CN203494018U - Breathing machine capable of ventilating through thoracic cavity - Google Patents

Abstract

The utility model belongs to the field of medical equipment and relates to a ventilator for transthoracic ventilation; the ventilator is mainly composed of a drive system, a monitoring system, a safety system and a control system; the drive system, the monitoring system, the safety system and the control system are mutually connection; the drive system is composed of a bellows and a linear motor; the monitoring system is made up of a pressure sensor, a flow sensor and a bellows position sensor; the safety system is made up of a gas supply valve, a gas discharge pump and a safety valve; the control The system is a built-in computer. The results of use show that the utility model adopts the mode of gas circulation, and the ventilator only needs a small amount of air source; the ventilator uses a linear motor to directly drive the bellows, which can reduce energy loss, save energy, and greatly reduce the cost of the ventilator. The volume makes the ventilator more portable.

Description

ventilator for thoracic ventilation

technical field

The utility model belongs to the field of medical equipment, and relates to a ventilator for transthoracic ventilation. The ventilator adopts a brand-new ventilating method subverting traditional positive pressure ventilation, and is a mechanical ventilator for providing respiratory support for patients.

Background technique

The advent of the ventilator allowed medicine to take a huge step forward. At present, the ventilator is inseparable from clinical medical treatment. For example, general anesthesia requires mechanical ventilation, critically ill patients need ventilator support, and many lung diseases require ventilator-assisted ventilation. Even patients with upper airway obstruction can improve their lives through ventilators. quality.

The breathing principle of the existing ventilator is to increase the gas pressure to make the gas flow to the lungs through the ventilator, and then reduce the gas pressure to make the gas exhaled from the lungs. The above process is contrary to the principle of human natural breathing; therefore, positive airway pressure ventilation Lung damage may occur, and positive pressure ventilation requires tracheal intubation or tracheotomy, which can easily lead to lung infection and loss of speech function for long-term tracheal intubation or tracheotomy. In addition, positive pressure ventilation will increase intrathoracic pressure, affect blood return, and affect blood circulation; historically, there have been ventilators that imitate the principle of human natural breathing, which are called "iron lungs", but due to their large size, iron lungs , Many shortcomings such as poor patient comfort have withdrawn from the stage of history.

At present, there is an urgent need for a ventilator for transthoracic ventilation; this ventilator adopts the principle of human natural breathing, has a small volume, and does not have the disadvantage of positive airway pressure ventilation.

Contents of the invention

The purpose of the utility model is to overcome the defects or insufficiencies of the prior art and provide a ventilator for transthoracic ventilation; the ventilator adopts a brand-new ventilating method that subverts the traditional positive pressure ventilating, and is a kind of breathing apparatus for patients. supported mechanical ventilators.

The technical problem of the utility model adopts the following methods to solve:

Construct a closed bellows—thorax system. Through the movement of the bellows, the gas moves back and forth between the chest cavity and the bellows through the pipeline, so that periodic positive and negative pressures appear in the chest cavity to generate breathing; the bellows are directly connected to the motor, and the The motor directly drives the movement of the bellows.

The ventilator for transthoracic ventilation of the utility model is mainly composed of a drive system 9, a monitoring system 10, a safety system 11 and a control system 12; the monitoring system includes a pressure sensor, a flow sensor and a monitoring bellows for monitoring the closed gas passage. - the bellows position sensor of the amount of gas in the thoracic system; the safety system includes a gas supply device, a gas discharge device and a pressure limiting device, and the control system controls the supply and discharge of gas according to the amount of gas in the bellows - the thoracic system, so as to ensure The normal operation of the bellows; the control system is a built-in computer, and the monitoring system sends the collected data to the control system, and then combines the parameters set by the operator to issue instructions to make the drive system and safety system work normally.

Specifically, this thoracic ventilator is characterized in that it is mainly composed of a drive system 9, a monitoring system 10, a safety system 11 and a control system 12; the drive system 9, the monitoring system 10, the safety system 11 and the The control systems 12 are interconnected;

In the present utility model, described driving system 9 is made up of bellows 13 and linear motor 14;

The bellows 13 forms a closed space through the ventilation connecting pipe 4, the chest tube 7 and the chest cavity 6 on both sides;

The linear motor 14 is connected to the bellows 13 through a connecting rod 15, and when the linear motor 14 moves back and forth, it drives the bellows 13 to move up and down; wherein, the speed, amplitude and frequency of the linear motor 14 are controlled by the control system 12;

In the utility model, the monitoring system 10 is composed of a pressure sensor 17, a flow sensor 16 and a bellows position sensor 18;

Both the pressure sensor 17 and the flow sensor 16 are arranged on the ventilation connection tube 4 connecting the bellows 13 to the chest tube 7, and transmit the real-time pressure and the flow data of each breath to the control system 12;

The bellows position sensor 18 is arranged on the linear motor 14, and judges the position of the bellows 13 by sensing the position of the motor stator 28; when the position of the bellows 13 is too low or too high, it transmits data to the control system 12;

In the utility model, the safety system 11 is composed of a gas supply valve 20, a gas discharge pump 19 and a safety valve 23; 13 connections;

When the bellows 13-chest cavity 6 closed system is not tightly connected, the gas may leak from the ambient atmosphere to the closed system, or from the closed system to the ambient atmosphere:

(1) When the gas leaks from the ambient atmosphere to the closed system, the gas in the closed system increases, and when the gas in the closed system returns to the bellows 13, the volume inside the bellows 13 increases; when the position of the bellows 13 exceeds the warning position, the bellows position sensor 18 Send a signal to the control system 12, the control system 12 sends an instruction to the gas discharge pump 19, and then the gas discharge pump 19 discharges a certain amount of gas;

(2) When the gas in the closed system leaks to the ambient atmosphere, the gas in the closed system decreases, and the bellows position sensor 18 senses that the position of the bellows 13 is too low, and sends a signal to the control system 12, and the control system 12 sends an instruction to open the gas supply valve 20 , the high-pressure gas source 22 flows to the bellows 13 through the decompression device 21 and then through the intake valve 20; the intake valve 20 is closed when the gas is replenished;

The safety valve 23 is a two-way mechanical valve. When the pressure difference between the bellows and the environment exceeds the set pressure difference, the valve opens, and the gas flows from the high pressure end to the low pressure end, so as to avoid excessive injury to the patient when the ventilator breaks down;

In the utility model, the control system 12 is a built-in computer 25; the operator inputs breathing parameters according to the needs of the patient, and the computer 25 converts the parameters into instructions to control the motion of the linear motor 14; the pressure sensor 17 and the flow sensor 16 will collect The received data is transmitted back to the computer 25, and the computer 25 corrects the motion of the linear motor 14 according to the collected data; the bellows position sensor 18 uploads the position data of the bellows 13 to the computer 25, and the computer 25 instructs the gas discharge pump 19 and the gas supply valve 20 according to the data On or off.

In the ventilator for thoracic cavity ventilation of the present utility model, all parts all adopt the parts in the prior art, which can be purchased commercially.

Compared with the existing traditional caller, the ventilator for transthoracic ventilation of the present utility model has the following advantages:

(1) This thoracic ventilation ventilator adopts the method of gas circulation; the ventilator uses the bellows to send the gas into the chest cavity and then sucks the gas back to the bellows for repeated use. needs; therefore, the ventilator described in the utility model only needs a small amount of air source;

(2) The utility model uses a linear motor to directly drive the bellows, which can reduce energy loss, save energy, and greatly reduce the volume of the ventilator, making the ventilator more portable.

For ease of understanding, the thoracic ventilation ventilator of the present invention will be described in detail below with reference to the drawings and specific examples. It should be pointed out that the specific embodiments and accompanying drawings are only for illustration. Obviously, those skilled in the art can make various amendments or changes to the utility model according to the description herein, and these amendments and changes will also be included within the scope of this patent .

Description of drawings

Figure 1 is a schematic diagram of a classic ventilator ventilation;

Fig. 2 is the schematic diagram of the transthoracic ventilation described in the utility model;

Fig. 3 is the structural representation of the utility model transthoracic ventilation ventilator;

Fig. 4 is a side view of the linear motor.

In Figures 1 to 4, 1 is the lung, 2 is the trachea, 3 is the trachea tube, 4 is the ventilation connecting tube, 5 is the traditional ventilator, 6 is the chest cavity, 7 is the chest tube, and 8 is the transthoracic ventilation of the present invention. 9 is the driving system, 10 is the monitoring system, 11 is the safety system, 12 is the control system, 13 is the air box, 14 is the linear motor, 15 is the connecting rod, 16 is the flow sensor, 17 is the pressure sensor, 18 is Bellows position sensor, 19 is a gas discharge pump, 20 is a gas supply valve, 21 is a pressure reducing device, 22 is a high pressure source, 23 is a safety valve, 24 is a filter device, 25 is a computer, 26 is a wire, 27 is a rotor, 28 for the stator.

Detailed ways

Example 1

As shown in Figures 3 to 4, the thoracic ventilator is mainly composed of a drive system 9, a monitoring system 10, a safety system 11 and a control system 12; the drive system 9, the monitoring system 10, and the safety system 11 Interconnected with the control system 12;

The drive system 9 is composed of a bellows 13 and a linear motor 14; the bellows 13 forms a closed space through the ventilation connecting pipe 4, the chest tube 7 and the chest cavity 6 on both sides; the linear motor 14 and the bellows 13 are connected through a connecting rod 15 connected, when the linear motor 14 moves back and forth, it drives the bellows 13 to move up and down; wherein, the speed, amplitude and frequency of the linear motor 14 are controlled by the control system 12;

Described monitoring system 10 is made up of pressure sensor 17, flow sensor 16 and air box position sensor 18; The flow data of each breath is transmitted to the control system 12; the bellows position sensor 18 is arranged on the linear motor 14, and the position of the bellows 13 is judged by sensing the position of the motor stator 28; when the position of the bellows 13 is too low or too high, the control system 12 transfer data;

The safety system 11 is composed of a gas supply valve 20, a gas discharge pump 19 and a safety valve 23; the gas supply valve 20, the gas discharge pump 19 and the safety valve 23 are all connected to the bellows 13 through the ventilation connecting pipe 4;

When the bellows 13-chest cavity 6 closed system is not tightly connected, the gas may leak from the ambient atmosphere to the closed system, or from the closed system to the ambient atmosphere:

(1) When the gas leaks from the ambient atmosphere to the closed system, the gas in the closed system increases, and when the gas in the closed system returns to the bellows 13, the volume inside the bellows 13 increases; when the position of the bellows 13 exceeds the warning position, the bellows position sensor 18 Send a signal to the control system 12, the control system 12 sends an instruction to the gas discharge pump 19, and then the gas discharge pump 19 discharges a certain amount of gas;

(2) When the gas in the closed system leaks to the ambient atmosphere, the gas in the closed system decreases, and the bellows position sensor 18 senses that the position of the bellows 13 is too low, and sends a signal to the control system 12, and the control system 12 sends an instruction to open the gas supply valve 20 , the high-pressure gas source 22 flows to the bellows 13 through the decompression device 21 and then through the intake valve 20; the intake valve 20 is closed when the gas is replenished;

The safety valve 23 is a two-way mechanical valve. When the pressure difference between the bellows and the environment exceeds the set pressure difference, the valve opens, and the gas flows from the high pressure end to the low pressure end, so as to avoid excessive injury to the patient when the ventilator breaks down;

The control system 12 is a built-in computer 25; the operator inputs breathing parameters according to the needs of the patient, and the computer 25 converts the parameters into instructions to control the motion of the linear motor 14; the pressure sensor 17 and the flow sensor 16 transmit the collected data back The computer 25, and the computer 25 corrects the motion of the linear motor 14 according to the collected data; the bellows position sensor 18 uploads the position data of the bellows 13 to the computer 25, and the computer 25 instructs the gas discharge pump 19 and the gas supply valve 20 to open or close according to the data.

Example 2

As shown in Figure 1 to Figure 4,

The traditional ventilator 5 is connected to the ventilator through tracheal intubation 3, tracheotomy or face mask. The ventilator increases the gas pressure to make the gas flow to the lungs 1, and then the ventilator reduces the gas pressure to make the gas flow out of the lungs, thereby generating breathing;

Compared with the traditional ventilator 5, the chest ventilator 8 is connected to the ventilator through the chest tube 7; when the pressure in the ventilator 8 is positive, the gas flows to the chest cavity 6, the lungs are compressed 1, and the patient exhales; When the internal pressure of the ventilator 8 for thoracic ventilation is negative pressure, the gas flows from the chest cavity 6 to the ventilator 8 for transthoracic ventilation, the lung 1 is recruited, and the patient inhales gas to complete a breathing cycle.

The thoracic ventilator 8 is mainly composed of a drive system 9, a monitoring system 10, a safety system 11 and a control system 12; the drive system 9, the monitoring system 10, the safety system 11 and the control system 12 are connected to each other;

The drive system 9 is composed of a bellows 13 and a linear motor 14; the bellows 13 forms a closed space through the ventilation connecting pipe 4, the chest tube 7 and the chest cavity 6 on both sides; the linear motor 14 and the bellows 13 are connected through a connecting rod 15 connected, when the linear motor 14 moves back and forth, it drives the bellows 13 to move up and down; wherein, the speed, amplitude and frequency of the linear motor 14 are controlled by the control system 12;

Described monitoring system 10 is made up of pressure sensor 17, flow sensor 16 and air box position sensor 18; The flow data of each breath is transmitted to the control system 12; the bellows position sensor 18 is arranged on the linear motor 14, and the position of the bellows 13 is judged by sensing the position of the motor stator 28; when the position of the bellows 13 is too low or too high, the control system 12 transfer data;

The safety system 11 is composed of a gas supply valve 20, a gas discharge pump 19 and a safety valve 23; the gas supply valve 20, the gas discharge pump 19 and the safety valve 23 are all connected to the bellows 13 through the ventilation connecting pipe 4;

When the bellows 13-chest cavity 6 closed system is not tightly connected, the gas may leak from the ambient atmosphere to the closed system, or from the closed system to the ambient atmosphere:

(1) When the gas leaks from the ambient atmosphere to the closed system, the gas in the closed system increases, and when the gas in the closed system returns to the bellows 13, the volume inside the bellows 13 increases; when the position of the bellows 13 exceeds the warning position, the bellows position sensor 18 Send a signal to the control system 12, the control system 12 sends an instruction to the gas discharge pump 19, and then the gas discharge pump 19 discharges a certain amount of gas;

(2) When the gas in the closed system leaks to the ambient atmosphere, the gas in the closed system decreases, and the bellows position sensor 18 senses that the position of the bellows 13 is too low, and sends a signal to the control system 12, and the control system 12 sends an instruction to open the gas supply valve 20 , the high-pressure gas source 22 flows to the bellows 13 through the decompression device 21 and then through the intake valve 20; the intake valve 20 is closed when the gas is replenished;

The safety valve 23 is a two-way mechanical valve. When the pressure difference between the bellows and the environment exceeds the set pressure difference, the valve opens, and the gas flows from the high pressure end to the low pressure end, so as to avoid excessive injury to the patient when the ventilator breaks down;

The control system 12 is a built-in computer 25; the operator inputs breathing parameters according to the needs of the patient, and the computer 25 converts the parameters into instructions to control the motion of the linear motor 14; the pressure sensor 17 and the flow sensor 16 transmit the collected data back The computer 25, and the computer 25 corrects the motion of the linear motor 14 according to the collected data; the bellows position sensor 18 uploads the position data of the bellows 13 to the computer 25, and the computer 25 instructs the gas discharge pump 19 and the gas supply valve 20 to open or close according to the data.

Claims (7)

1. through a respirator for thoracic cavity ventilation, it is characterized in that, mainly by drive system (9), monitoring system (10), security system (11) and control system (12), formed; Described drive system (9), monitoring system (10), security system (11) and control system (12) interconnect;

Described drive system (9) is comprised of bellows (13) and linear electric motors (14);

Described monitoring system (10) is comprised of pressure transducer (17), flow transducer (16) and bellows position sensor (18);

Described security system (11) is comprised of gas supply valve (20), gas excavationg pump (19) and safety-valve (23);

Described control system (12) is a built-in computer (25).

2. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, described bellows (13) consist of the space of a sealing ventilation connection tube (4), ductus thoracicus (7) and bilateral thoracic cavity (6).

3. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, described linear electric motors (14) are connected by connecting rod (15) with bellows (13); When linear electric motors (14) back and forth movement, drive bellows (13) to move up and down; Wherein, speed, amplitude and the frequency of linear electric motors (14) motion are controlled by control system (12).

4. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, it is upper that described pressure transducer (17) and flow transducer (16) are all arranged at the ventilation connection tube (4) that bellows (13) are connected with ductus thoracicus (7), and instant pressure and each data on flows of breathing are passed to control system (12).

5. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, it is upper that described bellows position sensor (18) is arranged at linear electric motors (14), by experiencing the position of the position judgment bellows (13) of motor stator (28); When bellows (13) position is too low or when too high to control system (12) transmission data.

6. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, described gas supply valve (20), gas excavationg pump (19) and safety-valve (23) are all connected with bellows (13) by ventilation connection tube (4).

7. by the respirator of ventilating through thoracic cavity described in claim 1, it is characterized in that, described safety-valve (23) is a two-way mechanical valve.

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