Joint Implants TRIZ Cases

Segmenting the femoral component resolves stability issues in severe osteonecrosis cases by optimizing volume and fixation independently.

Sloped drainage surfaces guide liquid from orthopaedic instrument cavities to drain holes, reducing sterilization time and maintaining sterility.

A mandibular implant uses a collar channel to create a ferrule effect that distributes mechanical loads across the stem and head portions.

A knee prosthesis crossbar resists anterior translation in extension while allowing rotation in flexion, replicating ACL function.

A low profile plate uses a set screw to prevent bone screw back-out during spinal fusion procedures.

Composite zoning in a tensioned meniscus prosthetic distributes load pressure, resolving inadequate pain relief and arthritis management.

A customized artificial temporomandibular joint unit uses interlocking plates to enable patient-specific fitting and component replacement.

Segmented monolithic implant expands via plastic deformation to secure fixation without drilling, preserving cortical bone integrity.

Patient-specific finite element simulation adjusts the prosthesis geometry to restore physiological motion and reduce adjacent segment disease risk.

Pneumatic impact devices replace manual hammers to prevent bone fractures during hip replacement.

A coiled spinal implant strip accommodates vertebral motion through elastic deformation and shape memory alloys.

Staggered bone fixation spikes with recessed outer surfaces anchor intervertebral implants, resolving stability and mobility trade-offs.

A hybrid glenoid prosthesis combines peg and keel components to secure superior attachment and rotational articulation.

Applying mechanical forces during polymer crosslinking to align engineered orthopedic soft tissue fibers.

Flat spring safety element blocks radial movement by engaging expansion ring gearing, preventing compression while simplifying surgical handling.

An active dorsiflexion mechanism in a prosthetic ankle joint adjusts foot position to prevent toe catching and reduce stumbling risk.

Static devices limit microsurgery access. This expandable assembly inserts in a low-profile state then expands to bridge vertebral gaps, restoring disc height.

Sagittal and transverse cuts preserve spinous process strength, preventing ACL detachment during compartment resection.

Universal tibial inserts match multiple femoral component sizes, reducing inventory complexity while maintaining joint conformity.

Segmented porosity resolves the contradiction between load bearing strength and integration speed while enabling controlled agent release.

Segmenting backup inventory by statistical deviation data reduces unnecessary implant weight while maintaining reliable coverage for arthroplasty procedures.

A surgical extractor uses a threaded locking mechanism to secure clamping force on femoral components.

A single expandable trial implant adjusts its footprint via pivotable arms, replacing multiple devices and reducing surgical trauma during lumbar sizing.

Removable fixation structure stabilizes artificial disc joints during initial implantation to support biological integration.

Asymmetrical femoral condyles enable anterior-posterior translation and longitudinal rotation, accommodating up to 3° axial misplacement errors.

Series-elastic actuator with neuromuscular control replaces passive designs to reduce metabolic energy consumption and normalize walking speed.

A humeral liner with a split curvature bearing surface reduces implant inventory by accommodating multiple glenosphere sizes.

An adjustable provisional component uses a robotic control mechanism to modify leg length, lateral offset, and version angle during surgery.

A surgical extractor tool uses a rotating blade to separate an acetabular cup from bone tissue.

An endoprosthesis component uses a segmented coating system to deliver immediate antimicrobial protection while maintaining mechanical strength.

Trolleys travel along guide walls to adjust spacing and inclination, preventing instability during expansion.

Custom-molded sleeve and skin pack lid secure implants to eliminate foam waste and prevent sterility compromise during transport.

An inverse conical guide pin on a hip socket insert provides precise alignment during surgical installation.

Anatomical guide templates predefine bone resection paths to resolve the trade-off between surgical flexibility and trochlear groove restoration precision.

Standardized fixation posts allow switching between dissimilar perimeter shapes, reducing surgical time and preventing malpositioning.

A jig shapes a spacer blank to match an in vivo gap measurement, resolving fit issues from patient anatomy variations.

Threaded spindle adjusts intervertebral implant distance via screw mechanism, preventing axial displacement without extra locks.

A modular vertebral spacer uses a camming mechanism to couple end members with an intermediate segment for secure fixation.

An articulating support cage uses a jackscrew mechanism to expand from a collapsed state for minimally invasive implantation.

Rotatable spine plates accommodate vertebral movement while a pin mechanism secures the interbody spacer to promote bone fusion.

An asymmetrical spinal implant combines a rigid titanium shell with a resilient polymer nucleus to reduce subsidence and pain while enabling biological fusion.

Coupled gear system expands the implant to distribute load across vertebral bodies, preventing sinking into adjacent bone tissue.

A cut guide positioning assembly uses a boom and arm to align the instrument relative to the humeral head along two axes.

A total joint prosthesis uses a magnetic rod and gear system to modulate implant length through external actuation.

A tibial implant method sizes metaphyseal recesses to exceed distal fixation feature dimensions, creating a structural gap between the feature and recess surfaces.

An asymmetric tibial baseplate periphery matches resected tibia anatomy to ensure proper rotational orientation and spatial alignment during implantation.

A surgical instrument uses a threaded spindle to drive a rod for controlled prosthetic disassembly.

Arcuate slots and mechanical stops in a transforaminal disc limit facet joint wear while maintaining controlled movement.