A vaccination needle with a needle head that is easy to replace

Abstract

The utility model relates to clinical microbiological inoculation technical field, and its in order to solve the problem that the existing inoculation needle cannot replace the needle, needs to carry out burning sterilization operation, time -consuming and labor -saving, and there are biological safety hidden trouble, the utility model provides an inoculation needle convenient for replacing needle, including needle body, casing, conical head and elastic ferrule, casing communicates with conical head, the conical head includes the retraction part, the retraction part includes a plurality of independent clamping petal, a plurality of clamping petal all extend along the axial direction, needle body passes through the casing and goes out a plurality of clamping petal, elastic ferrule is equipped with in the outside of a plurality of clamping petal, the utility model discloses through modularization quick change design, provides the inoculation needle convenient for replacing needle, spares the existing burning sterilization complicated operation, realizes needle head use and discard, avoids cross -contamination and improves the inoculation efficiency, and also convenient according to the use habit of different operators, and the specific scene when inoculating, the length of needle body inoculation end is controlled flexibly, is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of clinical microbial inoculation technology, and more specifically, to an inoculation needle with an easy-to-change needle tip. Background Technology

[0002] Inoculation needles are widely used tools in microbiology and medicine, typically used to transfer solid media between petri dishes or other solid media. They are suitable for removing small colonies of microorganisms from samples and are commonly used for streak isolation and puncture inoculation of samples containing bacteria and fungi. During inoculation, the needle must be sterilized by flame at high temperatures before the next inoculation or the first use to prevent cross-contamination between samples. This is because existing universal inoculation needles consist of an operating handle, a connecting rod, and a needle body, with the needle tip being fixed and non-replaceable. To avoid cross-contamination, standardized flame sterilization procedures are required, especially to ensure thorough sterilization, which necessitates repeated adjustments to the flame angle. This process is inefficient and may result in incomplete sterilization. Furthermore, the fixed-length needle cannot accommodate different petri dish depths (e.g., 90mm petri dishes and 15mm slides), requiring the use of multiple sizes of inoculation needles, increasing consumable costs. The flame process may also generate microbial aerosols, which does not meet the biosafety requirements of BSL-2 laboratories.

[0003] Based on the above description, there is an urgent need for a needle that is easy to reuse, avoids cross-contamination, and is easy to replace. Utility Model Content

[0004] The purpose of this invention is to provide an inoculation needle that is easy to replace, in order to solve the technical problems of existing inoculation needles, which cannot replace the needle, require flaming sterilization, are time-consuming and laborious, and have the possibility of incomplete sterilization.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] An inoculation needle with easy needle replacement includes a needle body, a housing, a conical head, and an elastic collar; the housing is in communication with the conical head; the conical head includes a constriction portion; the constriction portion includes multiple independent clamping flaps; the multiple clamping flaps all extend in an axial direction; the needle body passes through the housing and extends out of the multiple clamping flaps; the elastic collar is sleeved on the outside of the multiple clamping flaps.

[0007] Preferably, the outer wall of the conical head is provided with multiple protrusions spaced apart; the elastic collar is provided with multiple first-opening grooves for the multiple protrusions to be respectively inserted.

[0008] Preferably, the elastic collar is provided with a plurality of operating blocks; the operating blocks extend away from the conical head.

[0009] Preferably, the housing is fitted with a retaining ring; the retaining ring is located at one end of the plurality of protrusions away from the clamping petals.

[0010] Preferably, the device also includes an elastic cover; the inner wall of the elastic cover is provided with a plurality of second opening grooves corresponding to the protrusion.

[0011] Preferably, the clamping flap has an arc-shaped sidewall on the side away from the elastic collar.

[0012] Preferably, the needle body is recessed with a plurality of cutting ring grooves; the plurality of cutting ring grooves are spaced apart.

[0013] Preferably, the cross-section of the cutting annular groove is V-shaped, U-shaped, or semi-circular.

[0014] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0015] In this invention, the needle body has a certain length, part of which is housed in the shell and the other part protrudes through the conical head. After each use, it can be directly cut off and discarded with a utility knife, eliminating the cumbersome operation of existing flaming sterilization. This allows the needle to be used and discarded immediately, avoiding cross-contamination and improving inoculation efficiency. It also makes it easy to flexibly control the length of the inoculation end of the needle body according to the usage habits of different operators and the specific scenario of inoculation, which is very convenient.

[0016] The needle body, extending from the conical head, is held and fixed by multiple independent clamping flaps. These flaps are controlled by elastic collars to adjust the distance between them, thereby regulating the tightness of the clamping and releasing or securing the needle body. This allows for precise adjustment of the inoculation end length, significantly improving the safety and efficiency of microbial inoculation operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of local structure A in the middle;

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of local structure B in the middle;

[0020] Figure 4 This is a schematic diagram showing the spacing distribution of multiple clamping petals in this utility model.

[0021] Icons: 1-Needle body, 2-Shell, 3-Conical head, 31-Clamping flap, 311-Arc-shaped sidewall, 4-Elastic collar, 5-Protruding strip, 6-Operating block, 7-Stop ring, 8-Elastic cover, 9-Cutting ring groove. Detailed Implementation

[0022] The specific implementation method is described below with reference to the accompanying drawings.

[0023] Example 1

[0024] Please see Figures 1 to 4 The present invention provides the following technical solution: an inoculation needle that is easy to replace, suitable for situations where it can be reused without sterilization by burning.

[0025] Specifically, such as Figures 1 to 4 As shown, an inoculation needle that facilitates needle replacement includes a needle body 1, a housing 2, a conical head 3, and an elastic collar 4; the housing 2 is connected to the conical head 3; the conical head includes a constriction section; the constriction section includes multiple independent clamping flaps 31; the multiple clamping flaps 31 all extend in the axial direction; the needle body 1 passes through the housing 2 and extends out of the multiple clamping flaps 31; the elastic collar 4 is sleeved on the outside of the multiple clamping flaps 31.

[0026] In this embodiment, the needle body 1 has a certain length, part of which is housed in the shell 1, and the other part protrudes through the conical head 3. After each use, it can be directly cut off and discarded with a utility knife, eliminating the cumbersome operation of existing incineration sterilization, improving the efficiency of inoculation, and also making it convenient to flexibly control the length of the inoculation end of the needle body 1 according to the usage habits of different operators and the specific scenario of inoculation. The end of the needle body 1 that protrudes through the conical head 3 is clamped and fixed by multiple independent clamping flaps 31, and the distance between the multiple clamping flaps 31 is controlled by the elastic collar 4, thereby adjusting the tightness of clamping the needle body 1 and realizing the release and fastening of the needle body 1.

[0027] In this embodiment, the side wall of the housing 2 is provided with a viewing window to facilitate observation of the length of the internal needle 1; in addition, a plug is provided at the end of the housing 2 away from the conical head 3. The plug has a certain length and is embedded inside the housing 2. It can be used to assist in pushing the needle 1 through and at the same time prevent the needle 1 from slipping out of the housing 2.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the outer wall of the conical head 3 is provided with multiple protrusions 5 at intervals; the elastic collar 4 is provided with multiple first-opening grooves for the multiple protrusions 5 to be inserted respectively.

[0029] In this embodiment, multiple first-opening grooves are embedded in multiple protruding strips 5, which serve as guides to ensure quick and accurate operation during the adjustment of the clamping force of the needle body 1.

[0030] Specifically, such as Figure 1 and Figure 2As shown, the elastic collar 4 is provided with multiple operating blocks 6; the operating blocks 6 extend away from the conical head 3.

[0031] In this embodiment, multiple operating blocks 6 facilitate manual force application to control the elastic collar 4 to slide along the protrusion 5.

[0032] Specifically, such as Figure 2 As shown, the housing 2 is fitted with a retaining ring 7; the retaining ring 7 is located at one end of the multiple protrusions 5 away from the clamping petals 31.

[0033] In this embodiment, a retaining ring 7 is used to prevent the elastic collar 4 from slipping off the top of the protrusion 5 or even sliding onto the housing 2 due to improper operation.

[0034] Specifically, such as Figure 1 As shown, it also includes an elastic cover 8; the inner wall of the elastic cover 8 is provided with a plurality of second opening grooves corresponding to the protrusions 5.

[0035] In this embodiment, an elastic cover 8 is used to protect the needle body 1 when the inoculation needle is not in use, and to prevent the storage environment from contaminating the needle body 1. In addition, the elastic cover 8 and the elastic collar 4 are both made of materials commonly used in the art, such as silicone or elastic rubber.

[0036] Specifically, such as Figure 4 As shown, the clamping petal 31 has an arc-shaped sidewall 311 on the side away from the elastic collar 4.

[0037] In this embodiment, by setting an arc-shaped sidewall 311, it is easier to fit more closely to the outside of the needle body 1, thereby improving the stability of the clamping and facilitating the release of the needle body 1.

[0038] Specifically, such as Figure 3 As shown, the needle body 1 is recessed with multiple cutting ring grooves 9; the multiple cutting ring grooves 9 are spaced apart.

[0039] In this embodiment, the cross-section of the cutting annular groove 9 is V-shaped, U-shaped, or semi-circular; by setting the cutting annular groove 9, it is easy to remove the material.

Claims

1. A vaccination needle facilitating needle change, characterized in that: It includes a needle body (1), a housing (2), a conical head (3), and an elastic collar (4); the housing (2) is connected to the conical head (3); the conical head includes a constriction portion; the constriction portion includes multiple independent clamping flaps (31); the multiple clamping flaps (31) all extend in the axial direction; the needle body (1) passes through the housing (2) and extends out of the multiple clamping flaps (31); the elastic collar (4) is sleeved on the outside of the multiple clamping flaps (31).

2. The needle of claim 1, wherein: The outer wall of the conical head (3) is provided with multiple protrusions (5) spaced apart; the elastic collar (4) is provided with multiple first open grooves for the multiple protrusions (5) to be inserted respectively.

3. The needle of claim 2, wherein: The elastic collar (4) is provided with a plurality of operating blocks (6); the operating blocks (6) extend away from the conical head (3).

4. The needle of claim 2, wherein: The housing (2) is fitted with a retaining ring (7); the retaining ring (7) is located at one end of the plurality of protrusions (5) away from the clamping petals (31).

5. The needle of claim 4, wherein: It also includes an elastic cover (8); the inner wall of the elastic cover (8) is provided with a plurality of second opening grooves corresponding to the protrusion (5).

6. The lancing device of any one of claims 1 to 5, wherein: The clamping petal (31) has an arc-shaped sidewall (311) on the side away from the elastic collar (4).

7. The needle of claim 6, wherein: The needle body (1) is recessed with a plurality of cutting ring grooves (9); the plurality of cutting ring grooves (9) are spaced apart.

8. The needle of claim 7, wherein: The cross-section of the cutting annular groove (9) is V-shaped, U-shaped or semi-circular.

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