Internal Osteosythesis TRIZ Cases

Combined spinal tool uses a ramp mechanism to apply precise compression or distraction force directly to bone screws.

Segmented prosthetic units with spherical articulating surfaces reduce surgical risk while maintaining stable multi-axis movement.

A surgical retractor coupler shifts between connected and disconnected states to control tissue engaging members independently.

Segmented extension clamp retains original elongated rods during revision surgery, reducing surgical time and patient complications.

Segmented device with flexible proximal slot adapts to various stem geometries while distal threading anchors fractured bone, reducing surgical invasiveness.

Extender mounted to spinal anchor channels connecting member along longitudinal axis, reducing tissue disruption and eliminating additional incisions.

A cable pulling device with a reel and transmission moves a transport bone segment toward a fixed segment.

A surgical instrument manipulates bone anchors and spinal fixation elements to correct vertebral angular rotation.

Rotatable connector segment aligns spinal rods within the coronal plane, resolving stabilization versus adjustability trade-offs.

Extraction of yoke extender tubes allows flexible insertion paths and reduces surgical tool complexity.

A surgical guide assembly positions cutting instruments and fixation elements for orthopedic procedures.

A lag screw driver stop mechanism prevents over-rotation of the compression screw during orthopedic fixation procedures.

Segmented guide tools with lateral openings hold and transport spinal rods, reducing tissue trauma during minimally invasive implantation.

A central inflatable distractor and perimeter balloon create a horseshoe-shaped structural support within the disc space.

A dynamic cervical plate uses sliding sections to accommodate vertebral subsidence without invasive procedures.

A distal radius fixation plate with a thinner extension curves around the ulnar/volar corner to secure bone fragments.

A positioning shaft guides artificial hip joint surfaces into precise anatomical alignment within the femoral and pelvic bones.

Segmented shank and head components enable high torque application during spine surgery insertion procedures.

A vertebral attachment device uses a flexible strip to link the vertebra to a rod.

Obliquely tilted lateral stabilizers on the vertebral distractor avoid articular process interference, reducing tissue damage risk during insertion.

Telescopic shafts allow real-time depth modification without removing the device, reducing procedural time and infection risk.

Segmenting the rod resolves canal variability contradictions, while relocating the adjustment mechanism to the proximal end improves surgical usability.

A nail-plate combination uses an angularly stable connector to rigidly join a bone plate and intramedullary nail.

Telescopic slide members adjust lateral translation and derotation within a spinal coupler system.

Segmented screw shafts distribute cement for stability while maintaining structural integrity.

Cycloid gear assembly drives lead screw in adjustable implant to enable scalable bone lengthening while preventing jamming.

Central rod couples insertion tool to spinal cage for precise alignment and quick release.

Modular interspinous implants resolve the trade-off between spinal stability and surgical complexity by extracting fixation functions from complex rod systems.

A tether tensioning instrument uses a spring-loaded tip to increase tension between the tether and spinal fixation elements.

Segmented connecting devices resolve installation obstruction by allowing angular screw insertion before rigid fixation.

A surgical preparation tool system with a guide rail assembly and working cannula for precise sacroiliac joint fusion.

Ratcheting drivers and geared reducers align misaligned vertebrae and secure fixation devices, reducing patient trauma during minimally invasive spinal surgery.

Offset locking bores in an intramedullary nail enable frictional engagement of deformable members, reducing operation time and improving angular stability.

An inclined contact surface on a connection sleeve prevents compression of bone anchor extension members, maintaining separation for instrument passage.

An asymmetric neck portion with a recess and extension allows a polyaxial bone anchoring member to pivot up to 55 degrees while maintaining structural strength.

Interlocking modules with lateral perforations convey injection products into bone cavities, preventing nerve constriction and reducing patient discomfort.

A rotating separator detaches the introducer sheath at a pre-determined breaking point, preventing harmful splintering and tissue damage during spinal surgery.

Segmented shafts with helical slots enable curved bone screws to follow complex paths without thread stripping during installation.

Worm gear mechanism expands the jack halves to correct vertebral positioning while maintaining secure inter-vertebral support.

A prosthetic component with a triangular taproot resists torsional loads through geometric interlocking.

Sloping transition shoulders on the housing reduce soft tissue trauma, while a quick release mechanism enables controlled distraction and contraction.

A polyaxial ball and socket fastener uses a preloaded blocker ring and split ring to secure connector assemblies.

Biasing members in a spinal construct dynamically adjust to natural growth, maintaining constant distraction pressure without repeated surgical interventions.

A patient-specific jig uses inner contour guides to verify fixation element shape during surgery.

Horizontal fasteners anchor the vertebral plate to improve holding force while reducing incision size requirements.

Ball socket joint with multiple radius tear shaped geometry stabilizes C1 to C2 fusion while reducing surgical invasiveness.

Helical slots in the flexible spinal element allow controlled bending and twisting, reducing stress on adjacent vertebrae during dynamic stabilization.

Rounded notches in the distal end of a bone anchor housing create a secondary bore to enable high angulation.

A screw insertion instrument integrates a drive shaft and alignment post for precise bone screw placement.