Claims
- 1. A catheter for being introduced in a living body over a guidewire and through a working channel of an endoscope, additionally including a viewing channel, to obtain a measurement for determining the length of a stent to be located in a stricture, said catheter comprising:
- A. a first lumen for allowing said catheter to slide over the guidewire and through the stricture,
- B. a radiopaque marker at one end of said catheter for enabling the indication that the one end of said catheter has passed the stricture, and
- C. visual markers formed on said catheter at a plurality of spaced positions extending from the one end thereof, said visual marker at each position having a unique appearance whereby a direct visualization through the endoscope viewing channel of the pattern proximate the stricture provides a stent length measurement.
- 2. Apparatus as recited in claim 1 wherein each marker position comprises at least one visual marker and the arrangement of plural visual markers at a given position is unique.
- 3. Apparatus as recited in claim 2 wherein certain of each of said visual markers has a different color whereby the combination of the color and arrangement provide an unambiguous appearance.
- 4. Apparatus as recited in claim 1 wherein certain of each of said visual markers has a different color to provide an unambiguous appearance.
Parent Case Info
This application is a division of application Ser. No. 08/120,475, filed Sep. 13, 1993, now U.S. Pat. No. 5,427,115.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO8603395 |
Jun 1986 |
WOX |
Divisions (1)
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Number |
Date |
Country |
Parent |
120475 |
Sep 1993 |
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