Guide Wires TRIZ Cases

Resin protrusions through spaced coil gaps help a guide wire bend smoothly while suppressing coating peeling and damage.

Adjacent-wire reinforcement with varied density and modulus improves catheter and guide wire torque transmission while tuning local rigidity.

Progressive zipper-lock guide units enclose catheters or guide wires during vascular intervention to limit contamination and reduce infection risk.

A pseudoelastic core shaft and parallel auxiliary wire keep the distal end flexible while absorbing tensile load to prevent breakage.

An offset operation wire inside a flexible tube lets one guidewire vary curvature and stiffness in situ, reducing wire exchanges and procedure time.

A removable guide tube and funnel route the guidewire around the impeller, easing transcatheter pump placement and left ventricular support.

Adjustable cutting guides and guidewire hard stops improve meniscal allograft fit while preventing tibial overdrilling injury.

A tapered catheter advancement element locates the embolus past the contrast limit, enabling one-pass aspiration with less time, radiation, and contrast use.

A tapered small-diameter distal needle and protected guidewire cut tissue trauma while preserving pushability and smoother retraction.

Flexible coils, embedded conductors, and polymer tubing let intravascular guidewires carry imaging components without sacrificing maneuverability.

A loop-shaped coil tip improves guide wire flexibility, torquability, and radioscopic visibility to reduce vessel damage during lesion crossing.

Curved and planar wire-facing surfaces make position alignment easier while improving torque transmissibility and reducing displacement in lesion entry.

Looped tip protrusions add traction and resist slipping, helping a guide wire excavate and cut through stenotic lesions.

A loop-shaped leading tip with convex and straight outer edges improves drilling entry and passability through highly calcified lesions.

A tapered distal joint with defined cone and spherical tip ratios helps a guide wire penetrate hard lesions while limiting vessel damage.

A stiff middle guidewire section blunts the needle tip inside a flexible catheter lumen to prevent wall puncture during insertion.

A continuous stiffness gradient in the distal extension stabilizes blood pump placement while reducing heart and vascular trauma.

A selectively permeable probe restores IV catheter flow while limiting thrombus blockage and enabling controlled fluid movement.

A nested guide catheter with a distal anchor improves ICE-guided annuloplasty placement while reducing contact with heart features.

Automated guidewire threading uses an auxiliary assembly, enclosed storage, and heparinized saline to cut manual handling and clot risk.

A coiled guide lumen centers secondary lumens and pull wires in a catheter while preserving flexibility, steerability, and compact assembly.

A nested deflectable catheter system places guidewires around the mitral valve through transseptal access, avoiding heart apex damage.

A radial progress indicator shows catheter rotation in real time, helping robotic neurovascular control stay precise without adding setup burden.

Rotatable jaws and an elastomeric insert secure catheters or guidewires in place without clamps, tape, or extra assistants.

Electrical or proximity sensing between the sheath and catheter confirms distal tip location without fluoroscopy, reducing radiation exposure.

Expandable foam fills gastrointestinal wounds while suction preserves drainage, helping prevent stent migration and infection during healing.

A segmented superelastic shaft with a 0.22-0.24 mm intermediate section improves torque response while preventing coil riding and collapse.

A looped core wire and movement restrictor create repeatable distal bending, improving steerability in small tortuous anatomy.

Independent robotic control of access, guide, and procedure catheters eases supra-aortic access and speeds distal neurovascular treatment.

A flexible RF guidewire punctures the septum with fewer exchanges, reducing tissue trauma, procedure time, and embolism risk.

RF septal excision creates a durable interatrial aperture without an implant, relieving left atrial pressure while lowering clotting risk.

Grooves and ridges on a medical shaft cut lumen friction without PFAS, easing advancement while preserving pushability and torquability.

Rotatable knobs, wire holders, and a lock improve steering precision, ease of use, and shape retention in steerable medical devices.

Rotatable dual knobs and a lock simplify four-way wire steering, improving control precision and holding the medical device shape.

An aqueous carbonyl iron suspension enables fast magnetic anchoring of a colonoscope guide while reducing kinking, friction, and tissue damage.

A curved gear slot and movable drive rollers help load tubular devices easily while constraining motion to prevent buckling.

Movable drive rollers and a closable slot let tubular devices load easily, then stay constrained for reliable endovascular motion without buckling.

Handle-mounted actuators and tensioning lines steer a flexible catheter tip through complex vasculature with better control and less patient discomfort.

Centering coils, fillers, or inner tubes keep the guidewire core aligned to reduce whip and snap while improving rotational control.

Predefined stylet length groups and a melted tab-track joint improve lead length matching, reduce waste, and maintain positioning accuracy.

Multiple radial contacts replace twisting ring connections to keep guide wire rotation stable and simplify wire insertion in vascular robots.

Radial wire filter sections in a self-expanding distal stabilizer capture thrombus and plaque fragments during catheter delivery to limit distal embolization.

A roller-based robotic feeder advances and retracts endovascular tools with imaging-guided control to cut procedure time and vessel trauma.

Varying-stiffness dilator regions and anchoring guidewires maintain sheath curvature for repeatable tissue puncture with fewer device exchanges.

Preformed SMA wire sections create repeatable tight bends and high deflection, improving catheter or endoscope access in complex anatomy.

Gradual durometer transitions in polymer catheter tubing improve torque control, reduce buckling, and help navigate tortuous vessels.

Gradual durometer transitions in polymer catheter tubing improve torque control, flexibility, and navigability through tortuous anatomy.

A movable pinch frame and biasing member raise roller-guidewire friction to reduce slippage and improve navigation through tortuous lumens.

A braided skeleton with graded polymer stiffness gives the microcatheter a steerable proximal end and a flexible distal tip for tortuous vessels.