Internal Osteosythesis TRIZ Cases

An unlinked implantable knee device absorbs and redistributes joint loads through resilient biasing structures.

An offset aperture allows the rod connection element to rotate freely, resolving assembly constraints in complex anatomical spaces.

A flexible implant loops around bony elements and engages a housing body with a set screw to secure spinal rods.

A polyaxial fulcrum connects two shaft assemblies to allow independent rotational degrees of freedom during surgical manipulation.

A toggle linkage mechanism converts rotary input into linear motion to apply precise load across a knee joint gap.

Segmented dual-head receivers and non-circular rods enhance construct stability and surgical efficiency for complex deformity corrections.

A fenestrated spinal attachment device incorporates a lateral pressure reduction mechanism to regulate bone cement flow through specific apertures.

A humerus internal safe locking nail uses a flexible pin extending from the proximal end to secure the distal bone.

A targeting guide aligns drill guides with intramedullary nails and bone plates to establish precise screw axes.

Movable sleeve extensions engage ramps to lock bone fasteners, resolving the trade-off between attachment strength and surgical ease of operation.

Segmented rotatable components adjust to anatomical variations, resolving rigidity trade-offs to promote faster spinal fusion.

A dual-chamber expansion bladder separates temporary distraction fluid from permanent structural cement, mitigating exothermic tissue damage during insertion.

A surgical guide integrates a release wheel and clamp screw to disengage fixed instruments from robotic arms.

A tissue displacement device uses a tension-based threaded rod to drive linear transport.

A bone anchor handling instrument uses a threadless section to allow translational inner sleeve insertion before screwing.

Flexible bone fasteners act as tethers across the physis, resolving fracture risks from rigid staples while guiding angular deformity correction.

An orthopedic bone plate uses an inverted wedge locking tab to prevent backing out and reduce gapping.

Segmented bone fixation plate sections slide within rib-groove channels to resolve the trade-off between structural stability and anatomical adaptability.

A rod insertion device uses an asymmetric hexagonal connection portion to engage spinal rods at multiple rotational orientations.

An intermediary separator component absorbs excessive installation torque, preventing pedicle screw loosening and maintaining long-term spinal fusion stability.

Deformable tongues lock the central passage of bone screws, preventing cement leakage while allowing guide wire insertion.

A flexible guidewire incorporates a tantalum marker to enable clear visualization during spinal procedures.

Segmented trocar and sleeve mechanisms lock a spacer behind spinous processes, preserving muscle attachments while relieving stenosis.

A sliding sleeve with non-circular cross-sections mates with an intramedullary pin to enable rotational locking.

An asymmetrical cervical spinal plate with offset fastener holes and a spring-loaded locking mechanism reduces insertion difficulty and infection risk.

Segmenting the trial implant into interchangeable components reduces trialing iterations and procedure time during spinal surgery.

Carbon fiber reinforced polymer pedicle screws eliminate metal imaging artifacts while maintaining structural strength through optimized fiber orientation.

Disposable intramedullary device featuring a solid core coated with an antibiotic polymer layer for limb infection treatment.

Semi-tubular tabs on a guiding device engage bone anchor recesses to realign offset link rods, resolving tissue access constraints.

Segmented screw anchors expand radially to increase contact area, preventing loosening in osteoporotic bone.

A bone treatment system uses RF energy to polymerize conductive cement, controlling viscosity and flow direction during injection.

A non-cylindrical guide sleeve with convexly curved broad sides reduces patient stress during percutaneous spinal interventions.

Opposed projections on the compression cap snap into complementary receiver recesses, preventing misplacement and structural weakening from swaging.

An internal supporting portion stabilizes bone fragments while a two-stage drill reduces frictional heat during mandible cutting.

Ultrasonic applicator fluidizes pin material through screw bores, resolving uneven cement distribution in bone fixation.

Dynamic connector assemblies translate and rotate to bridge screw trajectory differences, eliminating the need to remove original spinal hardware.

Segmented guide tools with stabilizers allow minimally invasive spinal surgery, reducing tissue trauma while maintaining natural spinal flexibility.

Segmented expandable hip implants bypass bone removal and reduce infection risk by entering through tiny pelvic openings.

Optical or electromagnetic tracking eliminates image registration, reducing tissue trauma during minimally invasive spinal procedures.

A preoperative planning method translates and rotates imaged vertebrae across three anatomical planes to define precise spinal curvature.

An asymmetric D-shaped guide rod prevents angular deformation in flexible fastening devices, ensuring reliable insertion into curved bone cavities.

Rotatable cable plugs align surgical cables with bone axes, reducing shear stress and preventing plate shifting.

Locking cap member with axial interference profiles eliminates threaded splay and cross-threading risks in pedicle screw systems.

Threaded anchors enable adjustable compression for stable fixation while minimizing trauma to surrounding nerves and vessels.

A ratcheting external cover secures an expandable internal brace, enabling reliable fixation of isolated burr holes without requiring insertion gaps.

A clamping instrument aligns and holds lever arms relative to each other for direct vertebral rotation.

Anchors sternal halves using a bone-insertable body and ratcheted cerclage to secure the sternum.

A polyaxial screw locking insert applies direct axial compression to the spherical head via an elastic portion.

A bone cement delivery system uses a releasable anchor connection instrument to inject stabilizing material into vertebrae.