Internal Osteosythesis TRIZ Cases

A surgical fixing device spreads implant support elements to limit insertion depth and guide precise positioning relative to spinous processes.

Integrating biasing members into the pressure cap reduces component count while maintaining secure fixation without removing the bone screw.

A central ramp pushes endplates outward to adjust height, eliminating the need for vertebral distraction during insertion.

Rotatable wings secure the device to bone, preventing escape and reducing operation time.

Adjustable insertion stop controls depth while drive mechanism actuates the push rod for precise implant positioning.

Segmenting the spine into independent rigid bodies with local registration transforms maintains navigation accuracy despite intervertebral motion.

A prosthetic acetabular cup features a contoured outer peripheral rim that mimics natural anatomy to expand the range of angular movement.

Segmented instrument guide with releasable lock stabilizes implants, eliminating manual holding during drilling.

Segmenting the reduction device into distinct functional components resolves the trade-off between precise rod insertion and increased operational complexity.

An elastic restraining system secures an alignment guide on a surgical rod, enabling one-handed insertion while maintaining precise rotational stability.

Polygonal shaft geometry prevents rotational loosening to reduce revision rates in sacroiliac joint fusion.

Screws secure a laminar plate between the facet and spinous process, preventing bone regrowth into the spinal canal.

Mineral fiber reinforced biocomposite implants sustain mechanical strength equivalent to cortical bone while eliminating secondary removal surgeries.

Modular facet joint implants with polyaxial rotation and taper-lock connectors resolve the trade-off between surgical adjustability and device complexity.

Flexible polymeric guides accommodate spinal curvature to reduce surgical site size during dynamic stabilization.

A bottom-loaded bone anchor uses a compression insert to engage the shank head with friction fit, preventing floppy rotation during spinal alignment.

Resilient peripheral portions of the burr hole fitting expand to press against inner walls, accommodating varying drill diameters without scalp interference.

Intermediary collar constrains extenders to prevent splaying and break-off during implant placement.

Segmented jig arms and dynamic saw guides resolve measurement precision versus device complexity in osteotomies.

A swivel locking mechanism adjusts spinal rod angles without bending, preserving structural integrity and surgical precision.

A modular intramedullary nail system uses coupling modules to assemble segmented rods for customizable length and cross-sectional shape.

A lateral spinal access assembly uses a guide wire, distractor, and dynamic tube to establish controlled vertebral distraction through small incisions.

Embedded passive magnetoelastic sensors monitor healing progress by detecting magnetic property changes under stress, eliminating complex electronic components.

A plate holder mounts a bone plate shaft to enable precise percutaneous positioning during surgical fixation.

Multi-layer Nitinol spring member segments into independent beams to maintain compression in bone stabilization devices.

A rotatable bone fastener head aligns with vertebral rods, resolving stress concentration across spinal elements.

Segmented coupling members nest around longitudinal rods to enable minimally invasive assembly while maintaining rigid vertebral alignment.

Incremental rotation of a threaded reduction instrument urges spinal rods into pedicle screws, eliminating excessive axial loads on the screw assembly.

Segmented intramedullary rods enable precise coronal, transverse, and sagittal adjustments to reduce surgical trauma while maintaining joint stability.

Absorbable pins dissolve via hydrolysis to eliminate second surgeries and reduce complications.

Integrated rasp decorticates bone while delivering grafts, reducing tissue trauma and procedure complexity.

Modular bone anchor coupler assembly uses nested collet mechanisms to correct sagittal angular misalignment without requiring large open surgical incisions.

Flexible keel wings with outward flares flex laterally to reduce insertion force, resolving the trade-off between anchoring strength and revision ease.

Curved fixation members bypass iliac crest obstructions to secure sacral anchors, resolving unilateral fusion rigidity trade-offs.

Interchangeable inner collets in a modular pedicle screw assembly reduce inventory complexity while maintaining reliable clamping security.

A spinal rod connector uses a spring-loaded clamp for manual positioning and a separate locking device for secure fixation.

Variable angle screw fixation maintains spinal alignment and prevents implant backout without requiring complex osteotomy procedures.

An elastic bumper inside a segmented vertebral rod provides variable resistance to motion, reducing stress on adjacent vertebral members.

Porous inner channels promote rapid bone integration while the solid outer shell maintains mechanical stability.

A porous tantalum metal hollow screw with a conical head and specific thread geometry facilitates bone ingrowth.

A wire insertion device guides a reference wire through bone tissue to enable precise bone plate placement.

Hinged lid connects to tray cavities, reducing medical waste and procedural time while maintaining implant sterility.

V-shaped cutting tool trims flexible load distributor without damaging sternal wires, resolving clamping force versus bone injury trade-off.

A spinal implant fastener uses a deformable element to allow uni-directional translation and multi-axial rotation.

Offset fixation holes bypass prosthetic stems to prevent interference, while proximal hooks engage the greater trochanter to reduce stress risers.

A flexible spinal correction device uses springs and fixation members to apply corrective forces across multiple vertebral segments.

Segmented spinous process fixation device couples via insertion instruments to stabilize spinal alignment.

A spinal fixation system uses transverse rods and nodes to distribute corrective forces across multiple bone anchors.

Rotating blades in the nail tip engage the medullary canal wall, reducing surgical time and radiation exposure during fracture stabilization.