Joint Implants TRIZ Cases

A modular femoral prosthesis uses an on-axis neck/stem junction to align the coupling member with the stem axis.

An orthopaedic implant system integrates a reservoir and channels to deliver therapeutic agents directly to the treatment site.

Non-circular cross-sections and composite alloys at the modular junction resolve trunnionosis wear while maintaining leg length customization.

A unilateral expandable spinal prosthesis restores natural motion by adjusting height via threaded members and resilient bands, avoiding disc fusion.

Segmentation separates the smooth inserter from the textured cage, reducing insertion resistance and protecting vertebral endplates.

Superelastic adapter concentrates load on metal cone while distributing stress across ceramic joint ball interface.

Pre-formed modular components replace manual cement shaping, reducing operation duration while adapting to patient dimensions.

A collapsible venous valve scaffold alternates between open and closed configurations to manage blood flow direction.

Segmented femoral condyle replacement preserves intact meniscus and tibial plateau, avoiding unnecessary tissue removal during knee surgery.

A powered orthopedic impactor uses a ratchet coupling and spring-loaded striking system to deliver controlled linear impacts.

A hydraulic heel-height adjustment device integrates a linear piston within the prosthetic shin to pivot the foot-mounting connector.

An asymmetric orthopedic plate resolves screw impingement by using diverging screw holes to achieve multiplanar fixation without soft tissue interference.

A cement restrictor inserter instrument uses a spacer to position a visible depth guide feature relative to the shaft for precise bone alignment.

Surface projections on the interbody spacer facilitate easier insertion while reducing tissue damage during spinal fusion procedures.

Hybrid cam geometry transitions contact points during flexion, resolving the trade-off between stability and range of motion in knee prostheses.

A glenoidal implant anchoring stud features a central hole for trephine guidance during surgical removal.

An aligned rod and spring mechanism deliver controlled impact force to seat ceramic inserts, preventing misalignment damage during hip cup assembly.

A polyaxial reaming apparatus rotates a cutting head around an implanted guide wire to form bone beds at adjustable angles.

Integrated graded radiopacity calibration tool provides bone density reference levels within spinal fusion implants.

A femur prosthetic stem features a back hollow portion and divergent side wings to enhance bone-prosthesis contact.

Custom 3D printed TMJ implants use polished condyle surfaces to lower friction and infection risk while matching patient anatomy.

Detachable titanium covers on a polymeric cage enable precise surgical placement and enhanced fusion assessment.

Expandable regions fill anatomical voids, resolving placement trade-offs while strengthening bone integration.

Merges the guide rod with the implant to eliminate separate attachment steps, reducing insertion time and complexity while maintaining precise orientation.

Threaded cup body with asymmetric fins secures fixation without cement, reducing bone removal and enabling immediate joint use.

Segmented rivets join within the annulus wall to cover both surfaces, preventing nucleus leakage and re-tearing without disrupting disc integrity.

A rotatable intervertebral implant enables precise surgical placement within the spine.

A press-like device cuts cartilage into precise shapes using interchangeable blades and guide imprints.

Spacing means maintain flexion gap during femoral bone cuts, reducing soft tissue balancing needs.

Deformable pin projections on a plastic patellar prosthesis provide mechanical restraint during cement curing, eliminating the need for external clamps.

Nested set screws expand the unitary body vertically, reducing mechanical footprint while maximizing internal volume for bone graft materials.

Rigid constraint means on apposition members limit lateral motion, resolving the trade-off between adaptability and reliability in intervertebral implants.

A surgical instrument uses a ramp to rotate a lock for secure interbody implantation.

Segmenting the load bearing ring from the retention component prevents implant migration while maintaining spinal stability.

Segmented intervertebral fusion device with flexible fingers and spring bias mechanism for secure core component retention.

Segmented locking apertures enable longitudinal compression of bone fragments during screw insertion.

Segmented femoral condylar resection arthroplasty preserves the meniscus and reduces bone loss compared to traditional unicompartmental knee arthroplasty.

A U-shaped intervertebral implant uses a specialized inserter tool to attach and lock the device without threads or screws.

Rotating members expand nested cage segments to adapt the implant to varying spinal spaces while maintaining structural rigidity.

Asymmetric tibial bearing surfaces guide femoral rollback and rotation, restoring anterior-posterior stability without restricting rotational laxity.

A locating system determines reference points in bone structures using a mechanical probe, eliminating harmful radiation exposure.

Segmented offset components adjust longitudinal alignment to resolve mismatch issues in joint prostheses.

A spinal implant uses a rotatable actuator to translate a pivot axis, moving links within a cavity to adjust expansion height.

Segmenting the implant into specific tibial and femoral components with a mobile bearing preserves healthy tissue and reduces recovery time.

A spinal implant uses a retainer to secure a distractor anchor within an elliptical bone tray.

Localized slots modify tibial stiffness to simulate natural bone loading and prevent density loss.

Interlocking bone implant components engage non-planar bone features to secure fixation without separate fasteners.

A single-use rotator cuff graft deployment device uses a nitinol expansion mechanism to position and compress biological tissue.

Segmenting the fossa component into a fixed backing and removable lining resolves the contradiction between structural stability and ease of repair.

A temporary elbow spacer device incorporates a hinge joint connecting humeral and ulnar sections to enable dynamic limb movement.