Pressing type quantitative dropper

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a pressing type quantitative dropper, in the pressing type quantitative dropper, a main pipe body, a soft rubber connecting piece and a pressing piece are integrally formed through injection molding (such as double-color mold injection molding), the pressing piece and the main pipe body are connected through the soft rubber connecting piece, and elastic force for resetting after pressing is provided for the pressing piece every time; according to the design, the pressing piece and the main pipe body are connected without assembling, welding and the like, the structure is simple, the production and manufacturing process is simplified, and machining and manufacturing are convenient.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a press-type quantitative dropper. Background Technology

[0002] In biological or medical testing, personnel typically use reagent tubes to store and transfer reagents or liquid samples, adding them into the reagent to be tested for analysis. To further ensure the accuracy of test results, personnel mostly use reagent tubes capable of quantitative pipetting to transfer reagents or samples quantitatively. Most existing quantitative pipetting reagent tubes achieve single-volume dispensing by squeezing vesicles. Because the vesicles are made of elastic, deformable material, while the tube body is made of rigid plastic, the connection between the vesicles and the tube body is usually achieved using sealing rings, caps, and other components, resulting in a complex structure that is inconvenient to manufacture and assemble. Utility Model Content

[0003] This application provides a press-type quantitative dropper to solve the problem that the connection structure between the vesicle and the tube body in existing quantitative pipettes is relatively complex, making it inconvenient to manufacture and assemble.

[0004] To achieve the above objectives, this application provides a press-type metering dropper, comprising:

[0005] Drip tip assembly; and

[0006] The tube assembly includes a main tube, a soft rubber connector, and a pressing component. The first end of the main tube is detachably connected to the dripping head assembly. The pressing component is disposed at the second end of the main tube via the soft rubber connector. The main tube, the soft rubber connector, and the pressing component are integrally injection molded. During the pressing process, the soft rubber connector undergoes elastic deformation, causing the pressing component to move into the main tube, thereby compressing the space inside the main tube.

[0007] Optionally, the pressing member includes a plug located inside the main body, a force-applying part located outside the main body, and a connecting part connecting the plug and the force-applying part. The size of the connecting part is smaller than the inner diameter of the second end, and the size of the force-applying part is larger than the inner diameter of the second end.

[0008] Optionally, the soft rubber connector includes a cylindrical body and an annular connecting piece connected to one end of the cylindrical body. The cylindrical body is sleeved and fixed to the outer peripheral wall of the second end. The annular connecting piece is located at the axial end of the second end, and the middle part of the annular connecting piece is fixedly connected to the pressing member.

[0009] Optionally, the outer peripheral wall of the second end is provided with a first groove, and the inner wall of the cylinder is provided with a first protrusion corresponding to the first groove; and / or, the axial end of the second end is provided with a second groove, and the annular connecting piece is provided with a second protrusion corresponding to the second groove.

[0010] Optionally, both the main body and the pressing element are made of polypropylene or polyethylene.

[0011] Optionally, the soft rubber connector is made of thermoplastic polyurethane elastomer.

[0012] Optionally, the dripping head assembly includes:

[0013] A dripper, detachably disposed at the first end and having a liquid outlet channel for communication with the interior of the main body; and

[0014] A protective cap is detachably mounted on the dropper and used to block the liquid outlet channel.

[0015] Optionally, the bottom wall of the protective cover is provided with a sealing body for extending into the liquid outlet channel.

[0016] Optionally, the dripper includes a first connecting part, a main body, a second connecting part, and a liquid outlet part connected in sequence. The first connecting part is sleeved on the outside of the first end and detachably connected to the first end. The second connecting part is used to detachably connect to the protective cover. The liquid outlet channel includes an inlet section located inside the main body and communicating with the interior of the main body, an outlet section located inside the second connecting part and the outlet part, and a conical transition section located inside the main body and communicating with the inlet section and the outlet section.

[0017] Optionally, the outer wall of the liquid outlet is provided with a plurality of grooves along the circumferential direction, and the grooves extend along the length direction of the liquid outlet.

[0018] The beneficial effects of the press-type quantitative dropper provided in this application are as follows: Compared with the prior art, in the press-type quantitative dropper of this application, the main body, the soft rubber connector and the press component are integrally injection molded (such as two-color mold injection molding). The soft rubber connector is used to realize the connection between the press component and the main body and to provide the press component with the elastic force to reset after each press. With this design, the press component and the main body do not need to be connected by assembly, welding or other methods. The structure is simple, the manufacturing process is simplified, and the processing and manufacturing are convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the overall structure of a press-type metering dropper shown in one embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the exploded structure of a press-type metering dropper according to an embodiment of this application;

[0023] Figure 3 This is a cross-sectional view of the tube assembly in a press-type metering dropper according to an embodiment of this application;

[0024] Figure 4 This is a cross-sectional view of the connection between the first end of the main tube and the dropper assembly in an embodiment of the press-type quantitative dropper shown in this application;

[0025] Figure 5 This is a schematic cross-sectional view of the dispenser assembly after separation in a press-type quantitative dropper according to an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the structure of the dropper in the dropper assembly shown in one embodiment of this application.

[0027] Explanation of key component symbols:

[0028] 100. Dropper assembly;

[0029] 110. Dropper; 111. First connecting part; 112. Main body; 113. Second connecting part; 114. Liquid outlet; 1141. Groove; 1101. Liquid outlet channel; 11011. Liquid inlet section; 11012. Liquid outlet section; 11013. Conical transition section;

[0030] 120. Protective cover; 121. Sealing body;

[0031] 200. Pipe body assembly;

[0032] 210. Main body; 211. First end; 212. Second end;

[0033] 220. Soft rubber connector; 221. Cylinder body; 222. Annular connecting piece;

[0034] 230. Pressing part; 231. Plug; 232. Force-applying part; 233. Connecting part. Detailed Implementation

[0035] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0040] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0041] Embodiments of this application provide a press-type metering dropper, such as... Figures 1-3As shown, the press-type metering dropper includes a dropper assembly 100 and a tube body assembly 200. The tube body assembly 200 includes a main tube body 210, a soft rubber connector 220, and a pressing member 230. The two ends of the main tube body 210 in the axial direction are a first end 211 and a second end 212, respectively. The first end 211 of the main tube body 210 is detachably connected to the dropper assembly 100. The pressing member 230 is disposed at the second end 212 of the main tube body 210 through the soft rubber connector 220. The main tube body 210, the soft rubber connector 220, and the pressing member 230 are integrally injection molded. During the pressing process of the pressing member 230, the soft rubber connector 220 undergoes elastic deformation, so that the pressing member 230 moves into the main tube body 210, thereby compressing the space inside the main tube body 210.

[0042] In this embodiment, the tube assembly 200 of the press-type quantitative dropper is integrally injection molded (e.g., two-color injection molding) with the main tube body 210, the soft rubber connector 220, and the press component 230. The soft rubber connector 220 is used to connect the press component 230 to the main tube body 210 and to provide the press component 230 with the elastic force to reset after each press. With this design, the press component 230 and the main tube body 210 do not need to be connected by assembly, welding, or other methods. The structure is simple, the manufacturing process is simplified, and the processing is convenient.

[0043] In one embodiment, such as Figure 3 As shown, the pressing member 230 includes a plug 231 located inside the main body 210, a force-applying part 232 located outside the main body 210, and a connecting part 233 connecting the plug 231 and the force-applying part 232. The size of the connecting part 233 is smaller than the inner diameter of the second end 212, and the size of the force-applying part 232 is larger than the inner diameter of the second end 212.

[0044] As set above, the size of the connecting part 233 is smaller than the inner diameter of the second end 212, so it does not affect the movement of the connecting part 233 into the main body 210 during the pressing process. The size of the force-applying part 232 is larger than the inner diameter of the second end 212, so that during the pressing of the force-applying part 232, the force-applying part 232 abuts against the axial part of the second end 212 of the main body 210, which plays a limiting role and ensures the accuracy of each drip volume.

[0045] In one embodiment, such as Figure 3 As shown, the soft rubber connector 220 includes a cylindrical body 221 and an annular connecting piece 222 connected to one end of the cylindrical body 221. The cylindrical body 221 is sleeved and fixed to the outer peripheral wall of the second end 212. The annular connecting piece 222 is located at the axial end of the second end 212. The middle part of the annular connecting piece 222 is fixedly connected to the pressing member 230.

[0046] Furthermore, to improve the reliability and strength of the connection between the soft rubber connector 220 and the second end 212 of the main body 210, the outer peripheral wall of the second end 212 of the main body 210 is provided with a first groove, and the inner wall of the cylinder 221 is provided with a first protrusion corresponding to the first groove; and / or, the axial end of the second end 212 is provided with a second groove, and the annular connecting piece 222 is provided with a second protrusion corresponding to the second groove.

[0047] The number of the first and second slots can be set to multiple, and they are evenly arranged along the circumference of the main body 210.

[0048] In one embodiment, both the main body 210 and the pressing member 230 are made of polypropylene (PP) or polyethylene (PE). These materials facilitate the integral injection molding of the main body 210 and the pressing member 230. In this embodiment, the materials of both the main body 210 and the pressing member 230 are preferably polypropylene.

[0049] The soft rubber connector 220 is made of thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber (TPU). This material makes it easy for the tester to apply force to the pressing part 230 so that the soft rubber connector 220 can undergo elastic deformation. It also makes it easy for the pressing part 230 to quickly return to its original shape under the action of the soft rubber connector 220 after the force is removed so that it can be pressed again.

[0050] In one embodiment, such as Figures 1-2 and Figures 4-5 As shown, the dripper assembly 100 includes a dripper 110 and a protective cap 120. The dripper 110 is detachably disposed on the first end 211 of the main pipe body 210 and has a liquid outlet channel 1101 for communicating with the interior of the main pipe body 210. The protective cap 120 is detachably disposed on the dripper 110 and is used to block the liquid outlet channel 1101.

[0051] In actual use, the testing personnel first remove the dropper assembly 100 (i.e., dropper 110 and protective cap 120) from the first end 211 of the main body 210, put the reagent and / or sample into the main body 210, then install the dropper assembly 100, open the protective cap 120 on the dropper 110, place the dropper 110 vertically downward, and press the presser 230 to squeeze out a quantitative liquid.

[0052] In one specific embodiment, such as Figures 4-5 As shown, a sealing body 121 for extending into the liquid outlet channel 1101 is provided on the bottom wall of the protective cover 120.

[0053] Specifically, the sealing body 121 is cylindrical, and the diameter of the end of the sealing body 121 away from the bottom wall of the protective cover 120 is smaller than the diameter of the end near the bottom wall of the protective cover 120. This design facilitates the insertion of the sealing body 121 into the liquid outlet channel 1101. The sealing body 121 and the liquid outlet channel 1101 are interference-fitted to ensure the sealing performance of the sealing body 121 to the liquid outlet channel.

[0054] In one specific embodiment, such as Figures 4-6 As shown, the dripper 110 includes a first connecting part 111, a main body 112, a second connecting part 113, and a liquid outlet 114 connected in sequence. The interiors of the three parts together form a liquid outlet channel 1101. The first connecting part 111 is sleeved on the outside of the first end 211 and is detachably connected to the first end 211. The second connecting part 113 is used to detachably connect to the protective cover 120. The liquid outlet channel 1101 includes an inlet section 11011 located inside the main body 112 and communicating with the interior of the main tube 210, an outlet section 11012 located inside the second connecting part 113 and the outlet section 114, and a conical transition section 11013 located inside the main body 112 and communicating with the inlet section 11011 and the outlet section 11012.

[0055] Specifically, an internal thread is formed on the inner wall of the first connecting part 111, and an external thread adapted to the internal thread is formed on the outer wall of the first end 211 of the main body 210, thereby realizing a detachable connection between the first connecting part 111 and the main body 210. The structure is simple and the connection is reliable. Similarly, an internal thread is formed on the inner wall of the protective cover 120, and an external thread adapted to the internal thread is formed on the outer wall of the second connecting part 113, thereby realizing a detachable connection between the protective cover 120 and the dropper 110. When no liquid transfer operation is performed, the protective cover 120 covers the liquid outlet 114 of the dropper 110 to prevent the liquid outlet 114 from being accidentally damaged due to external reasons (such as being dropped on the ground and impacted). When a liquid transfer operation is performed, the protective cover 120 is removed from the dropper 110 to expose the liquid outlet 114, and then the liquid to be transferred and / or tested is dripped out by pressing the pressing member 230.

[0056] In addition, it should be noted that currently, the internal channel of the dripper 110 is usually cylindrical, which is not conducive to the flow of liquid under gravity. In this embodiment, a conical transition section 11013 is used to connect the inlet section 11011 and the outlet section 11012, which increases the fluidity of liquid to the outlet section 11012 under gravity.

[0057] In one embodiment, such as Figure 6 As shown, at least one groove 1141 is provided on the outer wall of the liquid outlet section 114 in the dripper 110, and the groove 1141 extends along the length direction of the liquid outlet section 114.

[0058] By setting the groove 1141, when the liquid outlet 114 is inserted into the sealed container, the groove 1141 on the outer wall of the liquid outlet 114 enables the exchange of gas between the inside of the container and the outside, ensuring the smoothness and reliability of sample addition.

[0059] Specifically, there can be multiple grooves 1141, which are evenly spaced along the outer wall of the liquid outlet 114.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A press-type metering dropper, characterized in that, include: Dropper assembly (100); as well as The tube assembly (200) includes a main tube body (210), a soft rubber connector (220), and a pressing member (230). The first end (211) of the main tube body (210) is detachably connected to the dripping head assembly (100). The pressing member (230) is disposed at the second end (212) of the main tube body (210) through the soft rubber connector (220). The main tube body (210), the soft rubber connector (220), and the pressing member (230) are integrally injection molded. During the pressing of the pressing member (230), the soft rubber connector (220) undergoes elastic deformation, causing the pressing member (230) to move into the main tube body (210), thereby compressing the space inside the main tube body (210).

2. The press-type metering dropper according to claim 1, characterized in that, The pressing member (230) includes a plug (231) located inside the main body (210), a force-applying part (232) located outside the main body (210), and a connecting part (233) connecting the plug (231) and the force-applying part (232). The size of the connecting part (233) is smaller than the inner diameter of the second end (212), and the size of the force-applying part (232) is larger than the inner diameter of the second end (212).

3. The press-type metering dropper according to claim 1, characterized in that, The soft rubber connector (220) includes a cylindrical body (221) and an annular connecting piece (222) connected to one end of the cylindrical body (221). The cylindrical body (221) is sleeved and fixed on the outer peripheral wall of the second end (212). The annular connecting piece (222) is located at the axial end of the second end (212). The middle part of the annular connecting piece (222) is fixedly connected to the pressing member (230).

4. The press-type metering dropper according to claim 3, characterized in that, The outer peripheral wall of the second end (212) is provided with a first groove, and the inner wall of the cylinder (221) is provided with a first protrusion corresponding to the first groove; and / or, the axial end of the second end (212) is provided with a second groove, and the annular connecting piece (222) is provided with a second protrusion corresponding to the second groove.

5. The press-type metering dropper according to claim 1, characterized in that, Both the main body (210) and the pressing element (230) are made of polypropylene or polyethylene.

6. The press-type metering dropper according to claim 1, characterized in that, The soft rubber connector (220) is made of thermoplastic polyurethane elastomer.

7. The press-type metering dropper according to any one of claims 1-6, characterized in that, The dripping head assembly (100) includes: A dripper (110), detachably disposed at the first end (211) and having a liquid outlet channel (1101) for internal communication with the main body (210); and A protective cap (120) is detachably mounted on the dropper (110) and used to block the liquid outlet channel (1101).

8. The press-type metering dropper according to claim 7, characterized in that, The bottom wall of the protective cover (120) is provided with a sealing body (121) for extending into the liquid outlet channel (1101).

9. The press-type metering dropper according to claim 7, characterized in that, The dripper (110) includes a first connecting part (111), a main body (112), a second connecting part (113), and a liquid outlet (114) connected in sequence. The first connecting part (111) is sleeved on the outside of the first end (211) and detachably connected to the first end (211). The second connecting part (113) is used to detachably connect to the protective cover (120). The liquid outlet channel (1101) includes an inlet section (11011) located inside the main body (112) and communicating with the interior of the main body (210), an outlet section (11012) located inside the second connecting part (113) and the outlet section (114), and a conical transition section (11013) located inside the main body (112) and communicating with the inlet section (11011) and the outlet section (11012).

10. The press-type metering dropper according to claim 9, characterized in that, The outer wall of the liquid outlet (114) is provided with a plurality of grooves (1141) along the circumferential direction, and the grooves (1141) extend along the length direction of the liquid outlet (114).

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