CN219289457U - Detection device and nutrition evaluation metabolizing instrument - Google Patents

Abstract

The utility model provides a detection device and a nutrition evaluation metabolizing instrument, which comprise a gas collection piece, a dehumidifying mechanism, an air extraction piece and a first detection piece. The gas collecting piece is used for collecting gas inhaled by a human body and gas exhaled by the human body; the dehumidifying mechanism is communicated with the gas collecting part and is used for adjusting the humidity of the gas; the air extracting piece is communicated with the dehumidifying mechanism; the first detection piece is arranged between the dehumidifying mechanism and the air extracting piece and is used for detecting the carbon dioxide content and the oxygen content in the gas. According to the air extraction device, the power of the air extraction part is regulated, the pressure of the breathing gas passing through the first detection part is kept in the preset pressure range, the flow of the breathing gas passing through the first detection part is kept in the preset flow range, the humidity of the breathing gas passing through the first detection part is kept in the preset humidity range through the dehumidifying mechanism, and then the first detection part can accurately and reliably detect, so that the accuracy and the reliability of detection of the detection device are improved.

Description

Detection device and nutrition evaluation metabolizing instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a detection device and a nutrition evaluation metabolizing instrument.

Background

Numerous clinical evidence has been in progress for decades to indicate that there is a general malnutrition among hospitalized patients; such malnutrition (particularly low protein malnutrition) not only increases mortality in hospitalized patients, but also significantly increases the average hospitalization time and medical costs; while early proper nutritional support therapy can significantly reduce hospital stays and medical costs.

The nutrition evaluation metabolizing instrument measures the consumption of energy, the production of dioxygen and the consumption of oxygen by using a metabolism monitoring system, so as to calculate the composition of three nutrients in energy consumption and obtain the metabolism condition and balance condition of the three nutrients in human body, and a doctor provides scientific, effective and properly proportioned nutrition support for a patient by using the accurate data. Wherein, the core parts of the nutrition evaluation metabolizing instrument comprise oxygen and carbon dioxide sensors. While "oxygen and carbon dioxide sensors" need to work more accurately under certain conditions (i.e., the moisture humidity of the gas being sensed needs to be within a certain range, and the pressure and flow of the gas being sensed is within a certain range). However, the humidity of vapor of the gas exhaled from the human body and the gas inhaled from the human body is high, so that the detection results of the oxygen and carbon dioxide sensors are inaccurate.

Disclosure of Invention

Based on the above, it is necessary to provide a detection device and a nutrition evaluation metabolizing instrument for the problem that the detection results of oxygen and carbon dioxide sensors are inaccurate due to the large humidity of the vapor of the gas exhaled from the human body and the vapor of the gas inhaled from the human body.

The technical scheme is as follows:

in one aspect, there is provided a detection apparatus comprising:

the gas collection piece is used for collecting gas inhaled by a human body and gas exhaled by the human body;

the dehumidifying mechanism is communicated with the gas collecting piece and is used for adjusting the humidity of the gas;

the air extracting piece is communicated with the dehumidifying mechanism; a kind of electronic device with high-pressure air-conditioning system

The first detection piece is arranged between the dehumidifying mechanism and the air extracting piece and is used for detecting the carbon dioxide content and the oxygen content in the gas.

The technical scheme is further described as follows:

in one embodiment, the detection device further comprises a polymer dehumidifying pipe, and two ends of the polymer dehumidifying pipe are respectively communicated with the gas collecting part and the dehumidifying mechanism correspondingly.

In one embodiment, the gas collecting member is provided as a breathing mask provided with breathing passages for inhalation and exhalation of a human body, and the polymer dehumidifying tube is correspondingly communicated with the breathing passages.

In one embodiment, the detection device further comprises a first body fluid collecting member in corresponding communication with the respiratory mask and configured to collect body fluid within the respiratory tract.

In one embodiment, the detecting device further includes a humidity detecting member disposed between the dehumidifying mechanism and the air extracting member, and the humidity detecting member is configured to detect humidity in the gas.

In one embodiment, the detection device further comprises a controller, and the controller is in communication connection with the dehumidifying mechanism, the air extracting member and the humidity detection member.

In one embodiment, the dehumidifying mechanism comprises a heating pipe and a cooling pipe, one end of the heating pipe is communicated with the gas collecting part, the other end of the heating pipe is communicated with one end of the cooling pipe, the other end of the cooling pipe is connected with the air extracting part, and the first detecting part is arranged between the cooling pipe and the air extracting part.

In one embodiment, the detection device further comprises a second body fluid collecting member, which is correspondingly communicated with the heating tube and is used for collecting body fluid in the heating tube;

and/or the detection device further comprises a third body fluid collecting piece which is correspondingly communicated with the cooling pipe and is used for collecting body fluid in the cooling pipe.

In one embodiment, the detecting device further includes a second detecting member, the second detecting member is disposed between the dehumidifying mechanism and the air extracting member, and the second detecting member is used for detecting the pressure and the flow rate of the gas.

In another aspect, a nutrition evaluation metabolizing apparatus is provided, comprising the detecting device.

When the detection device and the nutrition evaluation metabolizing instrument in the above embodiments are used, the gas collection member is worn at the nose of the detected person correspondingly, so that the gas collection member can collect the gas inhaled by the human body and the gas exhaled by the human body (hereinafter referred to as respiratory gas), and the carbon dioxide content and the oxygen content in the respiratory gas can be detected later. Secondly, the work of the air extraction piece is carried out, so that the breathing gas in the gas collection piece can sequentially pass through the dehumidifying mechanism and the first detection piece and is discharged from the air outlet of the air extraction piece, and the first detection piece can detect the carbon dioxide content and the oxygen content in the breathing gas. Then, the power of the air pumping piece is regulated, so that the pressure of the breathing gas passing through the first detection piece is within a preset pressure range, and the flow of the breathing gas passing through the first detection piece is within a preset flow range. Then, the dehumidifying mechanism works, so that the dehumidifying mechanism can adjust the humidity in the breathing gas, and the humidity of the breathing gas passing through the first detection piece is ensured to be within a preset humidity range. And finally, the first detection part correspondingly detects to accurately obtain the carbon dioxide content and the oxygen content in the respiratory gas of the detected person. According to the device, the power of the air extraction part is regulated, the pressure of the breathing gas passing through the first detection part is kept in the preset pressure range, the flow of the breathing gas passing through the first detection part is kept in the preset flow range, the humidity of the breathing gas passing through the first detection part is kept in the preset humidity range through the dehumidifying mechanism, and then the first detection part can accurately and reliably detect, so that the accuracy and the reliability of the detection device detection and nutrition evaluation metabolizing instrument are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and 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.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a detection device according to an embodiment.

Reference numerals illustrate:

10. a detection device; 100. a gas collection member; 200. a dehumidifying mechanism; 210. heating pipes; 220. a cooling tube; 300. an air extracting member; 400. a first detecting member; 500. a polymer dehumidifying tube; 600. a first liquid collecting member; 700. a humidity detecting member; 800. a second body fluid collecting member; 900. a third body fluid acquisition member; 1000. and a second detecting member.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

As shown in fig. 1, in one embodiment, a detection apparatus 10 is provided that includes a gas collection member 100, a dehumidifying mechanism 200, a gas extraction member 300, and a first detection member 400. The gas collection member 100 is used for collecting gas inhaled by a human body and gas exhaled by the human body; the dehumidifying mechanism 200 is communicated with the gas collecting part 100, and the dehumidifying mechanism 200 is used for adjusting the humidity of the gas; the air extracting member 300 is communicated with the dehumidifying mechanism 200; the first detecting member 400 is disposed between the dehumidifying mechanism 200 and the air extracting member 300, and the first detecting member 400 is used for detecting the carbon dioxide content and the oxygen content in the gas.

When the detection device 10 in the above embodiment is used, the gas collecting member 100 is worn at the nose of the person to be detected, so that the gas collecting member 100 can collect the gas inhaled by the person and the gas exhaled by the person (hereinafter referred to as respiratory gas), so as to detect the carbon dioxide content and the oxygen content in the respiratory gas. Next, the air extracting member 300 operates so that the respiratory gas in the gas collecting member 100 can sequentially pass through the dehumidifying mechanism 200 and the first detecting member 400 and be discharged from the air outlet of the air extracting member 300, thereby enabling the first detecting member 400 to detect the carbon dioxide content and the oxygen content in the respiratory gas. Then, the power of the air pumping member 300 is adjusted such that the pressure of the breathing gas passing through the first sensing member 400 is within a preset pressure range and the flow rate of the breathing gas passing through the first sensing member 400 is within a preset flow rate range. Next, the dehumidifying mechanism 200 operates such that the dehumidifying mechanism 200 can adjust the humidity in the breathing gas, ensuring that the humidity of the breathing gas passing through the first detecting member 400 is within a preset humidity range. Finally, the first detecting member 400 detects correspondingly to accurately obtain the carbon dioxide content and the oxygen content in the respiratory gas of the detected person. The power of this application through adjusting bleed 300 for the pressure of breathing gas through first detection spare 400 keeps at preset pressure range, and the flow of breathing gas through first detection spare 400 keeps at preset flow range, through dehumidification mechanism 200, makes the humidity of breathing gas through first detection spare 400 keep at preset humidity range, and then makes first detection spare 400 can accurate, reliable detect, has improved detection device 10 detection's accuracy and reliability.

The dehumidifying mechanism 200 may be a dehumidifier, a drying oven, or other dehumidifying structure. The air extractor 300 may be an air pump, an air cylinder, or other driving structure. The first sensing member 400 includes a carbon dioxide sensor and an oxygen sensor.

The values of the preset pressure range, the preset flow range and the preset humidity range can be flexibly adjusted according to the actual use requirements. Specifically, in the present embodiment, the preset pressure ranges from 700hPa to 1060hPa; the preset flow range is 0L/s to 18L/s; the preset humidity range is 20% RH to 80% RH; the temperature of the breathing gas ranges from-20 ℃ to 55 ℃.

In particular, in the present embodiment, when the power of the air pumping member 300 is changed, the amount of the breathing gas pumped by the air pumping member 300 is also changed, and the amount of the breathing gas pumped is proportional to the pressure, the flow rate and the humidity passing through the first detecting member 400, so that the pressure, the flow rate and the humidity passing through the first detecting member 400 are adjustable.

As shown in fig. 1, the detecting device 10 further includes a polymer dehumidifying pipe 500, and two ends of the polymer dehumidifying pipe 500 are respectively communicated with the gas collecting part 100 and the dehumidifying mechanism 200. In this way, the polymer dehumidifying pipe 500 can selectively transfer part of the water vapor in the respiratory gas, and the constituent substances in the respiratory gas remain unchanged, thereby improving the reliability and the detection accuracy of the detection device 10.

The working principle of the polymer dehumidifying pipe 500 is as follows: the polymer in the polymer dehumidifying tube 500 transfers water molecules from one side of the membrane to the other side through a primary kinetic reaction. This is in contrast to porous membranes, which depend on the physical size of the molecule. The selectivity of the polymeric dehumidifying tube 500 is based on chemical reactivity rather than molecular size, and thus it is not a permeation principle in a conventional sense. The polymeric dehumidifying tube 500 can selectively transfer water vapor while the majority of the analytes in the gas stream remain unchanged. The driving force for the polymeric dehumidifying tube 500 to transfer water molecules is the difference in humidity levels across its membrane. The polymeric dehumidifying tube 500 tries to reach a partial pressure balance of water vapor on either side of its membrane.

Alternatively, the gas collection member 100 is provided as a breathing mask provided with breathing passages for inhalation and exhalation of a human body, and the polymer dehumidifying tube 500 is correspondingly communicated with the breathing passages. Therefore, the breathing mask can be better attached to the face of a detected person, and the comfort level of the detected person is improved while the breathing gas is collected.

As shown in fig. 1, the detection device 10 optionally further includes a first body fluid collecting member 600, where the first body fluid collecting member 600 is in corresponding communication with the breathing mask and is configured to collect body fluid in the breathing passageways. In this way, the first body fluid collecting member 600 can collect body fluid in the breathing mask, so that the body fluid is prevented from polluting the external environment, and the sanitary degree of the detecting device 10 is improved.

Wherein the first body fluid collecting member 600 may be a fluid collector, a body fluid collecting bottle, a body fluid collecting tank or other body fluid collecting structure.

As shown in fig. 1, in one embodiment, the detecting device 10 further includes a humidity detecting member 700, where the humidity detecting member 700 is disposed between the dehumidifying mechanism 200 and the air extracting member 300, and the humidity detecting member 700 is used for detecting the humidity in the gas. In this way, medical staff can correspondingly adjust the air extracting member 300 and the dehumidifying mechanism 200 according to the detection result of the humidity detecting member 700, so that the humidity of the breathing gas passing through the first detecting member 400 can be quickly and stably kept in the preset humidity range, and the convenience and the detection efficiency of the detecting device 10 are improved.

The humidity detecting member 700 may be a humidity sensor, a humidity detector, or other humidity detecting structure.

Optionally, the detection device 10 further includes a controller in communication with the dehumidification mechanism 200, the air extraction member 300, and the humidity detection member 700. In this way, the controller can automatically adjust the power of the dehumidifying mechanism 200 and the power of the air extractor 300 according to the detection result of the humidity detection member 700, thereby improving the degree of intellectualization of the detection device 10.

The controller can be a singlechip, an editable logic controller or other control structures. The controller is communicatively connected to the dehumidifying mechanism 200, the air extractor 300 and the humidity sensor 700 via data lines, wires, bluetooth, wireless communication network technology or other communication means. In other embodiments, the controller may also be communicatively coupled to the first sensing element 400 and the gas collection element 100. Thus, the degree of intellectualization of the detection device 10 is further improved.

In particular, in the present embodiment, when the controller adjusts the power of the air pumping member 300 so that the pressure of the breathing gas passing through the first detecting member 400 is within the preset pressure range and the flow rate of the breathing gas passing through the first detecting member 400 is within the preset flow rate range, the dehumidifying mechanism 200 does not operate; when the pressure of the breathing gas passing through the first detecting member 400 is within the preset pressure range and the flow of the breathing gas passing through the first detecting member 400 is within the preset flow range, the controller judges whether the dehumidifying mechanism 200 needs to be started and adjusts the power according to the detection result of the humidity detecting member 700 at the moment, that is, if the detection result of the humidity detecting member 700 is within the preset humidity range, the dehumidifying mechanism 200 does not work; if the detection result of the humidity detection member is not within the preset humidity range, the dehumidifying mechanism 200 works and correspondingly adjusts the power. In this way, the energy consumption of the detection device 10 is reduced.

As shown in fig. 1, in one embodiment, the dehumidifying mechanism 200 includes a heating pipe 210 and a cooling pipe 220, one end of the heating pipe 210 is communicated with the gas collecting part 100, the other end of the heating pipe 210 is communicated with one end of the cooling pipe 220, the other end of the cooling pipe 220 is connected with the air extracting part 300, and the first detecting part 400 is disposed between the cooling pipe 220 and the air extracting part 300. In this way, the heating pipe 210 can heat the breathing gas, so that the breathing gas reaches a state saturated by moisture, and then the breathing gas saturated by moisture contacts with the cooling pipe 220 to reduce the temperature of the breathing gas below the dew point, so that the vapor contained in the breathing gas is partially condensed, the humidity of the breathing gas is adjusted, and the reliability and applicability of the detection device 10 are improved.

As shown in fig. 1, further, the detecting device 10 further includes a second body fluid collecting member 800, and the second body fluid collecting member 800 is correspondingly communicated with the heating tube 210 and is used for collecting body fluid in the heating tube 210. In this way, the second collecting member can collect the body fluid in the heating tube 210, so as to prevent the body fluid from being discharged to the external environment, and improve the sanitation degree of the detecting device 10.

The second body fluid collecting member 800 may be a body fluid collector, a body fluid collecting bottle, a body fluid collecting tank or other body fluid collecting structure.

As shown in fig. 1, the testing device 10 optionally further includes a third body fluid collection member 900, the third body fluid collection member 900 being in corresponding communication with the cooling tube 220 and configured to collect body fluid within the cooling tube 220. In this way, the third collecting member can collect the condensed body fluid in the cooling tube 220, and prevent the body fluid from being discharged to the outside environment, thereby improving the sanitary degree of the detecting device 10.

Wherein third body fluid collection member 900 can be a body fluid collector, a body fluid collection bottle, a body fluid collection canister, or other body fluid collection structure.

As shown in fig. 1, in one embodiment, the detecting device 10 further includes a second detecting member 1000, where the second detecting member 1000 is disposed between the dehumidifying mechanism 200 and the air extracting member 300, and the second detecting member 1000 is used for detecting the pressure and the flow rate of the gas. In this way, medical staff can correspondingly adjust the power of the air extracting member 300 according to the detection result of the second detecting member 1000, so that the pressure of the breathing gas passing through the first detecting member 400 can be quickly and accurately within the preset pressure range, and the flow of the breathing gas passing through the first detecting member 400 can be quickly and accurately within the preset flow range, thereby improving the convenience and the detection efficiency of the detecting device 10.

In particular, in the present embodiment, the second detecting member 1000 includes a pressure sensor and a flow sensor.

Further, the second sensing element 1000 is communicatively coupled to a controller. In this way, the controller can automatically adjust the power of the air extracting member 300 according to the detection result of the second detecting member 1000, so as to ensure that the pressure of the breathing gas passing through the first detecting member 400 is within the preset pressure range, and the flow of the breathing gas passing through the first detecting member 400 is within the preset flow range, thereby improving the convenience and the intelligent degree of the detecting device 10.

The mounting sequence of the first detecting member 400, the second detecting member 1000, and the humidity detecting member 700 along the flow direction of the breathing gas can be flexibly adjusted according to the actual use requirement. In particular, in the present embodiment, the humidity sensor, the second detecting member 1000, and the first detecting member 400 are installed in this order along the flow direction of the breathing gas.

In this embodiment, the heating pipe 210, the cooling pipe 220, the humidity sensor 700, the second detecting member 1000, the first detecting member 400 and the air extracting member 300 may be directly connected, or may be connected by a connecting pipe or a connecting piece such as a polymer dehumidifying pipe 500.

In one embodiment, a nutrition assessment metabolizing apparatus is provided comprising the detection device 10 of any of the embodiments described above.

When the nutrition evaluation metabolizing instrument in the above embodiment is used, the gas collecting member 100 is worn at the nose of the detected person, so that the gas collecting member 100 can collect the gas inhaled by the human body and the gas exhaled by the human body (hereinafter referred to as respiratory gas), so as to detect the carbon dioxide content and the oxygen content in the respiratory gas in the following. Next, the air extracting member 300 operates so that the respiratory gas in the gas collecting member 100 can sequentially pass through the dehumidifying mechanism 200 and the first detecting member 400 and be discharged from the air outlet of the air extracting member 300, thereby enabling the first detecting member 400 to detect the carbon dioxide content and the oxygen content in the respiratory gas. Then, the power of the air pumping member 300 is adjusted such that the pressure of the breathing gas passing through the first sensing member 400 is within a preset pressure range and the flow rate of the breathing gas passing through the first sensing member 400 is within a preset flow rate range. Next, the dehumidifying mechanism 200 operates such that the dehumidifying mechanism 200 can adjust the humidity in the breathing gas, ensuring that the humidity of the breathing gas passing through the first detecting member 400 is within a preset humidity range. Finally, the first detecting member 400 detects correspondingly to accurately obtain the carbon dioxide content and the oxygen content in the respiratory gas of the detected person. The power of this application through adjusting bleed 300 for the pressure of breathing gas through first detection spare 400 keeps at preset pressure range, and the flow of breathing gas through first detection spare 400 keeps at preset flow range, through dehumidification mechanism 200, make the humidity of breathing gas through first detection spare 400 keep at preset humidity range, and then make first detection spare 400 can detect accurately, reliably, improved nutrition evaluation metabolic instrument detection's accuracy and reliability.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, 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, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

It will be further understood that when interpreting the connection or positional relationship of elements, although not explicitly described, the connection and positional relationship are to be interpreted as including the range of errors that should be within an acceptable range of deviations from the particular values as determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, and is not limited herein.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A detection apparatus, characterized by comprising:

the gas collection piece is used for collecting gas inhaled by a human body and gas exhaled by the human body;

the dehumidifying mechanism is communicated with the gas collecting piece and is used for adjusting the humidity of the gas;

the air extracting piece is communicated with the dehumidifying mechanism; a kind of electronic device with high-pressure air-conditioning system

The first detection piece is arranged between the dehumidifying mechanism and the air extracting piece and is used for detecting the carbon dioxide content and the oxygen content in the gas.

2. The apparatus according to claim 1, further comprising a polymer dehumidifying pipe, both ends of which are respectively in corresponding communication with the gas collecting element and the dehumidifying mechanism.

3. The detection device according to claim 2, wherein the gas collection member is provided as a breathing mask provided with breathing passages for inhalation and exhalation by a human body, and the polymer dehumidification tube is in corresponding communication with the breathing passages.

4. A test device according to claim 3, further comprising a first body fluid collection member in corresponding communication with the respiratory mask and adapted to collect body fluid within the respiratory tract.

5. The apparatus according to any one of claims 1 to 4, further comprising a humidity detecting member provided between the dehumidifying mechanism and the air extracting member, the humidity detecting member being configured to detect humidity in the gas.

6. The test device of claim 5, further comprising a controller in communication with each of the dehumidifying mechanism, the air extractor and the humidity sensor.

7. The detecting device according to any one of claims 1 to 4, wherein the dehumidifying mechanism includes a heating pipe and a cooling pipe, one end of the heating pipe is communicated with the gas collecting member, the other end of the heating pipe is communicated with one end of the cooling pipe, the other end of the cooling pipe is connected with the air extracting member, and the first detecting member is provided between the cooling pipe and the air extracting member.

8. The device of claim 7, further comprising a second body fluid collection member in corresponding communication with the heating tube and configured to collect body fluid within the heating tube;

and/or the detection device further comprises a third body fluid collecting piece which is correspondingly communicated with the cooling pipe and is used for collecting body fluid in the cooling pipe.

9. The apparatus according to any one of claims 1 to 4, further comprising a second detecting member provided between the dehumidifying mechanism and the air extracting member, the second detecting member being for detecting the pressure and flow rate of the gas.

10. A nutrition assessment metaboliser comprising a detection unit as claimed in any one of claims 1 to 9.

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