CN211188648U - Intubation device based on concentration distribution of end-tidal carbon dioxide - Google Patents

Abstract

The utility model relates to a medical instrument especially relates to an intubation device based on end-tidal carbon dioxide concentration distribution. The utility model provides an intubation device includes flexible intubate, detection device and display device, flexible intubate includes the body, be equipped with flexible tube core in the body, be equipped with a plurality of air guide channel in the flexible tube core, detection device includes gaseous introduction end and a plurality of pipe body, a plurality of pipe bodies and a plurality of air guide channel are independently through gaseous introduction end intercommunication separately, all be equipped with in proper order according to gaseous flow direction on each pipe body and strain wet device, carbon dioxide concentration detection spare and gas drive arrangement, detection device still includes the computational device. The utility model provides an intubation device can judge tracheal accurate position through the distribution of multichannel carbon dioxide according to the carbon dioxide gas concentration height of patient's exhalation to give audio-visual guide to the operator, guarantee that the intubation process has the highest accuracy and intelligent degree.

Description

An intubation device based on end-tidal carbon dioxide concentration distribution

technical field

The utility model relates to a medical device, in particular to an intubation device based on the end-tidal carbon dioxide concentration distribution.

Background technique

Tracheal intubation refers to the technique of inserting a special endotracheal tube into the trachea through the glottis, which is called tracheal intubation. condition. In the field of emergency medicine, emergency tracheal intubation technology has become an important measure in the rescue process of cardiopulmonary resuscitation and critically ill patients with respiratory dysfunction. Effective artificial or mechanical ventilation is directly related to whether the patient can maintain oxygenation and life safety.

Conventional tracheal intubation mainly adopts the clear vision intubation method through the oral cavity or through the nasal cavity, that is, the use of laryngoscopy or fiberoptic bronchoscopy to determine the position of the catheter and confirm that the catheter has passed through the glottis and entered the trachea. gold standard". In most cases, routinely trained anesthesiologists can perform and complete endotracheal intubation successfully. However, in clinical practice, when patients suffer from diseases of the head, neck and trachea, or have high risk factors for difficult tracheal intubation, including a history of cervical radiotherapy, snoring, and mandibular retraction, the patient's glottis exposure is poor, and Difficulty or failure of endotracheal intubation seriously threatens the life safety of patients. With the continuous development of visualization technology, video laryngoscope and fiberoptic bronchoscope have been widely used in the management of difficult airways. However, due to the influence of various conditions such as tissue swelling, secretions, and bleeding on the visual field, the visual intubation tool still has obvious application limitations.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an intubation device based on the end-tidal carbon dioxide concentration distribution, which is used to solve the problems in the prior art.

In order to achieve the above purpose and other related purposes, one aspect of the present utility model provides an intubation device based on end-tidal carbon dioxide concentration distribution, including: a flexible intubation tube, a detection device and a display device, the flexible intubation tube includes a tube body , the tube body is provided with a flexible tube core, the flexible tube core is provided with a plurality of air guide channels, the extension direction of the plurality of air guide channels is consistent with the extension direction of the tube body, the plurality of air guide channels The air guide channels are circumferentially distributed in the flexible tube core, and the detection device includes a gas introduction end and a plurality of duct pipe bodies, and the plurality of duct pipe bodies and the plurality of air guide channels are independently communicated through the gas introduction ends, and each According to the flow direction of the gas, the pipe body of the conduit is provided with a moisture filtering device, a carbon dioxide concentration detection part and a gas driving device in sequence. The detection device further includes a calculation device, and the carbon dioxide concentration detection part is electrically connected with the calculation device. The device is electrically connected to the display device.

In some embodiments of the present invention, the inner cavity of the tube body matches the shape of the flexible tube core.

In some embodiments of the present invention, the flexible tube core includes a tube core body and a flexible support member, and the extension direction of the flexible support member is consistent with the extension direction of the tube body.

In some embodiments of the present invention, the flexible die includes a plurality of flexible supports, preferably more than four flexible supports, and the plurality of flexible supports are circumferentially distributed in the flexible die.

In some embodiments of the present invention, the flexible tube core is provided with more than four air guide channels.

In some embodiments of the present invention, the diameter of the air guide channel is 1/10 to 1/3 of the diameter of the flexible tube core.

In some embodiments of the present invention, the flexible cannula is detachably connected to the detection device.

Another aspect of the present invention provides an intubation setting method, comprising: using the intubation device based on the end-tidal carbon dioxide concentration distribution to adjust the flexible intubation position according to the end-tidal carbon dioxide concentration in each air guide channel.

In some embodiments of the present invention, according to the end-tidal carbon dioxide concentration in each air guide channel, the flexible cannula is extended to the side with a higher end-tidal carbon dioxide concentration.

In some embodiments of the present invention, the method further includes: judging whether the flexible cannula has reached the expected position through the difference in end-tidal carbon dioxide concentration in each airway channel.

Description of drawings

FIG. 1 shows a schematic diagram of the overall structure of the present invention.

FIG. 2 shows a schematic diagram of the flexible cannula of the present invention.

FIG. 3 is a schematic diagram of the detection device of the present invention.

Component label description

1 Flexible cannula

11 Tube body

12 Flexible Die

121 Die body

122 Flexible support

13 Air channel

2 Detection device

21 Gas inlet

22 Catheter body

23 Moisture filter

24 Carbon dioxide concentration detector

25 Gas drive

26 Computing Devices

3 Display device

Detailed ways

The embodiments of the present utility model are described below by specific specific examples, and those who are familiar with the technology can easily understand other advantages and effects of the present utility model from the contents disclosed in this specification.

See Figures 1 through 3. It should be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with this technology, and are not used to limit the implementation of the present invention. Therefore, it does not have technical substantive significance. Any modification of structure, change of proportional relationship or adjustment of size should still fall in The technical content disclosed by the present invention should be within the scope that can be covered. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The applicable scope of the utility model and the change or adjustment of its relative relationship shall be regarded as the applicable scope of the present utility model without substantially changing the technical content.

A first aspect of the present utility model provides an intubation device based on end-tidal carbon dioxide concentration distribution, as shown in FIGS. 1 to 3 , comprising: a flexible intubation 1, a detection device 2 and a display device 3, the flexible intubation 1 includes a tube body 11, the tube body 11 is provided with a flexible tube core 12, the flexible tube core 12 is provided with a plurality of air guide channels 13, the extension direction of the plurality of air guide channels 13 and the tube The extension direction of the body body 11 is consistent, the plurality of air guide channels 13 are circumferentially distributed in the flexible tube core 12, and the detection device 2 includes a gas introduction end 21 and a plurality of conduit pipe bodies 22, the plurality of conduit pipes The body 22 and the plurality of air guide passages 13 are independently communicated through the gas introduction end 21, and each conduit body 22 is sequentially provided with a moisture filtering device 23, a carbon dioxide concentration detector 24 and a gas driving device 25 according to the flow direction of the gas. The detection device 2 further includes a calculation device 26 , the carbon dioxide concentration detector 24 is electrically connected to the calculation device 26 , and the calculation device 26 is electrically connected to the display device 3 . When the intubation device provided by the present invention is in use, the flexible intubation tube 1 can be inserted into the respiratory tract of the subject, gradually approaching the airway, and then an appropriate amount of gas can be released from the respiratory tract of the subject through the gas driving device 25. It is led out through the air guide channel 13, and the gas drawn from each air guide channel 13 is further introduced into each corresponding conduit pipe body 21, so that the carbon dioxide concentration of the gas in each conduit pipe body 21 can be detected by the carbon dioxide concentration detector 24. The electrical signal detected by the carbon dioxide concentration detector 24 can be transmitted to the computing device 26 , and the result obtained by the carbon dioxide concentration detector 24 is further displayed on the display device 3 through the computing device 26 . When the gas is drawn out, due to the existence of a plurality of air guide channels 13 and the circumferential distribution of the plurality of air guide channels 13 in the flexible tube core 12 , the determination can be made according to the concentration of carbon dioxide in the gas drawn out from each air guide channel 13 . The valve position, for example, in the gas drawn from each air guide channel 13, the gas with higher carbon dioxide concentration is considered to be the inlet of the air guide channel 13 corresponding to the gas is closer to the valve position, and the flexible cannula 1 can be extended to this side. , and gradually reach the desired position, so as to achieve a correct and precise intubation process.

In the intubation device based on end-tidal carbon dioxide concentration distribution provided by the present invention, as shown in FIG. The flexible tube core 12 itself usually has a certain elasticity, and its extension direction can be deformed in a generic manner, so that while the tube body 11 can be effectively supported, the extension direction of the flexible cannula 1 can be deformed in a generic manner as a whole. To have a certain angle and/or attitude. The tube body 11 is usually a hollow tube body with a certain elasticity, so that after the intubation is successful and the inner flexible tube core 12 is withdrawn, it can still maintain a hollow shape, so that the subject can be sent to the subject through the channel. Provide oxygen. In a specific embodiment of the present invention, the tube body 11 may be an airway required for various commonly used anesthesia surgical intubations in the art. The selection of the outer diameter of the tube body 11 usually depends on the size of the trachea of the subject. For example, the trachea of an adult is usually thicker, and the outer diameter of the corresponding tube body 11 is also larger, while the trachea of a child is usually larger. If it is thinner, the outer diameter of the corresponding tube body 11 is also smaller. Generally speaking, the outer diameter of the tube body 11 can be 2-10mm, 2-3mm, 3-4mm, 4-5mm, 5mm ~6mm, 6~7mm, 7~8mm, 8~9mm, or 9~10mm. The inner cavity of the tube body 11 is usually matched with the shape of the flexible tube core 12. For example, the outer diameter of the flexible tube core 12 may be slightly smaller than the inner diameter of the tube body 11, and the inner wall of the tube body 11 may be compatible with the flexible tube core. The outer walls of the tubes 12 are in contact with each other, so that the tube body 11 can be effectively supported by the flexible tube core 12 . The inner diameter of the tube body 11 is generally slightly smaller than the outer diameter of the tube body 11, and may be 1-9mm, 1-2mm, 2-3mm, 3-4mm, 4-5mm, 5-6mm, 6-7mm, 7 to 8mm, or 8 to 9mm. The flexible die 12 may generally include a die body 121 and a flexible support 122. The die body 121 usually has a certain elasticity, so that the die body 11 can be effectively supported. In a specific embodiment of the present invention, The material of the die body 121 may be silicon rubber or the like. The extension direction of the flexible support member 122 is consistent with the extension direction of the tube body 11, and can be deformed in an exemplary manner, so that the extension directions of the flexible tube core 12 and the flexible cannula 1 can be deformed in an exemplary manner as a whole, so as to have an exemplary deformation. A certain angle and/or attitude. The flexible die 12 may include a plurality of flexible supports 122, and the plurality of flexible supports 122 are circumferentially distributed in the flexible die 12, so as to provide a good support effect. In a specific embodiment of the present invention, the flexible support 122 may be a tensile steel wire or the like. In another specific embodiment of the present invention, more than four flexible supports 122 may be included, and the plurality of flexible supports 122 are evenly distributed in the circumferential direction of the flexible die 12 .

In the intubation device based on the end-tidal carbon dioxide concentration distribution provided by the present invention, as shown in FIG. It can be distributed in the direction of the tube body and can be located around the tube body as much as possible, so that the gas on each side of the air inlet of the flexible tube core 12 can be collected and the existence of blind spots can be avoided. The conductor channel 13 generally has a suitable diameter so that a suitable amount of gas can be drawn from the respiratory tract. In a specific embodiment of the present invention, the flexible tube core 12 may be provided with more than four air guide channels 13 , and the plurality of air guide channels 13 are evenly distributed in the circumferential direction of the flexible tube core 12 . In another specific embodiment of the present invention, the diameter of the air guide channel 13 is generally ≤ 1/3 of the diameter of the flexible tube core 12, so as to ensure that a plurality of air guide channels 13 can be stably arranged in the flexible tube core 12, The diameter of the air guide channel 13 may be 1/10-1/3, 1/10-1/8, 1/8-1/6, 1/6-1/4 of the diameter of the flexible tube core 12, or 1/4～1/3.

In the intubation device based on the end-tidal carbon dioxide concentration distribution provided by the present invention, as shown in FIG. 3 , the flexible cannula 1 is detachably connected to the detection device 2, thereby facilitating the replacement or cleaning of the flexible cannula, eliminating the need for Disinfection and other tedious links, improve operational efficiency. In a specific embodiment of the present invention, the gas inlet end 21 of the detection device 2 can be buckled with the gas outlet end of the flexible cannula 1. At the gas introduction end 21 of the detection device 2, after the flexible cannula 1 is connected to the detection device 2, the plurality of conduit bodies 22 and the plurality of air passages 13 are in independent communication with each other, that is, one conduit body 22 is connected A gas guide channel 13, so that the gas to be detected can be clearly avoided to affect each other. The installation positions of the plurality of conduit bodies 22 usually need to correspond to the air guide channels 13, and the butt joints of the two need to be matched, so that the gas to be detected in each air guide channel 13 can be introduced into the corresponding conduit bodies. 22. In a specific embodiment of the present invention, the catheter tube body 22 can be a glass tube, which has a certain rigidity, so that the tube core body 121 with a certain elasticity can be sleeved on the catheter tube body 22.

二氧化碳传感器(GSS)。所述气体驱 动装置25主要用于驱动管道中气体的流动，当导管管体22和导气通道13连通时，通过气体 驱动装置25可以将患者呼吸道中的适量气体引入导气通道13中，并进入导管管体22以供二 氧化碳浓度检测件24进行检测。各导管管体22上的气体驱动装置25可以是独立分离的，也 可以是整合在一起并具有多个通道与导管管体22一一对应。在本实用新型一具体实施例中， 所述气体驱动装置25可以是气泵等。In the intubation device based on the end-tidal carbon dioxide concentration distribution provided by the present invention, as shown in FIG. 3 , each conduit body 22 is sequentially provided with a moisture filtering device 23 and a carbon dioxide concentration detector 24 according to the flow direction of the gas. and gas drive 25. The moisture filtering device 23 is mainly used to remove water in the gas to be detected, so that subsequent detection errors can be avoided. The gas to be detected can be introduced into the moisture filtering device 23 to remove the water therein, and can be further led out of the moisture filtering device. 23, for subsequent detection. The moisture filtering devices 23 on each conduit body 22 may be independent and separate, or may be integrated together and have a plurality of channels in one-to-one correspondence with the conduit bodies 22 . In a specific embodiment of the present invention, the moisture filtering device 23 may be a moisture filter, more specifically a HEPA filter (UNDIS MEDICAL, GLQ-01-03). The carbon dioxide concentration detector 24 is mainly used to detect the concentration of carbon dioxide in the gas to be measured in the corresponding conduit body 22, so that the data information obtained by the test can be transmitted to the computing device 26 and the display device 3, so as to guide the flexibility. Intubation operation. The gas to be detected extracted from the moisture filtering device 23 can be further introduced into the carbon dioxide concentration detection part 24 , and the gas after the measurement is completed can be further led out of the carbon dioxide concentration detection part 24 . The carbon dioxide concentration detectors 24 on each conduit body 22 may be independent and separate, or may be integrated together and have a plurality of channels in one-to-one correspondence with the conduit bodies 22 . In a specific embodiment of the present invention, the carbon dioxide concentration detector 24 may be a carbon dioxide photoelectric sensor, a carbon dioxide MEMS sensor, etc., and more specifically, may be

Carbon dioxide sensor (GSS). The gas driving device 25 is mainly used to drive the flow of gas in the pipeline. When the catheter tube 22 and the air guide channel 13 are connected, an appropriate amount of gas in the patient's respiratory tract can be introduced into the air guide channel 13 through the gas driving device 25, and Enter the catheter tube body 22 for detection by the carbon dioxide concentration detector 24 . The gas driving devices 25 on each conduit body 22 may be independent and separate, or may be integrated together and have a plurality of channels corresponding to the conduit bodies 22 one-to-one. In a specific embodiment of the present invention, the gas driving device 25 may be an air pump or the like.

In the intubation device based on the end-tidal carbon dioxide concentration distribution provided by the present invention, as shown in FIG. , the computing device 26 can be electrically connected with the display device 3, and the electrical signal detected by the carbon dioxide concentration detector 24 can be transmitted to the computing device 26, and after the signal is converted by the computing device, the relevant information is displayed on the display device 3. show. The computing device may be, for example, a computer, a single-chip microcomputer, etc., and the computing device may generally include a processor, a memory, and the like, and the display device may be, for example, a display. Those skilled in the art can choose an appropriate method to electrically connect the carbon dioxide concentration detecting element 24 with the computing device 26 and the computing device 26 and the display device 3. In a specific embodiment of the present invention, the carbon dioxide concentration detecting element 24 is connected to the The computing device 26, the computing device 26 and the display device 3 may be connected by cables, preferably flexible cables.

A second aspect of the present invention provides an intubation setting method, comprising: using the intubation device based on the end-tidal carbon dioxide concentration distribution provided by the first aspect of the present invention, according to the end-tidal carbon dioxide concentration in each air guide channel 13 Adjust the position of flexible cannula 1. Specifically, it may include: 1) inserting the flexible cannula 1 into the respiratory tract of the subject; 2) extracting an appropriate amount of gas to be detected through each air guide channel 13 and further into the detection device 2; 3) obtaining each guide Carbon dioxide concentration of the gas in the air channel 13; 4) Extend the flexible cannula 1 to the side with a higher end-tidal carbon dioxide concentration, and gradually reach the desired position. In the intubation setting method provided by the present invention, during operation, the flexible intubation 1 can be inserted into the respiratory tract of the subject, gradually approaching the airway, and then an appropriate amount of gas can be released from the respiratory tract of the subject through the gas driving device 25. It is led out through the air guide channel 13, and the gas drawn from each air guide channel 13 is further introduced into each corresponding conduit pipe body 21, so that the carbon dioxide concentration of the gas in each conduit pipe body 21 can be detected by the carbon dioxide concentration detector 24. The concentration of the gas is detected, and the carbon dioxide concentration data of the gas in each conduit pipe body 21 is further displayed on the display device 3 by the computing device. When the gas is drawn out, due to the existence of a plurality of air guide channels 13 and the circumferential distribution of the plurality of air guide channels 13 in the flexible tube core 12 , the determination can be made according to the concentration of carbon dioxide in the gas drawn out from each air guide channel 13 . The valve position, for example, in the gas drawn from each air guide channel 13, the gas with higher carbon dioxide concentration is considered to be the inlet of the air guide channel 13 corresponding to the gas is closer to the valve position, and the flexible cannula 1 can be moved to the end of expiration. The side with the higher carbon dioxide concentration is extended and gradually reaches the desired position, enabling a correct and precise intubation process.

In the intubation setting method provided by the present invention, the method may further include: judging whether the flexible intubation 1 has reached the expected position according to the difference in end-tidal carbon dioxide concentration in each air guide channel 13 . When the flexible cannula 1 does not reach the expected position, since each air guide channel 13 enters the trachea, the carbon dioxide concentration in each channel will be quite different. When the flexible cannula 1 reaches the expected position, the The inhalation end of the gas has passed through the glottis and into the trachea, so the carbon dioxide concentration in each channel will be basically the same.

The method for judging the relationship between the carbon dioxide concentration in each air guide channel 13 should be known to those skilled in the art, for example, it may include: 1) providing the carbon dioxide concentration in each air guide channel 13; 2) calculating all the air guide channels The average value of the carbon dioxide concentration in the channel 13; 3) Calculate the difference between the carbon dioxide concentration and the average value of the carbon dioxide concentration in each air guide channel 13, according to the difference, you can know which air guide channel 13 has the highest carbon dioxide concentration, Or whether the carbon dioxide concentration in each channel is already substantially the same. In a specific embodiment of the present invention, the method for judging the relationship between the carbon dioxide concentration in each air guide channel 13 may include: 1) Obtaining the concentration information of carbon dioxide gas in each air guide channel 13, for the 4-way air guide channel 13 , can obtain 4 carbon dioxide gas concentration values C_Up, C_Down, C_Left, C_Right; 2) Calculate the average value of carbon dioxide gas concentration of all channels, namely: C_Aver=(C_Up+C_Down+C_Left+C_Right)/4; 3) Calculate each The difference between the channel carbon dioxide gas concentration and the average value, namely: ΔC_Up=C_Up-C_Aver, ΔC_Down=C_Down-C_Aver, ΔC_Left=C_Left-C_Aver, ΔC_Right=C_Right-C_Aver. In another specific embodiment of the present invention, when the difference between the carbon dioxide gas concentration and the average value of all channels is less than a certain threshold, it indicates that the air guide channel 13 has reached the ideal position, and the intubation process is over. For example, the threshold can be Take 10% of the average.

The intubation device based on the end-tidal carbon dioxide concentration distribution provided by the utility model can judge the exact position of the trachea through the multi-channel carbon dioxide distribution according to the concentration of carbon dioxide gas exhaled by the patient, and give intuitive guidance to the operator to ensure that The intubation process has the highest accuracy and intelligence.

To sum up, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims (8)

1. An intubation device based on end-tidal carbon dioxide concentration distribution, characterized in that, comprising: a flexible intubation (1), a detection device (2) and a display device (3), the flexible intubation (1) comprising: A pipe body (11), a flexible tube core (12) is arranged in the tube body (11), and a plurality of air guide channels (13) are arranged in the flexible tube core (12), The extension direction of the air channel (13) is consistent with the extension direction of the tube body (11), the plurality of air guide channels (13) are circumferentially distributed in the flexible tube core (12), and the detection device (2) includes A gas introduction end (21) and a plurality of conduit pipe bodies (22), the plurality of conduit pipe bodies (22) and the plurality of gas guide passages (13) are independently communicated through the gas introduction end (21), and each conduit pipe The body (22) is provided with a moisture filtering device (23), a carbon dioxide concentration detecting element (24) and a gas driving device (25) in sequence according to the flow direction of the gas, and the detecting device (2) further includes a computing device (26) , the carbon dioxide concentration detecting element (24) is electrically connected with the computing device (26), and the computing device (26) is electrically connected with the display device (3). 2 . The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 1 , wherein the inner cavity of the tube body ( 11 ) matches the shape of the flexible tube core ( 12 ). 3 . 3. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 1, wherein the flexible tube core (12) comprises a tube core body (121) and a flexible support (122), and the flexible tube core (12) comprises a tube core body (121) and a flexible support (122). The extension direction of the flexible support (122) is consistent with the extension direction of the pipe body (11). 4. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 3, wherein the flexible tube core (12) comprises a plurality of flexible supports (122). 5. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 3, wherein the flexible tube core (12) comprises four or more flexible supports (122), and the plurality of flexible supports Pieces (122) are distributed circumferentially in the flexible die (12). 6. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 1, wherein more than four air guide channels (13) are provided in the flexible tube core (12). 7. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 1, wherein the diameter of the air guide channel (13) is 1/10-1/10 of the diameter of the flexible tube core (12). 3. 8. The intubation device based on end-tidal carbon dioxide concentration distribution according to claim 1, wherein the flexible intubation tube (1) is detachably connected to the detection device (2).

Images