Guide Needles TRIZ Cases

A hemostasis-integrated aspiration valve lets physicians modulate vacuum with one hand, improving clot retrieval while reducing vessel collapse risk.

A tether-driven expander opens the introducer sheath before device removal, preventing sheath deformation during withdrawal of deflated balloons.

An extendable clot retrieval shaft preserves device control during microcatheter removal and supports larger-lumen aspiration near the clot.

A coaxial catheter with flexible distal access and proximal support shortens stroke thrombectomy time while reducing manipulations and vessel damage.

A needle-guided intravascular catheter creates an intramural space for targeted vessel wall infusion while limiting injury, flow compromise, and thrombosis.

An endovascular spinal shunt uses separable expandable flanges to divert CSF through the venous system while reducing neural injury risk.

A fluid-expandable sheath increases lumen diameter in situ to cut delivery push force, reduce vessel trauma, and shorten procedures.

3D lumen and manipulator shape data guide outer and inner manipulator positioning, improving target access and reducing tissue damage.

A movable flat seal in the guide catheter hub enables fluid-tight device passage, reducing air infiltration during LAAC procedures.

A proximal deformable mesh section absorbs catheter pulling force, keeping the locked lumen stabilizer aligned in tortuous vessels.

A female Luer lock with elastic grip members improves needle hub fixation while minimizing skin irritation during catheter attachment.

A reinforced distal dilator tip separates flexibility and support to cross stenosis with better force transfer and less kinking.

An internal inflatable balloon seals the sheath-catheter gap to block blood ingress, prevent clotting, and stabilize catheter position.

A deformable sleeve and inflation system secure an introducer on the patient while allowing repositioning without manual holding or sutures.

An implantable pulmonary artery balloon and subcutaneous reservoir use external pressure monitoring to improve treatment control beyond costly drugs.

A finger-wheel guide wire feed enables one-handed ultrasound-guided catheter placement with better visualization, sterility, and positioning accuracy.

Adjustable balloon spacing in a carotid stenting sheath enables precise occlusion, safer stent placement, and emboli suction in complex anatomy.

Dual steerable guide catheters navigate severe right atrial angles to align and deploy a tricuspid valve fixation device while avoiding atrial wall engagement.

A sealing portion inside the catheter preserves lumen size while enabling rapid air removal to lower balloon rupture risk during use.

A rotatable funnel sheath and 3-shaft extractor improve controlled deployment and removal of large wall-adherent clots in vessels.

A manual forward-feed grip retracts the puncture needle into the catheter tube to improve handling, reduce contamination, and prevent accidental injury.

Tubing position markings reveal catheter movement at the skin surface, enabling early dislodgement detection and faster corrective action.

A helical access structure expands from a low-profile insertion shape to reach curved body passages while reducing tissue damage.

A spring-biased obturator blunts the needle tip after vein entry, helping advance the catheter without back-walling or vein disruption.

A nested steerable catheter with coolant channels reaches peripheral tissue regions while limiting overheating, eschar formation, and collateral damage.

A friction-based movement inhibiting mechanism resists impact-driven valve opening in a catheter hub to maintain sealing and prevent leakage.

Integrated push tabs and needle protection enable one-handed IV catheter placement while reducing off-axis loading and accidental needle sticks.

A peeling guide tube routes drainage through the extraperitoneal fat plane to prevent intestinal-motion dislodgement and maintain drainage.

A distal end slit linked to a side slit lets the catheter valve open under drug pressure while still blocking blood backflow.

A cross-hair silicone seal and enlarged reservoir trap and evacuate air in a guide catheter, reducing air emboli during implant delivery.

Movable resilient arms split the sheath into controlled tails, enabling off-pump device deployment with less blood loss and device damage.

Magnetically coupled catheters enable precise puncture and contiguous tissue ablation with less repositioning, shorter procedures, and lower thermal injury.

Directing oxygenated blood into the thoracic aorta improves cerebral oxygenation, preserves pulsatility, and avoids extra vascular access.

A movable energy guide shifts along calcified vascular lesions during lithoplasty to deliver pressure waves more precisely and improve vessel patency.

A cap-controlled retractable blade lets a tissue dilator nick and expand the insertion site in one step while reducing blade jams and tissue damage.

A sliding membrane seal and rigid actuator control blood spillage while enabling easy luer fluid connection and repeat use.

A compliant seal and movable safety clip allow smooth catheter release while automatically capturing and shielding the needle tip.

A flow diverter and expansion channel redirect fluid into circumferential dead space to clear blood residue and lower infection risk.

A self-healing septum and sealed adapter body enable interchangeable vascular connections while limiting non-sterile exposure and blood leaks.

A movable hub component pierces a valve only when needed, limiting blood leakage while enabling flashback confirmation and safe catheter placement.

A trigger-released spring carriage controls needle speed and force to improve placement while reducing tissue rupture, pain, and anxiety.

A coiled distal section with a stretch-resistant core improves stability during aneurysm packing while staying flexible in tortuous vessels.

A radially anchored catheter and stiff penetration tip open fibrotic chronic venous blockages when guidewires cannot track through lesions.

A retractable needle housing removes the split-needle disposal step, lowering needle-stick and contamination risk during catheter placement.

A radially expandable sheath with a repositioning sheath enables smaller pump insertion access while reducing bleeding, friction, and thrombosis.

A tapered sheath tip and transition ease tissue over a slotted introducer, lowering insertion force and reducing trauma during venous access.

A moving male luer opens the needleless connector valve to vent trapped air during catheter priming, helping reduce embolism risk.

Motorized hub assemblies and a telescoping member improve catheter positioning, reduce inadvertent motion, and speed neurovascular access.

A dynamic clamp with ribs and valleys secures a catheter while allowing controlled rotation or axial translation during deployment.

A nested delivery catheter reinforces a large-bore introducer sheath, enabling thinner walls, lower vessel trauma, and fewer procedural steps.