Internal Osteosythesis TRIZ Cases

Deformable slits enable proximal bone fixation with controlled micromotion, reducing implant fatigue failure and supporting early weight-bearing.

Intrinsic extenders and breakoff sections enable rod reduction without external instruments, cutting spinal fixation cost and complexity.

Oblique compression and offset fixation help align metatarsal and tarsal bones while simplifying hallux valgus correction surgery.

A paired plate and screw layout enables same-stage endonasal occipitocervical fusion, avoiding a separate posterior approach and its tissue trauma.

Movable rod segments and hinge joints correct scoliosis while preserving spinal bending and rotational motion with less stiffness.

A flexible two-tube mold forms intramedullary nail spacers that match nail curvature, improve canal fit, and deliver local antibiotics.

A rotatable fixing element temporarily clamps the bone anchor head without loading the pressure piece, improving spinal correction handling.

Angled load flanks and splay control ramps let bone anchor closures install with lower torque while limiting receiver arm splay and stress.

A fulcrum-assisted expandable spinal implant restores lordosis while maintaining disc and neural foramen height to avoid nerve compression.

A semispherical rod end and central clutch lock surgical devices in place, preventing disengagement in confined anatomy and easing follow-on maneuvers.

Placed between split sternal sections, a porous implant scaffold improves compression, limits bleeding, and promotes faster bone fusion.

Patient-specific spacers and an adjustable guide correct ankle misalignment and deformity during revision surgery for more accurate implant placement.

Anchored guides, pilot-hole drilling, and countersinking enable secure facet-joint bone graft implantation with less invasive spinal fusion.

Thermally actuated pumps and rolling bladders use feedback control to adjust vertebrae spacing precisely while limiting catastrophic failure risk.

A revolved shank and plate structure lets surgeons adjust metatarsal head rotation and lateral position with less invasive hallux valgus correction.

Segmented wings and a clamp maintain vertebral spacing with adjustable distraction, enabling less invasive spinal stabilization.

A threaded coupler, nut, and driver clamp a spinal rod to align vertebrae while preserving motion and reducing the need for fusion.

A one-piece preassembled coupling in an intramedullary nail prevents lag screw jamming and medial deviation while improving fixation stability.

A segmented transformative section bends to match the intramedullary canal during insertion, then locks rigidly for stable, less invasive fracture fixation.

Receiver rotation stops and a creep-resistant compression insert keep a polyaxial bone anchor locked despite polymer rod creep.

Integrated load sensors and electrodes track fusion and infection while electrical stimulation promotes bone growth and reduces revision risk.

Complementary male and female load-sharing surfaces distribute bending and off-axis loads to improve fixation strength and reduce loosening.

Integrated cutting structures and threaded adjustment let this bone screw apply controlled joint compression without pre-drilling or extra tools.

Wireless power and bidirectional control let an implantable growing rod adjust scoliosis correction without repeated surgeries.

A flexible two-tube mold replicates removed intramedullary rods to cast antibiotic spacers with precise fit for curved or larger medullary cavities.

Bone-engagement fins, redirected fasteners, and locking clips improve vertebral anchoring stability and help prevent implant dislodgment.

Camera-tracked markers replace array sensors to guide rod insertion with real-time screw alignment images, cutting setup time and motion limits.

A threaded adjusting screw and releasable adapter control fracture compression, limit screw pullout, and support tensile force during healing.

Independent ratchet fixation and a removable extension block let one spinal implant switch between dynamic support and fusion-like stabilization.

Embedded load sensors and electrodes let an interbody spacer monitor fusion, detect biofilm, and stimulate bone growth to limit pseudarthrosis and subsidence.

Offset sensing converts implant rotation into measurable shaft translation, enabling accurate angular placement when anatomy blocks direct view.

Independently inclinable pin cannulas and modular blades improve spinal site access and visualization across anterior, lateral, and oblique approaches.

Retractor blades coupled to pedicle screw passageways create a working channel for vertebral displacement and rod insertion with less tissue trauma.

Segmented negative threads and a locking ring let one intramedullary nail securely fit different locking screw sizes and pitches.

Differential broach teeth compact bone proximally and cut distally to improve hip stem fit, rotational stability, and distal clearance.

A rounded-head bone tie and guided inserter stabilize degenerated facet joints with less invasive, potentially reversible fixation than vertebral fusion.

A polyaxial screw-and-washer implant enables minimally invasive SI joint fusion with graft-filled cavity preparation, less blood loss, and shorter recovery.

A superelastic compression element maintains bone fragment compression despite resorption and resettlement, supporting fracture healing.

A three-point fixation head and set screw improve rod alignment adjustability while resisting slippage and disengagement under load.

Opposed rotating propulsors replace impact insertion, advancing the implant through bone with less trauma and more precise fixation.

Opposing flanges and wings lock a spinal rod cap against splay and rotation while still allowing easier removal during revision surgery.

A multimodal rasp-box osteotome prepares SI joint surfaces to bleeding bone for precise fusion while reducing tissue and neurovascular risk.

A concave spino-laminar prosthesis expands the spinal canal after laminectomy while restoring posterior neural protection and spinal stability.

Stored steering energy lets a vertebral tool curve off-axis through one cannula, reducing invasive multi-path access.

An adjustable sled and lock align the guide to multiple calcaneal plate sizes for more precise pilot hole drilling and screw placement.

A downwardly deployable insert and retainer lock the shank head after rod placement, improving angular adjustment in spinal fixation.

Dissimilar guide flanges and splay control ramps let spinal implant closures lower installation torque while limiting receiver arm loosening.

An inner-sleeve and driver assembly helps place and remove a bone screw in cement-filled vertebrae with fewer instrument changes.

A contoured plate with distributed screws and cable fixation stabilizes the greater trochanter in osteoporotic bone while reducing soft tissue irritation.

A cannulated feeder with a pawl and cantilever arms enables accurate single-step pedicle screw insertion while fitting multiple surgical tools.

Temperature-responsive shape memory alloy rods self-align to misaligned pedicle screws, eliminating complex manual bending and reducing surgical time.

Barbed arrowhead heads anchor bone tissue within the medullary canal, resolving migration and infection risks from external K-wires.

A hydraulic expandable spinal rod system uses fluid pressure to lengthen a piston within a static cylinder, accommodating pediatric spinal growth.

A visco-elastic facet implant absorbs mechanical energy to reduce pressure on articulating surfaces.

Direct attachment of fusion rods to polyaxial pedicle screws eliminates intermediate connections, reducing surgical complexity.

Segmented C-shaped implant applies compression and resists rotation, eliminating the need to bend rigid plates and reducing operative time.

Segmented plates conform to pedicle and lamina anatomy, stabilizing pars fractures while preserving spinal motion.

Integrating a spacer groove with a frame coupling portion eliminates movable washers, resolving complexity and unintended movement risks.

Expandable rings in the head assembly capture screw shafts manually, reducing vertebral preload while ensuring stable rod fixation.

A reusable surgical trial implant uses a flexible core enclosed in inert material to conform to desired shapes.

Transverse lateral fastening of the targeting tool preserves non-fragmented bone integrity and cartilage during humeral implantation.

A computational device identifies drilling direction and position from X-ray images to determine bone screw length using a 3D model.

Oblique distal holes in a retrograde femoral nail target posterior condyles, resolving screw trajectory issues that cause implant instability.

Integrated cross connector with adjustable tulip heads secures divergent rods, increasing torsional stiffness while preventing rod breakage.

A spinal drill bit features a cylindrical distal section and a proximal milling cutter that shapes the bone into a funnel.

A single cutting block guide performs femoral and tibial resections through adjustable positioning mechanisms.

S-shaped resilient implant stabilizes the spine and limits overextension by distributing loads across U-shaped extensions.

A spinal tether cross-member stabilizes the constraint device to prevent circumferential displacement, ensuring uniform elastic force distribution.

A pedicle screw assembly deploys a bone anchor laterally through the vertebral body to increase axial resistance.

Segmented surgical driver uses disposable tips to deliver precise bone cement volumes, eliminating waste and infection risks from hardened cement.

Divergent leg geometry resists bone migration and stabilizes fixation without requiring complex parallel structures.

A magnetic targeting system guides biocompatible devices to target areas using steering materials influenced by external fields.

Nested shafts deflect prongs to clamp a spacer, reducing tissue damage during minimally invasive spine procedures.

A probe reader with a Faraday cage isolates individual set screw antennas, blocking cross-talk interference to ensure accurate labeling.

Segmented fastener elements use threaded components to engage plates, reducing bone impingement risks while maintaining strong vertebral stabilization.

A bone anchor assembly uses a wing to hold auxiliary anchors that augment primary fixation.

Nested fastening members with curved pressing grooves prevent displacement and loosening in minimally invasive spinal surgery.

Segmented locking units enable stable fixation while simplifying insertion procedures.

Bone fusion device with extendable tabs provides stability during arthroscopic insertion.

A curved anchoring device penetrates vertebral plates along the intervertebral space plane to secure intersomatic cages.

A cylindrical orthopedic plate uses clamp assemblies to secure bone anchors, enabling multi-axial positioning during surgical implantation.

Custom tibial wedge corrects bone alignment using 3D modeling data to resolve uneven load distribution from non-locked shims.

Introducing a curable fluid that solidifies upon initiator contact repairs leaking implanted hydraulic devices without surgical intervention.

A tissue protector with a thinned region detaches from an orthopaedic plate after fastener insertion.

A spinal instrument featuring retractable blades and a distractor element mounted between spinous processes to create flexible working channels.

A surgical cable system uses a planar locking structure to maintain tensioned loops without large incisions.

A surgical driver instrument uses a non-threaded inner sleeve interface to securely engage bone fasteners.

An asymmetric V-shaped or pentagonal spinal rod design increases contact area within the holder to resolve loosening risks under loading.

Grooved flexible members enable tailored flexibility to resolve trade-offs between manufacturing cost and adaptability in dynamic spine stabilization.

Segmenting the coil into a detachable end cap preserves nail body structural integrity while inducing therapeutic electrical potentials.

A surgical connector uses a translatable second member to urge a locking element into engagement with an implant for secure fixation.

Flexible guidance elements attached to pedicle screws enable precise rod insertion through minimal incisions, reducing tissue trauma and surgical complexity.

Segmented interspinous implant allows removal of proximal body to reduce size and discomfort while main section maintains stability.

Robotic arms guide drill guides to maintain alignment within the narrow sacral corridor, reducing radiation exposure for surgical personnel.

Elongated slide channels and reduction fasteners enable precise bone fragment spacing control during surgical repair.

An abrupt thread-termination surface prevents excessive thinning near the neck, enhancing pullout force by 5% while maximizing thread turns.

An expandable clavicle nail increases radial holding force to prevent device movement and subsequent fractures during bone healing.

A compressible medical implant expands after insertion to stabilize adjacent vertebrae.

Gripping jaws in a spinal rod interface device connect new rods to existing supports, enabling minimally invasive revision surgery without large incisions.