Internal Osteosythesis TRIZ Cases

Deformable slits enable proximal bone fixation with controlled micromotion, reducing implant fatigue failure and supporting early weight-bearing.

Intrinsic extenders and breakoff sections enable rod reduction without external instruments, cutting spinal fixation cost and complexity.

Oblique compression and offset fixation help align metatarsal and tarsal bones while simplifying hallux valgus correction surgery.

A paired plate and screw layout enables same-stage endonasal occipitocervical fusion, avoiding a separate posterior approach and its tissue trauma.

Movable rod segments and hinge joints correct scoliosis while preserving spinal bending and rotational motion with less stiffness.

A flexible two-tube mold forms intramedullary nail spacers that match nail curvature, improve canal fit, and deliver local antibiotics.

A rotatable fixing element temporarily clamps the bone anchor head without loading the pressure piece, improving spinal correction handling.

Angled load flanks and splay control ramps let bone anchor closures install with lower torque while limiting receiver arm splay and stress.

A fulcrum-assisted expandable spinal implant restores lordosis while maintaining disc and neural foramen height to avoid nerve compression.

A semispherical rod end and central clutch lock surgical devices in place, preventing disengagement in confined anatomy and easing follow-on maneuvers.

Placed between split sternal sections, a porous implant scaffold improves compression, limits bleeding, and promotes faster bone fusion.

Patient-specific spacers and an adjustable guide correct ankle misalignment and deformity during revision surgery for more accurate implant placement.

Anchored guides, pilot-hole drilling, and countersinking enable secure facet-joint bone graft implantation with less invasive spinal fusion.

Thermally actuated pumps and rolling bladders use feedback control to adjust vertebrae spacing precisely while limiting catastrophic failure risk.

A revolved shank and plate structure lets surgeons adjust metatarsal head rotation and lateral position with less invasive hallux valgus correction.

Segmented wings and a clamp maintain vertebral spacing with adjustable distraction, enabling less invasive spinal stabilization.

A threaded coupler, nut, and driver clamp a spinal rod to align vertebrae while preserving motion and reducing the need for fusion.

A one-piece preassembled coupling in an intramedullary nail prevents lag screw jamming and medial deviation while improving fixation stability.

A segmented transformative section bends to match the intramedullary canal during insertion, then locks rigidly for stable, less invasive fracture fixation.

Receiver rotation stops and a creep-resistant compression insert keep a polyaxial bone anchor locked despite polymer rod creep.

Integrated load sensors and electrodes track fusion and infection while electrical stimulation promotes bone growth and reduces revision risk.

Complementary male and female load-sharing surfaces distribute bending and off-axis loads to improve fixation strength and reduce loosening.

Integrated cutting structures and threaded adjustment let this bone screw apply controlled joint compression without pre-drilling or extra tools.

Wireless power and bidirectional control let an implantable growing rod adjust scoliosis correction without repeated surgeries.

A flexible two-tube mold replicates removed intramedullary rods to cast antibiotic spacers with precise fit for curved or larger medullary cavities.

Bone-engagement fins, redirected fasteners, and locking clips improve vertebral anchoring stability and help prevent implant dislodgment.

Camera-tracked markers replace array sensors to guide rod insertion with real-time screw alignment images, cutting setup time and motion limits.

A threaded adjusting screw and releasable adapter control fracture compression, limit screw pullout, and support tensile force during healing.

Independent ratchet fixation and a removable extension block let one spinal implant switch between dynamic support and fusion-like stabilization.

Embedded load sensors and electrodes let an interbody spacer monitor fusion, detect biofilm, and stimulate bone growth to limit pseudarthrosis and subsidence.

Offset sensing converts implant rotation into measurable shaft translation, enabling accurate angular placement when anatomy blocks direct view.

Independently inclinable pin cannulas and modular blades improve spinal site access and visualization across anterior, lateral, and oblique approaches.

Retractor blades coupled to pedicle screw passageways create a working channel for vertebral displacement and rod insertion with less tissue trauma.

Segmented negative threads and a locking ring let one intramedullary nail securely fit different locking screw sizes and pitches.

Differential broach teeth compact bone proximally and cut distally to improve hip stem fit, rotational stability, and distal clearance.

A rounded-head bone tie and guided inserter stabilize degenerated facet joints with less invasive, potentially reversible fixation than vertebral fusion.

A polyaxial screw-and-washer implant enables minimally invasive SI joint fusion with graft-filled cavity preparation, less blood loss, and shorter recovery.

A superelastic compression element maintains bone fragment compression despite resorption and resettlement, supporting fracture healing.

A three-point fixation head and set screw improve rod alignment adjustability while resisting slippage and disengagement under load.

Opposed rotating propulsors replace impact insertion, advancing the implant through bone with less trauma and more precise fixation.

Opposing flanges and wings lock a spinal rod cap against splay and rotation while still allowing easier removal during revision surgery.

A multimodal rasp-box osteotome prepares SI joint surfaces to bleeding bone for precise fusion while reducing tissue and neurovascular risk.

A concave spino-laminar prosthesis expands the spinal canal after laminectomy while restoring posterior neural protection and spinal stability.

Stored steering energy lets a vertebral tool curve off-axis through one cannula, reducing invasive multi-path access.

An adjustable sled and lock align the guide to multiple calcaneal plate sizes for more precise pilot hole drilling and screw placement.

A downwardly deployable insert and retainer lock the shank head after rod placement, improving angular adjustment in spinal fixation.

Dissimilar guide flanges and splay control ramps let spinal implant closures lower installation torque while limiting receiver arm loosening.

An inner-sleeve and driver assembly helps place and remove a bone screw in cement-filled vertebrae with fewer instrument changes.

A contoured plate with distributed screws and cable fixation stabilizes the greater trochanter in osteoporotic bone while reducing soft tissue irritation.

A cannulated feeder with a pawl and cantilever arms enables accurate single-step pedicle screw insertion while fitting multiple surgical tools.