Internal Osteosythesis TRIZ Cases

A resilient cable plug retains surgical wires at multiple angles, reducing shear stresses that shift bone plates.

Segmented retractor assembly with independent offset blade creates operative corridor for L5-S1 access without patient repositioning.

A hybrid fixation system combining a bone plate with an intramedullary nail to stabilize proximal humerus fractures.

A hollow prosthetic lamina implant accommodates autologous bone grafts to restore spinal structure.

Retractable members extend within the intramedullary canal to anchor a tibia stem, resolving pistoning and loosening issues in ankle replacement.

A spinal implant connector uses a flexibly deformable wall to securely receive and lock fixation components.

Segmented crosslinking apparatus with adjustable bolts stabilizes facet joint implants while reducing required bone mass.

Flexible sleeve and retaining member guide intramedullary nails through the suprapatellar region, preventing bone fragment misalignment from quadriceps pull.

Dissimilar bearing materials in the ball-and-socket joint reduce wear debris generation while maintaining segmental motility and stabilizing posterior elements.

Non-circular shaped sections in a telescopic intramedullary nail constrain rotation, enabling easy rod extraction without on-site cutting or seizure.

A tibial nail design aligns with the tuberositas tibiae plane to facilitate smooth insertion along the bone's symmetry axis.

Segmented humeral fixation device uses degradable polymer to transition mechanical support from implant to healing bone, reducing stress concentration.

An expandable spinal implant stabilizes adjacent spinous processes through a minimally invasive delivery system.

An intermediary spacer eliminates bone-on-bone contact while preserving anatomical structures, resolving the trade-off between pain relief and mobility.

A bone anchor assembly uses a scraper ring to sweep debris from the capture recess during insertion.

Pivot-connected arms rotate spinal constructs to restore alignment, reducing invasiveness and recovery time.

Asymmetric cross-sectional nail design prevents migration and rotation in clavicle fractures, reducing surgical complexity and healing time.

A selectively adjustable interspinous device uses nested wings to maintain distraction height between vertebral members.

Optical sensors detect hole positions to eliminate radiation exposure during intramedullary nail fixation.

A dynamic vertebral construct rod enables relative translation between fastening elements to accommodate physiological movement.

Pivotally connected guide arms establish precise angular trajectories for spinal fixation elements, reducing fluoroscopy reliance and radiation exposure.

A bone retention apparatus uses a deflectable locking member to secure a movable connector within a housing passage along a rod axis.

A retractor blade assembly uses a shim to connect a pedicle screw and surgical blade.

Asymmetric pin holes in a radiotransparent base stabilize navigation trackers on bone, preventing displacement from accidental tool impacts.

Nested cannulated shafts expand the driving member to secure implants, reducing assembly complexity and wear.

Segmented knurled surfaces lock the screw assembly in the nail, stabilizing femoral fractures without complex manufacturing.

Threaded couplers connect guidewire segments to extend length, preventing unintended travel and improving control in complex spinal surgeries.

Embedded magnets in bone screws generate continuous traction to maintain disc height and relieve cervical pain without manual operation.

Variable fiber orientation in laminated composite fixators matches implant stiffness to cortical bone, eliminating stress shielding and allergic reactions.

A bidirectional thermally actuated component uses phase-change wax to drive precise mechanical movement in medical devices.

An intrabody extension device mounts the drive rod in tension to shorten its loaded length, reducing torque requirements for bone growth.

A single incision spinal fusion procedure accesses the spine through Kambin's triangle to insert interbody and interspinous implants.

An elastic stem deforms to navigate tight spaces, then recovers to lock within a helical groove, reducing insertion time and preventing plug exit.

Spherical joints and cable actuation eliminate mechanical backlash in orthopedic fixators, enabling adjustable stiffness for bone healing.

Moveable guide portions balance knee ligaments and position cutting block holes without displacing the patella from its anatomical position.

A connection assembly uses a plate member to transfer lateral force from a set screw into an interference fit for secure locking.

A warping interpolation function modifies base part digital models to match target anatomical shapes for customized medical devices.

Modular plating system with sizing instrument determines correct clamp size and torque value for stable peri-implant fixation.

A carbon fiber plate reinforced with metal alloy wires generates electromagnetic fields to stimulate bone healing.

Segments patient populations by bone quality to optimize implant anchoring element placement, reducing stress accumulation and improving fixation reliability.

A spinal stabilization system couples a flexible element to a rigid anchor using an axial bore and fastener mechanism.

Lateral clamp design reduces component thickness by enabling medial-lateral bar insertion, avoiding complex vertical stacking.

A segmented bone plate uses a transition zone to adapt to complex fracture geometries.

Visible markings on tubular members indicate rod length while a counter torque tube prevents rotation, reducing tissue disruption during spinal fusion.

Nested guide sheaths and ratchet retention mechanisms prevent bone rotation and implant backout during fixation.

Inverting lateral placement to a medial position reduces soft tissue irritation, bursitis, and plate migration while maintaining bone compression strength.

A pedicle screw construct with a taper lock and beveled collet enables smooth angular displacement within the spinal implant assembly.

Spring-loaded locking clips in a spinal crosslink mechanism compress to unlock rotation, then auto-lock interlocking teeth to eliminate manual knob turning.

An implanted electroactive polymer actuator stiffens airway walls to prevent collapse, eliminating CPAP mask side effects.

A polyaxial spinal anchor assembly uses a bone anchor head and neck to engage a receiver socket cavity via rotational and translational movement.