Cannulas TRIZ Cases

An endoscopic tool with a rotating cutting assembly and integrated aspiration channel removes necrotic tissue from the pancreas.

Segmented optical fibers track tissue deformation without invasive pins, preventing soft tissue damage from sharp surgical instruments during procedures.

A resilient cleaning element within a trocar housing contacts the scope distal end to remove debris without breaking sterility.

A self-expanding cannula uses a braided-wire body to transition from a compressed insertion state to an expanded fluid conduit.

Circumferential halo irrigation openings on a flexible electrode tip distribute cooling fluid to prevent tissue damage during radio frequency ablation.

Expanding cannula leaves stabilize against bone surfaces to prevent unintentional movement, while integrated LEDs eliminate shadows for clear visualization.

Active feedback control regulates pump inflow to maintain stable organ pressure and clear visualization during tissue resection.

A flexible tractor region inverts over the catheter tip to pull clots distally, reducing tissue damage and jamming risks during removal.

A unitary endoscopic vessel harvesting device integrates a conical tip and cutting unit to seal and cut blood vessels.

A percutaneous ventricular assist device uses a septal anastomosis to route oxygenated blood from the left atrium directly to the aorta.

A clear view cannula uses a counter-pressure ring to stabilize angular position during minimally invasive surgery.

A percutaneous transabdominal port uses an internal retainer that converts between narrow and wide configurations to anchor securely within a hollow organ.

Connecting rods and a spring press the optical bulb against the port body, preventing adhesive failure under external forces.