Pressing mechanism and blood smear preparation instrument

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a pressing mechanism and a blood smear preparation instrument. The pressing mechanism comprises a support, a carrying assembly, a locking block and a limiting assembly. Wherein the carrying assembly is used for placing a blood carrying slide, and the carrying assembly can move along a first direction; the locking block is hinged to the carrying assembly. The limiting assembly is arranged on the support, when the carrying assembly reaches a preset position in the first direction, one end of the locking block extrudes the limiting assembly, and the limiting assembly reacts on the locking block so that the other end of the locking block can tightly press the blood carrying slide. By means of the pressing mechanism, the pressing mechanism can accurately reach the preset position, complex power sources such as an air cylinder and transmission parts are not needed in the whole structure any more, the whole structure is simple, and manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pressing mechanism and a blood smear preparation instrument. Background Art

[0002] During the slide pushing process of the fully automatic blood smear preparation instrument, the blood-carrying glass slide after blood dripping needs to be carried to the slide pushing assembly, and the blood drop is contacted with a pusher to push out a blood film on the blood-carrying glass slide for observing cell morphology.

[0003] During the blood-pushing process, it is necessary to ensure that the blood slide does not move, that is, its spatial position cannot be offset. Otherwise, the blood film after pushing the blood will have wavy patterns and other strange shapes, which will destroy the blood cell morphology and fail to meet the blood film shape detection standards, resulting in the inability to observe the produced blood film.

[0004] In order to ensure that the spatial position of the blood slide remains unchanged during the process of the push knife pushing out the blood film, it is necessary to add an external clamping mechanism to fix the blood slide to prevent it from moving during the blood pushing process. At present, the following two methods are often used. The first method is to add a cylinder at the bottom of the carrier component, use the cylinder to raise the blood slide, and contact with the top frame to clamp the slide. The use of the cylinder makes the overall clamping mechanism structure complicated, and as the use time goes by, the clamping position error accumulates continuously, resulting in the clamping position of the blood slide not being accurate enough. In addition, the structure is not compact enough and the cost is relatively high. The second method is to directly add an elastic element to the carrier component to clamp the blood slide. This method has a simple structure, but it is difficult to control the accuracy of the running position of the blood slide. Utility Model Content

[0005] The utility model aims to provide a clamping mechanism and a blood smear preparation instrument, which can ensure that the carrying component moves the blood slide in an accurate running position, and has a simple clamping structure and low cost.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The clamping mechanism comprises:

[0008] Bracket;

[0009] A carrying assembly, the carrying assembly is used to place a blood slide, and the carrying assembly can move along a first direction;

[0010] A locking block, hinged to the carrying assembly;

[0011] A limiting assembly is arranged on the bracket. When the transport assembly reaches a preset position along the first direction, one end of the locking block squeezes the limiting assembly, and the limiting assembly reacts to the locking block so that the other end of the locking block presses the blood slide.

[0012] As an optional scheme of the clamping mechanism, the limiting assembly includes an abutment member and a first limiting member, the abutment member is rotatably connected to the bracket, and the first limiting member is fixed to the bracket. When the carrying assembly reaches the preset position along the first direction, one end of the locking block can squeeze the abutment member, and the first limiting member abuts against the abutment member to limit the rotation of the abutment member.

[0013] As an optional solution of the clamping mechanism, the limiting assembly also includes a hinge shaft erected on the bracket, the abutment is U-shaped, and the hinge shaft passes through two straight arms of the abutment; the bottom wall of the abutment is used to abut against the locking block.

[0014] As an optional solution of the clamping mechanism, friction pads are provided at both ends of the hinge shaft, and the friction pads are attached to the outward side walls of the two straight arms of the abutment member.

[0015] As an optional solution of the clamping mechanism, both ends of the hinge shaft are detachably sleeved with elastic retaining rings, and the elastic retaining rings are attached to the side wall of the friction pad away from the abutment member.

[0016] As an optional scheme of the clamping mechanism, the limiting assembly also includes a first elastic member and a second limiting member, one end of the first elastic member is connected to the bracket, and the other end is connected to the abutment member, when the carrying assembly leaves the preset position along the first direction, the first elastic member can drive the abutment member to rotate and reset.

[0017] As an optional solution of the clamping mechanism, the abutment member is provided with a connecting portion protruding from the straight arm close to the bracket, the connecting portion is connected to the other end of the first elastic member, and the side wall of the connecting portion is used to abut against the first limiting member.

[0018] As an optional solution of the clamping mechanism, a roller is provided at one end of the locking block, and the roller is used to squeeze the abutment member.

[0019] As an optional scheme of the clamping mechanism, the transport assembly includes a carrier and a second elastic member, the locking block is hinged to the bottom of the carrier, one end of the second elastic member is connected to the carrier, and the other end is connected to the locking block, and the second elastic member is used to make the other end of the locking block squeeze the side wall of the blood slide.

[0020] A blood smear preparation instrument comprises a pressing mechanism as described in any of the above schemes.

[0021] Beneficial effects:

[0022] In the first aspect of the utility model, the bracket provides positioning and support for other components of the entire clamping mechanism, the carrying assembly is used to place the blood slide, the blood slide is used to carry the blood sample and prepare for the subsequent slide pushing operation, the locking block is used to lock the blood slide on the carrying assembly, the locking block is hinged to the carrying assembly, and the carrying assembly moves on the bracket along the first direction after loading the blood slide. When reaching the preset position, one end of the locking block squeezes the limiting assembly, and the limiting assembly reacts on the locking block, so that the other end of the locking block can squeeze one end of the blood slide, thereby achieving the blood slide being clamped. At the same time, the position setting of the limiting assembly can assist the clamping mechanism to accurately reach the preset position, and the entire structure no longer requires complex power sources and transmission parts such as cylinders, and the overall structure is simple and the manufacturing cost is low;

[0023] In the second aspect of the utility model, the blood smear preparation instrument equipped with the above-mentioned pressing mechanism can ensure that the blood-carrying glass slide remains stable during the blood pushing process, ensure the blood film shape detection standard, and avoid blood sample waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the clamping mechanism provided by an embodiment of the utility model;

[0025] Figure 2 This is a schematic structural diagram of a first-viewing angle of view of a pressing mechanism of a hidden carrier assembly provided in an embodiment of the utility model;

[0026] Figure 3 It is a second perspective structural schematic diagram of the clamping mechanism of the hidden carrier assembly provided in an embodiment of the utility model.

[0027] In the figure:

[0028] X, first direction;

[0029] 100. Blood slide;

[0030] 1. Bracket; 11. Fixing plate; 111. Connecting screws;

[0031] 2. Carrying assembly; 21. Carrying platform; 22. Second elastic member;

[0032] 3. Locking block; 31. Roller;

[0033] 4. Limiting assembly; 41. Abutting member; 411. Connecting portion; 42. First limiting member; 43. Articulated shaft; 44. Friction pad; 45. Elastic retaining ring; 46. First elastic member; 47. Second limiting member. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions 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.

[0038] Please see attached Figure 1 and attached Figure 2The first aspect of this embodiment relates to a clamping mechanism, which is used to limit and clamp the blood slide 100 before the slide pushing operation. Specifically, the clamping mechanism includes a bracket 1, a carrier assembly 2, a locking block 3 and a limiting assembly 4. Among them, the carrier assembly 2 is used to place the blood slide 100, and the carrier assembly 2 can move along the first direction X; the locking block 3 is hinged to the carrier assembly 2; the limiting assembly 4 is arranged on the bracket 1, and when the carrier assembly 2 reaches a preset position along the first direction X, one end of the locking block 3 squeezes the limiting assembly 4, and the limiting assembly 4 reacts to the locking block 3, so that the other end of the locking block 3 presses the blood slide 100.

[0039] The support 1 is a plate-shaped component, which is used to provide positioning and support for other components of the entire pressing mechanism, wherein the carrying component 2 is a carrying trolley that can move along the first direction X on the support 1, and the top of the carrying component 2 has a mounting position for placing a blood slide 100, and the blood slide 100 is used to carry the blood sample and prepare for the subsequent slide pushing operation. The locking block 3 can be used to lock the blood slide 100 on the carrying component 2, and a limiting step is convexly provided on one end of the carrying component 2 away from the locking block 3, which is used to abut against one end of the blood slide 100, and the locking block 3 and the carrying component 2 are connected. The component 2 is hinged, and the carrying component 2 moves on the bracket 1 along the first direction X after being loaded with the blood slide 100. When reaching the preset position, one end of the locking block 3 squeezes the limiting component 4, and the limiting component 4 reacts to the locking block 3, so that the other end of the locking block 3 can squeeze one end of the blood slide 100, completing the action of clamping the blood slide 100. At the same time, the position setting of the limiting component 4 can assist the clamping mechanism to accurately reach the preset position. The entire structure no longer requires complex power sources and transmission parts such as cylinders, and the overall structure is simple and the manufacturing cost is low.

[0040] Optionally, the limiting component 4 includes an abutment 41 and a first limiting component 42, the abutment 41 is rotatably connected to the bracket 1, and the first limiting component 42 is fixed to the bracket 1. When the carrying component 2 reaches a preset position along the first direction X, one end of the locking block 3 can squeeze the abutment 41, and the first limiting component 42 abuts against the abutment 41 to limit the rotation of the abutment 41.

[0041] In this embodiment, a fixing plate 11 is screwed onto the bracket 1, and the first limiting member 42 can be a limiting screw or a positioning pin. The first limiting member 42 is screwed or riveted to the fixing plate 11, and the abutment member 41 is hinged to the bracket 1 through the fixing plate 11. Specifically, when the carrying component 2 gradually moves along the first direction X, one end of the locking block 3 continuously squeezes the abutment member 41, causing the abutment member 41 to rotate clockwise. When the carrying component 2 reaches the preset position, the first limiting member 42 just abuts against the abutment member 41, thereby limiting the rotation of the abutment member 41.

[0042] Furthermore, the limiting assembly 4 also includes a hinge shaft 43 erected on the bracket 1 , the abutment 41 is U-shaped, and the hinge shaft 43 passes through two straight arms of the abutment 41 ; the bottom wall of the abutment 41 is used to abut against the locking block 3 .

[0043] In this embodiment, the abutment 41 is hinged to the fixed plate 11 through the hinge shaft 43. Specifically, the abutment 41 is U-shaped and is a plate-like structure. The abutment 41 includes two straight arms and a bottom wall connected to the two straight arms, wherein the two straight arms are provided with hinge holes, and the hinge shaft 43 passes through the hinge holes to achieve hinged cooperation. The bottom wall extends outwardly to achieve abutment with the end of the locking block 3. When the locking block 3 continuously squeezes the abutment 41, the abutment 41 rotates clockwise around the hinge shaft 43. When the carrying assembly 2 reaches the preset position along the first direction X, the abutment 41 is blocked by the first limiter 42, and the abutment 41 stops rotating, and the locking block 3 stops rotating.

[0044] Please see attached Figure 3 In this embodiment, a threaded hole is opened on one side of the fixing plate 11 , and the hinge shaft 43 is fixed to the fixing plate 11 by screwing in a connecting screw 111 and threading the connecting screw 111 to the hinge shaft 43 .

[0045] Optionally, friction pads 44 are provided at both ends of the hinge shaft 43 , and the friction pads 44 are attached to the outwardly facing side walls of the two straight arms of the abutment member 41 .

[0046] In this embodiment, when the carrying assembly 2 reaches the preset position, the abutment 41 is continuously rotating, and the friction pad 44 is also in relative motion with the abutment 41 in the process of realizing the axial limitation of the abutment 41 relative to the hinge shaft 43. The abutment 41 and the friction pad 44 can be made of conventional wear-resistant or friction-reducing materials to ensure that the abutment 41 and the friction pad 44 maintain a high service life during the relative motion between the abutment 41 and the friction pad 44.

[0047] Furthermore, elastic retaining rings 45 are detachably sleeved on both ends of the hinge shaft 43 , and the elastic retaining rings 45 are attached to the side wall of the friction pad 44 away from the abutment member 41 .

[0048] In this embodiment, the elastic retaining ring 45 adopts an open retaining ring, which is a standard part. At the same time, the open retaining ring is easy to cooperate with the hinge shaft 43 through the opening. Specifically, grooves for clamping the elastic retaining ring 45 are provided at both ends of the hinge shaft 43. The elastic retaining ring 45 is clamped to ensure the stability of the axial limit of the friction pad 44 and the abutment 41.

[0049] Optionally, the limiting component 4 also includes a first elastic member 46 and a second limiting member 47. One end of the first elastic member 46 is connected to the bracket 1, and the other end is connected to the abutment 41. When the carrying component 2 leaves the preset position along the first direction X, the first elastic member 46 can drive the abutment 41 to rotate and reset.

[0050] In this embodiment, the first elastic member 46 is a common spring structure, one end of the first elastic member 46 is hooked on a hexagonal stud screwed on the bracket 1, and the other end is hooked on the abutment 41. On the one hand, when the carrying component 2 gradually moves to the preset position, the abutment 41 rotates clockwise, and at the same time the first elastic member 46 is stretched and provides a reverse rotational torque for the abutment 41, thereby achieving buffering of the carrying component 2. On the other hand, after the first elastic member 46 is stretched, there is a tendency for the abutment 41 to rotate in the opposite direction, and the reaction force of the abutment 41 on the locking block 3 is increased, further enhancing the clamping force of the locking block 3 on the blood slide 100.

[0051] Optionally, a connecting portion 411 is protruded from the straight arm of the abutting member 41 close to the bracket 1 , and the connecting portion 411 is connected to the other end of the first elastic member 46 , and a side wall of the connecting portion 411 is used to abut against the first limiting member 42 .

[0052] In this embodiment, the outwardly extending portion of the straight arm on one side of the abutment member 41 forms a connecting portion 411, and a connecting hole is provided on the connecting portion 411 to provide an installation position for the hanging of the first elastic member 46. At the same time, the side wall of the connecting portion 411 abuts against the first limiting member 42 to achieve limiting cooperation. The connecting portion 411 and the abutment member 41 are an integrated structure and can be manufactured by bending a plate.

[0053] Optionally, a roller 31 is provided at one end of the locking block 3 , and the roller 31 is used to press the abutment member 41 .

[0054] In this embodiment, the roller 31 can be in contact and squeezed with the abutment 41 through the circumferential outer wall, and the curved surface contact form can ensure that the squeezing force changes gradually without damaging the surface of the abutment 41 .

[0055] Optionally, the transport assembly 2 includes a platform 21 and a second elastic member 22, the locking block 3 is hinged to the bottom of the platform 21, one end of the second elastic member 22 is connected to the platform 21, and the other end is connected to the locking block 3, and the second elastic member 22 is used to make the other end of the locking block 3 squeeze the side wall of the blood slide 100.

[0056] The carrier 21 of the carrier assembly 2 is used to place the blood slide 100. A second elastic member 22 is provided at the bottom of the carrier 21. The second elastic member 22 can also be a conventional spring, one end of which is hung on the locking block 3 and the other end is hung on the bottom of the carrier 21. Before the operator places the blood slide 100 on the carrier 21, the locking block 3 can be manually moved to pull the second elastic member 22. After placing the blood slide 100 on the carrier 21, the locking block 3 is released, and the second elastic member 22 is elastically restored, so that the blood slide 100 is initially pressed on the carrier 21. The elastic effects of the second elastic member 22 and the first elastic member 46 can be converted into the pressing force of the locking block 3 on the end of the blood slide 100. The effects of the two further ensure that the pressing force is sufficient and the pressing is reliable.

[0057] The second aspect of this embodiment also relates to a blood smear preparation instrument, which includes the above-mentioned pressing mechanism.

[0058] The blood smear preparation instrument with the above pressing mechanism can ensure that the blood-carrying glass slide 100 remains stable during the blood pushing process, ensure the blood film shape detection standard, and avoid blood sample waste.

[0059] 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. A clamping mechanism, characterized in that: include: Bracket (1); A transport component (2), the transport component (2) being used to place a blood slide (100), and the transport component (2) being movable along a first direction (X); A locking block (3) is hinged to the carrying assembly (2); A limit assembly (4) is arranged on the support (1); when the transport assembly (2) reaches a preset position along the first direction (X), one end of the locking block (3) presses the limit assembly (4), and the limit assembly (4) reacts to the locking block (3) so that the other end of the locking block (3) presses the blood slide (100).

2. The clamping mechanism according to claim 1, characterized in that: The limiting component (4) comprises a contact member (41) and a first limiting component (42); the contact member (41) is rotatably connected to the bracket (1); the first limiting component (42) is fixed to the bracket (1); when the carrying component (2) reaches the preset position along the first direction (X), one end of the locking block (3) can squeeze the contact member (41), and the first limiting component (42) abuts against the contact member (41) to limit the rotation of the contact member (41).

3. The clamping mechanism according to claim 2, characterized in that: The limiting assembly (4) further comprises a hinge shaft (43) vertically arranged on the bracket (1); the abutment member (41) is U-shaped, and the hinge shaft (43) passes through two straight arms of the abutment member (41); the bottom wall of the abutment member (41) is used for abutting against the locking block (3).

4. The clamping mechanism according to claim 3, characterized in that: Friction pads (44) are provided at both ends of the hinge shaft (43), and the friction pads (44) are attached to the outward-facing side walls of the two straight arms of the abutment member (41).

5. The clamping mechanism according to claim 4, characterized in that: Both ends of the hinge shaft (43) are respectively and detachably sleeved with elastic retaining rings (45), and the elastic retaining rings (45) are attached to the side wall of the friction pad (44) away from the abutment member (41).

6. The clamping mechanism according to claim 3, characterized in that: The limiting component (4) further comprises a first elastic member (46) and a second limiting member (47); one end of the first elastic member (46) is connected to the bracket (1), and the other end is connected to the abutment member (41); when the carrying component (2) leaves the preset position along the first direction (X), the first elastic member (46) can drive the abutment member (41) to rotate and reset.

7. The clamping mechanism according to claim 6, characterized in that: The abutment member (41) is provided with a connecting portion (411) protruding from the straight arm close to the bracket (1); the connecting portion (411) is connected to the other end of the first elastic member (46); and the side wall of the connecting portion (411) is used to abut against the first limiting member (42).

8. The clamping mechanism according to claim 2, characterized in that: A roller (31) is provided at one end of the locking block (3), and the roller (31) is used to press the abutment member (41).

9. The clamping mechanism according to any one of claims 1 to 8, characterized in that: The carrier assembly (2) comprises a carrier (21) and a second elastic member (22); the locking block (3) is hinged to the bottom of the carrier (21); one end of the second elastic member (22) is connected to the carrier (21), and the other end is connected to the locking block (3); the second elastic member (22) is used to enable the other end of the locking block (3) to squeeze the side wall of the blood slide (100).

10. A blood smear preparation apparatus, characterized in that: It comprises a clamping mechanism as described in any one of claims 1 to 9.

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