Seat width: measure the distance between the two hips or between the two strands when sitting down, add 5cm, that is, there is a gap of 2.5cm on each side after sitting down. The seat is too narrow, it is difficult to get on and off the wheelchair, and the hip and thigh tissues are compressed; the seat is too wide, it is difficult to sit firmly, it is inconvenient to operate the wheelchair, the limbs are easily fatigued, and it is difficult to enter and exit the door.
Seat Length: Measure the horizontal distance from the rear buttocks to the gastrocnemius muscle of the calf when sitting, and subtract 6.5cm from the measurement. If the seat is too short, the weight will mainly fall on the ischium, which may easily cause excessive local compression; if the seat is too long, it will compress the popliteal fossa, affect local blood circulation, and easily irritate the skin. For patients with shorter thighs or with hip and knee flexion contractures, a short seat is better.
Seat height: measure the distance from the heel (or heel) to the popliteal fossa when sitting down, add 4cm, and place the pedal at least 5cm off the ground. If the seat is too high, the wheelchair cannot fit at the table; if the seat is too low, the seat bones will bear too much weight.
Cushion In order to be comfortable and prevent bedsores, a cushion should be placed on the chair of the wheelchair. Common seat cushions are foam rubber cushions (5-10cm thick) or gel cushions. In order to prevent the seat from sinking, a 0.6cm thick plywood can be placed under the seat cushion.
Seat back height: The higher the seat back, the more stable it is, and the lower the seat back, the greater the movement of the upper body and upper limbs. Low back: Measure the distance from the sitting surface to the armpit (with one or both arms stretched forward) and subtract 10cm from this result. High Back: Measure the actual height from the seat surface to the shoulders or back bolster.
Armrest height: When sitting down, the upper arm is vertical and the forearm is placed on the armrest. Measure the height from the seat surface to the lower edge of the forearm, and add 2.5cm. Proper armrest height helps maintain proper body posture and balance, and allows upper extremities to be placed in a comfortable position. The armrest is too high, the upper arm is forced to rise, and it is easy to get tired. If the armrest is too low, you need to lean forward to maintain balance, which is not only easy to fatigue, but also affects breathing.
Other auxiliary parts of wheelchair: It is designed to meet the needs of special patients, such as increasing the friction surface of the handle, the extension of the car box, the shockproof device, the armrest installed on the armrest, or the wheelchair table that is convenient for the patient to eat and write.
Post time: Sep-22-2022