An injection type carbon dioxide regulator for a ventilator

Abstract

The present invention relates to an injection type carbon dioxide regulator for a ventilator, and the purpose is to solve the technical problem that the existing clinical use of ventilators to assist in providing carbon dioxide to patients is prone to human-machine confrontation. The technical solution is: it includes a cylinder, a piston, a hollow shaft push rod and a plurality of clamping strips, a hollow shaft through hole is provided in the middle of the top surface of the cylinder, and clamping grooves for fixing the clamping strips are provided at both ends of the hollow shaft through hole on the top surface of the cylinder, and a tracheal intubation interface integrated with the cylinder is provided at the bottom end of the cylinder, the piston is arranged in the cylinder, the hollow shaft push rod is inserted into the hollow shaft through hole and passes through the middle of the piston, the lower end of the hollow shaft push rod is flush with the bottom surface of the piston, the top end of the hollow shaft push rod is a ventilator interface and exceeds the top surface of the cylinder, and a plurality of clamping strips are evenly arranged on both sides of the outer wall of the hollow shaft push rod. The present invention can adjust the volume of the respiratory dead space by adjusting the up and down movement of the injection piston to increase the reuse of carbon dioxide.

Description

Technical Field

[0001] The invention belongs to the technical field of emergency medicine, and in particular relates to an injection type carbon dioxide regulator for a ventilator. Background Art

[0002] The normal partial pressure of carbon dioxide in human blood is 40±5 mmHg. When the partial pressure of carbon dioxide is lower than the normal value, it is diagnosed as "respiratory alkalosis". Respiratory alkalosis is a common emergency disease and a frequently occurring disease. It is often caused by mood changes, strenuous exercise, crying, severe pain, poisoning, trauma, chest, and brain diseases, and manifests itself in symptoms such as dizziness, irritability, difficulty breathing, numbness of the hands and feet, and convulsions.

[0003] There are many clinical methods of giving oxygen, but there is no complete and feasible method of giving carbon dioxide. The most commonly used method is to cover the patient's mouth and nose with a paper tube to increase the dead space in the respiratory tract, allowing the exhaled gas containing carbon dioxide to be re-inhaled into the lungs to increase the partial pressure of carbon dioxide in the blood. However, if the patient uses a ventilator to assist breathing, the only way to solve this problem is to adjust the ventilator parameters, shorten the exhalation time or perform inverse ventilation. However, the adverse consequences of inverse ventilation are: human-machine confrontation, the patient feels particularly uncomfortable and must use sedatives. The ventilator function cannot be adjusted in time to adapt to the patient, which can easily lead to human respiratory muscle fatigue and machine failure, and cause further disorder of the human body's electrolytes and acid-base balance. In layman's terms, it is losing one thing while gaining another. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that the existing clinical use of ventilators to assist in providing carbon dioxide to patients is prone to cause human-machine conflict and cannot adjust the CO2 ventilation volume, and to provide an injection type carbon dioxide regulator for a ventilator.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An injection type carbon dioxide regulator for a ventilator comprises a cylinder, a piston, a hollow shaft push rod and a plurality of clamping strips, wherein a hollow shaft through hole is provided in the middle of the top surface of the cylinder, clamping grooves for fixing the clamping strips are provided at both ends of the hollow shaft through hole on the top surface of the cylinder, a tracheal intubation interface which is integrated with the cylinder is provided at the bottom end of the cylinder, the piston is arranged in the cylinder and the outer wall of the piston is in close contact with the inner wall of the cylinder, the hollow shaft push rod is inserted into the hollow shaft through hole and passes through the middle of the piston, the lower end of the hollow shaft push rod is flush with the bottom surface of the piston, the top end of the hollow shaft push rod is the ventilator interface and exceeds the top surface of the cylinder, and the plurality of clamping strips are evenly arranged on both sides of the outer wall of the hollow shaft push rod and are all located above the piston.

[0007] Furthermore, the hollow volume of the cylinder is 200-260ml.

[0008] Furthermore, the middle of the hollow shaft push rod is a gas channel, and the lower part of the piston and the inner side of the cylinder together form a zone I, and the zone I is connected to the gas channel.

[0009] Furthermore, the outer wall of the cylinder is provided with scale markings.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The present invention can easily adjust the dead space volume of the respiratory cavity by adjusting the up and down movement of the injection piston to increase the reuse of carbon dioxide, which not only eliminates the pain and respiratory muscle fatigue caused by the human-machine confrontation to the patient, but also maintains the balance of human electrolytes and pH, and the ventilator itself is also protected, reducing the failure rate;

[0012] 2. The present invention has a simple structure, is easy to operate and has low cost, filling the gap in the field of inverse ventilation that has been unavoidable both domestically and internationally;

[0013] 3. The present invention can also adjust the oxygen saturation at the same time, and the specific adjustment amount is determined by the infrared carbon dioxide detector and the transcutaneous oxygen saturation detector connected to the device.

[0014] 4. In addition to being applicable to ventilators, the present invention is also applicable to all people with spontaneous breathing who use masks, and the treatment effect is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0017] Figure 3 for Figure 1 A schematic diagram of a top view structure;

[0018] In the figure: 1- cylinder, 2- ventilator interface, 3- piston, 4- hollow shaft push rod, 5- clamping strip, 6- endotracheal tube interface;

[0019] 1.1-Hollow shaft through hole, 1.2-Card slot, 1.3-Scale markings. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-3As shown, an injection type carbon dioxide regulator for a ventilator comprises a cylinder 1, a piston 3, a hollow shaft push rod 4 and a plurality of clamping strips 5. The cavity volume of the cylinder 1 is 260 ml. A hollow shaft through hole 1.1 is provided in the middle of the top surface of the cylinder 1. A clamping groove 1.2 for fixing the clamping strip 5 is provided at both ends of the hollow shaft through hole 1.1 on the top surface of the cylinder. The bottom end of the cylinder 1 is provided with an endotracheal intubation interface 6 which is integrated with the cylinder. The outer wall of the cylinder 1 is also provided with a scale mark 1.3. The piston 3 is arranged in the cylinder 1 and the piston 3 is The outer wall is in close contact with the inner wall of the cylinder 1, the hollow shaft push rod 4 is inserted into the hollow shaft through hole 1.1 and passes through the middle of the piston 3, the lower end of the hollow shaft push rod 4 is flush with the bottom surface of the piston 3, the top of the hollow shaft push rod 4 is the ventilator interface 2 and exceeds the top surface of the cylinder 1, the several clips 5 are evenly arranged on both sides of the outer wall of the hollow shaft push rod 4, and are all located above the piston 3, the middle of the hollow shaft push rod 4 is a gas channel, the bottom of the piston 3 and the inner side of the cylinder 1 together form zone I, and the zone I is connected to the gas channel.

[0022] The cavity volume of the cylinder 1 can also be any value between 200-260 ml.

[0023] The working principle of the present invention is as follows:

[0024] When the device of the present invention is in use, the ventilator interface 2 is connected to the ventilator, the endotracheal tube interface 6 is connected to the endotracheal tube and the carbon dioxide monitoring module, and according to the patient's carbon dioxide demand, the hollow shaft push rod 4 is pulled up, and the clamping strip 5 passes upward through the clamping slot 1.2 and then the hollow shaft push rod 4 is rotated, and the clamping strip 5 and the clamping slot 1.2 are misaligned, so that the hollow shaft push rod 4 is fixed;

[0025] The oxygen in the ventilator is continuously provided through the gas channel in the middle of the hollow shaft push rod 4, and the carbon dioxide exhaled by the patient enters zone I through the endotracheal tube and mixes with the oxygen in the gas channel. The mixed gas in zone I is re-inhaled into the lungs by the patient, and its carbon dioxide can increase the partial pressure of carbon dioxide in the blood, thereby preventing the loss of carbon dioxide into the air. In this process, the inhaled carbon dioxide concentration can be increased, so that the carbon dioxide exhaled by the patient can be reused, and oxygen can be supplemented at the same time, thereby solving the problem of respiratory alkalosis or hypoxia. In addition, during use, the inhaled amount of carbon dioxide and oxygen can be quantitatively adjusted according to the infrared detector connected to the multi-parameter monitor.

[0026] The device of the present invention complies with the physiological breathing characteristics of the human body and has strong practicability.

Claims

1. An injection type carbon dioxide regulator for a ventilator, characterized in that: The invention comprises a cylinder (1), a piston (3), a hollow shaft push rod (4) and a plurality of clamping strips (5); the hollow volume of the cylinder (1) is 200-260 ml, a scale mark (1.3) is provided on the outer wall, a hollow shaft through hole (1.1) is provided in the middle of the top surface, and clamping grooves (1.2) for fixing the clamping strip (5) are provided at both ends of the hollow shaft through hole (1.1) on the top surface of the cylinder; a tracheal intubation interface (6) which is integrated with the cylinder (1) is provided at the bottom end of the cylinder (1); the piston (3) is arranged in the cylinder (1) and the outer wall of the piston (3) is connected to the cylinder (1). The inner wall of the cylinder (1) is in close contact with the piston (3), the lower part of the piston (3) and the inner side of the cylinder (1) together form a zone I, the zone I is connected to the gas passage, the middle of the hollow shaft push rod (4) is the gas passage, inserted into the hollow shaft through hole (1.1) and passing through the middle of the piston (3), the lower end of the hollow shaft push rod (4) is flush with the bottom surface of the piston (3), the top end of the hollow shaft push rod (4) is the ventilator interface (2) and exceeds the top surface of the cylinder (1), and the plurality of clamping strips (5) are evenly arranged on both sides of the outer wall of the hollow shaft push rod (4) and are all located above the piston (3).

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