Internal Osteosythesis TRIZ Cases

A polyaxial pedicle screw uses a cam mechanism to adjust the receiving sleeve orientation within the hull.

Sidewall openings in percutaneous devices guide spinal fixation elements along the spine to seat anchors, reducing tissue trauma and surgical time.

An expandable spacer system adjusts bone separation to restore proper limb length during ankle fusion surgery.

An asymmetric piercing tip and nested plunger assembly reduce surgical time by consolidating multiple instrument insertions through a single dilator tube.

An anodizing process embeds silver particles into titanium oxide pits, preventing coating detachment and reducing infection risk from biofilm formation.

An orthopedic instrument integrates sensors to detect bone interfaces and guide implant placement along a working axis.

Segmented anchoring device places pedicle screws directly into vertebral bodies, eliminating guidewire insertion and reducing tissue damage.

Nested helical titanium wires provide high strength for thick bones while preventing damage through controlled elasticity.

Helical anti-splay flanges prevent arm separation under high torque, maintaining low profile stability in open-headed bone screws.

A surgical plate variable fastener uses a cam mechanism to flex its head diameter for insertion and lock it in place.

Offset locking bores allow freehand screw insertion, reducing operation time and radiation exposure while maintaining angular stable fixation.

An elongated intramedullary shaft integrates longitudinal channels and compression slots to route a tensioning cable for controlled bone fusion.

Segmented retention arms and spherical heads stabilize polyaxial surgical screw coupling against rotational shear stress during minimally invasive insertion.

Nested catheter design contains monomer vapor and air bubbles during in situ mixing.

Segmented clamping device fixes non-cylindrical implant parts to resolve mechanical stability limits in bone areas.

Vacuum extraction removes contrast media from the nucleus pulposus to restore normal pressure, avoiding prolonged elevation that weakens tissue integrity.

A percutaneous double screw system stabilizes vertebrae through a transpedicular approach guided by real-time fluoroscopy.

Segmenting the bone anchor and head into distinct components reduces the insertion profile, improving anatomical visualization during spinal procedures.

An adjustable locking positioning device spans vertebrae to enable precise disc prosthesis placement and reduce vertebral damage risks.

Segmented interlaminar members connect via an adjustable cross-member to stabilize multiple spinal levels, preventing transition syndrome and nerve compression.

Segmented surgical instruments with rolling links and rotation resolve insertion constraints to enable minimally invasive spinal wrapping.

Adjustable plates slide on fixed portions via mechanical actuators, accommodating varying patient anatomies while integrating graft material for bone fusion.

Porous implant shells allow osteogenic cells to migrate into the structure, preventing loosening and maintaining long-term fixation stability.

Segmented cranial clamps anchor spinal rods to skull bone, stabilizing the craniocervical junction despite poor bone quality.

A rotatable crown bone fastener orients a band to secure spinal rods.

A distraction sleeve locks polyaxial movement of a bone anchor assembly to facilitate true parallel distraction.

A cannulated bony fusion implant uses a central lattice structure to promote bone ingrowth through its open architecture.

A fixation assembly secures screws to a holding sleeve using internal threads and aligns the driver with underlying structures.

A surgical driver uses a movable sleeve and actuator to secure fixation devices.

Multi-thrust elements enable sagittal plane reduction without precise rod shaping, resolving assembly complexity and anatomical collision risks.

A spinal implant plate couples to an interbody device via a rotatable attachment member preventing bone screw backout through dynamic force absorption.

Adjustable bearing surfaces on a surgical template reshape the orbito-naso-frontal band, resolving subjectivity in anterior craniostenosis correction.

A segmented surgical retractor component system enables percutaneous pedicle screw assembly placement through integrated structural pathways.

A medical instrument uses a feed mechanism to advance bone contact elements along a guide element.

A vertebral fixation system uses a flexible band to connect pedicle screws and provide adjustable locking mechanisms.

A clamp body and fastener element lock a tether to restrict spinal flexion, while a compliance member distributes forces evenly to prevent mechanical failure.

A magnetic targeting wand guides biocompatible implants through small incisions using pivotal passer elements and magnetic attraction.

A modular knee arthrodesis implant uses a clamping jaw mechanism to secure femur and tibia nails via frictional contact.

A spinal implant uses a distraction guide to pierce tissue between spinous processes and expand the foraminal area.

Anchoring a retractor to the iliac crest stabilizes instrument alignment against patient movement during lateral disc procedures.

A spinal construct adaptor positions a shim between the bone fastener and rod to enable intra-operative height customization.

A bone anchor with a deflectable post and ball-joint preserves spinal motion while providing structural support.

A surgical instrument uses a height controller to translate retractor blades relative to a distractor for precise vertebral spacing.

Ball-and-socket anchors enable controlled spinal motion and secure fixation, resolving the trade-off between rigid stability and clinical adaptability.

An eccentric transpedicular polyaxial screw positions the spherical shaft end offset from the head center to prevent facet joint damage during spinal fixation.

A spinal implant receiver uses a polymeric surface to enable slidable rod engagement.

A vertebral lamina supporting device distributes force across the bone structure using radially arranged concave arc surfaces.