Sound absorber for a respirator

Details Sound absorber for a respirator Sound absorber for a respirator

1998-11-19

2000-09-05

Weiss, John G.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820714, 128912, A61M 1600

Patent

active

061127450

ABSTRACT:
The present invention relates to a sound absorber for a respirator comprising a mask, breathing devices, a connecting tube and at least one carbon dioxide outlet. The sound absorber (16) essentially consists of an inner pipe (22) and an outer tube (24) extending at least partially over it. The inner tube (22) is provided with at least one essentially radially extending through channel (38) which runs into the annular channel (40) which extends axially between the inner pipe (22) and the outer pipe (24) and has a constant annular width. (FIG. 3).

REFERENCES:
patent: 4281652 (1981-08-01), Miller
patent: 4463755 (1984-08-01), Suzuki
patent: 5222486 (1993-06-01), Vaughn
patent: 5284134 (1994-02-01), Vaughn et al.
patent: 5315991 (1994-05-01), Teves
patent: 5538002 (1996-07-01), Boussignac et al.
patent: 5582166 (1996-12-01), Lee
patent: 5937851 (1999-08-01), Serowski et al.
patent: 5957898 (1999-09-01), Jepson et al.

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