Internal Osteosythesis TRIZ Cases

An H-shaped anterior cervical plate uses recessed cross connectors to accommodate the esophagus.

A polyaxial screw spinal fixation system uses a rod inserter through an insertion cannula to connect fixation rods.

Segmented coating layers prevent tissue integration to resolve the trade-off between healing reliability and ease of operation.

A self-centering femoral adjustment member measures lateral and medial ligament forces to enable precise tension balancing during revision knee surgery.

Sliding wedges open blades to grip receiver elements, simplifying complex minimally invasive spinal fixation procedures.

A proximal-femur intraosseous release device integrates medicine delivery with a spring-loaded triangular block mechanism for immediate fracture fixation.

Non-parallel cam surfaces in a bi-directional rod holder resolve unidirectional rotation limits, reducing surgical incision length.

A force adjustable spring distractor uses a threaded rod to elongate helical springs and apply separation force to adjacent bone segments.

A multi-axial spinal fixation system uses an adjustable rod connector to enable selective revision of the construct without removing implanted fasteners.

Offset drive shaft aligns bone anchor head against abutment surface, eliminating play and ensuring precise insertion.

Prosthesis guide channel aligns with tibial opening to allow minimally invasive tibia lengthening without decoupling the joint.

Angled receiving holes in lamina plates guide spinal fixation elements along optimized trajectories, reducing tissue trauma and injury risk during implantation.

A rod reduction assembly uses a translation unit to urge spinal fixation rods into anchor housings.

A system generates virtual internal fixtures by analyzing fracture fragment shapes and positions to perform digital bone reduction.

A spinal crosslink device provides translational and rotational freedom between bone attachment devices for precise positioning.

A single-piece bone fusing device integrates anti-rotation fins and barbed ends to prevent rotational misalignment in adjacent phalanges.

A preloaded biologics delivery cannula with an integrated cartridge tamp enables rapid, repeated administration of fusion-promoting materials.

Bonding material fills a spinal stabilization cavity to join fasteners and rods, eliminating high torque requirements and anti-torque tools during installation.

Flanged jaws expand via a pivoting actuator to grasp flat-profile washers, resolving removal difficulties in minimally invasive surgery.

A polyaxial bone screw coupling uses a latching pressure member to provisionally lock the rod without external instruments.

Inward-biased ribs in a stepped housing permit unidirectional spinal rod extension while inhibiting retraction, reducing surgical intervention frequency.

An ultrasonic applicator fluidizes polymer material using high-frequency vibrations and precise pressure.

Segmented interlaminar members linked by adjustable cross-links resolve the contradiction between localized fixation and overall spinal column stability.

Adjustable medial lateral retractor arms and rotatable blades resolve geometric limitations in minimally invasive spinal surgery.

A porous ossomeric mesh and frame member enable osteointegration at the cranio-cervical junction.

Universal surgical instrument guide eliminates k-wire displacement risks by maintaining continuous trajectory alignment across drilling and implant stages.

A multi-cannulated spinal instrument system reduces surgical footprint through nested rod pusher and inserter shaft mechanisms.

Curved cable guides distribute stress across the bone grip, preventing wear and displacement under dynamic abductor forces.

A rotatable bone fastener receiver adjusts spinal rod orientation relative to the vertebral anchor.

A subchondral implant stabilizes bone defects to restore joint function.

A telescoping bone fixation nail nested within an outer sleeve uses a locking screw to constrain axial movement and enhance anchoring strength.

A bone fastener assembly with a spherical adjusting member resolves the contradiction between rigid fixation stability and vertebral misalignment accommodation.

An expandable spinal implant restores intervertebral distance using opposed plates that move apart to maintain vertebral spacing.

Lateral compression from a locking ring secures the anchor head, reducing device size while maintaining reliable locking for spinal surgery.