Laryngeal mask airways and their manufacture

Details Laryngeal mask airways and their manufacture Laryngeal mask airways and their manufacture

A - Human Necessities

61

M

A61M 16/06 (2006.01) A61M 16/04 (2006.01)

Patent

CA 2219860

Known laryngeal mask assemblies have a mask portion of elliptical shape that is inflatable at the patient end to seal in the region of the hypopharynx. In the present invention the assembly has a mount and an inflatable member attached to the mount. The inflatable member is formed by heat bonding together opposite walls of a flat balloon and at the same time cutting an aperture through the walls, so as to form a central web within an outer inflatable ring. The central web is attached to a concave surface on the forward surface of the mount with the aperture in the web aligned with an opening in the mount.

Des masques laryngiens connus comprennent une partie de forme elliptique, pouvant être gonflée à l'extrémité malade de façon à sceller la région de l'hypopharynx. Dans la présente invention, le masque possède une monture, à laquelle est fixé un élément gonflable. L'élément gonflable est formé par la chaleur qui lie ensemble les parois opposées d'un ballon plat, tout en coupant une ouverture à travers les parois, de façon à former une bande centrale à l'intérieur d'un anneau gonflable externe. La bande centrale est fixée à la surface concave sur la partie antérieure de la monture, l'ouverture dans la bande étant alignée sur une ouverture dans la monture.

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