A reagent strip automatic card feeding device

Abstract

The invention discloses an automatic reagent strip card feeding device. The device comprises a housing, a screw motor and a reagent strip rack. The device forms a chamber for storing the reagent strip rack by setting the housing, and the reagent strip can be filled until the reagent strip rack forms a clip structure and slides into the chamber. The reagent strip rack can be replaced as a whole, which effectively improves the efficiency of the test. The position of the reagent strip rack is fixed by the interaction between the magnet on the housing and the positioning block on the reagent rack. The housing is provided with a micro switch, which can detect whether the reagent strip rack is inserted. There is also an infrared detection module for calibrating whether the reagent strip is filled. The reagent strip rack of the device can conveniently add reagent strips, and the reagent strip rack can be pushed into the chamber. When the reagent strip in the reagent strip rack is used up, another reagent strip rack can be replaced and pushed into the chamber. The device also has an alarm prompt for insufficient remaining quantity and a prompt for no reagent strip in the reagent rack, which reminds the user to add reagent strips. The device also has a heating and heat preservation function, which is convenient for preheating and heat preservation of the reagent strip.

Description

[0001] The invention relates to the technical field of medical in vitro diagnosis, and in particular to an automatic reagent strip feeding device. Background Art

[0002] In vitro diagnostics, or IVD (In Vitro Diagnosis), refers to products and services that obtain clinical diagnostic information by testing human samples (blood, body fluids, tissues, etc.) outside the human body, and then judge diseases or body functions. In vitro diagnostic products are mainly composed of diagnostic equipment (instruments) and diagnostic reagents. The diagnostic reagents required for the diagnostic equipment can be pre-loaded into the reagent position of the reagent strip, so that multiple reagents required for a test sample can be added into the equipment through a reagent strip as a whole, meeting the requirements for single-person testing. In single-person devices that use the enzymatic chemiluminescence method of reagent strips, it is currently impossible to achieve modular replacement of multiple reagent strips, and unattended push of the reagent strips into the device one by one, and manual addition is cumbersome and error-prone. There is also the problem of time-consuming to restore refrigerated reagent strips to room temperature. Summary of the invention

[0003] The main purpose of the present invention is to provide an automatic reagent strip feeding device, wherein the reagent strip rack for loading the reagent strips is modular in the shape of a bullet clip, so that multiple reagent strips can be added simultaneously and used in sequence, and the refrigerated reagent strips can be preheated and kept warm before the test, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A reagent strip automatic card feeding device comprises a shell, a screw motor and a reagent strip rack, wherein both sides of the shell are fixedly connected with a heating cover plate by bolts, a control cabinet is arranged at one end of the shell, a triangular connecting plate is bolted at the lower end of the shell, a reagent strip rack is arranged on the inner side of the shell, a magnet, an infrared detection module and a micro switch are arranged at the other end of the shell, a sliding seat is fixedly connected at the lower end of the triangular connecting plate, a notch is arranged at the lower end of the triangular connecting plate, a blocking body is arranged at the upper end of the sliding seat, and a screw motor is fixedly connected to one side of the lower end of the sliding seat The output shaft of the screw motor is sleeved and fixed with a guide rail, one end of the screw motor is fixedly connected to a seat frame through a lining plate, one end of the guide rail is provided with a sliding tooth, one end of the seat frame is fixedly connected to a top seat, the upper end of the sliding tooth is rotatably connected with a linkage tooth, the upper end of the linkage tooth is provided with a push rod, one end of the reagent strip rack is provided with a positioning strip plate, a reagent strip is provided on the inner side of the reagent strip rack, a visual window is provided on one side of the reagent strip rack, a clamping rail is provided at the lower end of the reagent strip rack, and an insulation plate and a heating film are provided on the inner side of the heating cover plate.

[0006] Furthermore, the shell is slightly larger than the reagent strip rack and can completely accommodate the reagent strip rack. A retaining spring is provided at the lower end of one side of the shell, and the retaining spring limits the falling position of the reagent strip and facilitates the ejection of the push rod. The retaining spring prevents the reagent strip from falling vertically and causing a probe, and limits the reagent strip from entering the incubation tray without being pushed by the push rod. The two magnets distributed on the shell can be adsorbed with the two positioning blocks on the reagent strip rack, and the adsorption position is judged by a micro switch to fix the position of the reagent strip rack. The infrared detection module at its lower end calibrates whether there are still reagent strips on the reagent strip rack, and generates a blue signal representing normal and a red alarm signal representing the absence of reagent strips, which is used to monitor the number of reagent strips. The heating covers on both sides of the shell are provided with heating films and heat insulation plates, and the power-on heating is controlled by a control cabinet. The notch is hollowed out for barcode scanning, and a barcode scanning device can be attached to the outside to scan the barcode on the reagent strip and identify and read the information on the reagent strip.

[0007] Furthermore, the slide is a middle frame structure, with a groove at the upper end, a push rod that can slide on the groove, a driving groove at the lower end, and a blocking body closed at the upper end. The slide serves as the connecting driving part of the entire device, is fixed to the shell through a triangular connecting plate, and the lower end is fixed to the screw motor through bolts and other structures. One end of the slide and the shell have an opening to push out the reagent strip, and the second reagent strip falls into the groove again, waiting for the next push out.

[0008] Furthermore, the screw motor adopts a screw stepping motor, and the screw motor is rotated by the magnetic rotor core through the interaction with the pulse electromagnetic field generated by the stator. The screw motor drives the guide rail to rotate, so that the sliding teeth reciprocate on the guide rail, and the linkage teeth are forced to move synchronously to make the push rod reciprocate, thereby ejecting the test strip.

[0009] Furthermore, the sliding teeth and the guide rail form a roller screw pair, which converts the rotation speed of the screw motor into the movement of the sliding teeth, thereby serving as a power transmission mechanism for the push rod.

[0010] Furthermore, the push rod is a rectangular block structure, one end of the push rod is provided with a notch for fixing with the linkage tooth, the width of the push rod is consistent with the reagent strip, and the reagent strip can be pushed out from the reagent strip rack.

[0011] Furthermore, the heating film is a resistive heating film, which is preferably a PTC self-controlled electric heating film. The heating film heats the reagent strip, and a temperature sensor is provided to detect the temperature, thereby intermittently turning on to keep the reagent strip at a constant temperature.

[0012] Furthermore, the insulation board is a rectangular diaphragm, which is located on both sides of the heating cover plate and the heating film, and is used to isolate the temperature of the heating film from causing the heating cover plate to heat up to the risk of overheating. The insulation board is preferably an insulating glass wool board.

[0013] Furthermore, the reagent strip rack is a removable structure and can slide into the shell along the baffle through a rail. A positioning block is provided at the other end of the reagent strip rack. When sliding into the shell, it cooperates with the magnet in the shell so that the reagent strip rack can fit to the bottom of the shell, and the reagent strips fall on the bottom baffle and are stacked in sequence.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The device of the invention forms a chamber for storing reagent strips by setting a shell, and the reagent strips can be filled into the reagent strip rack to form a clip structure that slides into the chamber, and the reagent strip rack can be independently pushed in and out of the chamber to achieve overall replacement, which effectively improves the efficiency of the test;

[0016] 2. The device of the invention limits the position of the reagent strip rack in the chamber by setting the interaction between the magnet on the shell and the magnet on the reagent strip rack and the positioning block, and the infrared detection module on the shell is used to detect whether the reagent strip is loaded, thereby improving efficiency;

[0017] 3. The device of the invention forms a sliding drive by setting a screw motor in conjunction with a guide rail and a sliding gear, so that the push rod moves back and forth to eject the test strip;

[0018] 4. The device of the invention controls the temperature of the reagent strip to be constant by means of heating films arranged on both sides of the shell, which facilitates the implementation of subsequent test steps, and the heat insulation plate prevents heat from dissipating, locks in temperature, and prevents the outer wall from being overheated;

[0019] 5. The device of the invention can conveniently add reagent strips, can add in advance and in batches, has a heating and heat preservation function, is convenient for preheating and storing reagent strips, and has an alarm prompt for insufficient remaining quantity to remind you to add reagent strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the propulsion device of the present invention.

[0022] Figure 3 It is a schematic diagram of the reagent shell structure of the present invention.

[0023] Figure 4 Schematic diagram of the reagent strip rack structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the explosion of the reagent shell of the present invention.

[0025] Figure 6 It is a schematic diagram of the side structure of the reagent strip rack of the present invention.

[0026] Figure 7 This is a schematic diagram of the filling posture structure of the reagent strip rack of the present invention.

[0027] In the figure: 1. Shell; 3. Heating cover; 4. Control cabinet; 5. Triangular connecting plate; 6. Block body; 7. Sliding seat; 8. Screw motor; 9. Guide rail; 10. Lining plate; 11. Seat; 12. Sliding gear; 13. Top seat; 14. Linkage gear; 15. Push rod; 16. Reagent strip rack; 17. Positioning strip; 18. Reagent strip; 19. Visual window; 20. Magnet; 21. Infrared detection module; 22. Heating film; 23. Heat insulation board; 24. Notch; 25. Rail; 26. Retaining spring; 27. Positioning block; 28. Micro switch. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-7 As shown, a reagent strip automatic card feeding device comprises a shell 1, a screw motor 8 and a reagent strip rack 16, both sides of the shell 1 are fixedly connected with a heating cover plate 3 by bolts, one end of the shell 1 is provided with a control cabinet 4, the lower end of the shell 1 is bolted with a triangular connecting plate 5, the inner side of the shell 1 is provided with a reagent strip rack 16, the other end of the shell 1 is provided with a magnet 20, an infrared detection module 21 and a micro switch 28, the lower end of the triangular connecting plate 5 is fixedly connected with a slide seat 7, the lower end of the triangular connecting plate 5 has a notch 24, the upper end of the slide seat 7 is provided with a blocking body 6, the lower end of the slide seat 7 is fixedly connected with a screw motor 8, the screw The output shaft of the motor 8 is sleeved and fixed with a guide rail 9, one end of the screw motor 8 is fixedly connected to a seat frame 11 through a lining plate 10, one end of the guide rail 9 is provided with a sliding tooth 12, one end of the seat frame 11 is fixedly connected to a top seat 13, the upper end of the sliding tooth 12 is rotatably connected with a linkage tooth 14, the upper end of the linkage tooth 14 is provided with a push rod 15, one end of the reagent strip rack 16 is provided with a positioning strip plate 17, the inner side of the reagent strip rack 16 is provided with a reagent strip 18, one side of the reagent strip rack 16 is provided with a visual window 19, the lower end of the reagent strip rack 16 is provided with a clamping rail 25, and the inner side of the heating cover plate 3 is provided with a heat insulation plate 23 and a heating film 22.

[0030] The shell 1 is slightly larger than the reagent strip rack 16 and can completely accommodate the reagent strip rack 16. A retaining spring 26 is provided at the lower end of one side of the shell 1. The retaining spring 26 limits the falling position of the reagent strip 18 and facilitates the ejection of the push rod 15. The retaining spring 26 prevents the reagent strip 18 from falling vertically and causing a probe, and limits the reagent strip from entering the incubation tray without being pushed by the push rod 15. The two magnets 20 distributed on the shell 1 can be adsorbed with the two positioning blocks 27 on the reagent strip rack 16, and the adsorption position is judged by the micro switch 28, which is used to fix the position of the reagent strip rack 16. The infrared detection module 21 at the lower end thereof can be adjusted by calibrating the position of the reagent strip rack 16. Whether there is still a reagent strip 18, and a blue signal representing normal and a red alarm signal representing the absence of the reagent strip are generated to monitor the number of reagent strips 18. The heating cover plates 3 on both sides of the shell 1 are provided with heating films 22 and heat insulation plates 23. The power heating is controlled by the control cabinet 4. The slot 24 is hollowed out for barcode scanning. A scanning device can be attached to the outside to scan the barcode on the reagent strip 18 and identify and read the information of the reagent strip 18. The shell 1 plays a role in portable batch addition of the reagent strip 18, and can calibrate the adding position, give an early warning that the reagent strip is not loaded, and can continuously preheat the reagent strip 18 through the heating cover plate 3.

[0031] Among them, the slide 7 is a middle frame structure, with a groove at the upper end, a push rod 15 that can slide on the groove, a driving groove at the lower end, and a blocking body 6 to close the upper end. The slide 7 serves as the connecting driving part of the entire device, is fixed to the shell 1 through a triangular connecting plate 5, and the lower end is fixed to the screw motor 8 through bolts and other structures. One end of the slide 7 and the shell 1 have an opening to push out the reagent strip 18, and the second reagent strip 18 falls into the groove again, waiting for the next push, providing power conversion capability, converting the motor speed into reciprocating linear motion, thereby coordinating the extension and retraction of the push rod 15.

[0032] Among them, the screw motor 8 adopts a screw stepping motor, and the screw motor 8 is rotated by the magnetic rotor core through the interaction with the pulse electromagnetic field generated by the stator. The screw motor 8 will rotate to drive the guide rail 9 to rotate, so that the sliding teeth 12 of the guide rail 9 reciprocate, and the linkage teeth 14 are forced to move synchronously to make the push rod 15 reciprocate, thereby ejecting the reagent strip 18. The screw motor 8 can effectively generate a constant speed and output and convert it into the power for pushing out.

[0033] The sliding gear 12 and the guide rail 9 form a roller screw pair, which converts the rotation speed of the screw motor 8 into the movement of the sliding gear 12, thereby serving as a power transmission mechanism of the push rod 15 and a power conversion unit to convert the rotation into linear reciprocating movement.

[0034] The push rod 15 is a rectangular block structure, one end of which is provided with a notch for fixing with the linkage tooth 14. The width of the push rod 15 is consistent with the reagent strip 18, and the reagent strip 18 can be pushed out from the reagent strip rack 16. By setting the push rod 15, the reagent strip 18 can be effectively pushed out, and then retracted, waiting for the reagent strip 18 to fall, and then pushed out again, and so on.

[0035] Among them, the heating film 22 is a resistive heating film, which is preferably a PTC self-controlled electric heating film. The heating film 22 heats the reagent strip 18, and a temperature sensor is provided to detect the temperature, so as to intermittently turn on to keep the reagent strip 18 at a constant temperature. By setting the heating film 22, the reagent strip 18 can be continuously or intermittently controlled to be at the most suitable temperature, which is convenient for collection in subsequent steps.

[0036] Among them, the insulation board 23 is a rectangular diaphragm, which is located on both sides of the heating cover plate 3 and the heating film 22, and is used to isolate the temperature of the heating film 22 from causing the heating cover plate 3 to heat up to the risk of overheating. The insulation board 23 is preferably an insulating glass wool board to avoid heat volatilization and scalding the user.

[0037] Among them, the reagent strip rack 16 is a removable structure, which can be slid into the shell 1 along the baffle 6 through the rail 25. The other end of the reagent strip rack 16 is provided with a positioning block 27. When sliding into the shell 1, it cooperates with the magnet 20 in the shell 1 so that the reagent strip rack 16 can be attached to the bottom of the shell 1. The reagent strips 18 fall on the bottom baffle and are stacked in sequence. By replacing the reagent strip rack 16, batch addition of reagent strips 18 can be completed, and batch addition of reagent strips 18 can effectively improve efficiency.

[0038] It should be noted that the present invention is an automatic reagent strip feeding device.

[0039] Usage steps: the testing physician draws out the reagent strip rack 16 from the side end of the shell 1 along the card rail 25, fills the reagent strip 18, and then inserts the reagent strip rack 16 into the inner side of the shell 1 until the magnet 20 and the magnet 20 on the reagent strip rack 16 are attracted to each other, so that the reagent strip rack 16 is fixed in a suitable position, and the control cabinet 4 cooperates with the heating film 22 to continuously heat the reagent strip 18, and the infrared detection module 21 detects the reagent strip 18 and lights up the blue indicator light, and presses the button of the control cabinet 4, the screw motor 8 rotates, driving the guide rail 9 to rotate, the sliding gear 12 and the linkage gear 14 cooperate with the push rod 15 to make reciprocating motion on the slide seat 7, and the push rod 15 extends into the reagent strip rack 16 to push the reagent strip 18 out of the opening, and the barcode on the reagent strip 18 is scanned by the scanning device attached to the slot 24, and the corresponding information of the reagent strip 18 is identified or read. The device can improve the method of adding the reagent strip 18 to make it more convenient and quick, and the device is modularized, and installation and replacement are simpler.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A reagent strip automatic card feeding device, comprising a housing (1), a lead screw motor (8) and a reagent strip rack (16), characterized in that: The two sides of the shell (1) are fixedly connected with a heating cover plate (3) by bolts, a control cabinet (4) is arranged at one end of the shell (1), a triangular connecting plate (5) is bolted to the lower end of the shell (1), a reagent strip rack (16) is arranged on the inner side of the shell (1), and a magnet (20), an infrared detection module (21) and a micro switch (28) are arranged at the other end of the shell (1), a slide seat (7) is fixedly connected to the lower end of the triangular connecting plate (5), a notch (24) is provided at the lower end of the triangular connecting plate (5), a stopper (6) is provided at the upper end of the slide seat (7), a screw motor (8) is fixedly connected to one side of the lower end of the slide seat (7), and the output shaft of the screw motor (8) is sleeved and fixed with a guide rail (9), so that One end of the screw motor (8) is fixedly connected to a seat frame (11) via a lining plate (10); one end of the guide rail (9) is provided with a sliding tooth (12); one end of the seat frame (11) is fixedly connected to a top seat (13); the upper end of the sliding tooth (12) is rotatably connected to a linkage tooth (14); the upper end of the linkage tooth (14) is provided with a push rod (15); one end of the reagent strip rack (16) is provided with a positioning strip plate (17); a reagent strip (18) is provided on the inner side of the reagent strip rack (16); a visual window (19) is provided on one side of the reagent strip rack (16); a clamping rail (25) is provided at the lower end of the reagent strip rack (16); and a heat insulation plate (23) and a heating film (22) are provided on the inner side of the heating cover plate (3); The slide (7) is a middle frame structure, with a groove at its upper end, a push rod (15) capable of sliding on the groove, a driving groove at its lower end, and the upper end is closed by a blocking body (6). The slide (7) serves as a connecting and driving part of the entire device, and is fixed to the housing (1) through a triangular connecting plate (5). The lower end is fixed to the screw motor (8) through a bolt structure. One end of the slide (7) is opened with the housing (1), and the reagent strip (18) is pushed out by the push rod (15). The second reagent strip (18) falls into the groove again and waits for the next push-out. The screw motor (8) is a screw stepping motor. The screw motor (8) is rotated by the interaction between the magnetic rotor core and the pulse electromagnetic field generated by the stator. The screw motor (8) drives the guide rail (9) to rotate, so that the sliding teeth (12) reciprocate on the guide rail (9). The linkage teeth (14) are forced to move synchronously, so that the push rod (15) reciprocates, thereby ejecting the test strip (18).

2. The automatic reagent strip feeding device according to claim 1, characterized in that: The shell (1) is slightly larger than the reagent strip rack (16) and can completely accommodate the reagent strip rack (16). A retaining spring (26) is provided at the lower end of one side of the shell (1). The retaining spring (26) limits the falling position of the reagent strip (18) and facilitates the ejection of the push rod (15). The retaining spring (26) prevents the reagent strip (18) from sticking out of the shell after vertically falling, thereby limiting the reagent strip from entering the incubation tray without being pushed by the push rod (15). The two magnets (20) distributed on the shell (1) can be adsorbed with the two positioning blocks (27) on the reagent strip rack (16), and the adsorption position is judged by the micro switch (28). The infrared detection module (21) at the lower end thereof is used to monitor the number of reagent strips (18) by calibrating whether there are still reagent strips (18) on the reagent strip rack (16) and generating a blue signal representing a normal state and a red alarm signal representing an empty reagent strip. The heating cover plates (3) on both sides of the housing (1) are provided with heating films (22) and heat insulation plates (23). The power supply and heating are controlled by the control cabinet (4). The notch (24) is hollowed out for barcode scanning. A barcode scanning device can be attached to the outer side to scan the barcode on the reagent strip (18) and identify and read the information of the reagent strip (18).

3. The automatic reagent strip feeding device according to claim 1, characterized in that: The sliding teeth (12) and the guide rail (9) form a roller screw pair, which converts the rotation speed of the screw motor (8) into the movement of the sliding teeth (12), thereby serving as a power transmission mechanism for the push rod (15).

4. The automatic reagent strip feeding device according to claim 1, characterized in that: The push rod (15) is a rectangular block structure. A notch is provided at one end of the push rod (15) for fixing with the linkage tooth (14). The width of the push rod (15) is consistent with that of the reagent strip (18), and the reagent strip (18) can be pushed out of the reagent strip rack (16).

5. The automatic reagent strip feeding device according to claim 1, characterized in that: The heating film (22) is a resistive heating film, and the heating film (22) heats the reagent strip (18). A temperature sensor is provided to detect the temperature, thereby intermittently turning on the heating film to keep the reagent strip (18) at a constant temperature.

6. The automatic reagent strip feeding device according to claim 1, characterized in that: The heat insulation plate (23) is a rectangular diaphragm, which is located on both sides of the heating cover plate (3) and the heating film (22) and is used to prevent the temperature of the heating film (22) from causing the heating cover plate (3) to heat up to the point of overheating.

7. The automatic reagent strip feeding device according to claim 1, characterized in that: The reagent strip rack (16) is a removable structure and can be slid into the housing (1) along the baffle (6) via a rail (25). A positioning block (27) is provided at the other end of the reagent strip rack (16). When sliding into the housing (1), the positioning block cooperates with the magnet (20) in the housing (1) so that the reagent strip rack (16) can be attached to the bottom of the housing (1). The reagent strips (18) fall on the bottom baffle and are stacked in sequence.

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