Joint Implants TRIZ Cases

A glenosphere helper device aligns the implant using a guide pin and flange system.

A helically twisted hip prosthesis stem adjusts to the femoral channel configuration through elastic deformation.

Expandable intervertebral implant corrects scoliosis and promotes bony fusion by dynamically adjusting spinal alignment.

A mold body applies flowable cement to prosthetic implants via an inlet port, preventing leathery skin formation and enhancing micro-mechanical interlock.

Glass solder bonds ceramic inserts to metal bases, reducing abrasive wear and extending service life.

A surgical instrument uses a tiltable movable pin to exert compressive force on the inner surface of a joint implant.

A femoral cam engages a tibial post to provide anterior stabilization without requiring the ACL.

Segmenting the coupling body into a rigid base and soft insert protects the cone from scratches, ensuring secure self-locking during extraction.

Segmenting the internal mechanism into removable cartridges allows users to replace components themselves, eliminating professional repair costs and downtime.

Composite blades and an inflation mechanism counteract musculature load to prevent distal closure, enabling clear x-ray imaging of interbody device placement.

A microwave transceiver generates and receives electromagnetic signals to determine internal body status without physical penetration.

Slidably expandable endplate planks increase the implant footprint after insertion to enhance spinal stability.

A concave part on an artificial hip joint stem allows the inserter to approach from oblique angles.

Roughening PEEK implant surfaces via abrasive blasting resolves weak bond strength between polymeric tibial trays and bone cement.

A bone fixation screw uses a compressible wing element to expand contact area against the bone cortex.

Wedge-driven expansion mechanisms adjust intervertebral fusion implant dimensions to match disc space geometry, preventing vascular damage during insertion.

An expandable interbody implant uses a wedge and pin mechanism to adjust height between vertebral endplates.

Virtual 3-D modeling and physical outriggers position the fibular flap assembly accurately, preserving jaw articulation.

Adjusting the anterior flange length relative to the posterior flange reduces friction against soft tissues while preserving the anterior femoral fat pad.

Radial flanges augment fixation strength to stabilize shoulder prostheses despite glenoid bone loss.

A vertebral implant system uses a slidable staple and pivotable anchor frame to secure bone fixation.

A thermochromic film wraps bone cement to detect cure stages via color changes.

A pivoting tibial resection guide transfers femoral alignment data to the tibia via a linking drill assembly.

This device minimizes surgical burdens by aspirating, concentrating, and delivering composite bone grafts in a single integrated workflow.

Segmented prosthetic components and a nested retention trap resolve the trade-off between anatomical adaptability and assembly complexity.

C-shaped housing impactor with conical wedging assembly secures double mobility cup implants during surgical insertion.

Robotic additive manufacturing system prints customized spinal implants directly inside the patient body.

A bi-modal ankle-foot device uses a lockable joint to transition between curved and flattened shapes.

Controlled combustion removes surface defects from joint implant polymers, preventing particle detachment and osteolysis.

A femoral stem with a beveled distal end enables inclined insertion into the medullary canal.

A lateral distractor device adjusts corpectomy cage height using movable blades and a clip inserter mechanism.

A robotic system holds an orthopedic implant in position until cement cures.

Bioactive surface roughening on corpectomy implants promotes osteointegration, addressing slow bone growth and reduced effectiveness from lack of encapsulation.

Optimized cam curvature transitions contact points during flexion, reducing wear while maintaining posterior stability.

Segmented coiling members enable minimally invasive spinal fusion by reducing tissue disruption through elastic shape transition.

A curved bearing surface on a tibial shelf prosthetic component prevents meniscal dislocation by increasing entrapment without widening the femoral-tibial gap.

Segmented porous and nonporous metal regions enable secure fixation while resolving manufacturing complexity for shoulder prosthetics.

Porous protruding steps on the stem encourage bone ingrowth, resolving fixation reliability without cement.

Movable supporting plates expand the spacer to restore intervertebral height, resolving size mismatch issues in unadjustable implants.

Segmented plates linked by connecting arms stabilize symphysis ruptures while preserving surgical access and reducing device complexity.

Combination bur template and spacer block guide femoral condyle resection while balancing flexion extension gaps to minimize bone removal.

Locking cams engage undercuts on the implant body to replace frictional connections that fail under high loading forces.

Inflatable spinal implants urge vertebrae toward a patient-defined comfortable position.

Heating a solid polymer below its melting point displaces a porogen layer to create a matrix, increasing shear strength while promoting tissue ingrowth.

Segmented modules with self-aligning pins eliminate complex adjustments, reducing surgical time and easing operation.

Segmenting the tibial tubercle creates a working channel that reduces tissue disruption and infection risk during arthroplasty.

Nested glenoid cups and multi-point fixation arms prevent dislocation in reverse shoulder implants.

A curved keel mechanically engages vertebral bodies to prevent screw expulsion and nerve trauma.

An expandable interbody spacer uses a locking screw to rotate an actuator, moving endplates vertically to increase height.