CN218075936U - Breathing machine - Google Patents

Abstract

The utility model relates to a ventilator, which comprises an air-oxygen mixing chamber, an oxygen gas path, an air gas path and a gas flow regulator; the outlet of the oxygen gas path and the outlet of the air gas path are respectively connected with the inlet of the air-oxygen mixing chamber, The outlet of the oxygen mixing chamber is used to connect to the patient interface; the first end of the gas flow regulator is connected to the oxygen gas circuit or the air gas circuit, and the second end of the gas flow regulator is used to connect to the patient interface to form an auxiliary gas supply branch The gas flow regulator is used to control the on-off of the auxiliary gas supply branch and the size of the gas flow. The ventilator of the utility model is provided with a gas flow regulator, the first end of the gas flow regulator is used to connect with the oxygen gas circuit or the air branch circuit, and the second end is connected to the patient interface to form an auxiliary gas supply branch circuit, thereby The ventilator can not only be used for the treatment of critically ill patients, but also provide high-flow oxygen therapy for patients, expanding the scope of use of the ventilator.

Description

Ventilator

technical field

The utility model belongs to the technical field of breathing equipment, in particular to a ventilator.

Background technique

In modern clinical medicine, the ventilator, as an effective means of artificially replacing the spontaneous ventilation function, has been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support treatment and emergency resuscitation. It occupies a very important position in the field of modern medicine. Ventilator is a vital medical equipment that can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients.

The air circuit design of the current ventilator is mostly a combination of one oxygen gas circuit and one air gas circuit, and this air circuit design method can only provide basic breathing functions for patients, and cannot meet more treatment needs. The scope of use is small.

Utility model content

The utility model provides a ventilator to expand the application range of the ventilator.

The embodiment of the utility model provides a ventilator, comprising an air-oxygen mixing chamber, an oxygen gas path and an air gas path; the outlet of the oxygen gas path and the outlet of the air gas path are respectively connected to the inlet of the air-oxygen mixing chamber connected, the outlet of the air-oxygen mixing chamber is used to connect to the patient interface;

The ventilator also includes a gas flow regulator; the first end of the gas flow regulator is connected to the oxygen gas path or the air gas path, and the second end of the gas flow regulator is used to connect to the patient The interface forms an auxiliary gas supply branch; the gas flow regulator is used to control the on-off of the auxiliary gas supply branch and the size of the gas flow.

Optionally, the third end of the gas flow regulator communicates with the atomizer.

Optionally, there are at least two gas flow regulators; the first end of one gas flow regulator is connected to the oxygen gas path, and the first end of the other gas flow regulator is connected to the air connection;

The ventilator also includes an air circuit switching valve; the outlet of the air circuit switching valve is used to connect with the atomizer, and the inlet of the air circuit switching valve is respectively connected to the first two of the at least two gas flow regulators. The three terminals are connected, and the gas circuit switching valve is used to control one of the at least two gas flow regulators to be connected to the atomizer.

Optionally, the oxygen gas path and the air gas path adopt a gas path with the same structure;

The gas path includes a gas flow stabilization device and a gas flow control device; the inlet of the gas flow stabilization device is connected to the gas source, and the outlet of the gas flow stabilization device is connected to the inlet of the gas flow control device and the gas flow control device respectively. The gas flow regulator is connected to the first end, and the outlet of the gas flow control device is connected to the patient interface.

Optionally, the gas flow stabilization device includes a first pressure sensor, a pressure relief valve, and a pressure relief valve; the gas source, the pressure relief valve, the pressure relief valve, and the gas flow control device are connected in sequence ; The gas flow regulator is connected between the pressure reducing valve and the gas flow control device;

The first pressure sensor is used to detect the pressure value of the gas between the gas source and the pressure relief valve;

The pressure relief valve is used to automatically relieve the pressure when the pressure value detected by the first pressure sensor is greater than the preset value, so as to reduce the gas pressure value below the preset value;

The pressure reducing valve is used to reduce and stabilize the gas pressure.

Optionally, the gas path further includes a filter, and the filter communicates with the gas source and the gas flow stabilizing device.

Optionally, the gas flow control device includes a proportional valve and a flow sensor, and the proportional valve communicates with the gas stabilizing device and the patient interface;

The flow sensor is used to detect the gas flow signal between the proportional valve and the patient;

The proportional valve is used to control the gas flow according to the gas flow signal detected by the flow sensor.

Optionally, the ventilator further includes a second pressure sensor, which is used to detect the pressure value of the gas between the air-oxygen mixing chamber and the patient interface; and/or

The ventilator also includes an inspiratory one-way valve, the inlet of the inspiratory one-way valve is connected with the outlet of the air-oxygen mixing chamber, and the outlet of the inspiratory one-way valve is connected with the patient interface.

Optionally, the ventilator further includes an emergency inhalation valve, and the emergency inhalation valve communicates with the air-oxygen mixing chamber.

Optionally, the ventilator further includes an exhalation air circuit, and the exhalation air circuit includes an exhalation valve and a respiratory mechanics sampling module; the exhalation valve communicates the patient interface with the external environment; the respiratory mechanics sampling module The module is used to collect the flow and pressure information of the patient's exhaled gas.

In the ventilator provided by the embodiment of the utility model, oxygen flows into the air-oxygen mixing chamber through the oxygen gas path, and air flows into the air-oxygen mixing chamber through the air path. Oxygen and air are mixed in the air-oxygen mixing chamber, and then mixed The outlet of the cavity flows out and flows through the patient interface for inhalation by the patient; and a gas flow regulator is also provided, the first end of the gas flow regulator is connected to the oxygen gas circuit, and the second end is connected to the patient interface to form an auxiliary The air supply branch is an auxiliary oxygen supply branch; or the first end of the gas flow regulator is connected to the air circuit, and the second end is connected to the patient interface, and the formed auxiliary air supply branch is an auxiliary air supply branch; The flow regulator can also control the on-off of the auxiliary gas supply branch and the size of the gas flow to output the required flow of oxygen or air for patient treatment, so that the ventilator can not only be used for the treatment of emergency and critically ill patients, but also can Provide patients with high-flow oxygen therapy, expanding the range of use of ventilators.

Description of drawings

Fig. 1 is a schematic structural diagram of a ventilator provided by an embodiment of the present invention.

The reference signs in the instructions are as follows:

1. Filter; 2. First pressure sensor; 3. Pressure relief valve; 4. Gas circuit check valve; 5. Pressure reducing valve; 6. Gas flow regulator; A. First end; B. Second end ; C, the third end; 7, gas circuit switching valve; 8, proportional valve; 9, flow sensor; 10, air-oxygen mixing chamber; 11, emergency suction valve; 12, suction check valve; 13, the second Pressure sensor; 14. Respiratory mechanics sampling module; 15. Exhalation valve; 16. Patient interface.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

It should be noted that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

As shown in Figure 1, the ventilator provided by the embodiment of the present utility model includes an air-oxygen mixing chamber 10, an oxygen gas path and an air gas path; The inlet is connected, and the outlet of the air-oxygen mixing chamber 10 is used to connect to the patient interface 16;

The ventilator also includes a gas flow regulator 6; the first end A of the gas flow regulator 6 is connected to the oxygen gas path or the air gas path, and the second end B of the gas flow regulator 6 is used to connect to the patient interface 16 to form an auxiliary Gas supply branch; the gas flow regulator 6 is used to control the on-off of the auxiliary gas supply branch and the size of the gas flow.

In the ventilator provided by the embodiment of the present utility model, oxygen flows into the air-oxygen mixing chamber 10 through the oxygen gas path, and air flows into the air-oxygen mixing chamber 10 through the air gas path. Oxygen and air are mixed in the air-oxygen mixing chamber 10, and then The outlet of the air-oxygen mixing chamber 10 flows out and flows through the patient interface 16 for inhalation by the patient; and a gas flow regulator 6 is also provided, the first end A of the gas flow regulator 6 is connected to the oxygen gas circuit, and the second end B is connected to the patient interface 16, and the auxiliary air supply branch formed is an auxiliary oxygen supply branch; or the first end A of the gas flow regulator 6 is connected to the air circuit, and the second end B is connected to the patient interface 16, forming an auxiliary air supply branch. The auxiliary air supply branch is an auxiliary air supply branch; at the same time, the gas flow regulator 6 can also control the on-off of the auxiliary air supply branch and the size of the gas flow, so as to output the required flow of oxygen or air for patient treatment, so that The ventilator can not only be used for the treatment of critically ill patients, but also provide high-flow oxygen therapy for patients, expanding the scope of use of the ventilator.

In one embodiment, as shown in FIG. 1, the third end C of the gas flow regulator 6 communicates with the nebulizer, so that the oxygen gas path or the air gas path provides driving gas for the nebulizer, so that the various structures of the ventilator The utilization rate is maximized, and the overall structure is more streamlined.

In one embodiment, as shown in Figure 1, there are at least two gas flow regulators 6; the first end A of one gas flow regulator 6 is connected to the oxygen gas path, and the first end A of the other gas flow regulator 6 End A is connected to the air circuit; the ventilator also includes an air circuit switching valve 7; the outlet of the air circuit switching valve 7 is used to connect with the nebulizer, and the inlet of the air circuit switching valve 7 is respectively connected to at least two gas flow regulators 6 The third end C of the gas path switching valve 7 is used to control the connection of one of the at least two gas flow regulators 6 to the atomizer.

In this embodiment, the gas path switching valve 7 is used to control the on-off of the gas path connected to each gas flow regulator 6, and select one of the gas flow regulators 6 to communicate with the atomizer, so that oxygen Or air flows into the nebulizer to be used as the driving gas; with this design, there are two driving gases, oxygen and air, to choose from. When one of the driving gases fails, the other driving gas can be used to ensure the normal operation of the atomizer. operation, which improves the operation stability of the ventilator.

In one embodiment, as shown in FIG. 1 , the oxygen gas path and the air gas path adopt the same structure of the gas gas path, which facilitates mass production of various components of the gas gas path, and facilitates processing and installation.

In one embodiment, as shown in Figure 1, the gas path includes a gas stabilizing device and a gas flow control device; the inlet of the gas stabilizing device is connected to the gas source, and the outlet of the gas stabilizing device is respectively connected to the gas flow control device The inlet of the gas flow regulator is connected to the first end A of the gas flow regulator 6, and the outlet of the gas flow control device is connected to the patient interface 16. The gas flow stabilization device is conducive to the smooth flow of gas in the gas path, and the gas flow control device can control the flow rate of oxygen or air flowing into the air-oxygen mixing chamber 10, and oxygen and air can flow in the air-oxygen mixing chamber according to a preset ratio. 10, and then pass through the patient interface 16 for inhalation by the patient.

In one embodiment, as shown in Figure 1, the gas flow stabilization device includes a first pressure sensor 2, a pressure relief valve 3 and a pressure relief valve 5; the pressure relief valve 3, pressure relief valve 5 and the gas flow control device are connected in sequence; The gas flow regulator 6 is connected between the pressure reducing valve 5 and the gas flow control device; the first pressure sensor 2 is used to detect the pressure value of the gas between the gas source and the pressure relief valve 3; the pressure relief valve 3 is used to When the pressure value detected by a pressure sensor 2 is greater than the preset value, the pressure is automatically released to reduce the gas pressure value below the preset value; the pressure reducing valve 5 is used to reduce and stabilize the gas pressure.

In this embodiment, the first pressure sensor 2 is located between the gas source and the pressure relief valve 3, and is used to detect the pressure value of the gas flowing into the gas circuit from the gas source; when the gas pressure value is greater than the preset value, The pressure relief valve 3 automatically relieves the pressure so that the pressure value of the gas flowing through the pressure relief valve 3 is reduced below the preset value, thereby protecting the various parts of the gas circuit; and the gas passes through the pressure relief valve 5 to reduce and Stabilize the gas pressure to ensure that the gas flows smoothly at an appropriate pressure, which is beneficial for patients to inhale.

In one embodiment, as shown in Figure 1, the gas flow stabilization device also includes a gas path check valve 4; the inlet of the gas path check valve 4 is connected to the outlet of the pressure relief valve 3, and the outlet of the gas path check valve 4 It is connected with the inlet of pressure reducing valve 5. The gas path check valve 4 is set so that the gas can only flow from the pressure relief valve 3 to the pressure reducing valve 5 to avoid gas backflow.

In one embodiment, as shown in FIG. 1 , the gas path further includes a filter 1 , and the filter 1 communicates with the gas source and the gas flow stabilization device. The gas input from the gas source to the gas circuit first flows through the filter 1 for filtration to remove impurities in the gas, ensure the purity of the gas, improve the breathing safety of the patient, and also help protect the components of the gas circuit.

In one embodiment, as shown in FIG. 1, the gas flow control device includes a proportional valve 8 and a flow sensor 9, and the proportional valve 8 communicates with the gas flow stabilization device and the patient interface 16; the flow sensor 9 is used to detect the relationship between the proportional valve 8 and the patient. Between the gas flow signal; the proportional valve 8 is used to control the gas flow according to the gas flow signal detected by the flow sensor 9. The proportional valve 8 is set in cooperation with the flow sensor 9 to accurately control the flow of gas, so that oxygen and air are mixed in the air-oxygen mixing chamber 10 according to a preset ratio, which is convenient for patients to inhale.

In one embodiment, as shown in FIG. 1 , the ventilator further includes a second pressure sensor 13 for detecting the pressure value of the gas between the air-oxygen mixing chamber 10 and the patient interface 16 . The second pressure sensor 13 is set to detect the gas pressure value at the outlet of the air-oxygen mixing chamber 10, and the pressure value of the gas inhaled by the patient can be monitored in real time, so that the gas pressure value detected by the second pressure sensor 13 can be adjusted for each gas path Adjust the pressure of the gas in the ventilator so that the patient can breathe comfortably and improve the comfort of the ventilator.

In one embodiment, as shown in FIG. 1 , the ventilator also includes an inhalation check valve 12, the inlet of the inhalation check valve 12 is connected to the outlet of the air-oxygen mixing chamber 10, and the outlet of the inhalation check valve 12 is connected to the outlet of the air-oxygen mixing chamber 10. Patient interface 16 is connected. An inspiratory one-way valve 12 is set so that gas can only flow from the air-oxygen mixing chamber 10 to the patient interface 16 , preventing the gas exhaled by the patient from flowing into the air-oxygen mixing chamber 10 .

In one embodiment, as shown in FIG. 1 , the ventilator further includes an emergency inhalation valve 11 , and the emergency inhalation valve 11 communicates with the air-oxygen mixing chamber 10 . When the oxygen gas path and the air gas path fail, the emergency inhalation valve 11 is opened, so that the air-oxygen mixing chamber 10 is communicated with the external environment, and the patient can inhale air to prevent suffocation.

In one embodiment, as shown in FIG. 1 , the ventilator also includes an exhalation air circuit, and the exhalation air circuit includes an exhalation valve 15 and a respiratory mechanics sampling module 14; the exhalation valve 15 communicates with the patient interface 16 and the external environment; The mechanical sampling module 14 is used to collect the flow and pressure information of the patient's exhaled gas. The gas exhaled by the patient first flows through the respiratory mechanics sampling module 14 to collect the flow and pressure information of the gas, so that the ventilator can adjust the flow and pressure of the gas in the oxygen gas path and the air gas path according to the flow and pressure information, so as to Improve the breathing comfort of the patient; then it is discharged to the external environment through the exhalation valve 15.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A breathing machine comprises an air-oxygen mixing cavity, an oxygen gas path and an air gas path; an outlet of the oxygen gas path and an outlet of the air gas path are respectively connected with an inlet of the air-oxygen mixing cavity, and an outlet of the air-oxygen mixing cavity is used for being connected to a patient interface; it is characterized in that the preparation method is characterized in that,

the ventilator further comprises a gas flow regulator; the first end of the gas flow regulator is connected with the oxygen gas circuit or the air gas circuit, and the second end of the gas flow regulator is used for being connected to a patient interface to form an auxiliary gas supply branch circuit; the gas flow regulator is used for controlling the on-off of the auxiliary gas supply branch and the gas flow.

2. The ventilator of claim 1, wherein the third end of the gas flow regulator is in communication with a nebulizer.

3. The ventilator of claim 2, wherein there are at least two of said gas flow regulators; the first end of one gas flow regulator is connected with the oxygen gas path, and the first end of the other gas flow regulator is connected with the air gas path;

the breathing machine also comprises a gas path switching valve; the outlet of the gas path switching valve is used for being connected with the atomizer, the inlet of the gas path switching valve is respectively communicated with the third ends of the at least two gas flow regulators, and the gas path switching valve is used for controlling one of the at least two gas flow regulators to be communicated to the atomizer.

4. The ventilator of claim 1, wherein the oxygen gas circuit and the air gas circuit are the same gas circuit;

the gas circuit comprises a gas flow stabilizing device and a gas flow control device; the inlet of the gas flow stabilizer is connected with a gas source, the outlet of the gas flow stabilizer is respectively connected with the inlet of the gas flow control device and the first end of the gas flow regulator, and the outlet of the gas flow control device is connected with the patient interface.

5. The ventilator of claim 4 wherein the gas flow stabilizer comprises a first pressure sensor, a pressure relief valve, and a pressure relief valve; the gas source, the pressure relief valve, the pressure reducing valve and the gas flow control device are communicated in sequence; the gas flow regulator is connected between the pressure reducing valve and the gas flow control device;

the first pressure sensor is used for detecting the pressure value of the gas between the gas source and the pressure relief valve;

the pressure relief valve is used for automatically relieving pressure when the pressure value detected by the first pressure sensor is greater than a preset value so as to reduce the pressure value of the gas below the preset value;

the pressure reducing valve is used for reducing and stabilizing the gas pressure.

6. The ventilator of claim 4, wherein said gas circuit further comprises a filter, said filter communicating said gas source and said gas flow stabilizer.

7. The ventilator of claim 4, wherein the gas flow control device comprises a proportional valve and a flow sensor, the proportional valve communicating the gas flow stabilizer and the patient interface;

the flow sensor is used for detecting a gas flow signal between the proportional valve and a patient;

the proportional valve is used for controlling the gas flow according to the gas flow signal detected by the flow sensor.

8. The ventilator of claim 1, further comprising a second pressure sensor for detecting a pressure value of gas between the air and oxygen mixing chamber and the patient interface; and/or

The breathing machine further comprises an inspiration one-way valve, an inlet of the inspiration one-way valve is connected with an outlet of the air-oxygen mixing cavity, and an outlet of the inspiration one-way valve is connected with the patient interface.

9. The ventilator of claim 1 further comprising an emergency inhalation valve in communication with said air-oxygen mixing chamber.

10. The ventilator of claim 1 further comprising an expiratory circuit, the expiratory circuit comprising an exhalation valve and a respiratory mechanics sampling module; the exhalation valve communicates the patient interface with an external environment; the respiratory mechanics sampling module is used for collecting the flow and pressure information of the gas exhaled by the patient.

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