Treatment device for treating a side branch of a vessel and method for positioning a stent in a side branch

摘要

A treatment device (16C) for treating a treatment site (14) of a vessel (12) includes a tubular shaft (430), a first passageway (434), and a second passageway (436). The shaft (430) includes a distal shaft region (430A) that is sized and shaped to fit within the vessel (12) and a proximal shaft region (430B) that is used to move the distal shaft region (430A) in the vessel (12). The first passageway (434) receives a first guide wire (16A) and extends along at least a portion of the shaft (430). The first passageway (434) includes a first passageway inlet (434A) that receives the first guide wire (16A) and a first passageway outlet (434B). The first passageway inlet (434A) is positioned between the distal shaft region (430A) and the proximal shaft region (430B). The first passageway outlet (434B) is positioned near the proximal region (430B). The second passageway (436) receives a second guide wire (16B) and extends along the shaft (430). The second passageway (436) includes a second passageway inlet (436A) that receives the second guide wire (16B) and a second passageway outlet (436B). The second passageway inlet (436A) is positioned at the distal shaft region (430A), and the second passageway outlet (436B) is positioned near the proximal shaft region (430B). With this design, the two guide wires (16A), (16B) and the treatment device (16C) can be used to position a stent (18) at a treatment site (14) that is located at an intersection of an angled side branch (12B) and a main branch (12A) of the vessel (12).