Internal Osteosythesis TRIZ Cases

Nested wedge clutches lock return movement in a magnetostrictive implant, enabling high-force bone distraction within limited medullary space.

Orthogonal nails extend from rods to ribs, providing three-dimensional stabilization for spinal constructs.

Modular connector bridges existing and new spinal hardware via articulation, eliminating the need to remove original fixation during revision surgeries.

A self-locking spinal pinching system uses a ratchet mechanism to grip vertebrae securely.

Segmented slotted openings allow sliding engagement with locking screws, enabling stable periprosthetic fracture fixation without disturbing existing implants.

A surgical instrument latch mechanism engages spinal implants to bone fastener shafts via a locked actuator orientation.

Segmented driver design resolves adaptability complexity trade-off by nesting interchangeable buckets for secure spinal fixation.

Anti-rotation features on bone screw heads engage setscrew pockets to fix orientation, preventing screw rotation and vertebral body movement.

A surgical instrument uses a movable spacer element to hold abutment elements at defined spacing during intervertebral implant insertion.

A modular retractor assembly uses a ball and socket interface to rotate the medial blade for precise surgical positioning.

Conical rear external thread generates axial compression while tapered middle section prevents automatic twisting during insertion.

Flexible tensioning element passes through elongate fixation member to preload bone fracture in compression, resisting tensile forces across the fracture site.

Anatomical access holes indicate left or right placement while recessed screw holes allow micro-adjustments.

Segmented corrective rod applies sequential forces to realign vertebral members, resolving alignment precision versus surgical time trade-offs.

A central inflatable distractor and perimeter balloon create a horseshoe-shaped structural support within the disc space.

A removable stability element prevents warping and shrinkage in vertebral rods during injection molding, ensuring dimensional accuracy.

Fixation plate holding portion conforms to bone outer surface, preventing thin hinge twist during closing-wedge osteotomy.

Actuated expandable grippers deploy within the intramedullary space to stabilize fractures, reducing surgical trauma and infection risks.

A flexible obturator uses a multi-strand core overmolded with tapered material to dilate soft tissue in surgical procedures.

A cannula with a dynamically expandable working channel transitions between compressed and expanded states to facilitate implant delivery.

A dual-trajectory pedicle screw system secures auxiliary screws at multiple angles to increase fixation strength.

Segmented orthopedic plates reduce bending stiffness to stimulate bone remodeling and prevent stress shielding during osteosynthesis.

A tapered shaft removal tool engages tuliped pedicle screw channels to enable secure rotation and extraction.

Segmented interspinous stabilization device expands the spinal canal to relieve nerve compression without requiring invasive bone removal.

A washer assembly with coaxial internal channels adjusts cable tension to stabilize bone fractures.

A multi-axial occipital plate uses double swivel rod connectors to adjust position and orientation for precise anatomical alignment.