Internal Osteosythesis TRIZ Cases

A magnetic telescopic implant lengthens bones or residual limbs without repeat surgery, reducing invasiveness in scoliosis and limb correction.

A chamfered tulip increases screw swivel angle so one pelvic screw can secure rods in different directions and replace separate fixation screw types.

A flexible-to-rigid intramedullary implant follows curved bone paths, then locks to provide stable fixation with less invasive surgery.

A rotating lock ring and deflectable fork head simplify bone anchor mounting, support temporary monoaxial fixation, and improve implant stability.

A textured quasi-spherical connector enables angular humeral implant adjustment while maintaining secure removable locking against back-out.

Retractable lever elements inside the nail enable minimally invasive, infinitely variable transverse bone distraction without external fixators.

Movable clamping jaws and a tension limiter spring help surgeons apply, hold, and release strap tension around bone with better handling and reliability.

Preoperative 3D planning tailors spinal implant geometry and screw trajectory to improve fixation while reducing neurovascular injury risk.

Predictive modeling and intraoperative tracking tailor spinal implants to patient anatomy and improve placement accuracy during surgery.

Partial-coil biasing and a ratcheting rod enable controlled spinal curvature correction and help maintain deformity correction over time.

A clutch and planetary gear path lets one motor drive fast stylet advancement and high-torque bone anchor insertion with better control.

A pivoting clamp grips the trunnion neck of polished femoral components to prevent slipping and avoid more invasive removal procedures.

Interrupted stem recesses create discrete cement anchorage zones that improve long-term fixation and reduce aseptic loosening in high-risk patients.

A modular connector, setscrew, and multi-axial screw reinforce existing spinal rods with less tissue disruption in revision surgery.

Variable-angle and locking openings help bone plates avoid existing implants while enabling longer fracture fixation and better stress distribution.

Angled guide openings and an integrated locking block simplify spinal fusion screw placement, reducing surgical time and construct failure risk.

Spring-like and damped extra-articular implants absorb joint load while preserving motion and adapting to individual joint mechanics.

Flexible cable-coupled bicortical posts guide bone growth to correct rotational deformities and limb length discrepancies with less invasive surgery.

A converter surrounds an open tulip head to secure the spinal rod, prevent splaying, and avoid screw replacement trauma.

A bendable rod passed from the inferior pedicle through the disc space stabilizes adjacent vertebrae while reducing soft tissue disruption and facet joint violation.

A nested lead screw implant enables precise bone distraction or compression through transcutaneous actuation while fitting constrained implantation sites.

Measured spinal compression with gauges and coupled arms helps size fusion implants accurately while avoiding harmful trial forces and tissue damage.

Real-time load cells and optical feedback help surgeons monitor implant force during spinal fusion to improve placement accuracy and reduce complications.

Polyaxial articulating joints and locking mechanisms align spinal rods to patient anatomy without pre-bending, reducing rod stress and surgical time.

Real-time load sensing and actuator position feedback enable precise internal bone lengthening without bulky external frames or pin-site infection.

A superelastic pressure member enables sequential head and rod locking with lower force while keeping the bone anchor head locked during adjustment.

Custom stem and accessory components match cortical and cancellous bone to improve load distribution and limit periprosthetic bone loss.

A deformable pressure member uses rod insertion to lock the bone anchor head without extra locking parts, simplifying surgical adjustment.

Opposite-handed nested screws interweave to resist loosening in metacarpal fixation while preserving range of motion.

Flexible tulip retaining clips and a ramp-guided drive shaft speed spinal rod connection while improving fixation security and handling.

Integrated load sensing gives real-time force feedback during bone lengthening, improving adjustment precision and reducing imaging needs.

A tensioned anchor-notch coupling keeps a vertebral implant aligned during placement and cement delivery, then releases cleanly when actuated.

An external wireless drive moves actuation out of the intramedullary nail, preserving strength and enabling controlled bone distraction.

Flexible fins bend inward during insertion so the stem conforms to medullary canal curvature while improving fixation and resisting pull-out.

A threaded band-and-bracket closure applies adjustable sternal compression for secure immobilization, healing, and easier implantation.

A modular angled receiver and bone fastener expand spinal fixation trajectories while reducing inventory needs and surgical complexity.

A magnetic handpiece and telescopic implant enable precise post-op knee bone angle adjustment without invasive re-entry, reducing correction loss.

An expandable anchoring member stabilizes the percutaneous pin during bone harvesting through one opening, reducing wound risk and navigation error.

A tapered variable-pitch screw tip eases starting on a guide wire, cutting urging force, tissue damage, and insertion effort while maintaining compression fixation.

Optical 3D tracking with fiducial markers enables fast intraoperative spinal alignment assessment while reducing radiation and workflow disruption.

Direct intravertebral distraction restores the collapsed central bony block, improving vertebral body reduction and anterior support.

A transverse connector with distraction support pins and an expansion balloon restores vertebral height and stabilizes burst fractures.

Expandable and adjustable SI joint anchors improve rod-integrated fixation, reduce screw loosening, and help limit revision-prone joint motion.

A flexing anvil and polyaxial screw head improve rod attachment rigidity for large spinal corrections without a larger construct profile.

An eyelet screw and tulip tethering approach adds mechanical leverage to stabilize fused and unfused spinal segments and reduce PJK risk.

Flexible extension wings replace bulky cylindrical screw extensions to avoid adjacent screw interference and reduce incision size in MIS spine surgery.

A smooth bone-contact surface lets the load distributor slide during wire tightening, reducing periosteum trauma while maintaining fixation.

Bone density maps and real-time tool feedback let the robot detect drilling discrepancies and correct pedicle screw placement.

A non-cylindrical distal fibula nail improves bone contact and rotation resistance while simplifying canal preparation for fracture healing.

A pedicle-based implant traverses the disc space to stabilize adjacent vertebrae while reducing morbidity and time linked to bilateral screws.