Internal Osteosythesis TRIZ Cases

A variable angle connection assembly secures spinal implants to bone anchors through rotatable and translational movement.

Intermediary reattachment rod enables precise extender attachment in adipose tissue while maintaining vertebral construct alignment.

Retrograde insertion of an intramedullary nail secures the tibiotalar joint while preserving subtalar articular surfaces.

A spinal fixation tool attachment structure uses an undercut recess to resist splaying and separation of guide tools from bone screws.

Anterior cervical plate with movable anchors adapts to varying vertebral body sizes and spacings.

Dual alignment guides couple to bone plates, enabling single-person closure of resections while reducing procedural time and complexity.

A bone plate assembly uses a combination hole design to compress and lock bone screws in a single interface.

An inflatable bone tamp uses an outwardly tapering profile to direct inflation forces toward vertebral endplates.

Elastic deformation of female portions enables forceful engagement with male portions, eliminating tedious suturing processes during sternal closure assembly.

Diagonal proximal bores extend bone screw length to improve fracture fixation stability.

A segmented pedicle screw assembly uses an exposed neck to allow precise intraoperative depth assessment during spinal fixation.

Collapsible wings compress within the spinal implant body to eliminate separate removal incisions, resolving cumbersome extraction procedures.

A rotatable arm mechanism deploys between spinous processes to relieve nerve impingement risk during minimally invasive implantation.

A rack-and-pinion instrument resolves the trade-off between high force application and surgical precision through segmented, pivotable arms.

Radial compression of an annular ring axially locks the cross member, resolving stability versus complexity trade-offs.

Segmented needles and spring deployment minimize material expulsion under pressure while protecting endplate integrity.

A surgical guide assembly uses a torque bolt to control femoral and tibial distraction for precise resection alignment.

An arc-shaped bone nail with a 130 mm radius and tapered conical design avoids plantar nerve damage during hindfoot fixation.

An asymmetric implant design matches bone anatomy to reduce stress shielding and improve fixation.

Derotation instrumentation links vertebral extensions via movable joints and cam assemblies to distribute stress concentrations during surgical correction.

Segmented implant plate resists biomechanical forces through proximal compression and distal tension fasteners, stabilizing femoral neck fractures.

Omega-shaped end cavities accommodate pre-fixation pins, reducing procedural time and interference with existing spinal constructs.

Circumferential slots in a flexible spinal element provide controlled movement while reducing stress on adjacent vertebrae.

A hip fracture device uses a barrel and friction pin to control axial screw movement.

A flexible surgical sensor generates a three-dimensional path of the spinal contour to guide precise rod bending.

Segmented threaded shank uses distinct pitch sections to anchor cancellous and cortical bone, resolving single-pitch engagement trade-offs.

A percutaneous spinal implant actuator rotates an elongate retention member to expand between adjacent spinous processes.

A spinal hook uses an inner collet and outer portion to transition between locked and unlocked positions.

Nested components attach to one handle to eliminate procedural time loss from successive instrument exchanges while maintaining coaxial alignment precision.

A rod reducer instrument uses a threaded shaft to convert handle rotation into linear pushing force for orthopedic fixation.

A superelastic intramedullary implant anchors within bone canals using mechanical deformation of wings and legs.

An expandable laminoplasty implant uses a gear mechanism to slide an inner housing within an outer shell for precise length control.

A unilateral inter-spinous spacer affixed to one spinous process enables spinal flexion while maintaining distraction.

Nitinol bone screws absorb shear forces at mobile joints to prevent implant failure and creep.

A robotic manipulator advances a dilator probe and coaxial sleeve to penetrate soft tissue and establish a stable working channel.

A bone compression device uses a threaded fastener and anchor to stabilize fragments.

Extendable tabs on the bone fusion device expand after arthroscopic insertion to increase surface area, reducing surgical trauma while stabilizing vertebrae.

A support rod with varying diameters enhances flexibility and structural integrity within a hollow flexible torque transmitting shaft.

A self-distracting interspinous spacer fuses to spinous processes using bone-promoting materials.

Extraction and intermediary principles remove bone tunneling steps, reducing fracture risks while maintaining fixation strength.

A segmented intramedullary structure uses interlocking segments and a tensioning member to facilitate insertion through small access holes.

Tension bands anchor to spinous processes to distribute forces and prevent adjacent level kyphosis.

Segmenting spectrographic ranges into distinct detection bands resolves tissue identification accuracy versus foreign body distinction capability.

A height-adjustable corpectomy cage resolves spinal height variability by employing nested cylindrical components with incremental locking mechanisms.

An expandable plastic screw anchor prevents loosening by expanding its inner space to match the screw thread.

A bilateral mandibular distractor device uses a single activation bar to simultaneously move opposing jaw segments.

A polyaxial bone anchoring coupling assembly uses a radially expandable retainer element to secure the bone screw head within the receiving part.

A cranial fixation plate with elastic tension springs enables semirigid bone flap movement.

Slidable blocker with spring element prevents screw loosening from vibration, ensuring stable cervical spine fixation.