An auxiliary drive device for a wheelchair has at least one electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The coupling mechanism includes a movable locking element which is movably supported in the coupling mechanism. The movable locking element can be in a locking position in which it causes locking in a positive-locking manner so that the auxiliary drive device is coupled to the wheelchair and, by operation of a handle, the locking element can be moved in a release position in which uncoupling of the auxiliary drive device from the wheelchair is possible.

The present invention relates to a wheelchair that includes a base frame having robotic legs and a seat assembly. A pair of armrests include at least one control stick and an electronic display for operating the wheelchair. A motor receives power from rechargeable batteries and extends or retracts the robotic legs. The legs have big wheels and small wheels that assists in movement of the wheelchair, including ascending and descending a staircase. The small wheels can be raised or lowered as per requirements automatically by the motor using a sensor or manually using the control stick. The wheelchair can be operated remotely using a handheld remote-control device enabling a caretaker to remotely activate and maneuver the wheelchair. The wheelchair enables individuals who use wheelchairs to remain independent even in traditionally non-accessible spaces and offers a way for disabled, elderly, and sick individuals to retain their independence.

The present disclosure includes methods of operating a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, one or more pairs of arm assemblies, and one or more sensors. The arm assembly includes a wheel configured to move from a first spatial location when the wheelchair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters can selectively engage the arm assembly based on at least one of a seat position, position of the arm assembly, and surface conditions of ground surface. The arm limiters can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair. The methods adjust the maximum operational speed of the wheelchair when the seat is in an elevated position based on sensor data relating to one or more of the arm limiter position and the position of the frame.

A wheelchair for supporting a user, and for providing movement of the user's arm has a wheelchair body supported by wheels for supporting the user for rolling movement, an armrest for supporting the user's arm thereupon, and a movable mounting mechanism for mounting the armrest on the wheelchair body so that the armrest can move between a first position and a second position. A movement mechanism moves the armrest between the first and second positions.

Provided is a robot. The robot includes a main body in which an opening portion is defined in a top surface thereof, a seat configured to cover an upper side of the opening portion, a traveling wheel protruding downward from a bottom surface of the main body, a backrest connected to the seat, an opening defined in a front surface of the main body, a foot supporter protruding forward from the main body through the opening, and a pair of arm supporters connected to both sides of the seat, respectively.

Systems, methods, and devices for seat elevation includes a base and a horizontal seat portion. Vertical supports attached to the seat portion include multiple lift angle holes that allow the seat to be elevated to different lifted angles. Elongate members pivotally connect to vertical supports. The elongate members attach via one of the multiple lift angle holes. The elongate members are able to attach to different lift angle holes. The lifted angle is determined by the first one of the at least two seat position holes. A lift generator is attached to the base and extends to lift the horizontal seat portion into the lifted position. The lift generator contracts to return the horizontal seat portion to the seated position.

A multifunctional wheelchair contains: a body, a support plate, a lifting seat, and a shampoo basin. The body includes a retractable mounting, a chair back, at least one drive device, and two frames. The two frames have two main wheels, the two frames have two guide wheels, and the two armrests are arranged on a second drive device. A respective armrest has an abutting portion, and the retractable mounting have two racks. The support plate is detachably engaged on the retractable mounting of the body. The lifting seat is removably engaged on the retractable mounting of the body, and the lifting seat includes a saddle on a third drive device which is configured to drive the saddle to lift or descend adjustably. The shampoo basin is detachably connected on the chair back and included a washing chamber.

A motorized wheelchair controlled by electronic control, equipped with a structure adapted to receive a series of quick adjustments and an off-road kit to allow its locomotion through differentiated, rough and inhospitable terrains. Said wheelchair is formed by a tubular metallic structure composed of a seat structure, backrest structure, armrest and lower support structure equipped with a front wheel and rear wheel. The off-road kit consists of a pair of rear wheels with off-road or mixed tires equipped with their own rotating motor, and a pair of front wheels with off-road or mixed tires, being such wheels engaged and fixed to the chair, easily and quickly replacing the original ones.

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.

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.