Joint Implants TRIZ Cases

Conformal bone-contacting surfaces on a patient-specific jig guide precise saw blade resection, eliminating alignment errors from surgeon judgment.

A surgical delivery device uses a bent tube and plunger to dispense graft material through a distal end.

Segmented center and additional units adjust bone reinforcement, preventing excessive bone removal during revision surgeries.

A universal cutting jig shapes the distal femur to accept multiple total knee arthroplasty implant designs.

Lever clamping device secures spinal implants to operating instruments for minimally invasive procedures.

A segmented end cap and connector system attaches to a biocompatible cage to distract the spinal column, preventing extrusion against the spinal cord.

Lateral wall ports enable direct bone graft injection into spinal implants, bypassing cumbersome top-access packing steps.

A four-component hip prosthetic uses partial cylindrical surfaces to enable uni-axial rotation across three axes.

Screw and gearing assembly translates rotation into axial displacement, enabling infinite height adjustment to prevent vertebral subsidence.

A collapsible distal abutment member pivots to reduce its axial profile during extraction.

A modular spinal implant system uses insertion tool handles and endplates to apply distraction forces for central section placement.

Angled tibial bearing spine promotes outward axial rotation during knee flexion, resolving the trade-off between posterior stability and rotational capability.

A flexible wire saw cuts through anchors of an implanted glenoid component, preserving bone stock during revision surgery.

An acetabular prosthesis cavity uses a cylindrical surface extending deeper inferiorly and a semi-spherical surface to constrain the femoral head.

A suspension liner with a volume control pad distends a seal element to urge it outwardly against the residual limb.

A surgical modeling system creates 3D prosthesis representations from 2D anatomical images to generate precise procedure-based information.

Compliant bag filled with particles restores anatomical height while providing adjustable resistance to rotation and translation.

Controlled condylar curvature delays paradoxical anterior translation, enhancing joint stability and reducing wear in knee prostheses.

An S-shaped posterior cam surface on a single tibial bearing accommodates distinct femoral geometries, reducing surgical complexity while maintaining mobility.

A tibial trial attachment instrument assembly integrates a template, keel punch guide, and handle into one unit.

Threaded mechanism transforms rotary motion into axial force for secure locking while torque limiter prevents overtightening.

A pivoting shim adjusts tibial bearing trial orientation to resolve sizing precision versus adaptability trade-offs.

Axle defines fixed rotation axis between femoral and bearing components, preventing dislocation in quadruped knee replacements.

A biodegradable intervertebral disc implant restores spinal height through directional growth matrix permeation.

A surgical guiding tool with a stirrup element aligns drilling axes along the humeral geometric bend.

Segmented hinge structure maintains joint space and stability during antibiotic treatment, preventing tissue shortening.

A patient-matched cutting block uses segmented outriggers to guide precise tibial resections.

Segmented spinal interbody devices expand via axial compression to resolve the contradiction between minimally invasive insertion and final structural support.

Asymmetric screw openings and supporting ledge distribute loads to ilium, resolving fixation stability versus stress uniformity contradictions.

Elastic prosthetic components interlock with bone via protrusions, eliminating stress shielding and metal erosion from stiff implants.

Universal femoral trial component accepts interchangeable attachments to prepare and trial diverse femoral implant types, simplifying revision surgeries.

Surface ribs on a hip socket insert reduce deformation resistance, enabling secure clamping without additional fasteners.

A helical screw drives an expansion ramp to adjust tibial trial thickness, reducing instrument count.

Radial slits enable liner compression for secure positioning, resolving trade-offs between ease of operation and reliable retention during surgical trials.

Grooved compression staple aligns with guide wires to prevent debris interference during bone fixation.

A free-floating glenohumeral component with convex and concave articular surfaces articulates with the humerus and glenoid.

A hip socket inlay instrument uses an elastic molded part and tension element to create a secure vacuum seal for precise intraoperative handling.

Segmented telescoping components stabilize the disc space while preserving physiological motion, avoiding fusion-related stiffness.

Segmented anchors linked by a dynamic connector resolve monolithic design limits, enabling lateral expansion for customized pelvic anatomy.

A composite interbody implant uses a radiographically translucent main module to stabilize bony segments while enabling clear radiation-based visualization.