Guide Needles TRIZ Cases

A step-lock dilator and spring hub keep an expandable introducer sheath tensioned during pump insertion, reducing vessel trauma and bleeding.

A plastic-metal needle guard uses resilient arms to auto-cover the needle tip after withdrawal, improving stick prevention and shelf life.

A wheel-coupled locking member keeps the fluid transfer connector engaged until the probe is fully retracted, reducing exposure and probe damage.

A fluidly isolated gas-filled regulator absorbs valve pressure spikes during large-bore insertion, reducing friction and improving control.

A lever-driven pivoting assembly inserts a cannula, retracts the needle, and keeps on-body injectors compact and easy to operate.

Partial longitudinal cuts and helical slits improve sealing while lowering peel-away force and preventing double breaks during insertion.

A nested actuator and spring retract the needle after deployment, enabling near-perpendicular cannula insertion without increasing patch pump height.

A spool-driven probe advances through an IV catheter to clear occlusions while reducing vasculature trauma during blood draw or infusion.

A bifurcated introducer hub enables two devices through one vascular access site while maintaining hemostasis and reducing migration risk.

A spool-and-wheel probe advances through an IV catheter to clear occlusions precisely while reducing trauma during blood draw or fluid injection.

A spiral supporting structure keeps the catheter lumen open during insertion and indwelling, reducing kinking in long or complex vascular paths.

A deflection lever, pull wire, and brake assembly improve catheter control for safer leadless pacemaker delivery and retrieval.

A detachable hub and shared connection portion let a separate member pass to the catheter outer layer without catheter removal or special mechanisms.

A segmented guidewire uses a sharp tip and proximal cutting section to expand the puncture hole and lower hoop stress during tissue crossing.

Optical fibers inside the cannula detect reflected light at the tip, giving continuous placement feedback and reducing injury risk.

Non-linear side-port flow and a removable blood collection adapter help peripheral IV catheters draw blood during placement and indwell with less hemolysis.

Selective rotation aligns sheath side holes to target vasodilator or contrast delivery, reducing fluid use, vessel spasms, and procedure time.

An adjustable side port angle aligns the fluid pathway for better flushing, clearing stagnant fluid that can promote bacterial growth.

A porous vent plug lets air escape through a catheter while blocking blood, extending venting time and reducing leakage during placement.

A housed probe mechanism advances and retracts through an IV catheter to clear occlusions with better control and less vein trauma.

A flexible intracochlear catheter enables controlled, air-free inner ear infusion to reduce cochlear damage during otic drug delivery.

Radially expanding arms and diverging catheters align all three tricuspid leaflets in one plane for precise joining and durable repair.

A braided, elastic, and polymeric sheath structure enables radial expansion without lengthening, lowering insertion force and lumen narrowing.

A clamshell lock with interlocking tabs and angled key cams restricts IV catheter access to authorized staff, reducing misuse and infection risk.

A keyed cam-and-tab lock restricts IV line access to authorized staff, helping prevent catheter misuse while staying easy to operate.