Cannulas TRIZ Cases

Segmented components and nested slots enable precise positioning within bodily passages, reducing trauma from repeated insertions.

Disposable adhesive labels replace heavy metal tags to eliminate tissue irritation while maintaining accurate animal tracking.

Segmented probe with disposable shaft and universal mount enables port-based surgery navigation.

A slider with dead and sensing zones decouples endoscope movement from tool motion to stabilize the visual field during surgery.

Multi-lumen cannula with pump circulation removes electrocautery smoke while maintaining pneumoperitoneum pressure.

An articulated stiffening cannula uses a flexible hinge to adjust the tube angle, accommodating anatomical variations during transjugular liver access.

Gelatin tyramine hydrogel retains BMP2 to prevent leakage and promote homogeneous bone regeneration.

Nested arm segments with dedicated control wires enable precise tissue manipulation through a single natural orifice entry.

Automated cutting system balances retractor torque and regulates body cavity gas flow to eliminate tissue seeding risks during laparoscopic procedures.

A tubular extraction device uses a longitudinally movable operational head to engage and secure vessel ends.

A laparoscopic seal assembly uses an iris seal and detachable attachment ring to create a gas-tight barrier around the surgeon's wrist.

Stabilizing element prevents balloon kinking while flexible trocar sleeve absorbs movement forces to maintain patient safety during long-term insertion.

A magnetized locking element positions a surgical sleeve holder using magnetic force instead of mechanical springs.

A serpentine cutting blade adapts to balloon expansion through undulating geometry.

Elastic press portions secure circuit boards to surgical instrument bases, eliminating bolt assembly complexity and vibration risks.

Oblique water spray channels in endoscope sheath caps create multi-angle flushing to separate broken calculi that axial jets cannot expel.

Nested side-pointing viewing elements in the endoscope tip resolve packing complexity while expanding field of view for better pathological detection.

An elongate shaft with a nested endoscope channel enables visualization around anatomical obstructions without removing structures or using fluoroscopy.

Intermediary protective film distributes retraction forces across soft tissues, preventing necrosis during minimally invasive surgery.

Articulating surgical instruments enable precise triangulation through single-site access ports.

Nested add-on sheath collapses for low-profile insertion then expands at the target site, reducing vascular access sites and procedure risk.

Graduated wall thickness allows the distal region to expand into a toroid shape, anchoring the cannula in tissue while maintaining a gas-tight seal.

Ratchet and pawl lock mechanism secures adjustable iris valve opening to maintain pneumoperitoneum pressure during laparoscopic surgery.

Segmented disposable operative cannulas clip onto reusable endoscopes, reducing contamination risks and manufacturing costs.

Segmented passages in a rotatable nozzle direct fluid to specific nasal areas, eliminating haphazard spray and reducing wastage.

Sensor-driven controllers automatically adjust end effector angles to resolve manual precision trade-offs in laparoscopic surgery.

Balloon catheters isolate thrombi to enable controlled suction fragmentation, reducing embolism risks without lytic agents.

A length adjustable cannula uses a screw-threaded outer support plate to move along the main body for precise positioning.

A hemostasis bypass valve actuator transitions a tube to traverse the valve seat.

A syringe-based bladder evacuation system replaces manual pump bulbs with precise plunger control, eliminating hand strength variability in fluid dispensing.

A seal housing suspended by a flexible tether extends beyond the retractor to allow angular instrument movement.

A sensor injector uses a spring-loaded ejection element to pull the cannula out of the patient automatically after insertion.

A manual thoracoscopic irrigation cannula uses a bowl and hollow leg to deliver fluid.

Connecting the cannula guard to the adhesive liner enables single-step removal, reducing needle-stick risks and preventing adhesive damage during insertion.

An annular body wiper blocks bodily fluids from the friction interface, preventing retropulsion and over-insertion of the surgical access device.

A medical access port valve assembly uses a flexible diaphragm to suspend a central member for instrument insertion.

An injection pistol integrates an RFID module and CPU to identify animals and record treatment data automatically.

A tissue engagement device tensions the pericardium to guide an access cannula through the layer.

Embedded LEDs in an opaque blade provide illumination while resolving light transmission trade-offs via local quality differentiation.

A large bore catheter employs a guiding rail to reach the central pulmonary artery, reducing procedure complexity and blood loss during thrombectomy.

Lateral deflection of the side catheter guide stabilizes the septum penetrator against cardiac motion during transseptal puncture.

Segmented seal plates and a side outlet reduce internal handle pressure to atmospheric levels, preventing liquid spray onto operators.

Nested shafts enable instrument passage through grasping jaws, reducing incisions and infection risk.

A rotatable thrombus engagement tool uses a helical thread tip to mechanically capture clots via manual handle rotation.

Dual actuators and springs lock tool and sheath positions, reducing procedure time.

A trocar lock assembly uses a cam lever to compress an elastomeric block against surgical instruments for secure positioning.

Pneumatic actuation replaces manual syringe force, reducing operator fatigue while maintaining precise dosage control during rapid vaccination cycles.

Alternating normal and reverse concave channels in a seamless trocar seal membrane reduce frictional resistance and stick-slip during instrument insertion.

Ultrasonic surgical tool selectively removes spinal tissue via frictional abrasion to enlarge neural foramina.