Patent ID: 11944749
Assignee: BMC MEDICAL CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. The ventilation-treatment apparatus according to claim 4, wherein
the first valve body comprises a first penetrating part, and a first covering part and a first stopping part that are connected to two ends of the first penetrating part, respectively, the first penetrating part penetrates the first gas hole and forms a radial gap with the first gas hole, the first covering part and the first stopping part are located at an inner side and an outer side of the first gas hole, respectively, the first covering part is configured for covering and opening the radial gap, the first elastic member is a compression spring nested to the first penetrating part, and the first elastic member is connected between the first stopping part and a periphery of the first gas hole; and
the second valve body comprises a second penetrating part, and a second covering part and a second stopping part that are connected to two ends of the second penetrating part, the second penetrating part penetrates the second gas hole and forms a radial gap with the second gas hole, the second covering part and the second stopping part are located at an inner side and an outer side of the second gas hole, respectively, the second covering part is configured for covering and opening the radial gap, the second elastic member is a compression spring nested to the second penetrating part, and the second elastic member is connected between the second stopping part and a periphery of the second gas hole.