Cleaning trocar

Abstract

The utility model belongs to the technical field of experimental instruments, and provides a cleaning trocar which comprises an inner needle tube and an outer sleeve fixedly sleeved on the periphery of the inner needle tube, and the inner needle tube penetrates through the front end of the outer sleeve and extends outwards. The front end of the outer sleeve is provided with a cleaning cavity formed by the inner wall of the outer sleeve and the outer wall of the inner needle tube, and a first liquid spraying hole communicated with the cleaning cavity; the inner needle tube is provided with a liquid guide opening communicating an inner cavity of the inner needle tube with the cleaning cavity and a blocking piece movably arranged in the inner cavity of the inner needle tube. The cleaning trocar provided by the utility model can be used for cleaning a sample container and an experiment container, has a simple structure, is convenient to use, can be used for washing the inner wall of the container, has a good cleaning effect, and reduces the consumption of a cleaning reagent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to experimental apparatus technical field, especially relate to a cleaning needle cover. BACKGROUND

[0002] At present, the cleaning of sample containers or experimental containers generally uses droppers or cleaning needles with a structure similar to that of syringe needles, such as ampoules, nitrogen blow tubes, solid-phase extraction instrument receiving bottles, and colorimetric tubes. Since the liquid outlet of the cleaning needle is located at the front end, the sprayed cleaning reagent can only flush the bottom of the container, but cannot effectively flush and clean the inner wall of the container, resulting in that the inner wall of the container cannot be cleaned completely, and even some impurities may adhere to the inner wall of the container, which seriously affects the cleaning effect. In addition, the use of existing droppers or cleaning needles consumes a large amount of cleaning reagent during the cleaning process of the inner wall of the container. In order to ensure complete cleaning, a large amount of cleaning reagent is often used to reciprocally flush the container, resulting in a large consumption of cleaning reagent, increased cleaning cost, and reduced cleaning efficiency.

[0003] Therefore, there is a need to design a cleaning needle cover that can effectively solve the above problems and defects. SUMMARY

[0004] The utility model discloses to solve above technical problem, propose a kind of cleaning needle cover, it can be used for the cleaning of sample container and experimental container, structure is simple and practical, and it is convenient to use, can flush the inner wall of container, and cleaning effect is good and reduces the use consumption of cleaning reagent.

[0005] The technical scheme of the utility model is:

[0006] The utility model discloses a kind of cleaning needle cover, including inner needle tube and fixedly sleeved outer sleeve pipe in inner needle tube outer periphery, the inner needle tube is through the outer sleeve pipe front end and extends outward;

[0007] The outer sleeve pipe front end is provided with the cleaning cavity formed by outer sleeve pipe inner wall and inner needle tube outer wall, and the first liquid injection hole being communicated with the cleaning cavity;

[0008] The inner needle tube is provided with the liquid guide opening being communicated with the inner cavity and the cleaning cavity, and the obturator being movably arranged in the inner cavity of inner needle tube.

[0009] Preferably, the obturator includes a center column coaxially arranged with the inner needle tube, a baffle fixedly arranged at the outer edge of the center column, and a spring movably sleeved around the outer periphery of the center column.

[0010] The baffle is arranged opposite to the liquid guide opening, and the top end of the spring is fixedly connected with the inner needle tube, and the bottom end is fixedly connected with the baffle.

[0011] Preferably, the inner needle tube inner wall is provided with an upper ring seat located above the liquid guide hole and a lower ring seat located below the liquid guide hole;

[0012] The upper ring seat is fixedly connected with the top end of the spring, and the lower ring seat is provided with a slot matched with the blocking strip.

[0013] Preferably, the first liquid injection hole is provided with a plurality of first liquid injection holes which are uniformly and interval arranged along the circumferential direction.

[0014] The liquid guide hole and the blocking strip are both provided with a plurality of holes which are uniformly and interval arranged along the circumferential direction.

[0015] Preferably, the outer sleeve is provided with an arc-shaped part at the front end of the outer sleeve, and the arc-shaped part is provided with a plurality of second liquid injection holes which are interval arranged.

[0016] The second liquid injection hole is communicated with the cleaning cavity, and the included angle between the second liquid injection hole and the inner needle tube axis is an acute angle.

[0017] Preferably, the inner needle tube and the outer sleeve are connected in an integrated structure.

[0018] Preferably, the cleaning needle further comprises a syringe, and the rear end of the outer sleeve is provided with a tail interface matched with the syringe.

[0019] Compared with the prior art, the cleaning needle has the following advantages and effects:

[0020] (1) The outer sleeve provided with the cleaning cavity and the first liquid injection hole at the front end is adopted, the first liquid injection hole arranged on the side wall of the outer sleeve can be used to flush and clean the inner side wall of the container to be cleaned, the cleaning of the inner wall of the container is comprehensive and thorough, and the adhesion of impurities on the inner side wall of the container is avoided, and the cleaning effect is improved.

[0021] (2) The sealing element movably arranged in the inner cavity of the inner needle tube is adopted, the communication state of the inner cavity of the inner needle tube is changed by the movement of the sealing element, when the sealing element moves upward, the whole inner cavity of the inner needle tube is in a communication state and is isolated from the cleaning cavity, and the cleaning reagent is used for suction and supplement, when the sealing element moves downward, the rear end of the inner needle tube is in a communication state with the cleaning cavity and is isolated from the front end of the inner needle tube, and the cleaning reagent is used for being sprayed out through the first liquid injection hole to flush and clean the inner side wall of the container, and the use is simple and convenient to operate.

[0022] (3) The second liquid injection hole arranged on the arc-shaped part of the front end of the outer sleeve is adopted, and the included angle between the second liquid injection hole and the inner needle tube axis is an acute angle, so that the cleaning reagent sprayed out of the second liquid injection hole is inclined to be sprayed on the inner wall of the container, the adhesion of impurities is avoided, the cleaning is comprehensive and thorough, and the cleaning effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Structure diagram of the cleaning sleeve needle in the embodiment of the utility model;

[0024] Figure 2 Explosive structure diagram of the cleaning sleeve needle in the embodiment of the utility model;

[0025] Figure 3 Structure diagram of the plugging element in the cleaning sleeve needle in the embodiment of the utility model;

[0026] Figure 4 Internal structure diagram of the cleaning sleeve needle in the normal state (omitting the syringe) in the embodiment of the utility model;

[0027] Figure 5 Internal structure diagram of the cleaning sleeve needle in the suction state (omitting the syringe) in the embodiment of the utility model;

[0028] Figure 6 Internal structure diagram of the cleaning sleeve needle in the flushing state (omitting the syringe) in the embodiment of the utility model.

[0029] The figure mark: 1, inner needle tube;11, liquid guide port;12, upper ring seat;13, lower ring seat;131, insertion slot;2, outer sleeve tube;21, cleaning cavity;22, first liquid injection hole;23, arc part;24, second liquid injection hole;25, tail interface;3, center column;4, baffle;5, spring;6, syringe. DETAILED DESCRIPTION

[0030] In order to make the person skilled in the art better understand the utility model, now combining with specific implementation manner, the utility model is further explained.

[0031] Embodiment:

[0032] As Figure 1 , Figure 2 The utility model provides a kind of cleaning sleeve needle, including inner needle tube 1, the outer sleeve tube 2 of fixed sleeve set in the outer periphery of inner needle tube 1, and the syringe 6 connected with outer sleeve tube 2, inner needle tube 1 is through outer sleeve tube 2 front end and extends a distance outward, and outer sleeve tube 2 rear end is provided with the tail interface 25 compatible with syringe 6, specifically, in the embodiment, the tail interface 25 of outer sleeve tube 2 is connected with the interface thread sealing of syringe 6.

[0033] Optionally, in part embodiment, inner needle tube 1 and outer sleeve tube 2 are connected with integrated structure.

[0034] As Figure 4As shown, the outer sleeve 2 is provided with a cleaning cavity 21 formed by the inner wall of the outer sleeve 2 and the outer wall of the inner needle tube 1 at the front end of the outer sleeve 2, and a first liquid injection hole 22 in communication with the cleaning cavity 21, the first liquid injection hole 22 is provided with a plurality of holes uniformly distributed in the circumferential direction, and the first liquid injection hole 22 is perpendicular to the axis of the inner needle tube 1, so that the cleaning reagent sprayed through the first liquid injection hole 22 can vertically wash the inner wall of the container to be cleaned, ensuring that the cleaning is thorough and improving the cleaning effect.

[0035] Further, in combination with Figure 2 and Figure 4 As shown, the outer sleeve 2 is provided with an arc-shaped part 23 at the end position of the front end, the arc-shaped part 23 is provided with a plurality of second liquid injection holes 24 distributed at intervals, the second liquid injection hole 24 is in communication with the cleaning cavity 21, and the included angle between the second liquid injection hole 24 and the axis of the inner needle tube 1 is an acute angle, so that the cleaning reagent sprayed through the second liquid injection hole 24 can obliquely wash the inner wall of the container to be cleaned, avoiding that some impurities adhere to the inner wall of the container, thereby improving the cleaning effect.

[0036] In combination with Figure 3 , Figure 4 As shown, the inner needle tube 1 is provided with a liquid guide hole 11 in communication with the inner cavity and the cleaning cavity 21, and a sealing member movably arranged in the inner cavity of the inner needle tube 1. Specifically, the sealing member includes a center column 3 coaxially arranged with the inner needle tube 1, a blocking strip 4 fixedly arranged at the outer edge of the center column 3, and a spring 5 movably arranged around the outer periphery of the center column 3; the blocking strip 4 is arranged opposite to the liquid guide hole 11 to seal and block the liquid guide hole 11, the top end of the spring 5 is fixedly connected with the inner needle tube 1, and the bottom end is fixedly connected with the blocking strip 4, so that the compression or elongation of the spring 5 drives the center column 3 and the blocking strip 4 to reciprocate along the axis direction of the inner needle tube 1.

[0037] As shown in Figure 4 The inner wall of the inner needle tube 1 is provided with an upper ring seat 12 above the liquid guide hole 11 and a lower ring seat 13 below the liquid guide hole 11, the upper ring seat 12 and the lower ring seat 13 are fixedly connected with the inner needle tube 1, and are provided with a center through hole matched with the center column 3, so that the cleaning reagent can flow through the center through hole of the upper ring seat 12 and the lower ring seat 13; the top end of the spring 5 is fixedly connected with the upper ring seat 12, and the lower ring seat 13 is provided with a slot 131 matched with the blocking strip 4.

[0038] Further, the liquid guide hole 11, the blocking strip 4, and the slot 131 are provided with a plurality of holes uniformly distributed in the circumferential direction, and specifically in this embodiment, the liquid guide hole 11, the blocking strip 4, and the slot 131 are provided with four holes.

[0039] In the specific use process:

[0040] Under normal conditions, referring to Figure 4As shown, at this time, the spring 5 is in an undeformed state, the upper half of the blocking strip 4 is located at the liquid guide opening 11 to seal and shield the liquid guide opening 11, the lower half of the blocking strip 4 is inserted into the insertion slot 131 of the lower ring seat 13, and the center column 3 is matched with the center through hole of the lower ring seat 13 to form a seal.

[0041] In the suction state, referring to Figure 5 As shown, the suction and cleaning reagent is manually operated by the syringe 6 (not shown in the figure) to move the center column 3 and the blocking strip 4 upwards under the action of suction, the spring 5 is in a compressed state, the blocking strip 4 moves upwards by a distance, the lower half of the blocking strip 4 still seals and shields the liquid guide opening 11, the center column 3 is separated from the center through hole of the lower ring seat 13 to release the sealing state, and the cleaning reagent flows into the syringe 6 through the front end opening of the inner needle tube 1 and then flows upwards to the syringe 6 through the center through hole of the lower ring seat 13, the gap between the inner needle tube 1 and the inner wall of the center column 3 and the center through hole of the upper ring seat 12.

[0042] In the flushing state, referring to Figure 6 As shown, the cleaning reagent in the syringe 6 pushes the center column 3 and the blocking strip 4 downwards under the action of downward pressure to move the center column 3 and the blocking strip 4 downwards, the spring 5 is in a stretched state, the blocking strip 4 moves downwards by a distance to release the sealing and shielding of the liquid guide opening 11, the center column 3 is inserted into the center through hole of the lower ring seat 13, and the blocking strip 4 is combined with the insertion slot 131 to seal and shield the position area of the lower ring seat 13, so that the cleaning reagent flows into the cleaning cavity 21 through the liquid guide opening 11 and then sprays outwards to the inner wall of the container to be cleaned through the first liquid spraying hole 22 and the second liquid spraying hole 24.

[0043] It should be noted that in the suction state and the flushing state, the spring 5 is in a deformed state, and when the external force applied by the human body is removed, the spring 5 automatically restores to the initial state, so that the center column 3 and the blocking strip 4 return to the normal state.

[0044] In summary, the cleaning needle sleeve can be used for cleaning the sample container and the experimental container, has the advantages of simple structure, convenient use, can flush the inner wall of the container, has good cleaning effect and reduces the use and consumption of the cleaning reagent.

[0045] The preferred embodiments of the utility model are described above, and the patent range of the utility model is not limited by this, and any equivalent change and modification made within the range of the utility model should still belong to the range covered by the utility model.

Claims

1. A cleaning sheath, characterized by: The injection needle tube (1) and the outer sleeve tube (2) are coaxially arranged, the outer sleeve tube (2) is sleeved on the outer wall of the injection needle tube (1), and the injection needle tube (1) penetrates through the front end of the outer sleeve tube (2) and extends outward; The front end of the outer sleeve tube (2) is provided with a cleaning cavity (21) formed by the inner wall of the outer sleeve tube (2) and the outer wall of the injection needle tube (1), and a first liquid injection hole (22) in communication with the cleaning cavity (21); The injection needle tube (1) is provided with a liquid guide hole (11) in communication with the inner cavity of the injection needle tube (1) and the cleaning cavity (21), and a sealing member movably arranged in the inner cavity of the injection needle tube (1).

2. The cleaning sheath of claim 1, wherein: The sealing member includes a center column (3) coaxially arranged with the injection needle tube (1), a blocking strip (4) fixedly arranged on the outer edge of the center column (3), and a spring (5) movably sleeved on the outer periphery of the center column (3). The blocking strip (4) is arranged opposite to the liquid guide hole (11), the top end of the spring (5) is fixedly connected with the injection needle tube (1), and the bottom end of the spring (5) is fixedly connected with the blocking strip (4).

3. The cleaning sheath of claim 2, wherein: The inner wall of the injection needle tube (1) is provided with an upper ring seat (12) located above the liquid guide hole (11) and a lower ring seat (13) located below the liquid guide hole (11); The upper ring seat (12) is fixedly connected with the top end of the spring (5), and the lower ring seat (13) is provided with a slot (131) matched with the blocking strip (4).

4. The cleaning sheath of claim 2, wherein: The first liquid injection hole (22) is provided with a plurality of first liquid injection holes (22) uniformly and interval arranged along the circumferential direction. The liquid guide hole (11) and the blocking strip (4) are provided with a plurality of liquid guide holes (11) and blocking strips (4) uniformly and interval arranged along the circumferential direction.

5. The cleaning sheath of claim 1, wherein: The front end of the outer sleeve tube (2) is provided with an arc-shaped part (23), and the arc-shaped part (23) is provided with a plurality of second liquid injection holes (24) interval arranged; The second liquid injection hole (24) is in communication with the cleaning cavity (21), and the included angle between the second liquid injection hole (24) and the axis of the injection needle tube (1) is an acute angle.

6. The cleaning sheath of claim 1, wherein: The injection needle tube (1) and the outer sleeve tube (2) are connected in an integral structure.

7. The cleaning sheath of claim 1, wherein: Further comprising a syringe (6), and the rear end of the outer sleeve tube (2) is provided with a tail interface (25) matched with the syringe (6).

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