Internal Osteosythesis TRIZ Cases

Gear mechanism converts rotational force into linear motion to adjust vertebral distances, eliminating instrument switching that reduces visibility.

A locking assembly constrains sliding along an elongate orthopedic device using a biasing mechanism and clamp.

Two-piece insert member accommodates larger screw shank diameters within a polyaxial spinal fixation housing.

Deployable blades in a porous bone fixation device resolve the trade-off between easy insertion and long-term multidirectional stability.

An adjustable implant system uses expandable wedging members to distract spinous processes for minimally invasive spinal stenosis treatment.

Modular adjusters change vertebral spacing to prevent nerve compression while minimizing soft tissue trauma during minimally invasive spinal stabilization.

A tibial baseplate spacer coupling attaches to lateral or medial sides to maintain minimal distance between tibia and femur.

Integrating capacitive plates within a spinal set screw bore enables real-time force monitoring, preventing implant loosening.

Segmented coupling mechanism retains preexisting hip implants while stabilizing peri-prosthetic fractures, avoiding revision surgery morbidity.

A transverse linking member extends through the spinous process with coupling assemblies to secure elongate connecting members along the spinal column.

A frictionless pivot member interconnects vertebral bodies to minimize mechanical wear in dynamic spinal stabilization systems.

A multichannel cannula integrates an expandable portion with a cement delivery channel to streamline vertebral restoration procedures.

Rotating flush cam locks cable around bone, eliminating bulky external tools and improving surgical maneuverability.

An expansion-only split retainer ring secures a pivotal bone anchor against pull-out forces during spinal reduction.

Dual-radius curved central section adapts to linear tibia canals, minimizing insertion force while maintaining structural stability.

Segmented coupling members with deformable hinge portions enable dynamic spinal motion preservation while providing rigid fixation at attachment points.

Helical orthopedic fasteners use compound parabolic petals to compress trabecular bone bridges, reducing laceration trauma and improving anchoring stability.

Segmented fixation blades replace bulky screws to conserve bone tissue, reduce insertion time, and maintain clear visibility at the surgical site.

A spinal fixation connector with a variable angle mechanism adjusts linkage member alignment.

A pretensioned inner cord surrounded by an elastomeric spacer provides dynamic spinal stabilization through sliding engagement and adjustable tension.

An intramedullary nail uses a threaded rod and connecting nut to perform distraction and compression, eliminating bulky external fixators.

Movable fastening elements on mating connectors centralize spinal fixation plates to prevent neural contact during insertion.

Vertebral attachments with rare earth magnets generate repulsive forces to separate adjacent vertebrae.

Strain sensors embedded in bone plates detect nonunion or malunion by comparing force data, enabling early clinical intervention.

A coupler and latch mechanism joins an aiming guide to an insertion handle for precise instrument targeting.

Infrared sensors digitize screw positions to drive automated rod bending, eliminating subjective manual adjustments and reducing surgical time.

Flexible rods enable dynamic spinal stabilization via minimally invasive pedicle insertion, reducing surgical trauma and patient pain.

A hollow bone screw uses a temporary pointed rod to drive insertion, then removes the rod to leave a safe blunt tip.

Cylindrical pedicle insulator apparatus with anti-rotation fins surrounds fixation screws, preventing nerve root irritation while maintaining screw stability.

A bone anchor uses a rotatable distal toggle to abut cortical bone interior surfaces for secure fixation.

Segmented lateral bridges and variable-thickness bars distribute forces across the chest wall without invasive tissue fixation.

A woven retention device with interwoven filaments distributes pressure from a bone screw to the surrounding tissue.

An implantable tension device uses an elastic-biased rotating spool to maintain cable tension, preventing loosening from bone movement.

Fluoroscopic imaging registers patient-specific anatomical planes without invasive markers, eliminating setup time while maintaining high measurement precision.

A roller element winds a tether to create frictional retention, reducing surgical invasiveness and improving spinal stability.

Viscoelastic shock-absorbing pads distribute compression forces to reduce wear on connecting elements in dynamic posterior stabilization.

An intramedullary component anchors a surgical tracker array inside the bone canal to secure reference points during procedures.

Offset cam locks apply asymmetric forces to prevent loosening, improving structural support and reducing surgical complexity.

Segmenting fixation into a vertical spacer and facet screws reduces operative time, blood loss, and soft tissue trauma compared to pedicle screw systems.

Segmented bone anchor and body components enable in-situ assembly, resolving surgical visibility constraints during spinal stabilization.

Segmented fixation members with dovetail threading resist rotational motion and pull-out forces at the sacroiliac joint.

Interlocking profiles engage the nail to establish predetermined angular orientation, resolving surgical alignment precision challenges.

An oblique auxiliary leg on the fixation plate distributes forces effectively, resolving the trade-off between positional flexibility and resistance to bending.

Segmented rod inserter tools enable dynamic rod shaping via guide rollers, resolving the trade-off between surgical precision and device complexity.

An integrated strapping device with an adjustable loop and closing member stabilizes periprosthetic fractures.

A hip fixation element with a compliant region enables dynamic compression, reducing peak loads at the implant-bone interface to prevent femoral head cut-out.

A patient-specific drill template guides spine screws into vertebrae using a hook-shaped main body for precise placement.

Asymmetrical spinal stabilization rods use independent limiting devices to control vertebral flexion and extension ranges.