An indwelling needle, specifically a corrugated tube-type telescoping indwelling needle. Constituent elements of same are such that: a collar (A) is slidingly mounted within a core cavity of an operating handle, the tail end of a corrugated tube is fixedly connected to the collar (A), a stopper structure is arranged at the front end of the core cavity of the operating handle for preventing the collar (A) from slipping out from the core cavity of the operating handle, and a stepped section for insertion into the core cavity of the operating handle is provided at the rear section of a connecting plug. The advantages are: in a pull-open process when using a pouch component, two ends are allowed to slide within the connecting plug and an operating handle-shaped cavity, thereby fully utilizing the spaces of the connecting plug and of the core cavity of the operating handle, thus allowing the length of the pouch component to be significantly shortened, and, during assembly, this allows for compression and folding to a relatively short length, while the two ends also can be abutted against the connecting plug and the bottom surface of an inner cavity of the operating handle, thus the entire indwelling needle can be relatively short in length when assembled, thereby facilitating a piercing operation. Great overall rigidness is provided, while operation is convenient.Linvention concerne une aiguille à demeure, en particulier une aiguille à demeure télescopique de type tube ondulé. Les éléments constitutifs de laiguille sont tels que: un collier (A) est monté de manière coulissante dans une cavité centrale dune poignée de manoeuvre, lextrémité de bout dun tube ondulé est connectée de manière fixe au collier (A), une structure darrêt est disposée à lextrémité avant de la cavité centrale de la poignée de manoeuvre pour empêcher le collier (A) de sortir de la cavité centrale de la poignée de manoeuvre, et une section étagée destinée à linsertion dans la cavité centrale de la poi
