Osteosynthesis Devices TRIZ Cases

A rotatable drive shaft and modular templates let surgeons bend or cut implants precisely at the surgical site with fewer adjustments.

A modular drive-shaft and template tool bends or cuts implants at the surgical site with fewer adjustments, less surgeon fatigue, and better shape precision.

A selectable transmission lets one surgical tool switch between high-speed cutting, oscillation, and fastener driving while reducing tissue damage.

A pivoted cutter-bender combines rod cutting and bending in one instrument, reducing tool count and surgeon effort on hard surgical rods.

Inductance-based armature sensing identifies firing direction in an orthopedic impactor, cutting double firing, power use, and unnecessary impacts.

A crank-and-rack transmission switches a surgical output shaft between oscillating cutting and continuous rotation while simplifying sterilization.

A spring-driven angled tip enables one-handed microfracture hole control while reducing subchondral bone damage and force inconsistency.

Sequential balloon inflation with a pressure-controlled valve restores displaced vertebral endplates while preserving anatomical alignment.

An elongated slot and stepped guidewire let the reamer head disengage at mid-wire, cutting procedure time and contamination risk.

A coil-driven armature and striker with a spacer limit reverse motion, improving implant positioning and removal during orthopedic impacting.

A nested two-stage plunger amplifies pressure to transfer high-viscosity bone cement with less force and easier handling.

An intramedullary anchor, skin wedge, and screw mechanism stabilize osteotomy fragments and guide precise K-wire and screw placement.

A linear motor drives a piston and shuttle to deliver bone impaction without hammers or air hoses, reducing joint stress and orientation limits.

A spike-hook drill guide stabilizes the loose first metacarpal during CMC drilling, keeping the bit on the intended trajectory.

A 3D-printed vertebra-matched template guides pedicle screw size, position, and trajectory to reduce mislocation in scoliosis surgery.

An adjustable anvil enables quick end-effector repositioning, while a floating impact assembly isolates recoil from the motor.

An aperture in the interbody spacer flange guides cement into vertebrae, reinforcing bone and reducing graft subsidence and fracture risk.

A converging-axis guide aligns bone tunnels at a defined drill angle for anatomically correct ligament repair.

A sliding spinal dilator uses an eccentric guide hole and slender shield to enable bone cutting and cage placement.

Resilient strips ease transverse bone displacement while reducing jamming and breakage.

An oscillating rack transmission supports tissue cutting and fastener driving in one surgical tool.

A translational arm and rotation guide help realign the first metatarsal while maintaining the corrected intermetatarsal angle.

A guide rail, locking trigger, and toothed drill bullet stabilize the loose first metacarpal and maintain drilling trajectory.

A surgical cannula device uses a ball and socket configuration with a thumbscrew to maintain selected trajectory positioning.

Vacuum induction via telescopic plunger reduces pressure barriers, preventing leakage and tissue damage during precise bone cement delivery.

A high-pressure syringe integrates a needle valve and spring system to control fluid displacement.

A bowl-shaped scoop with a 360-degree cutting edge removes firmly adhered cement from hard-to-reach bone cannula areas.

A pivoting member with grooves engages a locking element to fix cannula orientation within a surgical cavity.

A pneumatic-hydraulic pressure intensifier amplifies gas pressure via a dual-chamber piston to dispense viscous bone cement without complex electronic controls.

Radial perforations on a cannula enable targeted fluid jet lavage, resolving the trade-off between selective irrigation and peripheral wall rigidity.

Rotating the handle exposes the proximal shaft for drilling then conceals it, eliminating hazardous handle detachment during orthopedic procedures.

A compact medical instrument with pivotal cutting elements and a force transmission device severs connecting rods.

A surgical cutting system uses a guide device to position the cutting element adjacent the spinal rod.

Dome-shaped acetabular guide mates with periacetabular anatomy to define a precise alignment axis for implant placement.

Automated feedback control adjusts mixing duration to optimize polymerization, preventing overflow or incomplete filling.

A directional reamer uses a flexible drive shaft and follower sleeve to deflect the cutting head for precise bone canal preparation.

Segmented cutting elements create precise cavity curvature and tapered grooves to resolve the trade-off between surgical precision and instrument complexity.

Thermal energy emission controls bone cement viscosity to resolve the contradiction between injection effectiveness and cement leakage.

A motor-driven orthopedic impacting tool uses a stored-energy drive mechanism to deliver controlled percussive impacts for surgical procedures.

A steerable vertebroplasty drill uses a flexible distal end to enable precise bone cavity creation.

A surgical file guide shield uses a dimple to maintain blade alignment during reciprocation.

Coaxial inner and outer tubes guide a cutting element while flexible legs expand to clamp the bone canal.

Segmentation replaces fixed metal components with replaceable polymer parts, eliminating set screw fatigue.

A retractable outer sleeve exposes an inflatable structure of variable length, accommodating varying vertebral body sizes during augmentation.

V-shaped grooves capture cables through friction, reducing surgery time and space requirements in deep wounds.

Multi-handle surgical tool grips intramedullary nails via frictional collet coupling, resolving ergonomic handling constraints during implant manipulation.

Segmenting the device and using an incompressible fluid intermediary reduces pressure build-up and clogging risks during vertebroplasty.

A retaining screw driver assembly uses a sliding member to frictionally engage bone screws for secure handling during orthopedic procedures.

Motor-driven bi-spring surgical impact tool uses an eccentric cam to generate controlled linear strikes via a drive rod and shuttle mechanism.

Computer-controlled actuators bend spinal rods to match patient anatomy, reducing operative time and stress on pedicle screws.

Spring-loaded clamping jaws in a hollow shaft wire driver eliminate complex adjustment mechanisms for quick wire handling.