Source: http://www.google.com/patents/US6071234?dq=7,328,163
Timestamp: 2017-06-25 00:00:41
Document Index: 121313251

Matched Legal Cases: ['art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3']

Patent US6071234 - Self-propelled colonoscope - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA self-propelled colonoscope comprises control part and an insertion tube including a distal part, a bending part, and a flexible part. The distal part is equipped with an image pickup element. Two or more endless belts each of which is circular in cross section extend along the surface of the flexible...http://www.google.com/patents/US6071234?utm_source=gb-gplus-sharePatent US6071234 - Self-propelled colonoscopeAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6071234 APublication typeGrantApplication numberUS 09/207,424Publication dateJun 6, 2000Filing dateDec 8, 1998Priority dateJun 3, 1998Fee statusPaidPublication number09207424, 207424, US 6071234 A, US 6071234A, US-A-6071234, US6071234 A, US6071234AInventorsMasazumi TakadaOriginal AssigneeTakada; MasazumiExport CitationBiBTeX, EndNote, RefManPatent Citations (5), Referenced by (95), Classifications (16), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetSelf-propelled colonoscope
FIG. 4 shows a section view of the flexible part 3 of the self-propelled colonoscope of the present invention. The flexible part 3 is equipped with two or more endless belts 13 along surfaces in the longitudinal direction of the colonoscope. When the flexible part 3 is equipped with a single endless belt, the colonoscope is not provided with a smooth self-propelling property. As long as the endless belts 13 are placed along the surface of the flexible part 3 without overlapping with each other, the larger the number of the endless belt, the less the possibility of injuring the surface of mucous membranes of the colon and the better the self-propelling property. The endless belt 13 is held by guide hooks 14 arranged on the outer surface of the flexible part 3. Each guide hook 14 has a diameter slightly larger than the diameter of the endless belt and has an arc shape which is greater than 180°, thereby covering more than one half of the circumferential length of the circle of the cross section of the endless belt. When the guide hook 14 has an arc shape which is equal to or smaller than 180°, thereby covering one half or less of the circumferential length of the circle of the cross section of the endless belt 13, the guide hook 14 cannot hold the endless belt 13. The guide hooks 14 are arranged on the outer surface of the flexible part 3 with a distance ranging from 0 to 90 cm, preferably 0 to 20 cm, more preferably 0 to 6 cm, from each other in the longitudinal direction of the flexible part 3.
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