(19)
(11) EP 2 080 474 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
21.10.2009 Bulletin 2009/43

(43) Date of publication:
22.07.2009 Bulletin 2009/30

(21) Application number: 09000317.9

(22) Date of filing: 12.01.2009
(51) International Patent Classification (IPC): 
A61B 5/107(2006.01)
 G01B 5/12(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 15.01.2008 JP 2008006282

(71) Applicant: Olympus Medical Systems Corp.
Tokyo 151-0072 (JP)

(72) Inventors:
  • Sakai, Masato
    Shibuya-ku, Tokyo (JP)
  • Tonomura, Masatoshi
    Shibuya-ku, Tokyo (JP)

(74) Representative: von Hellfeld, Axel 
Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2
81541 München
81541 München (DE)

   


(54) Internal diameter measurement device


(57) The internal diameter measurement device (1) is inserted into a cavity to measure an internal diameter thereof. The internal diameter measurement device includes: a tubular sheath (2) inserted into the cavity; a balloon (3) which is provided on a distal end portion of the sheath, and is capable of expanding by supplying a fluid to an inner portion thereof; a linear reference member (4) having a first end portion (4A) fixed to the distending portion or the distal end portion of the insertion portion, and a second end portion (4B) moving towards the distal end of the insertion portion in conjunction with the expansion of the distending portion; and a measuring portion (9) which is provided in a proximal end portion of the insertion portion and is capable of confirming the position of the second end portion of the reference member. This internal diameter measurement device enables accurate measurement irrespectively of dimensions of a pipeline to be measured.