LIQUID SAMPLE SAMPLING DEVICE USED IN OPERATION

Abstract

Provided is a liquid sample sampling device used in an operation, and belongs to the technical field of sampling devices. The sampling device includes a negative pressure suction head, an auxiliary tube connected with a side wall of the negative pressure suction head, and a sampling bottle connected with the auxiliary tube. A rebound connecting plate is arranged at a position connecting the negative suction head and the auxiliary tube. The side wall of the negative pressure suction head is provided with a push switch. A diameter of the auxiliary tube is larger than a diameter of the negative pressure suction head. The push switch is an elastic membrane switch.

Claims

1. A liquid sample sampling device used in an operation, comprising a negative pressure suction head, an auxiliary tube connected with a side wall of the negative pressure suction head, and a sampling bottle connected with the auxiliary tube; wherein a rebound connecting plate for communicating and closing the negative pressure suction head is arranged at a position connecting the negative pressure suction head and the auxiliary tube; the side wall of the negative pressure suction head is provided with a push switch capable of opening and closing the rebound connecting plate; a diameter of the auxiliary tube is larger than a diameter of the negative pressure suction head; the push switch is an elastic membrane switch; when the elastic membrane switch is pressed, a soft membrane on the elastic membrane switch moves in a direction of the rebound connecting plate, and is used to block a flow of liquid and drive the rebound connecting plate to open, making the auxiliary tube communicated with the negative pressure suction head; and when the elastic membrane switch is released, the soft membrane returns to an original position, the liquid flows in the negative pressure suction head, the rebound connecting plate returns to an original position, and the auxiliary tube is not communicated with the negative pressure suction head.

2. The liquid sample sampling device used in the operation according to claim 1, wherein the soft membrane is provided with a protrusion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 is a schematic structural view of a push switch in a closed state according to the disclosure.

[0031] FIG. 2 is a schematic structural view of a push switch in an open state according to the disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In the following, technical schemes in embodiments of the disclosure may be clearly and completely described with reference to attached drawings. Obviously, the described embodiments are only a part of the embodiments of the disclosure, but not all embodiments. Based on the embodiments in the disclosure, all other embodiments obtained by ordinary technicians in the field without a creative labor belong to a scope of protection of the disclosure.

[0033] In a description of the disclosure, it should be noted that azimuth or positional relationships indicated by terms upper, lower, inner, outer and top/bottom are based on azimuth or positional relationships shown in the attached drawings, and are only for the convenience of describing the disclosure and simplifying the description, and does not indicate or imply that a referred device or an element must have a specific orientation, be constructed and operated in a specific orientation, therefore it may not be understood as a limitation of the disclosure. In addition, terms first and second are only used for descriptive purposes and may not be understood as indicating or implying relative importance.

[0034] In the description of the disclosure, it should be noted that unless otherwise specified and limited, terms installed, provided, sheathed/sleeved and connected should be broadly understood. For example, connected may be fixedly connected, detachably connected or integrated, may be mechanically connected or electrically connected, may be directly connected, may also be indirectly connected through an intermediate medium, and may be connected inside two elements. For those skilled in the art, specific meanings of the above terms in the disclosure may be understood in specific situations.

[0035] As shown in FIG. 12, the disclosure provides a liquid sample sampling device used in an operation, including a negative pressure suction head 1, an auxiliary tube 2 connected with a side wall of the negative pressure suction head 1, and a sampling bottle 3 connected with the auxiliary tube 2.

[0036] A rebound connecting plate 5 for communicating and closing the negative pressure suction head 1 is arranged at a position connecting the negative suction head 1 and the auxiliary tube 2.

[0037] The side wall of the negative pressure suction head 1 is provided with a push switch capable of opening and closing the rebound connecting plate 5.

[0038] A diameter of the auxiliary tube 2 is larger than a diameter of the negative pressure suction head 1.

[0039] The push switch is an elastic membrane switch 4.

[0040] When the elastic membrane switch 4 is pressed, a soft membrane on the elastic membrane switch 4 moves in a direction of the rebound connecting plate 5, and is used to block a flow of liquid and drive the rebound connecting plate 5 to open, making the auxiliary tube 2 communicated with the negative pressure suction head 1.

[0041] When the elastic membrane switch 4 is released, the soft membrane returns to an original position, the liquid flows in the negative pressure suction head 1, the rebound connecting plate 5 returns to an original position, and the auxiliary tube 2 is not communicated with the negative pressure suction head 1.

[0042] In the disclosure, the soft membrane is provided with a protrusion 6.

[0043] In the disclosure, a sampling part is a circular tube.

[0044] In the sampling device provided by the disclosure, the elastic membrane switch 4 may be a section of soft membrane arranged on a tube wall of the negative pressure suction head 1, and the soft membrane has elasticity. When the soft membrane is pressed, the flexible membrane moves in the direction of the rebound connecting plate 5, so that the flexible membrane contacts the rebound connecting plate 5, and then the rebound connecting plate 5 moves in the auxiliary tube 2 to make the auxiliary tube 2 communicate with the negative pressure suction head 1.

[0045] The soft membrane has a blocking effect on the liquid flowing in the negative pressure suction head 1 to block a linear movement of the liquid attracted by the negative pressure suction head 1, so that the attracted liquid changes its moving direction in a section of the auxiliary tube. At this time, the liquid flows into the auxiliary tube 2. Since the diameter of the auxiliary tube 2 is larger than the diameter of the negative pressure suction head 1, a flow rate may be slowed down because a cross-sectional area becomes larger at this time. When the flow rate is reduced enough, gas and the liquid may be separated due to gravity and inertia. A liquid sample separated from the sampling bottle 3 is used for related tests, cultures, etc.

[0046] The soft membrane on the elastic membrane switch 4 may also be provided with the protrusion 6, which is more convenient to use. Among them, the rebound connecting plate 5 may be made of rubber or latex, so the rebound connecting plate 5 has certain elasticity and may automatically rebound, making the auxiliary tube 2 and the negative pressure suction head 1 closed and not communicated.

[0047] The above is only a preferred embodiment of the disclosure. However, a protection scope of the disclosure is not limited to this. Any equivalent substitution or change made by any person skilled in the art, within a technology scope disclosed herein, in accordance with the technical schemes of the disclosure and its improved conception, shall be covered by the protection scope of the disclosure.