Internal Osteosythesis TRIZ Cases

A conical screw-grooved implant separates and secures adjacent spinous processes to decompress the spinal canal with less invasive fusion or non-fusion treatment.

A sterilizable capsule with transverse openings and barcode or RFID tracking keeps each medical device traceable and reveals capsule removal.

A spring-loaded locking ring and rotatable drive enable fast, secure medical tool attachment and release without quarter-turn alignment.

Rotating external magnets adjust implanted distraction devices without repeat surgery, reducing pain, infection risk, and treatment burden.

Embedded strain gauges and RFID/NFC electronics let a spinal implant set screw monitor connection force and integrity during and after implantation.

A motor-driven external magnet rotates implanted magnets to control bone lengthening without repeated surgeries or cumbersome external fixators.

Rotational speed and acceleration sensing confirm magnetic coupling and stalled states during non-invasive implant adjustment.

Rotating magnetic field feedback detects implant coupling and stall states, enabling precise non-invasive adjustment.

An implanted intramedullary mechanism automates bone lengthening through anchored hydraulic control, reducing manual adjustment, pain, and external bulk.

A sensor-guided magnetic actuator detects coupling slip and adjusts motor control to improve implanted device lengthening precision.

An implanted hydraulic bone anchor applies controlled intermittent force for bone lengthening and realignment with less manual adjustment and bulk.

Magnetic coupling and stall detection confirm non-invasive implant adjustments by tracking rotation speed and acceleration.

A bias-adjustable switch detects when tissue compression exceeds a preset force across a 25-200 micrometer gap for safer stapling control.

An embedded strain gauge, IC, and antenna inside a spinal implant set screw enable wireless monitoring of connection force and implant stability.

By nesting the antenna, IC, and strain gauge inside a spinal set screw, force data can be measured and transmitted during and after implantation.

Nested tubular implant bodies improve load distribution, fit, and tissue in-growth while simplifying vertebral placeholder adjustment.

A motor-driven permanent magnet enables precise at-home adjustment of implanted spinal distraction rods, reducing pain and repeat surgeries.

Preplanned and scanned attachment positions are merged into a virtual rod, then bent intraoperatively under sterile conditions.

A ball-bearing wedge coupling locks a surgical handle to an alignment guide while allowing passive assembly, torque transfer, and easy repositioning.

A continuous multi-pitch thread with a transition zone lowers bone screw insertion torque while preserving compression and precise thread forming.

A guide pin and slot compression assembly maintains adjustable sustained force in small-bone fusion without complex shape memory alloys.

A threaded post and geared sleeve convert rotation into stable disc space distraction, helping maintain height while reducing migration risk.

A pivoting collet interface uses a retaining insert to self-align surgical pins or wires, reducing binding and loading delays.

A pivoting collet within the driveshaft bore improves surgical wire and pin alignment, limits binding, and maintains rotational control.

A deployable pin and magazine retention portion let internal-drive breakoff heads stack securely and handle multiple screw styles with fewer driver changes.

Embedded strain gauge, IC, and antenna inside a spinal implant set screw enable wireless monitoring of connection force during and after implantation.

Dual helical threads with angled concave undercuts improve bone fixation and load sharing under multi-axial and off-axis loading.

Discrete ball-joint indexing lets a bone-fixed surgical navigation transmitter lock at up to 15° steps to prevent unintended reorientation.

A bone-fixed mount uses an indexed spherical head and two-part clamp to lock surgical navigation transmitters in stable 15° orientation steps.

A threaded post and geared sleeve expand a fusion implant in situ, enabling precise disc height control while reducing migration and surgery time.

A guide pin-slot and threaded adjustment assembly delivers sustained, post-insertion compression for small-bone fusion without shape memory alloys.

Rotational drive, worm gears, and interchangeable rod holders enable precise implant bending and cutting at the patient site with fewer adjustments.

Different staple alloys are placed by row to match healing time, preserving tissue compression before controlled bioabsorption.

Asymmetric tooth profiles create a guide wall that speeds screwdriver alignment and reduces drive damage in poor visibility.

Real-time orientation sensing guides spinal screw placement with higher accuracy while reducing radiation exposure, procedure time, and rework.

An asymmetric bone screw attachment point speeds screwdriver alignment while preserving high torque transfer during insertion and removal.

Preoperative planning and robotic feedback drive precise vertebral rod bending, avoiding manual shaping errors and extra radiation imaging.

An asymmetric bone screw tool interface improves docking under poor visibility while preserving high torque transmission during insertion.

Angled concave thread undercuts and dual shaft diameters improve bone fixation and load sharing under multi-axial joint loading.

Adjustable clamps, guide-based screw placement, and rod offset tools help maintain pelvic bone reduction across different anatomies.

A coaxial adjustment head and locking element secure the position of nested bodies while keeping the locking assembly compact for confined spaces.

A dial-driven gear and selector mechanism couples perpendicular-axis linkages to simplify customized surgical retractor positioning.

Adjustable offset, swivel, and translation features improve spinal rod shaping accuracy while reducing subjective, time-consuming bending.

Axially arranged reinforcing fibers let a PEEK bone screw maintain fixation strength while reducing artifacts in medical images.

Axially aligned carbon fibers in a PEEK bone screw improve fixation strength while minimizing imaging artifacts during surgery.

Varying thread pitch and angled undercut surfaces improve bone fixation and load sharing under multi-axial and off-axis loading.

A segmented thread with helix-shaped recesses boosts cortical bone holding force, resists loosening, and supports bone ingrowth.

A ratchet wheel and compound gear train multiply handle input so spinal rods can be bent with greater force and displacement.

Adjustable housing and interchangeable parts keep ultrasonic thermoplastic bone anchorage consistent across sleeve lengths and simplify revision.

A flexible intramedullary tube stiffens inside curved pelvic bone paths to improve fixation while reducing invasive exposure and blood loss.

A segmented spinal screw uses an elastically flexing middle section to share physiological loads and reduce bone stress-shielding.

A dial, drive gear, and selectable linking members create reproducible surgical exposure with fewer inputs and less tissue displacement.

Asymmetric insertion and removal walls guide screwdriver engagement in Torx-like screw heads, improving alignment speed and accuracy.

A removable annular anchor guides pedicle screw trajectory for minimally invasive spinal stabilization with less tissue disruption.

A non-circular peg, nail hole, and plate interface enables dynamic locking and lateral support to reduce hardware failure in proximal femur fractures.

Frangible extender tabs and releasable tab extenders help position and reduce spinal rods without separate retractors in minimally invasive surgery.

A retaining sleeve coupled to the bone screw head keeps the cannulated shaft aligned for stable cement delivery with less leakage and fewer steps.

A cradle-and-clamp cord channel secures spinal tether cords while reducing wear, tissue erosion, and uneven loading in bone implantation.

Embedded sensors measure force, position, and temperature during spine surgery so surgeons can adjust constructs in real time.

Lateral light emission from a single optical fibre creates multiple tracking points, reducing tracker weight and complexity in surgical navigation.

A portable accelerometer-based orientation fixture aligns knee cutting planes to the mechanical axis without complex navigation systems.

Movable external fixation blocks translate bone segments to improve endosteal nutrient flow, blood supply, and diabetic foot ulcer healing.

A button-actuated cam slot locks the retractor blade to a pedicle screw during manipulation, preventing premature opening while allowing easy release.

Load-cell force and moment feedback detects unintended surgical tool movement during bone insertion, helping maintain drilling accuracy.

A lockable poly-axial screw and multi-use extender cut instrument count while simplifying rod reduction, fixation, and screw release.

A flexible band tensioning inserter secures spinal implants around the spinous process to maintain alignment while avoiding pedicle damage.

A cam lock secures bone fasteners against backout while cutting edges create the implant path and collect graft during minimally invasive fusion.

Acute-angle cutting edges and thread-end cutters help a bone screw self-guide into bone with lower torque and downward force.

An interlocking femoral neck and shaft implant reinforces bone and improves load distribution to help prevent future hip fractures.

A pivot-near pawl and groove lock replaces bulky ratchets, reducing binding and view obstruction while signaling sufficient rod reduction.

Tailored stem loading matches fractured long bone geometry to distribute stress properly and lower osteonecrosis risk during healing.

Electronic depth readout and a tactile bone probe improve hole measurement accuracy, secure readings, and speed screw selection.

A transverse set screw locks into a fixation screw to resist femoral rotation, widen load distribution, and reduce trauma from multiple screws.

A wedge-shaped spacer with anchors, apertures, and a central bore stabilizes the sacroiliac joint while reducing implant shearing and fusion failure.

Multiple thread start surfaces help a spinal implant plug align, rotate, and advance with less force when securing a connecting member.

Derotation towers, transverse connectors, and clamps enable 3D spinal correction and stable vertebral alignment until bone fusion.

Cross-coupled lateral and longitudinal rods spread correction loads across multiple pedicles while enabling precise vertebral realignment.

Adjustable opposing arms grip the spinous process securely, improving fiducial marker stability and AR tracking accuracy during surgery.

Flexible wires or strips pull long fusion rods through pedicle screw towers, easing percutaneous placement while reducing soft tissue stress.

An expansion-only retainer ring and insert-side compression stabilize the shank-receiver connection, limiting floppy rotation and resisting pull-out.

A modular extension plate adapts femoral neck fixation to anatomical variation, improving fit and stability while reducing stress points and fracture risk.

Dual groove and recess features let one bone anchor receiving part fit different instruments while keeping attachment secure and repeatable.

A cradle-and-clamp cord housing secures spinal correction cords while limiting rubbing, overtightening, and tissue erosion during bone implantation.

Multi-pivot anchors and actuators expand pedicle screw motion for controlled spondylolisthesis reduction with lower tissue stress.

A rigid triangular bar assembly enables precise 3D vertebrae correction while protecting pedicle screw anchorage from damaging corrective loads.

An expandable barrel and lordotic plates stabilize adjacent vertebrae, support fusion, and reduce damaging force on spinous processes.

A ratcheted barrel-and-jaw clamp holds Lisfranc joint compression during guidewire and screw insertion for more stable, precise reconstruction.

A dual-driver locking fastener prevents accidental retractor disassembly during adjustment while still allowing full removal for sterilization.

Guide assemblies and leveraged reduction let surgeons align the spine and place pedicle screws in lateral decubitus without repositioning.

A radiopaque jaw and positioning marker enable accurate fluoroscopic registration on spinous processes while supporting narrow-field image-guided surgery.

A stylet-guided cannulated bone screw combines pilot-hole creation and insertion to reduce steps while maintaining pedicle placement accuracy.

Angled screw tabs at 30°-60° let this bone plate apply precise compression and stable fixation between bone parts, including curved structures.

Guide arms and reduction features help align and seat a spinal fixation rod through smaller incisions while maintaining vertebral alignment.

A single-pedicle anchor with six degrees of freedom stabilizes spinal tools for precise posterior access through smaller incisions.

Embedded sensors and an antenna inside a sealed set screw enable continuous wireless monitoring of spinal implant connection force.

A living-hinge intervertebral implant expands after minimally invasive delivery to increase bone graft volume, endplate contact, and fusion stability.

Bone-wrapping tines convert tensile forces into fracture compression while improving fixation stability and reducing implant irritation.

Arced drilling forms scalloped bone troughs that seat ridged joint inserts securely while minimizing healthy bone removal.

A dual spreader distraction mechanism combines disc space expansion with lateral vertebral repositioning to improve fusion access and reduce nerve root risk.

An interlocking neck-and-shaft implant reinforces osteoporotic femoral bone before injury, improving stability and fracture prevention.

Shape-memory intramedullary fixation uses differential threads and reversible deformation to sustain bone compression and improve torsional stability.

CT-based 3D bone modeling shapes orthopedic plates and implants to match anatomy, improving interface loading and reducing fracture risk.

A threaded expandable implant adjusts vertebral spacing through small incisions, reducing tissue trauma while limiting nerve compression.

A handle-mounted control member lets surgeons reposition an access tube quickly without blocking the working channel or removing instruments.

A cannulated screw, inner sleeve, and guide pin simplify cement injection and spinal fixation while preserving screw removability after cement hardens.

Biocompatible additive manufacturing fuses solid and porous screw regions, enabling bony ingrowth while preserving mechanical strength.

This case uses an implanted anchor and drag-force lock to stabilize supports while keeping disc-space access clear.

An implant device elongates between bone bars to apply tensile stress.

Varying thread profiles along the anchoring body accommodate cortical and spongy bone hardness differences, ensuring secure mechanical hold.

An injector integrates a light source to initiate photopolymerization of biocompatible materials within the delivery path, reducing in situ curing time.

A handheld instrument with hinged members identifies the central spinal axis by contacting the anterior longitudinal ligament.

Rotatable arms with tapered projections interlock bone fasteners via dovetail connections, preventing unintended detachment during spinal rod reduction.

Segmented head holders and ratcheting connectors reduce procedural time while maintaining rotational correction reliability.