Artificial Legs TRIZ Cases
- Prosthetic Sensory Feedback via Intermittent Signal Transduction
A prosthetic feedback system uses sensors and signal transducers to transfer tactile stimuli from the device to an intact body extremity.
- Voice Coil Valve Prosthetic Ankle for Natural Gait
A prosthetic ankle system uses a voice coil valve to control hydraulic fluid flow for rapid bidirectional movement.
- Transfemoral Socket Using Compliant Members for Limb Volume Adaptation
A transfemoral socket interface uses compliant members to accommodate residual limb volume changes and distribute pressure evenly.
- Prosthetic Foot Damping Control via Rolling Behavior Sensors
A prosthetic foot adjusts joint damping using sensor data to capture rolling behavior during gait cycles.
- Adjustable Prosthetic Socket Radial Fit Adaptation
Radially adjustable shell components on longitudinal supports accommodate residual limb volume fluctuations, reducing discomfort and tissue breakdown.
- Orthopaedic Energy Storage Device with Controllable Valve
A fluidic energy storage device uses a controllable valve to regulate piston movement within cylinder chambers.
- Prosthetic Foot Mounting Bracket with Compression Torsion Joint
A prosthetic foot mounting bracket uses a compression torsion joint to link upper and lower members for controlled movement.
- Adaptive Prosthesis Knee Joint Resistance Control
Sensor-driven control reduces flexion resistance during gait transitions to improve comfort while maintaining stability.
- Orthopedic Joint Actuator with Adjustable Self-Locking Transmission
An orthopedic joint actuator uses a self-locking transmission to pivot a second part relative to a first part based on external forces.
- Variable Stiffness Prosthetic Foot via Slider Mechanism
A prosthetic foot with a variable stiffness ankle uses a slider to adjust spring tension for personalized gait support.
- Prosthetic Foot Floating Forefoot Keel Lateral Rotation
A prosthetic foot with a floating forefoot keel and resilient bumpers enables side-to-side ankle rotation.
- Multi-articulated Link Knee Joint Cylinder Position Detection
Segmenting the detection system into separate magnet and sensor components reduces manufacturing costs while maintaining bending angle accuracy.
- Quasi-Passive Pneumatic Ankle Prosthesis Stiffness Control
A quasi-passive pneumatic ankle prosthesis uses a piston and valve to store energy during dorsiflexion.
- Voice Coil Valve Prosthetic Ankle for Natural Gait Control
A voice coil valve replaces solenoids to provide proportional hydraulic control, resolving slow response and side load issues in prosthetic ankles.
- Prosthetic Knee Load-Dependent Brake and Extension Assist
A prosthetic knee uses a load-dependent brake to lock the joint during stance for stability.
- Modular Prosthetic Socket with Rocker Bolt Alignment
Segmented components and dynamic rocker bolts accommodate residual limb volume changes, eliminating complex fabrication steps.
- Prosthetic Coupling Device Ball Bearing Locking Mechanism
Ball bearing locking mechanism resolves weight-bearing reliability versus coupling complexity trade-offs in prosthetic devices.
- Electric Vacuum Pump for Prosthetic Socket Evacuation
An electrically activated pump system provides portable vacuum generation within a prosthetic limb socket.
- Parallel Damper System for Orthopedic Joints
A parallel damper system combines hydraulic and elastomeric mechanisms to deliver adjustable damping forces across movement phases.
- Thermoformed Prosthetic Foot with Universal Socket
Thermoformed polypropylene feet and adjustable universal sockets reduce manufacturing costs while accommodating stump swelling.