Joint Implants TRIZ Cases

A lateral surgical approach positions a total disc replacement system without damaging the anterior longitudinal ligament.

Customized patient-specific cutting guides replace complex jigs to improve bone cutting accuracy and reduce operative time.

A porous tapered diaphyseal implant resolves geometry mismatch and stress shielding by enabling reliable bone ingrowth.

Divergent screw boreholes in the fixation plate provide enhanced stability while reducing tissue intrusion during lateral insertion.

Flexible impermeable enclosure maintains vertebral spacing and contains curable substance, preventing migration during surgical insertion.

Matched resonant frequencies between primary and secondary coils reduce adjustment complexity while maintaining efficient power transfer.

Chamfered intervertebral spacers minimize disc space distraction and endplate scraping by reducing the diagonal distance between opposing edges.

Asymmetric projections and recesses guide coupled motion to restore neutral position under compression, reducing stress on surrounding tissues.

A three-part intervertebral disk prosthesis uses a guide ridge sliding within a groove to enable controlled multi-directional spinal motion.

A central compression screw secures the glenosphere to the metaglene element via a threaded connector interface.

A unicondylar resurfacing femoral component with a polymeric articulation member enables direct tibial contact.

A modular elbow implant system enables surgeons to select linked or unlinked constraints and cemented or cementless fixation during surgery.

A spinal interbody implant uses a configured retention area and plate to lock bone screws in place.

Asymmetric tibia bearing surface accommodates femur sliding motion to resolve the contradiction between fixed pivot stability and kinematic mobility.

Aligning the joint line parallel to the horizontal plane eliminates transverse shear forces that accelerate wear on knee prostheses.

A compressible seal engages a tapered trunnion to form a fluid-tight closure between femoral stem and head components.

Rotatable insert adjusts liner thickness within a humeral cup, eliminating extreme reduction force and tissue injury risks.

Patient-specific acetabulum resurfacing aid aligns prostheses precisely, reducing manual error and surgical time.

A femoral trial component uses a radial arc on posterior condyles to self-adjust rotation during flexion.

A standardized mold produces patient-customized tibial prostheses via additive manufacturing parameter adjustments.

Porous sponge structure absorbs mechanical forces while maintaining dimensional stability in tibia implants.

Segmented porosity regions balance mechanical strength with osteointegration needs, resolving the trade-off between load-bearing capacity and bone preservation.

Acoustic sensors record cutting signals to assess real-time bone density and guide implant placement.

Self-threading angled bone screw bores in a PEEK lumbar implant prevent screw backout, eliminating the need for separate bone grafts.

An extension rod with a tapered flow channel segments bio-ink to prevent clogging and mechanical stress on cells during printing.

Extended portion fixed to the zygomaticofrontal suture prevents temporalis muscle hollowing while maintaining zygomatic bone appearance.