Guide Needles TRIZ Cases

A smart intravenous catheter uses a sensor module to monitor tissue characteristics and transmit data remotely.

Asymmetric mechanical notches and tabs replace electronic identifiers to prevent improper port connections and reduce medication errors.

A catheter needle assembly uses a sliding guard to retract the sharp tip into a protective sheath after insertion.

A coaxial catheter assembly advances over a short guidewire to dilate passages and position stents.

A shapeable distal portion angles to navigate tortuous vasculature and facilitate precise intravascular re-entry.

A catheter system uses a flash chamber and guided wire advancement to manage blood flow during arterial access procedures.

Elastomeric coating on guidewire tube increases friction with catheter body to enhance mechanical coupling and pushability.

Three-dimensional spiral structures improve guide wire stability and control, enabling effective navigation through tortuous vessels.

A needle assembly integrates a diagnostic sampling port into the flashback chamber for direct fluid access.

A catheter introducer integrates a needle safety device that automatically covers the needle tip upon withdrawal.

A catheter with intrinsic curvature tracks over a guidewire to navigate the nasal cavity.

An integrated medical device combines balloon dilation, stent placement, and image navigation into a single instrument for sinus surgery.

An expandable introducer sheath radially expands to accommodate larger devices while maintaining a compact folded profile.

A helical balloon assist device uses an independent inner core to maintain a compact tubular shape during insertion.

A retractable needle assembly uses a longitudinal gap between translucent outer and inner sleeves to create a visible blood flashback pathway.

An integrated catheter seal zone accommodates varying device diameters to prevent bodily fluid leakage and backflow during delivery procedures.

A groove portion protects the drug-containing hydrophilic coating from peeling during insertion, ensuring reliable hemostasis and delivery.

A rotating seal in the access sheath maintains hemostasis while accommodating multiple catheters, reducing procedural complexity.

A catheter assembly uses a hollow stabilizing component and guide wire to facilitate proper placement of the sheath.

An anchor assembly deploys a pre-bent midportion and needle to form an expandable tract, eliminating prolonged manual compression.

Axial channel between stylet and introducer tube enables anesthetic flow without removing the stylet.

A notched housing design concentrates separation force to minimize manual effort and prevent unintentional dislodgement of the introducer sheath.

Angled-tip catheter positions needle-tipped guidewire through vessel wall, eliminating blind puncture risks.

Replacing blasting with press-fitting eliminates foreign matter contamination while increasing joint strength through tapered surface engagement.

A catheter device uses a biasing arm to retract the introducer needle tip into the lumen.

A ported catheter adapter integrates a retention tab and ring to secure the septum actuator within the lumen during infusion procedures.

Segmented pigtail catheters curl to access viscous pleural fluids, resolving the trade-off between removal effectiveness and procedural invasiveness.

A medical tube uses a pressure-responsive mechanism to switch between open and closed states for controlled fluid drainage.

A needle protector assembly secures the needle hub inside a protective cover using an interlocking mechanism.

A dilation catheter system integrates an onboard light source and manual inflation mechanism to enable precise balloon placement.

Locking elements engage an annular groove to arrest the needle, preventing needle stick injuries.

A protective cover with a projection shields the push button, preventing accidental needle retraction before venipuncture completion.

Radially expandable flexible members in the sheath define isolated spaces that direct fluid flow to remove small stone fragments while protecting ureter tissue.

Multiple distal imagers and a tissue support mechanism maintain visualization in collapsing brain cavities.

A catheter blood shield retracts proximally via needle bump contact to cover the sharp distal tip.

A safety cannula assembly uses a main body trigger to release a sliding body, enabling smooth pullback movement.

A variable thickness inner liner reduces stiffness at the distal end of an aspiration catheter to improve trackability through tortuous cerebral anatomy.

A catheter insertion device integrates a needle cannula, guidewire, and safety clip for single-handed operation.

A variable stiffness elongate device transitions segments between rigid and flexible states to maintain desired poses during insertion.

A catheter insertion device uses an advancing sleeve with ramps to move the tube forward.

An expandable braided valve prevents embolic agent reflux during catheter procedures, ensuring targeted delivery and minimizing adverse events.

A hand-held needle insertion device uses a decoupling mechanism to separate the vibrating spring from the operator handle.

A dilation catheter with a deflectable guide rail adjusts bend angles via a cam barrel mechanism.

Segmented tapered dilator guides wire insertion through integrated cutting blade, reducing procedural complexity and vascular injury risk.

Multi-mandrel die extrusion merges catheter body and dilator sections, eliminating junction bumps that cause skin catching.

Varying the bore cross-section to non-circular at the tip resolves the trade-off between manufacturing simplicity and penetration efficiency.

A catheter insertion device uses a flexible beam mechanism to extend and retract an introducer needle alongside a soft cannula.