Joint Implants TRIZ Cases

A hydraulic prosthetic knee adjusts resistance through fluid flow paths to support natural gait motion.

Asymmetric anchoring prevents rotation and preserves bone capital, reducing surgical complexity compared to complex cemented stems.

Loose spacers on a prosthetic cup allow sterilizing gas to penetrate behind the components, resolving incomplete sterilization caused by interference fits.

A cannulated reamer assembly shapes bone cavities using a guided tube structure.

A surgical impactor body uses a polymer envelope over a metal frame to reduce mass and manufacturing costs.

A modular acetabular device enables stable femur distraction during temporary implantation.

An intraoperative sensor system replaces subjective assessment with objective data collection, enabling precise ligament balancing and prosthetic alignment.

An expandable fusion device expands in width and height via ramps to maximize cortical bone contact while minimizing the surgical access window.

Integrated anchors merge with the implant body to prevent migration and backout, enabling faster stable fusion while eliminating prolonged recovery times.

An expandable spinal implant uses interlocking pins and grooves to secure upper and lower body positions after insertion.

A shoulder prosthesis epiphyseal part rotates 180 degrees to modify its upper face inclination angle.

A porous spacer device releases antibiotics to treat shoulder infections.

An orthopaedic implant with a porous structural member prevents therapeutic agent leakage through a nested solid core and sealing plug design.

A humerus head prosthesis uses an ellipsoidal articulating surface and conical recess for direct bone anchoring.

A universal joint shoulder implant uses a yoke-based connection to provide multi-point fixation and a natural center of rotation.

A modular glenoid prosthesis system uses a tapered stem and segmented base plate to couple interchangeable components for shoulder joint replacement.

A guide device attaches to an implanted femoral component to direct osteotomes along the stem.

Segmented cage bodies and universal end caps customize vertebral support while maintaining imaging visibility through composite material selection.

Pre-operative imaging guides patient-specific implant design to minimize bone removal and improve joint alignment.

A motion preserving spinal implant uses a polymeric elastomeric inner core to absorb shock and cushion physiological loads.

Segmented collar snap mechanism deforms elastically to engage shell undercuts on prosthetic shoulder joint inserts.

A prosthetic sleeve couples to a stem or uncouples to fill gaps in the broached channel.

A knee prosthesis features a rotatable spine extending through the tibial insert to enable natural joint motion.

Segmented dual walls filled with flowing thermoplastic material distribute mechanical stress and preserve patient bone stock during shoulder replacement.

Artificial disc uses a resilient core and mounting members for guided positioning between vertebrae.

Virtual pre-operative planning accounts for range of motion and soft tissue constraints to optimize implant selection, reducing dislocation risk.