Cell scraper with smearing function
By adding support structures and reset structures to the cell scraper, the hardness adjustment of the scraper brush head is solved, and the high management cost problem caused by the single function of existing cell scraper is achieved, and the dual functions of cell smearing and scraping are realized, which improves the experimental efficiency.
Patent Information
- Application Number
- CN202421400340.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing cell scraper has a single function, which leads to high cost of laboratory equipment management and requires frequent replacement of the application rod and cell scraper.
A cell scraper with application function was designed. By adding a support structure and reset structure to the traditional cell scraper structure, the hardness adjustment of the scraper brush head can be achieved, which can not only perform cell smearing and cell scraping.
The design reduces the frequency of experimenters changing cell scrapers and applying rods, reduces the economic cost and management pressure in the laboratory, and improves experimental efficiency.
Smart Images
Figure CN222795596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biological experiments, in particular to a cell scraper with a smearing function. Background Art
[0002] Cultivating and obtaining cells is a basic operation in cell biology experiments. The experimental process involves the following steps: transferring cells to the culture dish with a pipette, spreading the cells evenly with a smear stick, scraping and collecting cells with a cell scraper, and sucking and transferring cells with a pipette. During the experiment, in order to avoid experimental contamination caused by the replacement of experimental tools, even for the same batch of cell culture, new smear sticks and cell scrapers are required for each cell smearing and cell collection. In order to ensure the smooth progress of each cell culture and collection experiment, the laboratory needs to prepare a large number of smear sticks, cell scrapers and disinfection equipment, which puts great economic pressure and management costs on the laboratory.
[0003] Therefore, we urgently need a new solution to avoid the problems in the above solutions. Utility Model Content
[0004] The utility model aims to provide a cell scraper with a smearing function, so as to solve the problem of high laboratory equipment management cost caused by the single function of the existing cell scraper.
[0005] To achieve the above purpose, the utility model can adopt the following technical scheme: a cell scraper with a smearing function, comprising a knife rod shell and a scraper brush on the outer layer of the cell scraper, wherein the scraper brush is fixedly connected to the lower end of the knife rod shell;
[0006] As a preferred solution of the utility model, it also includes a support structure and a reset structure located inside the cell scraper;
[0007] The support structure includes a support member, a support rod, a second limit block, and a spring; the support member is fixedly connected to the lower end of the support rod, the second limit block is located on the rod body of the support rod, and the spring is sleeved between the support member and the second limit block.
[0008] As a preferred solution of the utility model, the reset structure includes a cam, a pressing block and a guide;
[0009] The guide is fixedly connected to the inner surface of the blade housing, and is provided with second bevel teeth, an outer guide rail and an inner guide rail; the second bevel teeth have 4 teeth, the teeth of the second bevel teeth are separated by the outer guide rail, and the inner surface of each tooth of the second bevel teeth is provided with an inner guide rail;
[0010] One end of the cam is provided with a first bevel tooth, the number of teeth of the first bevel tooth is 4; one end of the pressing block is provided with a sawtooth, the number of teeth of the sawtooth is 8, and a notch is correspondingly provided on the outer side of each tooth structure of the sawtooth; the other end of the pressing block is provided with an extension button;
[0011] In the reset structure, one end of the cam provided with the first bevel tooth is sleeved on the support rod; the other end of the cam passes through the serration structure on the pressing block and is inserted into the pressing block; at this time, the first bevel tooth can engage with the serration; the guide piece is sleeved on the outermost layer of the combined structure formed by the cam and the pressing block, and the notches on the cam are respectively inserted into the corresponding outer guide rails and inner guide rails on the guide piece, so as to maintain the stability of the reset structure; the second bevel tooth on the guide piece can also engage with the serration on the pressing block.
[0012] As a preferred solution of the utility model, a through hole is provided on the blade rod housing, and the position of the through hole corresponds to the position of the extension button on the pressing block; the extension button passes through the through hole to the outside of the cell scraper.
[0013] As a preferred solution of the utility model, the scraper brush is made of a thermoplastic elastomer, a cavity is provided inside the scraper brush, and the support member is provided in the cavity.
[0014] As a preferred solution of the utility model, in the cavity, the distance between the tip of the support member and the inner surface of the tip of the scraper brush is 2-5 mm.
[0015] As a preferred solution of the utility model, a bracket is further provided on the blade rod shell of the cell scraper; a rotating shaft is respectively provided at relative positions on the outer surface of the blade rod shell, and the bracket is rotatably connected to the blade rod shell via the rotating shaft.
[0016] Compared with the prior art, the advantages of the utility model are:
[0017] The utility model is improved on the basis of the traditional cell scraper structure, and a support structure and a reset structure are added inside the traditional cell scraper structure. The reset structure of the utility model can make the support structure extend downward or retract when the experimenter applies pressure to the cell scraper, thereby achieving the effect of freely adjusting the hardness of the scraper brush head. When the support structure is extended, the support member presses against the scraper brush head, and the scraper brush head changes from soft to hard, and the cell scraping operation can be performed at this time; when the support structure retracts, the support member cancels its support force on the scraper brush head, and the scraper brush head changes from hard to soft, and the cell smearing work can be performed at this time.
[0018] The cell scraper of the utility model is also provided with a bracket, which is rotatably connected to the blade rod housing of the cell scraper. The bracket is transferred to one side of the cell scraper and placed on the laboratory table, and the scraper brush head of the cell scraper is tilted upward. The bracket and the blade rod housing form a triangular stable structure, so that the utility model can be placed briefly during the experiment without contaminating the scraper brush head, avoiding the trouble of frequently replacing the cell scraper or smear stick, reducing the work pressure of the experimenter, and improving the experimental efficiency.
[0019] The cell scraper of the utility model has both a cell smearing function and a cell scraping and collecting function, which increases the application scenarios of the cell scraper, avoids the large-scale purchase of smear sticks and cell scrapers with single functions, and greatly reduces the economic cost of the laboratory and the cost of laboratory equipment management. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 This is an exploded view of the structure of the utility model;
[0023] Figure 3 This is a schematic diagram of the positional relationship between the reset structure and the support structure of the utility model;
[0024] Figure 4 This is a schematic diagram of the internal structure of the arbor housing of the utility model;
[0025] Figure 5 It is a structural schematic diagram of the guide member in the reset structure of the utility model;
[0026] Figure 6 It is a structural schematic diagram of the cam in the reset structure of the utility model;
[0027] Figure 7 It is a structural schematic diagram of the pressing block in the reset structure of the utility model;
[0028] Figure 8 It is a schematic diagram of the structure of the utility model in a horizontal position;
[0029] Fig. 9 It is a cross-sectional view of the middle A part;
[0030] In the figure: 1, blade housing; 11, rotating shaft; 12, first stopper; 13, through hole; 2, scraper brush; 21, cavity; 31, support member; 32, support rod; 33, second stopper; 34, spring; 4 cam; 41, first bevel gear; 5, pressing block; 51, extension button; 52, notch; 53, sawtooth; 6, guide member; 61, outer guide rail; 62, second bevel gear; 63, inner guide rail; 7, bracket; DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0032] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.
[0033] The utility model provides Figures 1 to 9 A cell scraper with a smearing function, such as Figure 1 As shown, the cell scraper comprises a knife rod housing 1 and a scraper brush 2 on the outer layer of the cell scraper, and the scraper brush 2 is fixedly connected to the lower end of the knife rod housing 1;
[0034] Furthermore, if Figures 2-3 As shown, it also includes a supporting structure and a resetting structure located inside the cell scraper;
[0035] The support structure includes a support member 31, a support rod 32, a second limit block 33, and a spring 34; the support member 31 is fixedly connected to the lower end of the support rod 32, the second limit block 33 is located on the rod body of the support rod 32, and the spring 34 is sleeved between the support member 31 and the second limit block 33.
[0036] Furthermore, the reset structure includes a cam 4, a pressing block 5 and a guide 6;
[0037] like Figures 4-5 As shown, the guide member 6 is fixedly connected to the inner surface of the arbor housing 1, and is provided with a second bevel tooth 62, an outer guide rail 61 and an inner guide rail 63; the second bevel tooth 62 has 4 teeth, and the teeth of the second bevel tooth 62 are separated by the outer guide rail 61, and an inner guide rail 63 is provided on the inner surface of each tooth of the second bevel tooth 62;
[0038] like Figures 6-7As shown, one end of the cam 4 is provided with a first oblique tooth 41, and the number of teeth of the first oblique tooth 41 is 4; one end of the pressing block 5 is provided with a sawtooth 53, and the number of teeth of the sawtooth 53 is 8, and a notch 52 is correspondingly provided on the outer side of each tooth structure of the sawtooth 53; the other end of the pressing block 5 is provided with an extension button 51;
[0039] In the reset structure, one end of the cam 4 having a first bevel tooth 41 is sleeved on the support rod 32; the other end of the cam 4 passes through the sawtooth 53 structure on the pressing block 5 and is inserted into the pressing block 5; at this time, the first bevel tooth 41 can engage with the sawtooth 53; the guide member 6 is sleeved on the outermost layer of the combined structure formed by the cam 4 and the pressing block 5, and the notch 52 on the cam 4 is respectively inserted into the corresponding outer guide rail 61 and inner guide rail 63 on the guide member 6, so as to maintain the stability of the reset structure; the second bevel tooth 62 on the guide member 6 can also engage with the sawtooth 53 on the pressing block 5.
[0040] Furthermore, if Figures 8-9 As shown, the blade rod housing 1 is provided with a through hole 13, and the position of the through hole 13 corresponds to the position of the extension button 51 on the pressing block 5; the extension button 51 passes through the through hole 13 and leads to the outside of the cell scraper.
[0041] Furthermore, the scraper brush 2 is made of thermoplastic elastomer, and a cavity 21 is provided inside the scraper brush 2 ; the support member 31 is provided in the cavity 21 .
[0042] Furthermore, in the cavity 21, the distance between the tip of the support member 31 and the inner surface of the tip of the scraper brush 2 is 2-5 mm.
[0043] Furthermore, a bracket 7 is provided on the blade housing 1 of the cell scraper; a rotating shaft 11 is provided at respective relative positions on the outer surface of the blade housing 1, and the bracket 7 is rotatably connected to the blade housing 1 via the rotating shaft 11.
[0044] The working principle of the utility model is:
[0045] In the initial state, the first beveled tooth 41 on the cam 4 of the utility model is inserted into the outer guide rail 61 on the guide member 6. At this time, the finger presses the extension button 51 to apply a downward pressure to the pressing block 5, and the pressing block 5 moves along the guide member 6 to press the cam 4 to move downward. When the first beveled tooth 41 on the cam 4 is disengaged from the meshing portion of the outer guide rail 61 of the guide member 6, the sawtooth 53 at the lower end of the pressing block 5 contacts the inclined surface of the first beveled tooth 41 on the cam 4, and the radial force generated forces the cam 4 to rotate, and the first beveled tooth 41 on the cam 4 is The inclined surface in turn engages with the second inclined surface 62 on the guide member 6, and the second limit block 33 moves downward. The second limit block 33 applies pressure to the spring 34, and the first limit block 12 prevents the spring 34 from further moving downward. Under the joint action of the first limit block 12 and the second limit block 33, the spring 34 is deformed and obtains elastic potential energy, the support rod 32 extends downward, and the support member 31 pushes against the top of the scraper brush 2. Under the support of the support member 31, the scraper brush 2 changes from soft to hard, and the cell collection function of the cell scraper can be exerted.
[0046] When the extension button 51 is pressed again, the sawtooth 53 at the lower end of the pressing block 5 is separated from the inclined surface of the first inclined tooth 41 on the cam 4, and the cam 4 rotates under the radial force. The inclined surface of the first inclined tooth 41 on the cam 4 ends the meshing state with the inclined surface of the second inclined tooth 62 on the guide member 6, and the first inclined tooth 41 is re-engaged with the outer guide rail 61 on the guide member 6, and the spring 34 recovers its deformation, and the elastic potential energy is released. The spring 34 pushes the second limit block 33 to move upward, the support rod 32 retracts, and the support member 31 also returns to its initial state. The brush head of the scraper brush 2 becomes soft from hard, and the smearing function of the smear stick can be exerted at this time.
[0047] It should be noted that, in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.
Claims
1. A cell scraper with a smearing function, comprising a knife rod housing (1) and a scraper brush (2) on the outer layer of the cell scraper, wherein the scraper brush (2) is fixedly connected to the lower end of the knife rod housing (1); It is characterized in that Also included are a support structure and a resetting structure located inside the cell scraper; The support structure comprises a support member (31), a support rod (32), a second limit block (33), and a spring (34); the support member (31) is fixedly connected to the lower end of the support rod (32), the second limit block (33) is located on the rod body of the support rod (32), and the spring (34) is sleeved between the support member (31) and the second limit block (33).
2. A cell scraper with smearing function according to claim 1, characterized in that: The resetting structure comprises a cam (4), a pressing block (5) and a guide (6); The guide member (6) is fixedly connected to the inner surface of the blade rod housing (1), and is provided with a second bevel tooth (62), an outer guide rail (61) and an inner guide rail (63); the second bevel tooth (62) has four teeth, and the teeth of the second bevel tooth (62) are separated by the outer guide rail (61); and an inner guide rail (63) is provided on the inner surface of each tooth of the second bevel tooth (62); One end of the cam (4) is provided with a first oblique tooth (41), the number of teeth of the first oblique tooth (41) being 4; one end of the pressing block (5) is provided with a saw tooth (53), the number of teeth of the saw tooth (53) being 8, and a notch (52) is correspondingly provided on the outer side of each tooth structure of the saw tooth (53); the other end of the pressing block (5) is provided with an extension button (51); In the reset structure, one end of the cam (4) provided with a first oblique tooth (41) is sleeved on the support rod (32); the other end of the cam (4) passes through the sawtooth (53) structure on the pressing block (5) and is inserted into the pressing block (5); the first oblique tooth (41) can mesh with the sawtooth (53); the guide member (6) is sleeved on the outermost layer of the combined structure formed by the cam (4) and the pressing block (5), and the notch (52) on the cam (4) is respectively inserted into the corresponding outer guide rail (61) and inner guide rail (63) on the guide member (6), so as to maintain the stability of the reset structure; the second oblique tooth (62) on the guide member (6) can also mesh with the sawtooth (53) on the pressing block (5).
3. The cell scraper with smearing function according to claim 1, characterized in that: The blade rod housing (1) is provided with a through hole (13), the position of the through hole (13) corresponds to the position of the extension button (51) on the pressing block (5); the extension button (51) passes through the through hole (13) and leads to the outside of the cell scraper.
4. The cell scraper with smearing function according to claim 1, characterized in that: The scraper brush (2) is made of a thermoplastic elastomer, and a cavity (21) is provided inside the scraper brush (2); the support member (31) is arranged in the cavity (21).
5. The cell scraper with smearing function according to claim 4, characterized in that: In the cavity (21), the distance between the tip of the support member (31) and the inner surface of the tip of the scraper brush (2) is 2-5 mm.
6. The cell scraper with smearing function according to claim 1, characterized in that: The blade rod housing (1) of the cell scraper is also provided with a bracket (7); a rotating shaft (11) is respectively provided at relative positions on the outer surface of the blade rod housing (1), and the bracket (7) is rotatably connected to the blade rod housing (1) via the rotating shaft (11).