The AngioJet uses which principle to aid thrombus removal?

The AngioJet uses which principle to aid thrombus removal?

• A. Venturi-Bernoulli principle with low vacuum
• B. Pascal's principle
• C. Archimedes principle
• D. Hooke's law

Answer: (A)

The device relies on the Venturi-Bernoulli principle. By directing high-velocity saline jets through tiny nozzles, the flow accelerates and, according to Bernoulli’s relationship, the static pressure in the fast stream decreases. This creates a localized negative pressure that entrains the thrombus into the catheter and aids its fragmentation and aspiration. In practice, this suction is generated by the jet itself rather than a separate vacuum pump, which is why it’s described as a low-vacuum effect. The other principles don’t describe how thrombus is removed with this device: Pascal’s principle is about pressure transmission in fluids, Archimedes’ principle concerns buoyancy, and Hooke’s law deals with elastic deformation.

The device relies on the Venturi-Bernoulli principle. By directing high-velocity saline jets through tiny nozzles, the flow accelerates and, according to Bernoulli’s relationship, the static pressure in the fast stream decreases. This creates a localized negative pressure that entrains the thrombus into the catheter and aids its fragmentation and aspiration. In practice, this suction is generated by the jet itself rather than a separate vacuum pump, which is why it’s described as a low-vacuum effect. The other principles don’t describe how thrombus is removed with this device: Pascal’s principle is about pressure transmission in fluids, Archimedes’ principle concerns buoyancy, and Hooke’s law deals with elastic deformation.