A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 39/00 (2006.01) A61M 16/04 (2006.01) A61M 25/04 (2006.01)
Patent
CA 2423333
The invention refers to a device for fixing a tube member (1) in a cavity (2) of a patient. The device includes a body (3), which surrounds the tube member and has a casing (4) that at least partly forms an inner space (5). The body (3) is expandable by supplying a fluid to the inner space in such a way that the fluid in the inner space has a working pressure. Furthermore, the body (3) has, in a non-expanded state, a relatively small outer extent, which permits the introduction into said cavity (2), and in an expanded state, a relatively large outer extend, which permits fixing in said cavity by abutment with a contact pressure against a tubular wall (7) of the cavity. In order to ensure a tight abutment against the wall (7) of the cavity, the body (3) has such a geometrical shape that the contact pressure is substantially constant independent of variations of the working pressure within a normal working range.
La présente invention concerne un dispositif servant à fixer un élément tubulaire (1) dans une cavité (2) chez d'un patient. Ledit dispositif comprend un corps (3) qui entoure l'élément tubulaire, et une enveloppe (4) qui forme au moins partiellement un espace interne (5). Le corps (3) peut s'étendre grâce à l'apport d'un liquide dans l'espace interne de sorte que le liquide exerce une pression active dans l'espace interne. De plus, le corps (3) a, dans un étant non étendu, des dimensions externes relativement restreintes, ce qui permet l'introduction dans ladite cavité (2), et, à l'étant étendu, des dimensions externes relativement importantes, ce qui permet la fixation dans ladite cavité par appui avec un pression de contact contre une paroi tubulaire (7) de la cavité. Afin de garantir un ajustement serré contre la paroi (7) de la cavité, le corps (3) a une forme géométrique telle que la pression de contact est sensiblement constante indépendamment des vibrations de la pression active dans une gamme de fonctionnement normal.
Flodin Bjorn
Lesperance & Martineau S.e.n.c.
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