Joint Implants TRIZ Cases

Self-broaching, angled tibial pegs create press-fit fixation while minimizing bone preparation and resisting posterior lift-off.

A hinged control assembly moves rotatably coupled supports between collapsed and expanded positions to restore disc height in situ.

An implant inserted at collapsed height uses axial expansion and an adjustable lock to restore disc height across surgical approaches.

Independent actuators adjust implant height and lordosis during spinal fusion while anti-migration features improve stability.

A nested wedge-and-ramp assembly expands an intervertebral implant to stabilize the spinal segment and support bone fusion.

Flutes collect bone during insertion, helping stabilize deep-seated SI joints while reducing separate harvesting steps and tissue trauma.

Tomography data becomes voxel-level material maps, helping printed body part models retain mechanical variation and gradual tissue transitions.

Pre-positioned blocking members let interbody spacer fasteners insert normally while resisting withdrawal and supporting stable spinal fusion.

Modular shaft, grip, and locking-nut construction enables disassembly before sterilization while maintaining secure acetabular cup implantation.

Undercut channels and roughened distal surfaces help the tibial tray resist lipid and marrow infiltration while interlocking with bone cement.

A constant-force spring distractor assesses femorotibial gaps through flexion and helps locate the femoral isometric point for balanced placement.

Elastic and inelastic sidewall bands distribute vertebral pressure through deformation, helping prevent spinal cage subsidence.

Nested proximal and distal rings compress for small-incision insertion, then translate along ramps for controlled vertical expansion.

Peripheral mounting tabs and screws secure a pegless glenoid baseplate while reducing deep bone loading and preserving bone stock.

A curved core guides spinal flexion and translation while ceramic or carbon endplates reduce MRI artifacts and preserve motion.

X-shaped wings embed in the sacrum and ilium, compressing the joint through a posterior approach while limiting neurovascular risk.

Conventional socket printing can create voids and weak walls; a single-pass nozzle forms clear, dense walls for direct pylon attachment.

Dividing the sleeve wall into distinct geometric zones helps match bone anatomy, distribute joint loads, and limit surgical bone removal.

Domed endplates and complementary core surfaces accommodate smaller disc heights, improve vertebral contact, and reduce overstuffing and migration.

Pivoting links and ramped surfaces let an interbody implant expand inside the disc space without vertebral distraction.

An integrated solid support and porous structure gives spinal implants mechanical strength while enabling bone ingrowth for faster fusion.

An annular fixation ring and snap ring let surgeons exchange anatomic and reverse glenoid surfaces without removing stable fixation components.

A replaceable elastic core lets surgeons revise an intervertebral disc prosthesis in situ while leaving the implanted endplates intact.

Inward projections guide the ceramic knee implant and create formfit or pressfit fixation, limiting gaps, movement, and tilting during implantation.

Modular distractors, trialing tools, drivers, and alignment guides help place spinal implants accurately while limiting surgical invasiveness.

Medially biased ridges and segmented stem zones balance immediate fixation, rotational stability, and bone preservation in shoulder arthroplasty.

An interference-fit mounting stud adjusts humeral head inclination and version, reducing fixed-stem inventory and simplifying arthroplasty assembly.

Nested cages and an adjustment screw let the interbody pass through a small access port, then expand in situ for spinal support and fusion.

Porous structures, roughened surfaces, and permeable fills help DMLS titanium bone screws promote bone ingrowth and integration.

A rotatable locking member uses a collet and anti-backout features to keep bone screws engaged during spinal fusion.

Porous ALIF cages combine bone screws with set-screw or pivoting retention to prevent back-out and improve initial fusion stability.

A collapsed curved implant expands in situ through a pivoting deployment tool, reducing tissue disruption during interbody fusion.

An intermediary guide directs impaction along the bore axis, helping secure modular prosthesis joints without excessive force on bone or components.

Embedded radiopaque indicia make implant size and depth visible on intraoperative X-rays, reducing reliance on external guides and distortion.

A two-component implant separates a standard support from a customized drug layer for uniform, prolonged treatment of bone or joint infections.

Conventional implants expand end regions together; threaded screws move spinal implant portions along channels for separate angular adjustment.

Combining disc sizing and vertebral bone cutting in one instrument streamlines placement and improves positioning precision.

A mesh tip and lock tube crimp the knit implant for secure filling, then unthread to simplify surgical withdrawal.

A rotatable locking element secures screws inside a 3D-printed cervical implant, addressing shallow trajectories and long-term screw backout.

A total spinal joint implant uses ball-and-socket motion moderators to preserve mobility while restoring spinal stability and alignment.

Repeated force can complicate spine cage positioning; a central transfer path channels mechanical energy directly to the cage.

Cervical facet plugs can migrate and allow unwanted motion; tapered implant surfaces and guided seating support stable, minimally invasive fusion.

After reverse total shoulder arthroplasty, variable anatomy complicates acromial fracture repair; contoured screw-fixed arms restore shoulder stability.

Controlled shaft rotation moves the end plate, while ratchet locking resists back-driving and maintains implant expansion.

Stackable femoral and tibial spacers adjust implant spacing for varied knee anatomies while reducing inventory and manufacturing costs.

An anteroposterior pivot lets a reference plane bear against the femur, simplifying precise checks of distal resection cutting-block orientation.

Separate sizing tools and cutting blocks lengthen knee replacement procedures; an integrated block combines a probe, reference foot, and saw guide for femur resection.

See how a modular shoulder prosthesis baseplate uses a removable collet and optional bone screw to preserve glenosphere compatibility.

One electric motor drives a cleaning brush or grater and mill head, reducing manual contact, contamination risk, and duplicate power units.