Internal Osteosythesis TRIZ Cases

A laterally inserted spinous process plate uses a partially threaded bolt system with deployment nuts to achieve secure spinal fixation.

Laterally offset opposing arms and a driving rod enable single-handed distraction and implant insertion, reducing surgical tool complexity.

Nested sleeves distribute bending stresses to prevent accidental decoupling, reducing invasiveness during spinal surgery.

A flat suture banding device secures separated tissues using a buckle frame and flexible band to establish linear tension paths.

Segmented pusher rigidity and low-friction tubing minimize waste while preserving tactile feedback during vertebral injection.

Actuator screw moves a threaded carriage to expand endplates via ramped surfaces, restoring disc space height.

A receptacle within an intramedullary nail secures a magnetic locator to enable precise bone-anchor hole targeting.

A sternum cerclage plate uses cleats to secure wire loops, enabling controlled tension application during bone fixation procedures.

Adding a sixth degree of freedom enables the guide tube to rotate independently, eliminating residual rotation errors along fixed trajectories.

Nested monolithic collar prevents accidental disengagement during spinal implant length adjustment.

Segmented plates with a ratchet mechanism simplify emergency bone reattachment by enabling rapid disassembly without complex wire tensioning.

A universal occipital plate design with dynamic rod connectors reduces surgical inventory and time by adapting to patient anatomy without multiple plate sizes.

A nested endoscope within a steering tube provides direct visualization of rod placement, reducing reliance on fluoroscopy.

Modular biased angle receivers resolve preassembly constraints by allowing intraoperative component selection for precise alignment.

Screw head transitions from mobile to fixed state, resolving installation difficulties while enabling complete immobilization for vertebral straightening.

Segmented and dynamic design expands working space at the vertebra while maintaining a narrow entry profile, reducing tissue trauma and recovery time.

A pin lock mechanism secures surgical devices to bone pins.

Horizontal transvertebral curvilinear nail avoids pedicle screw complications while providing strong segmental vertebral fusion.

Compressed deformable segments expand to secure spinal fusion, reducing tissue trauma during minimally invasive implantation.

Hydrogel injection restores facet joint lubrication through minimally invasive access.

A minimally invasive working channel secures its proximal end using a sliding collar and annular frame to enable controlled lateral movement.

Curved connection members preserve posterior clearance for extensor muscles, resolving constriction and sizing issues during rod fixation.

A spinal insertion tool uses a pivot jaw and holding member to position implants.

A temporary spinal implant with an embedded sensor collects intraoperative strain data to guide final device selection.

Segmented external magnetic actuator provides sufficient torque to rotate internal implants despite large limb diameters.

A spinal rod reducer uses a sleeve and shaft to drive an anvil for precise rod positioning.

Dynamic staples allow spinal growth while tether tensioning corrects idiopathic scoliosis curves.

A bone anchoring device pivots around a single transverse axis to align with spinal anatomy.

Wedge bolts drive expanders to create uniform radial pressure, reducing point stress concentration on bone tissue during intramedullary fixation.

Flexible ligaments anchor vertebrae while rotating contact members reduce wear, enabling growth adaptation without repeated surgeries.

Pivoting talar arms expand into bone slots to secure fixation in compromised tissue.

A bone screw design constraining Haversian canal area to under 10% of the cross-section.

A uniplanar bone anchoring element uses a flattened screw head and a receiving element with an internal groove to constrain pivoting motion.

Segmented pedicle insulators reduce nerve root irritation and screw loosening by providing a protective barrier with improved grip during insertion.

A dual chamber bone cement mixer combines components via a valve, preventing toxic monomer vaporization and extending working time.

Percutaneous screw channels route tethers via guidewires to stabilize vertebrae, reducing tissue retraction and infection risk compared to open surgery.

A pedicle screw with a reverse spiral cut expands automatically after insertion to increase bone loading and osteointegration.

A resilient clip and flexible membrane secure surgical tools to the skull, enabling controlled tilting without complex mechanical joints.

An integrated surgical device merges hole cutting and fastener insertion using laser-heated polymer components to reduce procedural complexity.

A deformable spinal fixation device expands its channel width to receive connecting rods through percutaneous access.

Nested tulip coupling assembly minimizes profile height to reduce tissue trauma during minimally invasive bone fixation.

Spaced plates attach to adjacent spinous processes, enabling polyaxial movement that reduces nerve root injury risk while maintaining stable fixation.

A lateral spinal fixation system delivers percutaneous fasteners and rods along specific trajectories to enable efficient implant assembly.

An expandable sleeve adaptor enables precise vertebral angle correction and stabilization to resolve alignment trade-offs in spinal surgery.

Geared spinal jack expands between vertebrae to compensate for positioning changes without invasive re-operation.

Self-tapping transverse screws form threads in the connecting portion, preventing screw thread dropout and implant shift for stable spinal fixation.

Spaced-apart optical fibers in a tracking sensor reduce internal friction errors, enabling precise multi-feature anatomical tracking.

A tether tensioning device applies controlled force to flexible tethers between bone anchors.

An expandable vertebral cage uses a threaded wedge to spread arms, preserving natural lordosis and preventing posture changes.

Segmented bores resolve the stability-versus-compression trade-off by enabling dynamic interfragmental pressure while maintaining rigid fixation.