Joint Implants TRIZ Cases

Sliding spacers interlock with tibial trays to simplify insertion and remove, reducing trial variant complexity.

Asymmetric metaphyseal sleeves with terraced wings guide bone preparation through hard sclerotic interference, ensuring proper implant positioning.

Additive manufactured cutting guides feature unique negative contours matching femoral condyles, resolving generic instrument misalignment issues.

An expandable inter-body fusion device uses a longitudinal insert to adjust plate spacing for precise spinal alignment.

Anchoring elements with multi-planar surface features resist axial and rotational forces in shoulder implants.

Wrought powder metallurgy creates dense cobalt-chromium-molybdenum stems that eliminate fractures from conventional material weaknesses.

A hinge joint endoprosthesis uses interlocking receptacle and body structures to switch between mobile and locked states via a removable locking element.

A facet fusion tube assembly anchors to adjacent instruments via an outer clip and aligns tools with a centering cap.

A glenoid assembly uses a flexible base component to align non-parallel pegs with drilled bores during implantation.

Preformed tibial and femoral elements with increasing curvature radii eliminate manual shaping, reducing surgery time and lateral stress exposure.

Protrusions on the acetabular cup engage corresponding bone recesses to eliminate gaps and misalignment caused by manual reaming errors.

Surface treatment alignment marks on a prosthetic cup guide correct positioning, reducing incorrect implantation and wear rates.

A telescoping intervertebral spacer uses fluid pressure to expand inner and outer cylinders for adjustable vertebral distraction.

A reverse shoulder glenoid prosthesis uses modular attachments to enhance implant fixation and tissue stability.

A pivotable interbody cage allows dynamic fastener trajectory adjustment to avoid the iliac crest and lumbar plexus during lateral lumbar interbody fusion.

Merging the expander inside the cup engaging element reduces separate parts for sterilization while maintaining reliable cup expansion capability.

Metallic alignment rods correlate anatomical landmarks with the cup inserter to ensure precise orientation regardless of patient tilt.

A surgical instrument uses a bendable attachment element to engage and manipulate prosthetic implants without direct contact.

Porosity gradient bone engagement pad improves fixation while reducing wear debris.

Segmented base and anchor members provide initial pull-out resistance while preserving bone volume for long-term fixation.

Segmented plate legs avoid tendon radiation zones to reduce soft tissue injury while maintaining tensile force absorption.

Segmented shaft anchoring part allows independent extraction via bone channel, reducing infection risk during revision surgery.

A tapered wedge on a glenoid baseplate compensates for bone loss and corrects the insertion axis, minimizing unnecessary bone cutting.