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.

A curved interbody spacer uses a matching guide rail on the distal end of a surgical tool to fit into engagement portions for precise placement.

Plastically deformable links in an expandable spinal implant rotate via screw advancement to restore lordosis through small surgical openings.

A convex intermediate segment bridges joint components and bone tissue using a movable locking mechanism.

Flexible wall membrane in spinal interbody cages provides directional support to bone fasteners, preventing screw migration under dynamic loads.

An elastic ring with a transverse slot deforms to adjust the acetabular cup orientation.

Magnetic unlocking mechanism adjusts knee flexion angles for sitting comfort while maintaining rigid locking during weight-bearing activities.

A blade-like hip prosthesis stem navigates the femoral canal with a curved proximal geometry.

An adjustable surgical impactor uses spring-loaded arms and a threaded shaft to hold prosthetic implants in a predetermined position.

A PEEK femur condyle buffers a UHMWPE tibia liner to reduce wear, addressing metal ion toxicity and stress shielding in artificial knee joints.

Grounding conductive materials shields ultrasonic sensors from parasitic coupling, enabling accurate measurement of force and pressure during surgery.

A polymeric shoulder implant head uses a metal substrate and taper adaptor to reduce weight while maintaining structural strength.

Segmented bodies and dynamic camming mechanisms prevent expulsion while maximizing fusion area through selective orientation.

Segmented targeting kit guides osteotome and curette devices through narrow access tunnels to remove bony ingrowth while preserving surrounding tissue volume.

An intermediary metal layer enables solid-state diffusion between porous tantalum and cobalt-chromium implants, resolving limited solubility.

Segmented base and displaceable element maintain enclosed volume through continuous jaw overlap, reducing device complexity while retaining filling material.

A tibial insert post features a recessed side to allow femoral rotation.

Solvent-free molten polymer electrospinning creates a liquid rope coil scaffold that promotes tissue ingrowth without harsh chemical damage.

A lever-based impactor-extractor tool secures prosthetic stems via taper connectors for precise surgical insertion.

A patient-specific surgical guide directs cutting tools to shape bone augments matching pre-planned 3D models.

A pre-assembled modular surgical jig guides precise glenoid component orientation and sizing during shoulder replacement procedures.

A spinal spacer integrates screw holes and anchor channels to support interchangeable fixation plates.

A curved spinal insertion tool uses a driveshaft to rotate an actuator for precise implant positioning.

Sensor-based measurement of soft tissue tensions guides controller adjustments to prevent inelastic deformation.

A tibial implant features a postero-lateral notch to accommodate the popliteus tendon passage.

A parabolic haptic volume constrains surgical reamers within defined boundaries to enable single-stage acetabular preparation.