Internal Osteosythesis TRIZ Cases

Interlocking castellations on overpack salvage drum lids resolve stacking stability issues by preventing rotational movement and reducing stack height.

A biodegradable bone implant system stabilizes fractured load-bearing bones using a longitudinal strut and sleeve structure.

Telescopic elongate members adjust length within the body, eliminating repeated surgeries for growing patients.

Longitudinal windows in the bone plate expose the surgical site, resolving visibility versus structural strength trade-offs.

Nested tubes maintain bone anchor orientation to eliminate bulk tray sterilization waste.

Segmented inserts with barbed appendices engage a dovetail center piece through lateral access, resolving invasive surgical complexity.

A compliant hip fixation system uses a deformable barrel member to adjust the angular orientation of the fixation element under load.

Segmented locking hole and plate relief allow post-insertion screw adjustment to improve bone alignment.

An actuator expands a guidewire-mounted device to stabilize positioning and prevent anterior femur perforations during intramedullary nailing.

Extension tubes replicate pedicle screw positions for accurate rod length determination, resolving measurement precision issues in minimally invasive surgery.

Post-operative adjustable spinal rod accommodates vertebral growth and movement by changing length through a threaded actuating mechanism.

A modular spinal screw uses a polyaxial head assembly to adjust rod orientation for precise anatomical alignment.

A driver instrument guide sleeve protects tissue from rotating components while a preload assembly maintains shaft engagement.

A lemniscate-shaped spinal rod loop distributes stress across multiple pedicle screw engagement points to enhance structural rigidity.

Parallel arms with opposing prongs engage fixation elements while a ratchet locking mechanism generates torque for rod reduction, preventing slippage.

Self-tapping flutes push soft tissue aside to prevent vascular damage during pedicle screw implantation.

A unitary drive tool apparatus simplifies spinal rod reduction and rotation through direct linear motion.

A spinal band clamp anchors rods to weak bone structures without screw penetration, preserving adjacent vertebral motion.

Nested guide rails and resilient members provide dynamic axial compression for accelerated bone healing.

A segmented spinal rod provides sagittal rigidity while allowing coronal flexibility for lateral deformity correction.

An axial channel delivers viscous bone cement through transverse holes, preventing reflux while transforming the hollow screw into a solid structure.

An integrated pedicle access tool merges targeting needle, cannula, and awl functions to prevent unintended vertebra penetration during spinal fusion.

Cross screw mechanism prevents lateral movement to reduce femoral neck shortening and rotation.

A spinal cage integrates a rotatable spin-plate to secure vertebrae positioning during fusion procedures.

Spinous metal granules with urchin-like spines fill bone defects while promoting capillary growth to delay hip replacement surgery.

A locking screw features a head passage for a longitudinal wedge element that secures the device within an intramedullary nail bore.

A dual-diameter guide wire delivers intramedullary implants with precise sizing and flush bone surface placement.

A laterally deflectable asymmetric implant forms a D-shaped loop via longitudinal backbone movement.

A prosthesis anchor uses a clamping mechanism to lock wedge sleeves in a rotationally fixed manner.

Segmented bone anchor components allow in-situ vertebra fixation, resolving trade-offs between surgical visibility and connection precision.

Segmented components and extraction capabilities enable thorough cleaning of the instrument while maintaining reliable multi-position locking.

Rotatable arms accommodate lateral curvature, resolving the trade-off between device complexity and minimally invasive adaptation.

A spinal constraint device with a compliance member resists segmental flexion while maintaining facet joint engagement.

Adjustable barrel stops constrain lag screw movement to prevent lateral backout and medial cutout while enabling selectable compression.

A semi-constrained bone screw features a repositionable head coupled to a tubular body via a shaft.

Segmented members with elongate slots allow controlled motion while preventing axial rotation.

A single stabilizing element connects adjacent vertebral bodies through a longitudinal path via one access point.

A surgical instrument system measures pilot hole depth to enable controlled screw insertion for vertebral fixation.

A laminar fixation implant uses a dedicated installation tool to tension and lock spinal tape independently.

A spinous process implant uses a spacer and extension to maintain spinal spacing while facilitating tissue ingrowth for bone fusion.

A percutaneous guide device enables precise screw placement in the cervical spine.

A spinal reduction instrument uses a translating nut on a vertical post to mechanically adjust bone screw position.

Relief slots enable elastic deformation for secure locking, reducing stress on vertebrae during spinal fusion.

Asymmetric fixing element reduces implant opening cross-section, simplifying production while maintaining bone screw stability.

Segmenting the implant into central and lateral parts enables insertion through restricted posterolateral corridors while restoring disc height.

A bone fusion device uses anchors with anti-rotation features and a breakaway rod to stabilize adjacent phalanges.