hold in vivo target specimens at a distal end while the catheter grips the tissue by suction blasts of high pressure solution strip from the tissue and suspend clusters of cells which are ready for analysis the clusters are entrained in the solution and are recovered in a cell collection trap at the proximal end traps are removed replaced or rotated out of and into alignment with a trap connector to accommodate new target specimens a switch controls fluid flow intensity and frequency of fluid jet blasts of the solution the fluid jet catheter paired with a fiber optic system in an endoscope allows viewing of areas surrounding the distal end of the catheter application_number US 64550200 A description the fluid jet catheter of the present invention uses high velocity saline jets to create a low pressure bernoulli effect for tissue entrapment dissection by high speed jets and retrieval of targeted tissue cells providing a novel approach for the diagnosis and treatment of pathology using a flexible catheter endoscope flexible endoscopes usually have at least one lumen employed for the management of endoscopic pathology the fluid jet catheter of the present invention uses the same port as do other techniques and extends from.