Patent ID: 8465295

Claim:
A fluid percussion system for modeling penetrating brain injury, comprising; a pneumatic cylinder assembly comprising a pneumatic piston and a piston rod at an end of the pneumatic cylinder assembly; a hydraulic cylinder assembly comprising a hydraulic piston and a piston rod at an end of the hydraulic cylinder assembly, wherein the end of the pneumatic cylinder assembly is detached from the end of the hydraulic cylinder assembly, wherein the hydraulic cylinder assembly is actuated by the pneumatic cylinder assembly to produce a hydraulic pulse of pressurized fluid, for hydraulically inflating a balloon that simulates a penetrating device; and a pipetting needle assembly, wherein the piston rod of the pneumatic cylinder assembly is opposite of the piston rod of the hydraulic cylinder assembly; wherein the end of the pneumatic cylinder assembly is configured to strike the end of the hydraulic cylinder assembly for the actuating of the hydraulic piston when pressurized gas is delivered to the pneumatic cylinder assembly, the striking of the piston rod of the pneumatic cylinder assembly with the piston rod of the hydraulic cylinder assembly producing the hydraulic pulse, and wherein the pipetting needle assembly is provided the hydraulic pulse of the pressurized fluid.