Query: Adjustable wheelchair

title: Design of an adjustable wheelchair for table tennis participation
abstract: Physical activity and recreation are very important for people with disabilities and provide benefits for self esteem, social relationships, employment, rehabilitation, and education. Para Table Tennis is an adaptive sport where participants compete in table tennis while sitting in a wheelchair. However, athletes generally use their everyday wheelchair instead of a device specifically designed for the sport. The specific support, movements, and posture needed to participate in table tennis at the highest level are different than general day to day mobility and a device could be optimized for the sport. This research describes the development of a wheelchair specifically designed for para table tennis.  The design followed a participatory action design approach which identified the specific needs for a wheelchair to be used during para table tennis.  Three design needs were identified which included 1) locking the casters in the forward direction, 2) ability to raise the seat height as high as possible while allowing the user's knees to fit under the table, and 3) adjustable seat angle which will allow some users to have anterior tilt to get their trunk even higher while other users could have posterior tilt for stability. A new chair meeting these needs was designed and prototyped.  Para table tennis has some specific requirements related to movements and posture which were improved by a new wheelchair design specific for the sport.  Many adaptive sports are improved with sport specific technology. A model client was used to develop a wheelchair specifically for adaptive table tennis. The height and angle of the seat of the new wheelchair can be adjusted for optimal stability and reach. The casters of the new wheelchair can be locked to allow only forward and backward motion

title: DEVELOPMENT OF ADJUSTABLE WHEELCHAIR TRAINING STRUCTURE AND VALIDATION OF USEFULNESS FOR EVALUATION AND TRAINING OF MANUAL WHEELCHAIR SKILL
abstract: As the number of wheelchair users increases, safety accidents related to wheelchairs are increasing. Wheelchair training has been emphasized as a way to deal with this problem. Therefore, this study aimed to develop a wheelchair training structure as an adjustable type and verify its usefulness.  In order to develop the wheelchair training structure as an adjustable type, idea meetings were held by related experts. The structure reflecting the ideas generated by the expert meetings was drawn through 3D modeling and it was produced by a commissioned woodwork shop. Then the final products including the adjustable curb and stairs were evaluated to verify their effectiveness and user satisfaction. Ten physical or occupational therapists rated satisfaction using the Korean Quebec User Evaluation of Satisfaction with Assistive Technology, and four manual wheelchair users rated effectiveness using the wheelchair Skill Test Questionnaire 5.0. And the evaluations were conducted twice before and after the 10 wheelchair training sessions each with 30 min duration. Results the result of satisfaction evaluation of the adjustable curbs and stairs by the 10 therapists showed that effectiveness was the highest, and the size and weight were the lowest. As for the effectiveness evaluation by the four manual wheelchair users, both the capacity and confidence of all subjects improved.  This study confirmed that training using this type of wheelchair training construct will help wheelchair users improve the confidence and skills of using wheelchair which are essential for their safety and independent mobility. Therefore, if the adjustable curbs and stairs are to be used in the rehabilitation process of early manual wheelchair users, it is expected to contribute to the advancing their successful social return.

title: Intelligent regulating and control device and method of structurally adjustable wheelchair
abstract: The invention provides an intelligent regulating and control device of a structurally adjustable wheelchair. The intelligent regulating and control device comprises a wheelchair main body, a wheelchair control mechanism and a data acquisition unit, wherein the data acquisition unit comprises a human state information acquisition module, a wheelchair state information acquisition module and a command input module; the wheelchair main body comprises a wheelchair support frame, a wheelchair seat plate, a wheelchair backrest which is connected to the wheelchair seat plate in a swinging mode and wheelchair supporting legs which are connected to the sides of the wheelchair support frame in a swinging mode; the wheelchair control mechanism comprises a controller and an executing mechanism; the controller is capable of outputting control commands in accordance with signals acquired by virtue of the data acquisition unit; and the executing mechanism includes a first executing mechanism which is used for controlling the wheelchair backrest to swing by 90 180 degrees relative to the wheelchair seat plate and a second executing mechanism which is used for controlling the wheelchair supporting legs to swing by 90 180 degrees relative to the wheelchair seat plate. According to the intelligent regulating and control device provided by the invention, a wheelchair state is regulated by acquiring a human state and the wheelchair state, so that comfort of a wheelchair user in a sitting posture is enhanced and dependency on nursing personnel is reduced; and a purpose of assisting the wheelchair user in movement is achieved.

title: Wireless adjustable wheelchair headrest
abstract: Powered wheelchairs were designed to provide its users with great mobility. However, some wheelchair reliant users are unable to adjust their headrest without assistance, hence increasing dependency on other people. This shortcoming has the potential to negatively affect the neck and head posture of wheelchair users, in addition to preventing them from participating in their everyday activities. Accordingly, what is needed is a motorized adjustable wheelchair headrest that the user can control when they need.

title: Adjustable wheelchair seat lifting device
abstract: The invention discloses an adjustable wheelchair seat lifting device which comprises a seat, a lifting plate, two connecting rods, two slide bases and a driving mechanism. The seat is arranged on a wheelchair in a liftable mode. The lifting plate is fixedly arranged at the bottom of the seat. The two connecting rods are located at the lower portion of the lifting plate in a crossed mode. The upper ends of the two connecting rods are respectively hinged to two ends of the lifting plate. The lower ends of the two connecting rods are hinged to the slide bases respectively. The driving mechanism is used for driving the two slide bases to move in the opposite directions at the same time. By driving the two slide bases to move in opposite directions, the two connecting rods can drive the lifting plate so as to drive the seat to rise and fall, the height of the seat can be flexibly adjusted, and therefore people who are inconvenient to walk can conveniently switch between the wheelchair and a bed.

title: Width adjusting device and adjustable wheelchair with same
abstract: The invention discloses a width adjusting device which can connect a first connector and a second connector and adjust the width between the first connector and the second connector. The width adjusting device comprises a first tube, a second tube, a positioning tube, a movable rod and a limit part, wherein the first tube is connected with the first connector, the second tube is connected with the second connector, the first tube can axially move in the second tube, the positioning tube is located in the second tube, the movable rod is located in the positioning tube and can axially move in the same, and the limit part is located on the first tube and the second tube and limits the working travel between the first tube and the second tube. An adjustable wheelchair with the width adjusting device comprises a body. The first connector is the right frame of the wheelchair. The second connector is the left frame of the wheelchair. By the width adjusting device, stepless adjusting can be achieved, and the left frame and the right frame can be adjusted to optional required angles.

title: Omnidirectional mobile adjustable wheelchair
abstract: For the intelligence and versatility of the general direction of the wheelchair, we use the mechanical design,ergonomics, prototype production methods, Wheelchair structure, function, control systems, weight loss, noise reduction aspects, comfort, etc. were designed. Can get a full range of movement of the human past to promote electric, set a variety of auxiliary functions and one of the new electric wheelchair. The wheelchair is mainly composed of frame, power systems,control systems, lift systems composed of four parts. Simple, flexible movement, small footprint and smooth, for the disabled and frail elderly to use, has taught strong marketing value.

title: An adjustable wheelchair
abstract: The present invention provides an adjustable wheelchair includes a frame, a backrest assembly and the axle assembly, the backrest assembly comprising a backrest tube upper portion, a lower portion of the knob mechanism and the backrest tube, the upper end of the lower portion of the back backrest tube is provided with a stem, the lower end of the tube is provided with an upper portion of the backrest connector, the knob stem back mechanism includes a screw match, standoffs, and adjustment knob set screw, a nut positioned inside the column connectors, screw extends through the back header, connector and nut in the column after the connector, by the adjustment knob set screw fastening the lower frame and the backrest tube is fixedly connected to the axle assembly comprises an axle clamp block, the axle tube and the axle bracket, the axle clamp block fixed to one end of the axle tube is connected to the other end of the socket in the support tube and movable along a horizontal support tube, sleeved on the hub axle support tube and movable up and down along the axle tube. Compared with the prior art, the adjustable chair of the invention may be implemented backrest angle, high wheelchair seat and adjusting the rotation center point.

title: Multidirectional and adjustable wheelchair
abstract: The utility model discloses a multidirectional and adjustable wheelchair, which comprises a main bracket and a seat frame. The top of the main bracket is provided with the seat frame. A seat is arranged on the seat frame. The two sides of the seat frame are provided with a handrail respectively. The multidirectional and adjustable wheelchair is characterized in that a seat height adjusting mechanism and a cantilever are arranged in the main bracket. The seat height adjusting mechanism is movably connected with the cantilever used for adjusting the height of the seat frame. The multidirectional and adjustable wheelchair has the advantages of beautiful appearance and convenient adjustment, wherein the seat can be lowered close to the ground and the all directional adjustment thereof can also be realized. Therefore, the riding comfort level and the traveling comfort level of users are greatly improved.

title: End user evaluation of a Kneeling Wheelchair with "on the fly" adjustable seating functions
abstract: A "kneeling" ultralight wheelchair prototype has been developed that allows users to adjust seat position "on the fly" for different activities throughout the day. The wheelchair includes independent adjustment functions for rear seat height, front seat height "kneeling" and backrest angle.  This work aimed to gather feedback about the wheelchair's functionality and performance through end user evaluation trials.  Eight manual wheelchair users evaluated the prototype Kneeling Wheelchair for a range of activities. User perspectives on parameters such as usability, comfort, stability and effectiveness were obtained through both open ended and Likert scale rating questions.  Results indicate several potential benefits of the adjustment functions of the Kneeling Wheelchair. Rear seat height adjustment may facilitate a number of activities of daily living, as well as provide benefits for comfort and social interactions. Back rest adjustment may increase comfort and stability on slopes. Front seat height adjustment may be beneficial for transfers and conducting sustained low to the ground activities. While benefits of this adjustment function were described by many participants, some struggled with usability of the kneeling mechanism and rated this function less favourably than the other two.  The findings of this study will inform future iterations of the Kneeling Wheelchair design and may spur future developments in wheeled mobility. In the long term, it is anticipated that novel wheelchair solutions, such as the one described in this paper, may support improved health, quality of life and community participation for people with mobility impairments. Implications for rehabilitation Wheelchairs that allow users to easily adjust seat and backrest position "on the fly" to better suit different tasks throughout the day may provide benefits such as facilitating activities of daily living. A front seat height adjustment feature on a new wheelchair prototype may be beneficial for transfers and conducting sustained low to the ground activities. End user evaluations can provide valuable insight to direct future design modifications and innovation.