Pneumatic device for washing, drying and disinfection endoscopes and methods for detecting obstructions and leaks in an endoscope

A pneumatic device for washing, drying, and disinfecting device canals, comprising:

• a cylinder comprising:
• a chamber with a inlet and an outlet, said inlet configured to connect with a first fluid source;
• a piston rod connected to the outlet of the chamber;
• and
• a plunger arranged on the piston rod, said plunger being located inside the chamber;
• a piston connected to one end of the piston rod;
• a container (9) with an inlet and an outlet, said inlet being aligned with the outlet of the chamber of the cylinder and wherein the piston is located inside the container;
• and,
• a multi-way valve with four connection ports, a first connection port (13) configured to connect to the outlet of the container, a second connection port configured to connect to a second fluid source;
• a third connection port configured to connect to a canal of a device;
• and a fourth connection port configured to connect to the first fluid source,
• wherein the inlet of the chamber allows the entry of a fluid coming from the first fluid source into the chamber generating a fluid pressure difference inside the chamber to generate an up and down movement of the plunger;
• wherein, the multi-way valve in a first position allows the passage of fluid from the second fluid source into the container, in a second position the multi-way valve allows the passage of fluid from the container into the device canal, and in a third position the multi-way valve allows the passage of fluid from the first fluid source into the device canal (40) and
• wherein the multi-way valve is a mechanical multi-way valve with balls, the interior of the mechanical multi-way valve comprising canals, which are sealed with balls that move according to the current of the fluid flow entering through the connection ports, allowing the fluid flow to move in one direction depending on the position of the balls.