Device for detecting percutaneous water loss
By designing a transdermal water loss detection device with a sliding detection head and a through-slot structure, the problems of water vapor removal in non-ventilated equipment and susceptibility to environmental interference in open methods are solved, achieving rapid venting and continuous detection.
Patent Information
- Application Number
- CN202422613217.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing non-ventilated transdermal water loss testing equipment requires the removal of water vapor accumulated in the chamber after each test, which prevents the equipment from being used for continuous measurement, and the testing method in an open environment is easily affected by environmental interference.
A detection device was designed, comprising a housing, a PCB, a detection head, and a sensor. The sliding structure and through-slot design of the detection head enhance convection and rapidly expel water vapor from the chamber. The sensor detects temperature and humidity to calculate the transdermal water loss value.
It enables rapid removal of water vapor from the chamber during idle periods, reducing waiting time and enhancing the continuity of detection and resistance to environmental interference.
Smart Images
Figure CN223504213U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transdermal water loss detection, and more particularly to a device for detecting transdermal water loss. Background Technology
[0002] Transdermal water loss (TEWL) is defined as the amount of water transported through the skin via passive diffusion. TEWL measurement reflects the skin's function as a barrier to water mobility. Currently, the mainstream methods for detecting transdermal water loss include... Figure 1 The shown chamber method and Figure 2 The non-ventilated method is shown. The advantage of the open-chamber method is that it does not obstruct the skin, ensuring that the skin surface microclimate is not affected by accumulated vapor. However, the open measurement environment is also a major limitation of this detection method, as it is easily affected by variables such as ambient airflow. The advantage of the non-ventilated method is that the detection environment is closed, preventing ambient airflow from interfering with the measurement. However, its disadvantages are also relatively obvious: water vapor diffused from the skin surface continuously accumulates in the chamber, causing the humidity inside the chamber to increase over time. This increase is initially slow, but after a certain period, it shows a linear trend. Therefore, after a single measurement, the device needs to be removed to allow the accumulated water vapor to escape; otherwise, the humidity will rise to near saturation. Thus, devices using the non-ventilated method require the removal of accumulated water vapor from the chamber after each skin contact, making continuous measurement impossible. To address this, this paper proposes an improved transdermal water loss detection device based on the non-ventilated method, with a short waiting time. Utility Model Content
[0003] The purpose of this invention is to provide a device for detecting transdermal water loss, so as to solve the above-mentioned technical problems.
[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:
[0005] A device for detecting transdermal water loss includes a housing, a PCB, an extension in the housing, a receiving space in the extension, and at least two protrusions in the receiving space, all of which are located at the ports of the receiving space.
[0006] It also includes a detection head, which has a chamber and a corresponding number of through slots with protrusions. The detection head enters the receiving space, and the protrusions are framed in the through slots, so that the detection head slides along the axis of the extension in the receiving space. The amount by which the through slots extend outward relative to the extension can be adjusted by the detection head sliding along the axis of the receiving space.
[0007] Preferably, it also includes a sensor mounted on the protrusion for detecting the temperature and humidity inside the chamber.
[0008] Preferably, the housing includes a first housing and a second housing integrated with the first housing, the space after the first and second housings are integrated is used to fix the PCB.
[0009] Preferably, the extension includes a first shell extension as a first shell extension structure and a second shell extension as a second shell extension structure, wherein the first shell extension and the second shell extension form the receiving space after the first shell and the second shell are integrated.
[0010] Preferably, the PCB is equipped with a control module, which is used to receive temperature and humidity information collected by the sensor to calculate the transdermal water loss value.
[0011] Preferably, the housing also secures a display screen, alarm module, power module, storage module, data transmission module, and buttons that are connected to the PCB.
[0012] The beneficial effects of this utility model are:
[0013] The device for detecting transdermal water loss proposed in this invention can enhance convection by utilizing the passage formed by the through groove when in idle state, so that water vapor in the chamber can quickly escape outward from the through groove and the chamber opening. In addition, the detection head extends outward relative to the extension, which can accelerate the dissipation of the surface temperature of the detection head and reduce the waiting time during continuous detection. Attached Figure Description
[0014] Figure 1 This is a schematic diagram illustrating the measurement principle of the open-cell method.
[0015] Figure 2 This is a schematic diagram illustrating the measurement principle of the non-ventilated method.
[0016] Figure 3 This is a schematic diagram of a device for detecting transdermal water loss;
[0017] Figure 4 for Figure 3 Exploded view of the outer casing of the device shown;
[0018] Figure 5 for Figure 4 A structural diagram from another perspective;
[0019] Figure 6 for Figure 3 The diagram shows the structure of the device after testing;
[0020] Reference numerals: 1. First shell; 2. Second shell; 3. Extension of the first shell; 4. Detection head; 5. Display screen; 6. Button; 7. Extension of the second shell; 8. Protrusion; 9. Sensor; 10. Through slot. Detailed Implementation
[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0024] Example 1
[0025] This embodiment presents a device for detecting transdermal water loss; please refer to [link to relevant documentation]. Figures 3-6 The device for detecting transdermal water loss includes a housing and a PCB disposed within the housing, and the housing also has an extension.
[0026] In this embodiment, the outer shell includes a first shell 1 and a second shell 2. The fastener structure used to integrate the first shell 1 and the second shell 2 is a fastener (not shown in the figure). Of course, screws can also be used to fix the first shell 1 and the second shell 2 together.
[0027] In this embodiment, the extension includes a first shell extension 3 as an extension structure of the first shell 1 and a second shell extension 7 as an extension structure of the second shell 2. It should be noted that the first shell extension 3 and the second shell extension 7 form a receiving space after the first shell 1 and the second shell 2 are integrated.
[0028] The receiving space formed by the first shell extension 3 and the second shell extension 7 contains three protrusions 8, with two protrusions 8 on the first shell extension 3 and one protrusion 8 on the second shell extension 7. Furthermore, all the protrusions 8 are located at the outer edges of their respective extensions, that is, at the ports of the receiving space formed by the first shell extension 3 and the second shell extension 7. Even further, each protrusion 8 is equipped with a sensor 9; alternatively, the protrusion 8 may also be equipped with structures for illumination, such as LED beads.
[0029] Please see Figures 3-6The extension section contains a detection head 4. Regarding the detection head 4, firstly, it has a shape to accommodate the receiving space; secondly, the detection head 4 has an internal chamber, and its length is greater than the depth of the receiving space. This allows the detection head 4 to extend outwards relative to the receiving space even when it enters its deepest part. Further, the detection head 4 has through slots 10, the number of which matches the number of protrusions 8. When the detection head 4 enters the receiving space, the protrusions 8 are confined within the through slots 10, preventing the detection head 4 from sliding only along the axis of the extension section within the receiving space. Even further, the amount by which the detection head 4 extends outwards relative to the extension section relative to the through slots 10 can be adjusted as it slides along the axis of the receiving space. Figure 3 For example, when the detection head 4 enters the deepest part of the receiving space, the through groove 10 is completely inserted into the receiving space, and its outward extension relative to the extension portion is zero; conversely, with Figure 6 For example, when the detection head 4 extends outward from the receiving space, the through groove 10 extends outward from the receiving space, and its outward extension relative to the extension portion is proportional to the outward movement distance.
[0030] In this embodiment, Figure 3 The device shown for detecting transdermal water loss is in detection mode. Figure 6 When the device for detecting transdermal water loss shown is in an idle state, convection can be enhanced by the passage formed by the through groove 10, allowing water vapor in the chamber to escape quickly from the through groove 10 and the chamber opening. In addition, the detection head 4 extends outward relative to the extension, which can accelerate the dissipation of the surface temperature of the detection head 4 and reduce the waiting time during continuous detection.
[0031] In this embodiment, sensor 9 is used to detect the temperature and humidity inside the chamber. The PCB is also equipped with a control module, which receives the temperature and humidity information collected by sensor 9 to calculate the transdermal water loss value. The transdermal water loss detection device is also equipped with a display screen 5, an alarm module, a power module, a storage module, a data transmission module, and a button 6 connected to the PCB. The power module provides power to the control module; button 6 provides power on / off and start detection functions for the transdermal water loss device; the display screen 5 displays real-time temperature, humidity, and transdermal water loss values; the alarm module uses a buzzer to indicate button presses; the storage module saves temporary operating data and temperature and humidity calibration values; the data transmission module transmits the calculated transdermal water loss value to the PC via a Type-C port, and can also transmit temperature and humidity calibration values to the control module via the PC.
[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A device for detecting transdermal water loss, comprising a housing and a PCB, characterized in that: The outer casing has an extension, the extension has a receiving space, the receiving space has at least two protrusions, and all the protrusions are located at the ports of the receiving space; It also includes a detection head, which has a chamber and a corresponding number of through slots with protrusions. The detection head enters the receiving space, and the protrusions are framed in the through slots, so that the detection head slides along the axis of the extension in the receiving space. The amount by which the through slots extend outward relative to the extension can be adjusted by the detection head sliding along the axis of the receiving space.
2. The device for detecting transdermal water loss according to claim 1, characterized in that: It also includes sensors, which are mounted on the protrusion to detect the temperature and humidity inside the chamber.
3. The device for detecting transdermal water loss according to claim 1, characterized in that: The housing includes a first housing and a second housing integrated with the first housing, and the space after the first and second housings are integrated is used to fix the PCB.
4. The device for detecting transdermal water loss according to claim 3, characterized in that: The extension includes a first shell extension as a first shell extension structure and a second shell extension as a second shell extension structure; the first shell extension and the second shell extension form the receiving space after the first shell and the second shell are integrated.
5. The device for detecting transdermal water loss according to claim 2, characterized in that: The PCB is equipped with a control module, which receives temperature and humidity information collected by the sensor to calculate the transdermal water loss value.
6. The device for detecting transdermal water loss according to claim 5, characterized in that: The components connected to the PCB also include a display screen, alarm module, power supply module, storage module, data transmission module, and buttons.