Internal Osteosythesis TRIZ Cases

A rotatable L-shaped connector joins two spinal rods using set screws to secure fixation.

A monolithic blade-screw connects to tubular members for precise percutaneous spinal fusion alignment.

An intramedullary carbon fiber sleeve accepts injected polymer to bridge fractures, eliminating large incisions and MRI interference.

Remote actuation adjusts tether tension to resolve the trade-off between spinal stability and flexibility without invasive surgery.

Segmented biocompatible links in a flexible chain implant augment fractured vertebrae while preventing cement leakage.

A sliding sleeve-like housing prevents tissue compression on separated shell parts, maintaining a stable tunnel-like access channel for bone anchor procedures.

Sliding elements permit interfragmentary motion to resolve stiffness-healing trade-offs.

Flexible spinal tension band restricts vertebra motion to reduce stress on adjacent discs.

Sliding bone fixation elements on a resilient elongated element adjust automatically as the spine grows, preventing fusion and reducing re-operation needs.

A sensor-equipped implantable bone reshaping device transmits biological data wirelessly for remote actuator adjustment, reducing surgical risks.

A spinal connector uses a bulbous head to lock implant position and enable rotational angle adjustment.

A dual-stage expandable interbody device uses timed wedge and linkage blocks driven by a single screw to achieve significant height expansion.

A polyaxial bone anchor uses a pressure element to exert friction on an oversized head for temporary clamping.

A self-actuating growing rod system uses a hydraulic mechanism to provide continuous distraction.

A patient-specific alignment guide directs bone screws through preconfigured openings.

Segmented arms insert independently and nest within a ball joint to secure fixation while minimizing tissue damage during spinal stabilization.

Dynamic compression plates enable post-implantation realignment of bone fragments without device removal.

A spinal implant system featuring a threaded distal portion and a movable compression device that applies force to stabilize bone fractures.

A biodegradable metal-polymer composite medical implant forms a 3D structure via energy beam sintering in an oxygen atmosphere.

Resilient finger elements axially lock the guide barrel to the bone plate, ensuring precise screw placement in constrained spinal environments.

Scalloped pockets retain a compression member to stabilize fractures without manual maintenance or complex movable components.

Nested locking screws prevent bone screw backout in spinal fusion implants by engaging internal threads to ensure stable vertebrae fixation.

A polyaxial bone screw uses a housing notch to increase pivotal movement, resolving limited angulation options in spinal fixation.

A surgical aiming device uses a button and lever to lock the guide sleeve via an elastic member.

Asymmetric arms enable oblique insertion of a bone drilling cover device, reducing tissue filling and structural damage during surgical procedures.

A flexible implant changes length to stabilize scapular motion during arm movement.

A modular polyaxial bone screw assembly uses a resilient collet to lock the tulip head orientation on the bone screw.

Segmented anterior plate and nested compression screw pull lag screw caudally to stabilize odontoid fractures without complex external mechanisms.

A spinal implant connection assembly uses dynamic clamping elements to secure anchors despite angular variance.

Serpentine slots in a hollow connecting rod form interlocking teeth that accommodate nonlinear misalignment while maintaining structural integrity.

A woven retention device with interwoven filaments maintains pore sizes to promote bone ingrowth.

Resilient teeth on a superelastic ring absorb cyclic loading to prevent gap formation between bone segments.

Layered continuous fibers on a thermoplastic core resolve the contradiction between mechanical strength and X-ray visibility in orthopedic implants.

Dual-channel bone screws apply venturi suction via fenestrations to remove necrotic tissue and prevent pin tract infections.

A spinal connection assembly uses a side-loading housing and arcuate guide surfaces to capture connector elements without preloading.

A pivotal screw assembly with a rotatable body member and constrained insert aligns spinal fixation rods without cross-threading.

A fastener with an interference section modifies the implant passage during insertion to create a self-locking mechanical connection.

Segmented drill guides and spoon tools establish accurate femoral component placement, resolving anatomical complexity challenges in unicondylar knee surgery.

A bone screw assembly features a through hole in the head that receives a second screw at an acute angle to enhance fixation stability.

Deployable distal blades and a movable proximal anchor stabilize interspinous spacers, preventing migration during minimally invasive placement.

Dynamic elastic constraint prevents over-flexion and reduces adjacent segment morbidity while maintaining physiological mobility.

An implantable housing contains a drive mechanism that moves an adjustment rod axially and rotates it about a primary axis for bone positioning.

Segmenting the extender into joined side walls reduces material usage and manufacturing complexity while maintaining structural strength.

A staple inserter uses a decompression member to deflect a staple bridge for precise leg placement.

A pedicle perforator system uses a protruding centering device to guide screws into the spinal column.

Porous metal anchors secure acetabular cups via bone ingrowth, eliminating complex screw fixation.

Expandable balloon catheter delivers chemical denervation agents to the basivertebral nerve.

An expandable socket contracts around bone fixation heads to resolve coupling security versus insertion ease.