Guide Needles TRIZ Cases

A chamfered flexible jacket reduces friction against a rigid guard member, preventing snagging in minimally invasive procedures.

A steerable introducer sheath assembly integrates echocardiographic imaging to enhance visualization during medical procedures.

Axially split guide wire channels in a bifurcated delivery system prevent intertwining and ensure safe entry into branched blood vessel cavities.

Segmented stylet portions in a dual-lumen catheter prevent kinking and buckling, enabling rigid insertion without patient trauma.

Rotatable wing catheters stabilize devices on patient skin, reducing movement and infection risk from tape failure.

A curved support sheath enables angled interventional tool insertion through a fixed distal orientation.

A tapered introducer sheath guides a central venous catheter through a matching lumen to ensure smooth insertion.

Splitting sheath mechanism deploys branched medical device components sequentially through a single access point.

An integrated blood collection device reduces surface tension via a conical tip to eliminate separate transfer steps.

A catheter adapter port valve seals fluid access points to prevent leakage during infusion procedures.

A rounded sleeve end prevents tearing while straightening a soft catheter pigtail for rigid member insertion.

Heat treating polycarbonate-urethane copolymers eliminates kinking during bending, maintaining fluid flow continuity under pressure.

A collapsible working channel minimizes urethral friction during insertion, then expands to accommodate instruments.

Sliding walls in a polymeric tube adjust diameter dynamically, reducing surgical time and tissue trauma from multiple device exchanges.

A helical wire bending tool shapes medical cannulas while preserving cross-sectional integrity.

A catheter body with a groove and partition wall releases drug solution upon pressure.

Automated magnetic manipulation reduces procedure time and contamination risks during vascular access.

A peripheral intravenous catheter uses a slit valve that opens under pressure to allow fluid infusion.

A bi-directional crimp feature locks an introducer needle into a shielded position using proximal and distal engagement surfaces.

Radial compression secures a thin seal member against a housing bore, eliminating dead space and preventing blood leakage in vascular access devices.

An asymmetric low-profile catheter hub with a flexible extension tube stabilizes the device to reduce mechanical infection risk from hub movement.

Expandable vascular implant with a fillable intermediate segment blocks blood flow through catheter delivery.

A medical manipulator system adjusts drive signals using friction detection to maintain tool accuracy.

Ultrasonic vibration on the sheath minimizes ureteral injury risk.

A telescopic sheath uses an inner sleeve sliding within an outer sleeve to adjust length.

A self-contained infusion set integrates an activation button to automate catheter insertion and needle retraction within a single base unit.

A dilator expands a small catheter to increase lumen diameter, enabling high-volume fluid delivery through peripheral veins without invasive central lines.

An orienting catheter uses an occlusion balloon to isolate a target volume and reduce pressure inside the vessel wall.

Segmented guide and delivery catheters navigate tortuous vasculature while capturing embolic debris.

A slidable needle shield moves over the sharp tip using a biasing element and release latch.

A tapered guide sleeve with a slit wraps around a guidewire to eliminate the ledge effect during carotid siphon navigation.

Segmented cartridge design maintains sterility during insertion, resolving contamination risks inherent in integrated devices.

A flexible sleeve prevents catheter collapse and leakage at the insertion site while reducing patient discomfort.

A locking mechanism uses a flexible tubular member and pivoting cam actuator to secure elongate members within medical device handles.

Nested stylet tube enables precise electrode positioning near dorsal root ganglions while minimizing nerve damage during implantation.

An integrated catheter assembly uses a retractable needle to establish dual lumens for simultaneous fluid flow through a single insertion site.

A medical introducer sheath features a shaped distal region with curved portions to ensure smooth advancement.

Expandable balloon catheter occludes the Eustachian tube to retain medication in the middle ear region, preventing rapid drainage into the nasopharynx.

Merging needle and cannula into one unit reduces assembly complexity and device volume while maintaining reliable subcutaneous delivery.

Guidewire-integrated jugular catheter enables bedside placement without operating room transfer or anesthetist, eliminating radiological confirmation needs.