the present invention provides a device comprising : a proximal end of the device comprises an inner first conduit within the lumen of an outer second conduit , a distal end of the device comprises the outer second conduit in fluid communication with a third conduit and a fourth conduit through a y - shaped , t - shaped or u - shaped junction , the third conduit terminates in a triggering mechanism , and the fourth conduit is in fluid communication through a one - way valve , wherein fluid can only convey in a direction from the fourth conduit towards the second outer conduit , with an aperture .