Internal Osteosythesis TRIZ Cases

Integrated blade elements eliminate bone screws, reducing device complexity while maintaining construct stability for direct lateral trans-psoas approaches.

Segmented rod assemblies correct severe scoliosis curvature without fusion, preserving normal spinal motion and reducing surgical risks.

A posterior dynamic stabilization device uses a dual-helix titanium spring and polymer core to regulate spinal elongation and compression.

A biocompatible enclosure with a tubular sidewall and cap hermetically seals rare-earth magnets to maintain stable magnetic field distribution.

Nested balloons create a larger bony void with flat surfaces, reducing single-point pressure and improving cement structure stability.

Axial expansion of an internal ring locks screw heads in place, resolving the trade-off between structural complexity and adaptability.

Nested receiver cavities consolidate fixation points to reduce spinal construct stress and complexity.

U-shaped hook tool and folded flexible wire guide spinal rods between vertebrae, reducing tissue trauma and recovery time.

Retention clip with PEEK spring prevents screw migration by engaging heads during insertion.

Telescopic cannulated member engages bone fasteners at variable angles to resolve versatility and complexity trade-offs in femur fracture fixation.

A gravity-fed bone cement delivery tube manages infusion pressure via a relief valve, preventing soft tissue damage from high-pressure injection.

A surgical instrument uses a calibrated stop mechanism to control tissue removal depth during facet joint fusion procedures.

A robotic manipulator autonomously positions and rotates self-tapping screws along a planned trajectory using navigation feedback.

An expandable surgical retractor transitions from a compressed insertion profile to an enlarged working chamber.

An I-shaped clamp slides along the elongated member to unlock flexible prongs, expanding the head cavity for polyaxial head placement.

Segmentation and color changes resolve cleaning difficulties while maintaining reliable implant fixation.

Segmented pilot apertures reduce insertion force and machining residue while accommodating bone growth materials to enhance long-term screw stability.

Segmented connector components with sliding mechanisms align and lock bilateral spinal rods, reducing operative time during complex contouring procedures.

Segmented porous implants with a flexible spine prevent buckling during kerf curvature adaptation.

An expandable screw anchor prevents loosening by increasing contact area and pullout strength within the spinal bone.

An arthrodesis apparatus applies compressive force across bone tissues by securing an intramedullary projection with a flexible retention member.

Segmentation and dynamics resolve precision-stability trade-offs in open wedge osteotomies, reducing fluoroscopy use and stress-shielding.

A nested rod holder transitions between aligned and angled configurations to deliver fixation rods through small incisions while maintaining precise placement.

Mechanical manipulation of iliac and sacral members localizes pain sources, reducing anatomical disruption from blind injection procedures.

Segmented balloon expands along a single plane to restore bone anatomy while retaining ridges lock the structure in place.

Tensioner extension bridges the gap between surgical ports and implants, reducing procedure time by eliminating repeated threading.

Collinear central axis design eliminates torsional forces on surgical cables, enabling stable fixation without damaging the wire during repeated adjustments.

Intersecting screws create a rigid triangular construct that resists compression and tension forces during weight-bearing.

Segmenting the rod into rigid and elastic components resolves the trade-off between structural strength and dynamic adjustment capability.

Resilient bumper converts tensile forces into compression for dynamic stabilization, reducing invasiveness while preserving natural vertebral motion.

A bone plate screw hole uses a counterbore pinch point to flexibly capture and lock spinal implants.

An expandable interspinous spacer distracts adjacent vertebrae to stabilize the spine while preserving natural motion and reducing facet joint stress.

Rotating arms on the delivery instrument align trajectories for precise fastening, reducing surgical complexity.

Linear motor actuation replaces manual hammering to eliminate physical strain while torque sensors ensure accurate screw placement.

Sliding bone plate segments with toothed ratchets allow progressive post-operative compression to fuse vertebrae.

A pivoting transverse rod installation instrument assembly enables percutaneous placement of spinal connectors.

Co-molded retractor arms attach to pedicle screw tulips to maintain surgical access through small incisions.

A transcutaneous magnetic spacing member adjusts a bone flap height, eliminating second surgeries and infection risks.

Segmented access through a tubular retractor reduces tissue damage while stabilizing the spine.

Segmented proximal femoral nails use a threaded joint to enable controlled rotational correction, reducing soft tissue damage during insertion.

Inject bone filler into the spinous process to prevent fractures from interspinous implant stress.

A spherical wire braid forms a Nitinol cage using a heat-set mold and removable mandrel.

A spinal instrument tube incorporates a retention mechanism to securely hold set screws during surgical alignment procedures.

Segmented rods with resilient bias correct scoliosis while reducing frequent surgical interventions.

A bone anchoring device decouples angular position indication from the clamping mechanism using segmented structures on the head and pressure member.

Nested expandable struts within a percutaneous spinal implant stabilize compressed spinous processes, reducing complications from large incisions.

Segmented stabilization devices anchor to the sacrum, resolving lumbosacral implantation limits while preserving spinal motion.