CN212894663U - Pollution-preventing straw for cell culture - Google Patents

Abstract

The utility model discloses a pollution-proof cell culture straw, which comprises a straw body and a fixing device, wherein the fixing device is detachably arranged on the straw body; the fixing device comprises a sleeve, a contraction rod, a clamping ring and a torsion spring, wherein the upper part of the contraction rod is hinged to the edge of the top of the sleeve through the torsion spring; the top of the contraction rod is higher than that of the sleeve after the contraction rod is vertically retracted; the lower part of the sleeve is provided with a clamping ring used for positioning and clamping the lower end of the contraction rod. The utility model discloses a straw can be fixed at the bottleneck of blake bottle through fixing base device, can prevent that the straw from droing, the nature controlled is good, reduce the pollution risk, reduces the pollution that probably brings the cell culture bottle behind the hand contact straw, and better improvement experiment accuracy reduces the loss that the experiment pollution probably caused.

Description

Pollution-preventing straw for cell culture

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a straw for cell culture who prevents pollution.

Background

Cell culture, i.e. a technology for simulating the physiological environment in vivo and enabling in vitro cells to survive, grow and maintain the structure and the function under the sterile, moderate and rich nutritional conditions. The most important problem in the cell culture process is pollution, which can cause cell death, so that the cell can not be used as a sample for scientific research. However, in cell culture, inevitable contamination is liable to occur during the operation due to the limitation of the relevant instruments, such as when the culture solution is aspirated, for convenience of operation, the method of operation is: put into the blake bottle with the mode of attracting the pipe slope, absorb the culture solution and release, the empty straw often need keep a period in the blake bottle, avoids the culture solution to adhere to on attracting the pipe outer wall simultaneously, so take out and abandon after several times of use. This has the following drawbacks and disadvantages. Firstly, the suction tube and the culture bottle mouth in the prior art have no fixing function, are easy to slip and pollute during operation, and once the suction tube slips, the whole culture solution is polluted by the pollution sources attached to a human body due to the fact that a large number of pollution sources are attached to hands; in addition, the operation needs to keep the suction pipe in the culture bottle for a period of time, and because the suction pipe has no fixed supporting point, and the hands are easy to shake, the pollution risk is increased; further, since the culture flask has different capacities, that is, different suction depths are used for each insertion, there is no fixation between the pipette suction point and the operation point, which is disadvantageous in operation and poor in handling. Therefore, it is necessary to design a pipette for cell culture with good handling property and reduced contamination risk, which has a fixing effect and prevents detachment.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a pollution-preventing straw for cell culture.

In order to achieve the above object, the utility model adopts the following technical scheme:

a cell culture pipette capable of preventing pollution comprises a pipette body and a fixing device, wherein the fixing device is detachably arranged on the pipette body; the fixing device comprises a sleeve, a contraction rod, a clamping ring and a torsion spring, wherein the upper part of the contraction rod is hinged to the edge of the top of the sleeve through the torsion spring; the top of the contraction rod is higher than that of the sleeve after the contraction rod is vertically retracted; the lower part of the sleeve is provided with a clamping ring used for positioning and clamping the lower end of the contraction rod.

The utility model discloses a straw can be fixed at the bottleneck of blake bottle through fixing base device, can prevent that the straw from droing, the nature controlled is good, reduce the pollution risk, reduces the pollution that probably brings the cell culture bottle behind the hand contact straw, and better improvement experiment accuracy reduces the loss that the experiment pollution probably caused.

Further, still include the rubber rope, the middle part position at the shrink pole is fixed to the one end of rubber rope, the other end of rubber rope is fixed in telescopic lower part, blocks the bottleneck of blake bottle through the rubber rope, can satisfy the requirement of different bores.

Furthermore, the sleeve on the circular array be provided with 4 shrink poles, evenly protect all around and play the balancing act.

Furthermore, the turn-over angle of the contraction rod is 90 degrees, the contraction rod is attached to the sleeve and is parallel to the sleeve after being retracted and is clamped in the clamping ring, the contraction rod turns over 90 degrees by the hinge point of the torsion spring to be perpendicular to the sleeve under the action of the torsion spring after being opened, and the top end of the contraction rod abuts against the pipe body of the suction pipe to realize the fixing effect of the fixing device.

Furthermore, the top parcel of shrink pole has one deck rubber, has increased the frictional force that the shrink pole withstood the straw pipe shaft, has guaranteed that fixing device can be firm fix on the straw pipe shaft.

The utility model has the advantages that: the suction pipe designed by the utility model can be fixed and positioned on the bottle mouth of the culture bottle, so that the experimenter can conveniently position and quantitatively operate the suction pipe, the phenomenon that the culture bottle is polluted because the suction pipe is operated for a long time to fall off or the hand touches the bottle mouth of the culture bottle is avoided, and the fatigue of the experimenter can be relieved; the fixing device adopts an automatic locking design, and the top end of the contraction rod can be propped against and tightly clamp the straw tube body under the action of the torsion spring to realize fixed installation only by sleeving the sleeve into the straw and opening the contraction rod, so that the use requirements of different culture bottle mouths can be met; the straw has a simple and practical overall structure, can be conveniently and quickly installed on the straw, and is small in size and cannot occupy too large space after being withdrawn.

Drawings

FIG. 1 is a perspective view of a pipette for cell culture according to the present invention, which is capable of preventing contamination;

FIG. 2 is a perspective view of the fixing device in the pipette for cell culture according to the present invention.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings:

in the description of the present invention, it should be noted that the directions or positional relationships indicated by "upper" and "lower" are the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

As shown in FIGS. 1-2, a pipette for cell culture with contamination prevention comprises a pipette body 1 and a holder 2, wherein the holder 2 is detachably attached to the pipette body 1. The fixing device 2 of the embodiment comprises a sleeve 21, a contraction rod 22, a clamping ring 23, a torsion spring 24 and a rubber rope 25, wherein 4 contraction rods are arranged on the sleeve 21 in a circular array, the upper parts of the contraction rods 22 are hinged to the edge of the top of the sleeve 21 through the torsion spring 24, and the top of the contraction rods 22 is higher than the top of the sleeve 21 after the contraction rods 22 are vertically retracted; the lower part of the sleeve 21 is provided with a clamping ring 23 for positioning and clamping the lower end of the contraction rod 22. One end of the rubber rope 25 is fixed at the middle position of the contraction rod 22, and the other end of the rubber rope 25 is fixed at the lower part of the sleeve 21. The turning angle of the contraction rod 22 of the fixing device 2 is 90 degrees, namely the contraction rod 22 is attached to the sleeve 21 and parallel to the sleeve and clamped in the clamping ring 23 after being retracted, the contraction rod 22 can turn 90 degrees by the hinge point under the action of the torsion spring 24 after being opened, and the top end of the contraction rod 22 can prop against the pipe body of the suction pipe after being turned. In order to increase the fixing effect of the shrinkage rod 22 on the whole fixing device 2, the top end of the shrinkage rod 22 is wrapped by a layer of rubber, and the rubber can increase the friction force with the straw tube body and increase the installation stability of the fixing device.

Although particular embodiments of the present invention have been described and illustrated in detail, it should be noted that various changes and modifications could be made to the above-described embodiments without departing from the spirit of the invention and the scope of the appended claims.

Claims (5)

1. A cell culture pipette capable of preventing pollution comprises a pipette body (1) and a fixing device (2), wherein the fixing device (2) is detachably arranged on a tube body of the pipette body (1);

the device is characterized in that the fixing device (2) comprises a sleeve (21), a contraction rod (22), a clamping ring (23) and a torsion spring (24), wherein the upper part of the contraction rod (22) is hinged on the top edge of the sleeve (21) through the torsion spring (24); the top of the contraction rod (22) is higher than that of the sleeve (21) after the contraction rod is vertically retracted; the lower part of the sleeve (21) is provided with a clamping ring (23) used for positioning and clamping the lower end of the contraction rod (22).

2. The pipette for cell culture capable of preventing contamination according to claim 1, further comprising a rubber string (25), wherein one end of the rubber string (25) is fixed to a middle portion of the contraction rod (22), and the other end of the rubber string (25) is fixed to a lower portion of the sleeve (21).

3. A pipette as claimed in claim 2, characterised in that the sleeve (21) is provided with 4 telescopic rods (22) in a circular array.

4. A contamination prevention pipette for cell culture according to claim 3, wherein the angle of inclination of the contraction rod (22) is 90 °.

5. The pipette for cell culture with prevention of contamination according to claim 4, wherein the top end of the contraction rod (22) is covered with a rubber layer.

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