Medical devices for delivering fluid

A device for delivering a treatment fluid via an endoscope, the device comprising:

• a catheter comprising a distal end, a first lumen, and a second lumen, each lumen extending along a longitudinal axis of the catheter;
• a first gasket movably positioned within the first lumen;
• a second gasket movably positioned within the second lumen;
• and
• a nozzle positioned on the distal end of the catheter.

A device for delivering a treatment fluid, the device comprising:

• a catheter having a lumen a distal end;
• a coil wound radially around or within a wall of a portion of the catheter;
• a magnetic gasket movably positioned within the lumen of the catheter, wherein the gasket comprises:
• a distal end having a first diameter,
• a proximal end having a second diameter that is greater than the first diameter, and
• a body connecting the distal end and the proximal end, wherein when an electric current is applied to the coil, the electric current generates a magnetic field that causes the magnetic gasket to move within the catheter.