| 摘要 |
The invention relates to a respirator comprising a combination of a Venturi tube and an expiration valve. A Venturi tube (826) is displaceably accommodated in a hollow main body (817), the Venturi tube (826) and the main body (817) being designed at one end as an expiration valve (834 to 837), and a nozzle (851) connected to a diaphragm (861) being located on the other end of the Venturi tube (826), so that the expiration valve (834 to 837) closes and opens in connection with the action of a helical spring (841), in correspondence with the gas pulses supplied for the respiration. <IMAGE> |
