CN215841050U - Nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide - Google Patents
Nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide Download PDFInfo
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- CN215841050U CN215841050U CN202122186138.3U CN202122186138U CN215841050U CN 215841050 U CN215841050 U CN 215841050U CN 202122186138 U CN202122186138 U CN 202122186138U CN 215841050 U CN215841050 U CN 215841050U
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Abstract
The utility model provides a nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide, which comprises a nasal catheter, a ventilation catheter, an inhalation one-way valve, an exhalation one-way valve, a filter, an oxygen interface and an end-tidal carbon dioxide device interface. The ventilation catheter is sequentially connected with an oxygen interface, an inspiration one-way valve, a nasal catheter, an expiration one-way valve, a filter and an end-tidal carbon dioxide device interface; the ventilation directions of the inspiration one-way valve and the expiration one-way valve are consistent; the oxygen interface is used for connecting an oxygen pipeline so as to supply oxygen to a patient; the capnography interface is for coupling to a capnography sensor device for measuring a patient's capnography value. The utility model has simple structure and lower cost, can be used as a disposable product, and reduces the secondary pollution to patients.
Description
Technical Field
The utility model relates to the field of medical instruments for nasal catheter oxygen inhalation, in particular to a novel nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide.
Background
There is a good correlation between the end-tidal carbon dioxide partial pressure (PetCO 2) and the arterial blood carbon dioxide partial pressure, which can be reflected by continuously monitoring its dynamics. Capnography is an important indicator of assessing the state of ventilation of a patient and is one of the important parameters for ensuring patient safety. End-tidal carbon dioxide partial pressure has been considered as the sixth basic vital sign, except for body temperature, respiration, pulse, blood pressure, arterial oxygen saturation. At present, more and more non-artificial airway patients need to monitor end-tidal carbon dioxide so as to continuously evaluate lung ventilation and lung ventilation functions and reflect changes of circulation and metabolism functions, and although end-tidal carbon dioxide is conventionally monitored for patients with tracheal intubation or other artificial airways, the monitoring of the end-tidal carbon dioxide for patients with spontaneous respiration cannot be formally carried out in clinical work in a starting and groping stage. The reason is that the partial pressure of end-tidal carbon dioxide is only used as an observation index of a breathing machine or an anesthesia machine at first, and in order to monitor the ventilation condition of a patient with an artificial airway, the design of the probe for the end-tidal carbon dioxide, whether a mainstream type or a bypass type, is fixed on an anesthesia threaded pipe connector or a breathing filter in a spiral mode, and the end-tidal carbon dioxide probe cannot be connected to a spontaneous breathing patient in a conventional mode, so that the application of the end-tidal carbon dioxide to the spontaneous breathing patient is limited. Although some medical personnel are aware of the importance of monitoring the partial pressure of end-tidal carbon dioxide for spontaneously breathing patients, there is no specific means for measurement, and it is now common practice in clinical practice to insert a bypass-type end-tidal carbon dioxide sampling tube into one of the patient's nasal cavities, but this often presents problems: when the device is placed into the patient, the sampling tube is easy to fall off, so that the measurement cannot be carried out or the measurement result is inaccurate, and the device is placed too deeply, so that on one hand, the stimulation to the nasopharynx of the patient is large, and on the other hand, the device can block the tube diameter due to the large amount of secretion of the nasopharynx, and the accuracy of the monitoring result is influenced. The experience of the patient is not good due to the monitoring means, and the bypass end-tidal carbon dioxide sampling tube is generally not disposable, so that the bypass end-tidal carbon dioxide sampling tube can only be simply sterilized after being used up every time, and the cross infection of the patient is easily caused.
Application number 202110395070.1 provides a disposable single nasal catheter oxygen inhalation device with end-tidal carbon dioxide monitoring, which solves the problems of single nasal oxygen inhalation and single nasal monitoring, and has good fixation of a probe of the end-tidal carbon dioxide, but when a patient exhales, an oxygen pipeline can continuously provide oxygen to the nasal cavity of the patient, and at the moment, part of the oxygen can be mixed in the exhalation of the patient, so that the monitoring value of the end-tidal carbon dioxide of the patient is inaccurate; and inserting both tubes into the patient's nasal cavity at the same time may also cause a greater pressure or provide insufficient oxygen to the patient's nasal cavity. Therefore, a simple, economical and practical device suitable for most people to supply oxygen and sample end-tidal carbon dioxide simultaneously and accurately measure the partial pressure of the end-tidal carbon dioxide is needed to be researched.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the technical center, the utility model provides the nasal catheter oxygen inhalation device capable of monitoring the end-tidal carbon dioxide, which not only is more convenient for fixing a probe of the end-tidal carbon dioxide, but also can more accurately measure the content of the end-tidal carbon dioxide of a patient.
The utility model is realized according to the following technical scheme:
a nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide comprises an airway tube, and an oxygen interface, an inhalation one-way valve, a nasal catheter, an exhalation one-way valve and an end-tidal carbon dioxide device interface which are sequentially connected with the airway tube in series; wherein the breathing direction of the inspiration one-way valve is consistent with that of the expiration one-way valve; the oxygen interface is used for connecting an oxygen pipeline so as to supply oxygen to a patient; the end-tidal carbon dioxide device interface is used for connecting an end-tidal carbon dioxide device so as to measure the end-tidal carbon dioxide value of the patient.
Further scheme: the inhalation one-way valve is in an open state when the patient inhales, so that oxygen can enter the nasal cavity of the patient from the oxygen interface.
Further scheme: the expiratory check valve is in an open state when the patient exhales, such that carbon dioxide enters the end-tidal carbon dioxide device interface.
As an optimization scheme of the utility model: a filter is connected in series on the ventilation conduit between the end-tidal carbon dioxide device interface and the expiration one-way valve.
The preferable scheme is as follows: the filter adopts a water vapor filter with a sterilization function.
As an optimization scheme of the utility model: an air outlet pipeline communicated with the outside air is connected in series on the ventilation catheter between the expiration one-way valve and the filter; or an air outlet pipeline communicated with the outside air is connected in series on the ventilation conduit between the end-tidal carbon dioxide device interface and the filter.
As an optimization scheme of the utility model: and an air outlet pipeline communicated with the outside air is connected in series on the ventilation conduit between the expiration one-way valve and the end-tidal carbon dioxide device interface.
The preferable scheme is as follows: the nasal catheter is a single-head nasal catheter and is only inserted into a single nasal cavity of a patient.
The preferable scheme is as follows: the nasal catheter is a double-head nasal catheter and is inserted into two nasal cavities of a patient.
The preferable scheme is as follows: the nasal catheter is a nose cover which covers the nose of the patient, so that the nose part of the patient is isolated from the outside.
The utility model has the beneficial effects that:
firstly, the utility model adopts the way that the inspiration check valve is matched with the expiration check valve, and the communication part of the ventilation catheter is continuously changed in the inspiration and expiration processes of the patient, thereby being beneficial to the patient to absorb oxygen, preventing excessive oxygen from mixing into the gas exhaled by the patient, ensuring that the gas exhaled by the patient is purer, and the detection of the end-tidal carbon dioxide device on the exhaled gas is more accurate.
Second, the gas outlet pipeline does benefit to the gaseous emission of patient's expiration, because end-expiratory carbon dioxide device only needs to detect just can obtain the result to patient's fractional expiration, so patient's most exhale from the gas outlet pipeline directly discharge to the atmosphere in, thereby can not let the patient with the breathing out of big strength and reduce patient's sense of oppression.
The bypass type end-tidal carbon dioxide sampling tube is simple in structure, can be used for one time, has a characteristic channel for both inspiration and expiration, and is not disposable generally, so that the water vapor filter arranged in front of the interface of the end-tidal carbon dioxide device can improve the detection accuracy rate of the end-tidal carbon dioxide device on exhaled gas, filter most bacteria and reduce pollution to the end-tidal carbon dioxide sampling tube. After the use, the device is discarded, and the next patient cannot be influenced; the bypass type end-tidal carbon dioxide sampling tube can be sterilized and then supplied to the next patient, the condition that the end-tidal carbon dioxide sampling tube is not completely sterilized can occur, and the health of the patient can be protected because the passage from the end-tidal carbon dioxide sampling tube to the nasal catheter is closed when the patient inhales.
The device can realize the accurate detection of oxygen inhalation and end-expiratory carbon dioxide of the single nasal catheter, and is suitable for the condition of entering examination equipment or operation from a single nasal cavity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic structural view of the air outlet pipeline between the check valve and the water vapor filter according to the present invention;
fig. 2 is a schematic structural diagram of the air outlet pipeline between the interface of the end-tidal carbon dioxide device and the water vapor filter.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, a nasal catheter oxygen inhalation device capable of performing end-tidal carbon dioxide monitoring comprises a nasal catheter 1, an airway catheter 2, an inhalation one-way valve 3, an exhalation one-way valve 4, a filter 5, an oxygen interface 6 and an end-tidal carbon dioxide device interface 7.
The ventilation catheter 2 is sequentially connected with an oxygen interface 6, an inspiration one-way valve 3, a nasal catheter 1, an expiration one-way valve 4, a water vapor filter 5 and an end-tidal carbon dioxide device interface 7. The breathing direction of the inspiration one-way valve 3 is consistent with the breathing direction of the expiration one-way valve 4. The oxygen port 6 is used for connecting an oxygen line to supply the patient. The end-tidal carbon dioxide device interface 7 is used to connect the end-tidal carbon dioxide device in order to measure the end-tidal carbon dioxide value of the patient.
One embodiment is as follows: with continued reference to figure 1, the section of the airway tube 2 between the expiratory check valve 4 and the filter 5 is provided with an outlet line 8 communicating with the outside air.
In another embodiment: with continued reference to figure 2, the section of the airway tube 2 between the end-tidal carbon dioxide unit interface 7 and the filter 5 is provided with an outlet conduit communicating with the outside air.
The preferable scheme is as follows: the filter 5 is a water vapor filter with a sterilization function.
It should be noted that the inspiration check valve 3 is opened only when the patient inhales, so that oxygen can smoothly enter the nasal cavity of the patient from the oxygen interface 6. The expiratory check valve 4 is only opened when the patient exhales, so that carbon dioxide can smoothly enter the end-tidal carbon dioxide device interface 7.
The preferable scheme is as follows: the inspiration check valve 3 and the expiration check valve 4 can be valves with one-way ventilation, such as a diaphragm valve, a duckbill valve and the like.
The preferred embodiments of the above embodiments with respect to nasal catheters are given below:
the first embodiment is as follows: the nasal catheter 1 is a single-head nasal catheter and is inserted into only a single nasal cavity of a patient.
Example two: the nasal catheter 1 is a double-head nasal catheter and is inserted into two nasal cavities of a patient.
Example three: the nasal catheter 1 is a nose mask which is not inserted into the nasal cavity of a patient, and just isolates the nose part of the patient from the outside like an image mask.
The specific implementation process is as follows:
when the device is used for supplying nutrition to a patient, the patient inhales, the nasal cavity of the patient forms negative pressure, the air pressure at the oxygen interface 6 is larger than the air pressure of the nasal cavity of the patient, and the inhaling one-way valve 3 is opened. At this time, the air pressure in the nasal cavity of the patient is smaller than the air pressure in the air outlet pipeline 8, and the expiration check valve 4 is closed. And finally, only the oxygen interface 6 is communicated with the nasal cavity of the patient, so that the patient can inhale oxygen.
When the patient exhales, the nasal cavity of the patient forms positive pressure, the air pressure at the oxygen interface 6 is smaller than the air pressure of the nasal cavity of the patient, and the inspiration check valve 3 is closed. At this moment, patient's nasal cavity atmospheric pressure is greater than the atmospheric pressure of air outlet pipe way 8, and expiration check valve 4 opens, and finally only end-expiratory carbon dioxide device interface 7 and air outlet pipe way 8 to patient's nasal cavity position UNICOM are favorable to reducing the proportion that remains oxygen and account for in the gas of patient's exhalation for end-expiratory carbon dioxide device is more accurate to the gas measurement of patient's exhalation.
When one nasal cavity is occupied by the examination equipment or one nasal cavity is operated, the nasal catheter 1 with the single nasal cavity can be selected, and the purposes of oxygen inhalation and end-expiratory carbon dioxide detection can be achieved.
In conclusion, the utility model adopts the way that the inspiration check valve is matched with the expiration check valve, and the communication part of the ventilation catheter is continuously changed in the inspiration and expiration processes of the patient, so that the patient can absorb oxygen, excessive oxygen can be prevented from being mixed into the gas exhaled by the patient, the gas exhaled by the patient is purer, and the detection of the expired gas by the end-tidal carbon dioxide device is more accurate.
The air outlet pipeline is favorable for the gas exhausted by the patient to be discharged, and the end-expiratory carbon dioxide device only needs to detect a small part of expired air of the patient to obtain a result, so that most of expired air of the patient is directly exhausted into the atmosphere from the air outlet pipeline, and the patient can not exhale with great strength, thereby reducing the suffocation feeling of the patient.
The utility model has simple structure, can be used for one time, has a characteristic channel for both inspiration and expiration, and can improve the detection accuracy of the end-tidal carbon dioxide device on expired gas, filter most bacteria and reduce the pollution to the end-tidal carbon dioxide sampling tube because the bypass end-tidal carbon dioxide sampling tube is not disposable generally. After the use, the device is discarded, and the next patient cannot be influenced; the bypass type end-tidal carbon dioxide sampling tube can be sterilized and then supplied to the next patient, the condition that the end-tidal carbon dioxide sampling tube is not completely sterilized can occur, and the health of the patient can be protected because the passage from the end-tidal carbon dioxide sampling tube to the nasal catheter is closed when the patient inhales.
The device can realize the accurate detection of oxygen inhalation and end-expiratory carbon dioxide of the single nasal catheter, and is suitable for the condition of entering examination equipment or operation from a single nasal cavity.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. A feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device is characterized in that:
comprises a ventilation catheter, an oxygen interface, an inspiration one-way valve, a nasal catheter, an expiration one-way valve and an end-tidal carbon dioxide device interface which are sequentially connected on the ventilation catheter in series;
wherein the breathing direction of the inspiration one-way valve is consistent with that of the expiration one-way valve;
the oxygen interface is used for connecting an oxygen pipeline so as to supply oxygen to a patient;
the end-tidal carbon dioxide device interface is used for connecting an end-tidal carbon dioxide device so as to measure the end-tidal carbon dioxide value of the patient.
2. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 1, wherein:
the inhalation one-way valve is in an open state when the patient inhales, so that oxygen can enter the nasal cavity of the patient from the oxygen interface.
3. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 1, wherein:
the expiratory check valve is in an open state when the patient exhales, such that carbon dioxide enters the end-tidal carbon dioxide device interface.
4. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 1, wherein:
a filter is connected in series on the ventilation conduit between the end-tidal carbon dioxide device interface and the expiration one-way valve.
5. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 4, wherein:
the filter adopts a water vapor filter with a sterilization function.
6. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 4, wherein:
an air outlet pipeline communicated with the outside air is connected in series on the ventilation catheter between the expiration one-way valve and the filter; alternatively, the first and second electrodes may be,
an air outlet pipeline communicated with the outside air is connected in series on the ventilation conduit between the interface of the end-tidal carbon dioxide device and the filter.
7. The feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device of claim 1, wherein:
and an air outlet pipeline communicated with the outside air is connected in series on the ventilation conduit between the expiration one-way valve and the end-tidal carbon dioxide device interface.
8. A feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device according to any one of claims 1 to 7, wherein:
the nasal catheter is a single-head nasal catheter and is only inserted into a single nasal cavity of a patient.
9. A feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device according to any one of claims 1 to 7, wherein:
the nasal catheter is a double-head nasal catheter and is inserted into two nasal cavities of a patient.
10. A feasible end-tidal carbon dioxide monitoring nasal catheter oxygen inhalation device according to any one of claims 1 to 7, wherein:
the nasal catheter is a nose cover which covers the nose of the patient, so that the nose part of the patient is isolated from the outside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122186138.3U CN215841050U (en) | 2021-09-10 | 2021-09-10 | Nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122186138.3U CN215841050U (en) | 2021-09-10 | 2021-09-10 | Nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide |
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| CN215841050U true CN215841050U (en) | 2022-02-18 |
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| CN202122186138.3U Active CN215841050U (en) | 2021-09-10 | 2021-09-10 | Nasal catheter oxygen inhalation device capable of monitoring end-tidal carbon dioxide |
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