Seat width: Measure the distance between the buttocks or between the two strands when sitting down, and add 2.5cm on both sides after adding 5cm. The seats are too narrow, the upper and lower wheelchairs are more difficult to oppress the buttocks and thigh tissues; the seats are too wide to sit, the wheelchairs are inconvenient to operate, the limbs are easily fatigued, and access to the doors is difficult.
Seat length: Measure the horizontal distance between the posterior buttocks and the calf gastrocnemius when sitting down, and subtract 6.5 cm from the measurement. If the seat is too short, the weight will mainly fall on the ischial bone, which may easily result in excessive local pressure; if the seat is too long, it will oppress the axillary part and affect the local blood circulation, and it is easy to stimulate the skin of the part. For short thighs or patients with hip and knee flexion and contracture, it is better to use a short seat.
Seat height: Measure the distance from the heel (or heel) to the armpit when sitting, plus 4cm. When placing the pedal, the board should be at least 5cm above the ground. Sitting position is too high, the wheelchair cannot be at the table; if the seat is too low, the ischium will bear too much weight.
Cushions In order to be comfortable and prevent hemorrhoids, the chair should sit on a wheelchair. Common cushions are foam rubber pads (5 to 10cm thick) or gel pads. In order to prevent the seat from sagging, a 0.6cm thick plywood can be placed under the cushion.
Back height: The higher the seat back, the more stable it is and the lower the seat back, the greater the upper body and upper limb activities. Low chair back: Measure the distance from the seat to the armpit (one arm or two arms stretch forward) and reduce the result by 10cm. High back: Measure the actual height from the seat to the shoulder or the back occipital region.
Armrest height: When sitting down, the upper arm is vertical, the forearm is placed flat on the armrest, and the height of the chair surface to the lower edge of the forearm is measured, plus 2.5 cm. Proper armrest height helps maintain proper body posture and balance and allows the upper limb to be placed in a comfortable position. The handrail is too high and the upper arm is forced to rise and is susceptible to fatigue. If the handrail is too low, you need to lean forward to maintain balance. Not only is it easy to fatigue, it can also affect breathing.
Other accessories for wheelchairs: It is designed to meet the needs of special patients, such as adding the handle friction surface, the extension of the rutting, the shockproof device, the armrest-mounted arm support, or the wheelchair table that is convenient for the patient to eat and write.
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