Joint Implants TRIZ Cases

Transverse sliding projections replace pivoting mechanisms in a cervical motion disc inserter, resolving engagement instability during spinal surgery.

Four pile screws anchor a 3D-printed porous titanium mesh cup to distribute loads and promote osseointegration.

Variable density maps compensate for material erosion in biodegradable implants, preserving load-bearing capacity during degradation.

A prosthetic hip joint implant uses a fixed covering on the femoral head to maintain continuous contact with the acetabular liner during movement.

An intrapelvic bone plate with nested reduction tools addresses fragment displacements while minimizing blood loss and soft tissue trauma.

Wireless sensors track bone position to resolve the trade-off between alignment precision and device cost in total knee arthroplasty.

Actuator slides a pressing member against the acetabular cup interior to resolve connection stability issues during hip replacement surgeries.

Flared condylar surfaces reduce rotational constraint during deep flexion in total stabilized knee prostheses.

Angled cement pockets in a femoral knee prosthesis component hydraulically load and contain bone cement, preventing cement plowing during positioning.

A biocompatible separation coating on implant contact surfaces prevents cold welding and corrosion while enabling easy removal.

Tangential geometric transitions between socket insert and hip socket close the back-side gap under load to increase breaking load.

A central ramp mechanism drives endplate expansion inside the disc space, resolving installation difficulty while maintaining normal spacing.

Off-axis interfaces on a steerable spacer allow angled manipulation, resolving suboptimal implant positioning that fails to promote lordosis.

Stemless shoulder implant uses button lock fixation to preserve bone stock while maintaining mechanical stability.

A wing-shaped tibial support seals hollow screw holes with a PEEK polymer layer, preventing synovial fluid delivery and osteolysis.

A tibial bearing trial assembly with a pivoting shim resolves the trade-off between rotational stability and adaptability, ensuring precise prosthetic sizing.

Segmented implant uses nested wedge mechanism to expand in narrow spaces, reducing patient trauma during minimally invasive surgery.

Segmented arched bone contacting elements resolve the stability versus bone ingrowth space contradiction in spinal fusion implants.

Preoperative 3D modeling creates patient-specific templates that ensure precise component orientation, reducing malpositioning risks in hip arthroplasty.

A modular femoral knee stem extender uses a threaded junction to adjustably fix the stem position along the anterior-posterior direction.

Screw mechanism adjusts interbody spacer angle intraoperatively for precise spinal alignment.

Segmenting the guide body and handle via a universal locking mechanism resolves misalignment issues in external fixation systems.

Two artificial hip joint parts connect in situ to form a stable bearing surface through small pelvic bone holes.

A graft preparation device shapes tissue implants to mimic natural labrum anatomy, resolving the trade-off between anatomical precision and installation ease.

A sickle-shaped patella clamp uses a finger lever to pivot a second clamping section against the bone.

A modular endoprosthesis uses a connecting pin to join a stem and head, enabling direct load transfer from the support surface to the femoral bone.

Antibiotic dispensing spacer eradicates infection via refillable reservoir, preserving bone stock and avoiding complex revision surgery.

A single instrument combines plate holding and screw guidance using a deflectable arm, eliminating separate tools for glenoid fixation.

A minimally invasive pelvic stabilization method combines anterior and posterior internal fixators for definitive bone support.

Segmented orthopedic implants reduce bone resorption by distributing mechanical stress through a compliant intermediate region.

A shape memory femoral stem expands radially upon heating to exert a locking force against the bone aperture.

A prosthetic foot uses a J-shaped curvilinear spring paired with a spanning leaf spring to distribute stress and return energy.

Kinetic orthopedic measurement system provides real-time force and pressure data for precise prosthetic component selection.

A bowed femoral sleeve accommodates natural anatomy with intersecting bores.

A reciprocating rasp with a cutting head matching augmented component geometry enables precise bone preparation.

A vertebral insert expands laterally to increase surface contact with adjacent vertebral bodies.

Sliding anchors engage a spacer to distribute loads symmetrically, resolving the trade-off between surgical complexity and fixation stability.

Wire mesh support frames molded with biocompatible plates resolve contradictions between mechanical strength and bone integration for large defects.

Segmented osteotomy template matches individual anatomy to eliminate anatomical deviations, reducing operating time and surgical errors.

Segmented bone-interfacing regions preserve underlying bone stock while the IPN hydrogel bearing minimizes wear particles and aseptic loosening.

Metallic coatings applied via plasma vapor deposition increase bone interface friction, preventing post-operative displacement of PEEK spinal implants.

Custom femoral guides use resorbable pins to eliminate post-operative removal steps while maintaining high alignment accuracy during knee implant surgery.

A knee prosthesis uses a coupling component to reposition a tibial ball within spherical end portions for smooth articulation.

Tailored heat treatment modifies Ti64 grain structure, enabling 50-degree bending without cracking for precise anatomical fitting.

Nested wedges drive ramped endplates to expand the implant, reducing footprint for TLIF.

A fixture attaches to an acetabular shell and mounts a curved chisel guide that directs the cutting tool along the outer periphery.

A single intervertebral disc prosthesis uses distinct attaching means to cooperate with various gripping members for flexible surgical implantation.

Movable insert in acetabular cup guides bone fastener at selected angle, preventing backout in deteriorated bone.

Segmented distal stems nested within proximal bodies reduce femoral canal reaming requirements, preserving bone strength while maintaining implant stability.

Segmented tabs and dynamic hinge mechanism resolve structural stability versus motion range adaptability in knee prostheses.