Joint Implants TRIZ Cases

Flanges on the reamer guide engage tendons to stabilize the device, enabling complete resurfacing of the patella in one operation.

An acetabular cup inserter uses an actuating mechanism to secure and position the implant during surgical procedures.

A prosthetic acetabular cup uses a rotatable bearing element with dual part-spherical surfaces to secure the femoral head within the housing.

Lever mechanism separates cemented stems from bone interfaces, reducing tissue trauma and surgery time.

An asymmetric V-shaped femoral neck contour resolves the trade-off between implant stability and restricted movement range by mimicking natural anatomy.

A sliding hammer delivers controlled forces to align prostheses using ultrasonic vibration.

An implant featuring anterior-posterior curvature defined by two tangential curves matches the femoral condyle geometry.

An artificial knee post uses an inclined upper surface to guide the thighbone coupling member during rollback motion.

A spherical ball and stem mechanism corrects the implant axis alignment to prevent interference with bony prominences during lateral insertion.

A PEEK knee implant uses a rib structure to enhance bone anchoring, resolving wear and stability trade-offs.

Angular trunnion interfaces and variable stiffness profiles reduce fretting wear at modular hip prosthesis junctions.

Angled fins compact cancellous bone while resilient lobes provide self-pressurization, reducing cement usage and external force requirements.

Segmented adapters with distinct mating features prevent implement decoupling during orthopedic cavity formation.

An insertion device uses an adjustment screw to vary spacing between engagement arms for precise expandable cage placement.

Hollow body member features apertures and porous ceramic surfaces that create osteoconductive paths through the implant structure.

Segmented prosthetic arms use harmonic drives and compliance sensors to resolve limited degrees of freedom in shoulder-to-hand replacements.

Barium sulphate filler in polyetheretherketone enables clear X-ray visualization without increasing wear on the softer polyethylene counterface.

Replacing metal with radiolucent PEEK eliminates imaging interference while maintaining structural strength for durable spinal fusion alternatives.

Independent slider mechanisms enable intraoperative linear and angular expansion of the implant gap, resolving sizing constraints.

Merged cannula and stylet components streamline dorsal sacroiliac joint implantation by reducing instrument count and procedural steps.

Automatic locking prevents movement near the spinal cord while threaded expansion increases graft capacity.

An extraction device uses a hook to engage the implant neck and offset striking surfaces to transmit kinetic energy for removal.

A pre-cut trial mimics the genuine femur implant to verify joint behavior before final mounting.

Segmented anti-expulsion device prevents implant expulsion from degenerated annulus fissures through elastic expansion and mechanical interlocking.

A sliding wedge mechanism expands the spinal fusion implant height intraoperatively, accommodating bone graft material while maintaining natural lordosis.

Asymmetric glenoid component offsets articulation center to distribute eccentric loads and prevent premature loosening.

Synthetic bone graft substitute eliminates donor site morbidity while composite fixation plates secure the prosthesis to deficient scapular anatomy.

A surgical instrument adjusts spinal implants along two axes to match patient anatomy.

Offsetting the head in frontal and parasagittal planes accommodates tibial anatomy while reducing soft tissue irritation.

A space truss intramedullary implant distributes physiological loads through a porous lattice structure, preventing stress shielding and bone resorption.

Radio-opaque polymer cores provide x-ray visibility and shock absorption, reducing friction and wear compared to mechanical ball-and-socket joints.

Axial compression of a resilient bush in a prosthetic adaptor expands the component radially to prevent rotation without breaking parts.

An expandable spinal fusion device uses independent translation members to adjust anterior and posterior sides separately.

Screw-driven carriage slides against ramped endplates to adjust spacer height, resolving adaptability versus complexity trade-offs.

An adjustable steel plate uses a telescopic fixing piece and size-adjusting strap to provide stable thoracic support without restricting development.

Curved impactor navigates around the greater trochanter to seat an angled hip implant without impingement.

A bone implant augment uses a conical undercut and rough surface to improve cement fixation reliability while simplifying manufacturing complexity.

An implantable prosthetic device combines a fibrous pad for tissue ingrowth with a textile anchor to prevent dislodgment in damaged cartilage repair.

A variable angle locking system secures a humeral component to a stem using helical threads and a spring washer for angular adjustment.

Independent proximal and distal adjustment assemblies expand the spinal implant to match vertebral endplate geometry, preventing dislocation.

A stem vibrator generates mechanical oscillations to assist prosthetic stem insertion during hip replacement surgery.

A radial head prosthesis joins its stem and head via transverse sliding followed by rotation to generate a frictional lock.

Trial femoral head members feature patient-specific markings to guide optimal positioning and orientation of prosthetic components during surgery.

Polymeric inner core absorbs shock to prevent metal wear while maintaining spinal motion range.

An integral vacuum generating means creates suction between a moveable barrier and the implant, eliminating complex external connections.

A biocompatible protective cap absorbs impaction forces from surgical tools to prevent burnishing or notching of the implant surface.

An enclosed pocket in a porous tissue scaffold retains viable cells, eliminating time-consuming cell culture steps.

A unibody expandable interbody implant uses a rotating set screw to drive a plug against an inclined ramp for vertical expansion.

Hinged shells and wedging components expand the implant after insertion, accommodating varying disc heights without excessive neural retraction.