Internal Osteosythesis TRIZ Cases

A bone displacement system uses a force application fixture to move bone portions relative to each other.

Segmented bodies with connecting rods enable jaw rotation, reducing tissue entrapment during implantation.

Dual tube actuation switches polyaxial bone anchor heads between locked and unlocked states, reducing adjustment time during complex spinal surgeries.

A ball-and-socket joint with a clamping element enables adjustable positioning of surgical plates.

Vertebral attachments with embedded magnets provide physiologic attractive or repulsive forces to affect adjacent vertebrae interaction.

A cable button secures cerclage wire through bone plate apertures to compress fracture sites.

Movable end plates adjust the cage height to optimize bone screw fixation and reduce inventory.

An adjustable intervertebral implant uses a rotating expansion ring to axially move nested members for precise disc height restoration.

A medical decoupling instrument uses a spring mechanism to automatically align its shaft and sleeve components for precise operation.

A reduced inner diameter expands the distal portion of an anchor body, increasing friction and pullout resistance in osteoporotic bone.

A dynamic cervical plate uses a ratchet mechanism to adjust length and lock in place for spinal stabilization.

Mobile staple branches transition to anchoring positions, eliminating vertebral play and expulsion risks while maintaining stable fixation.

A polyaxial facet joint replacement system uses taper-lock connectors to secure adjustable implants for precise anatomical alignment.

An elongate implantable device expands the spinal canal by rotating a hinged lamina segment away from the cord.

Segmented capitellar and coronoid implants with integrated hinge mechanisms improve rotational stability and fixation for complex fracture reconstruction.

Composite spacer sections with differing flexibility reposition rotation centers, resolving the trade-off between motion control and structural complexity.

A sleeve pin assembly with a detachable collet portion enables secure bone fixation through axial drilling.

Stacked arc-shaped holding parts minimize wound opening width and tissue damage during spinal fixation surgery.

Segmented spinal implant pivots at hinge axes to conform to vertebral curvature.

A vertebral stabilization connector transitions between open and closed configurations to secure bone anchors.

A laminoplasty implant with a rotatable second portion engages the separated lamina edge and lateral mass.

Segmented purge lines manipulate fluid direction to remove air bubbles from catheter lumens, resolving reliability and complexity trade-offs.

Segmenting the instrument into detachable modules reduces shaft length and manufacturing costs while maintaining alignment precision.

Modular spinal stabilization segments connect via adjustable mounting assemblies, eliminating rod contouring and reducing surgical time.

A universal rod holder with threaded drive and shaft members secures spinal rods.

A mediator lever transfers thumb force to release the rack, resolving ergonomic injury risks during one-handed operation.

Multi-chamber evacuable implants stiffen for bone fixation while maintaining structural integrity if individual chambers leak.

Flexible articulation insert enables controlled shaft bending to reach target tissue through a single incision, reducing scarring and procedure time.

An angular rod cross-section prevents tilting of the sliding clamping element, resolving stability issues during one-handed cranial flap attachment.

Pre-manufactured arcuate and S-shaped spinal rods eliminate manual bending errors to achieve anatomically normal spinal column arrangements.

Ramped surfaces in the magnifier convert rotational torque into amplified linear compression, resolving bone prominence risks during orthopedic fixation.

Variable stiffness prosthetics reduce insertion forces and promote osseointegration by mimicking bone mechanical properties.

Virtual modeling creates customized guides that establish precise bone alignment geometry before surgery, reducing reliance on intraoperative trial-and-error.

A telescoping bone screw uses a plunger assembly and detent member to secure fixation within the femoral head.

A surgical driver device uses a retractable tab and movable shaft to engage polyaxial screw recesses for rigid fixation.

Segmented connector segments join prosthetic stems via a lap joint, eliminating bone distraction during assembly.

A minimally invasive spinal compressor and distractor instrument uses internal support tubes to enable precise linear and angular manipulation.

A vertebral probe with a tapered distal tip provides tactile feedback during spinal surgery.

A hollow sacroiliac screw features a bone cutting flute that directs fragments into internal chambers for autograft integration.

Continuous rotational adjustability accommodates varying bone angles without disassembly, eliminating time-consuming reconfiguration steps.

A bone fastener assembly instrument uses a worm gear transmission to rotate and align threaded components for surgical implantation.

A tapered implant body uses a guide wire to establish accurate trajectory during percutaneous insertion.

An osteosynthesis splint extends into the intramedullary canal to stabilize rib fractures.

Segmented guiding structures enable rotational tensioning of flexible members in confined spinal surgery spaces without requiring extensive free space.

Threaded implant receiver arms adjust rod height via a movable nut mechanism, preventing pedicle screw dislodgment during spinal surgery.

A minimally invasive sacroiliac fusion stabilizer features a lazy-S shape and cannulation for joint insertion.

A bone registration assembly with a cable fixation system and optical marker for robotic shoulder arthroplasty.