Invalid Friendly Devices TRIZ Cases

A twistable tubular lining and motor-driven shaft let one grip aid conform to different instrument handles while maintaining secure hold.

Orthogonal pin mounting blocks stabilize distal radius fragments while preserving radiocarpal joint mobility.

Carbon-fiber splints with multi-angle pins stabilize fractures while enabling early wrist mobilization.

Spring-loaded external ankle distraction device bypasses joint load, preserving motion while treating osteoarthritis pain.

A system automatically assigns accessibility properties to software interface controls by matching control attributes against a predefined knowledge base.

Pre-assembled medical synthesis system joins supporting and synthesis elements into a coherent unit for precise surgical positioning.

A dynamic external fixator uses a reformably deformable span to apply controlled distraction and rotation forces between bone units.

Varying curvature in the distal fixation bar eliminates wire bending, reducing wobble and shear stress during fracture stabilization.

Rough ablated surfaces on polymeric fixator elements increase friction to prevent positional instability during long-term bone healing.

Segmented straight guide distributes forces to prevent rail bending, while foldable joints enable compact storage without compromising structural rigidity.

Angularly adjustable external fixation apparatus stabilizes bone fragments while preserving radiocarpal joint mobility to reduce recovery time.

Segmented sidewall slots adjust fit to resolve comfort versus complexity trade-offs, enabling independent daily task performance.

Segmented rigid struts with moveable attachment mechanisms resolve the trade-off between longitudinal adjustment and system strength in orthopedic fixation.

An extendable mouth stylus adjusts its shaft length to match user positioning needs.

Adjustable pin holders clamp bone pins at variable angles, accommodating diverse fracture configurations without rigid fixed mounts.

Segmented fixation components resolve the contradiction between device versatility and cumbersome design, enabling portable ambulatory stabilization.

Deformable rhombic spans connect bone pins to allow controlled rotation, eliminating cumbersome manual adjustments during fracture repair.

Dynamic locking pin blocks resolve the stability versus motion trade-off by enabling adjustable alignment and simplified reapplication.

Replacing pressure buttons with inductive coils eliminates physical contact, reducing user fatigue while enabling numerous sensors.

A modular external fixator uses adjustable clamp systems and rails to enable versatile pin placement for multi-planar bone fixation.

Lockable ball joint allows transverse translation of fixator members, resolving the trade-off between fracture reduction precision and adjustment convenience.

A connector bar links screw-adjustable rib clamps to stabilize the chest cavity, enabling natural rib motion and respiration in field settings.

A bolt with a counter torque opening engages a specialized tool to clamp wires securely.

Staged treatment reduces surgical infection risk in diabetic patients while correcting severe deformities.