Phonation valve for breathing tube

Details Phonation valve for breathing tube Phonation valve for breathing tube

A - Human Necessities

61

M

A61M 16/04 (2006.01) A61M 16/20 (2006.01) F16K 15/14 (2006.01) F16K 47/00 (2006.01)

Patent

CA 2348899

In accordance with the present invention, a phonation valve (10) which is cooperatively connectable to a breathing tube (18) connected to a patient's airway, includes a valve body (12) having first (14) and second (16) ends through which gas passes into and out of the valve (10). The first end (14) is connectable to the breathing tube (18) for passage of gas between the breathing tube (18) and the valve (10). A valve seat (22) is located within the valve body (12) between the first (14) and second (16) ends. A thin, flexible diaphragm (24) is provided, which is seated against the valve seat (22) when the patient exhales. The diaphragm (24) has a comfort-improving structural feature which can be 1) a shape which is at least partly concave on a side of the diaphragm (24) facing the seat (22), and/or 2) a web (42) of substantially uniform thickness with a plurality of discrete areas of different thicknesses dispersed around the web (42), which are capable of damping resonance vibration of the diaphragm (24) during breathing by the patient.

Selon cette invention, une soupape (10) de phonation pouvant se raccorder à un tube (18) respiratoire pour coopérer avec celui-ci, lui-même raccordé aux voies respiratoire d'un patient, comprend un corps (12) pourvu de première (14) et seconde (16) extrémités par lesquelles un gaz entre et sort de la soupape (10). La première (14) extrémité peut se raccorder au tube (18) respiratoire de sorte que le gaz passe entre le tube (18) respiratoire et la soupape (10). Un siège (22) de soupape est placé dans le corps (12) de soupape entre les première (14) et seconde (16) extrémités. Une membrane (24) flexible, fine est placée contre le siège (22) de soupape lorsque le patient expire. La membrane (24) possède une caractéristique structurale améliorant le confort et qui peut être 1) une forme au moins partiellement concave sur un côté de la membrane (24) opposée au siège (22) de soupape, et/ou 2) une bande (42) d'une épaisseur sensiblement uniforme, pourvue d'une pluralité de zones séparées de différentes épaisseurs et réparties autour de la bande (42) de façon à amortir les vibrations à résonance de la membrane (24) lors de la respiration du patient.

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