| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a medical treatment instrument capable of highly accurately measuring a lesion length on a radioscopic image, for accurately and easily selecting and judging an optimum stent. <P>SOLUTION: The medical treatment instrument is provided with a catheter 2 and a guide wire 3, and the catheter 2 and the guide wire 3 respectively have radiopaque three markers M1-M3 and five markers m1-m5 for measuring the length of a stenosing lesion part P. An operator makes liquid flow to the balloon 22 of the catheter 2 to expand the balloon 22, moves the guide wire 3 while looking at perspective images when expanding the balloon 22 or after completing the expansion, and superimposes a shadow image by the marker m2 and the shadow image by the marker M1. A scale S is constituted of a measurement reference shadow image O which is a superimposed shadow image and the other shadow image. Thus, the intervals Z1-Z6 of the scale S are reduced and the lesion length is highly accurately measured while maintaining the flexibility of the guide wire 3 at the center part of a blood vessel diameter direction. <P>COPYRIGHT: (C)2007,JPO&INPIT |
