A diagnostic method for establishing food...

A - Human Necessities – 61 – B

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A61B 10/00 (2006.01) A61B 5/00 (2006.01) A61K 49/00 (2006.01) G01N 33/569 (2006.01) G01N 33/68 (2006.01) G01N 33/88 (2006.01)

Patent

CA 2191768

An allergy-diagnosing method comprising analyzing a sample that has been taken rectally from the large intestine of a patient who is suspected of being allergic, after having provoked the mucous membrane of the patient's large intestine rectally with an allergen against which the suspected allergy of the patient is directed. The method is characterized by: (a) taking the sample in the lumen of the large intestine; (b) determining an inflammation marker in the sample; and (c) taking an elevated marker quantity (elevated release) as an indication that the patient is allergic to the allergen concerned. The invention also relates to an instrument for rectal insertion into the rectum. The instrument is characterized in that it has an expandable part which surrounds a central channel that opens out on each side of the expandable part, and a separate channel through which expansion of the expandable part can be controlled such that when the instrument is applied in the rectum, the outer wall of the expandable part will be in direct contact with the mucous membrane of the rectum; and in that a diffusible allergen and optionally also a receptor for an inflammation marker is rare present on the outer defining surface of the expandable part.

Procédé servant à diagnostiquer une allergie et consistant à analyser un échantillon prélevé par voie rectale dans le gros intestin d'un patient susceptible d'être allergique, après avoir mis en contact, par voie rectale, la membrane muqueuse du gros intestin avec un allergène contre lequel est dirigée l'éventuelle allergie du patient. Ce procédé consiste à: (a) prélever l'échantillon dans la lumière du gros intestin; (b) déterminer un marqueur d'inflammation dans l'échantillon; (c) interpréter une quantité importante de marqueur (libération importante) comme une indication que le patient est allergique à l'allergène. L'invention concerne également un instrument s'introduisant par voie rectale. L'instrument est caractérisé par le fait qu'il possède une partie dilatable entourant un canal central s'ouvrant de chaque côté de la partie dilatable, ainsi qu'un canal séparé à travers lequel on peut commander la dilatation de la partie dilatable, de telle manière que, quand on applique l'instrument au rectum, la paroi extérieure de la partie dilatable sera en contact direct avec la membrane muqueuse du rectum, ainsi que par le fait qu'un allergène diffusible et, éventuellement, un récepteur du marqueur d'inflammation, sont présents sur la surface extérieure de la partie dilatable.

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