Guide Needles TRIZ Cases

A curved flexible diaphragm with a traverse slit opens and closes automatically via pressure changes.

Merged one-way and port valves eliminate manual occlusion to reduce blood exposure risks.

Permeable sheath delivers energy through fluid medium to impair smooth muscle while preserving endothelium integrity.

A curved introducer sheath navigates the cerebrospinal fluid space, resolving delivery accuracy constraints in complex anatomical pathways.

A balloon catheter steering handle rotates wires to bend the guide tube end.

A dilation catheter assembly incorporates a removable guide member and rotary control mechanism for precise guidewire advancement.

Segmented coronary sinus guides with local nitinol reinforcement balance flexibility for altered anatomy against torqueability for precise placement.

Segmented outer sleeve and inner cannula minimize tissue trauma while accommodating standard wire guides.

An expandable introducer transitions from a compressed profile to an expanded state using a dedicated support member.

An inflatable overtube creates a sealed compartment to improve ultrasound imaging quality by minimizing air interference while preventing fluid escape.

A pull wire mechanism bends a guide wire catheter to fit the thoracic arch, creating working space for branch vessel catheterization.

Tapered pneumostatic clamp maintains pleural pressure while the semi-rigid sheath enables precise chest tube positioning.

An integrated blood control valve prevents clinician blood exposure during placement without adding manual procedure complexity.

Integrated port and blood control valves prevent leakage while allowing air venting through surface tension mechanisms.

Expandable catheter pump sheath assembly stabilizes impeller flow across the aortic valve via vessel contact zones.

Tapered geometry and nested configuration reduce stent-device interaction while ensuring precise delivery of interventional devices.

A perforated expandable sheath adapts to different catheter sizes, reducing vascular trauma and blood loss during intravascular procedures.

A Blunt Dissection Catheter creates a dissection track through vascular occlusions using atraumatic spreading members.

Integrated introducer sheath eliminates separate dilators and hemostatic valves, reducing procedure time and complexity.

Expandable cage stabilizes catheter navigation while wire pairs enable precise Cartesian hub movement, resolving complex anatomical positioning challenges.

Circuitous tubing and a vented compartment prolong arterial blood flashback observation, reducing operator exposure to high-pressure blood.

Antimicrobial obturator releases agents into fluid to maintain sterility, avoiding complex catheter coating application.

A needle shield assembly uses a latch and locking member to secure the device during operation.

A needle assembly uses a flexible nose extension to collect bodily fluids from a flashback chamber.

Tapered guide assembly provides stable support for sheath introduction, reducing intravascular trauma in tortuous aortoiliac bifurcations.

An optical fiber cures adhesive inside a suction-isolated atrial appendage cavity, eliminating stroke risk without anticoagulation therapy.

An integrated catheter assembly combines a retractable needle with dual lumens for single-point blood access.

Angled sheath tip conforms to tissue surface, reducing trauma and displacement during instrument insertion.

Inflatable balloon coupled to a medical sheath moves along the tube length to anchor the tool, preventing slippage during intravascular procedures.

A medical device uses a rigid cannula-holder and compression spring to retract the needle into the tubular body.

A flexible intrauterine pressure catheter uses a shape memory stiffener to maintain linear insertion configuration.

Segmented needle holders extend reach without flexibility loss, reducing radiation exposure during deep vessel puncturing.

Concentrically curved introducers minimize friction and stress on the anatomical target during precise cardiac implant delivery.

Monolithic plastic spring clips shield needle tips without generating particle migration or scraping vibrations.

Lateral movement aligns the needle with an offset retraction chamber, eliminating manual force and accidental stick risks.

A decompression needle assembly uses a scalpel tip for insertion and a one-way valve to manage airflow.

Spring-driven cannula insertion device automatically withdraws the needle after deployment.

A pivotable hollow needle hub system reorients the piercing instrument to bypass physical barriers.

A transparent needle extension magnifies blood flashback through optical effects to confirm vein entry during venipuncture.

An introducer sheath embeds electrodes and an impedance assessment unit to measure electrical signals across vessel walls.

An expandable flexible electrode assembly unfolds to conform to complex cardiac anatomy.

A catheter delivery system uses movable retaining means to secure a heart valve prosthesis during minimally invasive implantation.

A catheter features a contractible circular region with angled elongated elements for mapping and ablation.

Automatic safety barrier shields needle tips via elastic biasing, preventing accidental sticks and blood-borne pathogen exposure during disassembly.

A safety catheter needle uses a rotating element to lock the cannula tip inside a containment body.

A delivery catheter system uses an inflatable balloon to stabilize the guide catheter for precise transapical puncture.

Curved catheter tips engage fibrous caps in chronic total occlusions, preventing deflection into false lumens.