Blood culture bottle positive sampler

Abstract

The utility model belongs to the field of samplers, particularly relates to a positive sampler for a blood culture bottle, and aims to solve the problem that a sample splashes or laboratory personnel are injured during sampling due to the fact that the conventional sampler cannot release positive and negative pressure generated by bacterial reproduction in the blood culture bottle, the following scheme is provided: the positive sampler comprises a needle cylinder, one end of the needle cylinder is detachably and fixedly communicated with a connecting cylinder, one side of the connecting cylinder is fixedly communicated with a connecting pipe, and a sealing ring is embedded in an inner ring of the front end of the connecting cylinder; the adjusting assembly is arranged on the connecting pipe and is used for releasing the pressure in the blood culture bottle. Through the arrangement of the adjusting assembly, pressure in the blood culture bottle is released, and the release speed of the pressure is effectively controlled, so that the accuracy and the safety of sample extraction are improved, sample pollution or overflow caused by pressure mutation is avoided, and the smooth sampling process and the sample quality are ensured.

Description

Technical Field

[0001] This utility model relates to the field of sampler technology, and in particular to a positive sampler for blood culture bottles. Background Technology

[0002] A blood culture bottle is a test tube specifically designed to detect bacterial or fungal infections in the blood. Fresh blood is placed in a bottle containing a culture medium, and under specific culture conditions, the microorganisms in the blood are allowed to grow rapidly, enabling diagnosis and analysis to diagnose and treat various diseases related to blood infections.

[0003] Currently, the microbiology laboratory in the clinical laboratory uses ordinary syringes to directly puncture blood culture positive sample bottles and when drawing samples from blood culture bottles. However, due to the positive or negative pressure generated by bacterial growth inside the blood culture bottle, the syringe plunger can be pushed out when there is positive pressure, causing the blood culture bottle sample to splash and contaminate the biosafety cabinet. When there is negative pressure, it is impossible to draw samples. During the operation, laboratory personnel are easily pricked by the syringe needle. At the same time, the puncture needle tip does not have corresponding protection, which can easily lead to occupational exposure risks for operators. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to release the positive and negative pressure generated by bacterial growth inside the blood culture bottle, which leads to sample splashing or injury to laboratory personnel during sampling, and the lack of corresponding protection for the puncture needle tip, which easily leads to occupational exposure risks for operators. Therefore, a positive sampler for blood culture bottles is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positive sampler for blood culture bottles, comprising:

[0007] A syringe, one end of which is detachably and fixedly connected to a connecting tube, one side of which is fixedly connected to a connecting tube, and a sealing ring is embedded in the inner ring of the front end of the connecting tube;

[0008] An adjustment component is located on the connecting tube and is used to release pressure inside the blood culture bottle.

[0009] In one possible design, the adjusting assembly comprises a fixing seat fixedly arranged at the top of the connecting pipe, a sealing plate rotatably arranged inside the connecting pipe, a rotating rod rotatably arranged at the top of the fixing seat, a rubber ring arranged outside the rotating rod and inside the fixing seat, the bottom end of the rotating rod rotatably penetrating the connecting pipe and fixedly connected with the sealing plate, a rotating handle fixedly arranged at one end of the rotating rod, an indicating arrow fixedly arranged at the bottom of the rotating handle at the rear side, a scale arranged at the top of the fixing seat at one fourth of the fixing seat, and the indicating arrow corresponding to the position of the scale.

[0010] In one possible design, the top of the fixing seat is symmetrically fixedly arranged with two lower limit blocks, the bottom of the rotating handle is symmetrically fixedly arranged with two upper limit blocks, and the two lower limit blocks correspond to the positions of the upper limit blocks and are movably abutted.

[0011] In one possible design, the inner wall of the connecting pipe is fixedly arranged with baffles at both sides, the two baffles are respectively arranged at the front and rear sides of the sealing plate, and the baffles are fixedly arranged with sealing pads at the sides close to the sealing plate.

[0012] In one possible design, one end of the connecting pipe is threadedly connected with a pipe column, the connecting pipe is in communication with the pipe column, the inside of the pipe column is detachably arranged with a filter core, the rear end of the pipe column is fixedly arranged with a cross-shaped stopper at the inner ring, and the inner ring of the pipe column is fixedly arranged with four spring sheets in a rectangular shape.

[0013] In one possible design, the rear end of the connecting cylinder is detachably fixedly connected with a needle, and the outside of the needle is fixedly sleeved with a protective cover.

[0014] In the present application, when starting to use, first, all the components used are taken into a biological safety cabinet, and then the installation of the needle cylinder, the connecting cylinder, the needle and the protective cover thereon is performed, the connecting cylinder is first installed on the needle cylinder, and then one end of the needle with the protective cover is installed on the connecting cylinder.

[0015] Then the blood culture bottle is taken out, at this time, the rotating handle is slightly rotated, the rotating handle drives the rotating rod to rotate, the rotating rod drives the sealing plate to rotate in the connecting pipe, in the process of rotating the rotating handle, the position of the indicating arrow on the scale is observed, the opening degree of the sealing plate is adjusted as needed to control the pressure release speed in the blood culture bottle, the rotating handle is slightly rotated to drive the sealing plate to open a small gap, then the needle is inserted into the sealing plug of the blood culture bottle, at this time, the front part (the puncture end) of the blood culture bottle is located in the protective cover, so that the connecting cylinder and the connecting pipe are connected with the blood culture bottle through the needle, when the pressure in the blood culture bottle is too large, the pressure in the blood culture bottle is discharged from the inside of the connecting pipe to the pipe column, and filtered through the filter element and then discharged, if the pressure in the blood culture bottle is negative pressure, air is filtered through the filter element and then sucked into the pipe column, and then the rotating handle is slowly rotated to drive the sealing plate to slowly open, so that the gap between the sealing plate and the connecting pipe slowly increases (to avoid opening a large gap at one time, so that the sample in the blood culture bottle is sucked out under the action of pressure, the filter element is polluted, and the sample overflows from the filter element), in the process, the speed of rotating the rotating handle can be adjusted by observing the position of the indicating arrow on the scale, the gap between the sealing plate and the connecting pipe is increased to release the pressure in the blood culture bottle to the maximum, when the lower limit block and the upper limit block abut, the surface opening is in the maximum position, and the rotation of the rotating handle is stopped;

[0016] When the pressure in the blood culture bottle is released and consistent with the external pressure, the rotating handle is reversely rotated to drive the sealing plate to reset through the rotating rod, at this time, the two sides of the sealing plate abut against the two sealing pad driving baffles to seal the connecting pipe, and the other surfaces of the lower limit block and the upper limit block abut to limit the position of the rotating handle, then the piston of the needle cylinder is slowly pulled, and the sample in the blood culture bottle is extracted into the needle cylinder through the needle and the connecting cylinder;

[0017] When the filter element needs to be replaced, the pipe column is first detached from the connecting cylinder, then the filter element is pushed out of the pipe column through the gap of the cross-shaped blocking frame by the rod-shaped object, and then a new filter element is pressed into the pipe column, and the filter element pressed into the pipe column is limited in position by the spring sheet.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the adjustment assembly is arranged to release the pressure in the blood culture bottle and effectively control the release speed, so that the accuracy and safety of sample extraction are improved, sample pollution or overflow caused by pressure mutation is avoided, and the sampling process is ensured to be smoothly carried out and the sample quality is ensured.

[0020] The utility model discloses a protective cover is set up, realize the protection to the user when the needle is in puncture blood culture bottle, can prevent sampling needle to stab the operator when taking the sample in blood culture bottle, can effectively avoid the personnel stab the risk of the operation mistake. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a whole structure schematic diagram of blood culture bottle positive sampler is provided;

[0022] Figure 2 The utility model discloses a whole separation structure schematic diagram of blood culture bottle positive sampler is provided;

[0023] Figure 3 The utility model discloses a connecting pipe and pipe column separation structure schematic diagram of blood culture bottle positive sampler is provided;

[0024] Figure 4 The utility model discloses a connecting pipe and pipe column separation structure schematic diagram of blood culture bottle positive sampler is provided;

[0025] Figure 5 The utility model discloses a connecting pipe and pipe column separation structure schematic diagram of blood culture bottle positive sampler is provided.

[0026] In the drawing: 1, needle cylinder;2, connecting cylinder;201, sealing ring;3, connecting pipe;4, fixed seat;5, rotating rod;6, sealing plate;7, rotating handle;8, indication arrow;9, scale;10, lower limit block;11, upper limit block;12, baffle;13, pipe column;14, filter core;15, cross blocking frame;16, spring piece;17, needle;18, protective cover. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Embodiment one

[0029] Reference Figures 1-5 A sampler, comprising:

[0030] Needle cylinder 1, connecting cylinder 2, connecting pipe 3 and adjusting assembly, needle cylinder 1 as the main part of sampler, and one end is connected with connecting cylinder 2 through thread or other detachable fixed mode, and the subsequent needle 17 is connected, and one side of connecting cylinder 2 is fixedly connected with connecting pipe 3, is used for being connected with blood culture bottle or other to be sampled container, and in the inner ring of the front end of connecting cylinder 2, sealing ring 201 is embedded and is arranged, to ensure the sealing property of connecting place, prevent gas or liquid leakage.

[0031] The adjusting assembly is arranged on the connecting pipe 3, and is used for releasing the pressure in the blood culture bottle, so that the sampling is more smooth. The adjusting assembly comprises a fixed seat 4 fixedly arranged on the top of the connecting pipe 3, which serves as a support and fixing structure and ensures the stability of the adjusting assembly. A sealing plate 6 is rotatably arranged in the connecting pipe 3, and is used for controlling the opening and closing of the connecting pipe 3, so as to adjust the pressure in the blood culture bottle. A rotating rod 5 is rotatably arranged through the fixed seat 4 and connected with the sealing plate 6, and is used for controlling the rotation of the sealing plate 6. The rotating rod 5 is sleeved with a rubber ring on the outside in the fixed seat 4, so as to provide damping effect and prevent the rotating rod 5 from rotating accidentally. A rotating handle 7 is fixedly arranged on one end of the outside of the rotating rod 5, so as to facilitate the user to operate. An indicating arrow 8 is fixedly arranged on the bottom of the rear side of the rotating handle 7, and is used for indicating the rotation angle of the rotating rod 5. A scale 9 is arranged on the top of the fixed seat 4, and corresponds to the position of the indicating arrow 8. The user can observe the position of the indicating arrow 8 on the scale 9 to determine the rotation degree of the rotating rod 5, so as to accurately control the opening degree of the sealing plate 6.

[0032] Two lower limit blocks 10 are symmetrically fixedly arranged on the top of the fixed seat 4. Two upper limit blocks 11 are symmetrically fixedly arranged on the bottom of the rotating handle 7. The positions of the two lower limit blocks 10 and the upper limit blocks 11 are staggered and correspond to each other and are movably abutted, and are used for limiting the rotation range of the rotating handle 7 and the sealing plate 6, so as to prevent the sealing plate 6 from being damaged or unable to seal the connecting pipe 3 due to excessive rotation.

[0033] Two baffles 12 are fixedly arranged on the inner walls of the connecting pipe 3, and are respectively located on the front and rear sides of the sealing plate 6, so as to prevent the sealing plate 6 from deviating after being reset and affecting the sealing. The side of the baffle 12 close to the sealing plate 6 is fixedly provided with a sealing gasket, so as to further enhance the sealing effect and ensure the air tightness of the connecting pipe 3 when the sealing plate 6 is closed.

[0034] A pipe column 13 is threadedly connected to one end of the connecting pipe 3, and is communicated with the connecting pipe 3, and is used for further processing the liquid obtained by sampling. A filter element 14 (ultra-high molecular weight polyethylene sintered filter element) is detachably arranged in the pipe column 13, and is used for filtering the air entering and exiting the blood culture bottle, and avoiding aerosol pollution of the biological safety cabinet and infection of personnel. A cross-shaped stopper 15 and four spring sheets 16 are fixedly arranged on the inner ring of the rear end of the pipe column 13, and are used for limiting the position of the filter element 14 and facilitating the dismounting and replacement of the filter element 14.

[0035] The application can be used in the technical field of blood culture bottle positive sampler, and can also be used in other fields applicable to the application.

[0036] Example two

[0037] On the basis of embodiment one, embodiment two further comprises: a blood culture bottle positive sampler, which is applied to the technical field of blood culture bottle positive sampler, and a rear end of the connecting cylinder 2 is detachably fixedly connected with the needle 17, and the needle 17 is used for inserting into a blood culture bottle or other containers to be sampled.

[0038] The outer fixing sleeve of the needle 17 is provided with the protective cover 18, which can prevent the sampler from being stabbed by the needle when the sample in the blood culture bottle is taken.

[0039] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A blood culture bottle positive sampler, comprising: The utility model provides a blood culture bottle pressure release device, including: A needle cylinder (1) is detachably fixed at one end and is communicated with a connecting cylinder (2), one side of the connecting cylinder (2) is fixed and communicated with a connecting pipe (3), and a sealing ring (201) is embedded in the inner ring of the front end of the connecting cylinder (2). An adjusting assembly is arranged on the connecting pipe (3) and is used to release the pressure in the blood culture bottle.

2. A blood culture bottle positive sampler according to claim 1, wherein, The adjusting assembly comprises a fixed seat (4) fixed at the top of the connecting pipe (3), a sealing plate (6) rotatably arranged in the connecting pipe (3), a rotating rod (5) rotatably arranged at the top of the fixed seat (4), a rubber ring sleeved on the outside of the rotating rod (5) and located in the fixed seat (4), the bottom end of the rotating rod (5) rotatably penetrating the connecting pipe (3) and fixedly connected with the sealing plate (6), a rotating handle (7) fixedly arranged at one end of the rotating rod (5) located on the outside, an indicating arrow (8) fixedly arranged at the bottom of the rotating handle (7) located on the rear side, a scale (9) arranged at one fourth of the top of the fixed seat (4), and the indicating arrow (8) corresponds to the position of the scale (9).

3. A blood culture bottle positive picker according to claim 2, wherein, The top of the fixed seat (4) is symmetrically fixed with two lower limit blocks (10), the bottom of the rotating handle (7) is symmetrically fixed with two upper limit blocks (11), and the two lower limit blocks (10) and the upper limit blocks (11) are staggered and correspondingly movable.

4. A blood culture bottle positive picker according to claim 2, wherein, The inner wall of the connecting pipe (3) is fixedly provided with baffles (12) on both sides, the two baffles (12) are respectively located on the front and rear sides of the sealing plate (6), and the baffles (12) are fixedly provided with sealing pads on the side close to the sealing plate (6).

5. A blood culture bottle positive picker according to claim 1, wherein, One end of the connecting pipe (3) is threadedly connected with a pipe column (13), the connecting pipe (3) is communicated with the pipe column (13), the inside of the pipe column (13) is detachably provided with a filter core (14), the rear end of the pipe column (13) is fixedly provided with a cross-shaped blocking frame (15), and the inner ring of the pipe column (13) is fixedly provided with four spring sheets (16).

6. A blood culture bottle positive sampler according to claim 1, wherein, The rear end of the connecting cylinder (2) is detachably fixedly communicated with a needle (17), and the outside of the needle (17) is fixedly sleeved with a protective cover (18).

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