Distributor facilitating use of drug sensitive paper sheets in laboratory

Abstract

The utility model relates to the technical field of drug sensitive paper sheet distributors, and particularly discloses a distributor facilitating use of drug sensitive paper sheets in a laboratory, which comprises a bottom support, a shell and a material pushing assembly, a supporting plate with inner and outer layers of circumferential discharging holes is arranged on the inner side of the bottom support, the shell is connected with the bottom support through a rotary limiting assembly, and the inner and outer layers of circumferential medicine tube grooves and the discharging holes are arranged in a staggered mode in the radial direction. The pushing assembly is composed of a stand column, a base, a pressing rod, a push rod, a tension spring and an ejector pin, the pressing rod drives the push rod to laterally move through a first inclined guide face, and the ejector pin completes the ejection action of the medicine sensitive paper on the lowermost layer of the medicine tube under the reset action of the tension spring. The paper storage capacity is multiplied through the design of inner and outer double-layer medicine tube grooves, and the collaborative operation requirement of multiple types of paper sheets is met; shell rotation positioning is matched with trumpet-shaped discharging hole guiding, and it is guaranteed that the paper sheets accurately fall into circumferential equidistant positions of the culture dish.

Description

A dispenser for convenient use of drug sensitivity test strips in laboratories Technical Field

[0001] This utility model relates to the technical field of drug sensitivity test strip dispensers, and in particular to a dispenser that facilitates the use of drug sensitivity test strips in laboratories. Background Technology

[0002] Drug susceptibility testing is an important technique in clinical microbiology. It involves attaching discs containing different antibiotics to the surface of an agar medium and observing the inhibition of pathogenic microorganism growth, thereby assessing antibiotic sensitivity and guiding rational drug use in clinical practice. Traditionally, healthcare professionals manually pick up the discs and place them one by one onto the medium surface. This method has several drawbacks: first, manual handling easily leads to contamination of the discs or the medium; second, it is inefficient for large-scale testing, and the uniformity of disc distribution is difficult to guarantee, affecting the interpretation of test results; third, multiple types of discs are easily confused when handled together, increasing the risk of human error.

[0003] To improve testing efficiency and reliability, susceptibility testing paper dispensers are increasingly being introduced into laboratory operations. These devices integrate a paper storage structure and a feeding mechanism to achieve batch storage and targeted release of susceptibility testing paper. For example, Chinese Patent Publication No. CN214357886U discloses a susceptibility testing paper dispenser that employs a circumferentially distributed drug tube groove, guide groove, and sliding plate linkage structure, releasing the paper by pressing a top rod to push the sliding plate. However, this technology still has the following shortcomings:

[0004] Limited paper storage capacity: The single-layer medicine tube slot design (usually 6 or 8 holes) is difficult to meet the simultaneous loading requirements of multiple types of paper sheets, and consumables need to be replaced frequently;

[0005] Complex structure: It relies on the L-shaped sliding fit between the guide groove and the slide plate. Long-term use is prone to jamming due to wear, resulting in high maintenance costs.

[0006] Insufficient positioning accuracy: The landing point of the paper after release depends on manual rotation of the shell for visual alignment, making it difficult to ensure the uniformity of the circumferential distribution of the petri dish;

[0007] Inconvenient to disassemble and assemble: The integrated design of the medicine tube tank and the pusher assembly makes cleaning and disinfection difficult and can easily cause cross-contamination.

[0008] Therefore, there is an urgent need for a dispenser with a larger paper storage capacity, a simple and reliable structure, and the ability to precisely control the distribution of paper sheets, in order to meet the needs of efficient and standardized drug sensitivity testing in laboratories. Summary of the Invention

[0009] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a dispenser for convenient use of drug sensitivity test strips in the laboratory, so as to solve the above problems.

[0010] A dispenser for convenient use of susceptibility testing strips in laboratories includes:

[0011] The base has a support plate on the top inner side, and the support plate has two layers of circumferentially distributed feeding holes.

[0012] Rotate the housing located on the upper end of the base. The housing has two layers of circumferentially distributed medicine tube grooves, which are used to hold medicine tubes. The medicine tube grooves and the discharge hole are radially offset from each other along the housing, and the medicine tube grooves are located on the side closer to the center of the housing.

[0013] A material pusher assembly that extends axially into the base support; the material pusher assembly includes:

[0014] The column is provided with two layers of circumferentially distributed movable holes;

[0015] The base is detachably fixed to the lower end of the column. The base is provided with a side hole extending radially, and the upper end of the side hole is connected to the movable hole.

[0016] A pressure rod is provided in the movable hole, and the lower end of the pressure rod is provided with a first inclined guide surface;

[0017] A push rod is provided in the side hole, and one end of the push rod is provided with a second inclined guide surface that cooperates with the first inclined guide surface;

[0018] A tension spring is provided in the side hole, and the tension spring is connected to one end of the push rod;

[0019] A push pin connected to the other end of the push rod is used to laterally eject the bottom layer of drug sensitivity paper from the drug tube.

[0020] Specifically, the upper end of the feeding hole has a funnel-shaped structure that is wider at the top and narrower at the bottom.

[0021] Specifically, a rotation limiting assembly is provided between the base and the housing, the rotation limiting assembly comprising:

[0022] A plurality of first limiting blocks are distributed on the upper edge of the inner side of the base, and a groove is formed between two adjacent first limiting blocks;

[0023] Several second limiting blocks are distributed on the lower edge of the outer side of the housing;

[0024] A top support mechanism is provided between the base and the housing. Under normal conditions, the top support mechanism lifts the housing so that the second limiting block is engaged in the slot. When the housing is pressed, the top support mechanism contracts so that the second limiting block is disengaged from the slot.

[0025] Specifically, the top support mechanism includes a spring fixed to the base and a ball bearing disposed on the top of the spring, the ball bearing rollingly engaging with the housing.

[0026] Specifically, the upper end of the pressure rod extends through the column and is connected to a pressing head.

[0027] Specifically, the base has a trumpet-shaped cover structure.

[0028] Specifically, there are 6 feeding holes in each layer.

[0029] Specifically, the bottom of the medicine tube trough is provided with a notch that runs radially through the column.

[0030] The beneficial effects of this utility model are:

[0031] 1. The present application provides a dispenser for convenient laboratory use of drug sensitivity test strips. By setting up inner and outer double-layer drug tube grooves, the paper storage capacity is increased to twice that of the conventional single-layer structure, which can meet the needs of loading multiple types of drug sensitivity test strips at the same time.

[0032] 2. The shell and base are designed with a rotating fit structure. The corresponding relationship between the drug tube groove and the feeding hole is accurately positioned by the limiting component to ensure that the drug sensitivity paper falls accurately into the designated area of ​​the culture dish;

[0033] 3. The feeding assembly adopts a sloped linkage and elastic reset mechanism. The side ejection action of the ejector pin avoids paper sticking or contamination caused by vertical downward pressure. It is combined with the trumpet-shaped feeding hole to guide the paper to slide down smoothly.

[0034] 4. The detachable base and column design facilitates cleaning and maintenance, reducing the risk of cross-contamination. This structure improves operational efficiency while ensuring the standardization and reliability of drug sensitivity testing. Attached Figure Description

[0035] Figure 1 is a perspective view of the dispenser of this application;

[0036] Figure 2 is a perspective view of the dispenser of this application;

[0037] Figure 3 is a front view of the dispenser of this application;

[0038] Figure 4 is a three-dimensional sectional view along line AA in Figure 3;

[0039] Figure 5 is an exploded view of the dispenser of this application;

[0040] Figure 6 is a schematic diagram of the structure of the petri dish and the drug sensitivity paper.

[0041] The attached figures are labeled as follows: base 10, tray 11, discharge hole 12, shell 20, medicine tube groove 21, medicine tube 30, pusher assembly 40, column 41, base 42, pressure rod 43, push rod 44, tension spring 45, ejector pin 46, rotation limit assembly 50, first limit block 51, slot 511, second limit block 52, top support mechanism 53, spring 531, ball 532, pressing head 431, notch 211, culture dish 60, drug sensitivity paper 31. Detailed Implementation

[0042] This invention provides a convenient dispenser for using drug sensitivity test strips in laboratories. To make the purpose, technical solution, and effects of this invention clearer and more explicit, the following detailed description, with reference to the accompanying drawings and embodiments, further illustrates this invention. It should be understood that the specific embodiments described herein are merely illustrative of this invention and are not intended to limit it.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limiting this invention.

[0044] Please refer to Figures 1 to 6. This embodiment discloses a dispenser for convenient use of drug sensitivity test strips in the laboratory, including:

[0045] The bottom support 10 has a support plate 11 on the top inner side, and the support plate 11 has two layers of circumferentially distributed feeding holes 12.

[0046] Rotate the housing 20 located on the upper end of the base 10. The housing 20 has two circumferentially distributed medicine tube grooves 21, which are used to put medicine tubes 30. The medicine tube grooves 21 and the discharge hole 12 are offset along the radial direction of the housing 20, and the medicine tube grooves 21 are located on the side close to the center of the housing 20.

[0047] A pusher assembly 40 is inserted axially into the base support 10; the pusher assembly 40 includes:

[0048] Column 41, which has two layers of circumferentially distributed movable holes;

[0049] The base 42 is detachably fixed to the lower end of the column 41. The base 42 is provided with a side hole extending radially, and the upper end of the side hole is connected to a movable hole.

[0050] A pressure rod 43 is provided in the movable hole, and a first inclined guide surface is provided at the lower end of the pressure rod 43;

[0051] A push rod 44 is provided in the side hole, and one end of the push rod 44 is provided with a second inclined guide surface that cooperates with the first inclined guide surface;

[0052] A tension spring 45 is installed in the side hole, and the tension spring 45 is connected to one end of the push rod 44;

[0053] The ejector pin 46 is connected to the other end of the push rod 44. The ejector pin 46 is used to push out the bottom layer of drug sensitivity paper 31 of the drug tube 30 laterally.

[0054] The dispensing mechanism of this application operates as follows: After placing the base 10 over the culture dish 60, the operator rotates the housing 20 to align the target drug tube slot 21 with the radial side of the corresponding feeding hole 12. When the pressure rod 43 is pressed down, the first inclined guide surface of the pressure rod 43 makes sliding contact with the second inclined guide surface of the push rod 44, forcing the push rod 44 to move radially outward and stretching the tension spring 45, which drives the ejector pin 46 to push laterally into the bottom of the drug tube 30, pushing out the bottommost drug sensitivity paper 31 laterally. After releasing the pressure rod 43, the tension spring 45 pulls the push rod 44 back to its original position, and the ejector pin 46 retracts. After the ejected drug sensitivity paper 31 slides through the radial notch at the bottom of the drug tube slot 21, it falls precisely into the agar surface of the culture dish 60 along the funnel-shaped discharge hole 12 of the tray 11. If all drug tube slots 21 are filled with drug tubes 30, all pressure rods 43 can be pressed down simultaneously to achieve circumferential equidistant distribution of multiple drug sensitivity paper 31. If only some drug tube slots 21 are filled with drug tubes 30, the housing 20 can be rotated and the pressure rods 43 can be pressed down to make the drug sensitivity paper 31 in the drug tubes 30 fall one by one, thus achieving circumferential equidistant distribution of multiple drug sensitivity paper 31.

[0055] The advantages of the dispenser technology in this application are reflected in the following aspects: ① The double-layer inner and outer drug tube slots 21 design doubles the paper storage capacity compared to conventional single-layer structures, meeting the simultaneous loading requirements of multiple types of drug sensitivity test strips; ② The rotating fit structure of the shell 20 and the base 10, through the limiting component, precisely positions the correspondence between the drug tube slots 21 and the discharge hole 12, ensuring that the drug sensitivity test strips 31 accurately fall into the designated area of ​​the culture dish 60; ③ The pusher component 40 adopts a sloped linkage and elastic reset mechanism, and the lateral ejection action of the ejector pin 46 avoids paper adhesion or contamination caused by vertical downward pressure, and the funnel-shaped discharge hole 12 guides the paper strips to slide smoothly; ④ The detachable base 42 and column 41 design facilitates cleaning and maintenance, reducing the risk of cross-contamination. This structure improves operational efficiency while ensuring the standardization and reliability of drug sensitivity testing.

[0056] Please refer to Figures 4 and 5. The upper end of the feeding hole 12 has a funnel-shaped structure that is wider at the top and narrower at the bottom. The funnel-shaped structure can provide smooth guidance when the drug sensitivity paper 31 slides down, avoiding the paper from tilting or getting stuck. At the same time, the flared design reduces the contact area between the paper and the hole wall, reduces the risk of contamination, and ensures that the paper falls vertically into the designated area of ​​the culture dish 60, improving positioning accuracy.

[0057] Please refer to Figures 4 and 5. A rotation limiting component 50 is provided between the base 10 and the housing 20. The rotation limiting component 50 includes:

[0058] A plurality of first limiting blocks 51 are distributed on the upper edge of the inner side of the base 10, and a slot 511 is formed between two adjacent first limiting blocks 51;

[0059] Several second limiting blocks 52 are distributed on the lower edge of the outer side of the shell 20;

[0060] A top support mechanism 53 is provided between the base support 10 and the housing 20. Under normal conditions, the top support mechanism 53 lifts the housing 20 so that the second limiting block 52 is engaged in the slot 511. When the housing 20 is pressed, the top support mechanism 53 retracts so that the second limiting block 52 is disengaged from the slot 511.

[0061] The working process of the rotating limiting component 50 is as follows: When it is necessary to switch the feeding position, the operator presses the housing 20 to retract the top support mechanism 53, at which time the second limiting block 52 disengages from the slot 511; after rotating the housing 20 to the target angle, it is released, and the top support mechanism 53 lifts the housing 20, so that the second limiting block 52 is engaged in the adjacent slot 511, ensuring that the drug tube slot 21 is precisely aligned with the corresponding feeding hole 12. Through this cyclic action, the drug sensitivity paper 31 in different drug tubes 30 can be released sequentially to the circumferentially equidistant positions of the culture dish 60 at preset angles (such as switching positions every 60°).

[0062] Please refer to Figure 5. The top support mechanism 53 includes a spring 531 fixed to the base 10 and a ball bearing 532 located on top of the spring 531. The ball bearing 532 rolls with the housing 20. Of course, to better install the ball bearing 532, a ball seat can be fixed to one end of the spring 531, with a hemispherical recess on the ball seat, and the ball bearing 532 is placed in the hemispherical recess. This application significantly reduces rotational friction resistance through the rolling engagement of the ball bearing 532 with the housing 20, making the rotation of the housing 20 easier and smoother. The spring 531 provides continuous elastic preload, ensuring that there is no gap when the second limit block 52 engages with the slot 511, enhancing positioning stability. The spherical contact surface of the ball bearing 532 can adapt to the rotation trajectory of the housing 20, avoiding local wear and extending the service life of the mechanism. At the same time, the compression stroke of the spring 531 and the rolling displacement of the ball bearing 532 work together to provide the operator with clear segmented tactile feedback, ensuring that the rotation angle is precise and controllable each time.

[0063] The upper end of the pressure rod 43 extends through the column 41 and is connected to the pressing head 431. The pressing head 431 increases the contact area at the top of the pressure rod 43, making the operator apply force more evenly and stably, and avoiding finger fatigue caused by single-point pressing.

[0064] Please refer to Figure 2. The base 10 has a trumpet-shaped cover structure. The trumpet-shaped cover structure of the base 10 is adapted to the outer edge of different sized culture dishes 60 through the flared design, forming a closed feeding space to isolate external airflow interference.

[0065] In a preferred embodiment, there are 6 feeding holes 12 per layer. Of course, in other embodiments, they can also be set to 8, 10, etc.

[0066] Furthermore, please refer to Figure 4. Typically, the bottom of the drug tube 30 is provided with an opening structure that allows the drug sensitivity paper 31 to fall off laterally. In this embodiment, the bottom of the drug tube groove 21 is provided with a notch 211 that runs radially through the column 41, which facilitates the passage of the ejector pin 46 when it pushes laterally, so that the ejector pin 46 can smoothly push off the bottommost drug sensitivity paper 31 of the drug tube 30.

[0067] The preferred embodiments of this utility model have been described in detail above. However, this invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this invention.

Claims

1. A dispenser for convenient use of drug sensitivity test strips in the laboratory, characterized in that, include: A base (10) is provided with a support plate (11) on the top inner side of the base (10). The support plate (11) is provided with two layers of circumferentially distributed feeding holes (12). A housing (20) is rotatably provided on the upper end of the base (10). The housing (20) is provided with two layers of circumferentially distributed medicine tube grooves (21). The medicine tube grooves (21) are used to put medicine tubes (30). The medicine tube grooves (21) and the feeding holes (12) are radially offset along the housing (20), and the medicine tube grooves (21) are located on the side close to the center of the housing (20). A pusher assembly (40) is inserted axially into the base (10). The pusher assembly (40) includes: a column (41). The column (41) is provided with an inner... Two outer layers of circumferentially distributed movable holes; a base (42) detachably fixed to the lower end of the column (41), the base (42) having a radially extending side hole, the upper end of the side hole being connected to the movable hole; a pressure rod (43) disposed in the movable hole, the lower end of the pressure rod (43) having a first inclined guide surface; a push rod (44) disposed in the side hole, one end of the push rod (44) having a second inclined guide surface that cooperates with the first inclined guide surface; a tension spring (45) disposed in the side hole, the tension spring (45) being connected to one end of the push rod (44); a ejector pin (46) connected to the other end of the push rod (44), the ejector pin (46) being used to laterally eject the bottommost drug sensitivity paper (31) of the drug tube (30).

2. The dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, The upper end of the feeding hole (12) has a funnel-shaped structure that is larger at the top and smaller at the bottom.

3. The dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, A rotation limiting assembly (50) is provided between the base (10) and the housing (20). The rotation limiting assembly (50) includes: a plurality of first limiting blocks (51) distributed on the upper inner edge of the base (10), with a slot (511) formed between two adjacent first limiting blocks (51); a plurality of second limiting blocks (52) distributed on the lower outer edge of the housing (20); and a top support mechanism (53) provided between the base (10) and the housing (20). Under normal conditions, the top support mechanism (53) lifts the housing (20) so that the second limiting blocks (52) are engaged in the slot (511). When the housing (20) is pressed, the top support mechanism (53) contracts so that the second limiting blocks (52) are disengaged from the slot (511).

4. A dispenser for convenient laboratory use of drug sensitivity test strips according to claim 3, characterized in that, The top support mechanism (53) includes a spring (531) fixed to the base (10) and a ball (532) disposed on the top of the spring (531), the ball (532) rollingly engaging with the housing (20).

5. A dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, The upper end of the pressure rod (43) extends through the column (41) and is connected to a pressing head (431).

6. A dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, The base (10) has a trumpet-shaped cover structure.

7. A dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, The number of feeding holes (12) in each layer is 6.

8. A dispenser for convenient laboratory use of drug sensitivity test strips according to claim 1, characterized in that, The bottom of the medicine tube trough (21) is provided with a notch (211) that runs radially through the column (41).

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