Sample testing card and medical testing device

Abstract

The present application relates to the field of analytical instruments, and in particular to a sample testing card and a medical testing device. The sample testing card provided by the present application comprises a first plate and a heating assembly. The first plate is used for forming a first channel; the first plate is provided with a first electrode; and the first electrode is configured to be used for acquiring electrochemical parameters of a sample in the first channel. The heating assembly is also arranged on the first plate and is used for heating the sample in the first channel. The first plate is a circuit board. The heating assembly can be used to directly heat the sample in the sample testing card, thereby improving the heating efficiency of the sample, and ensuring the testing accuracy.

Description

Sample test cards and medical testing equipment Technical Field

[0001] The present application relates to the field of analytical instruments, and in particular to sample test cards and medical testing equipment. Background Art

[0002] For the sake of hygiene and convenience, commonly used medical testing equipment usually stores samples in sample test cards for testing. Therefore, the samples are away from the human body. Therefore, during the test process, the sample test card needs to be heated or insulated so that the temperature of the sample, reference solution or the entire testing environment inside the test card is maintained within the human body temperature range. This prevents rapid deterioration of the sample in an environment simulating the human body temperature and obtains accurate test results.

[0003] In the prior art, in order to heat the sample test card, a heating module is usually installed near the test card in the medical testing equipment. The heating module is used to heat the sample test card placed inside the equipment. However, during heating, the heating module installed in the medical testing equipment cannot directly heat the sample in the sample test card. Instead, it can only heat the sample by gradually transferring heat from the heating module to the sample test card and then to the sample in the sample test card. Therefore, the heating path is long, the heating speed is slow, and the heat energy loss is also high. In addition, during this heat transfer process, the slow heating speed also leads to longer sample testing time. The in vitro sample and the reference solution that has left the reagent pack are more susceptible to environmental influences and deterioration, resulting in inaccurate test results.

[0004] Summary of the Invention

[0005] The technical problem to be solved by this application is how to provide a sample test card and medical testing equipment to improve the heating efficiency of the sample.

[0006] The present application provides a sample testing card comprising a first plate and a heating assembly. The first plate is used to form a first channel and has a first electrode thereon, the first electrode being configured to obtain electrochemical parameters of a sample in the first channel. The heating assembly is also disposed on the first plate and is used to heat the sample in the first channel. The first plate is a circuit board.

[0007] The present application provides a sample testing card, comprising a first plate and a heating assembly. The first plate is used to form a first channel, and the first plate has a first electrode thereon, and the first electrode is configured to obtain electrochemical parameters of a sample in the first channel; the heating assembly is used to heat the sample in the first channel.

[0008] The present application provides a medical testing device comprising a heating drive circuit and a heating electrode. The heating electrode is connected to an output terminal of the heating drive circuit and is configured to electrically connect to a heating component in a sample test card having any of the aforementioned technical features, so that the heating component can heat a sample in a first channel of the sample test card.

[0009] Different from the existing technology, the present application discloses a sample test card and a medical testing device, which can directly set a heating component in the sample test card to directly heat the sample in the sample test card, thereby improving the efficiency of sample heating and reducing heat loss during the heating process, avoiding the long sample testing time caused by slow heating speed and delaying the detection efficiency; at the same time, improving the heating efficiency can also make the in vitro sample and the reference solution leaving the reagent package less likely to deteriorate, avoid inaccurate test results caused by environmental factors, and improve the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0011] FIG1 is a schematic diagram of the assembly structure of an embodiment of a sample test card of the present application.

[0012] FIG2 is a schematic diagram of the exploded structure of the sample test card in FIG1 .

[0013] FIG3 is a schematic diagram of the substrate structure of the first plate member in FIG1 .

[0014] FIG4 is a schematic diagram of the cross-sectional structure of the first plate in FIG1 .

[0015] FIG5 is a schematic structural diagram of the second board layer in FIG4 .

[0016] FIG6 is a schematic structural diagram of the first board layer in FIG4 .

[0017] FIG7 is a schematic diagram of the structure of the medical detection equipment used in the present application.

[0018] FIG8 is a partial enlarged schematic diagram of area A in FIG7 . DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] The terms "first," "second," and the like in this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "comprising," and "provided with," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] With the advancement of instrumental analysis technology, the process of testing using medical testing equipment, especially blood gas analyzers, involves placing a sample test card inside the blood gas analyzer and then feeding the test sample into the test card for testing. Alternatively, the sample is passed through the sample test card and then placed into the blood gas analyzer for testing. Regardless of the process, the biochemical sample must be removed from the body for testing. Therefore, during the testing process, the test card must be heated or insulated to keep the sample temperature inside the test card close to human body temperature in order to obtain accurate and realistic test results.

[0023] In previous technologies, in order to heat the test card, a heating module is usually installed near the test card inside the blood gas analyzer, or a heating module is installed in the sample injection assembly that inputs the sample to the test card. Therefore, when the test card is placed inside the blood gas analyzer or the sample is inserted into the test card, the heating module is used to heat the test card or the sample passed into the test card. The heating module installed inside the instrument can only heat the shell of the test card, but cannot directly heat the sample inside the test card, resulting in a large amount of heat loss during the transfer process and a slow speed of heat transfer to the sample. When the heating module is installed in the sample injection assembly, the heating module can only heat the sample before the sample is passed into the test card, but cannot continuously heat the sample inside the test card. Moreover, the heated sample will also lose a certain amount of heat during the transportation process, and cannot continuously heat the sample passed into the test card.

[0024] Therefore, how to provide a sample test card and medical testing equipment to improve the efficiency of heating samples is a major problem that the sample test card and medical testing equipment provided in this application want to solve.

[0025] Referring to Figures 1 to 3, Figure 1 is a schematic diagram of the assembly structure of an embodiment of a sample test card of the present application. Figure 2 is a schematic diagram of the exploded structure of the sample test card in Figure 1. Figure 3 is a schematic diagram of the substrate structure of the first plate in Figure 1. The present application provides a sample test card 9, comprising a first plate 4 and a heating component 4c. The first plate 4 is used to form a first channel 1 through which a sample can pass, and the surface of the first plate 4 forming the first channel 1 is also provided with a first electrode 41, which is configured to obtain electrochemical parameters of the sample in the first channel 1. The heating component 4c is also provided on the first plate 4. The heating component 4c is used to heat the sample in the first channel 1 formed by the first plate 4. Among them, the first plate 4 can be a circuit board.

[0026] The sample test card 9 provided in this embodiment directly sets the heating component 4c on the first plate 4 used to form the first channel 1, so that the heating component 4c is used to directly heat the sample in the first channel 1, reducing heat loss during the heat transfer process, shortening the heat transfer path, and making the heating efficiency of the sample higher, thereby speeding up the entire process of testing the sample; at the same time, it will not cause the entire test card or even the instrument that accommodates the test card to be heated, reducing the possibility of unstable operation of other components due to temperature changes, and can improve the stability and accuracy of the sample test card 9 and even the entire testing instrument.

[0027] The sample test card 9 provided herein may further include a second plate 5. The second plate 5 is provided with a first through-hole 51 for forming the first channel 1. The second plate 5 is disposed on a side of the first plate 4 where the first electrode 41 is disposed. To enable the first electrode 41 to detect the sample, the first electrode 41 is exposed to the first channel 1 through the first through-hole 51, thereby contacting the sample after the sample is passed into the first channel 1.

[0028] Optionally, the heating component 4c may be arranged at a position that at least partially overlaps with the projection of the first through-hole 51 on the first plate 4, thereby directly heating the first channel 1 effectively and accurately, thereby improving the efficiency of heating the sample.

[0029] 3 to 6 , FIG4 is a schematic cross-sectional view of the first plate member in FIG1 , FIG5 is a schematic view of the second plate layer in FIG4 , and FIG6 is a schematic view of the first plate layer in FIG4 .

[0030] Since samples generally need to be extracted from a living organism before testing, a large amount of sample is generally not available for testing. To accommodate the sample volume, the first channel 1 used for testing samples is also designed to be small so that even a small amount of sample can fully contact the first electrode 41 for testing. Therefore, the projected area of ​​the first channel 1 on the first plate 4 is not very large.

[0031] Optionally, but considering that the first plate 4 not only needs to arrange the first electrode 41 and other circuit elements related to the detection sample in the area used to form the first channel 1, but also needs to arrange circuit elements related to the heating component 4c for heating the sample, and these two circuit elements with different uses may affect each other and delay each other's normal operation, the first plate 4 can be set as a multi-layer circuit board, so that different circuit elements are arranged on different board layers to ensure that these circuit elements can act normally on the sample in the first channel 1.

[0032] At the same time, it can also ensure that the circuit elements in the area on the surface of the first plate 4 used to form the first channel 1 are not too crowded, so that the first plate 4 exposed in the first channel 1 is relatively flat and does not affect the sample detection system.

[0033] Optionally, the first channel 1 may specifically include a first plate layer 4a and a second plate layer 4b stacked together. Circuit components such as the first electrode 41 required for sample testing may be disposed on the side of the first plate layer 4a facing away from the second plate layer 4b, thereby being exposed to the sample in the first channel 1 formed on the other side of the first plate layer 4a. The heating assembly 4c may be disposed on the second plate layer 4b, thereby allowing the heating assembly 4c to occupy a larger area of ​​the projection of the first through-hole 51 onto the first plate 4, thereby utilizing the larger heating assembly 4c to improve sample heating efficiency.

[0034] Optionally, even if they are arranged on different board layers, when the distance is too close, the heating component 4c on the second board layer 4b may also affect the first electrode 41 and other circuit elements on the first board layer 4a. Therefore, a third board layer 4j can also be provided between the first board layer 4a and the second board layer 4b to avoid the heating component 4c from affecting the first electrode 41 and other circuit elements on the first board layer 4a, thereby ensuring the stability and accuracy of sample detection.

[0035] Optionally, the heating component 4c may be a heating wire laid on the first plate 4. Since the first plate body is provided with an infusion hole 4d communicating with the first channel 1, and the first plate layer 4a and / or the second plate layer 4b are also provided with through holes for various other purposes, the heating wire can be evenly coiled on the second plate layer 4b, effectively avoiding positions corresponding to the infusion hole 4d, the through hole, the third electrode 8, and the signal output electrode 8a, without affecting its own layout.

[0036] The infusion port 4d is used to introduce and / or remove samples or other reagents into the first channel 1 and can interface with the sampling assembly of a testing instrument, thereby introducing the sample into the first channel 1 through the sampling assembly. The through holes can include wire holes for circuit boards and fixing holes 4g for securing the first and second plates 4, 5 to the sample test card 9.

[0037] As shown in Figure 5 , area B is the area on the second plate layer 4b where the heating wires are positioned to avoid the third electrode 8 and the signal output electrode 8a. Area C is the area on the second plate layer 4b where the heating wires are positioned to avoid the fixing hole 4g. Area D is the area on the second plate layer 4b where the heating wires are positioned to avoid the infusion hole 4d.

[0038] Optionally, the sample test card 9 further includes a first shell 6 and a second shell 7. A first fixing member on the first shell 6 is inserted into the fixing hole 4g ​​and assembled with a second fixing member on the second shell 7, thereby clamping the first plate 4 and the second plate 5 between the first shell 6 and the second shell 7. The first fixing member cooperates with the second fixing member to relatively fix the first shell 6, the second plate 5, the first plate 4, and the second shell 7, thereby forming a first channel 1 at the position corresponding to the first through-hole 51, thereby preventing problems such as short circuits and instrument damage caused by sample leakage, and improving the stability of the sample test card 9.

[0039] Optionally, the first plate member 4 may further include a fourth plate layer 4h. The fourth plate layer 4h may be disposed on the side of the second plate layer 4b facing away from the first plate layer 4a, thereby preventing the heating effect of the heating assembly 4c from affecting the second housing 7 of the sample test card 9 or even the medical testing device 9a outside the sample test card 9, thereby improving the stability of the entire sample testing system.

[0040] The sample test card 9 provided in this embodiment may further include a third electrode 8 for supplying power to the heating assembly 4c in the sample test card 9. The third electrode 8 is disposed on the surface of the first plate 4 and is electrically connected to the heating assembly 4c. Thus, when the third electrode 8 is connected to the heating electrode 82 of the medical testing device 9a, the heating assembly 4c can utilize the electrical energy of the medical testing device 9a to directly heat the sample in the first channel 1.

[0041] Optionally, a signal output electrode 8a and a temperature measuring component 45 may also be provided on the first plate 4. The number of signal output electrodes 8a is at least two, and they are arranged on the surface of the first plate 4. At least one of the signal output electrodes 8a is connected to the first electrode 41, so as to output the detection signal measured by the first electrode 41 to the medical detection device 9a. The temperature measuring component 45 is used to detect the temperature of the sample in the first channel 1, so as to facilitate temperature control and avoid excessive temperature causing instrument instability or sample deterioration. The temperature measuring component 45 can be arranged on the side of the first plate layer 4a away from the second plate layer 4b, and close to the first channel 1, so as to measure the temperature of the sample in the first channel 1.

[0042] Optionally, the temperature measurement component 45 is connected to another signal output electrode 8a through a lead 47b, so that the measured temperature information of the first channel 1 is output to the medical detection device 9a through the signal output electrode 8a.

[0043] Optionally, the signal output electrode 8 a may be arranged side by side with the third motor 8 .

[0044] Optionally, in order to make the temperature detected by the temperature measuring component 45 more accurate and not affect the flow of the sample in the first channel 1, the temperature measuring component 45 can be set at a position close to the first area on the surface of the side of the first plate layer 4a where the first electrode 41 is provided.

[0045] Optionally, the temperature measuring component 45 may be a thermistor.

[0046] In electrochemical detection methods, there is a very common three-electrode system consisting of a detection electrode, a counter electrode 412, and a reference electrode. In this application, the first electrode 41 is used as the detection electrode of the three-electrode system, and the counter electrode 412 can be arranged in the first channel 1. Therefore, a reference solution and a reference electrode can also be provided in the sample test card 9.

[0047] Optionally, the first plate 4 can also be used to form a second channel 2 containing a reference solution. The sample test card 9 can also include a second electrode 42 disposed in the second channel 2, serving as a reference electrode. The second electrode 42 is used to obtain electrochemical parameters of the reference solution in the second channel 2. To ensure the stability of the detection system and the uniformity of the temperature environment during detection by different electrodes, the heating assembly 4c can also be used to heat the reference solution or other reagents in the second channel 2.

[0048] Optionally, the sample test card 9 including the second channel 2 may further include a second plate 5. The second plate 5 is provided with a second through-hole 52. The second plate 5 is disposed on a side surface of the first plate 4 where the second electrode 42 is disposed. The second electrode 42 may be exposed to the second channel 2 through the second through-hole 52 so that the second electrode 42 can contact the reference solution for detection.

[0049] Optionally, the heating component 4 c may be arranged at a position that at least partially overlaps with the projection of the second through-hole 52 on the first plate 4 , thereby effectively heating the reference solution or other reagents in the second channel 2 .

[0050] Optionally, other electrodes or components, such as the second electrode 42, the first electrode 41, and the counter electrode 412, can also be connected to the signal output electrode 8a via a lead 47b. This allows the detection signals obtained by these electrodes to be output to the medical detection device 9a, or for the medical detection device 9a to supply power or control its operation. For example, the electrochemical parameters of the liquid in the second channel 2 measured by the second electrode 42 can be output as detection signals via the signal output electrode 8a.

[0051] Optionally, the third electrode 8 and the signal output electrode 8a can be arranged on the same side surface or back side surface of the first electrode 41 on the first plate 4, so that the third electrode 8 and the signal output electrode 8a can be connected to the medical detection device 9a.

[0052] Optionally, when the third electrode 8 and the signal output electrode 8a are arranged on the same side surface of the first electrode 41, as shown in Figures 7 and 8, Figure 7 is a structural schematic diagram of the medical detection device used in the present application. Figure 8 is a partially enlarged schematic diagram of area A in Figure 7. In the figure, the third electrode 8 and the signal output electrode 8a are arranged on the same side surface of the first electrode 41 away from the side edge of the first channel 1, and compared to the first channel 1, the third electrode 8 and the signal output electrode 8a are located at the front end of the installation direction of the sample test card 9 into the medical detection device 9a. Therefore, the third electrode 8 and the signal output electrode 8a can be exposed outside the first shell 6 through the contact notch 64 of the first shell 6 of the sample test card 9, so that the third electrode 8 and the signal output electrode 8a can be connected to the medical detection device 9a equipped with the sample test card 9.

[0053] Optionally, in order to facilitate the contact electrode 81 and the heating electrode 82 of the medical detection equipment 9a to enter the contact gap 64 and connect with the third electrode 8 and the signal output electrode 8a, the second shell 7 may also be provided with an assembly gap 71 corresponding to the contact gap 64, so that the contact electrode 81 and the heating electrode 82 can pass through the assembly gap 71 and connect with the third electrode 8 and the signal output electrode 8a.

[0054] Optionally, when the third electrode 8 and the signal output electrode 8a are arranged on the back surface of the first electrode 41, the assembly notch 71 and the contact notch 64 can be set corresponding to the positions of the third electrode 8 and the signal output electrode 8a, and accordingly, the contact electrode 81 and the heating electrode 82 also need to be set in reverse.

[0055] The present application also provides a sample test card 9, which includes a first plate 4 and a heating assembly 4c. The first plate 4 is used to form a first channel 1, and is provided with a first electrode 41. The first electrode 41 is configured to obtain electrochemical parameters of a sample in the first channel 1. The heating assembly 4c is used to heat the sample in the first channel 1.

[0056] The present application also provides a medical testing device 9a, which can be loaded with a sample test card 9 to test a sample. The medical testing device 9a includes a heating drive circuit (not shown in the figure) and a heating electrode 82.

[0057] The heating drive circuit is located within the medical testing device 9a and is used to control the power output to the heating assembly 4c or the operating state of the heating assembly 4c, thereby controlling the heating effect of the heating assembly 4c on the liquid in the first channel 1. A heating electrode 82 has one end connected to the output of the heating drive circuit and the other end electrically connected to the heating assembly 4c in the sample test card 9, enabling the heating assembly 4c to use the current output by the medical testing device 9a to heat the sample in the first channel 1 of the sample test card 9.

[0058] Alternatively, the heating drive circuit can be manually controlled by a user of the medical detection device 9a to control the heating effect of the heating component 4c, or the heating component 4c can be controlled automatically, such as by PID control (proportional integral differential control).

[0059] Optionally, when the sample test card 9 includes a second channel 2 , the heating drive circuit may also be used to control the heating effect of the heating component 4 c on the liquid in the second channel 2 .

[0060] Alternatively, the medical detection device 9a may further include a processing circuit (not shown) and a contact electrode 81. The processing circuit is used for analyzing and processing the detection signal output by the detection electrode in the sample test card to obtain a test result, and can also be used to control the detection process of the sample. One end of the contact electrode 81 is connected to the processing circuit, and the other end is arranged side by side with the heating electrode 82, thereby contacting the signal output electrode 8a on the sample test card 9 to receive the detection signal and pass it to the processing circuit.

[0061] Optionally, the detection signal may be output by the first electrode 41, the second electrode 42, and / or the temperature measurement component 45. The detection signal output by the first electrode 41 includes the electrochemical parameters of the sample in the first channel 1, the detection signal output by the second electrode 42 includes the electrochemical parameters of the reference solution in the second channel 2, and the detection signal output by the temperature measurement component 45 includes the temperature measured by the temperature measurement component 45.

[0062] Optionally, the cross-sectional area of ​​the heating electrode 82 can be larger than the cross-sectional area of ​​the contact electrode 81. Since the heating component 4c requires a large amount of power to heat the sample, the heating electrode 82 can be configured as a larger electrode with a larger cross-sectional area to allow a larger current to flow into the heating component 4c, thereby improving the efficiency of sample heating and further facilitating the stability of the detection system.

[0063] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sample test card, characterized in that: include: A first plate, used to form a first channel, having a first electrode, wherein the first electrode is configured to obtain an electrochemical parameter of a sample in the first channel; a heating component, disposed on the first plate, for heating the sample in the first channel; Wherein, the first plate component is a circuit board.

2. The sample test card according to claim 1, characterized in that: include: A second plate having a first through hole, the second plate being disposed on a side of the first plate having the first electrode disposed thereon, the first electrode being exposed to the first channel through the first through hole; The location of the heating component at least partially overlaps with the projection of the first through-hole on the first plate.

3. The sample test card according to claim 2, characterized in that: The first plate member includes a first plate layer and a second plate layer which are stacked, the first electrode is arranged on a side of the first plate layer which is away from the second plate layer, and the heating component is arranged on the second plate layer.

4. The sample test card according to claim 3, characterized in that: include: The first plate member further includes a third plate layer disposed between the first plate layer and the second plate layer. The third plate layer is used to isolate the first plate layer where the first electrode is located from the second plate layer where the heating assembly is located.

5. The sample test card according to claim 3, characterized in that: include: The third electrode is arranged on the surface of the first plate and is electrically connected to the heating component, so that when the third electrode is connected to the heating electrode of the medical detection equipment, the heating component can use the electrical energy of the medical detection equipment to heat the first channel.

6. The sample test card according to claim 5, characterized in that: include: at least two signal output electrodes are disposed on the surface of the first plate, wherein at least one of the signal output electrodes is connected to the first electrode and is used to output a detection signal detected by the first electrode to the medical detection device; A temperature measuring component is arranged on a side of the first plate layer away from the second plate layer and close to the first channel; Wherein, the temperature measurement component is connected to at least another one of the signal output electrodes, so that the measured temperature information of the first channel is output to the medical detection equipment through the signal output electrode.

7. The sample test card according to claim 3, characterized in that: The heating component is a heating wire, the first plate body is provided with an infusion hole connected with the first channel, and the first plate layer and / or the second plate layer are also provided with a through hole; The heating wire is evenly coiled on the second plate layer and avoids positions corresponding to the infusion hole, the through hole and the third electrode.

8. The sample test card according to claim 7, characterized in that: The through hole includes a wire hole and a fixing hole, and the sample test card also includes a first shell and a second shell. The first fixing piece on the first shell is inserted into the fixing hole and assembled with the second fixing piece on the second shell. The first plate and the second plate are clamped between the first shell and the second shell to form the first channel corresponding to the first through hole.

9. The sample test card according to claim 1, characterized in that: The first plate is also used to form a second channel. The sample test card also includes a second electrode arranged in the second channel. The second electrode is used to obtain the electrochemical parameters of the reference solution in the second channel. The heating component is also used to heat the liquid in the second channel.

10. The sample test card according to claim 9, characterized in that: include: A second plate having a second through hole, the second plate being disposed on a side of the first plate having the first electrode disposed thereon, the second electrode being exposed to the second channel through the second through hole; Wherein, the location where the heating component is arranged at least partially overlaps with the projection of the second through-hole on the first plate.

11. A sample test card, characterized in that: include: A first plate, used to form a first channel, having a first electrode, wherein the first electrode is configured to obtain an electrochemical parameter of a sample in the first channel; A heating component is used to heat the sample in the first channel.

12. A medical testing device, characterized in that: include: Heating drive circuit; A heating electrode is connected to the output end of the heating drive circuit and is used to be electrically connected to the heating component in the sample test card according to any one of claims 1 to 11, so that the heating component heats the sample in the first channel of the sample test card.

13. The medical testing device according to claim 12, characterized in that: include: Processing circuit; A contact electrode is connected to the processing circuit and arranged side by side with the heating electrode, and is used to contact the third electrode on the sample test card to receive the detection signal and transmit it to the processing circuit.

14. The medical testing device according to claim 12, characterized in that: A cross-sectional area of ​​the heating electrode is larger than a cross-sectional area of ​​the contact electrode.

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