Joint Implants TRIZ Cases

An asymmetric tibial baseplate with localized periphery geometry and specific keel fins provides enhanced kinematic motion.

A hydraulic ankle joint mechanism adjusts damping resistance dynamically during locomotion.

Hinged arms anchor to the coracoid process, eliminating multiple personnel requirements.

Segmented locking elements stabilize fixation using standard screws, avoiding high plate profiles that complicate wound closure.

A disc replacement device uses convex-concave articulation surfaces to enable controlled translation and rotation between vertebral bodies.

A curved fastening pin enables minimally invasive hip prosthesis insertion through smaller surgical openings.

Modular knee prosthesis with side-mounted augments and angled connectors.

Asymmetric femoral condyles induce axial rotation moments in total knee prosthetics, resolving reduced motion from ligament removal.

A prosthetic acetabular cup inserter uses a shaped resilient ring to grip the inner bearing surface directly.

A slidable hinge and actuated plate mover enable in situ expansion of the spinal cage to resolve insertion difficulties.

A glenoid fossa prosthesis uses a segmented flange design to accommodate scapular curvature, eliminating tissue injury from rigid fixation plates.

A bone graft delivery apparatus uses a plunger with selectable stop positions to control implant advancement through a barrel.

An orthopedic system employs elliptical springs on an augment to secure the component, eliminating trial sizing and reducing procedure time.

Patient-specific instruments replicate pre-degenerated joint states to restore natural knee alignment, correcting misalignment from osteoarthritis wear.

Integrated expandable jaws on a spinal cage rotate spindles to anchor the device, eliminating separate fasteners and reducing surgical trauma.

A tibial prosthesis implantation method uses bone density gauges to determine local tissue properties for tailored component selection.

Segmented components and dynamic stems accommodate varying anatomical dimensions while preventing tissue atrophy during infection treatment.

A polymeric spacer reduces fretting corrosion and heavy metal ion release by dissipating stress concentrations at modular interfaces.

A universal prosthetic head features a truncated-conical portion and spherical projection for dual-mode coupling.

A multi-size inserter-impactor tool features a head with multiple convex profiles of varying radii to engage different acetabular liner sizes.

A tibial trial insert system uses a telescopic coupling arrangement to adjust proximal spacing via shims.

Segmented surfaces with opposing serration angles resist axial forces, while the instrument's friction-reducing mechanism enables precise vertebral realignment.

A removable handling cover allows surgeons to manipulate orthopedic implants without direct contact, preventing contamination from surgical gloves.

A restrictive swelling network constrains hydrogel expansion, balancing osmotic pressure against joint loads for immediate mechanical support.

Segmented nitinol spacers resolve the trade-off between joint stability and motion limitation by adapting to physiological loads.

Snap-fit clips secure the assembly, avoiding screw installation risks near the spinal cord.

A knee spacer implant uses a trochlear trench to constrain joint rotation while antibiotic reservoirs deliver time-controlled medication.

A mobile tibial assembly uses a closed track to retain the insert stem.

Segmented sacroiliac fusion implant uses a smaller anchor portion to overcome installation difficulties and improve patient suitability.

Segmented femoral implant stems prevent stress shielding and displacement by distributing longitudinal loads through stepped profiles.

Interconnected links with hinges and a center cam enable lateral and vertical expansion of the fusion cage.

A surgical assembly tool applies controlled axial force to align hip implant tapers.

A hinged knee spacer links femoral and tibial components via a protrusion mechanism to maintain joint stability while allowing controlled mobility.

A composite ball head combines a metal core with a non-metallic shell to enhance bearing capacity and joint mobility in artificial hip replacements.

Segmented cutting blocks define trochlear cavities without compromising the intramedullary canal, enabling complete prosthetic volume replacement.

Segmented plate recesses increase core contact area to replicate natural spinal stiffness without increasing device thickness.

Sintered lattice struts enable bone infiltration while maintaining structural rigidity in spinal fusion implants.

An adjustable alignment tool positions multiple prosthesis components relative to bone surfaces.

A universal handle accommodates multiple orthopaedic instrument shafts through an open-ended channel design.

An artificial intervertebral disc employs an off-axis convex joint block to replicate natural spinal motion and reduce wear.

Dual-thread interlocking screws prevent micromotion and osteolysis in reverse hip acetabular cups by anchoring firmly in cancellous bone.

Segmenting the femoral component into multiple thicknesses resolves the trade-off between device complexity and anatomical adaptability in lateral procedures.

A flexible arm intervertebral frame securely engages cortical and cancellous spacer bodies to maximize bone fusion speed.

A spinal plate uses a blocking screw to prevent bone screw back-out during fusion procedures.

Virtual planning and movement simulation customize hip implants to prevent impingement while preserving bone structure.

A trial implant plane guide extends beyond the stem to assess position relative to anatomical features.

Combining phenolic and curcuminoid antioxidants regenerates free radical scavengers, reducing irradiation doses while preserving mechanical properties.

Medializing the hinge post axis within a thickened keel centralizes material distribution, preventing lateral breakout in large constrained prosthetic knees.

A tibial tray with an inferiorly-extending wall fits into cancellous bone cavities to increase surface area contact.