Internal Osteosythesis TRIZ Cases

A cam-driven coupling lets surgeons lock and unlock a polyaxial bone anchor quickly while keeping rod and head adjustment easy.

A figure-8 beam and support pin create triangular femoral head fixation that lowers screw stress and helps prevent varus failure.

A plate-fitting drill guide aligns the guide wire and compression screw to prevent thread damage and reduce screw head protrusion.

An intramedullary stem with porous regions, angled screw holes, and barbs stabilizes osteotomy bone segments while reducing soft tissue irritation.

Mounting a camera on spinal retractor blades enables angled, unobstructed views in narrow surgical corridors without blocking instruments.

An adapter links a reference array to a bone anchor for precise spinal navigation with less radiographic imaging and lower patient trauma.

An expandable linkage-based vertebral insert increases fusion surface area, improves stability, and promotes bone growth after insertion.

A pawl-based cannulated stylet feeder enables accurate single-step pedicle screw insertion and automatic stylet retraction to save surgical time.

An insertion guide and plate define screw trajectories to simplify spinal fusion, reduce parts, and improve fixation alignment.

A polyaxial shaft, collar, and awl assembly cuts spinal plate attachment steps while improving screw placement control near sensitive vasculature.

A framed bore hole implant secures bone flaps while supporting tissue healing through biocompatible filling and fracture-resistant support members.

Integrated strain gauges in a spinal set screw track rod connection force and integrity during and after implantation for earlier issue detection.

A bone-anchored support stabilizes retractors and other instruments with polyaxial adjustment and drag locking that moves with the patient.

Derotation towers, clamps, and handle assemblies enable precise vertebral rotation and curvature correction while maintaining spinal alignment.

A lockable linkage holds multiple vertebrae in a derotated position, reducing manual stabilization during scoliosis and kyphosis correction.

An adjustable implant core and flexible element align small extremity bone segments intraoperatively while reducing invasiveness and component complexity.

A variable minor-diameter distal thread lets a fibular nail follow bone curvature while a placement jig aligns screws for stable fixation.

A ratcheting bone tie and multi-passage portal stabilize and fuse facet joints while simplifying tool delivery during spine repair.

A porous threaded pedicle implant stabilizes spinal fixation, protects nerve roots, and reduces screw loosening in weak or hollow pedicles.

Curved screw extensions guide a straight spinal rod to laterally reposition vertebrae, avoiding rod bending that can weaken implants and raise fracture risk.

An internal support structure paired with an exterior plate balances tension and compression to hold adjacent bone portions in alignment.

An endonasal C1-C2 prosthetic joint replaces the dens and anterior arch to preserve head rotation while restoring fixation after odontoidectomy.

A crisscross support layout boosts implant expansion within a shorter length, enabling greater vertebral height restoration through small access cannulas.

A rotating assembly adds sustained twisting force to growth-friendly spinal rods, correcting vertebral axial rotation in early-onset scoliosis.

Patient-specific MRI or CT-based guides match anatomy to improve tool alignment, reduce misplacement, and protect surrounding tissues.

A curvature-matched guide rail steers a boomerang interbody spacer through a narrow PLIF field for accurate placement and safer handling.

A fenestrated cannulated screw and nested driver system improve placement accuracy and deliver orthobiologic material in confined bone fusion procedures.

A metal-PEEK overmolded bone screw preserves shank strength while reducing X-ray interference and improving anatomy visibility.

Magnetic and spring forces move implant sections along a guided path to correct malpositioning with less maintenance and fewer adjustments.

Guide extensions let rods be aligned and secured through one small incision, avoiding tower interference in lordotic spinal fixation.

A ratcheted variable-length spinal rod enables incremental post-implant alignment correction while locking length and accommodating bone attachment angles.

Integrated ball spring collars and locking heads secure spinal rods without extra couplers, reducing bending stress and implantation steps.

Threaded inner and outer sleeve engagement improves spinal implant placement accuracy while securely capturing the bone fastener receiver.

A movable clamping ring lets surgeons reposition and lock the bone anchor independently, reducing vertebral pressure and adjustment time.

Rotatable wing plates and screw-locked coupling help spinal fusion cages fit curvature, resist detachment, and improve plate stability.

Distal cutting edges let the screw create its own path in bone, reducing skiving, insertion torque, and the need for separate preparation tools.

Recess protrusions and drive grooves improve screwdriver clamping in small surgical screws, reducing radial play and insertion loss.

A slim bottom-inserted pressure element simplifies rod-to-bone screw coupling, cutting parts while improving surgical handling and stiffness.

Balanced dual-start helical flange forms and oblique ramps keep receiver arms aligned and resist outward splay during closure torquing.

Flexure-linked suspended fixation bodies add controlled axial micromotion and compression, improving fracture healing without losing plate stability.

Two staged torque limits let surgeons tighten pedicle screw set screws precisely, reducing loosening and implant breakage risk.

A subcutaneous ratchet-based bone distractor enables controlled lengthening of small bones with less invasive implantation and fewer external fixation complications.

Percutaneous delivery through the existing rod path enables offset rod connector placement without extra incisions, improving spinal construct stability.

A flexible wire or strip pulls longer fusion rods through guide towers, improving insertion control while reducing soft tissue stress.

Linked locking tubes and tube clips enable simultaneous spinal derotation while preventing axial slippage and harmful vertebral loading.

A single lock screw secures both the spinal rod and cross-bar, simplifying minimally invasive cross-midline posterior fixation.

A grooved shaft, sleeve protrusion, and lock create a rigid surgical coupling that can still be released for cleaning and sterilization.

An eccentric screw tail and laterally adjustable screw seat align multiple rod grooves linearly, easing spinal fixation and avoiding distortion.

A bent bone plate and differential-pitch locking screw create asymmetric compression for angular correction and stable healing across foot bones.

An intramedullary implant uses load sensing, actuator position feedback, and ultrasound communication to lengthen bone without bulky external frames.