Guide Needles TRIZ Cases

Slotted elastic sealing disk automatically closes catheter opening upon guide wire withdrawal, preventing significant blood loss and ensuring safe handling.

A retractable needle catheter delivery system sequesters the piercing component within a housing after deployment.

Molded spring fingers on the nut carrier eliminate welded flanges, reducing manufacturing costs and improving hygiene.

A lead introducer system uses an annular seal member to create a fluid-resisting barrier between nested needle components.

Braided flat wire torque transfer layer maintains large bore size while delivering pushability and kink resistance for cardiac navigation.

Segmented carrier and delivery balloons expand stent-valves sequentially, enabling percutaneous insertion through narrow femoral arteries.

An expandable intravenous catheter uses inflatable segments to increase lumen diameter after insertion.

A subcutaneous implant delivery apparatus with a receiving portion and stabilizing portion holds vascular access devices in place.

Tuned control members modify stress-strain responses to deliver thermal energy, reducing side effects from pharmacologic treatments.

Nested introducer sleeves dilate the cervix before guiding a hysteroscope cannula, reducing rigid-device insertion pain.

A disposable transcutaneous sensor inserter uses a spring unit to drive the needle hub and carrier body into an advanced position for subcutaneous placement.

A dilator-receiver mover adjusts the protrusion length of a dilator assembly within an elongated sheath.

A catheter positioning system uses a releasable clamp to constrain axial movement between the needle and flexible catheter during insertion.

A medical catheter assembly uses an inner member with apertures to deliver anti-clotting agents directly into blood vessels.

Segmenting the reinforcing braid into discrete circumferential sections with axial gaps prevents spiral slitting and lead dislodgement during catheter removal.

Remote catheter navigation creates an extra-vascular tissue track near the clavicle, resolving bleeding risks from blind puncture in occluded veins.

A flushable catheter assembly uses a septum activator to open a closed pathway, enabling controlled fluid flow through the adapter.

Offsetting the distal lumen opening prevents vessel wall contact, reducing blood hemolysis during infusion.

An absorbable hydrophilic sleeve cushions a cerebral introducer, preventing vessel trauma and spasm while maintaining pushability.

Insert polyethylene liner into PTFE sheath end and mold hub halves to fuse joints through drilled holes.

A steerable guide catheter uses a partial sleeve to protect the dilation balloon during articulation.

Merging a capturing catheter inside a protective sheath eliminates dilator steps, preventing collapse and reducing user burden.

Magnetic coupling coordinates two catheters to deploy a bridging element across the heart chamber, reducing procedure duration and complexity.

An expandable inner layer with a fold portion allows the introducer sheath to increase its internal diameter dynamically.

An introducer sheath releases a vasodilating agent to expand the vessel, preventing stripping during extraction.

A catheter assembly integrates a needle hub with a working platform to guide guidewires during vascular access procedures.

A guided urinary catheter for women uses a dedicated fixing part to align the urethra and a hydrophobic membrane to stop leakage.

Conventional IUPC insertion needs two-finger dilation; a clipped manipulator guides the sheath through a narrow cervical opening for catheter placement.

A safety needle device uses a sliding piece to cover the needle after use.

A dual-sheath delivery system uses radio-opaque markers to guide implant placement within the cardiovascular anatomy.

A split overtube assembly features an inflatable balloon with textured exterior protrusions to anchor within the physiological lumen.

A disposable safety butterfly needle retracts the sharp tip inside a hollow body using a tensioned elastic means and pivot pin.

A transseptal access device uses negative pressure to pull septal tissue toward a stationary needle.

Deflectors redirect irrigation fluid over the camera distal face to clean the lens surface, resolving contamination in narrow sinus pathways.

A multi-lumen introducer device provides fluidly isolated channels for concurrent instrument and imaging access.

Rigid protector body slides along needle without elastic contact to eliminate sliding resistance while slip-stop mechanism maintains secure protection position.

Variable rigidity along the catheter length maintains cerebral tortuosity while reducing procedural time and operator dependency.

Segmenting the protector into a protecting member and a closing member reduces sliding resistance, enabling safe one-handed operation during removal.

A magnetic safety clip on a Seldinger cannula automatically covers the distal tip upon guide wire withdrawal.

Molded plastic resilient arms clamp needle tips, eliminating metal scraping vibrations and particle generation while lowering production costs.

An eccentric guide extension catheter secures within a guide catheter to maintain precise positioning during interventional procedures.

A cannula infusion device uses a protective element to encase the needle tip during insertion and retraction.

Segmented cannula, valve, and catheter assemblies with a locking mechanism prevent pneumothorax risk during fluid aspiration.

C-shaped protection segments engage the outer needle hub to prevent unintended detachment while ensuring smooth inner needle withdrawal.

A fluid vessel insertion device uses a retraction mechanism to pull back the puncture member when fluid pressure enters the needle tip.

Dynamic pre-formed curvatures transition from straight insertion to a wrapped state, resolving placement precision versus ease of operation.

Flash chamber reagent strips analyze blood glucose and alcohol levels concurrently with venous catheter placement.