Microorganism sample smear pen

Abstract

The utility model provides a smear pen for a microorganism sample, and belongs to the technical field of inoculators or samplers. The problem that an existing microorganism sample smear pen is poor in adaptability is solved. The microorganism sample smear pen comprises a connecting base and a smear head, the smear head is connected to the connecting base through a telescopic connecting assembly, and the end, away from the connecting base, of the smear head is provided with a smear face. When the distance between the connecting seat and the glass slide is changed, the coating surface can be always close to the glass slide through the stretching of the connecting assembly, and the adaptability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of inoculators or samplers and relates to a microbial sample smear pen. Background Art

[0002] Microbial sample smears are widely used in colony inoculation, culture, separation, and detection, and are an important task in microbial sample detection. At present, the manual smear method is used. The operator takes the sample box and dips it into the sample to be tested. The smear pen dipped with the sample to be tested gently presses a small amount of the sample to be tested on the slide to complete the smear. The manual method has the problems of non-standard operation, large randomness of manual operation, high labor cost, and low efficiency.

[0003] To this end, a Chinese patent discloses a microbial sample smear pen [authorization announcement number is CN205241683U], which includes a mechanical connection end and a free end, the mechanical connection end and the free end are rigidly connected, the mechanical connection end is detachably connected to an external mechanical structure, and the free end is an end arranged parallel to the glass slide and the contact portion with the glass slide is a medical fiber coating.

[0004] Since the mechanical connection end and the free end are rigidly connected, in order to ensure the smearing thickness and uniformity of the sample to be tested, the distance from the free end to the glass slide needs to be limited, and the free end needs to be parallel to the glass slide. However, in the actual smearing process, the glass slide is not parallel to the free end, and the distance from the free end to the glass slide is not constant, so the sample to be tested cannot be evenly smeared on the glass slide, and the adaptability of the smear pen is poor. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a microbial sample smear pen with good adaptability.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The microbiological sample smear pen comprises a connecting seat and a smear head. The smear head is connected to the connecting seat through a retractable connecting component, and one end of the smear head away from the connecting seat is provided with a smear surface.

[0008] Since the smear head is connected to the connection seat through a retractable connection component, when the distance between the connection seat and the glass slide changes, the smear surface can always be close to the glass slide through the extension of the connection component, which has good adaptability and will not cause the situation of being unable to smear. The smear direction of the smear pen extends along the length direction of the glass slide.

[0009] In the above-mentioned microbial sample smear pen, the connecting assembly includes a guide cylinder fixed on a connecting seat, an axially extending guide hole is provided in the guide cylinder, a smear rod is slidably provided in the guide hole, the smear head is connected to the smear rod, and an elastic member with one end acting on the smear rod is provided in the guide hole.

[0010] The other end of the elastic member acts on the end of the guide hole away from the smear head, and the elastic force of the elastic member on the smear rod extends along the sliding direction of the smear rod. When the distance between the connecting seat and the glass slide becomes smaller, the smear rod is retracted into the guide hole by squeezing, thereby reducing the distance from the smear surface to the connecting seat, so that the smear surface is always close to the glass slide.

[0011] In the above-mentioned microbiological sample smear pen, the end of the guide hole close to the smear head has a limiting step, and the end of the smear rod away from the smear head has a limiting stop edge, and the limiting stop edge abuts against the limiting step under the elastic force of the elastic member. The limiting stop edge and the limiting step can prevent the smear rod from falling out of the guide hole.

[0012] In the above-mentioned microbial sample smear pen, the limiting step has a rotation-stopping plane parallel to the axis of the guide hole, the smear rod has a limiting plane parallel to the axis of the guide hole, and the limiting plane is arranged opposite to the rotation-stopping plane.

[0013] The limiting plane and the anti-rotation plane constitute an anti-rotation structure for preventing the smear rod from circumferentially rotating, preventing the smear rod from circumferentially rotating relative to the guide hole, and ensuring the circumferential position of the smear head relative to the connecting seat.

[0014] In the above-mentioned microbial sample smear pen, the elastic member is a spring.

[0015] In the above-mentioned microbial sample smear pen, the smear surface is parallel to the upper surface of the slide during smearing.

[0016] In the above-mentioned microbial sample smear pen, the smear head is plate-shaped, and the two ends of the long side of the smear surface are respectively provided with protrusions protruding toward the side away from the connecting seat, and the distances from the ends of the two protrusions away from the connecting seat to the smear surface are equal. When smearing, the two protrusions are against the glass slide, the smear surface is parallel to the glass slide, and the distance from the smear surface to the glass slide is the protrusion height of the protrusion, which is also equal to the thickness of the coating.

[0017] In the above-mentioned microbial sample smear pen, the smear rod is provided with a slot having a width equal to the thickness of the smear head, a rotating shaft extending along the smear direction is passed through the slot, and the end of the smear head close to the connecting seat is rotatably arranged in the slot via the rotating shaft.

[0018] When the position of the glass slide is tilted, the smear head can rotate around the rotation axis so that the smear surface is always facing the glass slide, further improving the adaptability.

[0019] In the above-mentioned microbial sample smear pen, a weight-reducing hole is provided on the smear head.

[0020] In the above-mentioned microbial sample smear pen, the smear surface is arranged obliquely, and when smearing, the smear surface and the upper surface of the slide glass form an angle greater than 0° and less than 90°.

[0021] Compared with the prior art, this microbial sample smear pen has the following advantages:

[0022] Since the smear head is connected to the connecting seat through a retractable connecting component, when the distance between the connecting seat and the glass slide changes, the smear surface can be always kept close to the glass slide by the extension and retraction of the connecting component, thereby having good adaptability; the end of the smear head close to the connecting seat is arranged in the slot by rotating through a rotating shaft, and when the position of the glass slide is tilted, the smear head can rotate around the rotating shaft so that the smear surface is always facing the glass slide, thereby further improving the adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the smear pen in the first embodiment.

[0024] Figure 2 Schematic diagram of the explosion of the smear pen in the first embodiment.

[0025] Figure 3 It is a cross-sectional view of the connecting seat and the smear rod in the first embodiment.

[0026] Figure 4 It is a cross-sectional view of the connecting seat in the first embodiment.

[0027] Figure 5 It is a side view of the smear pen in embodiment two.

[0028] Figure 6 It is a side view of the smear pen in embodiment three.

[0029] In the figure, 1. connecting seat; 2. smear head; 21. smear surface; 22. raised part; 23. weight-reducing hole; 3. guide cylinder; 31. guide hole; 32. limit step; 33. anti-rotation plane; 4. smear rod; 41. limit stop edge; 42. limit plane; 43. slot; 5. spring. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] Embodiment 1

[0032] like Figure 1The microbiological sample smear pen shown comprises a cylindrical connection base 1 and a plate-shaped smear head 2 arranged below the connection base 1. The smear head 2 is connected to the connection base 1 through a retractable connection component, and the lower end of the smear head 2 has a smear surface 21. Since the smear head 2 is connected to the connection base 1 through the retractable connection component, when the distance between the connection base 1 and the glass slide changes, the smear surface 21 can be always close to the glass slide through the extension of the connection component, and the adaptability is good.

[0033] like Figure 2-4 As shown, the connecting assembly includes a guide cylinder 3 coaxially fixed to the lower end of the connecting seat 1, a guide hole 31 with an opening facing downward is coaxially provided in the guide cylinder 3, a smear rod 4 is slidably provided in the guide hole 31, the smear head 2 is connected to the smear rod 4, and an elastic member whose lower end acts on the smear rod 4 is provided in the guide hole 31. The elastic member in this embodiment is a spring 5.

[0034] The upper end of the spring 5 acts on the upper end of the guide hole 31, and the elastic force of the spring 5 on the smear rod 4 extends along the sliding direction of the smear rod 4, that is, the up-down direction. When the distance between the connecting seat 1 and the glass slide becomes smaller, the smear rod 4 is retracted into the guide hole 31 by squeezing, thereby reducing the distance between the smear surface 21 and the connecting seat 1, so that the smear surface 21 is always close to the glass slide.

[0035] In order to prevent the smear rod 4 from coming out of the guide hole 31, Figure 3-4 As shown, the end of the guide hole 31 close to the smear head 2 has a limiting step 32, and the end of the smear rod 4 away from the smear head 2 has a limiting stop edge 41, and the limiting stop edge 41 abuts against the limiting step 32 under the elastic force of the elastic member.

[0036] like Figure 4 As shown, there are two limiting steps 32 which are arranged opposite to each other. Figure 2 and Figure 3 As shown, there are also two limit stop edges 41 which are arranged opposite to the limit steps 32 one by one.

[0037] like Figure 3 and Figure 4 As shown, the limiting step 32 has a rotation-stopping plane 33 parallel to the axis of the guide hole 31, and the smear rod 4 has a limiting plane 42 parallel to the axis of the guide hole 31, and the limiting plane 42 is arranged opposite to the rotation-stopping plane 33. The limiting plane 42 and the rotation-stopping plane 33 constitute an anti-rotation structure for preventing the smear rod 4 from rotating circumferentially, preventing the smear rod 4 from rotating circumferentially relative to the guide hole 31, and ensuring the circumferential position of the smear head 2 relative to the connecting seat 1.

[0038] like Figure 1 and Figure 2As shown, the two ends of the long side of the smear surface 21 are respectively provided with protrusions 22 protruding toward the side away from the connecting seat 1, and the distances from the ends of the two protrusions 22 away from the connecting seat 1 to the smear surface 21 are equal. When smearing, the two protrusions 22 are against the glass slide, the smear surface 21 is parallel to the glass slide, and the distance from the smear surface 21 to the glass slide is the protrusion height of the protrusion 22, which is also equal to the thickness of the coating.

[0039] like Figure 2 and Figure 3 As shown, the smear rod 4 is provided with a slot 43 having a width equal to the thickness of the smear head 2, a rotating shaft extending in the smear direction is passed through the slot 43, and one end of the smear head 2 close to the connecting seat 1 is rotatably arranged in the slot 43 through the rotating shaft. When the position of the slide glass is tilted, the smear head 2 can rotate around the rotating shaft so that the smear surface 21 is always facing the slide glass, further improving the adaptability.

[0040] like Figure 1 and Figure 2 As shown, the smear head 2 is provided with a weight-reducing hole 23 .

[0041] Embodiment 2

[0042] The structural principle of this embodiment is basically the same as that of the first embodiment, except that Figure 5 As shown, the lower end of the smear head 2 is folded back along the smearing direction, and the lower surface of the folded portion is the smearing surface 21. During smearing, the smearing surface 21 is parallel to the upper surface of the slide.

[0043] Embodiment 3

[0044] The structural principle of this embodiment is basically the same as that of the first or second embodiment, except that Figure 6 As shown, the smear surface 21 is inclined relative to the upper surface of the slide, and the intersection line of the surface where the smear surface 21 is located and the upper surface of the slide is perpendicular to the smear direction (the length direction of the slide), that is, the intersection line of the surface where the smear surface 21 is located and the upper surface of the slide extends along the width direction of the slide, and the angle between the smear surface 21 and the upper surface of the slide is greater than 0° and less than 90°, such as 30°, 60° or 45°.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A microbial sample smear pen, characterized in that: The invention comprises a connecting seat (1) and a smear head (2), wherein the smear head (2) is connected to the connecting seat (1) via a retractable connecting assembly, and the end of the smear head (2) away from the connecting seat (1) has a smear surface (21); the connecting assembly comprises a guide cylinder (3) fixed to the connecting seat (1), an axially extending guide hole (31) is provided in the guide cylinder (3), a smear rod (4) is slidably provided in the guide hole (31), the smear head (2) is connected to the smear rod (4), and an elastic member with one end acting on the smear rod (4) is provided in the guide hole (31).

2. The microbial sample smear pen according to claim 1, characterized in that: The end of the guide hole (31) close to the smear head (2) has a limiting step (32), and the end of the smear rod (4) away from the smear head (2) has a limiting stop edge (41), and under the elastic force of the elastic member, the limiting stop edge (41) abuts against the limiting step (32).

3. The microbial sample smear pen according to claim 2, characterized in that: The limiting step (32) is provided with a rotation-stopping plane (33) parallel to the axis of the guide hole (31), and the smear rod (4) is provided with a limiting plane (42) parallel to the axis of the guide hole (31), and the limiting plane (42) is arranged opposite to the rotation-stopping plane (33).

4. The microbial sample smear pen according to claim 1, 2 or 3, characterized in that: The elastic member is a spring (5).

5. The microbial sample smear pen according to claim 1, characterized in that: During smearing, the smear surface (21) is parallel to the upper surface of the slide.

6. The microbial sample smear pen according to claim 5, characterized in that: The smear head (2) is plate-shaped, and the two ends of the long side of the smear surface (21) are respectively provided with raised portions (22) that are raised toward the side away from the connecting seat (1), and the distances from the ends of the two raised portions (22) away from the connecting seat (1) to the smear surface (21) are equal.

7. The microbial sample smear pen according to claim 1 or 6, characterized in that: The smear rod (4) is provided with a slot (43) having a width equal to the thickness of the smear head (2), a rotating shaft extending in the smear direction is passed through the slot (43), and one end of the smear head (2) close to the connecting seat (1) is rotatably arranged in the slot (43) via the rotating shaft.

8. The microbial sample smear pen according to claim 1, characterized in that: The smear head (2) is provided with a weight-reducing hole (23).

9. The microbial sample smear pen according to claim 1, characterized in that: The smear surface (21) is arranged tilted, and during smearing, the smear surface (21) forms an angle with the upper surface of the glass slide that is greater than 0° and less than 90°.

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