Internal Osteosythesis TRIZ Cases

A biasing member tensions a stem to secure an implant against bone.

A spinal implant cap uses a deformable ring to provide tactile feedback during locking.

A derotation reducer linkage uses a polyaxial locking connector to enable rigid rotation of spinal segments for precise curvature correction.

A reinforcing member couples to an expandable medical implant tubular body to provide supplemental bending strength for controlled manipulation.

Angled guide holes in a bidirectional fixation steel plate clamp an intramedullary nail to resolve fracture end instability and prevent nonunion.

Deflectable legs in a one-piece fork head accommodate larger bone anchors, reducing component complexity and manufacturing costs.

Ratcheting expandable corpectomy cages use elastic deformation to secure height, reducing incision size while maintaining structural support.

Segmented threaded bone pin halves maintain joint alignment during healing while eliminating post-surgical complications from permanent implants.

Rounded flexible printed circuits pack high-density signal lines into narrow tubes, resolving vibration disturbance and attenuation during spine surgery.

Segmented connectors allow lateral adjustment for spinal contours while the integrated rod design resists torsional loads.

Fluoroscopic guidance replaces direct visualization to minimize tissue disruption and collateral damage during percutaneous spinal interbody fusion.

A surgical retaining screw uses a conical screw sleeve expanding into a bearing sleeve to create a secure frictional connection.

Photo-initiated bone cement cures with electromagnetic radiation to stabilize vertebral fractures while minimizing leakage risks.

A bone fixation device uses a sandwiching part to compress and hold bone elements securely against a hook.

A lamina plate assembly restores posterior tension bands to support spinal structures after laminectomy.

A bone cutting tool guided by a trajectory control sleeve forms a transcorporeal access channel through the vertebral body.

A floating locking insert uses an asymmetric collar to align and lock fasteners within a plate aperture for orthopedic procedures.

A spinous process fixation device stabilizes vertebrae using adjustable pivot arms that lock onto midline bone structures.

A spinal construct uses telescoping rods and outrigger plates to provide stable, adjustable fixation for growing vertebrae.

An extender uses expandable capture members to secure bone fasteners during spinal surgery.

Integrated intramedullary and extramedullary fixation resolves multi-planar deformity alignment challenges through micro-adjustable cannulated framework.

A spinal implant collet mechanism rotates to expand and secure vertebral rods with minimal manual force.

A spinal alignment assembly uses a cable system to gradually pull vertebrae into lateral position.

Variable yield strength from heat treated rhenium alloys enables single screw designs, reducing spinal surgery complexity.

Segmenting the spinal rod assembly into modular components resolves the trade-off between structural strength and surgical maneuverability.

A cross-connector with adjustable length and angular orientation stabilizes spinal rods.

A bone compression screw integrates a hook component with anti-rotation features to secure fixation.

A driver instrument uses a tapered drive tip and slidable slap-hammer handle to retain and impact fasteners.

Segmented attachment pads secure the device while nested expandable spacers increase spinal canal volume for improved stability.

Segmented fixation via a curved nail bypasses the subtalar joint to prevent joint destruction and maintain natural hindfoot mobility.

Segmented housings and a ring member reduce manufacturing costs while ensuring secure vertebral attachment.

A spinal fixation device uses a threaded post to transition lateral blades between closed and open positions.

Offset pivotal coupling allows relative rotation during elongation, reducing growth plate strain and extending retention time.

Segmented percutaneous openings with an intermediary access sleeve reduce soft tissue damage while maintaining reliable vertebral stabilization.

A combination surgical instrument uses nested sleeves to perform rod reduction, vertebral derotation, and setscrew insertion in a single tool.

Pivot-based rocker reducer instruments engage vertebra receivers and limit clamping force to prevent tissue damage during spinal rod reduction.

Porous metal pilings reconstruct the acetabulum to resolve bone loss and immune response issues in revision hip surgery.

Replacing circular screws with asymmetric pegs improves load-bearing capacity, while thermoplastic anchoring eliminates thick plates for flush bone integration.

A hip joint device uses a positioning shaft to guide prosthetic components into the femur and pelvic bone for precise alignment.

Breakable head tabs flex into a plate groove to prevent screw backout under vertebral motion, resolving retention reliability without complex locking tools.

A polymer body surrounding a metal structural portion prevents galvanic corrosion between dissimilar metals while maintaining structural strength.

Segmented spacer and plate design reduces inventory costs by enabling multi-plane alignment without complex stepped plate manufacturing.

A rotatable threaded shaft elevates the lamina via an adjustable stop, increasing spinal canal area while reducing muscle damage.

A transdiscal screw assembly uses a non-linear curved trajectory to increase pull-out resistance.

A cable saddle with loops and reliefs distributes cerclage tension, preventing subsidence into osteoporotic bone.

A rod reducer translates shaft rotation into linear anvil movement to engage spinal bone screws.

Segmenting the anchor with a temporary extension resolves the trade-off between minimizing tissue trauma and maintaining surgical access.

Eccentric rotating bearings enable dynamic compression of bone segments while adapting to uneven surfaces without distortion.

A spacer body uses a bypass passage to distribute filler for simultaneous expansion, preventing displacement caused by asymmetric filling.

Built-in resonators amplify mechanical waves at the treatment site, overcoming energy attenuation in deep tissue.