Sample cup detection device and thrombelastogram instrument

Abstract

The utility model discloses a sample cup detection device and thrombelastogram instrument, including: a PCB circuit board, the PCB circuit board is equipped with a signal emitter and a signal receiver, a signal transmission channel is formed between the signal emitter and the signal receiver; the mounting base is used for placing and mounting a sample cup mounting base, and when the sample cup is placed on the mounting base, a part of the sample cup is located in the signal transmission channel; when the sample cup is placed on the mounting seat, the signal transmission channel is open, and when the sample cup is not placed on the mounting seat, the signal transmission channel is closed. According to the scheme, the in-situ information of the sample cup can be judged according to whether the signal receiver receives the signal or not, so that the cost increase caused by using a diffuse reflection type sensor is avoided, and the signal transmitter and the signal receiver are arranged on the same PCB; the misjudgment of a detection in-place result caused by the influence of an assembly error when a split correlation type sensor is used is avoided, so that the cost of the sample cup detection device can be reduced, and the misjudgment of the detection result is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to coagulation function inspection technical field, especially a kind of sample cup detection device and thromboelastometry. BACKGROUND

[0002] Thromboelastography (TEG) is a kind of medical equipment by simulating human coagulation process, real-time monitoring whole blood coagulation and fibrinolysis state. Its core advantage lies in dynamic, whole blood detection, can comprehensively evaluate the comprehensive action of coagulation factor, platelet, fibrinogen and fibrinolysis system, is widely used in clinical coagulation dysfunction diagnosis and treatment guidance. Among them, sample cup detection device is the core component of thromboelastography.

[0003] However, the traditional sample cup detection device, sample cup in situ detection uses diffuse reflection sensor or split pair of sensors, resulting in higher cost, and prone to overall assembly error and lead to detection in situ result misjudgment.

[0004] Therefore, how to reduce the cost of sample cup detection device, while avoiding detection result misjudgment, is the problem that the present technical personnel urgently solves. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a kind of sample cup detection device, reduces the cost of sample cup detection device, while avoiding detection result misjudgment.

[0006] The utility model further provides a kind of thromboelastography including above-mentioned sample cup detection device.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of sample cup detection device, comprising:

[0009] PCB circuit board, signal transmitter and signal receiver are installed in the PCB circuit board, signal transmission channel is formed between the signal transmitter and the signal receiver;

[0010] Mounting seat, the mounting seat is used to place installation sample cup, and when the sample cup is placed on mounting seat, part of the sample cup is located in the signal transmission channel;

[0011] Wherein, when the sample cup is placed on mounting seat, the signal transmission channel is open circuit, when the mounting seat is not placed the sample cup, the signal transmission channel is passage.

[0012] Preferably, the PCB circuit board is in a U-shaped structure, the signal transmitter is arranged on a first side of the PCB circuit board, and the signal receiver is arranged on a second side of the PCB circuit board, the first side and the second side being symmetrically arranged.

[0013] The PCB circuit board is provided with a connector for connecting a power supply.

[0014] The emitting surface of the signal transmitter and the receiving surface of the signal receiver are oppositely arranged.

[0015] Preferably, the signal transmitter is an infrared emitting diode, and the signal receiver is an infrared receiving triode.

[0016] Preferably, the control board is further provided with an MCU module.

[0017] An ADC interface of the MCU module is connected to an output signal end of the infrared receiving triode, and the MCU module can determine whether the sample cup is present on the signal transmission channel according to the output signal of the infrared receiving triode.

[0018] A DAC interface of the MCU module is connected to the infrared emitting diode.

[0019] Preferably, the MCU module is pre-set with a digital signal threshold value, the MCU module can convert the output signal into a digital signal, and the MCU module can determine whether the sample cup is present on the signal transmission channel according to a comparison result between a value of the digital signal and the digital signal threshold value.

[0020] Preferably, the mounting seat comprises a receiving cavity, the receiving cavity is in a cylindrical structure with an open top end, and the diameter of the receiving cavity is greater than the diameter of the sample cup, so that the sample cup can be placed in the receiving cavity.

[0021] Two through holes are arranged on the circumferential wall of the receiving cavity in the radial direction, the through holes are symmetric about the axis of the receiving cavity, and the through holes are both located on the signal transmission channel.

[0022] Preferably, the mounting seat further comprises a clamping structure, the clamping structure forms a clamping groove for clamping the bottom of the receiving cavity.

[0023] Preferably, the clamping structure comprises a first clamping block and a second clamping block, and the clamping groove is formed between the first clamping block and the second clamping block.

[0024] Preferably, the signal transmitter and the signal receiver are mounted on the PCB circuit board by welding; and / or,

[0025] The PCB circuit board is provided with a plurality of mounting holes.

[0026] A thrombelastogram includes the sample cup detection device.

[0027] From the above technical solution, the sample cup detection device provided by the utility model can judge the in-place information of the sample cup according to whether the signal receiver receives a signal, avoid the cost increase caused by the use of the diffuse reflection sensor, and the signal transmitter and the signal receiver are arranged on the same PCB circuit board, avoid the detection in-place result misjudgment caused by the use of the split type sensor which is easily affected by the overall assembly error, so that the utility model can reduce the cost of the sample cup detection device and avoid the detection result misjudgment.

[0028] The utility model also provides a kind of thrombelastogram, since the above sample cup detection device is used, it also has corresponding beneficial effect, specifically can refer to the foregoing description, here no longer tediously. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0030] Figure 1 The sample cup detection device provided by the embodiments of the utility model is a three-dimensional schematic diagram.

[0031] Figure 2 The cooperation relationship between the sample cup and the PCB circuit board provided by the embodiments of the utility model is a first perspective view.

[0032] Figure 3 The cooperation relationship between the sample cup and the PCB circuit board provided by the embodiments of the utility model is a second perspective view.

[0033] Figure 4 The circuit composition diagram provided by the embodiments of the utility model.

[0034] Figure 5 The circuit principle diagram provided by the embodiments of the utility model.

[0035] The meanings of various reference signs in the drawings are as follows:

[0036] 10 is a PCB circuit board, 11 is an infrared emitting diode, 12 is an infrared receiving triode, 13 is a connector, 14 is a mounting hole, and 15 is a signal transmission channel.

[0037] 20 is a mounting seat, 21 is a containing cavity, 22 is a through hole, 23 is a clamping groove, 24 is a first clamping block, 25 is a second clamping block;

[0038] 30 is a sample cup;

[0039] 40 is a control panel;

[0040] R1 is a pull-up resistor, R2 is a filter resistor, C1 is a filter capacitor, and R3 is a current limiting resistor. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] The sample cup detection device provided by the embodiment of the utility model comprises:

[0043] The PCB circuit board 10 is provided with a signal transmitter and a signal receiver, and a signal transmission channel 15 (which can be understood as light) is formed between the signal transmitter and the signal receiver, and the specific structure is as shown in Figure 1 ;

[0044] The mounting seat 20 is used for placing and mounting the sample cup 30, and when the sample cup 30 is placed on the mounting seat 20, a part of the sample cup 30 is located in the signal transmission channel 15, and the specific structure is as shown in Figure 1 ;

[0045] When the sample cup 30 is placed on the mounting seat 20, the signal transmission channel 15 is open circuit, and when the sample cup 30 is not placed on the mounting seat 20, the signal transmission channel 15 is a passage.

[0046] In the above technical solution, when the sample cup 30 is placed on the mounting seat 20, a part of the sample cup 30 is located between the signal transmitter and the signal receiver (blocking the transmission of the signal), so that the signal receiver cannot receive the signal transmitted by the signal transmitter. When the sample cup 30 is not placed on the mounting seat 20, the signal transmission channel 15 is a passage, and the signal receiver receives the signal transmitted by the signal transmitter. Therefore, the in-place information of the sample cup can be judged according to whether the signal receiver receives the signal, avoiding the increase in cost caused by the use of the diffuse reflection sensor. The signal transmitter and the signal receiver are arranged on the same PCB circuit board 10, avoiding the detection in-place result misjudgment caused by the use of the split pair of sensors which is easily affected by the overall assembly error. Therefore, the cost of the sample cup detection device can be reduced, and the detection result misjudgment can be avoided.

[0047] In order to make the detection device more compact, the PCB circuit board 10 is in a U-shaped structure, the signal transmitter is arranged on the first side of the PCB circuit board 10, the signal receiver is arranged on the second side of the PCB circuit board 10, and the first side and the second side are symmetrically arranged. The specific structure of the PCB circuit board 10 is shown in Figure 2

[0048] As shown in Figure 3 , the PCB circuit board 10 is provided with a connector 13 for connecting a power supply. The arrangement of the connector 13 facilitates the access of the power supply, and the connector 13 can also access the ADC interface of the MCU module and the DAC interface of the MCU module, facilitating the transmission and control of the signal.

[0049] The emitting surface of the signal transmitter and the receiving surface of the signal receiver are arranged opposite to each other to form a signal transmission channel 15. In this way, the signal can be quickly transmitted and interference can be avoided.

[0050] Further optimization of the above technical solution is shown in Figure 2 , the signal transmitter is an infrared emitting diode 11, and the signal receiver is an infrared receiving triode 12. Since the infrared emitting diode 11 and the infrared receiving triode 12 are standard components, the cost can be reduced.

[0051] Further optimization of the above technical solution is shown in Figure 4 and Figure 5 , further comprising a control board 40 provided with an MCU module;

[0052] The ADC interface of the MCU module is connected to the output signal end 12 of the infrared receiving triode. The MCU module can determine whether there is a sample cup 30 on the signal transmission channel 15 according to the output signal of the infrared receiving triode 12.

[0053] ​The DAC interface of the MCU module is connected with the infrared emitting diode 11, and the DAC interface of the MCU module can convert a digital signal into an analog voltage, so as to adjust the current of the infrared emitting diode 11, and thus the batch difference of the compatible components and the transparency difference of the sample cup 30 can be compensated, and more stable and flexible in-situ detection can be realized.

[0054] In the above technical solution, an external power supply is used to supply power for the infrared receiving triode 12 and the infrared emitting diode 11, the DAC interface of the MCU module is used as a control signal, and a voltage value of 0-3.3V can be output, the output value can be adjusted to adjust the luminous current of the infrared emitting diode 11, and thus the brightness of the infrared emitting diode 11 can be adjusted; when the sample cup detection device is used, the infrared emitting diode 11 continuously emits infrared light, when there is no sample cup 30 (i.e. the cup is not in place), the infrared light is received by the receiving surface of the infrared receiving triode 12, the collector and the emitter of the infrared receiving triode 12 are turned on due to the characteristics of the infrared receiving triode 12, and a low-level voltage is output. When the sample cup 30 is in place, the sample cup 30 blocks the infrared light emitted by the infrared emitting diode 11, and the infrared light cannot be received by the receiving surface of the infrared receiving triode 12, the collector is pulled up to 5V, a high-level voltage is output, and the high-level voltage signal is transmitted to the ADC interface of the MCU module; the MCU module determines whether the sample cup 30 is in place according to the low-level voltage signal and the high-level voltage signal. If the MCU module receives the low-level voltage signal, it is determined that the sample cup 30 is not in place; if the MCU module receives the low-level voltage signal, it is determined that the sample cup 30 is in place.

[0055] Further, the above technical solution is further optimized, the MCU module is pre-set with a digital signal threshold value, the MCU module can convert the output signal into a digital signal, and the MCU module can determine whether the sample cup 30 is on the signal transmission channel 15 according to the comparison result between the digital signal value and the digital signal threshold value.

[0056] In the above solution, in one embodiment, when the digital signal value exceeds the digital signal threshold value, it is determined that the sample cup 30 is on the signal transmission channel 15, and when the digital signal value does not exceed the digital signal threshold value, it is determined that the sample cup 30 is not on the signal transmission channel 15; or in another embodiment, when the digital signal value does not exceed the digital signal threshold value, it is determined that the sample cup 30 is on the signal transmission channel 15, and when the digital signal value exceeds the digital signal threshold value, it is determined that the sample cup 30 is not on the signal transmission channel 15.

[0057] In an optional embodiment, in order to better fix the sample cup 30, the sample cup 30 is provided with a plurality of fixing holes 31, and the fixing holes 31 are arranged in a circular manner, and the fixing holes 31 are arranged in a circular manner. Figure 1As shown, the mounting base 20 includes a receiving cavity 21, which is a cylindrical structure with an open top. The diameter of the receiving cavity 21 is larger than the diameter of the sample cup 30 so that the sample cup 30 can be placed into the receiving cavity 21.

[0058] The peripheral wall of the receiving cavity 21 is provided with two through holes 22 along its radial direction. The through holes 22 are symmetrical about the axis of the receiving cavity 21, and both through holes 22 are located on the signal transmission channel 15. The arrangement of the through holes 22 is beneficial to the transmission of signals. Preferably, the through holes 22 are on the same radial direction.

[0059] like Figure 1 As shown, in order to secure the bottom of the receiving cavity 21, the mounting base 20 further includes a locking structure, which forms a locking groove 23 for locking the bottom of the receiving cavity 21.

[0060] Optimize the above technical solutions, such as Figure 1 As shown, the locking structure includes a first locking block 24 and a second locking block 25, with a locking groove 23 formed between the first locking block 24 and the second locking block 25. Preferably, the first locking block 24 and the second locking block 25 can move relative to each other to accommodate the diameter of the receiving cavity 21.

[0061] In one embodiment, the infrared emitting diode 11 and the infrared receiving transistor 12 are mounted on the PCB circuit board 10 by soldering. This integrated through-beam cup detection structure further reduces the impact of assembly differences on the in-situ detection results of the sample cup.

[0062] like Figure 2 As shown, the PCB circuit board 10 has multiple mounting holes 14. The mounting holes 14 enable the PCB circuit board 10 to be assembled quickly, saving manpower.

[0063] This utility model also provides a thromboelastography instrument, including: the sample cup detection device as described above. Since this solution uses the aforementioned sample cup detection device, it has corresponding beneficial effects, as detailed in the preceding description, which will not be repeated here.

[0064] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features.

[0065] The following is a further description of this solution with reference to specific embodiments:

[0066] The sample cup detection device has the advantages of small size, low cost, stable detection and strong adaptability.

[0067] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments.

[0068] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sample cup detection device, characterized by, The application relates to a signal transmission device, which comprises the following parts: a PCB (10) provided with a signal transmitter and a signal receiver, and a signal transmission channel (15) formed between the signal transmitter and the signal receiver; a mounting seat (20) for placing a sample cup (30), and a part of the sample cup (30) is located in the signal transmission channel (15) when the sample cup (30) is placed on the mounting seat (20); wherein the signal transmission channel (15) is disconnected when the sample cup (30) is placed on the mounting seat (20), and the signal transmission channel (15) is connected when the sample cup (30) is not placed on the mounting seat (20).

2. The sample cup detection device of claim 1, wherein, The PCB (10) is in a U-shaped structure, the signal transmitter is arranged on a first side of the PCB (10), the signal receiver is arranged on a second side of the PCB (10), and the first side and the second side are symmetrically arranged; the PCB (10) is provided with a connector (13) for connecting a power supply; wherein the emitting surface of the signal transmitter and the receiving surface of the signal receiver are oppositely arranged.

3. The sample cup detection device of claim 2, wherein, The signal transmitter is an infrared emitting diode (11), and the signal receiver is an infrared receiving triode (12).

4. The sample cup detection device of claim 3, wherein, The device further comprises a control board (40) provided with an MCU module; an ADC interface of the MCU module is connected to an output signal end of the infrared receiving triode (12), wherein the MCU module can judge whether the sample cup (30) is placed on the signal transmission channel (15) according to the output signal of the infrared receiving triode (12); a DAC interface of the MCU module is connected to the infrared emitting diode (11).

5. The sample cup detection device of claim 4, wherein, The MCU module is provided with a digital signal threshold value, the MCU module can convert the output signal into a digital signal, and the MCU module can judge whether the sample cup (30) is placed on the signal transmission channel (15) according to a comparison result between the digital signal value and the digital signal threshold value.

6. The sample cup detection device of claim 1, wherein, The mounting seat (20) comprises a containing cavity (21) which is in a cylindrical structure with an open top end, and the diameter of the containing cavity (21) is larger than that of the sample cup (30), so that the sample cup (30) can be placed in the containing cavity (21); two through holes (22) are arranged on the circumferential wall of the containing cavity (21) along the radial direction, the through holes (22) are symmetric about the axis of the containing cavity (21), and the through holes (22) are both located on the signal transmission channel (15).

7. The sample cup detection device of claim 6, wherein, The mounting seat (20) further comprises a clamping structure which forms a clamping groove (23) for clamping the bottom of the containing cavity (21).

8. The sample cup detection device of claim 7, wherein, The clamping structure comprises a first clamping block (24) and a second clamping block (25), and the first clamping block (24) and the second clamping block (25) form the clamping groove (23).

9. The sample cup detection device of claim 1, wherein, The signal transmitter and the signal receiver are mounted on the PCB circuit board (10) by welding; and / or, The PCB circuit board (10) is provided with a plurality of mounting holes (14).

10. A thrombelastograph, characterized by Comprising: The sample cup detection device according to any one of claims 1-9.

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