PEEP (positive end expiratory pressure) valve and respirator with same

Abstract

The invention provides a PEEP (positive end expiratory pressure) valve and a respirator with the same. The PEEP valve is characterized in that one end of the PEEP valve is connected with a pipeline exhalation opening of the respirator and the other end of the PEEP valve is connected with the inlet end of an exhalation valve; the PEEP valve comprises a valve body (3) which is formed in the way that gas channels between the pipeline exhalation opening of the respirator and the inlet end of the exhalation valve are communicated via gases under predetermined pressure; and the predetermined pressure is adjusted by a linear pressure adjusting device. The PEEP valve can be completely independent of the respirator system to work, so the design idea of the respirator can be no longer restrained by the conditions of the PEEP valve and meanwhile the respirator without PEEP function has the PEEP function under the premise of not changing the respirator, thus elevating the grade of the respirator and expanding the clinical use range, greatly improving the quality of the respirator, lowering the cost and bringing great benefits to the respirator manufacturers and users.

Description

technical field [0001] The present invention relates to a PEEP (positive end expiratory pressure, positive end expiratory pressure) valve, in particular to an external PEEP valve used on a ventilator used in the medical field. In addition, the present invention also relates to a ventilator with the PEEP valve. Background technique [0002] Ventilators have been widely used in medical treatment, and PEEP, as a special therapeutic function for ventilators, has special clinical significance. The ventilator uses the PEEP valve to keep the airway at a certain positive pressure during the expiratory phase, so that the function of PEEP is to expand and fix the alveoli, to prevent the small airway from collapsing early at the end of expiration, and to re-expand the collapsed alveoli. Increasing alveolar volume can also increase the contact area between alveoli and microvessels to increase diffusion and oxygenation, improve uneven ventilation and perfusion, and redistribute water in...

AI Technical Summary

Problems solved by technology

[0005] Since the existing PEEP valve needs the support of the system power of the ventilator, if the PEEP function is to be realized, the design of the PEEP valve must be considered in the design of the ventilator, so that the design idea of ​​the ventilator is subject to the conditions of the PEEP valve. Constraints, which impose great constraints on production and increase the cost of medical equipment

[0006] In addition, since the existing PEEP valve requires the support of the system power of the ventilator, for the existing ventilator without the PEEP function, if the PEEP function is to be realized, it is necessary to carry out a large modification to the structure of the existing ventilator. As a result, the modification cost of the existing ventilator is relatively high, which limits the improvement of the grade of the ventilator and the scope of clinical use, and is not conducive to the improvement of the quality of the ventilator.

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