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Move with Motion. Heal with Ease.
A smarter way to support passive range of motion exercises for better care and recovery.










Background

Pressure ulcers are common and serious complications among patients who are bedridden or have limited mobility. To address these risks, continuous Passive Range of Motion (PROM) exercises are essential.


U.S. pressure ulcer cases yearly (AHRQ)







of stroke patients
rely on caregivers for daily joint movement assistance








Why PROM Exercises Matter

Passive Range of Motion (PROM) exercises are essential for patients who are bedridden or have limited mobility. These movements help:





Maintain joint mobility




Promote blood circulation



Prevent stiffness and ulcers





Common PROM Techniques



   

Leg PROM Movements
Moving the hips and knees helps patients stay flexible 
and feel more comfortable during long periods of bed rest.

Arm PROM Movements
These simple arm lifts help patients maintain shoulder 
movement and avoid painful stiffness.








Challenges in Passive Rehabilitation






Inconsistent Motion Accuracy

Manual PROM often lacks control over angle, 
speed, and consistency—during arc or linear movements.



High Frequency Leads to Fatigue

Rehabilitation demands three sets of exercise
per joint daily, which places a heavy burden on caregivers.



Variability in Body Shapes and Joint Ranges

Different patients have unique body 
proportions and flexibility, making manual 
PROM hard to standardize.














 provides caregivers with an easier and more precise way to assist patients in completing PROM exercises, while ensuring patient comfort and peace of mind. By integrating both hand and leg joint movement operation modes into a smart assistive device, we aim to reduce the physical burden on caregivers and enhance the overall quality of care.





Curved Arc 
Movement


Straight-LIne 
Movement








Target Areas & Users








Daily Exercise


At least three sets of exercises per day, with ten repetitions for each joint.



Target User


Bedridden patients / Paralysis patients (such as 
stroke, traumatic brain injury, spinal cord injury, etc.) / Comatose patients / Arthritis patients.



















STEP 1
Align the center of the semicircle with the midpoint of the joint.


STEP 2
Secure your arm with the stretchable strap and begin exercising.