Guide Needles TRIZ Cases
- Large Lumen Guide Catheter with Asymmetric Braid
Asymmetric braid reinforcement structure in guide catheters improves pushability and torque transmission while minimizing kinking during coronary navigation.
- Treatment Catheter with Movable Sleeve and Seal Unit for Controlled Agent Delivery
A treatment catheter uses a movable sleeve and seal unit to control fluid flow through distinct shaft holes.
- Expandable Iliac Sheath for Minimally Invasive Vascular Access
Segmented expandable sheaths navigate stenotic vessels in a collapsed state, then dilate radially to accommodate large interventional catheters.
- Rotating Luer Lock Hemostasis Valve for Guide Catheter Control
A hemostasis valve integrates a rotating male luer lock connector to enable precise guide catheter positioning.
- Stylet Notch Alignment for Dynamic Flexibility Control
Aligning notched stylet segments with cannula openings adjusts local rigidity, resolving the trade-off between navigational flexibility and distal pushability.
- Catheter Hub Seal Zone for Leakage Prevention
A compliant catheter hub seal zone expands to accommodate varying device diameters.
- Movable Cannula Needle Tip Retraction Mechanism
A cannulation device with a movable puncture needle that transitions between exposed and retracted positions.
- Introducer Placement System With Radial Locking Spring
A coil spring applies even radial compressive force to an introducer sheath, fixing the device position without reducing lumen diameter.
- Expandable Peel-Away Introducer Sheath for Vessel Access
A peel-away introducer sheath with a radially expandable tubular body accommodates large medical devices during endoluminal procedures.
- Transnasal Balloon Catheter for Sinus Ostia Dilation
A flexible balloon catheter system dilates sinus ostia through radial expansion to restore drainage pathways.
- Expandable Balloon Sheaths With Splitting Element
Tubular sheath with longitudinal splitting element protects expandable balloon and drug coating from damage during catheter navigation.
- Nested Tubular Instruments for Thrombus Penetration
Nested delivery devices advance progressively longer tubular instruments through catheters to clear thrombi and enable needle-free blood collection.
- Safety Catheter Assembly with Automatic Needle Tip Protector
A safety catheter assembly deploys a tip protector to cover the needle upon withdrawal.