A clip device delivery apparatus for a gastrointestinal endoscope, comprising: a haemostatic clip device that is suitable to slideably fit through a working channel of said elongate gastrointestinal endoscope, the clip device being detachably operatively coupled to an elongate deployment device, the clip device comprising at least three arms movable between a radially expanded position and a closed position (127"); characterized in that the clip delivery apparatus further comprises: a detachable protective cap comprising a proximal tube mounting section that detachably fits over a distal end portion of said gastrointestinal endoscope, the detachable protective cap further comprising a distal section, the proximal tube mounting section comprising a lumen and the distal section comprising a clip arm receiving chamber configured to extend distal to said gastrointestinal endoscope distal end portion and that is configured to accommodate radial expansion of the clip arms; whereby the proximal tube mounting section lumen is configured to detachably receive a distal end portion, of said gastrointestinal endoscope,; and in that the clip delivery apparatus is configured so as to enable tissue to be suctioned into said clip arm receiving chamber and to enable the clip device to be deployed about said tissue within the clip arm receiving chamber. a haemostatic clip device that is suitable to slideably fit through a working channel of said elongate gastrointestinal endoscope, the clip device being detachably operatively coupled to an elongate deployment device, the clip device comprising at least three arms movable between a radially expanded position and a closed position (127"); characterized in that the clip delivery apparatus further comprises: a detachable protective cap comprising a proximal tube mounting section that detachably fits over a distal end portion of said gastrointestinal endoscope, the detachable protective cap further comprising a distal section, the proximal tube mounting section comprising a lumen and the distal section comprising a clip arm receiving chamber configured to extend distal to said gastrointestinal endoscope distal end portion and that is configured to accommodate radial expansion of the clip arms; whereby the proximal tube mounting section lumen is configured to detachably receive a distal end portion, of said gastrointestinal endoscope,; and in that the clip delivery apparatus is configured so as to enable tissue to be suctioned into said clip arm receiving chamber and to enable the clip device to be deployed about said tissue within the clip arm receiving chamber. a detachable protective cap comprising a proximal tube mounting section that detachably fits over a distal end portion of said gastrointestinal endoscope, the detachable protective cap further comprising a distal section, the proximal tube mounting section comprising a lumen and the distal section comprising a clip arm receiving chamber configured to extend distal to said gastrointestinal endoscope distal end portion and that is configured to accommodate radial expansion of the clip arms; whereby the proximal tube mounting section lumen is configured to detachably receive a distal end portion, of said gastrointestinal endoscope,; and in that the clip delivery apparatus is configured so as to enable tissue to be suctioned into said clip arm receiving chamber and to enable the clip device to be deployed about said tissue within the clip arm receiving chamber.