Patent ID: 8740875

Claim:
A method of arresting telescopic endwise relative movement in a medical device between an end portion of an elongate member and an end portion of a tube that receives the end portion of the elongate member, the method comprising the steps of: providing a length of deformable blocking sleeve material; attaching a leading end of the length to either an outer surface of the elongate member or an inner surface of the tube; imparting such relative endwise movement to the elongate member and the tube as will draw the leading end of the blocking sleeve material, followed by its length, into a gap between the elongate member and the tube; and reversing a direction of the relative endwise movement and continuing until the blocking sleeve material length suffers an endwise deformation so as to defeat any further reverse endwise movement, wherein the blocking sleeve material crumples or folds under the reversed relative endwise movement to provide increased friction.