CN213852560U

CN213852560U - Carbon dioxide monitoring device for oxygen supply through nose

Info

Publication number: CN213852560U
Application number: CN202020212068.7U
Authority: CN
Inventors: 张转; 张冬生; 李广; 田顺平; 谭潮; 周炜; 张荦; 马蓉蓉; 袁林
Original assignee: Affiliated Hospital of Yangzhou University
Current assignee: Affiliated Hospital of Yangzhou University
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2021-08-03
Anticipated expiration: 2030-02-18

Abstract

The carbon dioxide monitoring device for supplying oxygen through the nose is a combined device for monitoring the concentration of carbon dioxide in expiration while supplying oxygen to a patient by using a nasal catheter, and comprises an oxygen flow meter, a carbon dioxide detector and the nasal catheter. The carbon dioxide monitoring device for supplying oxygen through the nose displays and monitors the oxygen supply amount and the carbon dioxide concentration (or end-expiratory carbon dioxide partial pressure) value for the patient in real time, and alarms when the carbon dioxide concentration (or end-expiratory carbon dioxide partial pressure) value is higher than a fixed value. The nasal catheter consists of an oxygen input tube and an expiration tube. The plug and the jack of the oxygen input pipe and the plug and the jack of the expiration pipe adopt different diameters and colors, so that errors are prevented during operation. Use of the carbon dioxide monitoring device by nasal oxygen supply: oxygen pipe and oxygen gas source intercommunication are used to the oxygen connector, provide high-pressure oxygen for intranasal oxygen suppliment carbon dioxide monitoring devices, carry out decompression through the oxygen pressure reducer and adjust.

Description

Carbon dioxide monitoring device for oxygen supply through nose

Technical Field

The utility model relates to a medical apparatus, more specifically the intranasal oxygen suppliment carbon dioxide monitoring devices that says so.

Background

Under the non-general anesthesia such as intraspinal anesthesia or nerve block anesthesia, the patient is subjected to oxygen inhalation through nasal catheter conventionally, and the pulse oxygen saturation (S) is monitored_PO₂) But to the end-tidal carbon dioxide partial pressure (P)_ETCO₂) The monitoring of (a) has not received sufficient attention. Under non-general anesthesia, the patient's respiratory function may be inhibited to some extent. For example, after intraspinal anesthesia, the plane of block can have a significant effect on respiratory function, with the higher the plane, the greater the effect. When the block reaches the 4-plane of the chest, the phrenic nerve and the intercostal nerve can be affected, and the ventilation volume is insufficient; when nerve block anesthesia is performed, sedation and analgesia drugs are often used for assisting to make a patient comfortable in the operation, but the use of the sedation and analgesia drugs can also inhibit the respiratory function to a certain extent. Monitoring of intraoperative respiratory function, P_ETCO₂Ratio of S_PO₂Has more important significance.

P_ETCO₂Considered as the sixth basic vital sign, except body temperature, respiration, pulse, blood pressure, arterial oxygen saturation. Monitoring P_ETCO₂The emergency can be identified in time, and the rescue opportunity is prevented from being delayed. Research shows that P is combined_ETCO₂Monitoring and S_PO₂The incidence rate of preventable anesthesia accidents can be reduced by 93 percent. Continuous monitoring of P_ETCO₂Can make 10% of the problems in operation be diagnosed and treated early. It can be said that the meaning represented by a small waveform of carbon dioxide is very important and is an important ring for ensuring the safety of patients.

The oxygen flow meter mainly comprises mechanical regulation and electronic regulation, wherein the mechanical regulation is usually used for single use, such as the oxygen flow meter which is commonly used on a hospital bed in clinic; electronic regulation is commonly used in instruments such as ventilators.

The carbon dioxide detection has various methods, such as a chemical method, an electrochemical method and infrared carbon dioxide, and has the advantages of simple and convenient operation, direct concentration reading, long service life, short preheating time and accurate and reliable measurement result.

Disclosure of Invention

In order to solve the clinical requirement, according to the current clinical use situation, an instrument for monitoring the concentration of carbon dioxide in the expired air of a patient while inhaling oxygen through the nose is designed. The carbon dioxide monitoring device for supplying oxygen through the nose is a combined device for monitoring the concentration of carbon dioxide in the expiration of a patient while supplying oxygen to the patient by using a nasal catheter. The carbon dioxide monitoring device for supplying oxygen through nose consists of three parts: an oxygen flow meter, a carbon dioxide detector and a nasal catheter. The oxygen flow meter comprises an oxygen pressure reducer, a flow regulating unit and a flow control display unit. The carbon dioxide detector comprises a carbon dioxide sensor, a carbon dioxide detection unit and a carbon dioxide display and alarm unit. The nasal catheter consists of an oxygen input tube and an expiration tube. The plug jacks and jacks of the oxygen input pipe and the plug jacks and jacks of the expiration pipe adopt different diameters and colors. The plug of the oxygen input tube is inserted into the oxygen input jack, and the plug of the expiration tube is inserted into the expiration jack.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a schematic view of the present invention.

In the figure: 1. a carbon dioxide detection unit; 2. an oxygen flow regulating unit; 3. a control display and alarm unit; 4. a nasal plug tube; 5. an exhalation tube; 6. an oxygen input tube; 7. an oxygen connector; 8. an oxygen pressure reducer; 9. an oxygen pressure reduction adjusting knob; 10. A display screen; 11. an oxygen pressure gauge; 12. an oxygen input jack; 13. an exhalation jack; 14. and a power switch.

Detailed Description

The pressure of an oxygen source in a medical and health unit is relatively high, and the oxygen source can be used only by decompression; the current common oxygen flowmeters are of two major types, 1, mechanical regulation; 2. and (4) electronic adjustment. In order to facilitate the control and display requirements, the oxygen flow meter of the carbon dioxide monitoring device for supplying oxygen through the nose adopts an electronic type to adjust the oxygen flow, and comprises an oxygen pressure reducer, a flow adjusting unit and a flow control display unit. Alternatively, an existing oxygen flow meter or a component thereof may be used.

The oxygen pressure reducer is used for reducing the high pressure of the oxygen source into oxygen with lower pressure. The front end of the oxygen pressure reducer is provided with an oxygen connector which is communicated with an oxygen gas source through an oxygen pipe to provide the oxygen gas source for the oxygen pressure reducer. The oxygen pressure reduction adjusting knob is an element for adjusting the oxygen pressure, and the proper oxygen pressure is output by rotating the oxygen pressure reduction adjusting knob; the output end of the oxygen pressure reducer is provided with an oxygen pressure gauge for displaying the output oxygen pressure.

The oxygen flow regulating unit comprises a flow control display unit, a flow sensor and a flow regulator. The flow sensor is an element for detecting the flow rate of oxygen, and is an essential element for controlling the output flow rate of oxygen by detecting the flow rate of output oxygen. The flow regulator is controlled by the flow control display unit to realize the regulation of the oxygen output. The input end of the flow regulator is connected with the output end of the oxygen pressure reducer, and the output end of the flow regulator is connected with the oxygen output jack through an oxygen hose.

The flow control display unit sets and controls the output oxygen flow and displays the output oxygen flow value, and the output end of the flow control display unit is connected with the input end of the oxygen flow regulating unit.

The carbon dioxide detection has various methods, and the infrared carbon dioxide detection has the advantages of simple and convenient operation, direct concentration reading, long service life, short preheating time and accurate and reliable measurement result, and is more suitable for being used in the method. The carbon dioxide detector in the carbon dioxide monitoring device supplied by the nose adopts an infrared carbon dioxide detection method. Existing carbon dioxide detectors or components thereof may be used. The carbon dioxide detector comprises a carbon dioxide sensor, a carbon dioxide detection unit and a carbon dioxide display and alarm unit. The carbon dioxide sensor is a detection element and is arranged in a detection chamber of the carbon dioxide detection unit, and the input end of the detection chamber is connected with the expiration jack through a hose to receive the gas expired by the patient. The carbon dioxide display and alarm unit is connected with the carbon dioxide detection unit and is used for displaying the carbon dioxide concentration value and giving an alarm.

The nasal catheter consists of an oxygen input tube and an expiration tube. The oxygen input pipe is used for inhaling the air pipe, and the expiration pipe is used for carbon dioxide muffler. The oxygen input tube and the expiration tube have the same structure and shape, and are composed of a hose, a nose plug tube and a plug, wherein one end of the hose is provided with the plug, the other end of the hose is closed (blind end), a thinner hose (nose plug tube) is arranged near the blind end, and the oxygen input tube and the blind end of the expiration tube are assembled together to form a whole. The plugs of the oxygen input tube and the expiratory tube are respectively inserted into the oxygen input jack and the expiratory jack. Meanwhile, the exhalation tube and the oxygen input tube are conveniently distinguished, and the plug and the jack of the exhalation tube and the plug and the jack of the oxygen input tube are designed to be different in diameter and color. The output oxygen in the carbon dioxide monitoring device of the transnasal oxygen supply is supplied to the patient through the oxygen input tube, and the expired gas of the patient is sent into the carbon dioxide monitoring device of the transnasal oxygen supply through the expiration tube to detect the concentration of the carbon dioxide, and an alarm is given out when the concentration of the carbon dioxide of the patient exceeds a fixed value.

The oxygen flowmeter is provided with a control display unit, and the carbon dioxide detector is also provided with a display and alarm unit which can be independently arranged, and can be independently used like two instruments. The carbon dioxide monitoring device capable of supplying oxygen through the nose is taken as a whole, in order to implement unified control, display and element reduction, a processor and a display screen of a control display unit in the oxygen flowmeter and a processor, a display screen and an alarm of a carbon dioxide detection unit in the carbon dioxide detector can be combined together to form a control display and alarm unit capable of controlling, processing, displaying and alarming, and the processor is used for unified control, processing, displaying and alarming. Converting, by the processor, the detected carbon dioxide concentration to P as required for clinical use_ETCO₂To carry outAnd (6) displaying.

Use of the carbon dioxide monitoring device by nasal oxygen supply: oxygen pipe and oxygen gas source intercommunication are used to the oxygen connector, provide high-pressure oxygen for intranasal oxygen suppliment carbon dioxide monitoring devices, carry out decompression through the oxygen pressure reducer and adjust. The plug for inputting oxygen is inserted into the oxygen input jack, and the plug for the expiratory tube is inserted into the expiratory jack. Turning on a power switch, and starting and working the carbon dioxide monitoring device by supplying oxygen through the nose; supplying a set oxygen flow rate to the patient from the oxygen input tube by adjusting the oxygen output flow rate; the gas exhaled by the patient is sent to a carbon dioxide detector through an exhalation tube for detection, and the flow of oxygen inhaled by the patient and the concentration of carbon dioxide exhaled by the patient are displayed on a display screen. The carbon dioxide detector continuously detects the concentration of carbon dioxide, and the concentration of carbon dioxide of a patient is monitored. The real-time status of the patient is more clearly determined by observing the real-time inspired oxygen flow and expired carbon dioxide concentration. If the input oxygen needs to be humidified, an oxygen humidifying bottle can be added between the oxygen input jack and the oxygen input pipe, and the oxygen enters the oxygen input pipe after passing through the humidifying bottle. If recording and saving are required, a recording unit can be added to record all data in the using process.

The carbon dioxide monitoring device for supplying oxygen through the nose utilizes mature technology, has reliable performance and can be widely applied to clinic.

Claims

1. A carbon dioxide monitoring device for supplying oxygen through nose is characterized by comprising an oxygen flow meter, a carbon dioxide detector and a nasal catheter; the oxygen flow meter comprises an oxygen pressure reducer, a flow regulating unit and a flow control display unit; the carbon dioxide detector comprises a carbon dioxide sensor, a carbon dioxide detection unit and a carbon dioxide display and alarm unit; the nasal catheter consists of an oxygen input tube and an expiration tube, the oxygen input tube and the expiration tube consist of a hose, a nasal plug tube and a plug, one end of the hose is provided with the plug, the other end of the hose is a blind end, the nasal plug tube is arranged at a position close to the blind end, and the oxygen input tube and the blind end of the expiration tube are assembled together; the plug and the jack of the oxygen input tube and the plug and the jack of the expiration tube adopt different diameters and colors, the plug of the oxygen input tube is inserted into the oxygen input jack, and the plug of the expiration tube is inserted into the expiration jack.