Two-way ventilation structure and oxygen supply device capable of adjusting concentration of inhaled oxygen

Abstract

The invention relates to a two-way ventilation structure and an oxygen supply device containing the two-way ventilation structure and capable of adjusting the concentration of inhaled oxygen. The two-way ventilation structure comprises a ventilation valve mechanism; and the ventilation valve mechanism is arranged on the pipe wall of a ventilation pipeline and used for keeping two-way air circulation inside and outside the ventilation pipeline and expanding an air flow channel flowing from the ventilation pipeline to the outside when the internal pressure of the ventilation pipeline is larger than the external pressure. The oxygen supply device with the two-way ventilation structure is provided with an inspiration pipeline and an expiration pipeline; an inspiration valve plate and an expiration valve plate are responsible for air circulation of inspiration and expiration respectively; the concentration of inspired oxygen is adjusted by adjusting a convection channel of the two-way ventilation structure on the pipe wall of the expiration pipeline; the principle is simpler and more reasonable; therefore, the pipeline is more compact; the dead space amount is reduced; the ventilation and oxygen supply effects are improved; and meanwhile, the oxygen supply device can be connected with various oxygen supply devices with standard connectors, such as masks and nasal masks, is wider in applicability, and can adjust the oxygen concentration of inhaled air oxygen to be in a reasonable range according to clinical requirements.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a two-way ventilation structure and an oxygen supply device with the structure which can adjust the concentration of inhaled oxygen. Background technique [0002] Hypoxemia refers to the lack of oxygen in the blood, mainly manifested as a decrease in arterial oxygen partial pressure (PaO2) and pulse oxygen saturation (SpO2), usually due to airway obstruction, respiratory depression, lung disease, etc. Oxygen supply is an effective means to prevent its occurrence. Nowadays, painless technology is widely used in clinical practice. Due to its good sedation and analgesia, it improves the completion rate and accuracy of diagnosis and treatment, and meets people’s needs for comfortable medical care. It has been accepted by most examinees and medical workers. The most common painless technique in the endoscopy room or day operating room is deep sedation and general anesthesia w...

AI Technical Summary

Problems solved by technology

[0003] A patent document whose publication number is CN111135413A discloses a kind of airtight oxygen inhaler, which is provided with an air storage bag and a mouth and nose mask, and the proportion of the external air mixed by the proportional control valve comprising a valve and a baffle adjustment, but this technical solution still has certain deficiencies in actual use:

[0004] 1. On the same cross-section perpendicular to the pipeline, a two-way air valve is installed at the same time. In order to meet the oxygen inhalation requirements of the human body, the diameter of the pipeline will be larger and the pipeline will be thicker, so it cannot be connected to the external medical field. standard interface;

[0005] 2. It is not practical to adjust the oxygen intake and air intake at the same time by rotating the valve baffle. This method is not only difficult to grasp the accuracy of adjustment, but also increases the amount of operation for medical staff and is prone to mistakes;

[0006] 3. This rotary valve baffle structure is relatively complicated to manufacture, which is not conducive to large-scale industrial production;

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