WO2017206802A1

WO2017206802A1 - Multi-functional mainstream end-tidal carbon dioxide sensor

Info

Publication number: WO2017206802A1
Application number: PCT/CN2017/086046
Authority: WO
Inventors: 高举东
Original assignee: 高举东
Priority date: 2016-05-30
Filing date: 2017-05-26
Publication date: 2017-12-07
Also published as: CN105891459A; CN105891459B

Abstract

A multi-functional mainstream end-tidal carbon dioxide sensor comprises a housing (4) and an adapter (1). The housing (4) is detachably connected to the adapter (1). The inside of the housing (4) is a cavity, and is provided with a core for detecting and analyzing end-tidal carbon dioxide. An infrared sensor (6) of the core is correspondingly arranged with a transmission end of an infrared light source (12) of the core. A groove (414) is disposed on the housing between the infrared sensor (6) and the transmission end of the infrared light source (12). By means of the connection of the groove (414) to the adapter (1) a gas chamber for accommodating and detecting carbon dioxide is formed. The adapter (1) comprises an adapter portion (110) and a vent is disposed on the adapter portion (110). The adapter portion (110) is detachably connected to the groove (414). The vent is connected to a nose tube (14) or a breathing circuit. The sensor of the present invention can work in combination with adapters of various specifications to monitor both adult and non-adult, intubated and non-intubated patients, and has a range of functions. Adapters for the sensor of the present invention are easy to change and the sensor is easy to operate and comfortable to wear.

Description

Multifunctional mainstream end-of-end carbon dioxide sensor

Technical field

The invention belongs to the technical field of electrophysiological detection and monitoring, and particularly relates to a multifunctional mainstream end-of-end carbon dioxide sensor.

Background technique

Metabolism of human tissue cells produces C0 ₂ transported to the lungs via capillaries and veins, and excreted when exhaled. The concentration of end-tidal carbon dioxide can reflect the physiological metabolism, ventilation and circulation of the human body. Clinically, the concentration of carbon dioxide by end-tidal gas has important applications: monitoring ventilation function, maintaining normal ventilation, determining tracheal position, timely detecting mechanical failure of the exhalation machine, adjusting ventilator parameters, guiding ventilator removal, and monitoring C0 ₂ in vivo. Changes and monitoring loop functions and more.

There are two ways to sample the gas: bypass and mainstream. The bypass flow draws gas into the sample chamber through a thin sampling tube in the trachea or gas line and can be used for both intubating and non-intubated patients. The mainstream type is to mount the sensor directly on the interface of the endotracheal tube so that the breathing gas is in direct contact with the sensor.

However, the current mainstream type can only be used for intubation patients, and there is no sensor for monitoring non-intubated people to monitor mainstream carbon dioxide. Therefore, the use of non-intubated people cannot be met.

Summary of the invention

In view of the problems existing in the prior art, the present invention can be matched with a plurality of adapters of different specifications, thereby realizing measurement of non-intubated and intubated patients (adults, children), having various functions, convenient adapter switching, simple operation, and wearing. Comfort and other advantages.

The technical solution of the present invention to solve the above technical problems is as follows:

A multifunctional mainstream end-of-end carbon dioxide sensor includes a housing and an adapter; the housing is detachably coupled to the adapter;

The inside of the casing is a cavity, and is provided with a movement for detecting and analyzing end-tidal carbon dioxide; the infrared sensor end of the movement is correspondingly arranged with the emission end of the infrared light source of the movement, between the infrared sensor end and the emission end of the infrared light source. The housing is provided with a groove; the groove is connected with the adapter to form a gas chamber for accommodating and detecting carbon dioxide;

The adapter includes an adapter and a vent disposed on the adapter; the adapter is detachably coupled to the recess, the vent being coupled to the nasal tube or breathing circuit.

The beneficial effects of the invention are:

The invention can be matched with a plurality of adapters of different specifications, thereby realizing measurement of non-intubated and intubated patients (adults, children), and has the advantages of various functions, convenient adapter switching, simple operation, and comfortable wearing.

The housing is detachably connected to the adapter, and the adapter of the appropriate type or size can be selected to provide a variety of functions depending on actual needs, such as intubation or non-intubation, children or adults.

The movement is used to detect and analyze end-tidal carbon dioxide, and the data of the detection and analysis can be stored and processed, and finally the result is output to the host. When used, the end-tidal carbon dioxide enters the air chamber through the nasal tube or the breathing circuit in sequence. An infrared light source generating device and an infrared sensor are disposed inside the casing.

By adopting the nasal tube method, compared with the mask type collection method, the user may feel suffocating and breathing poorly under the condition of continuous monitoring for a long time.

The multifunctional mainstream end-of-end carbon dioxide sensor of the present invention can perform real-time monitoring of mainstream end-tidal carbon dioxide under continuous monitoring conditions, and real-time reaction parameters related to end-tidal carbon dioxide, such as concentration, partial pressure and respiratory frequency, and other parameters. Wait.

Based on the above technical solutions, the present invention can also be improved as follows.

Further, the movement includes an infrared light source generating device and an infrared sensor for detecting carbon dioxide, the infrared sensor is a two-channel infrared sensor; the groove divides the cavity into a first cavity and a second cavity, the first empty An infrared sensor is disposed in the cavity, and an infrared light source generating device is disposed in the second cavity. The emitting end of the infrared light source generating device is opposite to the detecting end of the infrared sensor; and the opposite sidewalls of the groove are respectively provided with a first through hole, wherein a first through hole communicates with the first cavity, and another first through hole communicates with the second cavity; the first through hole communicating with the first cavity is covered with a transparent infrared window and communicates with the second cavity The first through hole is covered by the infrared permeable window of the infrared light source generating device.

The beneficial effects of using the above scheme are:

The two-channel infrared sensor is covered with a filter that only allows narrow-band wavelength transmission. The opposite side of the sensor is an infrared light source generating device, and the infrared light source generating device is used to generate an infrared light source. The 4.26 micron wavelength on one channel only attenuates carbon dioxide. The other channel has no attenuation for carbon dioxide. The difference between these two signals and the carbon dioxide concentration has a function (exponential) relationship, and the microcontroller calculates the carbon dioxide concentration based on this functional relationship. The use of a two-channel infrared sensor makes the results of the test more accurate.

Further, the adapter includes a first adapter, a second adapter, and/or a third adapter;

The first adapter, the second adapter and the third adapter each include an adapting portion, the fitting portion and the groove form a gas chamber for accommodating carbon dioxide; the opposite side walls of the fitting portion are provided with a second through hole, the second pass The hole is covered with an infrared permeable film; the second through holes of the fitting portion are respectively disposed corresponding to the first through holes of the groove.

The beneficial effects of using the above scheme are:

When the adapter is connected to the groove, the end-tidal carbon dioxide enters the air chamber through the adapter, and the infrared light generated by the infrared light source generating device sequentially passes through the infrared light-transmitting window of the infrared light source generating device and one of the second through holes. The infrared ray film is passed through the infrared ray film, the gas chamber, and another second through hole, and the infrared ray window is covered by the first through hole, and then the infrared sensor converts the detected infrared light into an electrical signal.

The infrared penetrating window is transparent to the infrared light and seals the second through hole to prevent carbon dioxide Spilled from the second through hole.

Further, the first adapter includes a first fitting portion and two vents disposed on the first fitting portion, wherein one vent is an air inlet, and the other vent is an air outlet, the air inlet and the air outlet The air inlet is correspondingly disposed; the first fitting portion is an inner hollow box structure. In use, the air inlet is located near the human face, and the air inlet is connected to the nasal tube air outlet of the nasal tube; the first adapter The two second through holes are respectively located on the two side walls of the first fitting portion, and the two side walls are provided with slots, and the slots are inserted into the edges of the grooves.

The beneficial effects of using the above further solution are:

When the first adapter is used with the housing, it can meet the needs of non-intubated patients. In use, after the nasal tube is connected to the first adapter, the first adapter is inserted into the recess of the housing, and the nasal tube is inserted into or near the nostril of the user to breathe. Carbon dioxide is monitored by a movement inside the housing. Through reasonable settings, it has the advantages of simple operation, convenient wearing, and quick and accurate monitoring results.

Further, the second adapter is disposed perpendicular to an axis of the first through hole;

The second adapter includes a second fitting portion and a first vent pipe and a second vent pipe at both ends of the second fitting portion, the first vent pipe and the second vent pipe are respectively provided with a vent; the first pass The trachea and the second vent tube are respectively in communication with the interior of the second fitting portion, and the first vent tube and the second vent tube are connected in the breathing circuit.

The beneficial effects of using the above further solution are:

The combination of the second adapter and the housing can meet the needs of the intubation patient, and is particularly suitable for the needs of patients with large breathing, such as adult intubation patients. In use, the first vent tube and the second vent tube are connected directly or through other accessories to the breathing circuit. The utility model has the advantages of simple operation, convenient wearing, rapid and accurate monitoring results and the like.

Further, the third adapter includes an outer tube and an inner tube, the outer tube is outside the inner tube, and the outer tube has the same structure as the second adapter; the inner tube includes a first connecting member and a second connecting member, One company One end of the connector and one end of the second connector are connected by a snap.

Further, the first connecting member is a tubular structure, and a hole is formed in the tube wall;

The second connecting member is a tubular structure, which is divided into a hand-held portion, a third fitting portion and a plug portion in the axial direction; the third fitting portion is correspondingly disposed with the second fitting portion, The third fitting portion is provided with a through hole, and the through hole is correspondingly disposed with the position of the first through hole; the side wall of the plug portion is provided with a buckle, and the buckle extends into the card hole and is matched with the card hole Clamp.

The beneficial effects of using the above further solution are:

The combination of the third adapter and the housing can meet the needs of the intubation patient, and is particularly suitable for the needs of patients with small breathing, for example, for children with intubation. When in use, connect the snorkel directly or through other accessories to the breathing circuit. The utility model has the advantages of simple operation, convenient wearing, rapid and accurate monitoring results and the like.

The third adapter adopts the inner tube and the outer tube sleeve, and the outer tube has the same structure as the second adapter, which increases the applicability of the components. The inner tube is located inside the outer tube, which reduces the diameter of the respiratory circuit, and is especially suitable for children who are intubated. The inner tube portion is clamped by two connecting members, and the utility model has the advantages of simple operation and firm connection by utilizing the cooperation function of the card hole and the buckle.

Further, the movement further comprises a preamplifier circuit, an analog signal processing circuit, a setting storage circuit, a main CPU and a peripheral circuit, an LED lamp display circuit, and a power management communication power supply interface;

The infrared sensor is electrically connected to the preamplifier circuit, and the preamplifier circuit and the analog signal processing circuit, the setting storage circuit, the main CPU and the peripheral circuit, the power management communication power supply interface, and the infrared light source generating device are sequentially connected by a flexible wire. The LED lamp display circuit is electrically connected to the main CPU and the peripheral circuit through a flexible line; the infrared sensor and the preamplifier circuit are stacked; the infrared sensor, the preamplifier circuit, the analog signal processing circuit, and the setting storage circuit All are located in the first cavity; the power management communication power supply interface, the main CPU and the peripheral circuit, the LED light display circuit and the infrared light source generating device are located in the second cavity, the power management communication power supply interface, the main CPU and the peripheral circuit, LED light display circuits are stacked one after the other, and the LED light display circuit is located close to the observer One side.

The infrared sensor and the preamplifier circuit are stacked to form an infrared sensor and a preamplifier circuit.

The infrared sensor itself has a narrow-band filter (wavelength of 4.26 μm), and the infrared sensor converts the infrared light into an electrical signal. If there is C0 ₂ , since the C0 ₂ absorbs the infrared wavelength of 4.26 μm, the electrical signal becomes small. . The preamplifier circuit amplifies the electrical signal obtained by the infrared sensor.

The analog signal processing circuit is further amplified for the electrical signal amplified by the preamplifier circuit.

The storage circuit is set to store all data of the system and the storage of the calibration data.

The main CPU and peripheral circuits are calculated for all signal control.

The LED light display circuit is used to display the state of carbon dioxide in real time, and can display the respiratory waveform. When the main CPU detects carbon dioxide, the control LED light indicates that the circuit is illuminated. If the real-time concentration of carbon dioxide is higher, the LED display circuit is brighter or the pattern formed by the light is increased or prolonged.

The power management communication power supply interface is used to implement functions such as power supply, communication, and data transmission.

The infrared light source generating device is used to generate an infrared light source and can control the infrared light source.

The beneficial effects of using the above further solution are:

In order to avoid the normal use of the user caused by the excessive volume, the multifunctional mainstream end-of-end carbon dioxide sensor of the present invention has a compact structure and high space utilization. In the present case, the various parts of the movement are integrated on one circuit board and cannot be applied to the structure of the present invention. The invention adopts a split structure design, and each part (for example: infrared sensor and preamplifier circuit, analog signal processing circuit, setting storage circuit, main CPU and peripheral circuit, LED light display circuit, power management communication power supply interface and infrared The light source generating device is connected by a soft wire, and the infrared sensor and the infrared light source generating device are respectively located in the first cavity and the second cavity to ensure the realization of the carbon dioxide function monitoring; the power management communication power supply interface, the main CPU and the peripheral circuit, and the LED light are adopted. The display circuit is stacked in sequence to save space and ensure the reasonable setting in a narrow space under the premise of ensuring the function, which has the advantages of space saving and compact structure.

The setting of the LED display circuit on the side close to the observer facilitates the observation of the breathing condition.

Further, an external connection line is further disposed on the outside of the housing, and one end of the external connection line is electrically connected to the power management communication power supply interface, and the other end of the external connection line is electrically connected to the host.

The beneficial effects of using the above further solution are: the protection of the line used in the external connection-to-point connection process, the monitoring and analysis data is output to the host through the line, and the power is supplied to the multi-function mainstream end-of-end carbon dioxide sensor.

Further, the housing is further provided with a hole for piercing the strap.

The advantage of using the above further solution is that the strap can be placed on the housing during use, and the strap is provided with the advantages of being convenient to use and convenient to wear.

Further, the nasal tube is a U-shaped nasal tube, the top of the U-shaped nasal tube is a nasal tube air inlet, located at the user's nostril; the bottom of the U-shaped nasal tube is a nasal tube air outlet, and the nasal tube outlet is Adapter vent connection.

The beneficial effect of using the above further solution is that it is advantageous to collect end-tidal carbon dioxide.

DRAWINGS

1 is a schematic diagram of the overall explosion structure of the multifunctional mainstream end-of-end carbon dioxide sensor according to the present invention (the cords for connecting the parts of the movement are not shown);

Figure 2 is a schematic view of the explosion structure of the first embodiment of the present invention (the cords for connecting the parts of the movement are not shown);

Figure 3 is a schematic view of the explosion structure of the second embodiment of the present invention (the cords for connecting the parts of the movement are not shown);

Figure 4 is a schematic view of the explosion structure of the third embodiment of the present invention (the cords for connecting the parts of the movement are not shown);

FIG. 5 is a schematic diagram of a wearing structure according to Embodiment 1 of the present invention; including FIG. 5A, FIG. 5B, FIG. 5C and Figure 5D;

Figure 6 includes Figures 6A to 6B, which are schematic views of the structure of the nasal cannula;

Figure 7 includes Figures 7A through 7G, which are schematic structural views of the second adapter;

Figure 8 is a schematic structural view of a cover;

Figure 9 includes Figures 9A to 9G, which are schematic structural views of the shell body;

Figure 10 includes Figures 10A to 10G, which are schematic structural views of the first connecting member;

Figure 11 includes Figures 11A through 11G, which are schematic structural views of the first adapter;

Figure 12 includes Figures 12A to 12G, which are schematic structural views of the second connecting member;

Figure 13 is a schematic structural view of an external connection.

In the drawings, the list of parts represented by each label is as follows:

1. The first adapter, 110, the first adapter, 111, the slot, 112, the second through hole, 113, the air inlet, 114, the air outlet, 115, the protrusion;

2, a second adapter, 210, a second adapter, 211, a first snorkel, 212, a second snorkel;

3, a third adapter, 310, a first connector, 311, a second connector, 312, a card hole, 313, a buckle, 314, a hand, 315, a third adapter, 316, a plug;

4, housing, 410, shell body, 411, shell cover, 412, first cavity, 413, second cavity, 414, groove, 415, first through hole, 416, housing slot, 417 With holes;

5, belt;

6, infrared sensor and preamplifier circuit, 7, analog signal processing circuit, 8, set the storage circuit, 9, the main CPU and peripheral circuits, 10, LED light display circuit, 11, power management communication power supply interface, 12, infrared light source Occurrence device, 13, external connection, 14, nasal tube.

detailed description

The principles and features of the present invention are described below in conjunction with the accompanying drawings. The invention is not intended to limit the scope of the invention.

As shown in FIG. 1 to FIG. 13, a multifunctional mainstream end-of-end carbon dioxide sensor includes a housing 4 and an adapter; the housing 4 is detachably connected to the adapter;

The inside of the casing 4 is a cavity, and is provided with a movement for detecting and analyzing end-tidal carbon dioxide; the infrared sensor end of the movement is correspondingly arranged with the emission end of the infrared light source of the movement, between the infrared sensor end and the emission end of the infrared light source. The housing 4 is provided with a groove 414; the groove 414 is connected with the adapter to form a gas chamber for accommodating and detecting carbon dioxide;

The groove 414 illustrated in Figs. 1 to 4 in the present invention is square, and the shape of the groove 414 may be appropriately changed in specific use.

The adapter includes an adapter and a vent disposed on the adapter; the adapter is detachably coupled to the recess 414, the vent being coupled to the nasal tube 14 or the breathing circuit.

As shown in FIGS. 8 and 9, the housing 4 can be divided into a housing 410 and a housing cover 411; the housing 410 and the housing cover 411 can be fixedly or detachably connected.

The movement includes an infrared light source generating device 12 and an infrared sensor for detecting carbon dioxide, the infrared sensor being a two-channel infrared sensor.

The recess 414 divides the cavity into a first cavity 412 and a second cavity 413. The first cavity 412 is provided with an infrared sensor, and the second cavity 413 is provided with an infrared light source generating device 12, and the infrared light source generating device 12 The transmitting end is opposite to the detecting end of the infrared sensor; the opposite side walls of the recess 414 are respectively provided with a first through hole 415, wherein one of the first through holes 415 is in communication with the first cavity 412, and the other first through hole 415 Communicating with the second cavity 413; the first through hole 415 communicating with the first cavity 412 is covered with the infrared permeable window, and the first through hole 415 communicating with the second cavity 413 is penetrated by the infrared light source of the infrared light source generating device Slice coverage.

Specifically, the movement includes an infrared sensor and a preamplifier circuit 6 (including an infrared sensor and a preamplifier circuit, the infrared sensor and the preamplifier circuit are electrically connected), an analog signal processing circuit 7, a storage circuit 8, and a main CPU and peripheral circuit 9, LED light display circuit 10, power supply tube The communication power supply interface 11 and the infrared light source generating device 12; the infrared sensor and preamplifier circuit 6 and the analog signal processing circuit 7, the setting storage circuit 8, the main CPU and the peripheral circuit 9, the power management communication power supply interface 11 and the infrared light source The generating device 12 is sequentially electrically connected by a flexible wire; the LED lamp display circuit 10 is electrically connected to the main CPU and the peripheral circuit 9 by a flexible wire; the infrared sensor and the preamplifying circuit 6, the analog signal processing circuit 7, and the setting storage circuit 8 are located in the first cavity 412; the power management communication power supply interface 11, the main CPU and peripheral circuit 9, the LED light display circuit 10 and the infrared light source generating device 12 are located in the second cavity 413, the power management communication power supply interface 11. The main CPU and peripheral circuits 9, the LED lamp display circuits are sequentially stacked together 10, and the LED lamp display circuit 10 is located on the side close to the observer.

As shown in FIG. 13, an external connection 13 is further disposed on the outside of the housing 4. The one end of the external connection 13 is electrically connected to the power management communication power supply interface 11, and the other end of the external connection 13 is electrically connected to the host. connection.

The adapter comprises a first adapter 1, a second adapter 2 and/or a third adapter 3. In the specific use, one housing 4 can be equipped with one or several adapters, and which adapter is used according to the specific situation. The first adapter 1, the second adapter 2 and the third adapter 3 each include a fitting portion, the fitting portion and the groove 414 form a gas chamber for accommodating carbon dioxide; and the opposite side walls of the fitting portion are provided with a second through hole 112, the second through hole 112 is covered with an infrared permeable film; the second through holes 112 of the fitting portion are respectively disposed corresponding to the first through holes 415 of the groove.

In specific use, for intubated patients, it is now mainly through the adapter and the cannula connection to collect end-tidal carbon dioxide. Due to the age of the monitored population, the size of the adapter is different. It is now divided into an adapter with a large amount of breath and an adapter with a small amount of breathing.

The following is introduced through some specific embodiments.

Embodiment 1 uses the first adapter in conjunction with the housing

As shown in FIG. 2 and FIG. 11, the first adapter 1 includes a first fitting portion 110 and two vents disposed on the first fitting portion 110, one of which is an air inlet 113 and the other one is open. The air port is an air outlet 114, and the air inlet 113 is correspondingly disposed with the air outlet 114. The first fitting portion 110 is an inner hollow square box structure for fitting with the groove 414. The second through holes 112 are respectively disposed on the two side walls of the square box structure, and the second through holes 112 are covered with the infrared permeable film; the two second through holes 112 are respectively disposed corresponding to the first through holes 415.

In use, the air inlet 113 is located close to the human face, and the air inlet 113 communicates with the nasal tube air outlet of the nasal tube 14; the two second through holes 112 of the first adapter 1 respectively correspond to the first suitable On both side walls of the fitting portion 110, the two side walls are provided with a slot 111 which is inserted into the slot 416 of the housing provided at the edge of the recess 414.

The housing 4 is also provided with a perforation 417 for threading the strap 5. In a specific setting, one of the use examples is that the strap 5 passes through the aperture, and the first adapter 110 on which the strap 5 is in contact may also be provided with a protrusion 115 for positioning the strap 5.

As shown in Fig. 6, the nasal tube 14 is a U-shaped nasal tube, the top of the U-shaped nasal tube is a nasal tube air inlet, located at the user's nostril; the bottom of the U-shaped nasal tube is a nasal tube air outlet, the nasal tube The air outlet is connected to the air inlet 113 of the first adapter 1.

In the specific use, after the strap is connected with the main structure of the multi-functional mainstream end-of-end carbon dioxide sensor, the wearing is carried out. FIG. 5 shows several wearing manners of the multi-functional mainstream end-of-end carbon dioxide sensor of the present invention. Take the side far from the user as the front and the side close to the user as the back. After wearing, the cover 411 is located on the front side, and the LED lamp display circuit 10 is located near the cover 411, so that the observer can observe the breathing condition, and the air inlet 113 faces upward and is connected with a U-shaped nasal tube. The axis is perpendicular to the axis of the housing 4.

The carbon dioxide exhaled by the user enters the air chamber through the nasal tube, and is detected by the movement, and the detection data is output to the host. If carbon dioxide is detected, the LED lamp display circuit 10 is displayed in a bright state, and if a change in carbon dioxide is detected, the LED lamp display circuit 10 synchronously changes to visually display the presence or absence of carbon dioxide.

The manner of setting the straps can take many forms, and is not limited to the wearing manner illustrated in the present invention, for example: 5A and 5B, which is a whole strap, the two ends of the strap are respectively fixed to the housing, and the strap is integrally sleeved on the head; and as shown in FIG. 5C and FIG. 5D, two straps are respectively disposed on the belt. Both sides of the housing. For each strap, one end is fixed to the housing by a connecting member, and one end of the strap can be sleeved on the ear, and the strap is also provided with a structure with adjustable length, which is convenient for the user to use.

Embodiment 2 uses the second adapter in conjunction with the housing

As shown in FIG. 3, the second adapter 2 is disposed perpendicular to the axis of the first through hole 415;

As shown in FIG. 7, the second adapter 2 has a tubular shape as a whole, and the second adapter 2 includes a second fitting portion 210 and a first vent pipe 211 and a second vent pipe 212 at both ends of the second fitting portion. The installation of the second adapter 2 usually has a large diameter of one port and a small diameter of one port. For example, the diameter of the first vent tube 211 may be larger or smaller than the diameter of the second vent tube 212.

The first vent pipe 211 and the second vent pipe 212 are respectively provided with vent ports; the first vent pipe 211 and the second vent pipe 212 are respectively communicated with the inside of the second fitting portion 210, the first vent pipe 211 and The second vent tube 212 is connected in the breathing circuit.

The second fitting portion 210 is a square groove-like structure for fitting with the groove 414. The two opposite side walls of the second fitting portion 210 are respectively provided with second through holes 112, and the two second through holes 112 are covered with an infrared permeable film. The two second through holes 112 are respectively disposed corresponding to the two first through holes 415. The two side walls of the second fitting portion 210 provided with the second through holes 112 are provided with slots which are inserted into the slots 416 of the housing to form a gas chamber for accommodating and detecting carbon dioxide.

The second adapter and the housing are adapted for use by a crowd of people who are intubating a large amount of breathing, such as an adult intubation population.

The versatile mainstream end-of-life carbon dioxide sensor is connected to the breathing circuit during specific use.

Take the side far from the user as the front and the side close to the user as the back. After wearing, the cover 411 is located on the front side, and the LED lamp display circuit 10 is located near the cover 411 for the observer to observe the breathing condition. The axis of the second adapter is perpendicular to the axis of the housing.

The carbon dioxide exhaled by the user is detected by the movement, and the detection data is output to the host. If monitoring When the carbon dioxide is turned on, the LED lamp display circuit 10 is displayed in a bright state. If the change in carbon dioxide is detected, the LED lamp display circuit 10 changes in synchronization to visually display the presence or absence of carbon dioxide.

Embodiment 3 uses the third adapter in conjunction with the housing

As shown in FIG. 4, the third adapter 3 includes an outer tube and an inner tube, the outer tube is outside the inner tube, and the outer tube has the same structure as the second adapter 2; the inner tube includes a first connecting member 310 and a The two connecting members 311 , one end of the first connecting member 310 and one end of the second connecting member 311 are connected by a buckle 313 .

As shown in Figure 10, the first connector is a tubular structure, the wall of the tube is provided with a hole 312;

As shown in FIG. 12, the second connecting member is a tubular structure which is sequentially divided into a hand portion 314, a third fitting portion 315 and a plug portion 316 in the axial direction; the third fitting portion 315 and the second portion The adapter portion 210 is disposed correspondingly, and the third adapter portion 315 is provided with a through hole, and the through hole is disposed corresponding to the position of the first through hole 415; the side wall of the plug portion 316 is provided with a buckle 313. The buckle 313 protrudes into the card hole 312 and is engaged with the card hole 312.

Since the inner tube is added to reduce the inner diameter of the third adapter 3, the third adapter cooperates with the housing and is suitable for use by a small intubation crowd, such as a child intubation population.

The versatile mainstream end-of-life carbon dioxide sensor is connected to the breathing circuit during specific use. The carbon dioxide exhaled by the user is detected by the movement, and the detection data is output to the host. If carbon dioxide is detected, the LED lamp display circuit 10 is displayed in a bright state, and if a change in carbon dioxide is detected, the LED lamp display circuit 10 synchronously changes to visually display the presence or absence of carbon dioxide.

The material and size of each member are not particularly limited in the present invention, and may be appropriately adjusted depending on the specific circumstances.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal connection of two components or two elements The interaction of the pieces, unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A multifunctional mainstream end-of-end carbon dioxide sensor, comprising: a housing (4) and an adapter; the housing (4) being detachably connected to the adapter;

The inside of the casing (4) is a cavity, and is provided with a movement for detecting and analyzing end-tidal carbon dioxide; the infrared sensor end of the movement is correspondingly arranged with the emitting end of the infrared light source of the movement, and the infrared sensor end and the emitting end of the infrared light source a groove (414) is disposed between the casing (4); the groove (414) is connected with the adapter to form a gas chamber for accommodating and detecting carbon dioxide;

The adapter includes an adapter and a vent disposed on the adapter; the adapter is detachably coupled to the recess (414), the vent being coupled to the nasal cannula (14) or the breathing circuit.
A multi-functional mainstream end-of-end carbon dioxide sensor according to claim 1, wherein

The movement includes an infrared light source generating device (12) and an infrared sensor for detecting carbon dioxide, the infrared sensor is a two-channel infrared sensor; the groove (414) divides the cavity into a first cavity (412) and a a second cavity (413), an infrared sensor is disposed in the first cavity (412), and an infrared light source generating device (12) is disposed in the second cavity (413), and the emitting end of the infrared light source generating device (12) and the infrared The detecting end of the sensor is opposite; the opposite side walls of the groove (414) are respectively provided with a first through hole (415), wherein one of the first through holes (415) communicates with the first cavity (412), and the other first The through hole (415) is in communication with the second cavity (413); the first through hole (415) communicating with the first cavity (412) is covered with a transparent infrared window, and the first cavity is connected to the second cavity (413) A through hole (415) is covered by the infrared permeable window of the infrared light source generating device.
A multifunctional mainstream end-of-end carbon dioxide sensor according to claim 2, wherein said adapter comprises a first adapter (1), a second adapter (2) and/or a third adapter (3);

The first adapter (1), the second adapter (2), and the third adapter (3) each include an adapting portion, The fitting portion and the groove (414) form a gas chamber for accommodating carbon dioxide; the opposite side walls of the fitting portion are provided with a second through hole (112), and the second through hole (112) is covered with an infrared permeable film; The second through holes (112) of the fitting portion are respectively disposed corresponding to the first through holes (415) of the groove.
A multifunctional mainstream end-of-end carbon dioxide sensor according to claim 3, wherein said first adapter (1) comprises a first adapter (110) and is disposed on the first adapter (110) Two vents, one of which is an air inlet (113), the other vent is an air outlet (114), and the air inlet (113) is corresponding to an air outlet (114); the first adapter (110) is an internal hollow box structure, in use, the air inlet (113) is located close to the human face, and the air inlet (113) is connected to the nasal tube outlet of the nasal tube (14); The two second through holes (112) of the adapter (1) are respectively located on the two side walls of the first fitting portion (110), and the two side walls are provided with a slot (111), the slot (111) ) is inserted into the edge of the groove (414).
A multifunctional mainstream end-of-end carbon dioxide sensor according to claim 3, wherein said second adapter (2) is disposed perpendicular to an axis of the first through hole (415);

The second adapter (2) includes a second fitting portion (210) and a first vent pipe (211) and a second vent pipe (212) located at both ends of the second fitting portion, the first vent pipe (211) and The second vent pipe (212) is respectively provided with a vent; the first vent pipe (211) and the second vent pipe (212) are respectively communicated with the inside of the second fitting portion (210), the first snorkel (211) and a second vent tube (212) are connected in the breathing circuit.
A multi-functional mainstream end-tidal carbon dioxide sensor according to claim 3, wherein said third adapter (3) comprises an outer tube and an inner tube, the outer tube sleeve is outside the inner tube, and the outer tube and the second tube are The adapter (2) has the same structure; the inner tube includes a first connecting member (310) and a second connecting member (311), and one end of the first connecting member (310) and one end of the second connecting member (311) are buckled (313) Connection.
A multifunctional mainstream end-of-end carbon dioxide sensor according to claim 6 The first connecting member (310) is a tubular structure, and the tube wall is provided with a hole (312);

The second connecting member (311) is a tubular structure which is sequentially divided into a hand portion (314), a third fitting portion (315) and a plug portion (316) in the axial direction; The matching portion (315) is disposed corresponding to the second fitting portion (210), the third fitting portion (315) is provided with a through hole and the through hole is disposed corresponding to the position of the first through hole (415); A buckle (313) is disposed on the side wall of the plug portion (316), and the buckle (313) protrudes into the card hole (312) and is engaged with the card hole (312).
The multifunctional mainstream end-of-end carbon dioxide sensor according to any one of claims 2 to 7, wherein the movement further comprises a preamplifier circuit, an analog signal processing circuit (7), and a setting storage circuit (8). a main CPU and a peripheral circuit (9), an LED lamp display circuit (10), and a power management communication power supply interface (11); the infrared sensor is electrically connected to the preamplifier circuit, the preamplifier circuit and the analog signal processing circuit (7), the storage circuit (8), the main CPU and the peripheral circuit (9), the power management communication power supply interface (11) and the infrared light source generating device (12) are sequentially connected by a flexible wire; the LED light display circuit ( 10) electrically connected to the main CPU and the peripheral circuit (9) through a flexible line; the infrared sensor and the preamplifier circuit are stacked; the infrared sensor, the preamplifier circuit, the analog signal processing circuit (7), and the setting storage The circuit (8) is located in the first cavity (412); the power management communication power supply interface (11), the main CPU and the peripheral circuit (9), the LED light display circuit (10) and the infrared light source generating device (12) are located at In the second cavity (413), the power management communication power supply interface (11), The main CPU and the peripheral circuit (9) and the LED lamp display circuit are sequentially stacked together (10), and the LED lamp display circuit (10) is located on the side close to the observer.
A multi-functional mainstream end-of-end carbon dioxide sensor according to claim 8, characterized in that an external connection (13) is provided outside the casing (4), and one end of the external connection (13) and the power supply The communication power supply interface (11) is electrically connected, and the other end of the external connection (13) is electrically connected to the host.
Multifunctional mainstream end-tidal carbon dioxide sensor according to any one of claims 1-7, characterized in that the casing (4) is further provided with a hole for piercing the belt (5); the nasal tube (14) The U-shaped nasal tube, the top of the U-shaped nasal tube is the nasal tube air inlet, located at the user's nostril; the bottom of the U-shaped nasal tube is the nasal tube air outlet, and the nasal tube outlet is connected with the adapter's vent.