TWI792156B - Modified test strip structure - Google Patents

Abstract

The present invention provides a modified test strip structure, which includes a strip main body and a bumper. The strip main body has a detection area for contact with a sample to be tested and a circuit area that is not for contact with the sample to be tested. The detection area has a detection circuit electrically connected to the circuit area. The detection circuit is adapted for electrochemical reaction with the sample to be tested. The strip main body has a first end, a second end opposite to the first end, an upper surface and a lower surface. The detection circuit is disposed on the upper surface of the first end. The bumper is disposed on the lower surface of the strip main body so as to make the first end of the strip main body higher than the second end thereof when the modified test strip structure is placed on a desktop, thereby reducing the problem of sample contamination on the desktop during sampling.

Description

Improved structure of test piece

The invention relates to an electrochemical sensing technology, in particular to an improved structure of a test piece.

Electrochemical sensors (Electrochemical Sensors) have been maturely applied to the detection of various fluids. Many electrochemical sensors are used together with test strips, and these test strips are used to contact the samples to be tested. For the purpose of miniaturization and convenient use, most of the test strips are in the shape of a flat sheet with a small thickness, so the vertical distance between the electrochemical detection area and the desktop is short. In some application occasions, the existing test piece structure is likely to cause the sample to contaminate the table. Be careful not to smear on the tabletop to cause contamination.

The main purpose of the present invention is to provide a test piece that can reduce the occurrence of sample contamination on the desktop.

In order to achieve the above and other objects, the present invention provides an improved structure of a test piece, which includes a test piece body and a riser. The circuit area where the sample contacts, the detection area has a detection circuit, the detection circuit is electrically connected to the circuit area, and the detection circuit is for electrochemical reaction with the sample to be detected; wherein, the test piece body has a first end, an opposite At the second end, an upper surface, and a lower surface of the first end, the detection circuit is located on the upper surface of the first end; the pad is provided on the lower surface of the test piece body, and is used to place the test piece on a desktop with an improved structure Make the first end of the test piece body higher than the second end.

In the present invention, a height difference is formed between the first end and the second end of the test piece body by additionally setting up a spacer, and the first end of the test piece body is tilted, thereby avoiding or at least greatly reducing the detection of the sample applied to the first end. Inadvertently pollute the desktop when circuit.

Please refer to Figures 1 to 5, which show the first embodiment of the improved structure of the test strip of the present invention, wherein the improved structure of the test strip can be used for the detection of various fluids, and is used to detect whether the target analysis is contained in the sample to be tested The concentration of the substance, the target analyte and/or other values that need to be detected. The sample to be detected can be but not limited to blood, urine, water samples or other non-aqueous fluid samples. The target analyte can be But not limited to compounds such as glycated hemoglobin, blood sugar, heavy metals, nitrates, nitrites, allergens, formaldehyde, dissolved oxygen, etc. The values to be detected may be but not limited to physical parameters such as pH value and electrical conductivity. In a possible implementation, the improved structure of the test strip can be used in conjunction with a tester. When testing, the improved structure of the test piece can be inserted into the tester or mechanically connected in other ways, and the tester can send a detection signal for detection. In other possible implementations, the improved structure of the test strip can be used in conjunction with a receiving element that is not mechanically connected to the improved structure of the test strip. The mechanical connection refers to direct physical contact between the two elements, and the receiving element It can be but not limited to a mobile phone, a tablet computer, a computer or other devices that can form a wireless connection with the improved structure of the test piece and can display, process and/or relay and transmit detection parameter signals.

The improved structure of the test piece includes a test piece body 10, a power activation means and a riser 50. The test piece body 10 has a detection area 11 for contacting with the sample to be detected, and a detection area 11 not for contacting with the sample to be detected. Circuit area 12, an electrochemical processing unit 13, a wireless transmission unit 14, a power supply unit 15, a substrate 16, an assembled circuit board 17, a shrink film 20 and a protective case 30; in addition, the test piece body 10 also has a first end 101 , a second end 102 opposite to the first end 101 , an upper surface 103 and a lower surface 104 .

The detection area 11 has a detection circuit 111 located on the upper surface 103 of the first end 101. The detection circuit 111 is electrically connected to the circuit area 12 for electrochemical reaction with the sample to be detected; value, the detection circuit 111 may include but not limited to working electrodes, reference electrodes, auxiliary electrodes and/or detection electrodes; In vivo, chemical reagents, enzymes, catalysts and/or enzymes that facilitate the detection of target analytes or values to be detected.

The electrochemical processing unit 13, the wireless transmission unit 14 and the power supply unit 15 are located in the circuit area 12 and are covered by the shrink film 20, and the protective shell 30 is covered with the shrink film 20, but the protective shell 30 does not directly contact the electrochemical processing unit 13, The wireless transmission unit 14 and the power supply unit 15 avoid the formation of adhesion. The electrochemical processing unit 13 can be, for example, but not limited to a microprocessor, the wireless transmission unit 14 can be but not limited to a bluetooth transmission chip, and the power supply unit 15 can be a capacitor, a fuel cell or other rechargeable or non-rechargeable micro batteries. To supply power to the electrochemical processing unit 13 and the wireless transmission unit 14 .

Among them, the detection area 11 and the detection circuit 111 are arranged on the substrate 16, and the electrochemical processing unit 13, the wireless transmission unit 14, the power supply unit 15 and the circuit area 12 are arranged on the assembled circuit board 17 (PCB Assembly), that is, the present invention Before the assembled circuit board 17 is stacked with the substrate 16, the setting of the circuit area 12 and the assembly of the electrochemical processing unit 13, the wireless transmission unit 14 and the power supply unit 15 have been completed on it, and when the assembled circuit board 17 is stacked with the substrate 16 After assembly, the detection circuit 111 can be electrically connected to the circuit area 12 , for example, corresponding pins/pads can be provided between the assembled circuit board 17 and the substrate 16 , or the electrical connection can be assisted by conductive paste. In order to reduce the volume of the test piece body 10, at least one hollow area 161 that can accommodate the electrochemical processing unit 13, the wireless transmission unit 14 and the power supply unit 15 can be pre-opened on the substrate 16, so that when the assembled circuit board 17 is stacked with the substrate 16 After combination, the electrochemical processing unit 13 , the wireless transmission unit 14 and the power supply unit 15 can be embedded in the substrate 16 .

The power activation means is used for the user to selectively activate the ability of the power supply unit 15 to supply power to the electrochemical processing unit 13 and the wireless transmission unit 14, that is, when the power supply capability of the power supply unit 15 is activated, the power supply unit 15 can supply power to the electric The chemical processing unit 13 and the wireless transmission unit 14; on the contrary, when the power supply capability of the power supply unit 15 is not activated, the power supply unit 15 cannot supply power to the electrochemical processing unit 13 and the wireless transmission unit 14, so as to reserve power. The power activation means is, for example, a power blocking film 40 that can block the power supply unit 15 and other circuits. At this time, the test piece body 10 further includes a reed 18 electrically connected to the circuit area 12, and the power blocking film 40 is movably It is located between the substrate 16 and the assembled circuit board 17 and can be pulled away from a blocking position; when the power blocking film 40 is in the blocking position, the power blocking film 40 is spaced between the reed 18 and the power unit 15 And make the power supply unit 15 unable to supply power to the electrochemical processing unit 13 and the wireless transmission unit 14; The electrical connection is formed, so that the ability of the power supply unit 15 to supply power to the electrochemical processing unit 13 and the wireless transmission unit 14 is activated, and at the same time, the electrochemical processing unit 13 is also awakened to start the detection of the sample. It should be noted that in other possible implementations, the power activation means can also be changed to but not limited to switches and knobs; in other possible implementations, the power activation means is the action of putting the power supply unit into the test piece body.

The riser 50 is arranged on the lower surface 104 of the test piece body 10, and is used to make the first end 101 of the test piece body 10 higher than the second end 102 when the improved structure of the test piece is placed flat on the desktop. When placed on the desktop, the first end can be at least 1 mm higher than the second end, such as 3-5 mm, so as to avoid or at least greatly reduce the sample contamination of the desktop during sampling; in this embodiment, the pad 50 is only It is arranged on the partial lower surface of the test piece body 10 and adjacent to the first end 101, and can be integrally formed with the protective case 30, but the setting position and method of the spacer 50 are not limited thereto, for example, as shown in FIG. 6 In the second embodiment, the heightening member 50 is disposed on the complete lower surface of the protective case 30, and the two can be connected by bonding or other methods.

In an exemplary, non-limiting embodiment, the aforementioned improved structure of the test strip can be applied to an electrochemical sensing method, and the method includes the following steps in sequence: Use power activation means to activate the power supply unit 15 to supply power to the electrochemical processing unit 13 and the wireless transmission unit 14, thereby waking up the electrochemical processing unit 13 and the wireless transmission unit 14; Using the electrochemical processing unit 13 to send a control signal for performing detection to the detection circuit 111; After the detection circuit 111 receives the control signal, use the detection circuit 111 to perform an electrochemical reaction with the sample to be detected and feed back a feedback signal to the electrochemical processing unit 13; Using the electrochemical processing unit 13 to convert the feedback signal into a detection parameter signal; Use the electrochemical processing unit 13 to send the detection parameter signal essential oil wireless transmission unit 14 to the receiving unit that is mechanically connected to the improved structure of the test piece; and Displaying the detection parameter signal on a display of the receiving unit.

10: Test piece body 101: first end 102: second end 103: upper surface 104: lower surface 11: Detection area 111: detection circuit 12: Circuit area 13: Electrochemical processing unit 14: Wireless transmission unit 15: Power supply unit 16: Substrate 161: hollow area 17: Assembling the Circuit Board 18: reed 20: shrink film 30: Protective shell 40: Power blocking film 50: Elevator

Fig. 1 is a perspective view of the improved structure of the test piece according to the first embodiment of the present invention.

Fig. 2 is another perspective view of the improved structure of the test strip according to the first embodiment of the present invention.

Fig. 3 is an exploded view of the improved structure of the test piece according to the first embodiment of the present invention.

Fig. 4 is an exploded view of the test piece body in the improved structure of the test piece according to the first embodiment of the present invention.

Fig. 5 is a side view of the improved structure of the test piece according to the first embodiment of the present invention.

Fig. 6 is a side view of the improved structure of the test piece according to the second embodiment of the present invention.

10: Test piece body

101: first end

102: second end

104: lower surface

50: Elevator

Claims (5)

An improved structure of a test piece, comprising: a test piece body with a detection area for contacting with a sample to be detected and a circuit area not for contact with the sample to be detected, the detection area has a detection circuit, the detection The circuit is electrically connected to the circuit area, and the detection circuit is used for electrochemical reaction with the sample to be detected; wherein, the test piece body has a first end and a second end opposite to the first end , an upper surface and a lower surface, the detection circuit is located on the upper surface of the first end; and a heightening piece is arranged on the lower surface of the test piece body, and is used for laying flat on the improved structure of the test piece Make the first end of the test strip body higher than the second end when on a desktop; wherein the test strip body further has an electrochemical processing unit, a wireless transmission unit and a power supply unit arranged in the circuit area, The detection circuit is electrically connected to the electrochemical processing unit, and the electrochemical processing unit is used to send a control signal for performing detection to the detection circuit, and the detection circuit is used to communicate with the detection circuit after receiving the control signal The sample performs an electrochemical reaction and feeds back a feedback signal to the electrochemical processing unit, and the electrochemical processing unit is further used to convert the feedback signal into a detection parameter signal, and to send the detection parameter signal through the wireless transmission unit To a receiving unit not mechanically connected with the disposable self-sensing signal test piece, the power supply unit is used to supply power to the electrochemical processing unit and the wireless transmission unit. The improved structure of the test strip as described in claim 1 further includes a power activation means for the user to selectively activate the ability of the power supply unit to supply power to the electrochemical processing unit and the wireless transmission unit. The improved structure of the test piece as described in claim 1 or 2, wherein the test piece body includes a substrate and an assembled circuit board, the detection circuit is arranged on the substrate, the electrochemical processing unit, the wireless transmission unit and the power supply unit are set on the assembled circuit board. The improved structure of the test strip according to claim 3, wherein the substrate has at least one hollow area, and the electrochemical processing unit, the wireless transmission unit and the power supply unit are accommodated in the at least one hollow area. The improved structure of the test piece as described in claim 3 further includes a power interruption film, the test piece body further includes a reed electrically connected to the circuit layer, and the power interruption film is movably arranged on the substrate and The assembled circuit boards can be drawn away from a blocking position. When the power blocking film is in the blocking position, the power blocking film is spaced between the reed and the power supply unit so that the power supply The unit cannot supply power to the electrochemical processing unit and the wireless transmission unit. When the power supply blocking film is pulled away from the blocking position, the reed forms an electrical connection with the power supply unit so that the power supply unit is connected to the power supply unit. The electrochemical processing unit and the ability of the wireless transmission unit to supply power are activated.

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