US 12,268,820 B2
Non-hysteretic oxygen supply respirator system
Zhe Liu, Shaoyang (CN); Lei Zhou, Shaoyang (CN); Congneng Tang, Shaoyang (CN); Qichang Zheng, Shaoyang (CN); Jinping Su, Shaoyang (CN); and Zaixin Yuan, Shaoyang (CN)
Assigned to Hunan Ventmed Medical Technology Co., Ltd., Shaoyang (CN)
Filed by Hunan Ventmed Medical Technology Co., Ltd., Shaoyang (CN)
Filed on Feb. 14, 2022, as Appl. No. 17/670,552.
Application 17/670,552 is a continuation of application No. PCT/CN2021/136371, filed on Dec. 8, 2021.
Claims priority of application No. 202110319087.9 (CN), filed on Mar. 25, 2021.
Prior Publication US 2022/0305230 A1, Sep. 29, 2022
Int. Cl. A61M 16/20 (2006.01); A61M 16/00 (2006.01); A61M 16/10 (2006.01)
CPC A61M 16/208 (2013.01) [A61M 16/0003 (2014.02); A61M 16/1005 (2014.02); A61M 2016/0042 (2013.01); A61M 2205/0216 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A non-hysteretic oxygen supply respirator system, comprising a respiratory mask (1), an inhaling pipe (2), an exhaling pipe (3), an oxygen supply chamber (4), an auxiliary oxygen supply pipeline (23), and a start-stop cylinder (5) for opening and closing the auxiliary oxygen supply pipeline (23), wherein the respiratory mask (1) and the oxygen supply chamber (4) are in communication respectively via the inhaling pipe (2) and the auxiliary oxygen supply pipeline (23), the respiratory mask (1) is in communication with outside via the exhaling pipe (3), and the auxiliary oxygen supply pipeline (23) and the exhaling pipe (3) pass through the start-stop cylinder (5);
the auxiliary oxygen supply pipeline (23) is spirally wound outside the exhaling pipe (3), a branch pipe (6) is provided between the exhaling pipe (3) and the auxiliary oxygen supply pipeline (23), a piston (61) and one end of a connecting rod (62) are provided inside the branch pipe (6), and the connecting rod (62) extends from the branch pipe (6);
a slideway (51), a support seat (52), and a pressing block (53) are provided inside the start-stop cylinder (5); a spiral part of the auxiliary oxygen supply pipeline (23) is located between the support seat (52) and the pressing block (53), the slideway (51) and the support seat (52) are fixedly connected to an inner wall of the start-stop cylinder (5), the pressing block (53) is fixedly connected to one end of the connecting rod (62) outside the branch pipe (6), and the pressing block (53) is slidably connected to the start-stop cylinder (5) via the slideway (51);
the auxiliary oxygen supply pipeline (23) is provided with an arc-shaped elastic support rod (231) and an elastic isolating block (233) inside a pipeline between the support seat (52) and the pressing block (53).