Guide Wires TRIZ Cases

A flexible catheter uses a bump mechanism to disengage an embolic coil from its retaining ring for controlled deployment.

Segmented fluid injection lines with local frictional engagement prevent guidewire lumen distortion during extension and retraction.

Segmented guidewires use distal fingers to resolve the contradiction between small-diameter navigation and torsional stiffness in tortuous neurovasculature.

Axial grooves on helical coil wire anchor solder joints, preventing detachment of tungsten guidewire components under pulling forces.

A guidewire introducer device positions catheters around the mitral valve using distal deflection systems.

A composite guidewire design uses differential thermal expansion to generate residual compressive stresses within the inner core material.

Helical filaments on a catheter tip prevent kinking during navigation, maintaining structural integrity in small vessels.

Segmented guidewire design balances torque transmission and tip shapeability by extracting the tube structure from the distal zone.

An identification section on a wire guide provides visual and tactile markers to resolve confusion between multiple devices during interventional procedures.

Positioning a cylindrical coil joint over a tapered hollow shaft prevents unwinding while improving tracking through curved vessels.

A catheter system approaches the central venous system from inside out using a needle wire to create a usable track through an occluded vessel.

Dynamic frequency tuning minimizes coil impedance and phase delay, boosting drilling force while reducing power consumption.

A steerable catheter skeleton uses a metal support structure to enable defined bending movements while maintaining axial stiffness.

Auxiliary catheter accommodates guide wire for snaring device capture, preventing permanent plastic deformation during retrieval.

Heated composite shaft segments bend independently to navigate tortuous vasculature, resolving steerability versus complexity trade-offs.

Angled guide wire brake slot creates a buffer zone for variable wire accumulation, enabling catheter advancement without repositioning the proximal clamp.

Segmenting the system into a single-use wireless unit eliminates complex power delivery while maintaining sterility.

Segmented projections on the spiral surface minimize contact area and fluid drag, enabling smooth advancement in liquid-filled sleeves.

Offset centers of mass create centrifugal force and an augering effect that expands lesion diameter beyond the burr resting size.

Dual blade micro-cutting machines shape guidewire beams from cylindrical stock materials.

Internal coupling structures eliminate attachment loops and knots, reducing tissue irritation during gastrointestinal placement.

Three-region radiopaque segmentation varies X-ray image contrast to resolve low visibility issues in conventional helical coil guide wires.

Integrated navigation wheels on medical instruments enable sterile field cursor control, eliminating time loss from non-sterile interface devices.

An elastic coupler with movable wings secures catheter components, preventing slippage that causes procedural delays in acute stroke treatments.

Inflatable balloon on a guide wire occludes blood flow to stabilize vascular injuries and minimize bleeding during large bore catheter procedures.

Segmented distal section openings in a guidewire enhance navigability through tortuous vasculature by balancing local flexibility with proximal control.

Varying coil pitch adjusts bending rigidity to alleviate stress concentration at the joint between the shaping ribbon and wire body.

A catheter allows a wire guide distal portion to extend through an opening and form a flexible surface.

Segmented core members provide pushability while the undulating coil surface engages and screws through vessel occlusions.

A medical guide wire uses projection portions with asymmetrical sliding properties to facilitate insertion.

A guide wire grasping device adjusts a movable portion to sandwich the wire against a sheath for secure capture.

A tethered basket system captures emboli via a microcatheter to restore blood flow.

A catheter with a lateral hole receives a short wire to slide over it, eliminating the need to feed long wires through the entire device length.

A wire guide torque device uses a spring-biased lever and retaining ring to secure the guide along a handle groove for one-handed operation.

A tapered funnel aligns the guidewire with the extension wire lumen, reducing manual dexterity and time during medical procedures.

A self-expanding centering member with a flared distal portion aligns guide catheters, capturing emboli to reduce stroke risk during valve crossing.

A modular guidewire system segments the device into detachable units for customizable length and tip configuration.

Resilient clamping member holds guide wire in place during vibration.

A dilation catheter with a malleable internal guide adjusts bend angles for precise anatomical access.

A steerable guidewire uses asymmetric reinforcement and stress relief to enable single-plane deflection.

Alternately disposed coil turns create gaps that facilitate brazing metal application while maintaining central axis alignment.

Slotted tube deflects strips outward to anchor a stiff guide wire, preventing axial migration during spinal surgery.

A filler layer sits between the inner wire coil and marker coil to enhance weld strength and secure component positioning.