Source: http://www.google.es/patents/US6071234?hl=es&ie=ISO-8859-1&dq=flatulence
Timestamp: 2014-04-25 06:51:40
Document Index: 483185270

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

Patente US6071234 - Self-propelled colonoscope - Google PatentesB�squeda Im�genes Maps Play YouTube Noticias Gmail Drive M�s »Iniciar sesi�n B�squeda avanzada de patentesPatentesA 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.es/patents/US6071234?utm_source=gb-gplus-sharePatente US6071234 - Self-propelled colonoscope B�squeda avanzada de patentes N�mero de publicaci�nUS6071234 ATipo de publicaci�nConcesi�n N�mero de solicitudUS 09/207,424 Fecha de publicaci�n6 Jun 2000 Fecha de presentaci�n8 Dic 1998 Fecha de prioridad3 Jun 1998TarifaPagadas N�mero de publicaci�n09207424, 207424, US 6071234 A, US 6071234A, US-A-6071234, US6071234 A, US6071234A InventoresMasazumi Takada Cesionario originalTakada; MasazumiExportar citaBiBTeX, EndNote, RefManCitas de patentes (5), Citada por (44), Clasificaciones (15), Eventos legales (3) Enlaces externos: USPTO, Cesi�n de USPTO, EspacenetSelf-propelled colonoscopeUS 6071234 A Resumen A 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 part from a guide hole positioned at a distance of less than 3 cm from the distal end of the flexible part to the control part. The endless belts are driven by a driving mechanism located at the control part. They are guided from the inner surface of the flexible part to the outer surface through the guide hole. The endless belts are held by guide hooks which are arranged on the outer surface of the flexible part. The length of each endless belt is equal to about 105% to 150% of an imaginary endless belt fully tensioned and extending from said control part to a respective guide hole. The colonoscope can be easily, safely and rapidly inserted into the colon without causing pain to a patient.
I claim: 1. A self-propelled colonoscope comprising: a control part, and an insertion section which comprises a distal part, a bending part, and a flexible part having a throughbore and an outer surface comprising a plurality of guide hooks, each guide hook having an arc shape which is greater than 180 flexible part and said distal part, and said flexible part extending between said control part and said bending part, drive means located at said control part for driving at least two endless belts each of which is circular in cross section, each endless belt extending between said control part and a respective guide hole of a plurality of guide holes, each guide hole extending through said flexible part from said outer surface to said throughbore, each guide hole being positioned less than 3 cm from an interface of said bending part and said flexible part, each endless belt extending within said flexible part in said throughbore from said control part to a respective guide hole and then extending external of said flexible part along said outer surface through respective guide hooks of said plurality of guide hooks from a respective guide hole back to said control part, the length of each endless belt being equal to about 105% to 150% of an imaginary endless belt fully tensioned and extending from said control part to a respective guide hole.
SUMMARY OF THE INVENTION An object of the present invention therefore is to produce a self-propelled colonoscope which can be rapidly, easily and safely inserted into a colon without giving pain to a patient.
(1) A self-propelled colonoscope comprising a control part and an insertion section which comprises a distal part, a bending part and a flexible part. The distal part is equipped with an image pickup device or a bundle of optical fibers which provides a return image guide, and a bundle of optical fibers which provides light guides for illumination. The flexible part is equipped with two or more endless belts. In other words, the self-propelled colonoscope of the present invention can be automatically advanced in the colon by driving the endless belts. Each of the endless belts is circular in cross section and extends along the surfaces of the flexible part in an area ranging from a position of 0 to 3 cm from the distal end of the flexible part to the control part. Each endless belt is driven by a driving mechanism located at the control part, and is transferred from the inner surface of the flexible part to the outer surface through a guide hole formed at a position of 0 to 3 cm from the distal end of the flexible part. Each endless belt is held by guide hooks. These guide hooks are attached to the outer surface of the flexible part and have an arc shape which is greater than 180 endless belt is equal to about 105% to 150% of what the length would be when the endless belt is fully tensioned and extends from the driving mechanism located at the control part to the guide hole; and
BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described with reference to the accompanying drawing, wherein:
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 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 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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