A laboratory eggshell punch for collecting eggshell for testing egg white samples

Abstract

The utility model relates to a laboratory detection egg white sample collection eggshell puncher, include: carrier, carrier presents the cylindrical setting, and carrier one end is equipped with the arc recess, is equipped with the sliding slot to the carrier, and the sliding slot is perpendicular to the axis of carrier, and the arc recess is linked together with the sliding slot, sliding strip, slidingly sets up in the sliding slot inside, is equipped with a plurality of placing cavities on the sliding strip, and the opening of placing cavity faces the arc recess, a plurality of needle holder, respectively slidingly set up in the placing cavity inside, a plurality of puncture needle, respectively fixedly set up in each needle holder one end near the arc recess, lifting subassembly, set up on the carrier for lifting needle holder to make puncture needle pass through the sliding slot to the arc recess inside. Through many puncture needle + sliding strip switching realizes one egg one needle, and the puncture needle is completely stored in the placing cavity when not lifting, avoids needle head mixed use residual or external pollution.

Description

Technical Field

[0001] This utility model belongs to the field of egg white sample collection technology, specifically relating to an eggshell hole punch for collecting egg white samples for laboratory testing. Background Technology

[0002] In the field of laboratory egg white sample testing, eggshell drilling is a crucial preliminary step in obtaining egg white samples, and the standardization and safety of its operation directly affect the accuracy of subsequent test data. Currently, mainstream laboratory eggshell drilling devices generally adopt a "single needle + fixed structure" design, meaning the device is equipped with only one puncture needle, which is manually or semi-automatically driven to puncture the eggshell, thereby completing the collection of egg white samples.

[0003] However, this traditional design has significant technical shortcomings in actual laboratory testing scenarios, failing to meet the requirements for accurate and contamination-free testing. The single-needle design is prone to cross-contamination, compromising the purity of the test samples. Laboratory testing often requires continuous collection of multiple batches of egg samples from different sources. After each puncture, the single needle of a traditional piercing device easily leaves residues of egg white, shell fragments, or microorganisms from the previous sample on the needle tip and body. Although operators can clean the needle using alcohol wiping or high-temperature sterilization, frequent sterilization consumes a significant amount of testing time, reducing experimental efficiency. This design cannot meet the core laboratory requirements for "high purity, high efficiency, and high safety" in egg white sample collection. There is an urgent need to optimize the device structure, solve the cross-contamination problem, improve adaptability and ease of operation, and provide reliable assurance for accurate testing. Utility Model Content

[0004] The purpose of this invention is to provide a tool for collecting eggshell holes for laboratory testing of egg white samples, in order to solve the problems existing in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A tool for collecting eggshell holes for laboratory testing of egg white samples, comprising: The carrier is cylindrical in shape, and one end of the carrier has an arc-shaped groove. The carrier is provided with a sliding groove, and the sliding groove is perpendicular to the axis of the carrier. The arc-shaped groove is connected to the sliding groove. A slide bar is slidably disposed inside the slide groove. The slide bar has multiple placement cavities, and the openings of the placement cavities face the arc-shaped groove. Multiple needle holders are slidably disposed inside the placement cavity; Multiple puncture needles are respectively fixedly disposed at one end of each needle hub near the arc-shaped groove; A lifting assembly, disposed on the carrier, is used to lift the needle hub so that the puncture needle passes through the groove into the arc-shaped recess.

[0006] Optionally, the carrier has a lifting groove communicating with the slide groove, the lifting groove intersects the axis of the slide groove and the carrier perpendicularly, and the placement cavity is open at one end facing the lifting groove; The lifting component includes: The lifting bar is slidably disposed inside the lifting groove, and the end of the lifting bar facing the placement cavity is inclined, with the inclined surface facing the arc-shaped groove.

[0007] Optionally, the carrier is provided with a first locking plate corresponding to the lifting groove, the locking plate is provided with a first protrusion, the lifting bar is rotatably provided with a second locking plate, the second locking plate is provided with a second protrusion, and in the state where the lifting bar lifts the needle seat, the first protrusion and the second protrusion can be engaged and matched with each other.

[0008] Optionally, a first thumb block is provided at the end of the lifting bar away from the inclined surface.

[0009] Optionally, the slide bar has a limiting groove on the side wall of each of the placement cavities, and the needle seat is provided with a limiting block located inside the limiting groove.

[0010] Optionally, with the needle hub not raised, the puncture needle is completely located inside the placement cavity.

[0011] Optionally, a second thumb block is provided at both ends of the slider along its length.

[0012] The beneficial effects of this utility model are: The system uses multiple puncture needles and a slider to switch between them, ensuring one needle per egg. When not raised, the puncture needle is completely stored in the placement cavity, preventing needle residue from being mixed or contaminated by the outside. The arc-shaped groove helps to position the air cell of the egg, and the limiting structure prevents the needle seat from shifting, ensuring that the puncture accurately avoids the egg white and reduces the mixing of eggshell fragments. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of an eggshell punch for collecting egg white samples for laboratory testing according to this utility model; Figure 2 This is a schematic cross-sectional view of an eggshell perforator for collecting egg white samples in a laboratory setting, according to the present invention. Figure 1 ; Figure 3This is a schematic cross-sectional view of an eggshell perforator for collecting egg white samples in a laboratory setting, according to the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the slide bar of a laboratory eggshell hole puncher for testing egg white samples according to this utility model; The symbols for the main components are explained below: Carrier 101, arc-shaped groove 102, sliding groove 103, sliding strip 201, placement cavity 202, needle seat 203, puncture needle 204, limiting groove 205, limiting block 206, second thumb block 207, lifting groove 301, lifting strip 302, first locking plate 303, first protrusion 304, second locking plate 305, second protrusion 306, first thumb block 307. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] like Figure 1-4 As shown, a tool for collecting eggshell holes for laboratory testing of egg white samples includes: The carrier 101 is cylindrical and has an arc-shaped groove 102 at one end. The carrier 101 is provided with a sliding groove 103, which is perpendicular to the axis of the carrier 101. The arc-shaped groove 102 is connected to the sliding groove 103. The slide bar 201 is slidably disposed inside the slide groove 103. The slide bar 201 has multiple placement cavities 202, and the openings of the placement cavities 202 face the arc-shaped groove 102. Multiple needle holders 203 are slidably disposed inside the placement cavity 202; Multiple puncture needles 204 are respectively fixedly disposed at one end of each needle hub 203 near the arc-shaped groove 102; A lifting assembly, disposed on the carrier 101, is used to lift the needle holder 203 so that the puncture needle 204 passes through the slide groove 103 into the arc-shaped groove 102.

[0017] The carrier 101 provides the basic support frame for the entire device. Its cylindrical design facilitates hand gripping by operators, conforms to their daily hand exertion habits, and provides a stable machining and installation benchmark for structures such as the arc-shaped groove 102 and the slide 103, ensuring the positional accuracy of each component. Its core function is to connect the "eggshell positioning area (arc-shaped groove 102)" and the "puncture component movement area (slide 103)" through an integrated structure, forming a complete "positioning-puncture" operation path. At the same time, the enclosed cylindrical body can prevent external dust and impurities from entering the interior of the slide 103, preventing them from affecting the smooth sliding of the slide bar 201 and maintaining the cleanliness of the puncture component.

[0018] The contour of the arc-shaped groove 102 is designed according to the curvature of a common eggshell, and its core function is to achieve precise positioning and stable placement of the eggshell. When the egg is placed in the arc-shaped groove 102, the inner wall of the groove and the outer surface of the eggshell form a close fit and support. This not only restricts the horizontal translation and rotation of the eggshell, ensuring that the puncture position does not deviate, but also disperses the pressure when pressing to break the shell, preventing the eggshell from breaking into irregular fragments due to excessive local force. In addition, the connection between the arc-shaped groove 102 and the slide 103 forms a "puncture hole," providing a precise target point for the raised puncture needle 204. This hole is also compatible with the conventional position of the egg's air cell, assisting the operator in quickly aligning the air cell and providing structural support for subsequent contamination control operations.

[0019] The chute 103 is opened perpendicular to the axis of the carrier 101, and its chute size is precisely matched with the cross-sectional size of the slide bar 201, forming the core function of the "sliding track". On the one hand, the groove 103 provides guidance for the translation of the slider 201, ensuring that when the slider 201 drives the needle seat 203 and the puncture needle 204 to slide, it only moves in a straight line and does not wobble radially, thus preventing the puncture needle 204 from contacting the eggshell prematurely during the sliding process. On the other hand, the depth and width design of the groove 103 ensures that "the puncture needle 204 is completely contained inside the groove 103 under normal conditions." That is, when the slider 201 drives the puncture needle 204 to translate and switch, the puncture needle 204 is always within the groove of the groove 103 and will not protrude prematurely from the surface of the carrier 101 or the arc groove 102. Only when the slider 201 drives a certain group of puncture needles 204 to align with the connecting hole of the arc groove 102 and the groove 103 can the condition for "lifting and protruding" be met, thus structurally eliminating the problem of "the puncture needle protruding prematurely."

[0020] The slide bar 201 is a key moving component for realizing the core design of "one egg, one needle," and its sliding engagement with the slide groove 103 provides the operational basis for "puncture needle switching." Multiple placement cavities 202 on the slide bar 201 are evenly arrayed, with each cavity corresponding to an independent set of needle holders 203 and puncture needles 204, forming an independent unit structure of "one cavity, one puncture assembly." By pushing the slide bar 201 horizontally within the slide groove 103, the operator can quickly move different sets of puncture needles 204 to the working position "aligned with the connecting hole between the arc-shaped groove 102 and the slide groove 103." During the sliding process, because the puncture needles 204 are completely accommodated within the slide groove 103, they will not interfere with other components or the eggshell, achieving "interference-free switching." This design avoids the traditional cycle of "use-sterilization-reuse" for a single needle, directly achieving "one egg, one needle" by "switching to a new puncture needle," reducing the risk of cross-contamination from the source.

[0021] The placement cavity 202 is an independent receiving and guiding structure designed on the slide bar 201 for the needle holder 203 and the puncture needle 204. Its opening faces the arc-shaped groove 102 and is perpendicular to the extension direction of the slide groove 103. On the one hand, the inner wall of the placement cavity 202 is precisely fitted with the outer wall of the needle holder 203, allowing the needle holder 203 to move only along the axial direction "towards / away from the arc-shaped groove 102" (i.e., lifting or resetting), limiting the radial offset of the needle holder 203, and ensuring that the puncture needle 204 can be accurately aligned with the connecting hole of the arc-shaped groove 102 when it is lifted. On the other hand, the independent design of "one placement cavity 202 corresponding to a set of puncture components" ensures that each puncture needle 204 is in a closed cavity when not in use, avoiding contact contamination between different puncture needles 204, and preventing external impurities from adhering to the needle tip, further ensuring the cleanliness of the puncture needle 204.

[0022] The needle holder 203 is the direct mounting carrier of the puncture needle 204, and its sliding engagement with the placement cavity 202 forms the basis for the "puncture needle lifting / resetting" motion. One end of the needle holder 203 fixes the puncture needle 204, and the other end engages with the lifting component. Its core function is to convert the "lifting force" of the lifting component into the "axial displacement" of the puncture needle 204. When the lifting component acts on the needle holder 203, the needle holder 203 slides along the placement cavity 202 toward the arc-shaped groove 102, causing the puncture needle 204 to gradually rise from the state of "completely contained in the groove 103" to the working state of "protruding into the arc-shaped groove 102". After puncture, the lifting component removes its force, and the needle holder 203 can reset along the placement cavity 202, causing the puncture needle 204 to retract into the groove 103, preparing for the next slide switch or storage. In addition, the length design of the needle hub 203 ensures that the protrusion height of the puncture needle 204 after it is raised is moderate, which is sufficient to penetrate the air cell of the eggshell, but will not go too deep and cause contact with the egg white.

[0023] The puncture needle 204 and needle holder 203 are fixed in a one-to-one correspondence and are the core components that directly act on the eggshell. Its design fully serves the needs of "one needle per egg to prevent contamination" and "air cell puncture to avoid egg white". First, the independent setting of multiple puncture needles 204 means that a new puncture needle 204 can be used to process each egg sample. After use, it can be disassembled and replaced or sterilized individually, completely avoiding "sample residue cross-contamination" caused by the repeated use of a single needle in the traditional way. Second, the sharpness and length of the puncture needle 204 are adapted to the design. The sharp needle tip ensures that it can easily penetrate the eggshell and reduce the generation of eggshell fragments. The appropriate length ensures that the puncture can only penetrate the air cell area and will not go deep into the egg white area. Finally, under normal conditions, the puncture needle 204 is completely contained in the groove 103 and only rises and protrudes after being aligned with the air cell position, further reducing the risk of contamination in non-operational states.

[0024] The core function of the lifting component is to "switch the puncture needle 204 from the storage state to the working state." It only has the function of "position lifting" and has no shell-breaking assistance effect. Its working principle is as follows: When the slider 201 drives a set of needle seats 203 / puncture needles 204 to align with the connecting hole of the arc-shaped groove 102 and the slide 103, by operating the lifting component, the needle seat 203 can be driven to slide upward along the placement cavity 202, so that the puncture needle 204 gradually protrudes into the arc-shaped groove 102 until it reaches a height sufficient to penetrate the air cell of the eggshell. At this time, the lifting component has completed its task. The subsequent shell-breaking action depends entirely on the operator to manually press the egg into the arc-shaped groove 102, using the egg's own pressure to make the eggshell contact and penetrate the puncture needle 204, avoiding excessive puncture due to the additional force provided by the lifting component. After the puncture is completed, the lifting component is reset, and the needle seat 203 drives the puncture needle 204 back into the slide groove 103, which can then push the slide bar 201 to switch to the next set of puncture components.

[0025] Based on the above component design, this device needs to be used in conjunction with the "air chamber puncture" operation in actual use to further eliminate the risk of contamination: Since the air chamber of an egg is a hollow area without egg white, the operator can use the positioning assistance of the arc-shaped groove 102 to align the position of the egg air chamber with the raised puncture needle 204; when pressing the egg, the puncture needle 204 only penetrates the eggshell corresponding to the air chamber, without contacting the egg white, thus avoiding the needle tip being contaminated with egg white and causing sample contamination, and also reducing the probability of eggshell fragments falling into the egg white during the puncture process (fragments in the air chamber area can remain in the air chamber and not mix with the egg white), ultimately achieving dual contamination control of "one egg, one needle + air chamber puncture", fully meeting the laboratory's requirements for "high purity and no cross-contamination" in egg white sample collection.

[0026] Specifically, the carrier 101 has a lifting groove 301 that communicates with the slide 103. The lifting groove 301 and the slide 103 intersect each other perpendicularly on the axis of the carrier 101. The placement cavity 202 is open at one end facing the lifting groove 301. The lifting components include: The lifting bar 302 is slidably disposed inside the lifting groove 301, and the end of the lifting bar 302 facing the placement cavity 202 is inclined, with the inclined surface facing the arc-shaped groove 102.

[0027] The lifting groove 301 is the core structure that provides "installation reference + motion guidance" for the lifting assembly. Its design is fully adapted to the core requirements of "precisely lifting the puncture needle without interfering with the switching of the slide bar". The lifting groove 301, the slide bar 103, and the axis of the carrier 101 intersect each other perpendicularly, forming a "three-dimensional vertical" spatial layout. This layout ensures that the lifting groove 301 can achieve precise communication with the slide bar 103, while avoiding damage to the overall structural strength of the carrier 101 by opening the lifting groove 301. At the same time, it provides a clear constraint on the sliding direction of the lifting bar 302 (moving only in the direction perpendicular to the slide bar 103), preventing the lifting bar 302 from deviating and causing the lifting action to fail.

[0028] The openings of the lifting groove 301 and the placement cavity 202 form a "corresponding relationship": when the slider 201 slides in the sliding groove 103, causing a certain placement cavity 202 to move directly below the lifting groove 301, the opening of the placement cavity 202 facing the lifting groove 301 is exactly aligned with the lifting groove 301, providing a "channel" for the lifting bar 302 to extend into the placement cavity 202 and contact the needle seat 203; while when the slider 201 moves other placement cavities 202 (i.e. when switching puncture needles), the openings of the misaligned placement cavities 202 are misaligned with the lifting groove 301, and the lifting bar 302 cannot contact the corresponding needle seat 203. Structurally, this eliminates the problem of "accidentally lifting puncture needles in non-working states" and further ensures the normal requirement that "puncture needles do not protrude prematurely".

[0029] In addition, the depth and width of the lifting groove 301 are precisely designed to ensure that the lifting bar 302 can slide smoothly in the groove, while limiting the radial sway of the lifting bar 302. This ensures that the force exerted by the lifting bar 302 on the needle seat 203 remains in a stable direction, preventing the needle seat 203 from getting stuck or the puncture needle 204 from being lifted crooked due to the deviation of the lifting bar 302.

[0030] As the core actuator of the lifting assembly, the lifting bar 302 is designed to convert its own sliding into the axial lifting of the needle seat 204 through a mechanical structure.

[0031] The end of the lifting bar 302 facing the placement cavity 202 adopts an "inclined surface" design, and the inclined surface faces the arc-shaped groove 102. This inclined surface is the key to realizing the "lifting action": when the slide bar 201 drives the placement cavity 202 to align with the lifting groove 301, the operator pushes the lifting bar 302 to slide along the lifting groove 301 towards the placement cavity 202. At this time, the inclined surface will contact the bottom of the needle seat 203. As the lifting bar 302 continues to slide, the "inclined surface guiding effect" of the inclined surface will gradually convert the "horizontal sliding displacement" of the lifting bar 302 into the "vertical upward displacement" of the needle seat 203 (i.e., moving along the placement cavity 202 towards the arc-shaped groove 102), and finally drive the puncture needle 204 from the state of "accommodating in the slide groove 103" to the working state of "protruding from the arc-shaped groove 102".

[0032] The lifting bar 302 only has the function of "displacement conversion" and has no additional elastic components or assistive structures (such as springs, gear transmissions, etc.). The force that pushes the needle seat 203 to lift it depends entirely on the manual pushing force of the operator. Moreover, the sliding stroke of the lifting bar 302 is fixed (limited by the length of the lifting groove 301). This ensures that the lifting height of the puncture needle 204 is controllable - it can only reach the preset height of "penetrating the air chamber eggshell" and will not be over-lifted due to excessive assistance. At the same time, the subsequent shell-breaking action requires the operator to manually press the egg into the arc-shaped groove 102, and use the egg's own pressure to contact the puncture needle 204 to complete the shell breaking.

[0033] Furthermore, the carrier 101 is provided with a first locking plate 303 corresponding to the lifting groove 301, the locking plate 303 is provided with a first protrusion 304, the lifting bar 302 is rotatably provided with a second locking plate 305, the second locking plate 305 is provided with a second protrusion 306, and when the lifting bar 302 lifts the needle seat 203, the first protrusion 304 and the second protrusion 306 can be engaged and matched with each other.

[0034] The first locking plate 303 is fixed to the carrier 101 and corresponds to the lifting groove 301. It is the "fixed reference component" of the locking structure. Its position is precisely matched with the end position of the lifting bar 302 after it is lifted, ensuring that it can accurately dock with the second locking plate 305 when locked. The first protrusion 304, as the "fixed end buckle" for locking, is integrated on the first locking plate 303. Its shape and size are adapted to the second protrusion 306, providing a structural basis for the two to fasten together. Its core function is to restrict the reverse sliding of the lifting bar 302 by fastening with the second protrusion 306, and to prevent the lifting bar from retracting after being lifted.

[0035] The second locking plate 305 is rotatably mounted on the lifting bar 302 and has the characteristic of "adjustable direction". It is the "moving actuator" of the locking operation. When the lifting bar 302 pushes the needle seat 203 to the preset height (the puncture needle 204 protrudes from the arc-shaped groove 102), rotating the second locking plate 305 can move the second protrusion 306 toward the first protrusion 304. The second protrusion 306 acts as a "moving end buckle". After engaging with the first protrusion 304, it can stably fix the lifting bar 302 at the lifting end position and prevent it from falling back due to external force (such as the slight vibration when pressing an egg) and causing the puncture needle 204 to sink, ensuring that the puncture needle always maintains the working height.

[0036] The core value of the combination of the two is that it eliminates the need for operators to continuously apply force to maintain the position of the lifting bar 302, freeing their hands to focus on positioning the egg and pressing to break the shell. At the same time, it avoids affecting the puncture accuracy due to the lifting bar loosening. Moreover, the locking structure only serves to "fix the position" and does not provide additional assistance in breaking the shell, which fully conforms to the design principle of "no shell breaking assistance" of the device. When unlocking, it is only necessary to rotate the second locking plate 305 in the opposite direction to separate the two protrusions, which can push the lifting bar 302 to reset.

[0037] Furthermore, a first thumb block 307 is provided at the end of the lifting bar 302 away from the inclined surface.

[0038] The first thumb block 307 is fixed to the end of the lifting bar 302 away from the inclined surface. Its size and shape are in line with the pressing / pushing habits of an adult thumb (usually designed as a slightly raised arc or rectangular block). This can increase the contact area between the thumb and the component, prevent slippage during operation, and allow the operator to clearly perceive the movement status of the lifting bar 302 through tactile feedback, making sliding operation convenient.

[0039] Furthermore, the slide bar 201 has a limiting groove 205 on the side wall of each placement cavity 202, and the needle seat 203 is provided with a limiting block 206 located inside the limiting groove 205.

[0040] The limiting groove 205 is opened on the side wall of the placement cavity 202 of the slide bar 201. Its core function is to "prevent the offset guide structure of the needle seat 203". In order to meet the needs of subsequent cleaning and removal of the puncture needle 204, the end facing the arc-shaped groove 102 is designed to be completely open. This open structure does not affect the guiding function. At the same time, it provides sufficient operating space for the operator to remove the needle seat 203 and puncture needle 204 from the placement cavity 202 after the test (for cleaning and replacement), avoiding the closed structure from hindering subsequent maintenance.

[0041] The extension direction of the limiting groove 205 is completely consistent with the lifting direction (axial direction) of the needle holder 203. The width of the groove is precisely matched with the size of the limiting block 206, leaving only a gap for the limiting block 206 to slide smoothly, with no extra space. This design can firmly limit the movement direction of the needle holder 203: on the one hand, it prevents the needle holder 203 from radially wobbling (left and right deviation) during lifting or resetting, and on the other hand, it avoids the needle holder 203 from circumferentially rotating, ensuring that the needle holder 203 always drives the puncture needle 204 to move axially, ensuring that the needle tip can accurately align with the air cell of the egg during puncture, and eliminating puncture position deviation caused by needle holder deviation.

[0042] The limiting block 206 is fixed to the side wall of the needle holder 203 and forms an "embedded sliding fit" with the limiting groove 205, serving as a "constraint" to ensure stable movement of the needle holder 203. Its shape is precisely matched to the limiting groove 205, and when it is raised or reset synchronously with the needle holder 203, it is always embedded in the groove without significant loosening. It can directly counteract the "lateral component force" generated by the inclined surface of the lifting bar 302 on the needle holder 203, preventing the needle holder 203 from shifting to the side and ensuring that the needle holder 203 drives the puncture needle 204 to always be aligned axially with the egg air chamber in the arc-shaped groove 102.

[0043] Furthermore, with the needle hub 203 not raised, the puncture needle 204 is completely located inside the placement cavity 202.

[0044] Laboratory egg white sample collection has extremely high requirements for "sample purity". When the puncture needle 204 is not raised, it is completely contained in the placement cavity 202, which can form "physical isolation protection": on the one hand, the placement cavity 202 can prevent external dust, impurities and microorganisms from adhering to the needle tip, avoiding contamination of the puncture needle 204 before use; on the other hand, multiple sets of puncture needles 204 are placed in independent placement cavities 202, which can completely eliminate contact contamination between different puncture needles 204 (such as cross-residue caused by needle tip collision), providing a prerequisite guarantee for the "one egg, one needle" anti-cross-contamination design.

[0045] The puncture needle 204 has a sharp tip and is completely retracted into the placement cavity 202 when not raised, achieving both "safety protection" and "needle tip protection": from a safety perspective, it prevents operators from accidentally touching the needle tip and getting scratched when picking up or placing the device or pushing the slider 201; from the perspective of needle tip protection, the placement cavity 202 can prevent the needle tip from becoming dull or bent due to collisions (such as hitting the table when placing the device or hitting the slide groove when switching the slider), ensuring that the puncture needle 204 always maintains its sharpness, ensuring smooth penetration of the eggshell air cell, and reducing the problem of excessive eggshell breakage and debris mixed into the air cell due to needle tip damage.

[0046] Furthermore, a second thumb block 207 is provided at both ends of the slider 201 along its length.

[0047] The size, protrusion height, and surface curvature of the second thumb block 207 are all designed to fit the physiological habits of thumb pressing / pushing. Whether the operator is left-handed or right-handed, they can drive the slider 201 to slide by pushing the second thumb block 207 at either end with their thumb, without having to adjust their hand grip posture, thus adapting to the usage habits of different operators. At the same time, the protruding block structure increases the contact area between the thumb and the slider 201, preventing slippage caused by sweaty hands, wearing gloves, or contact with trace amounts of reagents, and ensuring stable control of the movement of the slider 201 when force is applied. It has the same function as the first thumb block 307 mentioned above, which is to facilitate sliding.

[0048] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the present invention 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 the present invention. Furthermore, relational terms such as "first" and "second" are merely 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, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0050] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A tool for collecting eggshell holes for laboratory testing of egg white samples, characterized in that, include: The carrier is cylindrical in shape, and one end of the carrier has an arc-shaped groove. The carrier is provided with a sliding groove, and the sliding groove is perpendicular to the axis of the carrier. The arc-shaped groove is connected to the sliding groove. A slide bar is slidably disposed inside the slide groove. The slide bar has multiple placement cavities, and the openings of the placement cavities face the arc-shaped groove. Multiple needle holders are slidably disposed inside the placement cavity; Multiple puncture needles are respectively fixedly disposed at one end of each needle hub near the arc-shaped groove; A lifting assembly, disposed on the carrier, is used to lift the needle hub so that the puncture needle passes through the groove into the arc-shaped recess.

2. The laboratory eggshell piercing device for collecting egg white samples according to claim 1, characterized in that: The carrier has a lifting groove that communicates with the slide groove. The lifting groove and the slide groove intersect each other perpendicularly on the axis of the carrier. The placement cavity is open at one end facing the lifting groove. The lifting component includes: The lifting bar is slidably disposed inside the lifting groove, and the end of the lifting bar facing the placement cavity is inclined, with the inclined surface facing the arc-shaped groove.

3. The eggshell perforator for laboratory testing of egg white samples according to claim 2, characterized in that: The carrier is provided with a first locking plate corresponding to the lifting groove, and the locking plate is provided with a first protrusion. The lifting bar is provided with a second locking plate, and the second locking plate is provided with a second protrusion. When the lifting bar lifts the needle seat, the first protrusion and the second protrusion can be engaged and matched with each other.

4. The eggshell perforator for laboratory testing of egg white samples according to claim 2, characterized in that: A first thumb block is provided at the end of the lifting bar away from the inclined surface.

5. The eggshell perforator for laboratory testing of egg white samples according to claim 1, characterized in that: The slide bar has a limiting groove on the side wall of each of the placement cavities, and the needle seat is provided with a limiting block located inside the limiting groove.

6. The eggshell perforator for laboratory testing of egg white samples according to claim 1, characterized in that: With the needle hub not raised, the puncture needle is completely located inside the placement cavity.

7. The laboratory eggshell hole punch for egg white sample collection of claim 1, wherein: A second thumb block is provided at both ends of the slider along its length.

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