Pull straw storage device for Pasteur straws
By designing a partitioned placement rack and a limiting clamping structure for the storage of pulled straws, the problem of fragments scattering and being classified and stored during the pulling process of glass straws was solved, achieving safe and efficient straw operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing technology, glass Pasteur straws are prone to breakage and fragmentation during the drawing process, and lack a sorting and storage device, resulting in operational safety hazards and low efficiency.
A straw storage device was designed, which includes a rack, a collection tray, and an alcohol lamp. Through partition design and limiting clamping structure, it enables classified storage of straws, safe and efficient straw pulling operation, prevents fragments from scattering and contamination, and improves work efficiency.
It significantly improves the safety and efficiency of the Pasteur straw pulling operation, prevents fragments from scattering, avoids contamination, and enhances the convenience of straw classification, storage, and management.
Smart Images
Figure CN224117908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a pull-out storage device for Pasteur straws. Background Technology
[0002] Assisted reproductive technology refers to medical techniques that use medical means to intervene in gametes, zygotes, and embryos to help infertile couples achieve their goal of having children. In assisted reproductive technology, the in vitro manipulation of eggs or embryos is one of the key steps. Each step of the in vitro manipulation of eggs or embryos must be performed using disposable Pasteur pipettes of appropriate diameter to ensure the accuracy and safety of the operation.
[0003] Pasteur pipettes, also known as Pasteur pipettes or transfer pipettes, are commonly used laboratory pipetting tools, primarily for the aspiration, transfer, or transport of small amounts of liquid. Pasteur pipettes are typically made of polyethylene or glass. Glass Pasteur pipettes are mainly used in experiments requiring high precision or high temperature resistance, such as those used in in vitro fertilization (IVF) and other embryo manipulation procedures, which are often made of borosilicate glass or soda-lime glass. In in vitro oocyte or embryo manipulation, when using glass Pasteur pipettes, the glass tube needs to be softened by heating with an alcohol lamp, and then stretched to form a suitable diameter tube to meet the needs of different experimental steps. However, due to the brittleness of glass, when heated with an alcohol lamp flame, uneven or excessively high local temperatures can cause stress due to inconsistent thermal expansion, leading to the glass tube breaking or shattering. Furthermore, excessively rapid stretching or uneven force during operation can also cause the glass tube to break, producing glass fragments. However, most reproductive centers currently use ordinary trays to hold alcohol lamps for drawing Pasteur straws, mixing the alcohol lamps with the glass tubes produced during the drawing process. The drawn straws need to be stored on supports or trays, and the glass shards can easily injure the operators' hands when cleaning up the broken glass after drawing, posing a serious safety hazard. There is a lack of integrated temporary storage devices, making it impossible to classify and store straws of different sizes, which is not conducive to experimental operations and affects work efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a storage device for Pasteur straws that can be classified and stored safely, efficiently, and easily cleaned, thereby effectively improving work efficiency. This device solves the technical problems of glass fragments, alcohol lamps, and straws being mixed together during the straw-pulling process, posing operational safety hazards, lacking a device for classifying and storing properly pulled Pasteur straws, resulting in inconvenient management and low efficiency.
[0005] To solve the above technical problems, the solution adopted by this utility model is as follows:
[0006] A storage device for Pasteur straws includes a rack, a collection tray, and an alcohol lamp; the rack includes an A section, a B section, and a separating section; the left side of the B section is the A section; the front side of the A and B sections is the separating section; the A section has a placement hole; the B section has a round support; the alcohol lamp is connected to the B section through the round support; the separating section has a placement slot; and the collection tray is placed in the placement slot of the rack. When using, light the alcohol lamp on the round holder in section B, take out the Pasteur pipette, and heat the thin end over the outer flame of the alcohol lamp. After the glass softens, use tweezers or other tools to hold the softened part and horizontally stretch the thin end of the Pasteur pipette to elongate the tip and narrow the diameter. When the pipette is stretched to the appropriate diameter, use an external grinding wheel or similar tool to grind the test tube on the collection tray above it to facilitate cutting off the unstretched section at the front end of the test tube. Collect the glass fragments generated during the breaking process through the collection tray. If the diameter of the pipette being stretched does not meet the requirements, it can be cut off and placed directly in the collection tray. Then, repeat the pipette stretching process. If you need to make or remove a new Pasteur straw for drawing, or if the cut of the straw is uneven, it needs to be recut. Discard the waste Pasteur straw directly into the collection tray. The drawn Pasteur straw can be placed in the placement hole in area A for easy retrieval and use later. After drawing the required Pasteur straw, the collection tray can be removed from the placement slot. Pour the waste glass tubes and fragments into the sharps box for easy disposal later and avoid the risk of punctures that may occur during the cleaning process. The diameter and depth of the placement hole are adapted to the drawn straw, which can hold the straw firmly and prevent it from rolling or tipping over.
[0007] Furthermore, area A is provided with a sealing cover; the sealing cover is hinged to the rear side of area A; the sealing cover includes a silicone sealing strip and a lever; the silicone sealing strip is fixedly installed at the bottom end of the sealing cover; the lever is fixedly installed on the outer front side of the sealing cover. Opening the sealing cover hinged to area A with the lever exposes the placement hole inside area A, making it convenient for operators to retrieve the straw. When the sealing cover is closed, due to gravity, the silicone sealing strip can tightly fit the placement hole in area A, forming a good sealing effect, preventing dust or impurities from entering the placement hole and protecting the straw from contamination. The lever allows operators to easily open and close the sealing cover by flicking it with their fingers.
[0008] Furthermore, the placement holes consist of eight by six circular holes, each 1.5 cm in diameter, with the depth gradually increasing from left to right. Depending on the experimental requirements, different diameters and capacities of Pasteur straws are drawn, resulting in straws of varying lengths. The placement holes of different depths allow for the categorized placement of drawn and undrawn Pasteur straws of different capacities, preventing confusion during operation, facilitating retrieval, and effectively improving overall work efficiency.
[0009] Furthermore, the collection tray is equipped with a limiting clamp, a limiting pin, and an insertion hole; the limiting clamp includes a supporting clamp and a fixing clamp; two limiting pins are provided and are fixedly installed at the bottom of both ends of the fixing clamp; the insertion hole is opened on both sides of the middle of the collection tray and matches the limiting pin; one end of the supporting clamp and the fixing clamp are hinged to each other; two brackets are provided and are respectively installed on the left and right sides of the collection tray. The brackets are at the same height as the fixing clamps, and the fixing clamps are fixed to the collection tray by the limiting pins at the bottom to prevent the limiting clamps from shifting due to external force. When performing the tube pulling operation, the heated and softened straw is quickly placed on the fixing clamp, and the straw is pressed down by the supporting clamp to clamp the straw. The other end is placed on the bracket, and the straw is pulled manually. The bracket and the fixing clamp can keep the straw balanced and prevent the straw from shaking or shifting during the pulling process.
[0010] Furthermore, the supporting clamp and the fixing clamp are symmetrically provided with arc grooves; a grinding wheel blade is provided in the arc groove; one end of the supporting clamp and the fixing clamp is connected by a spiral spring. When no external force is applied, the supporting clamp and the fixing clamp are in a closed state. When performing the tube pulling operation, the supporting clamp is opened by external force, the straw is placed on the fixing clamp, the supporting clamp is released, and it springs back to fix and clamp the test tube. If necessary, the supporting clamp can be manually pressed to further clamp the straw. After the tube pulling is completed, the straw is allowed to cool down; the supporting clamp is opened by external force, and the cooled straw is moved into the arc groove of the fixing clamp. Then the supporting clamp is released, so that the arc groove of the supporting clamp and the arc groove on the fixing clamp are closed. The grinding wheel blade inside the arc groove has a certain curvature, which can fit and grind Pasteur straws of different diameters, making it convenient for cutting. The cut fragments fall into the collection tray. At the same time, the cut straw needs to be inspected under a microscope to ensure the flatness of the cut.
[0011] Furthermore, the collection tray is provided with handles on both sides. The handles are symmetrically installed on both sides of the collection tray, which facilitates operation with both hands. By holding the handles with both hands, the collection tray can be taken out or put back from the partition area of the placement rack without direct contact with the surface of the collection tray, thus avoiding the risk of accidental injury and preventing the placement tray from falling into the placement slot.
[0012] The working principle of this utility model is as follows:
[0013] To use, light the alcohol lamp on the round holder in area B, take out the Pasteur pipette, and heat the thin end over the outer flame of the alcohol lamp. After the glass softens, open the support clip with external force, quickly place the pipette on the fixed clip, and release the support clip. The support clip will spring back under the force of the spiral spring, clamping the softened part of the pipette. Place the other end of the pipette on the bracket, and stretch the thin end of the Pasteur pipette horizontally through the bracket and the fixed clip to lengthen the tip and narrow the diameter. When stretched to the appropriate diameter, wait for the test tube to cool, open the support clip, place the test tube in the arc groove of the support clip and the fixed clip, release the support clip, and cut the test tube with the grinding wheel blade in the arc groove. Collect the glass fragments generated during the cutting process and the unstretched pipette ends through the collection tray. Open the sealing cap in area A, sort and place the stretched Pasteur pipettes in the placement holes, and close the sealing cap. After stretching the pipette, remove the collection tray from the placement groove through the handle, and pour the collected glass fragments into the sharps box for later processing.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. This utility model significantly improves the safety, efficiency, and convenience of the Pasteur straw pulling operation through reasonable partitioning and functional design. Section A is used to classify and store straws to avoid test tubes being placed haphazardly. Section B is used to stably support the alcohol lamp to ensure the accuracy of the straw pulling operation. The collection tray on the partitioned area can effectively collect glass fragments generated during the straw pulling process, preventing fragments from scattering and causing the risk of punctures. The overall structure is simple and easy to disassemble and clean.
[0016] 2. The sealing cap in area A of this utility model can effectively prevent dust and impurities from contaminating the straw, and the lever allows operators to quickly open and close the cap. The handles on both sides of the collection tray can effectively prevent the collection tray from falling into the placement groove, making it easy for operators to remove the collection tray and handle glass fragments, avoiding hand contact with the inside of the collection tray and reducing the risk of accidental injury.
[0017] 3. This utility model can keep the straw stable during the pulling process by using a limiting clamp and bracket, which can effectively prevent the straw from shaking or shifting during the pulling process. The grinding wheel blade on the arc groove can quickly cut off the excess or waste straw end, thus effectively improving the overall working efficiency of the straw pulling process. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0019] Figure 2 This is a top view of the placement rack of this utility model;
[0020] Figure 3 This is a schematic diagram of the collecting tray structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the limiting clamp structure of this utility model.
[0022] In the diagram: 1. Placement rack; 11. Area A; 111. Placement hole; 112. Sealing cap; 113. Silicone sealing strip; 114. Paddle; 12. Area B; 121. Round support; 13. Dividing area; 131. Placement groove; 2. Collection tray; 21. Limiting clamp; 22. Limiting pin; 23. Insertion hole; 24. Supporting clamp; 25. Fixing clamp; 26. Arc groove; 27. Grinding wheel blade; 28. Spiral spring; 29. Ear handle; 3. Alcohol lamp; 4. Bracket. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0025] The following is a detailed description of a pull-out straw storage device for Pasteur straws according to the present invention, with reference to the accompanying drawings:
[0026] Example 1: A storage device for Pasteur straws, comprising a rack 1, a collection tray 2, and an alcohol lamp 3; the rack 1 includes an A section 11, a B section 12, and a dividing section 13; the left side of the B section 12 is the A section 11; the front side of the A section 11 and the B section 12 is the dividing section 13; the A section 11 has a placement hole 111; the B section 12 has a round support 121; the alcohol lamp 3 is connected to the B section 12 through the round support 121; the dividing section 13 has a placement groove 131; the collection tray 2 is connected to the rack 1 through the placement groove 131.
[0027] The working principle of this embodiment is as follows:
[0028] In use, light the alcohol lamp 3 on the round holder 121 in area B, take out the Pasteur pipette, place the thin end on the outer flame of the alcohol lamp 3 to heat it, and after the glass softens, use external tweezers or other tools to hold the softened part and stretch the thin end of the Pasteur pipette horizontally to lengthen the tip and narrow the diameter. When the pipette is stretched to a suitable diameter, use a tool to cut the test tube above the collection tray 2. Collect the glass fragments and waste Pasteur pipette ends generated during the cutting process through the collection tray 2. The stretched Pasteur pipette can be placed in the placement hole 111 in area A. After the pipette is stretched, the collection tray 2 can be removed from the placement slot 121, and the waste glass tubes and fragments in the collection tray 2 can be poured into the sharps box for processing.
[0029] Example 2: The difference from Example 1 is that area A 11 is provided with a sealing cover 112; the sealing cover 112 is hinged to the rear side of area A 11; the sealing cover 112 includes a silicone sealing strip 113 and a paddle 114; the silicone sealing strip 113 is fixedly installed at the bottom end of the sealing cover 112; the paddle 114 is fixedly installed on the outer front side of the sealing cover 112; the placement hole 111 consists of eight by six circular holes with a diameter of 1.5cm, and the depth gradually increases from left to right;
[0030] After pulling the Pasteur pipette into place, lift the sealing cap 112 using the lever 114. Place the Pasteur pipettes into the placement holes 111 of different depths in area A 11 according to their capacity and length for easy retrieval later. After placing the Pasteur pipettes, close the sealing cap 112. The silicone sealing strip 113 at the bottom of the sealing cap 112 will ensure that the sealing cap 112 and the top of area A 11 fit together, preventing dust or impurities from entering and contaminating the pipettes, thus affecting the experimental results.
[0031] The working principle of this embodiment is the same as that of Embodiment 1.
[0032] Example 3: The difference from Example 2 is that the collection tray 2 is provided with a limiting clamp 21, a limiting pin 22, and an insertion hole 23; the limiting clamp includes a supporting clamp 24 and a fixing clamp 25; there are two limiting pins 22, which are fixedly installed at the bottom of both ends of the fixing clamp 25; the insertion hole 23 is opened on both sides of the middle part of the collection tray 2 and matches the limiting pin 22; one end of the supporting clamp 24 and the fixing clamp 25 is connected by a spiral spring 28; there are two brackets, which are respectively installed on the left and right sides of the collection tray; the supporting clamp 24 and the fixing clamp 25 are symmetrically provided with arc grooves 26; the arc grooves 26 are provided with grinding wheel blades 27; the collection tray 2 is provided with ear handles 29 on both sides.
[0033] The limiting clamp 21 is inserted into the insertion hole 23 in the collection tray 2 through the limiting pin 22 at the bottom of the fixing clamp 25. The supporting clamp 24 is opened by external force, and the straw is placed on the fixing clamp 25. The supporting clamp 24 is released, and the supporting clamp 23 is rebounded by the force of the spiral spring to fix the thin end of the straw. The other end of the straw is placed on the bracket 4, and the straw is pulled manually. After the straw is pulled, the straw is cooled, the supporting clamp 24 of the limiting clamp 21 is opened, and the thin end of the straw that has not been pulled is placed in the arc groove 26. The supporting clamp 24 is released, and the straw is cut by the grinding wheel blade 27 in the arc groove 26. The glass fragments and the cut thin end of the straw generated during the cutting process are collected by the collection tray 2. After the straw is pulled, the ear handles 29 on both sides of the collection tray 2 are removed from the placement groove 131, and the limiting clamp is removed from the collection tray 2 for easy disposal of the glass fragments generated during the straw pulling.
[0034] The working principle of this embodiment is the same as that of embodiment 2.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for storing pull-out straws for Pasteur straws, characterized in that: The device includes a placement rack (1), a collection tray (2), and an alcohol lamp (3); the placement rack (1) includes an A zone (11), a B zone (12), and a partition zone (13); the B zone (12) is located to the left of the A zone (11); the partition zone (13) is located in front of the A zone (11) and the B zone (12); the A zone (11) has a placement hole (111); the B zone (12) has a round support (121); the alcohol lamp (3) is connected to the B zone (12) through the round support (121); the partition zone (13) has a placement slot (131); the collection tray (2) is placed in the placement slot (131) of the placement rack (1).
2. The straw storage device for Pasteur straws according to claim 1, characterized in that: The A area (11) is provided with a sealing cover (112); the sealing cover (112) is hinged to the rear side of the A area (11); the sealing cover (112) includes a silicone sealing strip (113) and a paddle (114); the silicone sealing strip (113) is fixedly installed at the bottom end of the sealing cover (112); the paddle (114) is fixedly installed on the outer front side of the sealing cover (112).
3. A straw storage device for Pasteur straws according to claim 1 or 2, characterized in that: The placement hole (111) consists of eight by six circular holes, with the depth gradually increasing from left to right.
4. A straw storage device for Pasteur straws according to claim 1, characterized in that: The collection tray (2) is provided with a limiting clamp (21), a limiting pin (22), a socket (23), and a bracket (4); the limiting clamp includes a supporting clamp (24) and a fixing clamp (25); there are two limiting pins (22), which are fixedly installed at the bottom of both ends of the fixing clamp (25); the socket (23) is opened on both sides of the middle part of the collection tray (2) and matches the limiting pin (22); one end of the supporting clamp (24) and the fixing clamp (25) are hinged to each other; there are two brackets (4), which are respectively installed on the left and right sides of the collection tray (2).
5. A straw storage device for Pasteur straws according to claim 4, characterized in that: The support clamp (24) and the fixed clamp (25) are symmetrically provided with arc grooves (26); the arc grooves (26) are provided with grinding wheel blades (27); one end of the support clamp (24) and the fixed clamp (25) are connected by a spiral spring (28).
6. A straw storage device for Pasteur straws according to claim 1, characterized in that: The collection tray (2) is provided with ear handles (29) on both sides.