A smear device for testing

Abstract

This utility model relates to the field of smear technology, specifically to a smear device for testing, including a base, a stage, a glass slide placed on the stage near the front wall of the base, and a lifting arm connected between the middle and rear part of the stage and the base. The stage is rotatably connected to the top of the lifting arm. When dripping blood, the stage is controlled to be in a flat position; when smearing, the stage is controlled to rotate to an inclined position. An inclined rail is located above the stage and its rear end is fixed to the top of the base via a fixing bracket. The inclination angle of the inclined rail is consistent with the inclination angle of the stage during smearing. A slide is slidably mounted on the inclined rail and a clamp is fixed thereon. The clamp is used to hold a pusher slide. When the lifting arm moves the glass slide on the stage upward and contacts the pusher slide, an angle is formed between the pusher slide and the glass slide, and they remain in contact.

Description

Technical Field

[0001] This utility model relates to the field of smear technology, specifically to a smear device for testing. Background Technology

[0002] Blood smear preparation: After the blood is dropped onto the glass slide, the slide needs to be tilted. After tilting the slide, use a pusher (another glass slide or a special pusher) to quickly push the blood drop across the edge of the blood drop. Gravity and the pressure of the pusher can be used to spread the blood drop into a uniform tongue-shaped or wedge-shaped blood film.

[0003] Too large or too small an tilt angle will affect the slide pushing effect. The angle is usually 15°~30°. At the same time, in the preparation of blood smears, the tilt angle between the slide and the glass slide needs to be kept constant.

[0004] This solution provides a smear device for testing, which limits the tilt angle of the glass slide after blood is dropped on it, and tilts the glass slide as it approaches the pusher while forming a fixed angle with the pusher. Utility Model Content

[0005] (a) Technical issues

[0006] The present invention aims to at least solve the problem of adaptability to changes in the relative angle and position between the glass slide and the pusher.

[0007] (II) Technical Content

[0008] This solution provides a smear testing device, achieved through the following specific technical means: including...

[0009] The base is placed on a table to serve as storage space;

[0010] A stage for placing glass slides is provided, and a lifting arm is connected between the middle and rear part of the stage and the base box. The lifting arm is used to control the height change of the stage; at the same time, the stage is rotatably connected to the top of the lifting arm.

[0011] The tilting rail is located above the stage and its rear end is fixed to the top of the base box by a fixing bracket. The tilting angle of the tilting rail is consistent with the tilting angle of the stage when coating.

[0012] A slide is slidably mounted on an inclined rail and a clamp is fixed thereon, the clamp being used to hold the push plate.

[0013] Preferred technical solution 1: The lifting arm includes two sets of parallel connecting arms and a vertical frame whose top end is rotatably connected to the middle and rear part of the bottom side of the platform. One end of the connecting arm is hinged to the vertical frame, and the other end is hinged to the base box.

[0014] A push rod is connected between the bottom of the base and the middle of the bottommost set of connecting arms; the height of the vertical frame is controlled by the extension and retraction of the push rod.

[0015] Preferred technical solution 2: An arc-shaped frame is fixed to the bottom rear end of the platform, and the center of the arc-shaped frame coincides with the center axis of the horizontal axis. At the same time, a protrusion that can slide in the arc-shaped groove on the arc-shaped frame is fixed to the rear side of the vertical frame. A tension spring is also connected between the rear side of the vertical frame and the rear end of the platform. The tension of the tension spring makes the protrusion located at the top of the arc-shaped groove when no external force is applied, and the platform is in a flat state.

[0016] Preferred technical solution 3: A proximity switch is installed at the front end of the inclined rail, and the proximity switch is signal-connected to the support rod.

[0017] Preferred technical solution four: The bottom box can be used to store the processed glass slides.

[0018] Preferred technical solution five: The slide table and the inclined rail are connected by a damped sliding connection.

[0019] (III) Technical Effects

[0020] The above structure gives this solution the following advantages:

[0021] 1. It can switch between flat and tilted states of the platform. When flat, it is convenient to drip blood. If it is always tilted, it is easy to flow when the blood drop is large if it cannot be processed in time. If it is always flat, the pushing effect is insufficient.

[0022] 2. The coordination between the tilting rail and the tilting angle of the stage ensures that the angle and contact force between the slide pusher and the glass slide during the coating process remain constant. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0025] Figure 2 This is a diagram showing the condition of the smear in this scheme;

[0026] Figure 3 This is an exploded view of the inclined rail and platform of this scheme;

[0027] Figure 4 This is a cross-sectional view of the lifting arm in this design.

[0028] Among them, 1. base box, 2. lifting arm, 21. connecting arm, 22. vertical frame, 23. protruding rod one, 24. protrusion, 25. protruding rod two, 26. push rod, 3. platform, 31. horizontal axis, 32. blood drip point marker, 33. arc frame, 331. arc groove, 4. inclined rail, 41. slide table, 42. clamp, 5. glass slide, 6. push plate, 7. tension spring, 8. proximity switch. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4 The smear testing apparatus includes a base box 1, a platform 3, an inclined rail 4, and a slide 41, wherein:

[0031] The base 1 is placed on the table to provide overall support. The base 1 can be used to temporarily store the processed glass slides 5.

[0032] The stage 3 is located near the front wall of the base box 1 at its rear side, on which a glass slide 5 is placed. A lifting arm 2 is connected between the middle and rear part of the stage 3 and the base box 1. The lifting arm 2 is used to control the height of the stage 3. At the same time, the stage 3 is rotatably connected to the top of the lifting arm 2. When dripping blood, the stage 3 is controlled to be in a flat position. When smearing, the stage 3 is controlled to be rotated to an inclined position. The inclination angle is limited to 15°~30°, preferably 20°.

[0033] The tilting rail 4 is located above the stage 3 and its rear end is fixed to the top of the base box 1 by a fixing bracket. The tilting angle of the tilting rail 4 is the same as the tilting angle of the stage 3 when it is coated, which is also 20°. The slide 41 is slidably mounted on the tilting rail 4 and a clamp 42 is fixed on it. Preferably, it is an elastic clamp. The clamp 42 is used to hold the pusher 6 (such as another horizontally placed glass slide, the pusher 6 can be inserted into the clamp 42, and at this time the height and angle of the pusher 6 are fixed by the clamp 42). When the lifting arm 2 moves the glass slide 5 on the stage 3 upward and contacts the pusher 6, an angle is formed between the pusher 6 and the glass slide 5. Since the stage 3 is tilted and parallel to the tilting rail 4 at this time, as the pusher 6 is pushed to move on the glass slide 5, the angle between the pusher 6 and the glass slide 5 is kept constant.

[0034] In one set of embodiments

[0035] Please see Figure 2The lifting arm 2 includes two or more sets of connecting arms 21 (preferably two sets) and a vertical frame 22 rotatably connected to a horizontal shaft 31 fixed to the middle and rear of the bottom side of the platform 3. The horizontal shaft 31 is located at the top of the vertical frame 22. One end of the multiple sets of connecting arms 21 is hinged to the vertical frame 22 and distributed from top to bottom on the vertical frame 22. At the same time, the multiple sets of connecting arms 21 are parallel to each other, and the other end of the connecting arms 21 is hinged to the bottom box 1. The vertical frame 22, the connecting arms 21 and the bottom box 1 form a parallelogram.

[0036] A push rod 26 is connected between the bottom of the base 1 and the middle of the bottommost set of connecting arms 21. The bottom end of the push rod 26 housing is hinged to the support near the bottom of the base 1, and the top telescopic end of the push rod 26 is hinged to the middle of the bottommost set of connecting arms 21. The extension and retraction of the push rod 26 controls the height change of the vertical frame 22. The parallel structure of multiple sets of connecting arms 21 ensures that the vertical frame 22 will not tilt during height changes and can remain vertical. By preset the extension amount of the push rod 26, the upward movement height of the stage 3 can be controlled, thereby controlling the contact force between the glass slide 5 and the pusher 6.

[0037] A proximity switch 8 is installed at the front end of the tilting rail 4. The proximity switch 8 is used to detect the position of the slide 41. When the pusher 6 moves to the front end of the slide 5, the slide 41 approaches the proximity switch 8 and is detected by the signal. The proximity switch 8 is connected to the push rod 26. After the proximity switch 8 detects the signal, it feeds back to the push rod 26, and the push rod 26 retracts to control the stage 3 to move down and reset.

[0038] It is worth noting that the specific models of the push rod 26 and proximity switch 8 mentioned in this embodiment, as well as their matching power supply and control switch, can also be provided by the manufacturer. The circuits, electronic components and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and there is no need to elaborate further.

[0039] In one set of embodiments

[0040] Please see Figure 2 , Figure 4An arc-shaped frame 33 is fixed to the rear end of the bottom side of the platform 3, and the center of the arc-shaped frame 33 coincides with the central axis of the horizontal axis 31. At the same time, a protruding rod 23 at a high position and a protruding rod 25 at a low position are fixed to the rear side of the vertical frame 22. A protrusion 24 is fixed to the rear end of the protruding rod 23. The protrusion 24 slides in the arc groove 331 on the arc-shaped frame 33, and the angle of movement of the protrusion 24 on the arc-shaped frame 33 is the tilt angle of the platform 3. A tension spring 7 is connected between the rear end of the protruding rod 25 and the rear end of the platform 3. The tension spring 7 is located behind the protrusion 24. The tension of the tension spring 7 makes the protrusion 24 located at the top of the arc groove 331 when no external force is applied. At this time, the platform 3 is in a flat state. When it is necessary to tilt the platform 3, a downward pressure needs to be applied to the front section of the platform 3 located on the horizontal axis 31. When the protrusion 24 moves to the bottom end of the arc groove 331, the platform 3 tilts to the set maximum angle.

[0041] Before the stage 3 moves up and approaches the pusher 6, the operator presses down on the front end of the stage 3 with one hand to tilt the stage 3. When the slide 5 contacts the pusher 6, the operator can hold the handle formed on the slide 41 with the other hand and move it back and forth to drive the pusher 6 to move back and forth on the slide 5 (before the smear is completed, the slide 41 does not approach the proximity switch 8). When moving backward, the pusher 6 first approaches the blood droplet and spreads the blood droplet horizontally, and then moves forward to push the blood droplet away. At this time, the contact force between the pusher 6 and the slide 5 is consistent.

[0042] After the smear is prepared, activate the control switch of push rod 26 to retract push rod 26 and move stage 3 down to the initial position. Then you can release the pressure on stage 3 and remove the smear.

[0043] The slide table 41 and the inclined rail 4 are connected by a damped sliding connection. The frictional resistance between the two is greater than the sum of the weights of the slide table 41, the clamp 42 and the push plate 6, so that the slide table 41 can stop at will on the inclined rail 4.

[0044] In one set of embodiments

[0045] Please see Figure 3 Blood drop mark 32 is engraved on the top surface of the stage 3. After the slide 5 is placed on the stage 3, blood can be dropped onto the slide 5 at the corresponding blood drop mark 32.

[0046] The blood drop mark 32 is located on the front side of the vertical frame 22 to prevent blood from dripping behind the vertical frame 22 and affecting the force applied to push the tablet.

[0047] During use, this solution requires routine maintenance (such as disinfection) of each component according to the established maintenance plan to ensure its working condition.

[0048] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0049] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smear device for examination, characterized by: include The base (1) serves as a storage space; The stage (3) is located on the rear side near the front wall of the base (1) and is used to place glass slides (5). A lifting arm (2) is connected between the middle and rear part of the stage (3) and the base (1), and the stage (3) is rotatably connected to the top of the lifting arm (2). The tilting rail (4) is located above the stage (3) and its rear end is fixed to the top of the base box (1) by a fixing bracket. At the same time, the tilting angle of the tilting rail (4) is consistent with the tilting angle of the stage (3) when coating. The slide (41) is slidably mounted on the inclined rail (4) and a clamp (42) for holding the push plate (6) is fixed thereon.

2. A smear device for testing according to claim 1, characterized in that: The tilt angle of the platform (3) and the tilting rail (4) is between 15° and 30°.

3. A smear device for testing according to claim 1, characterized in that: The lifting arm (2) is connected to a vertical frame (22) on one side, and the lifting arm (2) can control the height change of the vertical frame (22); The platform (3) is rotatably connected to the top of the vertical frame (22) via a horizontal shaft (31) fixed to the bottom side of the middle and rear.

4. A smear device for testing according to claim 3, characterized in that: The platform (3) has an arc-shaped frame (33) at its bottom rear end, and the center of the arc-shaped frame (33) coincides with the horizontal axis (31). At the same time, a protrusion (24) is fixed on the rear side of the vertical frame (22). The protrusion (24) slides in the arc-shaped groove (331) on the arc-shaped frame (33). The angle of the arc-shaped groove (331) is consistent with the tilt angle of the inclined rail (4). A tension spring (7) is connected between the rear end of the second protrusion (25) fixed on the rear side of the vertical frame (22) and the rear end of the platform (3). The tension spring (7) is located on the rear side of the protrusion (24). The tension spring (7) is used to provide a force to pull the platform (3) to lie flat.

5. A smear device for testing according to claim 1, characterized in that: The slide (41) and the inclined rail (4) are connected by a damped sliding connection.

6. A smear device for testing according to claim 3, characterized in that: The lifting height of the lifting arm (2) is achieved by a push rod (26) that is hinged to the base (1).

7. The smear apparatus for testing according to claim 1, characterized in that: Blood drop mark (32) is engraved on the top surface of the stage (3).

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