Joint Implants TRIZ Cases

A femoral head press uses a perpendicular drive axis to align and seat prosthetic components with controlled mechanical force.

A surgical insertion handle uses a pivotable connection mechanism to adjust implant orientation during minimally invasive procedures.

Rotating a center rod drives sleds to expand side plates, restoring disc height and sagittal balance through minimally invasive delivery.

Slidable staples and pivotable frames correct sagittal deformities while restoring foraminal height in collapsed vertebrae.

Sagittal plane angulation of the extraosseous neck displaces the head anteriorly, reducing dislocation risk without causing leg lengthening or in-toeing gait.

Composite meniscus prosthesis uses a soft main body and stiff fixation parts to resolve the trade-off between mechanical strength and cartilage protection.

Spring-loaded pins lock a drill guide to an acetabular cup, resolving misalignment risks during hip prosthesis implantation.

Segmenting the pump from the clinician via a cable eliminates extension tube pressure drops and x-ray exposure.

A portable drill attachment converts rotational motion into controlled reciprocal impact forces for precise bone and joint procedures.

Segmented tibial tray and insert design reduces stress shielding while maintaining strong bone cement bonding through grit-blasted surfaces.

Compression and freeze-drying create binder-free bone implants that retain bioactive factors and promote osteoinduction while maintaining liquid stability.

Segmenting guidance into a separate needle allows the broach to follow a fixed trajectory, resolving deflection in hard bone while maintaining precision.

A spherical veterinary implant stabilizes the false joint using a countersunk axial passageway for secure fixation.

Segmented rails and a mounting frame enable rapid component interchange, reducing time spent securing instruments during revision knee surgery.

Rigid disposable molds shape joint spacers with precise geometry, eliminating machining and preventing allergic reactions from residual antibiotics.

A femoral sizing jig uses a medial posterior condyle locator to set external rotation angles.

Pivotally coupled endplates and translation members adjust anterior and posterior heights independently to restore sagittal balance and disc spacing.

Segmented mould system with fixing elements produces precise temporary prosthetic components, reducing surgical time and improving fit.

Noncoplanar planar surfaces on a femoral trochlea prosthesis improve fit accuracy while preserving healthy bone tissue during knee replacement.

A femoral component uses rails and recesses on bone-facing surfaces to distribute load and promote bone ingrowth.

Segmenting the mold into two rigid partial molds resolves the trade-off between ease of removal and manufacturing precision in knee spacer production.

A unicondylar tibial trial integrates keel slot formation and peg hole drilling into a single modular component.

Segmented screw components withstand off-axis torquing forces to prevent detachment during arthroplasty trial reduction procedures.

A tibial implant couples within a bone tunnel to transmit compression loads along the mechanical axis.

Torsional and bending breakaway springs provide compliant movement in three degrees of freedom, preventing bone trauma from shock loading during use.

Curved bearing surfaces in this disc prosthesis enable multidirectional spinal motion while preventing vertebral injury and ensuring uniform load distribution.