Drainagekatheter

摘要

A lockable sleeve drainage catheter is disclosed for percutaneous insertion into a patient and drainage of fluid therefrom. The drainage catheter includes a flexible distal end (105) that is preformed for retaining the distal end (105) of the catheter that is inserted in the patient. For insertion, the distal end (105) is straightened with the use of a stiffening cannula that is inserted through the hollow passageway (107) of the catheter. When the catheter is inserted in the patient, the stiffening cannula is removed, and a flexible tension member (121) positioned within the passageway (107) of the catheter is drawn to position the distal end (105) in the desired retention configuration. A lockable sleeve (110) positioned at the proximal end (106) of the catheter draws the flexible tension member (121) through the passageway (107) of the elongated member tube (104) to position the distal end (105) in the retention configuration. The catheter also includes a locking collar (114) at the proximal end (106) of the elongated member tube (104) having an annular recess (119) formed therein. The distal end (111) of the lockable sleeve (110) includes an annular step (120) for engaging the recess (119) of the collar (114) and locking the sleeve (110) in a fixed position relative to the elongated member tube (104) of the catheter. When fully extended and locked, the sleeve (110) and elongated member (104) form a fluid tight interconnection. A Luer lock connector (124) is affixed to the proximal end (112) of the sleeve (110) for connection to a drainage collection system.