Fasteners TRIZ Cases

An orthopedic plate with an oblique compression screw applies compound force to prevent plastic deformation and secondary overload during early weight-bearing.

Trephine guided by K-wire severs bone tissue around screw shank, preventing damage to surrounding bone structure during removal.

A surgical jig uses a rail hinge and distraction body to adjust bone alignment in multiple planes.

Oblique predrilled holes in a fixation body align pins across radius fractures, reducing tendon irritation and stiffness risks.

A compressible screw head expands to lock into a plate aperture, simplifying surgical engagement steps.

Modular accessory elements attach via locking retainers to standard bone plates, eliminating specialized plate designs.

A hybrid cannulated orthopedic screw uses an interrupted thread configuration between a metal inner core and polymer outer body to optimize handling.

Segmented mandibular bone plates attach to multiple jaw surfaces to reduce soft tissue irritation while maintaining structural fixation strength.

Modified orthopedic screw threads with left-handed chip dispersing flutes curl bone debris away from cutting edges to reduce friction.

A bone screw with a double-conical thread head reduces insertion torque while maintaining high locking stability at variable angles.

Slanted aperture guides bone screw to compress adjacent bones, resolving trade-off between insertion ease and optimal compression angle.

Resilient pawls on spinal screws engage plate channels to prevent migration, eliminating false-locking risks from traditional threaded connections.

Segmented iliopectineal and pubic plates match medial anatomy to constrain acetabular fragments, reducing surgical complications from unstable fixation.

A bone plate with a transfixation screw hole directs a screw across a joint to compress bones, resolving lateral support failures that cause nonunion.

Alignment grooves on the screw head prevent thread burring during variable angle insertion, while carburized surfaces increase hardness to stop breakage.

A beveled surgical guide channels K-wires through preset angles to align metatarsal bones during minimally invasive procedures.

A cross pin fixator uses collapsible holders in spherical cavities to secure bone pins.

Nested bushings enable adaptive screw angulation to maintain anchoring strength on non-flat bone surfaces.

A bone plate system uses an oxygen diffusion hardened screw head to provide high angle stability and reliable locking.

A composite bone fixation device uses a degradable sleeve to allow progressive interfragmentary motion.

Segmented fixation devices with intermediary cable locks resolve the trade-off between precise bone alignment and structural complexity.

Elongated screw holes guide K-wires while forceps compress segments to reduce gaps during imaging.

Textured blade surfaces prevent tissue migration while a universal key adjusts the blade toe for precise instrument access.

Nested inner and outer screw members eliminate guide wires, reducing puncture risks while forming a solid implant.

Preassembled bone plate uses compressing screws to maintain alignment and prevent joint gaps during fusion.

Tongue and groove securing mechanisms enable adjustable hinge plate assemblies to conform to patient anatomy without pre-bending.

A screw-based retractor uses articulating blades with discrete lockable positions to enable precise tissue retraction during spinal procedures.

Internal and external threads on a locking cap prevent wire backout, maintaining bone fragment stability.

An enclosed magnetic core bone screw reduces surgical complexity and rejection risk by integrating the magnet inside the screw structure.

Segmented seats in the plate enable bone anchors to pivot up to 40 degrees without increasing profile thickness.

Inverted flexible plate supports sternum via ribs, reducing invasiveness and bar displacement risks.

A fixation device with a distal blind hole securely receives a k-wire for stable bone anchoring.

Segmented tapered apertures allow variable screw orientation while maintaining fixation stability, eliminating the need for bone compression.

Recesses and transverse grooves on a bone plate reduce periosteal blood supply damage while maintaining mechanical stability through localized contact zones.

Segmenting the retractor into nested spiral blades distributes pressure evenly, preventing soft tissue injury during lateral spine surgery.

Angled cutting flutes on cannulated bone screws slice bone material, reducing insertion torque and minimizing thermal necrosis during self-drilling.

A tibia aiming jig uses a guide arm to direct support screws along an anterior-posterior trajectory.

Helical cutting grooves at the bone screw tip reduce axial force and torque, minimizing stress on surrounding tissue.

A polyaxial bone plate positioning device uses integrated longitudinal and transverse alignment guides to secure precise screw placement during surgery.

Active engagement mechanism prevents unintentional disengagement during insertion, ensuring reliable retention and reducing bone fracturing.

An implant with a central bore and intersecting slot distributes loads across compromised bone structures without removing existing screws.

Asymmetric facets on the screw thread reduce insertion torque by up to 50% while preventing bone splitting during orthopedic procedures.

A twisted joining portion connects intersecting bone plate segments to distribute vertical loads across multiple planes.

Extended threading on the proximal shaft provides axial force to resolve removal difficulty and tissue damage risks.

Truncated spherical contours allow the nut to incline for spatial orientation while maintaining rotational locking precision.

A one-piece variable angle locking washer uses radial slots to provide spring-like functionality for secure angular fixation.

Ultrafast laser processing forms microstructures and titanium dioxide films on titanium implants to accelerate bone integration.

An internal extendable tang system in a bone screw deploys anchors post-insertion to prevent rotation and loosening.