Guide Wires TRIZ Cases

Segmented snap-fit torque assembly constrains guidewire displacement to prevent bleeding during catheter procedures.

A dilatable guiding device tip uses wound helical members to adjust stiffness via torque.

A segmented wire guide uses distinct proximal and distal coatings to balance advancement force with tactile sensation.

Optical illumination replaces fluoroscopic visualization in sinus surgery, reducing radiation exposure and tissue trauma while enhancing procedural accuracy.

A shape memory alloy hypotube with spiral coils wraps an optical fiber core wire to enhance structural strength and safety.

Segmented catheter shaft with steering lines enables precise positioning while preventing kinking and maintaining small diameter.

Segmented torque device clamps sensor guide wires via asymmetric collet jaws, preventing male connector damage from misalignment and mechanical stress.

A catheter elongated body uses interconnecting helical and cross struts to define a lattice structure that enhances mechanical stiffness.

Layered mounting structures with recesses secure electronic components in flexible guide wires, resolving stiffness and space constraints.

Elongated guidewire bodies with internal grooves house conductor wires to maintain structural integrity while enabling electrical connectivity.

Backward insertion through tapered sections resolves U-bend obstruction and simplifies catheter threading.

Integrating an inflatable guide wire grip into the introducer eliminates frequent component removal and reassembly during endovascular procedures.

Segmenting the roller into layers distributes pressure, preventing damage while advancing catheters.

A foldable foil tube catheter expands its inner diameter to increase fluid transport capacity.

A guidewire grip portion with a polymer coating reduces contact area and tracking force.

A pivoting distal coupler allows a cytology brush to slide and rotate along a guidewire, preventing bristle-induced tip displacement in strictures.

Optimized core member geometry reduces fluid flow resistance while maintaining structural stability for accurate blood pressure signal transmission.

Segmented stiffness and flow-driven tips resolve torque transmission trade-offs in brain vessel navigation.

A handheld magnetic field device directs guide wires through vasculature using an electromagnet and permanent magnets.

Rotating a notched stylet within a cannula aligns segments to adjust device flexibility, resolving the trade-off between navigability and pushability.

A tube device uses concentric layers to reversibly stiffen under pressure, enabling precise catheter placement.

A catheter retaining mechanism uses a piston actuator to transition between open and closed positions for secure placement.

A hinged control handle uses deformable jaws to grip tubular medical elements securely.

A radiopaque guidewire with an expandable distal portion navigates the pericardial space.

A two-point clamping catheter manipulator uses paired rollers and a spring mechanism to advance and rotate guide wires with high precision.

Segmented wire guides join stiff proximal cores to flexible distal cores, preventing tissue damage during lumen navigation.

Helical strands disrupt fibrous or calcified occlusions while enabling simultaneous instrument delivery through a central lumen.

Nested guidewires link via magnetic coupling to adapt across vascular diameters, reducing procedural time and device complexity.

An intermediary obstruction portion on the guidewire prevents complete needle advancement, resolving reliability risks from retained medical devices.

A subintimal catheter uses a curved guidewire to navigate occluded blood vessels and reenter the true lumen.

An expandable filter sleeve retrofits onto infusion catheters, capturing emboli at the site while avoiding permanent implant removal procedures.

A segmented guidewire combines nickel-titanium and nickel-cobalt-chromium cores to balance flexibility and torsional stiffness.

Alternating spiral-cut metal sections join to resolve the contradiction between rigidity and flexibility in tortuous vessels.

Material continuity between the core shaft and first wire prevents coil detachment during vascular treatment.

A guide wire terminal member tapers to a distal leading edge to open vascular occlusions.

An abrupt annular step transition shields the dilator tip, reducing vessel wall trauma during vascular access.

Segmented coating film between coil gaps resolves bendability trade-offs while maintaining lubricity in tortuous blood vessels.

A guidewire camera and catheter optical fibers replace fluoroscopy to eliminate radiation exposure while enabling precise navigation through the vasculature.

Melted portions in tubular member fix wire body, preventing proximal coating curling during insertion.

A compliant flexible shell protects electrical connections while the tapered opening enables secure engagement of intravascular devices.

A flattened core wire creates a preferential bending plane to resolve spiral formation and improve tip durability during intravascular navigation.

Distributed crater-like recesses on a catheter surface accommodate saline fluid to minimize frictional losses during navigation through body cavities.

Segmented links with snap-fit joints transmit torque for drilling while allowing the shaft to bend along curved surgical paths.

Cryptographic verification of intravascular devices prevents unauthorized reuse and protects patient safety.

An annular member fills the step space between a guide wire core and resin coating layer, preventing proximal end catching and exfoliation.

Integrates catheter and guide wire controls to resolve coordination precision issues in minimally invasive surgery.

A third insulating resin tube reduces stiffness gaps at the coil-core joining region, preventing bending issues while maintaining insulation performance.