Internal Osteosythesis TRIZ Cases

Radial buttress element reinforces lesser trochanter to prevent downward rotation of femur head during healing.

Interleaved arcuate sheets enable multi-plane rotational movement within an angulating bone plate assembly for spinal fixation.

Threaded rod mechanism drives orthogonal distractor arms, eliminating traction table risks and reducing setup time.

Nested conductive shells in a composite probe identify spinal tissue types to prevent nerve injury during screw insertion.

Converging and diverging locking mechanisms stabilize bone fragments to prevent cutout and rotation during healing.

Asymmetric radiopaque target jig aligns hip fracture nails to reduce radioscopic images and radiation exposure.

A segmented artificial intervertebral disc implant restores spinal mobility by replacing damaged discs while preserving adjacent segment movement.

Opposite plates connected by a transverse rod stop central bone growth, correcting axial deformities without uneven inhibition.

Preliminary laminar screw placement stabilizes the lamina before hinge cuts, eliminating drilling risks over the open spinal cord.

A bone plate featuring a sagittal adjustment slot allows flexible screw positioning to prevent mal-alignment and improve weight-bearing stability.

A screw insertion instrument uses a knob assembly and inner shaft to provide secure engagement for pedicle screws.

Mobile stabilizers rotate from a closed to an open position, resolving the trade-off between compact profile size and distraction stability.

A spinal implant uses a hollow connection portion with elongate openings to enable threadless attachment of holding members.

Segmented implantable reservoirs minimize infection risk from frequent skin penetration while providing sustained joint lubrication.

Segmented hip screws with elastic tri-wires resolve the trade-off between rotational stability and easy removal without damaging surrounding bone.

Spatially varying material properties in additive manufactured bone implants resolve the contradiction between structural strength and bone resorption risk.

A guided rod assembly with extended tab tulips and slide members translates into position for spinal fixation.

Interrupted screw threads machine the plate flange during insertion, eliminating cold welding and enabling reliable extraction without torque tools.

An expandable interbody implant uses a double ramp mechanism to drive lateral expansion of spinal components for controlled height adjustment.

Dynamic intervertebral implants enable screws to translate and pivot during subsidence, ensuring proper load distribution to the bone graft material.

A helically slotted spinal rod connector provides controlled axial, bending, and torsional stiffness through elastic deformation.

Segmented components and dynamic clamping allow the rod guide to pivot for precise alignment, reducing tissue damage during minimally invasive surgery.

An integrated fixing element presses the connecting element into the receptacle, eliminating separate holding steps to reduce surgical incision size.

Nested extender uses rotating knob to translate inner sleeve, resolving cumbersome implant delivery complexity in spinal surgery.

Segmented implant modules resolve the trade-off between adaptability to different fracture patterns and device complexity through standardized interfaces.

Nested sleeve and extender secure vertebral constructs via angled locking surfaces, resolving fixation stability trade-offs.

A spinal osteosynthesis system uses a movable locking member with elastic return and pressure means to secure vertebral rods.

A translaminar pedicle anchor suspension system stabilizes vertebral segments using an artificial ligament construct secured by a pig-nose washer.

A surgical instrument with a rotatable blade manipulates vertebrae to correct spinal alignment.

A lateral plate uses a moveable washer in a slotted aperture to adjust bone screw spacing and angulation.

A spinal fixation access system uses a chamfered distal end to insert into the cervical facet joint through a posterior approach.

Snap-fit insertion handle interface mechanically interlocks with intramedullary nail openings to transmit torque and secure axial locking.

A spinal connector uses a rotatable wedge mechanism to secure linear elements against an interference member.

An elongate aperture in a spinal prosthesis enables controlled relative motion, reducing degenerative migration to adjacent vertebrae.

Variable angle locking and mesh constructs distribute spinal loads across multiple fixation points, preventing screw pull-out under high stress.

A wedge-shaped spinal cage uses angled teeth to engage vertebrae and prevent migration.

A temporary encasement covers the screw shaft during percutaneous insertion to protect surrounding soft tissues from mechanical trauma.

A magnetic targeting system guides biocompatible spinal implants using real-time field feedback.

Segmented lamina plate replaces removed posterior elements to prevent kyphosis and epidural scarring after laminectomy.

A modular tulip assembly uses a locking projection and external groove to secure a saddle onto a bone screw head.

A cervical spine fixation plate uses a nested rotating locking part to secure bone screws within a stepped structure.

A cancellous bone allograft coated with human birth tissue composition stabilizes the spine through enhanced biocompatibility and reduced adhesion.

A flexible collet driver engages bone screws directly without pre-coupled tulip heads.

An expandable driver head engages poly-axial pedicle screws without custom tools, enabling rotational withdrawal.

A vertebral cleat uses an elongate keel and spike to provide stable bone contact.

A spinal implant uses a rotatable wing to expand between spinous processes and maintain canal distance.

Spring-biased tabs cover screw heads to prevent backing out, resolving wear and binding issues in cervical plates.

A split locking ring with positioning tabs secures a pedicle screw head within a tulip via elastic deformation and frictional engagement.

Internal rails within the occipital plate eliminate external bulk while maximizing contact area for rigid spinal connection.

A spinal tap marker integrates a flexible member to extend tracking fiducials from buried bone screws.