Internal Osteosythesis TRIZ Cases

A ring retainer and twist-in pressure insert secure a low-profile polyaxial bone anchor against slippage while simplifying assembly.

A rotating clamping element raises head friction in a bone anchor coupling, easing rod alignment and in-situ surgical assembly.

A deformable interspinous insert passes through a small endoscopic incision, then expands and locks between spinous processes for stable fixation.

An implantable impedance sensor in a cannulated screw enables continuous fracture healing assessment without repeated imaging or patient-dependent follow-up.

A modular sleeve-and-arm instrument combines rod reduction, derotation, and set screw insertion to cut instrument changes and operating time.

A torsion-stiff, radially bendable screw driver accommodates misalignment to cut lateral bone strain and reduce implant loosening.

Exposed core fibers and surface recesses lock the reinforcing layer to a spinal fixation rod, improving rigidity, durability, and MRI compatibility.

Automated depth advance, clamping, and torque feedback improve pedicle screw placement accuracy while reducing manual injury risk.

A selectable drive sleeve keeps bone contact during insertion and countersinking, preserving interfragmentary compression without instrument changes.

Deployable sacral wings and a threaded proximal anchor create adjustable SI joint compression to reduce micromotion and promote fusion.

A removable extension block lets one interspinous implant switch between motion preservation and fusion while improving fixation stability.

An articulating vertebral prosthesis with posterior pedicle support corrects severe spinal deformities while preserving motion and stability.

A pivot-joint pawl lock replaces the proximal ratchet to avoid binding, improve visibility, and signal when rod reduction is ready for set screw insertion.

Built-in load sensing and actuator position monitoring enable precise bone lengthening without bulky external frames or infection-prone fixation.

A segmented rotating patient support improves spinal access and stabilization through adjustable leg, pelvic, torso, and head-arm supports.

A split retainer and downward-driven pressure insert stabilize the receiver on the shank head while improving pull-out resistance.

Autonomous end-effector alignment and line haptic constraints improve pedicle screw drilling precision while reducing spinal cord risk.

A dual-mode ratchet locks under high reduction force, then releases for quick disengagement to prevent jamming and rod cutting.

A twisted, cranked bone plate conforms to the shin bone to secure displaced fragments and reduce soft tissue strain during TCVO.

A cam-driven fixation bolt wedges side-loaded implant parts together to cut micromotion, spread loads, and lower stress concentration.

An exchangeable adapter interface lets one intramedullary nail actuator fit different nail sizes, reducing tool count, cost, and surgical handling stress.

Elastic members nested in spinal clamps secure rods and bone contact points, lowering post-surgical disengagement risk without bulky hook designs.

A translation-and-lock rod reducer seats spinal rods deeply into fixation anchors while enabling quick disengagement in tight surgical access.

A rotating optical coupling lets the pin analyze bone tissue during insertion, improving pedicle screw placement with less fluoroscopy.

Doppler ultrasound monitors vertebral artery blood flow during pedicle screw insertion to improve path guidance while reducing X-ray use.

A flexible targeting block and base plate help align distal humerus nail screw holes under fluoroscopy while reducing parallax and free-hand complexity.

Positive-rake cutting edges and angled trailing surfaces lower insertion torque and drag, helping pedicle screws place faster and more accurately.

A distraction hinge shifts the spinal center of rotation outside the vertebral cortex to correct deformity while preserving growth and motion.

A single-pivot spinal derotation approach spreads corrective force across pedicle screws to improve axial correction and reduce pullout risk.

An angled insert and threaded reducer enable rapid rod reduction with less twisting force, easing fatigue and hand switching in spinal surgery.

Segmented thread zones engage cortical and epiphyseal bone to improve foot and ankle fixation and reduce screw backout in osteoporotic bone.

Infrared tracking and computer-guided rod shaping replace manual bending to improve spinal correction accuracy and reduce operating time.

Guided pin, fastener, and alignment indexing improve Lisfranc bone reduction accuracy while supporting less invasive fixation.

A movable head and collet constrain screw angulation by plane, improving spinal screw alignment stability without losing needed adjustment.

Curved plate regions bridge complex joint fractures while sliding under soft tissue to reduce tendon irritation and maintain stable fixation.

A segmented spinous process-lamina prosthesis expands the spinal canal after laminectomy while protecting neural elements and limiting kyphotic deformity.

A concave saddle or locking cap spreads clamping load across PEEK rods, preventing deformation while preserving rod strength.

Resilient cap wings and spring elements let surgeons align a polyaxial bone screw and rod, then confirm secure locking with tactile and audible feedback.

Force-guided robotic screw insertion keeps the rotational axis on a planned spinal trajectory, improving placement accuracy and surgeon control.

A taper lock with bone-abutting flanges and flexible constructs improves torsional fixation and healing support in severe bone loss repair.

Magnetic actuation drives nested telescopic rods to lengthen bone in a controlled way while reducing repeat surgeries and surgical burden.

A steerable deformable conduit bends from straight to curved to reach off-axis vertebral targets through one cannula, reducing invasiveness.

Integrated strain gauges and MICS antennas let a spinal rod receiver monitor pedicle screw connection force over time.

Temporary preload clamping holds a bone anchor head at releasable angles, simplifying rod alignment and insertion before final locking.

An external pelvic-femoral assembly off-loads hip joint weight while preserving mobility through adjustable distraction and rotation.

A pedicle anchor and suspension ligament stabilize vertebrae through a lamina tunnel while reducing bleeding, nerve injury, and rigid fixation.

Real-time feedback and autonomous rod extension reduce repeat spinal surgeries while maintaining precise deformity treatment.

Implantable pins and flowable bone filler form a solid truss inside bone, improving osteoporotic fracture support with minimally invasive delivery.