated position along stairs comprising a base, an upright coupled to the base, and a track assembly extending from the base for traversing stairs. A seat section is operatively attached to the upright and arranged for movement relative to the base between a plurality of vertical configurations including a first vertical configuration where the seat section is spaced from the base at a first distance for supporting the patient in the seated position, and a second vertical configuration where the seat section is spaced from the base at a second distance greater than the first distance. A lift mechanism is interposed between the base and the seat section to move the seat section between the plurality of vertical configurations. The lift mechanism moves the seat section to facilitate transitioning the patient to a standing position from the seated position.

A medical chair with height adjustable armrest comprises a lifting mechanism, a base coupled to a bottom end of the lifting mechanism, a backrest part rotatably coupled to an upper end of the lifting mechanism, and an armrest rotatably coupled to the backrest part and adjustable to at least one position. The armrest comprises a supporting part, a horizontal axle, and a latch system moving slidingly on the horizontal axle or rotatably around the horizontal axle. The latch system comprises a latch coupled to a control element and a guide tube, which is slidingly coupled to the horizontal axis by a guiding pin. The latch system further comprises a first stop of the armrest and a second stop on an upper end of an arm and a third stop on the horizontal axle, wherein the third stop is located on the horizontal axle between the upper end of the arm and a frame or the backrest part.

The vehicle is provided with a seat which is movable between a high position and a low position, and configured to be grounded when the seat is at the low position, and a support leg extending substantially downward from the seat of the vehicle. The support leg is movable between a retracted position positioned close to a vehicle body frame and a deployed position positioned remote from the vehicle body frame, the support leg being configured to be at the retracted position when the seat is at the high position, and to move from the retracted position to the deployed position when the seat moves from the high position to the low position.

The vehicle is provided with a lift unit includes a fixed base (21) supported by a vehicle body frame, a movable base (22) connected to a seat base supporting a seat (4), and supported by the fixed base so as to be movable between a lowered position and a reference position higher than the lowered position relative to the fixed base, an engagement device (23) configured to selectively retain the movable base to the fixed base at the reference position, an electric lift mechanism (24) configured to move the movable base vertically relative to the seat base, and a control unit (6) controlling the engagement device and the electric lift mechanism.

The present invention provides an assembly having a wheelchair and a lift assembly to urge the seat surface upward with respect to the frame from a lowered position when supporting the seated individual during use to an elevated position with respect to the frame assisting the individual during ingress or egress to or from the wheelchair. The lift assembly may include a mechanical linkage and an actuator. The assembly also provides at least one brake configured to block rotation of the wheelchair wheel with respect to the wheelchair frame in a locked state and disengaging with the wheels to allow rotation of the wheel with respect to the frame in an unlocked state. The assembly also provides a brake linkage communicating between the lift assembly and the brake to move the brake into the lock state when the seat surface moved to the elevated position.

A system for controlling a wheelchair is disclosed. The system includes an input device that includes a shaft element, a base element, and one or more annular elements. A lower distal end of the shaft element is coupled to the base element, and the shaft element is configured to pivotally move about the lower distal end of the shaft element. A first annular element of the one or more annular elements is circumferentially disposed around the shaft element. The first annular element is coupled to the base element, and the first annular element is configured to rotate about the shaft element. The input device is configured to generate one or more input signals based on a position of the first annular element and a pivotal movement of the shaft element. The one or more input signals are configured to cause a controller to set an operation mode of the wheelchair.

The present invention provides an assembly having a wheelchair and a lift assembly to urge the seat surface upward with respect to the frame from a lowered position when supporting a seated individual during use to an elevated position with respect to the frame as to assist the individual during ingress or egress to or from the wheelchair. The lift assembly may include a mechanical linkage and an actuator assembly. The actuator assembly produced a nonlinear lift force having a first period exhibiting a first rate of amplitude increase when the seating surface is nearer the lowered position and a second period exhibiting a second rate of amplitude change that is less than the first rate of amplitude increase when the seating surface is nearer the elevated position.

The invention relates to the field of wheelchairs and has been designed for the measurement of parameters for the adjustment of a seated position of the user. It relates to a device for the simulation of a seated position in a wheelchair, which includes a seat backrest (1) adjustable horizontally, vertically and during its reclination, two side seat pans (27) with armrests (3) with adjustable distance, a foldable seat pan (2) with adjustable reclination, two wheels (4) with adjustable horizontal and vertical position, and a footrest (5) with adjustable vertical position and its reclination, at least one electric motor or an electric piston (15) for the adjustment of the position of the adjustable components, an electronic circuit with special software for the control of the motors and the display of the measurements, as well as a virtual reality software. With this device, it is possible to measure the adjustment parameters for the seated position of a wheelchair user automatically and digitally by means of a software which is installed in the simulation device.

Disclosed is a wheelchair, and particularly to a wheelchair with a lifting function, which has a simple structure for automatically moving a seating block where a wheelchair user is sitting, and enables the seating block to have a lifting movement and a rotational movement, thereby simplifying a structure and assisting the wheelchair user in standing up safely

A wheelchair comprises a base assembly and a tilt assembly supported on the base assembly. The base assembly has a wheelbase and a wheel track. Each of the wheelbase and wheel track is independently adjustable. The tilt assembly is unchanged when either the wheelbase or wheel track is adjusted.