| 摘要 |
A medical device includes a shaft having an elongated inner tubular member a nd an elongated tubular reinforcing member disposed over a portion of the inner tubular member. In some embodiments, the reinforcing member is disposed abou t a proximal portion of the inner tubular member such that a distal portion of the inner tubular member is free from the reinforcing member. In some embodiments, the at least a portion of an outer surface of the inner tubular member is spaced from an inner surface of the reinforcing member. In some embodiments, the shaft can include a tip structure disposed on the distal portion of the inner tubular member. In some such embodiments, reinforcing member has a distal end, and the tip structure is disposed on the distal portion of the inner tubular member adjacent the distal end of the reinforci ng member. Additionally, in some embodiments, the reinforcing member can includ e a plurality of apertures defined therein, for example, to enhance the flexibility or other such characteristics of all of portions of the reinforcing member. |
