Steel needle adaptive force detection tool for IVD

Abstract

The utility model discloses a steel needle adaptive force detection tool used for IVD, which comprises a first mounting piece, a second mounting piece, a monitoring unit, a positioning structure and a lifting mechanism arranged on the second mounting piece, and a lifting piece of the lifting mechanism is provided with a connecting piece used for fixing a steel needle. The positioning structure is provided with a clamping unit for clamping the reagent bottle and an adjusting unit for adjusting the position of the clamping unit; the monitoring unit comprises a controller and a pressure sensor used for monitoring the puncturing force of the steel needle, and the signal output end of the pressure sensor and the signal output end of the puncturing monitoring piece are connected with the signal input end of the controller. According to the utility model, the lifting mechanism is used for driving the steel needle to lift so as to pierce the sealing film, thereby realizing automatic detection and improving the detection efficiency. Besides, the speed or the stroke can be used as a variable, the corresponding steel needle puncturing strength at different speeds or strokes can be investigated, and data support is provided for research and development of in-vitro diagnosis equipment.

Description

Technical Field

[0001] The utility model relates to the detection of consumables in in vitro diagnostic equipment, in particular to a tool for detecting the adaptability of a steel needle used for IVD. Background Art

[0002] In the field of in vitro diagnostics, many in vitro diagnostic devices involve the puncture of the reagent seal during operation. The force of puncturing the seal is a key factor affecting the design of the steel needle anti-collision device. Therefore, in actual design, it is often necessary to test the mechanical properties of the steel needle during puncture. At present, manual detection methods are usually used in laboratories. During the test, a push-pull force gauge is used to determine the external force required for the steel needle to puncture the seal and the withdrawal force required to pull the steel needle out of the reagent bottle. This detection method is greatly affected by human factors, and the puncture depth cannot be guaranteed. The test results have large errors and require multiple tests, resulting in low detection efficiency. In addition, the test is often carried out on diagnostic equipment, the equipment operating space is small, and the operation is extremely inconvenient, which further reduces the detection efficiency. Therefore, how to design a high-precision and high-efficiency mechanical detection tooling is crucial. Summary of the Invention

[0003] In view of this, the utility model proposes a steel needle adaptability detection tool for IVD.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The steel needle adaptation force detection tool for IVD described in the utility model includes a first mounting member arranged horizontally and a second mounting member arranged vertically, and also includes a monitoring unit, a positioning structure arranged on the first mounting member, and a lifting mechanism arranged on the second mounting member. The lifting member of the lifting mechanism is provided with a connecting member for fixing the steel needle, and the positioning structure has a clamping unit for clamping a reagent bottle and an adjustment unit for adjusting the position of the clamping unit;

[0006] The monitoring unit includes a controller and a pressure sensor for monitoring the puncture force of the steel needle. The signal output end of the pressure sensor and the puncture monitoring component is connected to the signal input end of the controller.

[0007] The beneficial effect is that the utility model uses a lifting mechanism to drive the steel needle up and down, thereby puncturing the sealing membrane, achieving automatic detection and improving detection efficiency. In addition, the speed or stroke can be used as a variable to examine the corresponding steel needle puncture force at different speeds or strokes, providing data support for the development of in vitro diagnostic equipment.

[0008] Preferably, the adjustment unit is an XY slide having a sliding seat. The clamping unit includes a fixed clamping block and a movable clamping block disposed on the sliding seat. The clamping surfaces of the fixed clamping block and the movable clamping block each have an arc-shaped groove. The movable clamping block is provided with an adjustment screw, and the sliding seat is provided with a limit seat that cooperates with the adjustment screw. The beneficial effect is that the present invention utilizes the XY slide to adjust the position of the sliding seat, thereby adjusting the actual bottle position, ensuring that the reagent bottle is directly below the steel needle.

[0009] More preferably, the adjustment unit is an XY manual slide or an XY servo slide.

[0010] Preferably, the power source of the lifting mechanism is any one of a synchronous belt drive mechanism, a screw drive mechanism, a cylinder, a hydraulic cylinder or an electric push rod, and the lifting member is a lifting seat arranged at the power output end of the power source, which uses the power source to drive the lifting seat to rise and fall, thereby realizing the lifting and lowering of the steel needle.

[0011] Preferably, the lifting member is connected to the second mounting member through a guide pair, and the guide pair is a slide rail and slider pair or a shaft guide pair; wherein, the slide rail and slider pair includes a slide rail fixed on the second mounting member and a slider fixed on the lifting member, and the slider is slidably clamped on the slide rail.

[0012] Preferably, the upper portion of the second mounting member is used to monitor an origin sensor of the lifting member, and a signal output terminal of the origin sensor is connected to a signal input terminal of the controller. More preferably, the origin sensor is a photoelectric switch, and a trigger plate for triggering the origin sensor is provided on the lifting member.

[0013] The monitoring unit also includes a puncture monitoring component for monitoring the compatibility between the adapter and the consumables. The signal output terminal of the puncture monitoring component is connected to the signal input terminal of the controller. The utility model uses the puncture monitoring component to monitor the descending position of the steel needle, ensuring the puncture effect of the steel needle and thus reducing errors.

[0014] Preferably, the puncture monitoring component is a displacement sensor provided on the second mounting component; the pressure sensor is installed between the connecting component and the lifting component or between the positioning component and the first mounting component.

[0015] Compared to existing technologies, this new method standardizes needle penetration testing. Using a lifting mechanism to raise and lower the needle, the system maintains a consistent puncture depth for each needle, standardizing the penetration depth for the same needle model and improving test accuracy and efficiency. This new method also allows for examining the effects of different speeds or travels on the needle's penetration force, providing data support for the development of in vitro diagnostic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a schematic diagram of the positioning structure of the utility model.

[0018] Figure 3 This is a circuit principle block diagram of the utility model. DETAILED DESCRIPTION

[0019] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0020] It should be noted that, in the description of the present utility model, relational terms such as "first" and "second" are merely 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.

[0021] In the description of this utility model, unless otherwise specified or limited, the terms "connected" and "connection" that may appear should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integral connection; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium, or it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood based on specific circumstances.

[0022] like Figure 1-3 As shown, the steel needle adaptation mechanical testing tool for IVD described in the present invention includes an electric control box 1, a first mounting member (i.e., a first mounting plate 2), a second mounting member, a monitoring unit, a positioning structure provided on the first mounting plate 2, and a lifting mechanism provided on the second mounting member, wherein the lifting mechanism is located above the positioning structure; during actual installation, the first mounting plate 2 is horizontally installed on the top of the electric control box 1 to save space;

[0023] The second mounting member is a second mounting plate 3 whose bottom is fixed to the first mounting plate 2 (of course, the second mounting member can also be replaced by a column and a plate fixed to the column). The lifting mechanism includes a power source provided on the upper portion of the second mounting plate 3 and a lifting member (i.e., a lifting seat 4) driven by the power source. A connecting member (i.e., a connecting block 5) for fixing the steel needle F1 is provided below the lifting seat 4. The upper portion of the steel needle F1 is fixed to the connecting block 5.

[0024] The positioning structure includes a clamping unit for clamping the reagent bottle F2 and an adjusting unit 6 for adjusting the position of the clamping unit. During the test, the adjusting unit 6 is used to adjust the position of the clamping unit, and the clamping unit is used to clamp the reagent bottle F2 so that the sealing film of the reagent bottle F2 and the steel needle F1 above it correspond to each other vertically.

[0025] The monitoring unit includes a controller and a pressure sensor 7 for monitoring the puncture force of the steel needle F1. The signal output end of the pressure sensor 7 and the puncture monitoring component is connected to the signal input end of the controller. The control output end of the controller is connected to the control input end of the power source. The controller controls the working condition of the power source. The pressure sensor 7 transmits the pressure signal to the controller, thereby determining the puncture force of the steel needle F1.

[0026] During testing, the steel needle F1 is fixed to the connecting block 5, the reagent bottle F2 is clamped by the clamping unit, and the position of the reagent bottle F2 is adjusted using the adjustment unit 6 so that the steel needle F1 and the reagent bottle F2 correspond to each other up and down; first, the descending stroke of the steel needle F1 is adjusted and determined, and the power source is used to drive the steel needle F1 to descend. During the descent, the steel needle F1 punctures the sealing film on the reagent bottle F2; the pressure sensor 7 monitors the pressure signal in real time during this process and transmits it to the controller, which converts the pressure signal into a pressure value. The maximum pressure during this process is the maximum force required for the steel needle F1 to puncture. The utility model can also determine the puncture force under different strokes and speeds by changing the movement stroke and descent speed of the steel needle F1, providing a research and development basis for in vitro diagnostic instruments.

[0027] Combine Figure 1 As can be seen, the power source of the present invention is a screw drive mechanism, which includes a stepper motor 8, a screw 9 driven by the stepper motor 8, and a nut seat threadedly connected to the screw 9. The lifting base 4 is fixed to the nut seat, and the stepper motor 8 is fixed to the upper part of the second mounting plate 3 via the motor seat. Of course, in actual installation, the power source can also adopt other linear power sources such as a synchronous belt drive mechanism, a cylinder, a hydraulic cylinder, or an electric push rod.

[0028] Combine Figure 1 As can be seen, the lifting member is connected to the second mounting plate 3 via a guide pair. This guide pair is a rail-slider pair, comprising a rail 10 fixed to the second mounting plate 3 and a slider 11 fixed to the bottom of the lifting base 4. The slider 11 is slidably mounted on the rail 10, effectively preventing the lifting base 4 from twisting during the lifting process and ensuring the lifting base's motion accuracy. Of course, in actual installation, the guide pair can also be a column guide pair, with a guide column mounted on the second mounting plate 3 and a guide sleeve that cooperates with the guide column mounted on the lifting base 4.

[0029] Combine Figure 1-2It can be seen that the adjustment unit 6 is an XY manual slide (of course, it can also be an XY servo slide). The adjustment unit 6 has a sliding seat. The clamping unit includes a fixed clamping block 12 and a movable clamping block 13 arranged on the sliding seat. The clamping surfaces of the fixed clamping block 12 and the movable clamping block 13 both have arc-shaped grooves for clamping the reagent bottle F2; an adjusting screw 14 is provided on the movable clamping block 13, and the sliding seat is provided with a limit seat 15 that cooperates with the adjusting screw 14. During operation, the position of the movable clamping block 13 is adjusted by rotating the adjusting screw 14 to realize the opening and closing of the movable clamping block 13 and the fixed clamping block 12 to meet the requirements of taking, placing and fixing the reagent bottle F2; the adjustment unit 6 can adjust the position of the sliding seat, thereby realizing the adjustment of the position of the reagent bottle F2, ensuring that the reagent bottle F2 and the steel needle F1 are concentric.

[0030] During actual installation, the pressure sensor 7 is installed between the lifting seat 4 and the connecting block 5. Of course, the pressure sensor 7 can also be installed on the sliding seat between the fixed clamping block 12 and the movable clamping block 13, that is, the pressure sensor 7 is installed at the bottom of the reagent bottle F2.

[0031] The monitoring unit of the present invention also includes a puncture monitoring element, which can be a displacement sensor 16 mounted on the second mounting plate. The puncture monitoring element is used to monitor the descent stroke of the steel needle F1, thereby ensuring the puncture effect, reducing errors, improving the accuracy and reliability of the test results, and improving the detection efficiency. Of course, the puncture monitoring element can also be an encoder, which uses the encoder to detect the position signal of the stepper motor 8 to determine the descent stroke of the steel needle F1.

[0032] Combine Figure 1 As can be seen, an origin sensor 17 is mounted on the upper portion of the second mounting plate 3. This origin sensor 17 is preferably a photoelectric switch. A trigger plate 18 is provided on the lift base 4 for activating the photoelectric switch. The signal output of the origin sensor 17 is connected to the signal input of the controller. When the trigger plate 18 moves into the recess of the photoelectric switch, the photoelectric switch is triggered, indicating that the lift base 4 is at its origin position, enabling precise control of the puncture of the steel needle F1.

[0033] During the inspection, the steel needle F1 is installed on the connecting block 5, the adjusting screw 14 is pulled outward, the reagent bottle F2 is placed between the movable clamping block 13 and the fixed clamping block 12, and then the adjusting screw 14 is pushed inward to make the movable clamping block 13 move toward the fixed clamping block 12, thereby clamping the reagent bottle F2; the position of the sliding seat is adjusted so that the reagent bottle F2 and the steel needle F1 above are concentric; the stepping motor 8 is started, the lifting seat 4 and the steel needle F1 are reset to the origin position, and the running stroke and running speed of the lifting seat 4 are determined (it can be accelerated, uniform or decelerated, or a combination of the three). The stepping motor 8 drives the lifting seat 4 and the steel needle F1 to move downward. During this process, the displacement sensor 16 monitors the descending stroke, and the pressure sensor 7 detects the puncture pressure signal and transmits it to the controller. The controller determines the maximum pressure to puncture the sealing film. When the descending stroke reaches the set value, the steel needle F1 stops descending, and the inspection is completed.

[0034] Of course, during actual testing, the present invention can also provide data support for the research and development of in vitro diagnostic equipment by changing the descending stroke and descending speed of the steel needle F1 and affecting the puncture force of the steel needle F1.

[0035] It should be noted that the controller in this embodiment can be a general-purpose processor, a dedicated processor, a conventional processor, a digital signal processor (DSP), multiple microprocessors, one or more microprocessors associated with a DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), a state machine, etc. It can also be a programmable logic controller or an industrial computer. Furthermore, the controller can also be equipped with a wireless communication module to connect to a remote terminal, receive control commands from the remote terminal, and provide feedback on parameters related to the real-time operating status.

[0036] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tool for testing the fit of an IVD needle, comprising a horizontally arranged first mounting member and a vertically arranged second mounting member, characterized in that: The apparatus further comprises a monitoring unit, a positioning structure provided on the first mounting member, and a lifting mechanism provided on the second mounting member, wherein the lifting member of the lifting mechanism is provided with a connecting member for fixing a steel needle, the positioning structure comprises a clamping unit for clamping a reagent bottle and an adjusting unit for adjusting the position of the clamping unit; The monitoring unit includes a controller and a pressure sensor for monitoring the puncture force of the steel needle. The signal output end of the pressure sensor and the puncture monitoring component is connected to the signal input end of the controller.

2. The tool for detecting the fit of a steel needle for IVD according to claim 1, characterized in that: The adjustment unit is an XY slide, which has a sliding seat. The clamping unit includes a fixed clamping block and a movable clamping block arranged on the sliding seat. The clamping surfaces of the fixed clamping block and the movable clamping block both have arc-shaped grooves; an adjusting screw is provided on the movable clamping block, and the sliding seat is provided with a limit seat that cooperates with the adjusting screw.

3. The tool for detecting the adaptability of a steel needle for IVD according to claim 2, characterized in that: The adjustment unit is an XY manual slide or an XY servo slide.

4. The tool for detecting the fit of a steel needle for IVD according to claim 1, characterized in that: The power source of the lifting mechanism is any one of a synchronous belt transmission mechanism, a screw transmission mechanism, a cylinder, a hydraulic cylinder or an electric push rod, and the lifting member is a lifting seat arranged at the power output end of the power source.

5. The tool for detecting the adaptability of a steel needle for IVD according to claim 1, characterized in that: The lifting member is connected to the second mounting member through a guide pair, and the guide pair is a slide rail and slider pair or a shaft guide pair; wherein, the slide rail and slider pair includes a slide rail fixed on the second mounting member and a slider fixed on the lifting member, and the slider is slidably clamped on the slide rail.

6. The tool for detecting the adaptability of a steel needle for IVD according to claim 1, characterized in that: The upper portion of the second mounting member is used to monitor the origin sensor of the lifting member, and the signal output end of the origin sensor is connected to the signal input end of the controller.

7. The tool for detecting the fit of a steel needle for IVD according to claim 6, characterized in that: The origin sensor is a photoelectric switch, and the lifting member is provided with a triggering piece for triggering the origin sensor.

8. The tool for detecting the adaptability of a steel needle for IVD according to claim 1, characterized in that: The monitoring unit further includes a puncture monitoring component for monitoring the compatibility between the adapter and the consumables, and a signal output end of the puncture monitoring component is connected to a signal input end of the controller.

9. The tool for detecting the adaptability of a steel needle for IVD according to claim 8, characterized in that: The puncture monitoring component is a displacement sensor arranged on the second mounting component; the pressure sensor is installed between the connecting component and the lifting component.

Images