Push broach device and smear preparation equipment

Abstract

The utility model belongs to the technical field of medical detection, and discloses a push-type broach device and smear preparation equipment, the push-type broach device comprises a mounting plate and a push-type broach head assembly, the push-type broach head assembly is rotatably connected with the mounting plate, the push-type broach head assembly comprises a counterweight adjusting mechanism, a mounting rack and a tool head mechanism, the tool head mechanism is detachably connected to the mounting rack, and the mounting rack is rotatably connected with the mounting plate. The balance weight adjusting mechanism comprises a balance weight block and an adjusting screw rod, the adjusting screw rod is in threaded connection with the balance weight block, the adjusting screw rod is rotatably connected to the installation frame so that the balance weight block can move in a reciprocating mode in the axial direction of the adjusting screw rod, and when the balance weight block moves, the push broach head assembly can rotate in the first direction. According to the push broach device, the position of the balancing weight can be quickly and accurately micro-adjusted, the adjustment operation is convenient, and repeated adjustment is not needed. The smear preparation equipment is provided with the push broach device, the broach head mechanism can be always in contact with the glass slide, the space angle is consistent, and the smear preparation requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection, in particular to a knife pushing device and smear preparation equipment. Background Art

[0002] During the push operation of the fully automatic blood smear preparation instrument, the slide after the blood drop needs to be carried to the slide push assembly, and the push knife of the slide push assembly is used to contact the blood drop and spread the blood backwards, and then move forward at a certain angle relative to the slide, so as to form a blood film on the slide for observing cell morphology. In this process, the bottom end of the push knife needs to be in full contact with the slide to prevent the blood film from having uneven thickness on both sides after pushing the blood; at the same time, the push knife needs to keep the same spatial angle with the slide, otherwise the blood film after pushing the blood will have a strange shape, destroy the blood cell morphology, and fail to meet the blood film shape detection standard, and the produced blood film cannot be observed.

[0003] In order to ensure that the bottom of the push knife can be in full contact with the slide and keep the same angle with the slide during the blood pushing process, the center of gravity of the push knife needs to remain unchanged during the blood pushing process. The commonly used method is to add a counterweight block to the blade head assembly with the push knife. The counterweight block is fixed in position by screws, and the position of the counterweight block on the blade head assembly is adjusted to achieve the center of gravity of the push knife remaining unchanged during the blood pushing process. However, the above method of adjusting the position of the counterweight block of the push knife blade head is too rough. The counterweight block will rotate during the adjustment process and cannot be fine-tuned. The adjustment position depends entirely on the feel of the hand. It takes multiple attempts to observe to find the best position. The adjustment speed is slow and the operation is inconvenient. Utility Model Content

[0004] One purpose of the utility model is to provide a blade pushing device, which can solve the problems that the counterweight block of the existing blade pushing assembly rotates during the adjustment process and cannot be fine-tuned, the adjustment position is inaccurate, the adjustment speed is slow, and the operation is inconvenient.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A push knife device is provided, comprising a mounting plate and a push knife head assembly, wherein the push knife head assembly is rotatably connected to the mounting plate, the push knife head assembly comprises a counterweight adjustment mechanism, a mounting frame and a cutter head mechanism, the cutter head mechanism is detachably connected to the mounting frame, the counterweight adjustment mechanism comprises a counterweight block and an adjusting screw, the adjusting screw is threadedly connected to the counterweight block, the adjusting screw is rotatably connected to the mounting frame to enable the counterweight block to reciprocate along the axial direction of the adjusting screw, and when the counterweight block moves, the push knife head assembly can rotate around a first direction.

[0007] In one embodiment, the push blade head assembly also includes a locking mechanism, which connects the counterweight block and the mounting frame. The locking mechanism has an unlocked state and a working state. When the locking mechanism is in the unlocked state, the counterweight block can reciprocate along the axial direction of the adjusting screw. When the locking mechanism is in the working state, the counterweight block is locked to the mounting frame.

[0008] In one of the embodiments, the locking mechanism includes a positioning screw, a penetrating mounting hole is formed on the mounting frame, and the positioning screw passes through the mounting hole and is threadedly connected to the counterweight.

[0009] In one of the embodiments, the axial direction of the positioning screw is perpendicular to the axial direction of the adjusting screw, so that the counterweight block is locked to the mounting frame along the axial direction perpendicular to the adjusting screw.

[0010] In one of the embodiments, the length of the mounting hole is extended along the axial direction of the adjusting screw to form a waist-shaped hole, and when the counterweight block reciprocates along the axial direction of the adjusting screw, the positioning screw can slide along the length direction of the mounting hole.

[0011] In one embodiment, a guide hole is provided on the mounting frame, an adjustment threaded hole is provided on the counterweight block, one end of the adjustment screw is located outside the mounting frame, and the other end passes through the guide hole to be threadedly connected to the adjustment threaded hole.

[0012] In one embodiment, the mounting frame is provided with a limiting mechanism, and the limiting mechanism is used to abut and limit the axial movement of the adjusting screw.

[0013] In one embodiment, the cutter head mechanism comprises a support plate and a push knife, wherein the push knife is detachably connected to the support plate, and the support plate is detachably connected to the mounting frame; and / or,

[0014] The cutter head mechanism is rotatably arranged on the mounting frame, and the cutter head mechanism can rotate around a second direction, and the second direction is parallel to the axial direction of the adjusting screw.

[0015] In one embodiment, the mounting frame includes a support frame and a counterweight block pressure plate, the counterweight block pressure plate and the support frame are detachably connected to enclose a mounting cavity, the cutter head mechanism is detachably connected to the support frame, the counterweight block is detachably connected to the counterweight block pressure plate, and the cutter head mechanism and the counterweight block are accommodated in the mounting cavity.

[0016] Another object of the utility model is to provide a smear preparation device, which has a knife pusher device that can quickly and accurately fine-tune the position of the counterweight block, and the adjustment operation is convenient.

[0017] To achieve this purpose, the utility model adopts the following technical solutions on the other hand:

[0018] A smear preparation device is provided, comprising the above-mentioned pusher device, the smear preparation device also comprising a carrier, the carrier is used to carry the glass slide, and the blade head mechanism of the pusher device can abut against the glass slide.

[0019] Beneficial effects of the utility model:

[0020] The push knife device provided by the utility model has a counterweight adjustment mechanism including a counterweight block and an adjustment screw, the adjustment screw is threadedly connected to the counterweight block, and the adjustment screw is rotatably connected to the mounting frame so that the counterweight block can reciprocate along the axial direction of the adjustment screw. With the movement of the counterweight block, the overall center of gravity of the push knife blade assembly is also offset, and the push knife blade assembly can rotate on the mounting plate around the first direction, so that the end of the blade mechanism can always maintain full contact with the glass slide, and the blade mechanism and the glass slide always maintain a consistent spatial angle, and the thickness of the blood film on both sides after pushing the blood is relatively uniform and the shape is regular, avoiding damage to the blood cell morphology, and meeting the blood film shape detection standard. The counterweight block and the adjustment screw are connected by a thread, and the counterweight block will not rotate during the position adjustment process of axial movement on the adjustment screw, and by controlling the number of rotations of the adjustment screw, combined with the pitch of the thread, the counterweight block can achieve precise position micro-movement, without the need for repeated attempts and observations, and is easy to adjust.

[0021] The smear preparation equipment provided by the utility model includes the above-mentioned knife pushing device. The knife pushing device reciprocates along the axial direction of the adjusting screw through the counterweight block, so that the overall center of gravity of the knife pushing head assembly is shifted, so that the end of the knife head mechanism can always maintain complete contact with the glass slide, and the knife head mechanism and the glass slide always maintain a consistent spatial angle. The thickness of the blood film on both sides after pushing the blood is relatively uniform and the shape is regular, avoiding damage to the blood cell morphology and meeting the blood film shape detection standard; the counterweight block will not rotate during the position adjustment process of axial movement on the adjusting screw, and accurate position micro-movement can be achieved to meet the use requirements of the smear preparation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the knife pushing device provided by the embodiment of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the knife pushing device provided by the embodiment of the utility model. Figure 2 .

[0024] In the figure:

[0025] 1. Mounting plate;

[0026] 2. Push knife head assembly; 21. Counterweight adjustment mechanism; 211. Counterweight block; 212. Adjusting screw; 22. Mounting frame; 221. Mounting hole; 222. Support frame; 223. Counterweight block pressure plate; 224. Mounting cavity; 23. Knife head mechanism; 231. Support plate; 232. Push knife; 24. Locking mechanism; 241. Positioning screw. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] like Figure 1 and Figure 2As shown, this embodiment provides a knife-pushing device, which includes a mounting plate 1 and a knife-pushing blade head assembly 2, and the knife-pushing blade head assembly 2 is rotatably connected to the mounting plate 1. The knife-pushing blade head assembly 2 includes a counterweight adjustment mechanism 21, a mounting frame 22, and a knife-pushing blade mechanism 23, and the knife-pushing blade mechanism 23 is detachably connected to the mounting frame 22. After the knife-pushing blade mechanism 23 pushes blood for many times, the contact and friction between the knife-pushing blade mechanism 23 and the glass slide will cause the position of the knife-pushing blade mechanism 23 to shift, resulting in a slight shift in the center of gravity of the knife-pushing blade head assembly 2, which affects the contact between the knife-pushing blade mechanism 23 and the glass slide, as well as the relative angle between the knife-pushing blade mechanism 23 and the glass slide, thereby affecting the quality of blood pushing. The counterweight adjustment mechanism 21 includes a counterweight block 211 and an adjusting screw 212. The adjusting screw 212 is threadedly connected to the counterweight block 211. The adjusting screw 212 is rotatably connected to the mounting frame 22 to allow the counterweight block 211 to reciprocate along the axial direction of the adjusting screw 212. As the counterweight block 211 moves, the overall center of gravity of the push knife head assembly 2 also shifts. The push knife head assembly 2 can rotate on the mounting plate 1 around a first direction, so that the end of the knife head mechanism 23 can always maintain full contact with the glass slide, and the knife head mechanism 23 and the glass slide always maintain a consistent spatial angle. The thickness of both sides of the blood film after pushing blood is relatively uniform and the shape is regular, which avoids damage to the blood cell morphology and meets the blood film shape detection standard. The counterweight 211 and the adjusting screw 212 are connected by a thread. The counterweight 211 will not rotate during the position adjustment process of axial movement on the adjusting screw 212. By controlling the number of rotations of the adjusting screw 212 and combining the pitch of the thread, the counterweight 211 can achieve precise position micro-movement. There is no need for repeated attempts and observations, and the adjustment is convenient, meeting the use requirements of the push-knife device.

[0032] It should be noted that the first direction is not specifically limited in this embodiment, and the rotation axis direction of the push blade head assembly 2 is different according to the specific structure of different push blade devices. As shown in the drawings, the first direction is perpendicular to the axial direction of the adjusting screw 212.

[0033] The rotation of the adjusting screw 212 can be controlled by manual screwing, or driven by a power source such as a motor, which is not specifically limited in this embodiment. In order to reduce the deadweight of the blade pushing device and simplify the structure, manual screwing operation is generally adopted.

[0034] In practical applications, different adjustment accuracies can be achieved by selecting fine pitch threads or coarse pitch threads for the adjusting screw 212. The method for calculating the displacement of the counterweight 211 by the pitch of the threads and the number of rotations of the adjusting screw 212 can be performed with reference to the prior art, and this embodiment will not be described in detail here.

[0035] In one embodiment, the push blade head assembly 2 further includes a locking mechanism 24, which connects the counterweight 211 and the mounting frame 22, and has an unlocked state and a working state. When the locking mechanism 24 is in the unlocked state, the counterweight 211 can reciprocate along the axial direction of the adjusting screw 212, and the position of the counterweight 211 can be adjusted; when the locking mechanism 24 is in the working state, the counterweight 211 is locked to the mounting frame 22, ensuring that the counterweight 211 remains stationary after the position adjustment.

[0036] Specifically, the locking mechanism 24 includes a positioning screw 241. A penetrating mounting hole 221 is provided on the mounting frame 22. The positioning screw 241 passes through the mounting hole 221 and is threadedly connected to the counterweight 211. The locking mechanism 24 can be switched between the unlocked state and the working state by screwing the positioning screw 241.

[0037] Optionally, the axial direction of the positioning screw 241 is perpendicular to the axial direction of the adjusting screw 212, so that the counterweight 211 is locked to the mounting frame 22 along the axial direction perpendicular to the adjusting screw 212. In this way, the positioning screw 241 and the adjusting screw 212 are perpendicular to each other, further increasing the stability of the counterweight 211. Even if the locking mechanism 24 is in the unlocked state, the counterweight 211 is connected to the positioning screw 241 and the adjusting screw 212 at the same time, so that the stability can still be maintained without rotation, shaking, etc.

[0038] In order to increase the ease of use of the locking mechanism 24, the length of the mounting hole 221 is extended along the axial direction of the adjusting screw 212 to form a waist-shaped hole. When the counterweight block 211 moves back and forth along the axial direction of the adjusting screw 212, the positioning screw 241 can slide along the length direction of the mounting hole 221. In this way, the positioning screw 241 does not need to be detached from the counterweight block 211, and only needs to be loosened.

[0039] In one embodiment, a guide hole is provided on the mounting frame 22, an adjustment threaded hole is provided on the counterweight 211, and one end of the adjustment screw 212 is located outside the mounting frame 22, so as to facilitate adjustment operation from outside the mounting frame 22. The other end of the adjustment screw 212 passes through the guide hole to be threadedly connected to the adjustment threaded hole. The adjustment threaded hole may pass through the counterweight 211 or may not pass through the counterweight 211. When the adjustment threaded hole does not pass through the counterweight 211, the adjustment screw 212 only needs to be connected to one side of the mounting frame 22.

[0040] Furthermore, the mounting frame 22 is also provided with a limiting mechanism, which is used to abut and limit the axial movement of the adjusting screw 212. When the adjusting screw 212 is rotated, the limiting mechanism can ensure that the adjusting screw 212 does not move axially, and only the counterweight 211 moves axially along the adjusting screw 212. Specifically, the limiting mechanism may include a limiting nut (not shown in the figure) and a limiting end seat, the limiting end seat is arranged at one end of the adjusting screw 212 located on the outside of the mounting frame 22, and the diameter of the limiting end seat is larger than the diameter of the guide hole, so as to ensure that the adjusting screw 212 does not move to the inside of the mounting frame 22; the limiting nut can be mounted on one end of the adjusting screw 212 located on the inside of the mounting frame 22, and the limiting nut is located between the counterweight 211 and the mounting frame 22, and the limiting nut abuts against the inside of the mounting frame 22 to prevent the adjusting screw 212 from moving to the outside of the mounting frame 22.

[0041] In one embodiment, the blade mechanism 23 includes a support plate 231 and a push blade 232 , and the push blade 232 is detachably connected to the support plate 231 by a plurality of screws, so as to facilitate the replacement of the push blade 232 . The support plate 231 is detachably connected to the mounting frame 22 .

[0042] In one embodiment, the push knife 232 has a rotation adjustment function with two degrees of freedom. At this time, the support plate 231 is rotatably arranged on the mounting frame 22, and the support plate 231 can rotate around a second direction, and the second direction is parallel to the axial direction of the adjustment screw 212. In this way, the push knife head assembly 2 drives the push knife 232 to rotate around a first direction, and the support plate 231 drives the push knife 232 to rotate around a second direction, so that the push knife 232 can rotate with two degrees of freedom, and the contact with the slide is more closely. The two degrees of freedom rotation of the push knife 232 is shown in the figure. Figure 2 as shown in .

[0043] In one embodiment, the mounting frame 22 includes a support frame 222 and a counterweight plate 223. The counterweight plate 223 and the support frame 222 are detachably connected to enclose a mounting cavity 224. The cutter head mechanism 23 is detachably connected to the support frame 222. The counterweight 211 is detachably connected to the counterweight plate 223. The cutter head mechanism 23 and the counterweight 211 are accommodated in the mounting cavity 224. The mounting frame 22 provides a protective space for the cutter head mechanism 23 and the counterweight 211, and facilitates the disassembly, assembly and maintenance of the knife pushing device.

[0044] The embodiment of the utility model also provides a smear preparation device, which includes the above-mentioned push knife device. The smear preparation device also includes a carrier, which is used to carry a glass slide, and the blade head mechanism 23 of the push knife device can abut the glass slide. The push knife device reciprocates along the axial direction of the adjusting screw 212 through the counterweight block 211 of the counterweight adjustment mechanism 21, so that the overall center of gravity of the push knife blade assembly 2 is offset, so that the end of the blade head mechanism 23 can always maintain full contact with the glass slide, and the blade head mechanism 23 and the glass slide always maintain a consistent spatial angle. The thickness of the two sides of the blood film after pushing the blood is relatively uniform and the shape is regular, avoiding damage to the blood cell morphology, and meeting the blood film shape detection standard; the counterweight block 211 will not rotate during the position adjustment process of axial movement on the adjusting screw 212, and can achieve precise position micro-shifting to meet the use requirements of the smear preparation device.

[0045] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. The knife pushing device is characterized in that: The push knife head assembly (2) comprises a mounting plate (1) and a push knife head assembly (2), wherein the push knife head assembly (2) is rotatably connected to the mounting plate (1), the push knife head assembly (2) comprises a counterweight adjustment mechanism (21), a mounting frame (22) and a head mechanism (23), wherein the head mechanism (23) is detachably connected to the mounting frame (22), the counterweight adjustment mechanism (21) comprises a counterweight block (211) and an adjusting screw (212), wherein the adjusting screw (212) is threadedly connected to the counterweight block (211), and the adjusting screw (212) is rotatably connected to the mounting frame (22) so that the counterweight block (211) reciprocates along the axial direction of the adjusting screw (212), and when the counterweight block (211) moves, the push knife head assembly (2) can rotate about a first direction.

2. The blade pushing device according to claim 1, characterized in that: The push blade head assembly (2) further comprises a locking mechanism (24), wherein the locking mechanism (24) connects the counterweight block (211) and the mounting frame (22), and the locking mechanism (24) has an unlocking state and a working state. When the locking mechanism (24) is in the unlocking state, the counterweight block (211) can reciprocate along the axial direction of the adjusting screw (212), and when the locking mechanism (24) is in the working state, the counterweight block (211) is locked to the mounting frame (22).

3. The blade pushing device according to claim 2, characterized in that: The locking mechanism (24) comprises a positioning screw (241); a penetrating mounting hole (221) is provided on the mounting frame (22); the positioning screw (241) passes through the mounting hole (221) and is threadedly connected to the counterweight block (211).

4. The blade pushing device according to claim 3, characterized in that: The axial direction of the positioning screw (241) is perpendicular to the axial direction of the adjusting screw (212), so that the counterweight (211) is locked to the mounting frame (22) along an axial direction perpendicular to the adjusting screw (212).

5. The blade pushing device according to claim 4, characterized in that: The length of the mounting hole (221) is extended along the axial direction of the adjusting screw (212) to form a waist-shaped hole. When the counterweight (211) reciprocates along the axial direction of the adjusting screw (212), the positioning screw (241) can slide along the length direction of the mounting hole (221).

6. The blade pushing device according to claim 1, characterized in that: The mounting frame (22) is provided with a guide hole, the counterweight block (211) is provided with an adjustment threaded hole, one end of the adjustment screw rod (212) is located outside the mounting frame (22), and the other end passes through the guide hole to be threadedly connected to the adjustment threaded hole.

7. The blade pushing device according to any one of claims 1 to 6, characterized in that: The mounting frame (22) is provided with a limiting mechanism, and the limiting mechanism is used to abut and limit the axial movement of the adjusting screw (212).

8. The blade pushing device according to any one of claims 1 to 6, characterized in that: The blade head mechanism (23) comprises a support plate (231) and a push blade (232), wherein the push blade (232) is detachably connected to the support plate (231), and the support plate (231) is detachably connected to the mounting frame (22); and / or, The cutter head mechanism (23) is rotatably arranged on the mounting frame (22), and the cutter head mechanism (23) is capable of rotating about a second direction, wherein the second direction is parallel to the axial direction of the adjusting screw (212).

9. The blade pushing device according to any one of claims 1 to 6, characterized in that: The mounting frame (22) comprises a support frame (222) and a counterweight plate (223); the counterweight plate (223) and the support frame (222) are detachably connected to enclose a mounting cavity (224); the cutter head mechanism (23) is detachably connected to the support frame (222); the counterweight (211) is detachably connected to the counterweight plate (223); and the cutter head mechanism (23) and the counterweight (211) are accommodated in the mounting cavity (224).

10. A smear preparation device, characterized in that The smear preparation device comprises a knife-pushing device as described in any one of claims 1 to 9, and further comprises a carrier, the carrier is used for carrying a glass slide, and a knife head mechanism (23) of the knife-pushing device can abut against the glass slide.

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