Patent ID: 7155272
Filing Date: 2006-12-26
Classification: A61B

Abstract:
1. A catheter comprising: an observation portion used for observation of the inside of an organism, a sheath comprising an observation lumen in which said observation portion is disposed and which extends in the direction of insertion into said organism, a first guide wire lumen having a distal end and a proximal end, said first guide wire lumen is disposed substantially in parallel to said observation lumen and said proximal end of said first guide wire lumen is disposed on the distal end side in said insertion direction in relation to said observation portion and through which a guide wire is passed, a second guide wire lumen having a distal end and a proximal end, said second guide wire lumen is disposed on an extension line of said first guide wire lumen and said distal end of said second guide wire lumen is disposed on the proximal end side in said insertion direction in relation to said observation portion and through which said guide wire is passed; said first guide wire lumen and said second guide wire lumen both being disposed on the sheath; the proximal end and the distal end of the first guide wire lumen each possessing an opening, and the proximal end and the distal end of the second guide wire lumen each possessing an opening, the opening at the proximal end of the first guide wire lumen and the opening at the distal end of the second guide wire lumen being spaced apart from one another such that when a guide wire is positioned in both the first guide wire lumen and the second guide wire lumen a portion of the guide wire is located exterior of the sheath; and the proximal end of the first guide wire lumen and the distal end of the second guide wire lumen being positioned relative to one another to permit a guide wire extending between the proximal end of the first guide wire lumen and the distal end of the second guide wire lumen to extend exterior of the sheath in a straight line without bending.