| 摘要 |
<p num="1"><br/><br/><br/>An introducer apparatus includes an outer sleeve (12) and an inner cannula <br/>(20) received within the lumen (15) of the outer sleeve. The outer sleeve has <br/>a profile such that at least a portion of the distal end of the outer sleeve <br/>tapers in the distal direction at an angle not exceeding about 2.5~ relative <br/>to a longitudinal axis of the apparatus. The distal open end of the outer <br/>sleeve has a wall thickness not exceeding about 0.003 inch, and is sized such <br/>that a first wire guide is receivable therethrough. The inner cannula includes <br/>a tapered distal end portion. The inner cannula distal open end is sized such <br/>that a second wire guide is receivable therethrough, and the first wire guide <br/>is not receivable therethrough. The tapered distal portion of the inner <br/>cannula extends distal to the distal open end of the outer sleeve, such that a <br/>generally smooth diametrical transition is provided between the outer sleeve <br/>tapered portion and the open distal end of the inner cannula.<br/></p> |
