Human body breathing gas detection device

Abstract

The utility model discloses a human body breathing gas detection device which comprises a differential pressure generator, the middle of the differential pressure generator is detachably connected with a differential pressure detection unit, a pressure tapping pipe matched with a pressure tapping connector is arranged in the differential pressure detection unit, and at least two differential pressure sensors with different measuring ranges are arranged on the pressure tapping pipe. A processor, a temperature and humidity sensor, an atmospheric pressure sensor and a wireless transmission module are further arranged in the differential pressure detection unit, and the temperature and humidity sensor, the atmospheric pressure sensor, the wireless transmission module and the differential pressure sensor are all electrically connected with the processor. According to the application, improvement is carried out on the basis of the original application, a related structure of the environment supplementing unit is added, and the differential pressure sensor with multiple measuring ranges is arranged, so that the finally measured data result of the human body breathing gas flow / flow velocity is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of human respiratory gas flow rate / flow velocity detection, in particular to a human respiratory gas detection device. Background Art

[0002] In lung function testing, exercise cardiopulmonary testing or respiratory monitoring, the flow rate or flow of human respiratory gas needs to be collected to determine the lung function status of the human body. Traditional flow measurement has problems such as poor accuracy, large size, heavy weight, high price, and inconvenient cleaning and disinfection.

[0003] To solve the above problems, our company applied for a patent with the authorization announcement number "CN208988881U" in 2018. The patent disclosed "a differential pressure generator for lung function evaluation" and disclosed in the specification that the differential pressure generator can detect the flow rate / flow rate of human respiratory gas in conjunction with the differential pressure detection unit. However, the application still has the following problems: no effective real-time compensation for the impact of changes in ambient temperature, humidity and air pressure; only one differential pressure sensor is set on the sampling tube, and different flow gases cannot be accurately measured separately. Therefore, the accuracy of the final measurement result is not improved, and our company intends to make improvements on this basis. Utility Model Content

[0004] In view of the above technical problems in the related art, the utility model provides a human respiratory gas detection device, which can solve the above problems.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0006] A human respiratory gas detection device comprises a pressure difference generator, wherein the pressure difference generator comprises a sampling tube, wherein a shunt column is arranged between the inlet end and the outlet end of the sampling tube, wherein a plurality of gaps for airflow to pass through are arranged between the shunt column and the inner wall of the sampling tube, wherein two mutually isolated collection chambers are arranged in the shunt column, and pressure taking interfaces are provided on both the collection chambers, wherein one of the collection chambers is connected to the inlet end through the collection port provided thereon, and the other collection chamber is connected to the outlet end through the collection port provided thereon, and a pressure difference detection unit is detachably connected to the middle part of the pressure difference generator, wherein a pressure taking tube matching the pressure taking interface is arranged in the pressure difference detection unit, and at least two pressure difference sensors with different measuring ranges are arranged on the pressure taking tube, and wherein the pressure difference detection unit is also provided with a processor, a temperature and humidity sensor, an atmospheric pressure sensor, and a wireless transmission module, wherein the temperature and humidity sensor, the atmospheric pressure sensor, the wireless transmission module, and the pressure difference sensor are all electrically connected to the processor.

[0007] Furthermore, two differential pressure sensors are provided on the pressure taking pipe, and the two differential pressure sensors include a low-range differential pressure sensor and a high-range differential pressure sensor.

[0008] Furthermore, the differential pressure detection unit is provided with a signal line connector and a gas sampling interface, the differential pressure detection unit is connected to the measurement terminal via a signal line connector or a wireless transmission module, the pressure sampling tube is connected to a gas composition sampling tube, and a gas sampling interface for connecting to a gas composition sensor is provided at the end of the gas composition sampling tube, and the gas composition sensor includes an oxygen sensor and a carbon dioxide sensor.

[0009] Furthermore, a filter screen is provided in the sampling tube at a position close to the inlet end.

[0010] Furthermore, a clamping block and a guide block are provided on the middle outer wall of the sampling tube, a clamping claw cooperating with the clamping block is provided on the pressure difference detection unit, and a guide groove cooperating with the guide block is provided on the clamping claw.

[0011] Beneficial effects of the utility model: This application is improved on the basis of the original application, adding the relevant structure of the environmental supplement unit and setting a pressure difference sensor with multiple ranges, which can make the final measured data results of the human respiratory gas flow / flow rate more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] The utility model is further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of a human respiratory gas detection device according to an embodiment of the utility model;

[0015] Figure 2 It is a structural principle diagram of a human respiratory gas detection device described in an embodiment of the utility model.

[0016] In the figure:

[0017] 1. Differential pressure generator; 2. Differential pressure detection unit; 3. Signal line connector; 4. Gas sampling interface. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0019] like Figure 1-2 As shown, according to the utility model, a human respiratory gas detection device is disclosed, including a differential pressure generator 1, the differential pressure generator 1 includes a sampling tube, a shunt column is arranged between the inlet end and the outlet end of the sampling tube, a plurality of gaps for airflow to pass through are arranged between the shunt column and the inner wall of the sampling tube, two mutually isolated collection chambers are arranged in the shunt column, and pressure taking interfaces are provided on the two collection chambers, one of the collection chambers is connected to the inlet end through the collection port provided thereon, and the other collection chamber is connected to the outlet end through the collection port provided thereon, a differential pressure detection unit 2 is detachably connected to the middle part of the differential pressure generator 1, a pressure taking tube matching the pressure taking interface is arranged in the differential pressure detection unit 2, at least two differential pressure sensors with different ranges are arranged on the pressure taking tube, the differential pressure detection unit 2 is also provided with a processor, a temperature and humidity sensor, an atmospheric pressure sensor, and a wireless transmission module, and the temperature and humidity sensor, the atmospheric pressure sensor, the wireless transmission module, and the differential pressure sensor are all electrically connected to the processor.

[0020] Embodiment 1:

[0021] Two differential pressure sensors are provided on the pressure taking pipe, and the two differential pressure sensors include a low-range differential pressure sensor and a high-range differential pressure sensor, wherein the low-range differential pressure sensor can improve data stability and ensure low flow measurement accuracy, and the high-range differential pressure sensor can improve the flow range and ensure high flow measurement accuracy, and more sensors can be provided to perform segmented measurement of the range, with higher accuracy. The pressure difference at the two diversion points during breathing is opposite in positive and negative, for example, the pressure difference is positive during inhalation and negative during exhalation, and the respiratory frequency is calculated by judging the positive and negative changes of the pressure difference.

[0022] Embodiment 2:

[0023] A temperature and humidity sensor and an atmospheric pressure sensor are arranged in the pressure difference detection unit 2, wherein the measuring parts of the temperature and humidity sensor and the atmospheric pressure sensor are connected to the external environment, and can measure the temperature and humidity in the environment and the current atmospheric pressure, and transmit the measurement signal to the processor, which performs environmental parameter compensation and standardization on the calculated flow rate and flow. Compensation of environmental parameters: the temperature and humidity curve of the pressure difference sensor can be digitized, and the measured value of the pressure difference sensor can be compensated according to the real-time temperature and humidity; standardization: such as conversion into a numerical value under the BPTS state. The results of the respiratory flow rate / flow measured under different environmental parameters for the same patient can be standardized and compared.

[0024] Embodiment three:

[0025] A clamping block and a guide block are arranged on the middle outer wall of the sampling tube, a clamping claw cooperating with the clamping block is arranged on the pressure difference detection unit 2, and a guide groove cooperating with the guide block is arranged on the clamping claw. Therefore, the pressure difference generator 1 of the present application is easy to disassemble, and the pressure difference generator 1 is convenient for single use or disassembly for disinfection and reuse.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A human respiratory gas detection device, comprising a pressure difference generator (1), the pressure difference generator (1) comprising a sampling tube, a flow dividing column is arranged between the inlet end and the outlet end of the sampling tube, a plurality of gaps for air flow to pass through are arranged between the flow dividing column and the inner wall of the sampling tube, two mutually isolated collection chambers are arranged in the flow dividing column, and pressure sampling interfaces are provided on both of the two collection chambers, one of the collection chambers is connected to the inlet end through the collection port provided thereon, and the other collection chamber is connected to the outlet end through the collection port provided thereon, a pressure difference detection unit (2) is detachably connected to the middle part of the pressure difference generator (1), and a pressure sampling tube matching the pressure sampling interface is provided in the pressure difference detection unit (2), characterized in that: At least two differential pressure sensors with different measuring ranges are arranged on the pressure sampling pipe. The differential pressure detection unit (2) is also provided with a processor, a temperature and humidity sensor, an atmospheric pressure sensor, and a wireless transmission module. The temperature and humidity sensor, the atmospheric pressure sensor, the wireless transmission module, and the differential pressure sensor are all electrically connected to the processor.

2. A human respiratory gas detection device according to claim 1, characterized in that: The pressure taking pipe is provided with two differential pressure sensors, and the two differential pressure sensors include a low-range differential pressure sensor and a high-range differential pressure sensor.

3. A human respiratory gas detection device according to claim 1, characterized in that: The differential pressure detection unit (2) is provided with a signal line connector (3) and a gas sampling interface (4); the differential pressure detection unit (2) is connected to a measurement terminal via the signal line connector (3) or a wireless transmission module; the pressure sampling tube is connected to a gas component sampling tube; a gas sampling interface (4) for connecting to a gas component sensor is provided at the end of the gas component sampling tube; the gas component sensor comprises an oxygen sensor and a carbon dioxide sensor.

4. A human respiratory gas detection device according to claim 1, characterized in that: A filter screen is arranged in the sampling tube at a position close to the inlet end.

5. A human respiratory gas detection device according to claim 1, characterized in that: A clamping block and a guide block are provided on the middle outer wall of the sampling tube, a clamping claw cooperating with the clamping block is provided on the pressure difference detection unit (2), and a guide groove cooperating with the guide block is provided on the clamping claw.

Images