Internal Osteosythesis TRIZ Cases

A light-cured support member anchored in a bone cavity enables precise articular head reconstruction and stable joint fixation with minimal invasiveness.

Guide wire receptacles and locking features improve fixation screw alignment while reducing implant failure, rotation, and bone cutout.

Integrated anti-torque plugs and locking screws resist shear and rotation to stabilize bone fragments during fusion and fracture repair.

A collapsible spreader nested in a bridging device keeps bone surfaces separated while preserving access for bone plate placement.

Fenestrated cannulated bone rods deliver or drain fluids at the posterolateral fusion site, reducing infection and seroma risk after fixation.

A flexible polyaxial washer conforms to the ilium and works with dual threads to prevent screw backout and improve sacroiliac fusion stability.

Real-time load sensing in a rod reducer helps surgeons seat spinal rods accurately during multi-level fixation and avoid guesswork.

An integrated stylet guides cannulated bone screw insertion to create the pilot path, reduce skiving, and improve placement accuracy.

Captured robotic tool poses are converted into implant positions and rod bending instructions to fit patient-specific vertebral fixation accurately.

A rivet and plug locking approach secures an implant anchor without stored screw energy, reducing loosening and detachment under load.

Mechanical threads or ridges secure a modular implant in bone, improving fixation while avoiding plasma spray coating complexity.

Specialized holders, awls, and sizing tools enable percutaneous transverse coupler attachment to spinal rods while reducing incision trauma.

A lifting-groove cervical plate enables controlled vertebral advancement in ACAF while preserving intervertebral height and cervical curvature.

Short, deep threads and pitch over 1.0 mm improve pullout strength while lowering vertebral artery and nerve root injury risk.

A hinged retractor ring creates a minimally invasive anterior-to-psoas corridor that avoids psoas traversal and helps protect the lumbar plexus.

Offset-arc rod channels and retaining set screws secure spinal rods of different diameters and curvatures with fewer connector variants.

By nesting the K-wire inside a tubular marker, surgeons can keep screw passages marked without dangling wires blocking motion or cage placement.

An expandable interbody implant uses flexible anchors and pivotable legs to stabilize vertebrae while reducing pedicle screw-related tissue disruption.

A staggered-path plunger and concentric hex driver simplify interspinous implant locking, deployment, disassembly, and cleaning.

A flexible intramedullary implant locks into a rigid curved shape while delivering bone cement or therapeutic agents through the medullary canal.

A compliant fixation plate allows axial compression while preventing lateral shift, reducing stress shielding and supporting osteointegration.

A split retainer ring and compression insert stabilize the bone anchor receiver, preserving polyaxial motion while resisting pull-out forces.

A tulip, saddle, and expandable ring clamp the screw head and rod to improve spinal stabilization while simplifying assembly.

Osmotic pressure drives continuous rod expansion while a wedging lock blocks backsliding, reducing repeat lengthening surgeries in scoliosis care.

CT-based 3D bone modeling shapes orthopedic plates and nails to improve fit, reduce soft tissue irritation, and lower fracture risk.

An angled recessed collet interface prevents tulip loosening under axial rod forces while preserving rotational freedom and easier assembly.

A modular pedicle-based distractor pairs interchangeable screw interfaces with a medial retractor blade to improve spinal access while limiting tissue trauma.

A main and subsidiary cervical plate connect through fitting features, enabling adjacent-level reoperation without removing the original plate.

Magnetic coupling and toroidal springs transfer torque in implantable assemblies while easing alignment, allowing axial translation, and reducing wear.

Adjustable staples and a vertical member realign vertebral bodies while limiting deformity progression and reducing reoperation risk.

A segmented intervertebral cage expands after minimally invasive insertion to widen disc space support and improve fusion stability.

A nested sleeve-and-rod guide couples to fenestrated spinal screws to improve bone cement placement control and screw stability.

Intermeshed dual pawl and ratchet locking speeds sternal closure while improving 3D stabilization and resistance to stress loads.

A radially expanding mesh fastener improves subchondral bone anchoring, helping prevent varus mal-alignment and screw cut-out.

Rotational and axial locking blades create a minimally invasive path for bone anchor placement while improving spinal fixation alignment.

A fluid-controlled telescoping spinal rod extends in vivo to accommodate growth and maintain alignment without repeated scoliosis surgeries.

Independent talar and calcaneal compression carriages maintain force across fused bones, improving fixation stability during healing.

A tulip, saddle, and expandable ring clamp the polyaxial screw head to the rod, improving spinal fixation stability and assembly.

Elastic spring members apply controlled bone compression, maintain alignment, and allow distraction as healing progresses.

A single-piece elliptical sleeve uses three anchor points and a removable trocar to simplify assembly while stabilizing nail entry and protecting the patella.

Curved crescent and spherical bone cuts enable multi-plane realignment during osteotomy while preserving fixation options for stable correction.

A gauged spinal compression instrument replaces subjective force checks to size implants more precisely and reduce tissue damage.

A thermoplastic plate with zip tie-like straps stabilizes the sternum while allowing load-sharing micro-motion that supports healing and faster chest access.

An expandable monocortical fastener boosts bone plate grip without bi-cortical drilling, reducing tissue damage while improving fixation stability.

A detectable marker on a vertebral engagement shaft enables robotic tracking for precise screw placement, spinal alignment, and stabilization.

A tapered male adaptor and fluted receiver join fixation and arthroplasty implants to stabilize periprosthetic fractures while preserving bone.

Angled pin holes and a screw actuator create controlled distraction and compression for reproducible bone realignment and inter-bone space preparation.

Embedded strain sensors in a spinal screw head track multi-axis rod forces, helping monitor fixation integrity and detect construct issues early.

A bone fixing screw template uses a detachable cylindrical spacer tube to guide medical screws along a predetermined path.

An intramedullary nail with a magnetic assembly moves a transport sled inside the bone canal, eliminating external frames and reducing skin infection risks.

Integrated guide tubes provide distraction and compression forces while applying counter-torque, eliminating separate tools.

An asymmetric spinal implant enables lateral cervical fixation through a curved cage and oriented plate, protecting carotid arteries during surgery.

Axial slits impart flexibility to an inter-spinous implant, reducing dynamic stress on the processus spinosus during minimally invasive spinal decompression.

Self-aligning bulbous and looped implant features resolve complex bone structure alignment issues.

A clip system with a biased pin maintains spinal plate extension, accommodating subsidence without compression.

A tubular member with a porous exterior hydrates particulate bone material via capillary action, reducing wastage and contamination during surgical delivery.

Ball joints in a transverse connector allow multidirectional articulation, accommodating anatomical variations while maintaining secure spinal rod fixation.

Asymmetric friction surfaces in the clamping assembly lock tethers automatically, eliminating complex locking elements and reducing surgical steps.

Integrally formed cap and set screw aligns with threaded posts, eliminating cross-threading risks during osteosynthesis rod installation.

Flexible rods accommodate motion to promote fusion, while rigid plates ensure stable anchoring to spinous processes.

Patsnap Eureka TRIZ case for bone material dispensing system locking member.

A nested locking device secures a rod-shaped element within a bone anchor using an internal second locking member.

An internal extramedullary bone lengthening device uses a telescopic sliding mechanism to provide dynamic axial stability during fixation.

A balloon catheter expands the vertebral body to restore height before injecting bone cement through a dedicated cannula.

A surgical instrument uses movable arms and pivots to rotate spinal constructs for precise alignment.

A gear shifter mechanism reverses output shaft rotation in power pedicle screwdrivers using helical gears.

An inflatable balloon expands inside fractured bone to prevent cement leakage while a light pipe hardens the material.

Segmented intramedullary nails deliver antibiotics via removable cement coatings, eliminating bone retention risks during device extraction.

Tapered intramedullary nail stabilizes fractured clavicle fragments, eliminating stress risers from plate fixation and preventing pin migration.

Wings extending into uncinate joints anchor the monoblock implant in dense cortical bone, preventing subsidence and promoting reliable fusion.

A spinal fixing system uses a spherical head interface to enable multi-axial bone screw positioning within confined anatomical spaces.

A vertebral rod assembly uses a splined locking mechanism to secure rotating members at precise angles for spinal alignment.

A resilient retaining ring compresses into a fastener head groove to pass through an implant aperture before expanding to lock the assembly in place.

Nitinol implant locks into bone and shortens to apply consistent compression forces, eliminating thermal activation requirements.

Biased angle bone fasteners in a modular spinal implant reduce instrumentation complexity while maintaining secure vertebral fixation.

Nested retention members expand within a support structure to anchor spinous processes, enabling minimally invasive repositioning without large incisions.

A spacer positioned between vertebral members acts as a fulcrum for corrective force application, reducing facet joint wear and pain.

A pedicle screw implant uses a cutting boring ring to promote bleeding and bone graft formation during spinal fixation.

A guiding rod establishes a reference axis for coaxial assembly of connecting members, enabling a less invasive lateral surgical approach.

Modular pullwire handle locks distal tips to enable precise spinal decompression while reducing surgical trauma.

Nested locking elements drive sequentially to fix the head and rod with one tool, reducing device complexity and volume.

A spinal implant frame and cover structure stabilizes the spine while protecting the dura.

A reconfigurable bone adjustment device incorporates a dynamic segment between members to enable controlled compression and axial movement.

Additive manufactured titanium implants with 30-70% porosity mimic natural bone density, resolving fusion stability issues.

A surgical instrument uses an elongate guide member and reciprocable carrier to deliver orthopaedic implants through narrow portals.

Nested bone anchors form a stable triangular load-bearing plane that resists migration and prevents subsidence during anatomical function.

Rigid titanium tulip design incorporates a controlled fracture plane for deliberate component separation during minimally invasive spine procedures.

Segmented bone anchors reduce nerve damage risk by allowing precise insert placement before screw attachment.