Internal Osteosythesis TRIZ Cases

Segmented connecting rod with round and head portions secures to bone screws via cross connector assembly, resolving strength versus profile trade-offs.

A repositionable clamping assembly secures a stabilizing rod to an occipital plate via frictional locking surfaces.

Threaded conical end cap self-aligns with intramedullary nail to eliminate sharp edges causing pain and prevent bone growth.

Asymmetric threaded hubs allow bone fixation tangs to adapt to intramedullary canal shapes, preventing over-extension trauma and under-extension weakness.

Cut patterns in the flexible spanning part enable elastic deformation, restoring normal range of motion while maintaining structural stability.

A tissue retractor assembly anchors to anatomical landmarks and uses a splay unit to adjust blade angles.

An intervertebral implant uses variable truss density and oblong struts to direct bone graft material flow.

A spinal rod persuader device limits peak insertion force via an automatic mechanical threshold to prevent implant damage.

A surgical instrument uses threaded compression racks and gear-driven lordosis mechanisms to adjust vertebral alignment.

A pedicle screw head with a U-shaped cavity enables self-rotation and pendulum motion of the screw body.

Uniformly dispersed bioceramics in a biodegradable polymer matrix create continuous pores that enhance bone conduction and mechanical strength.

Adjustable elongated legs and transverse members accommodate anatomical variations while securely contacting lateral spinous process surfaces.

Elastic chuck diameter adapts to bone screw head, preventing unintended twisting during spinal fixation.

A shaped dilator creates a working channel to percutaneously deliver an elongated member, reducing tissue trauma during spinal stabilization.

A self-drilling sacroiliac screw displaces bone tissue radially inward to capture autograft material within its interior chamber.

A triangular osteosynthesis plate features an integral upper extension containing a second screw hole to secure the fifth lumbar vertebra.

A bone fusion device uses a bridge and porous surface to join vertebrae without screws.

A wedge-shaped body with fixation members re-aligns bone regions during osteotomy procedures.

Rotatable struts in a spinal implant adjust inner volume and surface contact area to optimize bone graft containment and fusion efficacy.

An aiming arm with lateral guides bridges the gap between a bent nail's locking holes and the drilling path to ensure accurate fixation.

An umbilical cord vessel balloon stabilizes fractured vertebrae while avoiding bone cement leakage and adjacent level fractures.

Rotating an abutment between orientations engages a lock to prevent loosening under impaction forces.

A low-profile uniplanar bone screw uses a movable rocker to adjust rod positioning within a single plane.

A cannulated, porous fixation device expands between facet surfaces to promote bone ingrowth and fusion while reducing soft tissue disruption.

An expandable interspinous spacer delivers dynamic stabilization while preserving natural spinal motion and minimizing tissue disruption during implantation.

Segmented main implant and nested complementary plugs allow targeted injection into bone cavities, preventing nerve damage from imprecise delivery.

Inverted V-shaped sacral prosthesis distributes stress via a connecting seat to prevent screw-rod fatigue break and lumbar subsidence.

Angled correction channels guide a second wire along an initial femoral neck placement to fix inaccurate guide wire positioning during fracture fixation.

Nested instrument design with a torque-limiting clutch enables precise spinal rod seating through small incisions without expanding tissue pathways.

A spinal joint distraction system uses an implant distractor to expand facet joints and increase foraminal height.

Angled trochanteric hooks manage muscle traction forces to prevent fracture site opening and improve bone consolidation.

A multi-axis spinal screw connection locks angled fasteners into a plate via a threaded aperture and central retention zone.

Rotating locking mechanism anchors spinous processes, reducing surgical invasiveness while ensuring reliable bone immobilization.

Implants displace targeted connective tissues to realign spinal force vectors.

Expandable inter-spinous spacer uses a self-sealing port to inflate internal chambers for precise vertebral height control.

Nested bar design eliminates set screws and lateral tissue clearance while maintaining rigid spinal fixation.

Segmented containment jackets prevent cement leakage and restore vertebral height in fracture treatments.

A multi-axial bone fixation system uses a deforming compression element to lock pedicle screws within a tapered chamber.

Segmented coupling device resolves alignment precision trade-offs by allowing independent screw angulation and secure rod locking.

Elastic shape memory and asymmetric barbs enable stable fixation, resolving the trade-off between easy insertion and resistance to rotation or pullout.

Intersecting extension geometries prevent instrument clashing during percutaneous rod placement in curved spines.

An implantable tension member absorbs mechanical energy during joint flexion to reduce load transfer between anatomical members.

System detects pre-planned position deviation against reference data to prevent anatomical deformations during implant connection.

Expandable device restores vertebral height and maintains structural support during bone cement injection.

A screw-clamp apparatus grips thoracic vertebrae to stabilize the spine without pedicle screws.

A tapered milling guide mounted on a trial implant directs a cutting tool to form precise intervertebral keel slots.

Segmenting the coupler into a rotatable top and slotted bottom simplifies broken rod repair while minimizing tissue damage.

A flexible cable pivots within an intramedullary rod to stabilize bone fragments.