Guide Needles TRIZ Cases

A catheter tip section integrates a puncturing needle and dilation balloon to pass through tissue openings.

Nested balloon catheter system overcomes difficult needle insertion into the foramen ovale by using a smaller guide tract.

A dynamic seal portion transitions between configurations to manage outer diameter changes during medical device delivery.

Spring-loaded clamping forceps secure electrode lines within a slitter tool housing to enable precise catheter shaft cutting.

Segmented connector ports and a low-pressure valve prevent liquid medicine leakage during syringe connection, maintaining fluid integrity.

An integrated catheter dressing system combines needle containment and flushing to maintain sterility during insertion.

Segmenting the wire guide and routing through a side access port maintains wire guide access during biliary device exchange.

Nested tubular structures protect drug coatings from contamination while enabling safe handling of balloon catheters.

A catheter tissue-engaging device rotates to stretch the pericardium away from the myocardium before puncture.

Laser-cut symmetrical apertures in the distal tip minimize cross-sectional ovaling while tension pull wires resist directional bias.

Thread a flexible cannula onto a lancing device before molding the housing, eliminating stabilizing mandrels and reducing damage during production.

A retractable needle catheter insertion device uses a manually extensible guidewire to guide the catheter into a vessel.

Split tubing assembly allows simultaneous dual catheter aspiration to prevent downstream thrombus travel and reduce stroke risk.

Injection molding creates a unified hub structure that eliminates solvent residue while maintaining strict diameter tolerances for reliable vascular access.

A cinch tube clamps an implanted catheter to prevent displacement and blood entry during anchoring.

A resilient needle guard employs a harder stopping element to prevent accidental removal, ensuring the needle tip remains blocked under retracting forces.

Aligning radiopaque markers on expandable catheter arms achieves accurate valve plane localization without contrast medium burden.