Internal Osteosythesis TRIZ Cases

Rod receivers translate and rotate within occipital plate slots, enabling customizable cervical spine stabilization despite small vertebrae.

A quadrilateral linkage mechanism maintains parallel foot alignment during orthopedic distraction and compression procedures.

Segmented yoke design allows anchor pivoting to extreme angles without compromising holding strength or increasing separation risk.

A multi-planar taper lock screw uses a slidable outer housing to secure a pivotable screw head and spinal rod.

A bone clamp uses a sliding block and screw to drive lever arms, enabling rapid attachment without bone damage.

Hooked thread profiles with undercuts resist axial and lateral forces, reducing micromotion and improving spinal construct stability.

Fixation post integrates patient reference array onto pedicle screw, eliminating separate incisions and preventing array movement during surgery.

Modular rod reducer assemblies with frangible tabs enable minimally invasive spinal surgery while maintaining precise screw and rod construct alignment.

Curved awl and driver tools navigate smaller incisions while maintaining alignment with angled fastener channels in intervertebral spacers.

Segmented fixation guides orient intramedullary nails to stabilize bones while avoiding soft tissue irritation from external plates.

Dynamic flexible rods bend under load to distribute forces across anterior vertebrae, resolving stability versus natural motion trade-offs.

A rod insertion instrument uses a lockable hinge joint to pivot the tube section relative to the gripping head.

A shape-sensing optical fiber provides precise positional data to align surgical guide apertures with target features.

Color-coded graphical user interface provides real-time feedback to reduce surgical errors while managing system complexity.

Segmented breaking elements and a spring-loaded retention bar capture up to 50 broken tabs in one device, eliminating loose debris retrieval.

Variable cross-section fixing rods prevent rotation in screw slots, enabling precise spondylolisthesis reduction without spinal cord injury risk.

Angled superior and inferior portions with a curved mid-portion position thru-bores at anterior vertebral rims, minimizing vessel retraction.

Axially extending fingers align and secure spinal implants to maximize surface contact area, preventing stress concentration on the device.

Spring-loaded pawl engages angled abutting structures to block medial migration while permitting lateral bone healing motion.

An intramedullary nail inlay locks within the cannulation using engagement members to secure screw fixation.

Unified positioning instrument merges separate drilling steps to reduce operating time while ensuring precise bone graft alignment.

Drill guide and K-wires maintain precise bone orientation during drilling, resolving manual holding difficulties while ensuring accurate anatomical alignment.

Sliding and pivoting rod receivers accommodate various anatomical orientations without bending rods, reducing material fatigue.

A mechanical joint balancer translates lateral-medial displacement into gauge deflection for surgical assessment.

Adjustable bone plate holder uses connection tips and stabilizing members to securely grip small laminoplasty plates for precise surgical positioning.

Expandable porous implant restores vertebral height and stabilizes compression fractures through controlled bone filler permeation.

Recessed core surfaces in a polymer spinal rod increase the bonding area for fiber layers, ensuring rigidity without magnetic interference during MRI imaging.

Segmented extension implant bridges additional disks via a deformable clamp, avoiding tissue damage from disrupting existing implants.

Pressure member applies precise preload force to bone anchoring element head, resolving complexity trade-offs while enabling enlarged pivot angulation.

Replacing threaded fasteners, the cam mechanism provides tactile and audible feedback during incremental adjustments to prevent improper use.

Merged derotation tube and reduction blade enable en bloc vertebral alignment while eliminating multiple separate instruments.

A laparoscope retaining device uses a single drive unit to rotate the main body and lever in opposite directions for direct tilt control.

A bone anchoring device uses a pin to secure discrete retainer members within the receiver cavity.

A bottom-loading anchor assembly uses a compression member to radially expand a retaining member for secure anchoring.

Visual indicia on a rotatable inner sleeve indicate locking status, resolving accidental disengagement risks during spinal surgery.

A spinal rod inserter holds a longitudinal member vertically for insertion through small incisions.

Telescoping intramedullary implant segments resolve the trade-off between structural simplicity and versatile multi-angle fastener engagement.

A tapered wedge interbody implant with angled bone fixation elements secures spinal fusion through minimally invasive insertion.

Lateral rod extensions eliminate multi-plane bending, reducing implant failure risk and improving surgical alignment.

A swivel joint rotates the clamp to compensate for bone fixture angle changes, eliminating binding forces during osteodistraction.

Segmented connector wings adjust independently to position spinal rods, resolving complex vertebral alignment.

A surgical reducer instrument delivers elongated members through small incisions to secure spinal stabilization collars.

Segmented bone screw head with guide aperture allows surgeon to manipulate connecting rod orientation without sacrificing retention strength.

Implant sensors monitor inflation, wear, and bone growth via resonant circuits to resolve the trade-off between measurement precision and device complexity.

A femoral prosthesis uses an additively manufactured porous casing to produce customized geometries for patient-specific anatomical fit.

Continuous oblong holes with partial threads and smooth walls allow sliding insertion and angle-stable fixation, resolving placement precision trade-offs.

Segmenting radial contours into discrete facets reduces machining costs and material waste while maintaining precise fit.

A bone anchor retractor uses a flexible wire to secure anchors while modular blades distract the disc space.

Segmented retractor blades adjust independently to minimize tissue stress while a ridged slider maintains precise vertebral alignment during distraction.

An interbody spacer guides a sliding plate along a radiolucent insertion member, enabling accurate alignment without multiple X-rays.