Internal Osteosythesis TRIZ Cases

A plastic jack insert establishes vertical spacing between lumbar vertebrae using a screw lift mechanism.

A cervical plate fusion system uses a cam surface on the screw head to drive a cam follower, creating a positive mechanical lock against axial movement.

Nested dilators in a multi-stage cannula assembly enable precise percutaneous spinal access, reducing tissue trauma and recovery time.

Hydraulic pistons extend within a distractor unit to create precise vertebral gaps, reducing tissue damage during anterior corpectomy.

Posterior spinal implant with adjustable titanium flanges stabilizes lower lumbar vertebrae to sacrum, alleviating stenosis symptoms.

Alignment guide system secures cervical spine plate to distraction pins for precise midline positioning during anterior fusion surgery.

Self-tapping metal screws create threaded channels in nonmetal implants to resolve insufficient locking force and complex surgical procedures.

A surgical instrument positions an expandable implant using a pressurized fluid source for precise placement.

A dynamic bone fracture plate assembly uses a spring to apply compressive load between male and female portions for stabilization.

Robotic sculpting creates custom cavities to minimize protrusion while maintaining structural strength.

Segmented osteoceramic conduits transport multipotent mesenchymal cells to accelerate functional bone regeneration.

Curved cutter and wedge tip create precise bone cavities to prevent screw backout and enhance long-term construct stability.

Intermediary cable connectors stabilize thin ribs, preventing splintering and tissue irritation during thoracotomy procedures.

Replacing manual pressure, the ultrasonic handpiece uses vibration to fluidize and distribute fixation cement evenly within bone screws.

A tensioning device uses a spring-loaded piston to apply precise cord tension for spinal deformity correction.

Spherical sidewalls in the bore geometry enable 10 to 30 degree angulation while eliminating extra anti-rotation components.

A resilient nitinol bone plate clamps onto cortical rib sections to provide secure fixation without penetrating screws.

Segmented components enable single-drive sequential locking, resolving the trade-off between fixation reliability and surgical handling ease.

Locking hinge mechanism constrains vertical and anterior-posterior movement, enabling straight or sloped openings while reducing lateral cortex fracture risk.

Poly-axial connectors and angled screw bores allow the occipital plate to adapt to anatomical variations while maintaining structural strength.

Segmented stiffening and memory metal resist element forces to maintain a curved path, enabling precise vertebral augmentation.

A monolithic spinal rod insertion instrument uses moveable arms to retain the rod during placement.

A cutout adjacent to the transverse bore redistributes stress across the intramedullary nail body.

A headless compression screw uses a variable thread pitch to correlate torque with compressive force.

A hydraulically controllable spine cage expands in three dimensions to distract vertebral endplates and stabilize motion segments.

Scoring the proximal end reduces separation force, enabling accessible removal by medical professionals without requiring significant manual effort.

Lateral rod engagement eliminates longitudinal alignment complexity while maintaining rotational stability.

A surgical instrument features a ratcheting mechanism with locking surfaces and an actuator to incrementally tension longitudinal members.

A spinal rod reducer uses a rotating sleeve assembly to compress and align the implant into bone screw housings.

Bone pins manipulate fractured vertebrae segments to restore height, avoiding unpredictable balloon expansion along trabecular bone paths.

A fracture fixation plate uses a cover sheath to secure bone screw heads within recessed anatomical contours.

Deployable interspinous implant wings limit longitudinal movement, reducing surgical trauma during minimally invasive insertion.

An asymmetric inclined main body with a spherical chuck enables three-dimensional rod fixation, preventing surgical instrument interference.

Segmented retractors anchored via pedicle screws provide stable medial expansion, resolving bulkiness and tissue trauma in minimally invasive spine surgery.

Telescoping lateral plates adapt to varying spinal anatomy while a unified locking tool reduces instrument complexity and muscle retraction.

A polyaxial bone screw system with a pivoting rod mechanism aligns vertebral segments through small incisions.

A spring cage structure expands to receive and lock a pedicle screw head within a spinal fixation connector body.

A movable fulcrum assembly translates linear driver motion into rotational leverage, resolving crowded instrumentation conflicts during vertebral alignment.

An integrated gear mechanism tensions flexible spinal implants, avoiding pedicle damage while ensuring stable alignment.

Reinforcing members distribute loads from closure wires to prevent bone damage while enabling easier re-entry for subsequent procedures.

A segmented intramedullary rod uses asymmetric ridge and groove mating surfaces to prevent rotational movement between elongate members.

A spinal rod reducer uses a hinged arm assembly to engage bone screw assemblies and position rods.

A surgical distractor uses a stainless steel cable lasso to loop around bone screw shanks for precise vertebral manipulation.

Flexible member deploys to measure distance between anatomical landmarks, eliminating trial-and-error implant sizing.

An oblique lateral spinal implant enables minimally invasive access to the L5-S1 disc space using a 0-30 degree surgical pathway.

A spring-biased engagement arm controls the sternal clamp position through a ratchet bar interface.

Offset spinal connector merges rod receptacles to reduce surgical time and component count.

A lingual splint uses a horizontal locking pin and vertical key to secure maxillary and mandibular jaws together.

Segmented facet reinforcement device with lumens enables rapid joint stabilization, reducing procedure time and complexity compared to slow fusion methods.