Experiment needle vertical position detection device for in-vitro diagnostic equipment

Abstract

The utility model discloses an experimental needle vertical position detection device for in vitro diagnostic equipment, which comprises a sample frame base and a detection block arranged on the sample frame base, a conductive band is arranged between the sample frame base and the detection block, the upper surface of the detection block is vertically and downwards provided with a detection hole, and the detection hole extends downwards to the position of the conductive band; a mounting chamber is formed in the sample frame base, a storage battery E and a detection circuit are arranged in the mounting chamber, the storage battery is used for providing electric energy for the detection circuit, and the detection circuit is used for sending out a needle point in-place signal when detecting that the needle point of the liquid injection needle is in contact with the conductive band. According to the utility model, the defects that manual visual judgment is limited by space, visual observation is not easy, and the debugging accuracy is poor are overcome, the consistency of a liquid injection needle position debugging process is ensured, the working efficiency of single debugging is improved, and rework caused by manual visual difference is effectively avoided. Meanwhile, single-person debugging operation is achieved, manpower and material resources are saved, and the circuit is simple in structure, ingenious in structural design and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to an in vitro diagnostic device, in particular to a vertical position detection device for an experimental needle of an in vitro diagnostic device. Background Art

[0002] To achieve the full-automatic operation of an in vitro diagnostic device, the host computer needs to control each module of the in vitro diagnostic device to move to a specified position to perform relevant actions. These specified positions need to be manually debugged and pulse-saved for each module position in advance. As a core module of the in vitro diagnostic device, whether the vertical single-module debugging position of the injection needle is accurate is closely related to the performance of the in vitro diagnostic device.

[0003] Currently, for the single-module debugging of the injection needle in the vertical direction, the host computer is manually operated to add / subtract pulses to control the injection needle to fall to the bottom position of the sample tube, and the single-module debugging position is confirmed by manually observing the deformation of the injection needle tip touching the bottom + buffer spring. Its deficiencies are: 1. Low single-module debugging efficiency: Since the debugging station is far from the position where the injection needle module is located, the position is not easy to observe, and two people are required to cooperate for single-module debugging, that is, one person observes the position state of the injection needle, and the other person operates the host computer to control the movement of the injection needle. 2. Poor single-module debugging accuracy: Limited by space, it is not easy to observe the movement position of the injection needle manually, and it is impossible to ensure the consistency of the injection needle position debugging process. Summary of the Invention

[0004] In view of this, the utility model provides a vertical position detection device for an experimental needle of an in vitro diagnostic device, which realizes the consistency of the debugging process and the debugging work efficiency.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] The vertical position detection device for an experimental needle of the in vitro diagnostic device of the utility model includes a sample rack base and a detection block placed thereon. A conductive belt is arranged between the sample rack base and the detection block. A detection hole is vertically opened downward on the upper surface of the detection block, and the detection hole extends downward to the position of the conductive belt; an installation chamber is opened on the sample rack base, and a storage battery E and a detection circuit are arranged in the installation chamber. The storage battery is used to supply electric energy to the detection circuit, and the detection circuit is used to detect and send out the signal that the needle tip arrives when the injection needle tip contacts the conductive belt.

[0007] Optionally, the detection circuit includes a detection indication unit and a needle tip arrival indication unit;

[0008] The detection indication unit includes transistors T1 and T2. The emitter of transistor T1 is connected to the negative electrode of the first light-emitting diode D1. The positive electrode of the first light-emitting diode D1 is connected to the positive electrode of the storage battery E. The base of transistor T1 is connected to the collector of transistor T2. The collector of transistor T1 and the emitter of transistor T2 are connected to the ground terminal GND. The base of transistor T2 is connected to the ground terminal GND through a resistor R1. The first light-emitting diode D1 is used to indicate the working state of the detection circuit.

[0009] The needle tip in-place indication unit includes transistors T3 and T4. The emitter of transistor T3 is connected to the positive electrode of the storage battery E. The collector of transistor T3 is connected to the base of transistor T4. The emitter of transistor T4 is connected to the positive electrode of the second light-emitting diode D2. The negative electrode of the second light-emitting diode D2 is connected to the ground terminal GND. The collector of transistor T4 is connected to the positive electrode of the storage battery E and the arched elastic steel sheet. The base of transistor T3 is respectively connected to the conductive strip through a resistor R2, connected to the base of transistor T2 through a voltage regulator diode Dw, and connected to the positive electrode of the storage battery E through a resistor R3. The second light-emitting diode D2 is used for needle tip in-place indication, and the arched elastic steel sheet is used for conductive connection with the injection needle.

[0010] Optionally, the conductive strip is a steel strip, and of course, a conductive rubber strip can also be selected.

[0011] The utility model solves the deficiencies of manual visual judgment, such as being limited by space and having poor debugging accuracy and difficult visual observation. It ensures the consistency of the injection needle position debugging process, improves the work efficiency of single-unit debugging, and effectively avoids rework caused by manual visual differences. At the same time, it realizes single-person debugging operation, saving manpower and material resources. The circuit of the utility model is simple in composition, ingenious in structural design, and low in manufacturing cost. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the utility model.

[0013] Figure 2 is Figure 1 the top view of

[0014] Figure 3 is a schematic diagram of the arched elastic steel sheet of the utility model.

[0015] Figure 4 is Figure 3 the top view of

[0016] Figure 5 is a circuit schematic diagram of the detection circuit of the utility model. Detailed Embodiments

[0017] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0018] It should be noted that in the description of the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0019] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected" and "coupled" may be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0020] As Figure 1 、 2 shown, the vertical position detection device for the experimental needle of the in vitro diagnostic device of the present utility model includes a sample rack base 1 and a detection block 2 placed thereon. A conductive belt 3 is provided between the sample rack base 1 and the detection block 2; beneficially or exemplarily, the conductive belt 3 is a steel belt, and of course, a conductive rubber belt can also be selected.

[0021] A detection hole 4 is vertically opened downward on the upper surface of the detection block 2, and the detection hole 4 extends downward to the position of the conductive belt 3; an installation chamber 5 is opened on the sample rack base 1, and a storage battery E and a detection circuit are arranged in the installation chamber 5. The storage battery E is used to supply electrical energy to the detection circuit, and the detection circuit is used to detect the needle tip in place signal when the tip of the injection needle 6 contacts the conductive belt 3.

[0022] Beneficially or exemplarily, as Figure 5 shown, the detection circuit includes a detection indication unit and a needle tip in place indication unit;

[0023] The detection indication unit includes transistors T1 and T2. The emitter of the transistor T1 is connected to the negative pole of the first light-emitting diode D1. The positive pole of the first light-emitting diode D1 is connected to the positive pole of the storage battery E. The base of the transistor T1 is connected to the collector of the transistor T2. The collector of the transistor T1 and the emitter of the transistor T2 are connected to the ground terminal GND. The base of the transistor T2 is connected to the ground terminal GND through a resistor R1. The first light-emitting diode D1 is used to indicate the working state of the detection circuit, that is, when the detection circuit is working, the first light-emitting diode D1 lights up. In this embodiment, the first light-emitting diode D1 is selected to be red.

[0024] The needle tip in-place indicating unit includes triodes T3 and T4. The emitter of triode T3 is connected to the positive pole of the storage battery E. The collector of triode T3 is connected to the base of triode T4. The emitter of triode T4 is connected to the positive pole of the second light-emitting diode D2. The negative pole of the second light-emitting diode D2 is connected to the ground terminal GND. The collector of triode T4 is connected to the positive pole of the storage battery E and the arched elastic steel sheet 7 (as Figure 3 , 4 shown); the base of triode T3 is respectively connected to the conductive strip 3 through resistor R2, connected to the base of triode T2 through voltage regulator diode Dw, and connected to the positive pole of the storage battery E through resistor R3; the second light-emitting diode D2 is used for indicating the in-place of the needle tip, and the arched elastic steel sheet 7 is used for electrically connecting with the injection needle; in this embodiment, the second light-emitting diode D1 is selected to be green.

[0025] When the present utility model works, the detection device is installed at the sample rack installation position of the in-vitro diagnostic device to be detected. The injection needle 6 is controlled by the upper computer to move up and down in the detection hole 4. When the injection needle 6 moves to the position where the needle tip contacts the conductive strip 3, based on the conductive characteristic of the injection needle 6, with the injection needle 6 itself as the carrier, the detection indicating unit circuit system forms a loop through the arched elastic steel sheet 7 attached to the needle arm of the injection needle 6, driving the second light-emitting diode D1 to light up, indicating that the injection needle 6 reaches the debugging position, completing the single debugging of the up and down positions of the injection needle 6, and the upper computer pulse parameters are clicked to be saved.

[0026] Finally, it should be emphasized that the above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions recorded in the foregoing embodiments without creative labor, or perform equivalent replacements for some of the technical features. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An experimental needle vertical position detection device for an in vitro diagnostic device, characterized in that: It includes a sample rack base and a detection block placed thereon. A conductive belt is provided between the sample rack base and the detection block. A detection hole is vertically opened downward on the upper surface of the detection block, and the detection hole extends downward to the position of the conductive belt. An installation chamber is opened on the sample rack base, and a storage battery E and a detection circuit are arranged in the installation chamber. The storage battery is used to supply electrical energy to the detection circuit, and the detection circuit is used to detect the needle tip in place signal when the injection needle tip contacts the conductive belt.

2. The experimental needle vertical position detection device for in vitro diagnostic equipment according to claim 1, characterized in that: The detection circuit includes a detection indication unit and a needle tip in place indication unit; The detection indication unit includes triodes T1 and T2. The emitter of triode T1 is connected to the negative electrode of the first light-emitting diode D1. The positive electrode of the first light-emitting diode D1 is connected to the positive electrode of the storage battery E. The base of triode T1 is connected to the collector of triode T2. The collector of triode T1 and the emitter of triode T2 are connected to the ground terminal GND. The base of triode T2 is connected to the ground terminal GND through resistor R1; The needle tip in place indication unit includes triodes T3 and T4. The emitter of triode T3 is connected to the positive electrode of the storage battery E. The collector of triode T3 is connected to the base of triode T4. The emitter of triode T4 is connected to the positive electrode of the second light-emitting diode D2. The negative electrode of the second light-emitting diode D2 is connected to the ground terminal GND. The collector of triode T4 is connected to the positive electrode of the storage battery E and an arched elastic steel sheet. The base of triode T3 is respectively connected to the conductive belt through resistor R2, connected to the base of triode T2 through voltage stabilizing diode Dw, and connected to the positive electrode of the storage battery E through resistor R3.

3. The vertical position detection device for the test needle of the in vitro diagnostic device according to claim 1, characterized in that: The conductive belt is a steel belt.

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