Internal Osteosythesis TRIZ Cases

A resilient limiter and catch maintain minimum bone graft compression during spinal fusion while allowing controlled telescoping motion.

A Cartesian robot arm with independent x-y-z control and tracking markers improves surgical instrument localization by avoiding joint error buildup.

A stem, cup, and offset plate reconstruct the shoulder after severe proximal humerus loss, avoiding bone graft shaping while restoring stability.

Delivers circumferential blue light evenly along an intramedullary fiber to treat osteomyelitis locally without systemic antibiotics.

Alignment guides, radiographic references, and a rotation arm improve percutaneous screw placement and bone fragment fixation in bunion repair.

A stepped K-wire pairs different insertion and driver diameters so one powered driver can place varied pin sizes with less hardware change and bone trauma.

Intersecting receiver tool features support compact bone anchor handling while enabling rigid-elastomeric rod assemblies for protected spinal motion.

An axially movable pressure member enables temporary head locking and easier spinal rod adjustment without constant instrument attachment.

Ultrasonic vibration helps remove bone with lower axial force and torque, improving orthopedic implant placement precision in minimally invasive surgery.

A cradle-and-clamp cord channel holds one or more spinal tether cords to limit wear, prevent overtightening, and reduce tissue erosion.

A radiopaque fixed jaw and curved clamp teeth enable narrow-field fluoroscopic registration and stable spinous process tracking during patient movement.

A threaded sliding block deploys locking bone spikes after insertion, improving sacroiliac joint fixation while limiting implant movement.

An outer locking ring enables in situ coupling to an implanted bone anchor, allowing temporary locking and adjustment with less tissue intrusion.

A rotatable locking ring lets surgeons lock the anchor head independently of the rod, easing spinal alignment adjustment and reducing vertebral pressure.

Localized non-cylindrical reinforcement around screw holes boosts nail fatigue strength while preserving insertion in constrained anatomy.

Automatic locking and fixed alignment reduce play between a surgical instrument and navigation array while enabling quick tool-free attachment.

A toggle-lock clamp mounted on an intramedullary implant secures bone fragments hands-free, freeing surgeons for simultaneous procedures.

Localized non-cylindrical protrusions around screw holes raise intramedullary nail fatigue strength while preserving insertion in tight anatomy.

Aligned grooves and recesses let one bone anchor receiving part attach different instruments securely with reproducible positioning and less interference.

A locking bone anchor adapter aligns fluid channels to deliver bone cement with less leakage in minimally invasive surgery.

A modular plate tip with locking shelves and rail geometry adapts intraoperatively to femoral neck anatomy while reducing stress points and fracture risk.

Hooks and a rod receptacle secure spinal rods to ribs or lamina without bone penetration, aiding fixation in small or weak vertebrae.

A deformable bearing element creates flatter rod contact under fixing force, improving spinal fixation stability and reducing loosening and corrosion.

A nested drag retaining ring holds the shank head in a low-profile bottom-loading bone anchor while preserving polyaxial positioning stability.

A textured quasi-spherical connector locks within a tapered bore to match humeral anatomy while maintaining stable, removable implant alignment.

A compact femoral stem offset mechanism enables 360° rotation and in situ gap assessment without removal, saving surgical space and time.

Alternating fiber and resin layers replace metal spinal brace rods to avoid MRI interference while maintaining rigidity, durability, and break safety.

A geared reamer and distractor prepare the metatarsal-phalangeal joint through minimally invasive access while avoiding bone shortening and incomplete debridement.

A guided plate-and-pin assembly preserves anatomical reduction during the shift to locking screws while shortening fracture fixation time.

A biasing and brake mechanism restores knee extension in patients without a functional extensor system, helping prevent buckling during walking.

Tracks curved surgical tip deviation against an ideal geometry to keep the virtual instrument model accurate during robotic surgery.

A bent guide tube redirects bone screw insertion through a posterior approach, securing facet implants with less invasive spinal fusion.

A connector and movable adaptor simplify extender tab attachment while enabling controlled spinal distraction and compression during fusion procedures.

An integrated stylet and shaft insert spinal screws in one workflow, cutting fluoroscopy time, guidewire dislodgement, and tissue risk.

Forked receiving bushes and fastening screws replace exact-fit wedges, improving force transfer and torsional stability on thin bones.

A pawl-tensioned anchor and tether system restores joint stability through knotless fixation, reducing surgical complexity and slippage risk.

A rotatable collar and locking mechanism let surgeons correct bone alignment after fast fracture stabilization without revision surgery.

A nested actuation assembly with a load-cell sleeve enables precise implant load monitoring and non-invasive adjustment in smaller bones.

Deployable anchors secure a sacroiliac fusion implant through one access pathway, improving fixation while reducing procedure time and recovery burden.

An alignment rod and trifurcation setup restores femur fragment position for closed nailing without fluoroscopy, reducing radiation exposure.

Adjustable retractor blades create an operative corridor for minimally invasive TLIF, improving visualization and instrument access with less tissue damage.

A rotatable collar and lock let surgeons correct bone alignment after nail insertion, improving stabilization accuracy and reducing misalignment complications.

Magnetic coupling on a spinous process clamp stabilizes fiducial marker position and orientation for more reliable surgical AR tracking.

Radiopaque guides and a periscope improve screw placement accuracy in percutaneous bunion correction while limiting tissue trauma.

Cutting flutes and a tapered neck let a bone screw seat flush with the cortex, reducing tissue irritation without separate countersinking tools.

Oblique plate openings and diverging or converging locking screws improve cortical bone purchase and spinal fixation in low-density bone.

A nested lag screw and partially threaded compression screw improve removal, resist breakage, and reduce tissue irritation in IM fixation.

Deformable members inside a bone plate create internal pre-tensioning and dynamic loading to maintain compression while allowing healing micromotion.

Embedded strain gauges and antennas let spinal implants track connection force and stress over time while sending data to an external device.

Torque-based bone quality measurement guides compression and insertion torque selection to prevent fixation failure and bone damage.