Balloon catheter for hyperthermia treatment

Details Balloon catheter for hyperthermia treatment Balloon catheter for hyperthermia treatment

A - Human Necessities

61

F

A61F 7/12 (2006.01) A61B 18/08 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2205552

Device for carrying out heat treatment, so-called hyperthermia, in a body cavity or duct comprising a catheter having an elongate front part (3) intended for insertion into said cavity or duct provided with a central tube (9) and a flexible and/or elastic balloon (7) surrounding said central tube in a liquid-tight manner, further comprising an axially operating first inlet (11) at the proximal end of the central tube and at least one outlet from the central tube intended for the supply of said medium under pressure to the balloon for the expansion thereof. The device is characterized in that said central tube (9) at its distal end extends at least up to the forward inner wall of the balloon to which it is fixed, said device in connection with the distal end of the central tube (9) being provided with a valve (33; 33') enabling discharge of gas from the interior of the balloon (7) through at least one gas outlet arranged at said distal end.

Dispositif permettant d'administrer un traitement thermique, appelé hyperthermie, dans une cavité ou un passage du corps, qui comprend un cathéter doté d'une partie avant allongée (3) destinée à être introduite dans la cavité ou le passage et pourvue d'un tube central (9) et d'un ballonnet (7) souple et/ou élastique qui entoure le tube central d'une manière étanche aux liquides. Ledit dispositif comprend en outre un premier orifice d'entrée (11) à fonctionnement axial à l'extrémité proximale du tube central et au moins un orifice de sortie du tube central, destiné à alimenter le ballonnet en milieu sous pression pour en provoquer l'expansion. Ledit dispositif est caractérisé par le fait que le tube central (9) s'étend, à son extrémité distale, au moins jusqu'à la paroi interne avant du ballonnet auquel il est fixé, le dispositif en connexion avec l'extrémité distale du tube central (9) étant doté d'une soupape (33, 33') permettant l'évacuation de gaz se trouvant à l'intérieur du ballonnet (7) à travers au moins un orifice de sortie de gaz ménagé au niveau de ladite partie distale.

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