Artificial Legs TRIZ Cases

A prosthetic feedback system uses sensors and signal transducers to transfer tactile stimuli from the device to an intact body extremity.

A prosthetic ankle system uses a voice coil valve to control hydraulic fluid flow for rapid bidirectional movement.

A transfemoral socket interface uses compliant members to accommodate residual limb volume changes and distribute pressure evenly.

A prosthetic foot adjusts joint damping using sensor data to capture rolling behavior during gait cycles.

Radially adjustable shell components on longitudinal supports accommodate residual limb volume fluctuations, reducing discomfort and tissue breakdown.

A fluidic energy storage device uses a controllable valve to regulate piston movement within cylinder chambers.

A prosthetic foot mounting bracket uses a compression torsion joint to link upper and lower members for controlled movement.

Sensor-driven control reduces flexion resistance during gait transitions to improve comfort while maintaining stability.

An orthopedic joint actuator uses a self-locking transmission to pivot a second part relative to a first part based on external forces.

A prosthetic foot with a variable stiffness ankle uses a slider to adjust spring tension for personalized gait support.

A prosthetic foot with a floating forefoot keel and resilient bumpers enables side-to-side ankle rotation.

Segmenting the detection system into separate magnet and sensor components reduces manufacturing costs while maintaining bending angle accuracy.

A quasi-passive pneumatic ankle prosthesis uses a piston and valve to store energy during dorsiflexion.

A voice coil valve replaces solenoids to provide proportional hydraulic control, resolving slow response and side load issues in prosthetic ankles.

A prosthetic knee uses a load-dependent brake to lock the joint during stance for stability.

Segmented components and dynamic rocker bolts accommodate residual limb volume changes, eliminating complex fabrication steps.

Ball bearing locking mechanism resolves weight-bearing reliability versus coupling complexity trade-offs in prosthetic devices.

An electrically activated pump system provides portable vacuum generation within a prosthetic limb socket.

A parallel damper system combines hydraulic and elastomeric mechanisms to deliver adjustable damping forces across movement phases.

Thermoformed polypropylene feet and adjustable universal sockets reduce manufacturing costs while accommodating stump swelling.

Dual straps with a molded hook backing prevent lateral shift and rotation while accommodating limb volume changes.

A multi-axial prosthetic knee uses a four-bar linkage and adjustable flexion stop to store energy during swing phase.

Rotary series elastic actuators in a modular prosthetic leg reduce user metabolic energy expenditure by storing mechanical energy during gait cycles.

Optical sensors detect component markings to determine prosthesis alignment, resolving setup complexity and specialist knowledge requirements.

Moldable putty hardens into a customized prosthetic that contours to the amputation site, reducing production time compared to traditional fabrication.

A prosthetic ankle joint uses a hydraulic system with dual pistons and antagonistic cams to dynamically adjust plantarflexion angles during walking.

A prosthetic terminal device uses a locking ring and ball mechanism to secure interchangeable tools.

A prosthesis stance controller adjusts joint torque using speed-based lookup tables to match biological gait patterns.

Spring connections in an artificial foot stabilize the body vector within ±4% of nominal length, resolving standing security issues caused by torque shifts.

A hydraulic prosthetic ankle joint uses a dual piston cylinder to dampen dorsiflexion and plantarflexion movements.

A prosthetic ankle uses a rotatable connector and passive spring mechanism to mimic natural talus alignment, resolving anatomical mismatch issues.

A powered lower limb device detects stumble events using accelerometers and strain gages to adjust joint torques.