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A technique for aseptic operation and inoculation needles, which is applied in the field of inoculation needles to achieve the effect of reducing the probability of contamination, being convenient to use, and avoiding prolonged contact
Inactive Publication Date: 2014-07-30
MAIZE RES INST SHANDONG ACAD OF AGRI SCI
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[0004] In order to solve the phenomenon that after repeated burning of the existing inoculation needle, the residue on the needle makes it difficult for the picked mycelium (bacteria block) to fall off, the present invention provides a method for aseptic operation that is beneficial to mycelia (bacteria block) dropped inoculation needle
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Embodiment 1
[0040] Embodiment one, such as Figure 1 to Figure 14 as shown,
[0041] An inoculation needle for aseptic operation, comprising a handle, a locking end cap, a nickel alloy spring coil, a connecting rod, a slider, a pretension spring, an auxiliary cylinder and a needle body.
[0042] The handle 1 is made of stainless steel, and includes two parts: a handle part 11 and a needle body fixing part 12. Hand-held part 11, as the name suggests, is a hand-held part, made of bakelite with good heat resistance, which is often used in pots and other occasions, needle body fixing part 12 is made of copper or stainless steel rods, in the needle body fixing part A round hole 13 for inserting the needle body 2 is provided at the end of the round hole, and a cross seam 14 is arranged on the rod around the round hole. Through the cooperation of a locking end cap 3, it shrinks and realizes the needle The body is fixed, and the locking form between the two is a buckle. An annular mounting gro...
Embodiment 2
[0051] Embodiment two, such as Figure 15 to Figure 16 As shown, the principle is basically the same as that of Embodiment 1, and its structure is described in detail below:
[0052] An inoculation needle for aseptic operation, comprising a handle, an elastic body, a nickel alloy spring coil, a connecting rod, a slider, a pre-tension spring and a needle body.
[0053] One of the differences from Embodiment 1 is that a circular hole 13' for inserting the needle body of the inoculation is provided at the fixed part, and a conical hole is provided at the fixed part of the circular hole, and a truncated cone is installed in the conical hole. Shaped elastic body 8 preferably adopts a rubber block, and the elastic body fixes the needle body in the round hole through extrusion deformation, and the depth is adjustable, so that the fast fixing of the needle body can be realized.
[0054] The second difference from Embodiment 1 is that the installation position of the connecting rod is...
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Abstract
The invention relates to an inoculating needle used for a sterile operation. The inoculating needle used for the sterile operation comprises a handle, a locking end cover, a nickel alloy spring ring, a connecting rod, a sliding block, a pretight spring and a needle body, wherein a round hole and a cross-shaped seam are formed in a fixed part of the handle, one locking end cover is fastened on the fixed part, one nickel alloy spring ring is sheathed on the upper part of the needle body, one connecting rod is connected with the outer side of the nickel alloy spring ring in a welding way, the connecting rod is penetratively arranged in a groove of the handle along the axial direction, a groove in a mounting part is a pretight spring mounting cavity, an annular secondary auxiliary barrel is sheathed outside a corresponding mounting part, a linear sliding chute and a sliding block are arranged in the axial direction of a secondary barrel, the sliding block is connected with a stirring rod fixed on the connecting rod into a whole by virtue of a fastening structure, and the pre-tight spring can cause that the connecting rod tends to move in the direction far away from one end of the needle body. The sliding block is pushed by virtue of a thumb, so that the nickel alloy spring ring quickly stretches out, a fungus block is fallen off, inoculation time is shortened, long-time contact between a culture medium and the outside air is avoided, and pollution probability is reduced.
Description
technical field [0001] The invention belongs to the field of inoculation needles used in laboratory aseptic operations, in particular to an inoculation needle used in aseptic operations. Background technique [0002] The inoculation needle is an essential tool for picking mycelia and bacterial blocks during inoculation. Commercially available inoculation needles are usually made by adding a section of nickel-chromium alloy inoculation needle (or hook) to the front end of the lead rod, and the hand-held end is covered with Bakelite. [0003] In the aseptic operation, the inoculation needle is burned repeatedly, especially after picking fungal hyphae and bacteria blocks, in order to avoid cross-infection, the medium remaining on the inoculation needle is burned together, and the organic matter in the medium is burned out and remains Part of the residue is on the needle. When the bacteria block is picked again, the bacteria block often sticks to the inoculation needle, and it ...
Claims
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Application Information
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