CN217112457U - Testing device for bioelectrode with retractable probe - Google Patents

Abstract

The utility model relates to a test equipment of bioelectrode with scalable probe, test equipment includes: the device comprises a needle bed, a data acquisition module and a vacuum adsorption device for bearing a bioelectrode; the needle bed is connected with the data acquisition module through a circuit; the needle bed comprises a plurality of groups of probe units, each probe unit comprises a plurality of conductive probes in a column shape, and each probe comprises a probe head part used for contacting with the bioelectrode, a probe middle part provided with an elastic element and a probe tail part used for fixing the probe. The test equipment can reduce the damage to the bioelectrode in the test process when the bioelectrode is tested and measured, improve the test stability and accuracy, and is favorable for meeting the requirement of mass production.

Description

Testing device for bioelectrode with retractable probe

Technical Field

The present invention relates generally to the field of bioelectrode production and manufacturing, and more particularly to a bioelectrode test apparatus having a retractable probe.

Background

In recent years, with the continuous development and cross fusion of biosensing and electronic technologies, the manufacturing process of a bioelectrode (a biosensing electrode or a biosensor) is more and more mature, and the process is continuously advanced to the smaller, thinner and more precise industries. The manufacturing process of the bioelectrode needs to meet the special requirements of the biological performance: the first is to have a sensing element and ensure the stability of the sensing element in the manufacturing process, and the sensing element can be a reaction enzyme with biological activity or various electrodes which react with a target analyte to generate a bioelectricity signal, or the combination of the two, and the current industry still keeps high heat for manufacturing a bioelectrode by utilizing the reaction enzyme with biological activity because the active enzyme technology is mature. Secondly, because some bioelectrode is implanted or semi-implanted in the target body for detecting the analyte, the problem that the biocompatibility and the biocompatibility thereof determine the characteristic of high resistivity needs to be solved.

In screen printing of bioelectrodes, the required materials are largely divided into three categories: a substrate constituting a substrate, a printing ink for printing electrodes, a biologically active substance (enzyme) constituting a biosensing element. An external insulating layer and an electrode lead are printed on the substrate, and three electrodes, namely a Working Electrode (WE), a Reference Electrode (RE) and an Auxiliary Electrode (AE), are also printed on the substrate at the same time, and are connected with corresponding leads to form a classical electrochemical three-electrode system. The printed bioelectrode needs to be subjected to performance testing in the manufacturing process of the bioelectrode, but compared with the traditional circuit electrode or PCB and the like, the stability of ink and a biological sensitive element needs to be ensured in the testing process, and the breakdown damage of high-voltage measurement on the electrode needs to be avoided, so that the bioelectrode cannot be detected by using the existing ICT/FCT and other testing equipment. The current common test method is that a threshold value is output, the instrument is accessed through 2 special wires, the impedance value between the contacts of the electrode leads of the bioelectrode to be tested is manually contacted by using a special joint at the other end of the wire, the measurement value is displayed on a display screen of the instrument, and the measurement value is read and recorded.

The prior art adopts the method for measurement, although the operation is simple and convenient, the using force in the operation process is not uniform, the measured values are different, the damage to the contact surface of the bioelectrode is easy to cause, the damage to printing ink and a biological sensitive element is possible to influence the performance of the bioelectrode, and the test efficiency is not enough to meet the requirement of mass production.

Disclosure of Invention

The present invention has been made in view of the above-mentioned state of the art, and an object of the present invention is to provide a bioelectrode test apparatus having a retractable probe. The test equipment can reduce the damage to the bioelectrode in the test process when the bioelectrode is tested and measured, improve the test stability and accuracy, and is favorable for meeting the requirement of mass production.

According to the utility model relates to a test equipment, optionally, test equipment includes: the device comprises a needle bed, a data acquisition module and a vacuum adsorption device for bearing a bioelectrode; the needle bed is connected with the data acquisition module through a circuit; the needle bed comprises a plurality of groups of probe units, each probe unit comprises a plurality of conductive probes in a column shape, and each probe comprises a probe head part used for contacting the bioelectrode, a probe middle part provided with an elastic element and a probe tail part used for fixing the probe.

Under the condition, the bioelectrode is placed and fixed at a preset position to be tested through the vacuum adsorption device, then the bioelectrode is subjected to contact and measurement test through the needle bed, and then the data acquisition module is used for carrying out data inspection and acquisition, so that the needle bed can reduce the damage to the contact surface of the bioelectrode and the probe in the test process by utilizing the telescopic or buffering characteristic.

According to the utility model relates to a test equipment, optionally, the probe head the probe middle part and the probe afterbody links to each other in proper order, the probe head can with axial ground with probe middle part relative movement and the probe middle part has spacing portion in order to inject the probe head is at the relative movement of predetermineeing within range, the probe middle part with the probe afterbody is connected through at least one among bonding, block, screw thread or the integrated into one piece mode. In this case, the probe head and the probe middle part can be formed to have a telescopic structure, so that when the bioelectrode is tested, the probe with the telescopic structure can reduce the damage caused by the surface when the probe is in contact with the bioelectrode, and the yield of the bioelectrode when shipped from the factory can be improved.

According to the utility model relates to a test equipment, optionally, the probe head include with the probe middle part be connected and be the first end of cylinder and with the second end of bioelectrode contact, the second end is the hemisphere, the diameter of first end is less than the diameter at probe middle part. In this case, the diameter of the first end portion is smaller than that of the middle portion of the probe, so that the first end portion can be coaxially and relatively movably disposed and connected with the middle portion of the probe, and compared with other sharp shapes, the hemispherical second end portion can reduce damage to the surface of the bioelectrode when contacting the surface of the bioelectrode by using the spherical characteristic.

According to the utility model relates to a test equipment, optionally, the probe middle part is the cylinder that has the recess, the recess with the shape phase-match of probe head the recess is provided with elastic element, elastic element is in the recess in-connection the probe head with the probe middle part, elastic element is at least one kind in spring or the shell fragment to have predetermined compression value. Under the condition, the middle part of the probe with the groove can be matched with the head part of the probe to form a telescopic structure, the telescopic structure can reduce the damage to the surface of the bioelectrode when the probe is contacted with the bioelectrode, and the middle part of the probe is connected with the head part of the probe through an elastic element, so that the buffer can be formed when the bioelectrode is tested and measured, the contact surface of the probe and the bioelectrode is stabilized, and the test accuracy is improved.

According to the utility model relates to a test equipment, optionally, the probe unit includes that 2-6 are the electrically conductive probe of cylinder, utilizes when the probe unit measures, the probe unit with bioelectrode one-to-one matches. Under the condition, the multiple probes can obtain data of different areas or structures of the bioelectrode, which need to be tested and measured, when testing and measuring the single bioelectrode, and the multiple probe units matched with the bioelectrode one by one can obtain the data of the test of the multiple bioelectrodes when testing and measuring the bioelectrode, so that the test efficiency is improved, and the requirement of mass production is met.

According to the utility model relates to a test equipment, optionally, the material of probe is one kind or alloy in silver, copper, gold, aluminium, tungsten, nickel, iron and the platinum. In this case, the probe of one or an alloy of silver, copper, gold, aluminum, tungsten, nickel, iron, and platinum can apply and receive an electrical signal to the bioelectrode to thereby perform a test measurement on the bioelectrode, and the more conductive the probe material can improve the accuracy of test data.

According to the utility model relates to a test equipment, optionally, still include drive arrangement, the needle bed the probe afterbody with drive arrangement fixes through at least one of the mode of gomphosis, block, bonding, screw thread or magnetism, the drive arrangement drive the needle bed with bioelectrode contact. Under the condition, the needle bed can be driven to move to the preset position through the driving device and is in contact with the bioelectrode to complete the test, so that manual operation is reduced, and the test and measurement efficiency is improved.

According to the utility model relates to a test equipment, optionally, still include the response module, the response module sets up with pasting mode detachably vacuum adsorption device's preset position surface is used for detecting bioelectrode with the contact state of needle bed. Under the condition, the induction module can judge whether the needle bed is successfully contacted with the bioelectrode when the bioelectrode is tested and measured, so that the test accuracy is improved.

According to the utility model relates to a test equipment, optionally, still include control module, control module includes main control system, display, operation portion and PLC module, main control system is used for handling data and generates control command, the display is used for showing operation interface and test result, operation portion is used for the external operation, the PLC module is used for receiving control command and according to control command control drive arrangement with the vacuum adsorption device. Under the condition, the control module controls the testing equipment to test and measure the bioelectrode, so that misoperation of manual measurement and damage of the bioelectrode caused by the manual measurement can be reduced, the testing accuracy and efficiency are improved, and the requirement of mass production is met.

According to the utility model relates to a test equipment, optionally, control module with drive arrangement passes through circuit connection, drive arrangement has predetermined motion route and motion stroke, control module with data acquisition module passes through circuit connection. Under the condition, the driving device is controlled through the control module and the needle bed is driven to move to the preset position so as to complete the test and measurement of the bioelectrode, and the data acquisition module transmits the test data to the control module, so that the misoperation of manual measurement and the damage of the bioelectrode caused by the manual measurement can be reduced, the test accuracy and efficiency are improved, and the requirement of mass production is further met.

According to the utility model discloses, can provide a bioelectrode test equipment with scalable probe. The test equipment can reduce the damage to the bioelectrode in the test process when the bioelectrode is tested and measured, improve the test stability and accuracy, and is favorable for meeting the requirement of mass production.

Drawings

Fig. 1 is a schematic structural diagram of a testing apparatus according to the present invention;

FIG. 2 is a view showing a scene of the cooperation between the needle bed and the vacuum adsorption device of the testing apparatus according to the present invention;

FIG. 3 is a schematic structural view of a needle bed according to the present invention;

fig. 4 is an enlarged view of the probe unit according to the present invention;

fig. 5 is a schematic structural view of a retractable probe according to the present invention;

fig. 6 is a cross-sectional view of a retractable probe in accordance with the present invention;

fig. 7 is a schematic view of a probe head embodiment 1 of a retractable probe according to the present invention;

fig. 8 is a schematic view of a probe head embodiment 2 of a retractable probe according to the present invention;

fig. 9 is a schematic view of a probe head embodiment 3 of a retractable probe according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "first", "second", "third" and "fourth" etc. in the description and claims of the present invention and the above-mentioned drawings are used for distinguishing different objects, and are not used for describing a specific order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.

The utility model provides a bioelectrode test equipment with scalable probe. The testing equipment can reduce the damage to the bioelectrode in the testing process when the bioelectrode is tested and measured, and the testing process is stable, so that the testing accuracy can be improved, and the requirement of mass production can be met. The following detailed description is made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram showing a test apparatus 1 according to the present invention.

As shown in fig. 1, in some examples, the test device 1 may include: a needle bed 10, a data acquisition module (not shown), and a vacuum adsorption device 11 for carrying bioelectrodes. In this case, the bioelectrode is placed and fixed at a predetermined position to be tested by the vacuum adsorption device 11, and then the bioelectrode is subjected to contact and measurement test by the needle bed 10, and further data inspection and collection by the data collection module, whereby the apparatus can test the bioelectrode by each module.

As shown in fig. 1, in some examples, the testing apparatus 1 may further include a driving device 12, the probe tail 303 of the needle bed 10 may be fixed to the driving device 12 by at least one of fitting, snapping, adhering, screwing or magnetic attraction, and the driving device 12 drives the needle bed 10 to contact with the bioelectrode. In this case, the needle bed 10 can be driven to move to a preset position by the driving device 12 and contact with the bioelectrode to complete the test, so that manual operation is reduced, and test and measurement efficiency is improved.

In some examples, the testing apparatus 1 may further include a sensing module (not shown in the figures), which may be detachably disposed on a predetermined position surface of the vacuum adsorption device 11 in an adhesive manner and may be used to detect a contact state of the bioelectrode with the needle bed 10. For example, the sensing module may be adhered to a surface of the vacuum adsorption module for supporting the bioelectrode, and when the bioelectrode is supported, the sensing module is located between the bioelectrode and the vacuum adsorption module. In this case, whether the needle bed 10 and the bioelectrode have been successfully contacted can be judged by the sensing module when the bioelectrode is tested and measured, and the test accuracy is further improved.

As shown in fig. 1, in some examples, the testing apparatus 1 may further include a control module (not shown), the control module may include a control host 13, a display 14, an operating unit 15, and a PLC module (not shown), the control host 13 may be configured to process data and generate control instructions, the display 14 may be configured to display an operation interface and a test result, the operating unit 15 may be configured to perform external operations, and the PLC module may be configured to receive the control instructions and may control the driving device 12 and the vacuum suction device 11 according to the control instructions. Under the condition, the testing equipment 1 is controlled by the control module to test the bioelectrode, the misoperation of manual measurement and the damage of the bioelectrode caused by the manual measurement can be reduced, and therefore, the testing accuracy and efficiency are improved, and the requirement of mass production is favorably met.

In some examples, the control module may be electrically connected to the data acquisition module, the control module may be electrically connected to the driving device 12, and the driving device 12 may drive the needle bed 10 to move and has a preset movement path and a preset movement stroke. Under the condition, the driving device 12 is controlled through the control module and the needle bed 10 is driven to move to the preset position so as to complete the test of the bioelectrode, and meanwhile, the data acquisition module transmits test data to the control module, so that the misoperation of manual measurement and the damage to the bioelectrode caused by the manual measurement can be reduced, the test accuracy and efficiency are improved, and the requirement of mass production is favorably met.

Fig. 2 is a view showing a scene in which the needle bed 10 of the testing apparatus according to the present invention is engaged with the vacuum adsorption device 11; fig. 3 is a schematic structural view showing a needle bed 10 according to the present invention; fig. 4 is an enlarged view showing the probe unit 20 according to the present invention;

fig. 5 is a schematic structural view showing a retractable probe 30 according to the present invention; fig. 6 is a sectional view showing the retractable probe 30 according to the present invention.

In some examples, needle bed 10 may be electrically connected to a data acquisition module. As shown in fig. 3, needle bed 10 may include a plurality of sets of probe units 20, and probe units 20 may include a plurality of electrically conductive probes 30 in the form of columns (see fig. 4).

As shown in fig. 2 and 3, in some examples, needle bed 10 may further include positioning posts 21 for aligning with vacuum suction devices 11. In this case, the needle bed 10 and the vacuum adsorption device 11 can be aligned by the positioning column 21 to test the bioelectrode (see fig. 3), thereby reducing test data errors due to misalignment.

In some examples, needle bed 10 may also include a mounting plate 22 with circuitry integrated therein and electrically connected to the data acquisition module. In this case, the mounting plate 22 can be used for mounting the probe unit 20 and the positioning column 21, and is electrically connected to the data acquisition module for data communication, and can transmit the test data of the probe unit 20 to the data acquisition module or the control module for processing.

In some examples, the probe unit 20 may include 2-6 conductive probes 30 in a cylinder, that is, the probe unit 20 may be composed of 2, 3, 4, 5 and 6 probes 30, and when the probe unit 20 is used to perform measurement, the probe unit 20 and the bioelectrode located on the vacuum adsorption device 11 may correspond to each other. In this case, the plurality of probes 30 of the probe unit 20 can perform a test on a single bioelectrode, and obtain test data of different regions or structures of the bioelectrode. In addition, the probe unit 20 can also obtain data of test measurement of a plurality of bioelectrodes simultaneously when testing the bioelectrodes, so that the efficiency of test measurement is improved, and the requirement of mass production is further met.

In other examples, the probe unit 20 may be formed by combining more than 6 probes 30.

As shown in fig. 4-6, in some examples, the probe 30 may include a probe head 301 for contacting the bioelectrode, a probe middle 302 provided with the elastic member 52, and a probe tail 303 for securing the probe 30. Under the condition, the needle bed 10 can utilize the telescopic characteristic thereof to test the bioelectrode, and is connected with the probe tail 303 through the data acquisition module to send the data to the control module, so that the damage of a common test probe to the surface of the bioelectrode during the test can be reduced, and the performance quality of the bioelectrode can be judged in the control module through the data; in addition, a plurality of bioelectrodes can be simultaneously tested and measured by the plurality of sets of probe units 20, thereby improving the testing efficiency; by means of the plurality of probes 30 of the single probe unit 20, different regions or sites of a single bioelectrode can be tested, whereby a plurality of test data of a single bioelectrode can be obtained.

As shown in fig. 4, in some examples, needle bed 10 may further include sensing pins 31 for making contact with a sensing module to form an inductive test circuit. The sensing pins 31 are also used to transmit the sensing data obtained from the sensing test circuit to the control module through the electrical connection. In this case, the cooperation between the detection needle 31 and the sensing module can detect the contact state between the retractable probe 30 and the bioelectrode in advance before the contact test between the retractable probe 30 and the bioelectrode, thereby reducing the test data errors caused by the contact failure or poor contact.

In other examples, the probe middle portion 302 and the probe tail portion 303 may be combined to be referred to as the probe tail portion 303. In other examples, a plurality of probe 30 combinations in needle bed 10 may not distinguish probe unit 20, i.e., needle bed 10 may directly include a plurality of probes 30.

In some examples, the electrically conductive probe 30 in the form of a cylinder may be one of regularly shaped cylinders such as a circular cylinder, a square cylinder, a polygonal cylinder, and the like. In this case, the regular shape of the pillar can make the probe 30 more beautiful and easier to obtain the resistivity or resistance value, so that the aforementioned resistance value can be excluded to reduce the error of the test data when the bio-electrode is measured.

As shown in fig. 6, in some examples, the probe middle 302 may be a cylinder with a groove 50, and the groove 50 may match the shape of the probe head 301 to enable the probe head 301 to fit into the groove 50. In some examples, a resilient element 52 may be disposed in the recess 50, and the resilient element 52 may be disposed within the recess 50 and connect the probe head portion 301 and the probe middle portion 302. In some examples, the resilient element 52 may be at least one of a spring or a leaf spring, and may have a preset compression value. In this case, the probe middle part 302 can cooperate with the probe head part 301 to form a telescopic structure, the telescopic structure can reduce the damage caused by the surface when the probe 30 contacts with the bioelectrode, and the elastic element 52 connects the probe middle part 302 with the probe head part 301, so that the buffer can be formed when the bioelectrode is tested and measured, the contact surface of the probe 30 and the bioelectrode is stabilized, and the test accuracy is improved.

As shown in fig. 6, in some examples, the probe head portion 301, the probe middle portion 302, and the probe tail portion 303 may be connected in sequence, the probe head portion 301 may be coaxially movable relative to the probe middle portion 302 and the probe middle portion 302 may have a stopper portion 51 to define a movement range of the probe head portion 301. Therefore, when the bioelectrode is tested and measured, the probe 30 with the telescopic structure can reduce the damage to the surface of the bioelectrode when the probe 30 is in contact with the bioelectrode, and improve the yield of the bioelectrode when shipped.

In some examples, the stop 51 may be a protrusion disposed at a predetermined position in the middle 302 of the probe. For example, the stop 51 may be an inward projection of the end of the recess 50, where the end is the end near the probe head 301.

In some examples, the end of the probe head 301 at the end connected to the resilient element 52 may have a diameter slightly larger than the probe head 301 as a whole. That is, there may be a bump at the end that connects to the probe middle 302. In this case, the movement of the probe head 301 can be effectively restricted by the stopper portion 51, and the probe head 301 can be moved within a predetermined range.

In some examples, the probe middle 302 may be coupled to the probe tail 303 by at least one of bonding, snapping, threading, or integral molding. In some examples, the input of the data acquisition module may be in communication with the middle of the probe 302 or the tail of the probe 303. In this case, a data acquisition circuit can be formed to perform acquisition processing of test data obtained by testing the bioelectrode by the probe 30.

Fig. 7 is a schematic view showing embodiment 1 of a probe head 301 of a retractable probe according to the present invention.

As shown in fig. 4-7, in some examples, the probe head 301 can include a first end 40 connected to the probe middle 302 and having a cylindrical shape and a second end 41 in contact with the bioelectrode, the second end 41 can have a hemispherical shape (see fig. 7), and the first end 40 can have a diameter smaller than the diameter of the probe middle 302. In this case, the first end portion 40 having a diameter smaller than that of the probe central portion 302 can be disposed and connected to the probe central portion 302 to be relatively movable in the coaxial direction, and the second end portion 41 having a hemispherical shape can reduce damage to the surface of the bioelectrode when contacting by using the spherical characteristic, compared to other sharp shapes.

Figure 8 is a schematic diagram showing a probe head embodiment 2 of a retractable probe according to the present invention; fig. 9 is a schematic diagram showing a probe head embodiment 2 of a retractable probe according to the present invention.

In other examples, as shown in fig. 8, the second end 41 may also be ellipsoidal.

In other examples, as shown in fig. 9, the second end portion 41 may also be a tapered or reduced shape from the middle end to the end, i.e. a cone, a truncated cone, and the end may be an ellipsoid, a spherical arc. In this case, the second end portion 41 of the cone or the truncated cone can reduce the cost for manufacturing the probe 30 and the resistance value of the probe 30 itself and can reduce the inaccuracy of the test due to the oversize of the probe 30 when testing a plurality of fine test points, and the tail portion of the sphere or the arc can reduce the damage to the bioelectrode when testing.

In some examples, the material of the probe 30 may be one or an alloy of silver, copper, gold, aluminum, tungsten, nickel, iron, and platinum. In this case, the probe 30 of one or an alloy of silver, copper, gold, aluminum, tungsten, nickel, iron, and platinum can apply and receive an electrical signal to the bioelectrode to thereby perform a test measurement on the bioelectrode, and the more conductive the material of the probe 30, the more accurate the test data can be.

In other examples, probe 30 may be one or an alloy of beryllium, nickel, iron, carbon, silicon, or the like, silver-plated on the substrate surface, copper, gold, aluminum, tungsten, nickel, iron, and platinum.

According to the utility model discloses, can provide a bioelectrode test equipment with scalable probe. This test equipment can reduce the damage that the testing process caused to bioelectrode when testing measurement to bioelectrode, improves test stability, and can improve the test accuracy and satisfy the mass production demand.

While the present invention has been described in detail in connection with the drawings and examples, it is to be understood that the above description is not intended to limit the invention in any way. Those skilled in the art can modify and change the present invention as necessary without departing from the spirit and scope of the present invention, and such modifications and changes are intended to fall within the scope of the present invention.

Claims (10)

1. A test apparatus for a bioelectrode having a retractable probe, the test apparatus comprising: the system comprises a needle bed, a data acquisition module for collecting test data and a vacuum adsorption device for bearing a bioelectrode;

the needle bed is connected with the data acquisition module through a circuit;

the needle bed is matched with the vacuum adsorption device to test the bioelectrode;

the needle bed comprises a plurality of groups of probe units, each probe unit comprises a plurality of conductive probes in a column shape, and each probe comprises a probe head part used for contacting the bioelectrode, a probe middle part provided with an elastic element and a probe tail part used for fixing the probe.

2. The test apparatus of claim 1,

the probe comprises a probe head, a probe middle part and a probe tail, wherein the probe head, the probe middle part and the probe tail are sequentially connected, the probe head can coaxially move relative to the probe middle part, the probe middle part is provided with a limiting part so as to limit the probe head to move relative to the probe in a preset range, and the probe middle part is connected with the probe tail in at least one of bonding, clamping, thread or integrated forming modes.

3. The test apparatus of claim 2,

the probe head comprises a first end part which is connected with the middle part of the probe and is a cylinder and a second end part which is contacted with the bioelectrode, the second end part is hemispherical, and the diameter of the first end part is smaller than that of the middle part of the probe.

4. The test apparatus of claim 2,

the middle part of the probe is a cylinder with a groove, the shape of the groove is matched with that of the head part of the probe, the groove is provided with an elastic element, the elastic element is connected with the head part of the probe and the middle part of the probe in the groove, and the elastic element is at least one of a spring or a shrapnel and has a preset compression value.

5. The test apparatus of claim 1,

the probe unit comprises 2-6 conductive probes in a column shape, and when the probe unit is used for measurement, the probe unit is matched with the biological electrodes one by one.

6. The test apparatus of claim 1,

the probe is made of one or alloy of silver, copper, gold, aluminum, tungsten, nickel, iron and platinum.

7. The test apparatus of claim 1,

the probe tail part of the needle bed is fixed with the driving device through at least one of embedding, clamping, bonding, threads or magnetic attraction, and the driving device drives the needle bed to be in contact with the bioelectrode.

8. The test apparatus of claim 1,

the induction module is detachably arranged on the surface of a preset position of the vacuum adsorption device in a sticking mode and is used for detecting the contact state of the bioelectrode and the needle bed.

9. The test apparatus of claim 7,

the control device comprises a control host, a display, an operation part and a PLC module, wherein the control host is used for processing data and generating control instructions, the display is used for displaying an operation interface and a test result, the operation part is used for external operation, and the PLC module is used for receiving the control instructions and controlling the driving device and the vacuum adsorption device according to the control instructions.

10. The test apparatus of claim 9,

the control module is connected with the driving device through a circuit, the driving device is provided with a preset movement path and a preset movement stroke, and the control module is connected with the data acquisition module through a circuit.

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