Joint Implants TRIZ Cases
- Interchangeable Knee Prosthesis Components
Interchangeable tibial trays and bearings in a fixed-bearing knee prosthesis resolve anatomical compatibility limits while maintaining stability.
- Interbody Spacer Screw Receiver Anti-Backout Mechanism
A spinal interbody spacer uses a threaded screw receiver to secure bone screws against loosening forces.
- Dome Patella Components With Decoupled Thickness And Diameter
Dome patella components decouple thickness from outer diameter to resolve geometric dependencies that limit surgical gap balancing.
- Modular Knee Prosthesis with Common-Geometry Metaphyseal Sleeves
A modular knee prosthesis uses metaphyseal sleeves sharing common geometry to optimize joint line positioning without additional bone preparation.
- Stabilized Drill Guide With Movable Shaft Joint
A drill guide features a movable shaft joint that stabilizes the working portion against bone surfaces.
- Spinal Cage Hammer Guide Cavity for Precise Force Application
A spinal cage hammer uses a guide cavity to transfer controlled linear force to the holder.
- Vertebral Retraction System with Lateral Protector
A vertebral retraction system uses movable frame arms to distract adjacent bone structures.
- Patient-Specific Tibial Guide with Variable Resection Channel
Variable width resection channels in patient-specific tibial guides resolve anatomical variability by ensuring precise vertical bone resections.
- Acetabular Cup Implantation Assembly with Separable Gripper
Segmented gripping head and movable pusher simplify sterilization and reduce manufacturing costs while maintaining reliable cup retention.
- Reverse Shoulder Prosthesis Deep Articulation Stability
A reverse shoulder prosthesis uses a deep concave humeral component and convex scapular head to create stable joint anchorage.
- Surgical Guide Section for Accurate Hip Center Alignment
Guide section translates pre-measured iliac spine data to indicate femoral head center, resolving visibility constraints during knee surgery.
- Modular Trial Heads for Hip Prostheses
Segmented trial heads mate with stems to enable customizable fitting across varying patient anatomies.
- Expansible Intersomatic Cage with Orthogonal Pivoting Arms
Pivoting arms expand orthogonally to distribute contact on cortical bone, reducing invasiveness and preventing implant sinking.
- Hip Implant Femoral Head Grooves Reduce Wear
Grooved femoral head traps debris from UHMWPE liner, reducing adhesive wear and extending implant longevity.
- Reverse Total Hip Prosthesis Design for Dislocation Prevention
Inverting the femoral cup and acetabular ball reduces dislocation risk while preserving acetabular bone stock during implantation.
- Orthopaedic Implant Bonded Porous Material Fixation
Bonding material fills pores and surface features to prevent component separation and reorientation, ensuring stable long-term implant fixation.
- Modular Hinge Knee Prosthesis Offset Flexion Centers
A modular knee prosthesis uses offset flexion centers and a cam-post coupling to replicate natural patellofemoral kinematics.
- Cranial Implant Assembly with Magnetic Locking for Swelling Adaptation
Articulated spanning member transitions from flexible to rigid state using magnetic locking mechanism to secure cranial implant assembly.
- Knee Prosthesis Condyle Curvature Control
Variable sagittal radii on the femoral condyle control anterior translation to maintain joint stability.
- Spring-Loaded Ratchet Locking Mechanism for Surgical Alignment Stability
Replacing friction-based thumbscrews, a spring-loaded ratchet locking mechanism prevents slippage during bone resection operations.