A pathological tissue sectioning device

Abstract

The utility model relates to the technical field of slicing device, specifically disclose a pathological tissue slice device, including the slicer body, the fixedly connected with the bottom plate on the slicer body, the fixedly connected with two slide rails on the bottom plate, set up the movable moving platform of slidable on two slide rails, install the blade switching mechanism for switching rough cutting blade or fine cutting blade on the moving platform, solved the technical problem that the existing pathological tissue slice device needs manual switching blade in the process of adopting durable blade to carry out rough cutting modification and switching sharp blade to carry out fine cutting.

Description

Technical Field

[0001] This utility model relates to the field of slicing devices, and specifically discloses a pathological tissue slicing device. Background Technology

[0002] Pathological tissue sections are an important tool in medical diagnosis for observing the microstructure of tissues. They are widely used in tumor detection, inflammation assessment, and disease analysis. Existing devices mainly include the microtome body, sample clamping assembly, blade module, and adjustment mechanism, enabling thin-layer cutting of biological tissue samples. Common devices include rotary, sliding, and automated cryostat microtome, suitable for different sample processing needs. In practice, a durable blade is often used for rough cutting and trimming, followed by a sharper blade for fine cutting to obtain thinner and more complete tissue sections, meeting the requirements for high-quality staining and microscopic observation. With technological advancements, microtome devices have continuously improved in terms of thickness control, stability, and ease of operation, providing strong support for clinical pathology research.

[0003] For example, the utility model with patent number CN220270944U discloses a pathological tissue slicing device, including a shell, with columns connected to the four corners of the bottom of the shell, a steering shaft rotatably connected to the upper end of the shell, a slicing stage connected to the top of the steering shaft, a travel groove opened at the bottom of the shell, a screw rotatably connected to the lower part of the inner cavity of the shell, a first knob connected to the front end of the screw, a nut seat screwed to the outer wall of the screw, a U-shaped seat connected to the end of the nut seat extending out of the travel groove, a side support connected to the top of the inner wall of the U-shaped seat, a horizontal rod connected to the right end of the side support, a collar connected to the right end of the horizontal rod, a vertical rod movably inserted into the collar, and a lifting seat connected to the bottom of the vertical rod. The utility model has a reasonable structural design and uses a laser beam to mark the slicing position, which is more intuitive and facilitates the adjustment of the relative position of the scalpel and the pathological tissue, which is convenient for subsequent research and observation, and is convenient and practical.

[0004] Existing pathological tissue sectioning devices simply use laser beams to mark the position of the sections, improving the accuracy of sectioning. However, in actual operation, it is usually necessary to first use a durable blade for coarse cutting and trimming, and then switch to a sharper blade for fine cutting. This not only reduces the wear on the blade during coarse cutting, but also ensures that the blade maintains optimal sharpness during fine cutting, thereby obtaining thinner, flatter, and scratch-free sections. However, existing sectioning devices usually require manual switching of blades on the blade module. The manual switching process is cumbersome and time-consuming, reducing the overall efficiency of the sectioning work, especially when frequently switching between coarse and fine cutting blades. If the blade has been used on infectious tissue samples (such as tuberculosis, viral tissue, etc.), direct contact may cause the spread of pathogens. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a pathological tissue sectioning device to solve the technical problem that existing pathological tissue sectioning devices require manual blade switching during the process of coarse cutting and trimming with durable blades and fine cutting with sharp blades.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pathological tissue sectioning device, comprising a slicer body, a base plate fixedly connected to the slicer body, two slide rails fixedly connected to the base plate, a slidable moving platform provided on the two slide rails, and a blade switching mechanism for switching between coarse and fine cutting blades installed on the moving platform.

[0007] In this solution, the blade switching mechanism achieves efficient and convenient blade switching. Traditional pathological tissue sectioning devices can usually only switch blades at a fixed blade mounting position, which is cumbersome and requires manual disassembly and reinstallation of the blades. This is not only time-consuming, but may also lead to blade damage or reduced sectioning accuracy due to improper operation. The blade switching device allows users to quickly switch between coarse and fine cutting blades directly on the device without separate disassembly, greatly saving switching time and improving work efficiency. This design not only simplifies the operation process, but also prevents frequent disassembly and reassembly from causing blade damage or contamination, increasing operational risks.

[0008] Furthermore, the blade switching mechanism includes a mounting frame, which is fixedly connected to the movable platform. A rotating shaft is installed inside the mounting frame. One end of the rotating shaft is rotatably connected to the mounting frame, and the other end of the rotating shaft passes through the mounting frame and extends to the outside. A mounting column is installed inside the mounting frame on the rotating shaft. Two blade fixing devices for mounting roughing blades and finishing blades are symmetrically arranged on the mounting column. A blade collecting device is provided inside the mounting frame.

[0009] In this solution, the blade switching mechanism drives the mounting column to rotate via a rotating shaft, enabling rapid switching of the blade fixing device without manual disassembly, greatly saving switching time and improving work efficiency.

[0010] Furthermore, the blade switching mechanism also includes a ratchet mechanism, which is disposed on the mounting frame and fixedly connected to the extension end of the rotating shaft. The mounting frame has a movable opening for the blade fixing device to pass through.

[0011] In this solution, by setting a ratchet mechanism, the unexpected rotational displacement of the shaft on the mounting shaft due to external force can be effectively prevented after the blade switching is completed, thereby ensuring the positional stability and operational reliability of the blade during the slicing process.

[0012] Furthermore, the blade fixing device includes a first fixing plate, which is fixedly connected to the mounting column. The first fixing plate has a movable groove, and a slidable movable block is provided in the movable groove. A second fixing plate is fixedly connected to the side of the movable block away from the first fixing plate. A first threaded rod is threadedly connected to the first fixing plate. One end of the first threaded rod is rotatably connected to the second fixing plate, and a gear is fixedly connected to the other end of the first threaded rod.

[0013] In this solution, the rotation of the first threaded rod drives the second fixed plate to move along the direction of the moving groove, thereby achieving the clamping and fixing of the blade between the first fixed plate and the second fixed plate. The structure is compact and the clamping force is controllable, and the operation is simple and the clamping is stable.

[0014] Furthermore, the blade collecting device includes a second threaded rod, which is disposed on the mounting frame. One end of the second threaded rod is rotatably connected to the mounting frame, and the other end of the second threaded rod passes through the mounting frame. A motor is disposed on the side wall of the mounting frame, and the power output shaft of the motor is fixedly connected to the second threaded rod. A sliding groove is provided in the mounting frame, and a slidable sliding plate is disposed in the sliding groove. The sliding plate is threadedly connected to the second threaded rod, and a collecting bucket is fixedly connected to the sliding plate. A rotating component for driving the gear to rotate is disposed on the sliding plate.

[0015] In this solution, the second threaded rod is driven by a motor to rotate, which in turn moves the sliding plate along the groove. This allows the collection bucket to be precisely moved to the first and second fixed plates below the mounting column, thus enabling the centralized collection of the released coarse or fine cutting blades during blade switching. Compared to existing technologies where manual picking is required after blade switching, posing risks of cuts and cross-contamination, this structure achieves automatic positioning and collection of waste blades. This not only improves the safety and convenience of operation but also effectively avoids safety hazards caused by lost or accidentally touched blades.

[0016] Furthermore, the rotating assembly includes a sliding frame, a slidable support block is provided inside the sliding frame, a plurality of springs are provided between the sliding frame and the support block, the two ends of the plurality of springs are respectively fixedly connected to the inner wall of the sliding frame and the support block, a toothed plate is fixedly connected to the support block, the toothed plate is provided with a toothed rail that can mesh with the gear for transmission, and two limiting plates are installed on the toothed plate.

[0017] In this design, the limiting plate and gear work together to lock the blade fixing device below the mounting column. This effectively prevents the mounting column from rotating unexpectedly due to external forces during roughing or fine cutting, thus avoiding slicing deviation problems. At the same time, the spring structure absorbs vibration and shock during the meshing of the toothed plate and gear, preventing vibration from being transmitted to the slicing area along the transmission path, ensuring the stability of the slicing process and the imaging quality.

[0018] The working principle and beneficial effects of this solution are as follows:

[0019] First, the sample tissue is fixed onto the microtome body. Rotating the first threaded rod moves the second fixing plate, creating a clamping space for the coarse cutting blade. Then, the moving stage is pushed to bring the blade into contact with the sample for coarse cutting. The motor then drives the sliding plate to move, locking the gear located below the mounting column with a limiting plate. The motor then drives the sliding plate to move in the opposite direction, ending the limiting plate's position on the gear. After coarse cutting, rotating the handle rotates the shaft and mounting column 180 degrees, switching between the coarse and fine cutting blades. After switching, the motor drives the sliding plate to move, locking the gear with the limiting plate to ensure the mounting column does not shift during slicing. When the coarse or fine cutting blade needs to be removed, the motor drives it in the opposite direction, engaging the gear plate and rotating the first threaded rod to release the blade. The blade, now free of clamping force, automatically falls into the collection container for retrieval. The entire process is compact and easy to operate, solving the technical problem of manually switching blades when using durable blades for coarse cutting and switching to sharp blades for fine cutting in existing pathological tissue slicing devices.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0022] Figure 2 This is an exploded view of the blade switching mechanism in the embodiment;

[0023] Figure 3 The figures show exploded views and partial sectional views of the blade fixing device in the embodiment.

[0024] Figure 4 This is a schematic diagram of the blade collecting device in the embodiment;

[0025] Figure 5An exploded view of the rotating component in the embodiment;

[0026] Figure 6 This is a partial cross-sectional view of the blade switching mechanism in the embodiment.

[0027] The following are labeled in the attached diagram: slicer body 1, base plate 2, slide rail 3, baffle 4, moving stage 5, mounting frame 6, rotating shaft 7, ratchet mechanism 8, first circular handle 9, mounting column 10, baffle plate 11, moving port 12, first fixed plate 13, moving block 14, second fixed plate 15, first threaded rod 16, gear 17, moving groove 18, second threaded rod 19, mounting bracket 20, motor 21, sliding plate 22, collection bucket 23, slide groove 24, sliding frame 25, several springs 26, support block 27, toothed plate 28, limiting plate 29, toothed rail 30. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method: Example

[0029] like Figures 1 to 6 As shown, a pathological tissue sectioning device is disclosed, including a slicer body 1, a base plate 2, two slide rails 3, a baffle 4, a moving stage 5, and a blade switching mechanism. The slicer body 1 is provided with a base plate 2, and two slide rails 3 are installed on the base plate 2. A baffle 4 is fixedly connected to the side of the two slide rails 3 away from the slicer body 1. The moving stage 5 is slidably arranged on the two slide rails 3. The blade switching mechanism is installed on the moving stage 5. The blade switching mechanism is used to switch between coarse cutting blades and fine cutting blades. The slicer body 1 is prior art.

[0030] like Figure 2 and Figure 6 As shown, the blade switching mechanism includes a mounting frame 6, a rotating shaft 7, a ratchet mechanism 8, a first circular handle 9, a mounting post 10, a baffle plate 11, two blade fixing devices, and a blade collecting device. The mounting frame 6 is fixedly connected to the moving platform 5. The ratchet mechanism 8 is mounted on the mounting frame 6. The rotating shaft 7 is located inside the mounting frame 6. One end of the rotating shaft 7 is rotatably connected to the mounting frame 6, and the other end of the rotating shaft 7 is fixedly connected to the ratchet mechanism 8. The first circular handle 9 is fixedly connected to the end of the rotating shaft 7 away from the mounting frame 6. The mounting post 10 is fixedly connected to the rotating shaft 7 and is located inside the mounting frame 6. The mounting frame 6 has a moving opening 12, and a baffle plate 11 is provided at the moving opening 12. Two blade fixing devices are provided on the mounting post 10, and the two blade fixing devices are arranged opposite each other on the mounting post 10. The blade collecting device is provided inside the mounting frame 6. The ratchet mechanism 8 is existing technology.

[0031] like Figure 3As shown, the blade fixing device includes a first fixing plate 13, a movable block 14, a second fixing plate 15, a first threaded rod 16, and a gear 17. The first fixing plate 13 is fixedly connected to the mounting column 10. A movable groove 18 is provided on the first fixing plate 13. The movable block 14 is slidably embedded in the movable groove 18. The second fixing plate 15 is fixedly connected to the movable block 14. The first threaded rod 16 is threadedly connected to the first fixing plate 13. One end of the first threaded rod 16 is rotatably connected to the second fixing plate 15, and the other end of the first threaded rod 16 is fixedly connected to the gear 17.

[0032] like Figure 4 As shown, the blade collecting device includes a second threaded rod 19, a mounting frame 20, a motor 21, a sliding plate 22, a collecting bucket 23, and a rotating assembly. The second threaded rod 19 is mounted on the mounting frame 6. One end of the second threaded rod 19 is rotatably connected to the mounting frame 6, and the other end of the second threaded rod 19 passes through the mounting frame 6. The mounting frame 20 is fixedly connected to the side wall of the mounting frame 6. The motor 21 is mounted on the mounting frame 20. The power output shaft of the motor 21 is fixedly connected to the second threaded rod 19 through a coupling. A sliding groove 24 is opened on the inner wall of the mounting frame 6. The sliding plate 22 is slidably arranged in the sliding groove 24. The sliding plate 22 is threadedly connected to the second threaded rod 19. The collecting bucket 23 is fixedly connected to the end of the sliding plate 22 away from the second threaded rod 19. A rotating assembly is mounted on the sliding plate 22. The coupling is existing technology.

[0033] like Figure 5 As shown, the rotating assembly includes a sliding frame 25, several springs 26, a support block 27, a toothed plate 28, and two limiting plates 29. A fixing block is fixedly connected to the sliding plate 22. Several springs 26 are provided inside the sliding frame 25. One end of each spring 26 is fixedly connected to the bottom surface of the sliding frame 25, and the other end of each spring 26 is fixedly connected to the support block 27. The support block 27 is slidably connected to the sliding frame 25. The end of the support block 27 away from the spring is fixedly connected to the toothed plate 28. A toothed rail 30 is provided on the toothed plate 28. The toothed rail 30 can mesh with the gear 17 for transmission. Two limiting plates 29 are fixedly connected to the side of the toothed plate 28 near the gear 17.

[0034] In practice

[0035] First, the sample tissue to be sliced ​​is fixed on the microtome body 1. Then, by rotating the gear 17 clockwise, the gear 17 drives the first threaded rod 16 to rotate on the first fixed plate 13, which in turn drives the second fixed plate 15 to move away from the first fixed plate 13 along the sliding trajectory of the moving block 14 in the moving groove 18. This creates a clamping space between the first fixed plate 13 and the second fixed plate 15. After the coarse cutting blade is placed into this space, the first threaded rod 16 is rotated in the opposite direction, causing the second fixed plate 15 to move closer to the first fixed plate 13, thereby clamping and fixing the coarse cutting blade. Since there are two blade fixing devices, one of which is equipped with a coarse cutting blade and the other with a fine cutting blade, when the sample tissue needs to be sliced, the coarse cutting blade is first used to coarsely cut and trim the sample tissue, and then the fine cutting blade is used to slice it.

[0036] After the coarse cutting blade is installed, push the movable stage 5 on the slide rail 3 to move it closer to the microtome body 1. A baffle 4 is provided at the end of the slide rail 3 to limit the travel of the movable stage 5 and prevent it from derailing. The base plate 2 supports and fixes the slide rail 3. Move the coarse cutting blade on the movable stage 5 until it contacts the sample tissue. At this time, start the microtome body 1 to move the sample tissue through the coarse cutting blade to achieve the purpose of surface trimming of the sample tissue. After trimming the sample tissue surface, move the movable stage 5 away from the microtome body 1 via the slide rail 3. At this time, rotate the first circular handle 9 180 degrees counterclockwise. During the rotation of the handle 9, the rotating shaft 7 will rotate on the mounting frame 6. When the rotating shaft 7 rotates, it will drive the mounting column 10 to rotate. When the mounting column 10 rotates, it will drive the coarse cutting blades on the first fixing plate 13 and the second fixing plate 15 to rotate. Since there are two opposing blade fixing devices on the mounting column 10, after the mounting column 10 rotates 180 degrees, the coarse cutting blade will rotate to the bottom and the fine cutting blade that was previously located at the bottom will rotate to the top. Before rotating the mounting column 10, the baffle plate 11 on the mounting frame 6 needs to be removed so that the first fixing plate 13 and the second fixing plate 15 on the mounting column 10 can rotate and move normally through the moving port 12 on the mounting frame 6.

[0037] After switching from the coarse cutting blade to the fine cutting blade, the motor 21 on the mounting bracket 20 is started first. The motor 21 drives the second threaded rod 19 to rotate. The rotation of the second threaded rod 19 causes the sliding plate 22 to move on the slide groove 24. The second threaded rod 19 drives the sliding plate 22 to move closer to the coarse cutting blade. During the movement of the sliding plate 22, the collection bucket 23, the sliding frame 25, the support block 27, the toothed plate 28, and the two limiting plates 29 will move. The limiting plates 29 will gradually engage with both sides of the gear 17, thereby limiting and fixing the gear 17. When coarsely cutting the sample tissue, the rotation of the second threaded rod 19 will also drive the limiting plates 29 to move to the gear 17, thereby limiting and fixing the gear 17. At this time, the moving stage 5 will be moved closer to the slicer body 1. The fine cutting blade is brought into contact with the sample tissue after coarse cutting. At this time, the microtome body 1 is started and the sample tissue is sliced ​​by the fine cutting blade. Since the gear 17 located below the mounting post 10 is limited and fixed by the two limiting plates 29, the mounting post 10 will not rotate due to the downward pressure generated by the microtome body 1 during the slicing process. When it is necessary to switch between the fine cutting blade and the coarse cutting blade, the motor 21 first drives the second threaded rod 19 to rotate. The second threaded rod 19 drives the two limiting plates 29 to move away from the gear 17, ending the limitation of the gear 17. At this time, the mounting post 10 can be rotated by rotating the first circular handle 9 counterclockwise to achieve the purpose of switching between the fine cutting blade and the coarse cutting blade.

[0038] When it is necessary to remove and switch the coarse or fine cutting blade between the first fixed plate 13 and the second fixed plate 15, firstly, rotate the coarse or fine cutting blade to be switched to the lower position via the mounting post 10. Then, drive the second threaded rod 19 to rotate via the motor 21. The second threaded rod 19 drives the sliding plate 22 to move closer to the gear 17. At this time, the toothed plate 28 on the sliding plate 22 will gradually move towards the gear 17. At this time, the two limiting plates 29 on the toothed plate 28 will pass the gear 17 first. Since the toothed plate 28 has a toothed rail 30, the toothed rail 30 will gradually mesh with the gear 17 on the first threaded rod 16. Since the toothed plate 28 is in a moving state, when the toothed plate 28 moves, it will gradually drive the gear 17 to rotate. When the gear 17 rotates, it will drive the first threaded rod 16 to rotate. During the rotation of plate 16, the second fixed plate 15 will move away from the first fixed plate 13. After the coarse or fine cutting blades clamped between the first fixed plate 13 and the second fixed plate 15 are released, the blades will automatically fall into the collection bucket 23. During the meshing of the toothed rail 30 on the toothed plate 28 and the gear 17, the support block 27 below the toothed plate 28 can move within the sliding frame 25. The spring between the support block 27 and the sliding frame 25 plays a shock-absorbing and buffering role, preventing vibrations generated during the movement from being transmitted to the mounting post 10, which would cause errors in the slicing process and reduce the slicing accuracy. Since a ratchet mechanism 8 is fixedly connected to the rotating shaft 7, a certain pushing force will be generated when the toothed rail 30 on the toothed plate 28 meshes with the gear 17. The ratchet mechanism 8 prevents the gear 17 from rotating and displacing on the rotating shaft 7 through the mounting post 10.

[0039] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A pathological tissue sectioning device, characterized in that: The slicing machine includes a slicer body, a base plate fixedly connected to the slicer body, two slide rails fixedly connected to the base plate, a slidable moving platform provided on the two slide rails, and a blade switching mechanism for switching between coarse cutting blades and fine cutting blades installed on the moving platform.

2. The pathological tissue sectioning device according to claim 1, characterized in that: The blade switching mechanism includes a mounting frame, which is fixedly connected to the moving platform. A rotating shaft is installed inside the mounting frame. One end of the rotating shaft is rotatably connected to the mounting frame, and the other end of the rotating shaft passes through the mounting frame and extends to the outside. A mounting column is installed inside the mounting frame on the rotating shaft. Two blade fixing devices for mounting roughing blades and fine cutting blades are symmetrically arranged on the mounting column. A blade collecting device is provided inside the mounting frame.

3. The pathological tissue sectioning device according to claim 2, characterized in that: The blade switching mechanism also includes a ratchet mechanism, which is disposed on the mounting frame and fixedly connected to the extension end of the rotating shaft. The mounting frame has a moving opening for the blade fixing device to pass through.

4. The pathological tissue sectioning device according to claim 2, characterized in that: The blade fixing device includes a first fixing plate, which is fixedly connected to the mounting column. The first fixing plate has a movable groove, and a slidable movable block is provided in the movable groove. A second fixing plate is fixedly connected to the side of the movable block away from the first fixing plate. A first threaded rod is threadedly connected to the first fixing plate. One end of the first threaded rod is rotatably connected to the second fixing plate, and a gear is fixedly connected to the other end of the first threaded rod.

5. A pathological tissue sectioning device according to claim 2, characterized in that: The blade collecting device includes a second threaded rod, which is mounted on the mounting frame. One end of the second threaded rod is rotatably connected to the mounting frame, and the other end of the second threaded rod passes through the mounting frame. A motor is mounted on the side wall of the mounting frame, and the motor's power output shaft is fixedly connected to the second threaded rod. A sliding groove is provided inside the mounting frame, and a slidable sliding plate is provided inside the groove. The sliding plate is threadedly connected to the second threaded rod, and a collecting bucket is fixedly connected to the sliding plate. A rotating component for driving gear rotation is provided on the sliding plate.

6. A pathological tissue sectioning device according to claim 5, characterized in that: The rotating assembly includes a sliding frame, a slidable support block is provided inside the sliding frame, a plurality of springs are provided between the sliding frame and the support block, and the two ends of the plurality of springs are respectively fixedly connected to the inner wall of the sliding frame and the support block. A toothed plate is fixedly connected to the support block, and a toothed rail is provided on the toothed plate that can mesh with the gear for transmission. Two limiting plates are installed on the toothed plate.

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