Internal Osteosythesis TRIZ Cases

Segmental derotation via multi-axial screws reduces bone-screw interface stress during spinal alignment.

A lamina plate assembly restores posterior tension bands and protects the spinal cord following laminectomy.

Aligned strut scaffolds restore anisotropic support in osteoporotic bone, resolving isotropic filler trade-offs that compromise fracture resistance.

Ultrasound ruptures a PLA membrane to release antibiotics from a spinal implant sheath, preventing bacterial adhesion.

Segmented links with locking ribs adapt to patient contours, resolving the trade-off between mechanical strength and anatomical fit.

A dynamic spinal stabilization apparatus uses flexible elements within a housing to allow controlled physiological motion.

Segmented connector assemblies with threaded adjusters resolve the trade-off between fixed geometry manufacturing and infinite anatomical size adaptability.

Segmented tack and anti-loosening sleeve fixate tendons in osteopenic bone, preventing joint instability.

Rotating vertebral elements replicate anatomical movements while preventing adjacent disk degeneration caused by rigid fusion.

Real-time signal monitoring stops screw electrode rotation at predetermined depth to prevent cochleovestibular breach and hearing loss.

A flexible intramedullary nail uses a serpentine slot to conform to bone curvature, resolving insertion difficulties and fracture stabilization trade-offs.

Viscoelastic bushings limit longitudinal travel in telescopic screws, preventing excessive length variation during orthopedic procedures.

A porous titanium bone screw features osteoconductive hydroxyapatite coating to enhance osseointegration.

Directional dispersion apertures in the bioinjection tip target bone fractures precisely, preventing damage to surrounding soft tissues.

An anchor member employs an elastic element pressing a stud against a rim to prevent gravitational movement during implantation.

A customized subcutaneous chest bar paired with channeled securing straps directs tension forces to correct anterior chest wall deformities.

Patient-specific cutting guides correct CT scan artifacts to determine prosthesis size and position.

A cannulated screw with a nested solid stem delivers high viscosity bone cement while preventing fluid reflux into the device.

A bone implant system uses a porous carrier to attach demineralized bone matrix material for precise placement at the surgical site.

Elastic cord applies adjustable tension to lamina hooks, preventing post-surgery kyphosis after laminectomy.

A curved intramedullary implant uses a flexible distal portion and guide sleeve to navigate bone entry paths.

Pivotably coupled handles with distinct roller geometries provide separate mechanical advantages for bending rods of varying diameters.

A self-locking mechanism secures cervical screws within a tapered aperture slot.

A spinal fixation coupling mechanism secures a bone screw and lateral rod using an integrated nut and collet assembly.

Coupling element translates stabilizer bar force to fixation head, resolving suboptimal spine alignment and stability during fusion procedures.

A surgical system manipulates vertebral tissue using an implant support, sleeve, and adaptor.

Cylindrical osteosynthesis nail with axial bore and offset through-holes reduces infection risk by minimizing skin incision size.

A tubular cortex penetrator with a beveled cutting edge creates precise lateral bone openings.

A dual-purpose surgical clamp uses pivot axes to switch between compression and distraction modes.

A sonolucent craniofacial implant enables direct optical and ultrasonic visualization of underlying brain anatomy during surgical reconstruction procedures.

Removing corticosteroids from the fibrin sealant composition restores near-normal disc height and hydrostatic pressure while sealing annulus fibrosus leaks.

A surgical planning system uses C-arm spinal images to determine pedicle screw entry points and insertion paths without CT scans.

Valgus rod engagement members lock resection instruments without pins, resolving femoral geometry complexity and improving cut accuracy.

Derotation sleeve prevents frangible member breakage during rod reduction.

A composite spinal implant uses textured surfaces to provide frictional engagement with the facet joint for stable distraction.

Segmented facet joint prostheses replace degenerated articular surfaces to restore spinal alignment without fusion.

Notches segment the convex surface to redirect stress peaks, preventing stability failure in osteosynthesis plates.

Serpentine spring rod with inelastic members limits extension while preserving natural spinal motion.

Midline pivoting wing implant stabilizes vertebrae without lateral bulk, preserving surgical access for bone graft placement.

Curved shafts and radial splines secure non-parallel spinal rods while minimizing interference with neural structures during surgery.

A modular spinal fixation screw uses a collet with a living hinge and scallops for rapid bone screw attachment.

Segmented modular components and adjustable transverse connectors improve adaptability to patient anatomy without increasing device complexity.

A multi-mode torque driver uses an anti-backdrive unit to switch between manual and motorized operation for precise pedicle screw insertion.

Tapered interconnect surfaces create frictional interference to secure bone segments, resolving stability and complexity trade-offs.

Segmented bone distraction device restores vertebral height by controlling expansion to prevent uncontrolled deformation.

A thermoplastic polycaprolactone mass forms a crystalline skin upon cooling, containing the injected material to prevent extravasation in osteoporotic bone.

A modular elbow prosthesis uses interlocking retaining mechanisms to secure the articulating component to the stem structure.