Internal Osteosythesis TRIZ Cases

Flexible instrument sections and tracked markers provide real-time force feedback for controlled spinal deformity correction.

Living hinges and an expandable cavity let interspinous implants adapt to vertebral motion through smaller incisions.

Cam-actuated anchors deploy translationally from a compact profile, improving interbody stability while limiting bony endplate damage.

A detachable clamp and auxiliary rod guide spinal deformity correction, reducing rod damage and surgical complexity.

Spring-stepped pins and telescopic stems let the spinal jack be reconfigured after implantation for changing vertebral support.

A set screw secures a flexible tether in the bone screw head to support spinal alignment and address hook-related pedicle damage.

A pre-positioned split retainer and tool-deployable insert secure pivotal bone anchor rotation and resist pull-out forces.

This case uses a polyaxial bone anchor with helical wings to improve pull-out and rotational stability in weakened vertebrae.

This case uses a compressible ring retainer and twist-in-place insert to capture the shank and maintain angular fixation.

This interspinous implant uses mating teeth, recesses, and stimulation to support controlled motion and bone growth.

Open-network implant bodies improve bone purchase and osseointegration while resisting rotation and pull-out at the sacroiliac joint.

Brackets, wings, plates, or hooks add auxiliary fixation points to bone anchors, limiting loosening without extra surgery.

A breakaway implant shifts from rigid fixation to controlled joint motion.

Variable-angle screw openings target the posterior malleolus while limiting soft tissue interference and screw prominence.

This case uses a monolithic spinal fixation rod with varied dimensions and smooth transitions to reduce stress concentrations and fatigue.

This case shows how interchangeable rod diameters and closure elements support versatile bone anchoring with simpler locking steps.

A two-part concave neck redistributes load in polyaxial bone anchors, improving fatigue strength and angular flexibility.

This case uses tensioned elongate members around vertebral processes to limit flexion without pedicle screw or rod fixation.

A bottom-loaded fastener, piston, and ring reduce tool complexity and surgical-site size during minimally invasive vertebral fixation.

A rotatable extramedullary portion adjusts alignment while an intramedullary portion stabilizes bone sections with less visible scarring.

A rotatable wire and sliding coupler guide bone plate placement, supporting stable fusion and precise beaming screw insertion.

Helical wings secure weakened vertebrae without bone cement-free augmentation.

This case uses a drag-lock anchor interface and adjustable retractors to stabilize instruments without obstructing spinal disc access.

This case uses varying thread pitches and detents to prevent connecting-screw loosening during intramedullary nail insertion.

Compliant wings secure the retractor to the access tube while allowing repositioning and clearer treatment-site visualization.

Independent articulating components correct scoliosis and lateral curvature while preserving motion during spinal reconstruction.

This case shows how shims and screw mounts connect retractor blades to implanted pedicle screws for precise retraction with less trauma.

A flexible biologically inert enclosure protects a surgical core during sterilization for reuse.

Upper and lower joint components, posterior support, and robotic guidance address deformity while preserving spinal motion.

A dual-passage portal delivers a geared, ratcheting bone tie to stabilize facet joints and promote spinal fusion.

A lockable ratchet mechanism delivers rapid or fine rod reduction, resists high forces, and supports easy instrument removal.

Separate plates and intramedullary rods provide adaptable fixation for fractures and osteotomies near the rib head and transverse process.

A lead screw and ratchet mechanism automate stylet retraction, reducing insertion interference while preserving trajectory guidance.

This case shows how segmented rod reducers use a drive knob and translation unit for controlled seating in constrained access.

Cross-hole post screws, removable guides, and caps support aligned fixation while preserving bone and enabling later fusion.

Proximal and distal locking, guide wires, and ratchet retention improve fixation alignment while limiting cutout and rotation.

A disposable spring-locked tool simplifies implant insertion and avoids sterilization.

This assembly uses a resilient open ring positioner to align the retainer, enabling reliable snap-on capture and pivoting motion.

A three-part sleeve and rod assembly couples to fenestrated screws, guiding bone cement through channels and fenestrations.

Modular jaws secure retractor blades to bone implants, maintaining a stable surgical corridor without repeated screw adjustments.

Preoperative planning, vertebral reshaping, and navigation guide prosthetic placement for precise correction with preserved spinal motion.

A lateral implant compresses the SI joint through a posterior implant window, reducing micromotion and supporting bone ingrowth.

Image-guided spinal implant templates improve placement precision while limiting invasiveness.

A rotatable magnetic ring enables precise, patient-operated bone implant length adjustments.

Cannula-mounted localized sensors detect vertebral movement missed by remote markers and flag global navigation inaccuracies.

Separate slatted tiers form non-linear bone-ingrowth pathways, reducing machining complexity while supporting implant fusion and stability.

A coupled bone plate and joint prosthesis use adjustable interfaces to align implants and support fracture repair during joint replacement.

This case shows how a press-on tulip assembly reduces bulky preassembly and supports less invasive spinal fixation.

This case applies a bioabsorbable adhesive buttress to the anvil or cartridge to reduce staple pull-through and tissue tearing.

Embedded electromagnetic reflectors enable remote assessment of bone regeneration without active sensors in the distraction device.