Blood withdrawal device

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/145 (2006.01) A61B 5/15 (2006.01) A61M 5/34 (2006.01)

Patent

CA 2471408

The invention relates to a device for accommodating body fluids, comprising a small tube (1) that, at its front end, supports a dome (10) having a pierceable stopper for a guide sleeve (2), which can be pushed onto the dome (10) and which, on the side facing the dome, has a cannula (5) with a valve rubber (3) and, on the side facing away from the dome, has a connecting piece or the front part of a double cannula. The guide sleeve (2) is made of a rigid material and is provided, at its front end located outside of a grip area (8) provided for normal handling, with a flexible section (6). The dome (10) comprises, in a connecting area, a diameter that is greater than the inside diameter of the guide sleeve (2), whereby when the device is assembled for use, the larger dome diameter widens the flexible section (6) that surrounds the connecting area of the dome (10) in a non-positive manner in order to obtain a retention force.

L'invention concerne un dispositif récepteur de liquides corporels, comprenant un tube de prélèvement (1) porteur, à son extrémité avant, d'un dôme (10) muni d'un bouchon perçable pour une douille de guidage (2) à emboîtement sur le dôme (10) présentant, du côté tourné vers le dôme, une canule (5) munie d'un caoutchouc soupape (3) et, du côté opposé au dôme, un raccord ou l'élément avant d'une double canule. La douille de guidage (2) est en un matériau rigide, résistant à la déformation et présente, à son extrémité avant, en dehors d'une zone de préhension (8) utilisable en position normale, une section déformable (6), cependant que le dôme (10) présente, dans une zone de jonction, un excédent de diamètre par rapport au diamètre intérieur de la douille de guidage (2), de sorte que le diamètre supérieur du dôme entraîne l'élargissement, en position assemblée d'utilisation, de ladite section déformable (6) qui entoure, avec liaison par adhérence totale, la zone de jonction du dôme (10), en vue d'obtenir la force de retenue.

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