Internal Osteosythesis TRIZ Cases

Longitudinal inner component translation applies distal force to compress polyaxial screw receiving members, enabling intraoperative deformity correction.

Segmenting the anchor screw from the targeting wire simplifies placement trajectories, reducing surgical complexity while maintaining fixation stability.

A polyaxial bone anchor uses a collet to pivot an anchoring member up to 50 degrees from its central axis.

A threaded plunger converts rotational input into axial motion for bone filler delivery.

A unitary surgical support base integrates a hinge platform and mounting portion to enable selective incremental rotation of components.

Dynamic collapsible clips conform to irregular rib contours, reducing fastener pull-out risk and eliminating extensive pre-measurement.

Nested locking elements join spinal rods while maintaining a compact profile to avoid interference with adjacent screws.

A bone fastener assembly instrument uses a spring bias mechanism to align and secure two-component fasteners during surgery.

A transverse connector secures a flexible tether to an elongate arm portion for receiving a spinal rod in a stabilization system.

An implant system uses anchored pin fasteners to secure prosthetic joints directly to bone tissue.

Segmented anchors and a connecting rod stabilize vertebrae via minimally invasive insertion, reducing patient pain and hospital stay duration.

Integrated measurement sensors provide real-time angular orientation data, reducing misalignment risks during spinal stabilization procedures.

Sequential serrated dilators engage bone to prevent guide wire detachment, reducing surgical time and contamination risks in minimally invasive spinal fusion.

A segmented articulating clamp merges orientation adjustment and rod retention into one mechanism, reducing operative time while maintaining fixation security.

Segmented filaments provide customized tensioning across spinal segments, resolving adaptability versus complexity trade-offs.

A bioabsorbable band system uses a pawl teeth locking mechanism to secure bone fractures with precise tensioning.

Reduced-thickness plate or curved connectors join offset rods between adjacent bone anchors, avoiding vertebral level skipping.

Rotating the base member relative to the receiver resolves stability-versatility contradictions, enabling optimal vertebral deformity correction.

Segmented transsacral implants with porous composite structures reduce tissue trauma while maintaining structural strength for reliable fusion.

A hybrid bone fixation element combines a threaded proximal segment with an expandable distal stent to engage both cortical and cancellous bone structures.

Recesses in the transverse bore inner wall redistribute stress to prevent breakage at the critical weak point.

Telescoping elongate members with aligned holes and a locking element enable percutaneous insertion of an adjustable spinal rod.

A modular pedicle screw assembly uses interchangeable inserts to enable versatile surgical configurations.

An implantable sensor bridge with integrated control circuitry employs dynamic time-slot scheduling to prevent data collisions among multiple devices.

A rigid guiding member inside a PEEK bone implant hole restores torque feedback and prevents screw misplacement in flexible plastic structures.

An integrated tube system with reversible fastening maintains open angular positions, reducing bulk instrumentation and simplifying sterilization.

An expandable intervertebral implant uses an outer balloon element to match disc space contours and height.

A bidirectional distractor system uses ratcheted arms and screws to enable controlled vertebral separation and compression.

PEKK resurfacing devices restore natural spinal motion and alleviate bone-on-bone pain without invasive fusion or biomechanical alteration.

A transverse coupling connects multiple implant extensions via pivotable joints to enable simultaneous vertebral derotation adjustments.

Extracorporeal rod contouring via percutaneous extenders matches pedicle screw geometry, reducing tissue trauma during spinal fusion.

A pivotable interbody implant instrument uses movable members to capture and lock the device for precise vertebral positioning.

A photodynamic joint spacer expands within a bone cavity to anchor an articular member.

Spring-mounted brackets in an artificial spinal disc replacement system maintain range-of-motion while reducing stress on adjacent vertebrae.

Segmented anchor assembly secures flexible spacer between lumbar vertebra and sacrum, resolving absence of spinous process.

Deflectable retainer tabs resolve the contradiction between angular orientation flexibility and assembly complexity in spinal stabilization systems.

Elongate derotator members feature axial channels enabling tool access to implants within severely malaligned vertebrae.

Adjustable elongated members with complementary surfaces and a locking mechanism enable precise angular positioning of bone fixation elements.

CT-guided implant placement targets high-density sacral bone, reducing neural damage risk while enhancing mechanical stability across the sacro-iliac joint.

A resilient closed curve band in a spinal implant bore prevents bone screw backout by allowing ingress but blocking egress.

Segmented artificial hip joint prosthesis uses an elastic shock-absorbing layer to mitigate abnormal strain, preventing dislocation and loosening.

Segmented connector locking structures prevent wire loosening by deflecting under capstan puller pressure to lock bone fracture fixation wires.

A universal coupling device accommodates different bone anchor heads via a standardized receiving part and pressure member.

Segmented connection element prevents bar disengagement during spinal fixation by applying counteracting force via a wire spring interference mechanism.

A bioabsorbable composite implant reinforces fractured bones through minimally invasive injection of a polymer matrix with reinforcing rods.

A flexible fabric stabilizer replaces rigid wires on an offset pectus bar, preventing intercostal nerve pinching and rib inflammation.

Stacked flexible members in a bone fixation device bend to match bone contours, reducing surgical time and inventory needs.

Retrograde insertion of a bone nail avoids poor proximal bone quality while a lateral plate distributes mechanical loads to enhance fixation stability.

An expandable spinal access device provides a stable surgical passage for instruments through an adjustable sleeve mechanism.