Mechanical semi-automatic blood slide smearing device

Abstract

The utility model discloses a mechanical semi-automatic blood slide smearing device. Comprising a main shell, a kinetic energy storing and transmitting unit, a slide pushing driving mechanism connected with the output end of the kinetic energy storing and transmitting unit and used for achieving the front-back reciprocating slide pushing action, and bearing tables arranged on the two sides of the slide pushing driving mechanism and used for containing slides. The sheet pushing cutter discharging units are installed on the two sides of the output end of the sheet pushing driving mechanism and located above the bearing table, and the single-time sheet pushing controller is used for preventing the sheet pushing driving mechanism from performing continuous reciprocating sheet pushing action; by means of the spring part, the transmission clutch assembly and the ratchet wheel assembly, energy storage and release of mechanical energy are successfully achieved, and cost is reduced from the angle of semi-automatic design on the premise that the high-quality and high-efficiency piece pushing effect is reserved; besides, by additionally arranging a multi-angle cutter switching scheme, flexible switching of cutter pushing at different angles can be achieved only by manually rotating a rotary knob, and the reasonability and the standard of the scheme for pushing pieces with different blood medical characteristics are improved.

Description

Technical Field

[0001] The embodiments of this utility model belong to the technical field of blood smear preparation devices, and more specifically, relate to a mechanical semi-automatic blood smear preparation device. Background Technology

[0002] According to the recommendations of the "National Clinical Laboratory Operation Procedures," blood should be smeared onto a glass slide to prepare a tongue-shaped blood smear for clinical peripheral blood morphology examination. Furthermore, the current standard procedure for preparing blood smears is also applicable to the examination of Plasmodium and Babesia. Therefore, developing an auxiliary device for preparing blood smears is of great significance in order to achieve standardization, normalization, and efficiency in the preparation of these blood smears.

[0003] To achieve the above objectives, Chinese invention patent CN108204913A discloses a method and apparatus for determining the slide pushing speed. The method for determining the slide pushing speed includes the steps of: obtaining the hematocrit parameters of the blood sample to be tested; and determining the slide pushing speed for preparing the blood smear of the blood sample to be tested based on the hematocrit parameters. In this embodiment, the slide pushing speed determined based on the hematocrit parameters eliminates the need for complex detection mechanisms. Slide pushing based on this speed can better match the blood viscosity of the blood sample to be tested, facilitating the simple and convenient preparation of high-quality blood smears with appropriate thickness, uniform blood film distribution, and suitable density. Furthermore, Chinese invention patent CN114323866B provides a blood slide pushing machine with a simple slide feeding process, high efficiency, and simple structure, enabling continuous slide pushing. The blood slide applicator includes a slide carrier, a slide transmission device, and a slide clamping device. The slide transmission device moves laterally within the machine body, controlling the slide clamping device to clamp a slide from the slide carrier and tilt it for smearing. After smearing, the slide clamping device loads a new slide from the slide carrier for continuous slide loading and spreading. This invention can be applied in the field of medical devices.

[0004] The above-mentioned patented technologies have achieved efficient push-plate operation by designing special devices, but there are still the following technical problems and directions for improvement: (1) The above-mentioned technical solutions are all developed using the mechatronics design concept. Although they can achieve high-quality and high-efficiency push-plate operation, their production costs are high, which leads most institutions to give up using them due to their high prices; (2) From the perspective of semi-automatic design, cost reduction should be achieved while maintaining the high-quality and high-efficiency push-plate effect. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a mechanical semi-automatic blood smear device. By utilizing a spring component, a transmission clutch assembly, and a ratchet assembly, it successfully achieves the storage and release of mechanical energy. From a semi-automatic design perspective, it reduces costs while maintaining high-quality and high-efficiency smear pushing effects. Furthermore, by adding a multi-angle blade switching scheme, different angle blades can be flexibly switched by simply turning a knob, improving the rationality and standardization of smear pushing schemes for different blood medical characteristics.

[0006] To achieve the above objectives, a mechanical semi-automatic blood smear preparation device is characterized by comprising:

[0007] The main housing, a kinetic energy storage and generation unit installed inside the main housing for storing and releasing mechanical energy, a slide pusher mechanism connected to the output end of the kinetic energy storage and generation unit to realize the back-to-back reciprocating slide pusher action, a support platform on both sides of the slide pusher mechanism for placing glass slides, a slide pusher blade unit installed on both sides of the output end of the slide pusher mechanism and located above the support platform, and a single slide pusher controller for preventing the slide pusher mechanism from performing continuous reciprocating slide pusher action.

[0008] The front side of the support platform is provided with a clamping clip for clamping glass slides;

[0009] The kinetic energy storage unit includes a manual crank located outside the side wall of the main housing, a drive shaft coaxially and indirectly connected to the central shaft of the manual crank and located inside the main housing, a drive clutch assembly located between the drive shaft and the central shaft of the manual crank for opening and closing to control the coaxial rotation of the two, and an energy storage spring wound around the surface of the drive shaft.

[0010] In the energy storage state, by manually rotating the hand crank, with the transmission clutch assembly closed, energy is transferred to the energy storage spring on the surface of the transmission shaft. In the non-energy storage state, the transmission clutch assembly is opened, and the energy storage spring outputs kinetic energy in the reverse direction to the transmission shaft, which is then transmitted to the pusher drive mechanism. This enables the pusher unit to perform a reciprocating pusher motion. Under the action of the single pusher controller, the energy storage spring energy is prevented from being continuously released, so that the pusher unit outputs energy with one reciprocating pusher motion as the motion unit.

[0011] Preferably, the transmission clutch assembly includes:

[0012] A first shaft segment coaxially fixedly connected to the center shaft of the manual crank, a second shaft segment coaxially fixedly connected to the front end of the first shaft segment, a sliding hole opened on the end face of the transmission shaft and slidably connected to the second shaft segment, an annular groove opened on the side of the second shaft segment, a limiting sliding block fixedly disposed on the front edge of the sliding hole and slidably connected to the annular groove, and a clutch chuck and a clutch slot respectively opened on the inner side of the sliding hole and the front end face of the second shaft segment;

[0013] In the energy storage state, push the left hand crank to engage the clutch chuck with the clutch slot, achieving a locked synchronous rotation state between the first and second shaft segments. In the non-energy storage state, pull the right hand crank to disengage the clutch chuck from the clutch slot, achieving an independent asynchronous rotation state between the first and second shaft segments.

[0014] Preferably, the pusher drive mechanism includes:

[0015] A worm gear coaxially connected to the middle position of the drive shaft via a ratchet assembly, a worm wheel meshing with the worm gear, a drive spindle fixedly coaxially connected to the center of the worm wheel, a reciprocating groove on the surface of the drive spindle, a reciprocating sliding block slidably connected to the drive spindle, a protrusion fixed to the reciprocating sliding block and slidably connected to the reciprocating groove, an intermediate connecting block on the upper surface of the reciprocating sliding block, and side support rods on both sides of the intermediate connecting block; the pusher blade delivery unit is fixed to both ends of the side support rods.

[0016] The ratchet assembly ensures that when the drive shaft rotates forward to store energy, the worm gear does not rotate synchronously with the drive shaft; when the drive shaft rotates in reverse to release energy, the worm gear rotates synchronously with the drive shaft.

[0017] Preferably, the pusher blade unit includes:

[0018] A box body fixed to both ends of the side support rod, a rotating cylinder provided on the box body, protrusions arranged in a circumferential array on the surface of the rotating cylinder, and a blade body fixed to the protrusions at different tilt angles;

[0019] The box has a sliding groove on its inner wall, a push block that is slidably connected to the sliding groove, a first push spring in the sliding groove, and a groove on the surface of the rotating cylinder that is clamped to the push block.

[0020] Preferably, the single-push controller includes:

[0021] A base block fixed to the main housing, a side support block provided on the upper surface of the base block, a rocker arm that is rotatably connected to the side support block via a hinge shaft, a clip provided at the front end of the rocker arm, and a second push spring provided on the upper surface of the base block and below the tail end of the rocker arm;

[0022] The second push spring pushes the tail of the rocker arm, keeping the chuck facing downwards in normal operation. After a single push action is completed, the side support rod returns towards the chuck and, under the push of the return action, automatically enters the chuck and is locked in place.

[0023] Preferably, the front end of the card head is configured with a chamfered shape to facilitate being pushed and lifted.

[0024] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0025] (1) The mechanical semi-automatic blood smear device of this utility model successfully realizes the storage and release of mechanical energy by means of the spring component, the transmission clutch component and the ratchet component. From the perspective of semi-automatic design, it achieves cost reduction while maintaining high quality and high efficiency of smear pushing effect.

[0026] (2) The mechanical semi-automatic blood smear device of this utility model, by adding a multi-angle blade switching scheme, can realize the flexible switching of different angle blades by simply turning the knob, which improves the rationality and standardization of the smearing scheme for different blood medical characteristics. Attached Figure Description

[0027] Figure 1 This is a top view of the internal structure of a mechanical semi-automatic blood smear device according to an embodiment of the present invention;

[0028] Figure 2 This is a side view of the drive spindle of a mechanical semi-automatic blood smear device according to an embodiment of the present invention;

[0029] Figure 3 This is a side view of the pusher and blade unit of a mechanical semi-automatic blood smear device according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of a single-slide pusher controller for a mechanical semi-automatic blood smear device according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the transmission clutch assembly of a mechanical semi-automatic blood smear device according to an embodiment of the present invention.

[0032] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-main housing, 2-kinetic energy storage unit, 201-manual crank, 202-drive shaft, 203-energy storage spring, 210-drive clutch assembly, 211-first shaft segment, 212-second shaft segment, 213-annular groove, 214-sliding hole, 215-limiting sliding block, 216-clutch chuck, 3-push plate drive mechanism, 301-ratchet assembly, 302-worm gear, 303-worm wheel, 304-drive spindle, 305 - Reciprocating slide groove, 306- Reciprocating sliding block, 307- Intermediate connecting block, 308- Side support rod, 4- Glass slide assembly, 401- Glass slide, 402- Slide clamp, 5- Slide pusher unit, 500- Box body, 501- Rotary cylinder, 502- Protrusion, 503- Blade body, 511- Sliding groove, 512- First push spring, 513- Push block, 514- Groove, 6- Single push controller, 601- Base block, 602- Side support block, 603- Rocker arm, 604- Clamp, 605- Second push spring. Detailed Implementation

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figures 1-5 As shown in this embodiment of the invention, the mechanical semi-automatic blood smear device includes:

[0038] The main housing 1; a kinetic energy storage and generation unit 2 installed inside the main housing for storing and releasing mechanical energy; a pusher drive mechanism 3 connected to the output end of the kinetic energy storage and generation unit 2 to realize the back-to-back reciprocating pusher action; a support platform on both sides of the pusher drive mechanism 3 for placing glass slides 401; a pusher blade unit 5 installed on both sides of the output end of the pusher drive mechanism 3 and located above the support platform; and a single pusher controller 6 for preventing the pusher drive mechanism 3 from performing continuous reciprocating pusher action.

[0039] The front side of the support platform is provided with a clamping clip 402 for clamping the glass slide 401;

[0040] The kinetic energy storage and generation unit 2 includes a manual crank 201 located outside the side wall of the main housing 1, a transmission shaft 202 coaxially and indirectly connected to the central rotating shaft of the manual crank 201 and located inside the main housing 1, a transmission clutch assembly 210 located between the transmission shaft 202 and the central rotating shaft of the manual crank 201 for opening and closing to control the coaxial rotation state of the two, and an energy storage spring 203 wound around the surface of the transmission shaft 202.

[0041] In the energy storage state, by manually rotating the hand crank, with the transmission clutch assembly 210 closed, energy is transferred to the energy storage spring 203 on the surface of the transmission shaft 202. In the non-energy storage state, the transmission clutch assembly 210 is disengaged, and the energy storage spring 203 outputs kinetic energy in the reverse direction to the transmission shaft 202, which is then transferred to the pusher drive mechanism 3 to realize the pusher blade unit 5 to perform a back-and-forth reciprocating pusher motion. Under the action of the single pusher controller, the energy of the energy storage spring 203 is prevented from being continuously released, so that the pusher blade unit 5 outputs a single reciprocating pusher motion as the motion unit.

[0042] like Figure 1 and Figure 5 As shown in this embodiment of the present invention, the transmission clutch assembly 210 includes:

[0043] The first shaft segment 211 is coaxially fixedly connected to the central shaft of the manual crank 201; the second shaft segment 212 is coaxially fixedly connected to the front end of the first shaft segment 211; the sliding hole 214 is opened on the end face of the transmission shaft 202 and is slidably connected to the second shaft segment 212; the annular groove 213 is opened on the side of the second shaft segment 212; the limiting sliding block 215 is fixedly set on the front edge of the sliding hole 214 and is slidably connected to the annular groove 213; the clutch jack 216 and the clutch slot are respectively opened on the inner side of the sliding hole 214 and the front end face of the second shaft segment.

[0044] In the energy storage state, push the left hand crank 201 to engage the clutch clasp 216 with the clutch slot, thereby locking the first shaft segment 211 and the second shaft segment 212 into a synchronous rotation state. In the non-energy storage state, pull the right hand crank 201 to disengage the clutch clasp 216 from the clutch slot, thereby enabling the first shaft segment 211 and the second shaft segment 212 to rotate independently and asynchronously.

[0045] like Figure 1 As shown in this embodiment of the invention, the pusher drive mechanism 3 includes:

[0046] A worm gear 302, coaxially connected to the transmission shaft 202 via a ratchet assembly 301, a worm wheel 303 meshing with the worm gear 302, a drive spindle 304 coaxially fixedly connected to the center of the worm wheel 303, a reciprocating groove 305 on the surface of the drive spindle 304, a reciprocating sliding block 306 slidably connected to the drive spindle 304, a protrusion fixed to the reciprocating sliding block 306 and slidably connected to the reciprocating groove 305, an intermediate connecting block 307 on the upper surface of the reciprocating sliding block 306, and side support rods 308 on both sides of the intermediate connecting block 307; the pusher blade unit 5 is fixed to both ends of the side support rods 308.

[0047] The ratchet assembly 301 ensures that when the drive shaft 202 rotates forward to store energy, the worm gear 302 does not rotate synchronously with the drive shaft 202, and when the drive shaft 202 rotates in reverse to release energy, the worm gear 302 rotates synchronously with the drive shaft 202.

[0048] like Figure 1 and Figure 3 As shown, in this embodiment of the present invention, the pusher blade delivery unit 5 includes:

[0049] The box body 500 is fixed to both ends of the side support rod 308, the rotating cylinder 501 is provided on the box body 500, the protrusions 502 are arranged in a circular array on the surface of the rotating cylinder 501, and the blade body 503 is fixed to the protrusions 502 at different tilt angles;

[0050] The box 500 has a sliding groove 511 on its inner wall, a push block 513 that is slidably connected to the sliding groove 511, a first push spring 512 in the sliding groove 511, and a groove 514 that is formed on the surface of the rotating cylinder 501 and is clamped to the push block 513.

[0051] like Figure 1 and Figure 3 As shown, in this embodiment of the present invention, the single-push controller 6 includes:

[0052] The base block 601 is fixed to the main housing 1, the side support block 602 is provided on the upper surface of the base block 601, the rocker arm 603 is rotatably connected to the side support block 602 through a hinge shaft, the clip 604 is provided at the front end of the rocker arm 603, and the second push spring 605 is provided on the upper surface of the base block 601 and below the tail of the rocker arm 603;

[0053] The second push spring 605 pushes the tail of the rocker arm 603, so that the clamp 604 is normally facing downward. After a single push action is completed, the side support rod 308 returns to the clamp 604 and enters the clamp 604 by itself under the push of the return action and is clamped.

[0054] like Figure 3 As shown in this embodiment of the present invention, the front end of the card head 604 is configured with a chamfered shape to facilitate being pushed and lifted.

[0055] Based on the above technical solution, the support platform, i.e. the workstation, used to place the glass slide 401 can be one or more, to facilitate use in different application environments.

[0056] The working principle of this utility model is as follows: First, manually push the manual crank 201 forward to close the transmission clutch assembly. Then, rotate the manual crank 201 to store energy in the energy storage spring 203, completing the energy storage operation. Next, clamp the paddle with the blood droplet in it using the tablet clamp 402. According to the blood medical condition, rotate the knob in the tablet pushing and knife-ejecting unit 5 so that the corresponding inclined blade 503 faces downward, serving as the tool for pushing the tablet. Next, manually press the tail of the rocker arm 603 to disengage the side support rod 308 from the chuck limit. At this time, the spring energy is released in the reverse direction, driving the drive spindle 304 to rotate. Under the guidance of the reciprocating slide groove 305, the reciprocating slide block moves forward and backward to push the tablet. Then, the side support rod 308, in the returned state, is locked back into the chuck to prevent continuous reciprocating motion, thus ending the current tablet pushing process. Repeat the above operation to complete the next set of paddle pushing.

[0057] In this embodiment of the invention, by using a spring component, a transmission clutch assembly, and a ratchet assembly, the storage and release of mechanical energy are successfully achieved. From the perspective of semi-automatic design, cost reduction is achieved while maintaining high quality and high efficiency in pushing the wafers.

[0058] In addition, by adding a multi-angle blade switching scheme, different angle blades can be flexibly switched by simply turning the knob, which improves the rationality and standardization of the blade pushing scheme for different blood medical characteristics.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A mechanical semi-automatic blood film smearing device, characterized in that, It includes: The main shell (1), the kinetic energy storage and release unit (2) installed in the main shell for storing and releasing mechanical energy, the push piece driving mechanism (3) connected with the output end of the kinetic energy storage and release unit (2) and realizing the forward and backward reciprocating push piece action, the bearing table provided on both sides of the push piece driving mechanism (3) for placing the slide (401), the push piece cutting unit (5) installed on both sides of the output end of the push piece driving mechanism (3) and located above the bearing table, the single push piece controller (6) for preventing the push piece driving mechanism (3) from continuously reciprocating; The front side of the bearing table is provided with a slide pressing clamp (402) for clamping the slide (401); The kinetic energy storage and release unit (2) includes a manual rocker (201) provided outside the side wall of the main shell (1), a transmission shaft (202) indirectly connected with the center rotating shaft of the manual rocker (201) and provided in the main shell (1), a transmission clutch assembly (210) provided between the transmission shaft (202) and the center rotating shaft of the manual rocker (201) for opening and closing control of the coaxial rotating state of the two, and a storage spring (203) wound on the surface of the transmission shaft (202); In the energy storage state, the manual rocker is manually rotated, the energy is transmitted to the storage spring (203) on the surface of the transmission shaft (202) under the closed state of the transmission clutch assembly (210), in the non-energy storage state, the transmission clutch assembly (210) is controlled to be disconnected, the energy storage spring (203) reversely outputs kinetic energy to the transmission shaft (202), which is transmitted to the push piece driving mechanism (3) to realize the forward and backward reciprocating push piece movement of the push piece cutting unit (5), under the action of the single push piece controller, the energy of the energy storage spring (203) is prevented from being continuously released, and the push piece cutting unit (5) is output as a reciprocating push piece movement unit.

2. A mechanical semi-automatic blood film staining device according to claim 1, wherein, The transmission clutch assembly (210) includes: The first shaft segment (211) is coaxially fixedly connected with the center rotating shaft of the manual rocker (201), the second shaft segment (212) is coaxially fixedly connected with the front end of the first shaft segment (211), the sliding hole (214) is opened in the end face of the transmission shaft (202) and is in sliding connection with the second shaft segment (212), the annular sliding groove (213) is opened in the side face of the second shaft segment (212), the limiting sliding block (215) is fixedly arranged at the front edge of the sliding hole (214) and is in sliding connection with the annular sliding groove (213), the clutch clamping head (216) is oppositely arranged in the inner side face of the sliding hole (214) and the front end face of the second shaft segment, and the clutch clamping hole is arranged; In the energy storage state, the left push manual rocker (201) is used to make the clutch clamping head (216) and the clutch clamping hole clamped, so that the first shaft segment (211) and the second shaft segment (212) are locked in synchronous rotating state, in the non-energy storage state, the right pull manual rocker (201) is used to make the clutch clamping head (216) and the clutch clamping hole separated, so that the first shaft segment (211) and the second shaft segment (212) are independently in non-synchronous rotating state.

3. A mechanical semi-automatic blood film staining device according to claim 2, wherein, The push piece driving mechanism (3) includes: The worm (302) is coaxially connected to the middle position of the transmission shaft (202) through the ratchet assembly (301), the worm gear (303) is in meshing transmission with the worm (302), the driving main shaft (304) is fixedly connected with the center of the worm gear (303) in a coaxial manner, the reciprocating sliding groove (305) is arranged on the surface of the driving main shaft (304), the reciprocating sliding block (306) is in sliding connection with the driving main shaft (304), the protruding block is fixed to the reciprocating sliding block (306) and is in guiding sliding connection with the reciprocating sliding groove (305), the middle connecting block (307) is arranged on the upper surface of the reciprocating sliding block (306), and the side supporting rod (308) is arranged on both sides of the middle connecting block (307); the pusher cutting unit (5) is fixed to both ends of the side supporting rod (308). The worm (302) is not in synchronous rotation with the transmission shaft (202) when the transmission shaft (202) is in forward rotation energy storage through the ratchet assembly (301), and the worm (302) is in synchronous rotation with the transmission shaft (202) when the transmission shaft (202) is in reverse rotation energy release.

4. A mechanical semi-automatic blood film staining device according to claim 3, wherein, The pusher cutting unit (5) comprises: The box body (500) is fixed to both ends of the side supporting rod (308), the rotating drum (501) is arranged on the box body (500), the protruding blocks (502) are arranged in a circumferential array on the surface of the rotating drum (501), and the cutter bodies (503) are fixed to the protruding blocks (502) in different inclination states. The sliding groove (511) is arranged on the inner wall of the box body (500), the push block (513) is in sliding connection with the sliding groove (511), the first push spring (512) is arranged in the sliding groove (511), and the groove (514) is arranged on the surface of the rotating drum (501) and is matched with the push block (513) for clamping.

5. A mechanical semi-automatic blood film staining device according to claim 4, wherein, The single-push controller (6) comprises: The base block (601) is fixed to the main shell (1), the side supporting block (602) is arranged on the upper surface of the base block (601), the lever (603) is in rotating connection with the side supporting block (602) through a hinge shaft, the clamping head (604) is arranged at the front end of the lever (603), and the second push spring (605) is arranged below the tail of the lever (603) on the upper surface of the base block (601). The clamping head (604) is always kept in a downward direction under the action of the second push spring (605) pushing the tail of the lever (603), the side supporting rod (308) returns to the direction of the clamping head (604) after the single-push action is completed, and is clamped in the clamping head (604) by the returning action.

6. A mechanical semi-automatic blood film staining device according to claim 5, wherein, The front end of the clamping head (604) is provided in a chamfer type for being conveniently pushed and lifted.

Images