A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/00 (2006.01)
Patent
CA 2618792
The invention relates to a medico-technical device for at least partially introducing into a body passage. Said device comprises an elongate, tubular, flexible internal body (2), an elongate exterior enveloping body (3) which surrounds, at least partially, said internal body (2) on the periphery thereof, and a device (4) for transferring the device (1) from a flexible state to a rigid state and vice-versa. The invention is characterised in that the internal body (2), which is in the form of a double tube (5), comprises an inner tube (6) which forms an inner wall (8) of the internal body (2) and an external tube (7) which forms an external wall (9) of the internal body (2), said external tube (7) surrounding the inner tube (6) in a concentric manner on the periphery thereof. The invention is characterised in that the device (4) for transferring the device (1) from a flexible state into a rigid state and vice-versa is embodied in such a manner that the external tube (7) lengthens in a radial manner by increasing the pressure in an annular shaped intermediate chamber (10) and exerts pressure on the enveloping body (3).
L'invention concerne un appareil médico-chirurgical destiné à être introduit au moins partiellement dans un passage corporel, cet appareil comprenant un corps intérieur (2) flexible tubulaire allongé, un corps enveloppant (3) extérieur allongé entourant au moins partiellement le corps intérieur (2) sur la périphérie de celui-ci, ainsi qu'un dispositif (4) pour faire passer l'appareil (1) d'un état flexible à un état rigide, et inversement. L'invention se caractérise en ce que le corps intérieur (2) se présente sous la forme d'un tube double (5) comprenant un tube intérieur (6) formant une paroi intérieure (8) du corps intérieur (2) et un tube extérieur (7) formant une paroi extérieure (9) du corps intérieur (2), ledit tube extérieur (7) entourant le tube intérieur (6) concentriquement sur la périphérie de celui-ci. L'invention se caractérise par ailleurs en ce que le dispositif (4) servant à faire passer l'appareil (1) d'un état flexible à un état rigide, et inversement, est formé du fait que le tube extérieur (7) s'étend radialement sous l'effet d'une augmentation de pression dans un interstice annulaire (10) et exerce ainsi une pression sur le corps enveloppant (3).
Ridout & Maybee Llp
von Weymarn-Schaerli Alexander
LandOfFree
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