Internal Osteosythesis TRIZ Cases

Living hinge recesses in arcuate side members provide spring resilience that resists pedicle screw pullout during facet joint immobilization.

Segmented fastening member with polymeric coupling secures bone parts, enabling quick re-access without compromising fixation stability.

An anti-splay head prevents arm separation by engaging a set screw's intermediate locking component into dedicated channels, avoiding complex thread designs.

A medical screwdriver uses a spring-loaded piston and rotatable collar to selectively engage an inner shaft with an outer housing.

Elastic member clamps reduce post-surgical disengagement risk by nesting flexible bands inside rigid structures to maintain stable rod fixation.

A flexible intervertebral linking device combines rigid metallic structures with viscoelastic materials to transmit loads and dampen mechanical stresses.

Tissue protection sleeves on lateral implant holders reduce cannula interference and tissue trauma during minimally invasive spinal fixation procedures.

An articulating implant holder transitions from a reduced profile to an increased profile for secure positioning.

A spinal implant uses a movable clamping element to adjust spacing between contact components for precise positioning.

An interspinous spacer assembly uses movable paddles and ratchets to secure the device between spinous processes.

A swinging spinal screw channel aligns support rods during implantation, reducing bone tissue damage from high localized forces.

A vertebral fusion device uses a plastically deformable granular bone material within a flexible net cage to stimulate osteosynthesis.

A magnetic torque limiter uses coupled magnets to transmit rotational force across an air gap.

An external magnetic field rotates the internal drive member to adjust bone displacement without invasive surgery.

Helical slots in the flexible section allow controlled movement while rigid segments maintain fixation stability, resolving loosening risks.

Rotating an interbody implant transversely corrects sagittal alignment and reduces spondylolisthesis.

Positioning templates establish exact screw hole locations to prevent adjacent segment degeneration from oversized plates.

Axial pressure expands inner strips through outer tube recesses, preventing femur rotation and necrosis while enabling minimally invasive guide wire insertion.

Flexible tether band and clamp assembly replace rigid screws, reducing bone damage risk during spinal stabilization.

A spinal growing rod uses a manual crank and gear rack to extend the implantable device along the spine.

Dual-angle frustoconical plate holes with upper and lower undercuts enable screw angulation without sacrificing axial stability in low-quality bone.

Independent yoke pivoting accommodates spinal flexion and extension, reducing patient discomfort during movement.

An inter-spinous implant anchors to spinous processes via bone fasteners to limit vertebral extension and control motion.

An expandable fusion device uses moveable endplates to adjust height within the intervertebral disc space.

A vertebral anchoring connector uses a sleeve to enable lateral tilting and rotational adjustment of the connection element.

Structurally encoded implant regions use radiopaque patterns to store and retrieve manufacturing data via optical imaging systems.

Segmented rod assemblies gradually align spinal curvature via tensioning members, preserving motion and reducing surgical risks.

A polyaxial bone anchor uses a threaded compression saddle to secure the screw head within the body.

A compressed porous polymeric matrix creates a high-strength three-dimensional structure with interconnected collapsed pores.

An intermediate opening in the stem portion of a trochanteric nail enables precise screw placement via a targeting jig, reducing fixation complexity.

Frangible bridges connect nested components in a single 3D printed structure, eliminating complex assembly steps and reducing positioning errors.

An expandable metal mesh maintains void geometry and anatomical distance during bone cement injection, resolving inconsistent height restoration.

An oblique frustum transition surface eliminates abrupt edges in the rod receiver bore, preventing fatigue cracking while maintaining asymmetric tilt angles.

Angled welding and overlapping arrangements isolate mechanical moments at the threaded block junction of an intramedullary bone lengthening nail.

A pivot-linked caliper measures spacing between bone screws to determine spinal rod length.

Internal threaded actuator extends anchoring tangs to prevent device dislodgement during bone fusion.

Segmented plates connected by a flexible ligament prevent bone wear and device migration while maintaining stable distraction.

Segmenting the compression member allows single-opening insertion, resolving surgical complexity while maintaining reliable vertebral stabilization.

Axially translatable locking surface adjusts tension on spinal constructs to resolve stability versus adjustability trade-offs.

External actuation of telescopic rods modifies vertebral compression to correct sagittal imbalance without revision surgery.

Adjustable aiming device with radiolucent target indicator aligns distal bores, reducing fluoroscopy time during minimally invasive surgery.

A surgical drill guide uses a friction lock mechanism to secure depth settings and prevent inadvertent adjustment during procedures.

A surgical reduction clamp uses a movable tip joint to resolve usability limits in osteosynthesis while maintaining structural simplicity.

Titanium shelf clips form an adjustable interior shelf that stabilizes bone flaps without screws, reducing surgical time and avoiding adhesions.

Soft metal inlays enable bone screw threading without weakening the hard metal nail cross-section, improving load-bearing capacity and fracture stabilization.

A modular prosthetic device reconstructs sternum, ribs, and clavicles using a polyfunctional plate system with a cup lock mechanism.

A surgical instrument uses a flexible collet to engage bone fasteners with precision.

A two-part implant uses resilient members to apply continuous axial compression between bone segments for fusion.