External Osteosynthesis TRIZ Cases

A ball-and-socket joint swivably connects an upper support to elongated connectors in an external fixation device.

Lateral translation of the capture head resolves versatility complexity trade-offs by accommodating diverse fracture patterns without complex assembly.

A polyaxial pivot housing system enables flexible bone alignment through a dynamic locking mechanism.

A dynamization strut uses an internal sleeve and bushing to compress a biasing member without changing total length.

A patient-specific surgical guide directs wire insertion along precise trajectories using 3D anatomical models.

Nested coil springs in a dynamic external fixation device reduce protrusion length and patient discomfort during bone fracture reduction.

A clamp uses separate manual and tool-operated fasteners to lock coupling elements.

Segmented clamps with spherical surfaces eliminate spanning members, reducing interference with healing while maintaining stabilization.

Nested ratchet clamps rotate to lock pins, reducing bulky assembly time while maintaining reliable fracture stabilization.

Segmented arch supports and universal retainers reduce device weight while maintaining reliable fracture stabilization.

Segmented pin opening edges clamp pins against plate surfaces, distributing tightening forces to prevent structural gaping and misalignment.

Rotational square rod engagement and a dedicated wire bending apparatus reduce infection risk and surgical pain.

Removable orthopaedic rails integrate load sensors to monitor limb pressure, preventing excessive loading on fragile bones.

Segmented fixation plates replace circular rings to improve wound cleaning access while maintaining stability.

A swivel hinge wire tensioner rotates to align with angled wires crossing external bone fixation device edges.

Relocating adjustment mechanisms to the terminal end allows patients to manipulate ring orientation without disassembling the external fixation frame.

A cam mechanism opens jaws to receive fixation elements.

A swivel external fixation clamp uses a post and axle mechanism to enable pitch axis rotation.

Segmented body adheres to patient limb while positioning members slide along threaded rods, reducing fixator weight and volume to ease surgical procedures.

An adjustable calcaneal fixation device enables dynamic distraction and precise positioning of the heel bone across multiple planes.

A manual adjustment tool uses a plunger and feedback mechanism to rotate fixation struts.

A radiolucent pelvic reduction scaffold uses carbon fiber rings and crossbars to stabilize fractured bones.

A clamp with a C-shaped flexible bridge adjusts screw housing seats to accommodate bone screws of varying diameters.

Blocking sleeve maintains bone pin angular orientation during compression or distraction adjustment.

Spring-loaded ball mechanism provides haptic feedback on actuation degree, resolving limited patient access to adjustment points.

A ratcheting strut system adjusts length via coaxial toothed tubes and a threaded rod to position bone fragments.

A pivoting half-ring assembly on an external fixation frame enables dynamic adjustment of the foot and ankle positioning.

A universal joint hinge locks attachment angles using a clevis pin and frictional interference mechanism.

A monoplanar device uses a single-axis hinge joint to stabilize anatomical joints while enabling controlled distraction via an integrated screw mechanism.

An engagement body with projections secures a ring slot to prevent slippage and maintain bone alignment.

Merged pin assemblies reduce infection risk and installation time while maintaining reliable temporary fracture stabilization.

Segmented design with dynamic adjustment mechanisms stabilizes patella fractures while minimizing surgical trauma and avoiding secondary operations.

A bone pin connection device integrates a guiding tube and locking mechanism to secure pins.

An integrated fixation bolt uses an advance nut to move a wire locking device, eliminating separate tensioners.

A segmented frame with rotatable pin inserters resolves the contradiction between bulky device complexity and reliable fixation effectiveness.

Automated traction mechanisms replace manual assistants to maintain precise bone alignment during intramedullary nailing.

Asymmetric locking surfaces on pin fixation bolts prevent rotational movement, eliminating loosening risks at the bone pin interface.

Deformable spheres in the locking mechanism compress against unicortical pins, creating a rigid structure that overcomes limited bone penetration stability.

Sliding sleeves within a housing enable rapid length adjustment, reducing time spent aligning non-parallel rings during bone stabilization.

A wire tensioning tip engages a fixation bolt to incrementally tighten wires, eliminating slippage risks from non-orthogonal orientations.

A conical projecting part jams a helical spring to prevent pivoting and ensure stable bone traction.

A latch assembly stores spring energy to drive jaw closure upon insertion.

A hole transporter extends fixator ring attachment points using a beam and parallel flanges.

A press-connector mechanism enables six degrees of freedom in external fixation devices for bone fracture stabilization.

A coupling member connects radius and metacarpus fixing members via a force adjusting mechanism.

A force-dependent rotation control mechanism enables precise bidirectional adjustment of a pediatric mandibular distractor drive rod.

A dynamization tab connects fixation struts to an external ring using a biasing mechanism.

Segmented attachments with auxiliary connectors enable side bar insertion without disassembly, reducing component loss risk.

Rotatable collet clamps secure bone pins through perforated balls, resolving bulky device complexity while maintaining reliable fixation.

Segmenting the device into modular components reduces bulk while maintaining precise distraction control for healing joints.