Internal Osteosythesis TRIZ Cases

Porous calcium phosphate particles bound by biocompatible polymers allow injectable delivery of large mineral sizes for improved osteoconduction.

A surgical instrument uses a lead screw to tension and release spinal implants, resolving the trade-off between stability and device complexity.

A segmented intramedullary nail uses a rotatable bolt to compress ankle bones.

Flexion-first technique using intramedullary rod tensioning matches extension gap, reducing anterior femoral notching risk.

A modular spinal fixation device subdivides load-bearing superstructures to enable precise placement of spacers and bone graft material during minimally invasive procedures.

Optical tracking cameras register fiducial markers to map spinal alignment, eliminating radiation exposure and reducing surgical workflow disruptions.

A drill guide instrument featuring visual and tactile references to indicate maximum allowable pilot hole angles.

A U-shaped interspinous device features a ratcheting bone graft receptacle for secure interlaminar placement and adjustable depth positioning.

A spinal implant features a curved shank and pivotally coupled housing to secure fixation rods within the sacrum.

Connecting bar features a protruding lug captured by a longitudinal slot in the connecting part for secure assembly.

Spring-like contours in a unitary spinal spacer allow controlled vertebral motion while maintaining stable fixation.

Expandable wedging members adjust spinous process spacing to increase spinal canal volume, relieving nerve compression without invasive surgery.

Lateral engagement by a pivoting lever body applies downward force on spinal rods without obstructing the saddle opening for set screw introduction.

A sternal osteotomy guide and fixation system using intra-sternal shims, tie members, and ratcheting brackets.

An expandable interbody cage increases surface area contact with vertebrae through medio-lateral plate movement.

Polycaprolactone spinal cages use calcium phosphate coatings to buffer acidic degradation products and reduce stress-shielding.

An asymmetric interspinous spacer limits lumbar extension to relieve stenosis without invasive bone removal.

Pivoting levers actuate a rod reducing assembly to seat fixation rods, resolving the contradiction between operational ease and device complexity.

A cannulated tool tensions and crimps bone fixation cables internally through a single guide channel.

A dynamic interspinous device uses a jointed plate structure to allow relative motion between superior and inferior spinous processes.

A processing unit adapts vertebra model data sets to patient-specific image data for precise pedicle screw placement.

A composite inflatable spacer employs distinct balloon compressive moduli to distribute load, mechanically lock spinous processes, and prevent subsidence.

A spinal implant tulip and saddle assembly uses a rotary lock to constrain rotational movement between components.

A sternal closure band uses a threaded rod to apply adjustable tension for bone immobilization.

A composite osteosynthesis implant combines a load-bearing metal core with an anatomically shaped plastic shell via overmolding.

Resilient anvil elements enable controlled axial displacement in a bone plate, stimulating secondary healing through dynamic compression.

External magnetic fields rotate internal fasteners to adjust rod tension, eliminating invasive surgeries and reducing patient morbidity.

A telescopic cranial fixation device accommodates bone flap movement to manage intracranial pressure changes.

Pedicle screw anchoring enables intervertebral motion stabilization when spinous processes are absent.

A hollow expandable member stabilizes anatomical structures via fluid inflation, preventing over-distraction damage during surgical implantation.

Sloped compression holes translate fixation elements to seat osteotomy cuts, resolving difficulty achieving proper bone alignment.

A spinal correction system uses a transverse coupler to constrain lateral translation while allowing axial sliding and rotational movement of the rods.

Segmented prongs on a central torsion bar absorb torque to prevent relative rotation of scaphoid and lunate bones.

Segmented connection members with ball joints enable multidirectional articulation, accommodating posterior cervical spine anatomical variations.

A dynamic spinal stabilization collar uses a convex bore profile to facilitate sliding rod motion.

Segmented components and unilateral insertion preserve ligament integrity while resolving stability-bulk trade-offs in spine surgery.

A bone anchor fixture separates laser and MR probes to enable accurate temperature correlation.

Multi-axis adjustment in the cross-connector accommodates non-parallel rods, reducing material fatigue from bending while maintaining secure fixation.

Segmented male and female connection portions overlap single holes for a plug member to distribute load across the interface, reducing assembly complexity.

Post-operative adjustment of the energy absorber resolves trade-offs between precise load control and maintaining natural joint mechanics.

Superelastic nickel-titanium barbs in a dynamic bone anchor provide strong fixation while allowing controlled motion to prevent loosening.

Segmented tubes protect tissues and maintain visibility during posterior spinal fusion, resolving trade-offs between safety and visual field obstruction.

Dynamic bending blocks enable precise tissue removal in spinal stenosis, reducing nerve injury.

Segmented C1-C2 spinal implant accommodates anatomical variations through adjustable arms and spring-loaded serrated teeth for stable immobilization.

Segmented asymmetric fasteners modulate vertebral length to correct deformities without compromising attachment integrity.

Articulating implant connectors lock obliquely angled rods via rotatable bodies, improving stability in constrained cervical spine spaces.

An elastic insert eliminates play between the screw and bore, ensuring stable bone fixation.

A spinal correction system uses asymmetric pedicle screws to apply tailored corrective forces for three-dimensional deformity alignment.