CN214974094U - Pipeline liquid injection support and in-vitro diagnostic instrument - Google Patents

Abstract

The utility model relates to a liquid support is annotated to pipeline. The pipeline liquid injection support comprises a support body and a guide rod; the support body is provided with a pipeline hole, and the outer diameter of the guide rod is smaller than the inner diameter of the pipeline and is movably connected with the support body; the guide rod can penetrate into the pipeline to guide the pipeline to penetrate through the pipeline hole, so that interference fit connection is formed between the pipeline and the support body. The utility model discloses a liquid support is annotated to pipeline not only can realize connecting the interference fit of pipeline, stabilizes the pipeline exit position, improves the precision of annotating the liquid direction, but also can guarantee to annotate the liquid quality for the pipeline of interference connection in provides radial support, guarantees the uniformity of pipeline internal diameter under the interference fit state.

Description

Pipeline liquid injection support and in-vitro diagnostic instrument

Technical Field

The utility model belongs to the technical field of the control by temperature change, concretely relates to liquid support and external diagnostic instrument are annotated to pipeline.

Background

In the IVD (In-Vitro Diagnostics) In Vitro Diagnostics industry, reagent and sample priming is generally required. However, different filling methods usually bring different filling qualities, such as the amount of bubbles generated after filling, the amount of liquid hanging on the reaction vessel after filling, the liquid column direction during filling, and the like, and finally directly affect the test result.

Currently, the following two protocols are mainly used for filling reagents and samples:

the first scheme is to connect the pipeline and the liquid injection part by using a joint, and finish the final liquid injection operation by using the liquid injection part. In the scheme, the liquid injection component such as a liquid injection needle is used, so that the control precision of the liquid injection direction can be improved, but the liquid injection path is inevitably changed due to the connection among the pipeline, the joint and the liquid injection component, so that the local pressure loss and the local turbulence are caused, and the liquid injection quality is influenced;

the second scheme is that the pipeline penetrates through the liquid injection support and extends for a certain distance, and the liquid injection operation is directly completed by the pipeline. This kind of scheme can guarantee the whole continuity of annotating the liquid route, effectively avoids the local pressure loss and the local torrent that the hookup location appears, nevertheless because pipeline commonly used chooses polytetrafluoroethylene material preparation usually for use, and the external diameter size also generally only about 2mm, can be little to 1.6mm even, the intensity of pipeline is limited like this, consequently can effectively pass in order to guarantee the pipeline and annotate the liquid support, will adopt clearance fit's mode to wear to establish. As shown in a combined drawing 1, firstly, a pipeline hole 111 with the inner diameter larger than the outer diameter of the pipeline 2 is formed in the liquid injection support 11, the pipeline 2 penetrates through the pipeline hole 111 in a clearance fit mode and extends out of the liquid injection support 11, then the residual clearance between the pipeline 2 and the liquid injection support 11 is filled by means of the plug piece 3, so that the pipeline 2 is extruded and fixed, the position of a pipeline outlet in the liquid injection process is stabilized, the liquid injection direction is accurately controlled, and the liquid injection quality is guaranteed.

However, in the practical operation process of the second scheme, the reserved diameter gap between the pipeline and the liquid injection support is generally only 0.05mm, so that the plugging operation of the plug piece is difficult, the plugging effect is difficult to guarantee, and the liquid injection effect is influenced by the local reducing condition caused by the single-side extrusion of the plug piece on the pipeline.

In addition, in order to avoid the problem that the liquid injection quality is influenced by the contact between the liquid injection support and the liquid level after liquid injection, the pipeline generally needs to stretch out of the liquid injection support by 3-5 mm, and the pipeline has the diameter of only 1.6mm, so that the pipeline is easy to shake in the liquid injection process, the stability of the liquid injection direction is influenced, and the liquid injection quality is also reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a pipeline liquid injection scheme capable of improving the liquid injection quality for solving the problem of low liquid injection quality in the prior pipeline liquid injection.

The utility model provides a pipeline liquid injection support, which comprises a support body and a guide rod; the support body is provided with a pipeline hole, and the outer diameter of the guide rod is smaller than the inner diameter of the pipeline and is movably connected with the support body; the guide rod can penetrate into the pipeline and guide the pipeline to penetrate through the pipeline hole, so that the pipeline is connected with the support body in an interference fit manner.

In one embodiment, the inner diameter of the pipe hole is smaller than the outer diameter of the pipe, and the outer surface of the pipe is in interference fit contact with the inner surface of the pipe hole.

In one embodiment, the pipeline liquid injection support is also provided with an extension support; the extension support is positioned at the outlet position of the pipeline hole in the support body, and the extension support is connected with a pipeline extending out of the pipeline hole in an interference fit mode.

In one embodiment, the inner diameter of the conduit aperture is greater than the outer diameter of the conduit.

In one embodiment, the extension support is composed of a plurality of support claws, and the plurality of support claws are uniformly distributed in the circumferential direction of the pipeline hole.

In one embodiment, the supporting claw is elastically arranged and can form elastic clamping along the radial direction of the pipeline hole.

In one embodiment, the extension support and the support body are detachably connected.

In one embodiment, the extension support is provided with an external thread, the support body is provided with a corresponding threaded hole, and the extension support is in threaded connection with the support body.

In one embodiment, a split structure is adopted between the guide rod and the support body.

In one embodiment, the guide rod adopts a T-shaped structure and consists of a fixed end and a guide end which are perpendicular to each other; the fixed end is connected with the outlet of the pipeline hole in the support body, and the guide end extends to the pipeline hole along the axis direction of the pipeline hole.

An in vitro diagnostic instrument is provided with the pipeline liquid injection support and the pipeline; the pipeline and the pipeline liquid injection support are connected in an interference fit mode.

The utility model discloses an among the liquid support is annotated to the pipeline, through set up the pipeline hole that aperture size is less than pipeline external diameter size on the support body, make the pipeline pass and form interference fit with the support body after the pipeline hole and be connected to it is fixed to the pipeline to reach the liquid support is annotated to the pipeline, stabilizes the pipeline exit position, improves the precision of annotating the liquid direction. Meanwhile, through setting up a guide bar that external diameter is less than pipeline internal diameter size, utilize the guide bar to provide the inside support to the pipeline that passes the pipeline hole, form along the even radial compression of circumferencial direction when making the pipeline pass the pipeline hole, not only can improve pipeline strength, the pipeline of being convenient for passes the pipeline hole with interference fit's mode, but also can provide radial support for the pipeline, guarantee the unanimous continuity of pipeline internal diameter under the interference fit state, guarantee to annotate the liquid quality.

Drawings

FIG. 1 is a schematic cross-sectional view of a liquid injection support of a pipeline in a prior art structure in a state of being connected with the pipeline;

FIG. 2 is a schematic cross-sectional view illustrating a liquid injection support of a pipeline connected to the pipeline according to an embodiment of the present invention;

FIG. 3 is a schematic view of an outline structure of a holder body according to a first embodiment;

FIG. 4 is a schematic sectional view illustrating a liquid injection support of the second embodiment when connected to a pipeline;

FIG. 5 is a schematic diagram showing an outline structure of the liquid injection support in the second embodiment;

FIG. 6 is a schematic sectional view illustrating a liquid injection support of the third embodiment when connected to a pipeline;

fig. 7 is a schematic structural diagram of the outer shape of the holder body in the third embodiment.

Wherein:

11-a liquid injection support of conventional structure; 111-a pipeline hole on the liquid injection support of the conventional structure; 2-pipeline;

3-a plug sheet; 1 a-the pipeline injection support of the first embodiment; 11 a-the holder body of the first embodiment;

12 a-the guide bar of the first embodiment; 111 a-a tube hole in the tube injection support in the first embodiment;

1 b-the line injection support of embodiment two; 11 b-the carrier body of embodiment two;

12 b-guide bar of example two; 13 b-a screw; 14 b-a gasket;

111 b-a tube hole in the tube injection support in the second embodiment; 121 b-fixed end; 122 b-a guide end;

1 c-the liquid injection support of the third embodiment; 11 c-the holder body of the third embodiment;

12 c-guide bar of example three; 13 c-extension support;

111 c-line hole in the line injection support in the third embodiment.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 2 and 3, the first embodiment of the liquid injection support 1a includes a support body 11a and a guide rod 12 a. Wherein, a pipeline hole 111a is arranged on the support body 11a, and the inner diameter of the pipeline hole 111a is smaller than the outer diameter of the pipeline 2. The guide rod 12a exists in a form of being independent from the holder body 11a, and the outer diameter dimension of the guide rod 12a is smaller than the inner diameter dimension of the pipe 2.

At this moment, when the external diagnostic apparatus adopting the liquid injection support of the pipeline of the embodiment performs the injection operation of the reagent or the sample in the liquid injection mode of the pipeline, firstly the guide rod penetrates into the interior of the pipeline from the outlet of the pipeline, then the guide rod and the pipeline are kept in a relatively static state in the axial direction and simultaneously penetrate into the pipeline hole, when the pipeline penetrates out of the pipeline hole and reaches a specific extending length, the guide rod is drawn out from the pipeline, so that the interference fit connection between the pipeline and the liquid injection support is completed, and then the accurate injection operation of the reagent or the sample can be performed in the liquid injection mode of the pipeline.

In this in-process, the guide bar can provide the intensity for the pipeline and support, and because the internal diameter size in pipeline hole is less than the external diameter size of pipeline, the external diameter size of guide bar is less than the internal diameter size of pipeline, make the pipeline under the radial support combined action of the radial extrusion in pipeline hole and guide bar, can form the radial even shrink along the circumferencial direction, finally form under interference fit's the condition between support body and pipeline, can guarantee the continuous uniformity of pipeline internal diameter, improve the accurate control to annotating the liquid direction, guarantee to annotate the liquid quality.

Referring to fig. 4 and 5, the second embodiment of the liquid injection support 1b is composed of a support body 11b and a guide rod 12b, and the main difference from the first embodiment of the liquid injection support 1a is that the guide rod 12b is a T-shaped structure and is composed of a fixed end 121b and a guide end 122b perpendicular to each other, wherein the fixed end 121b crosses over the pipeline hole 111b and then forms a detachable movable connection with the support body 11b through a screw 13b, and the guide end 122b extends into the pipeline hole 111b along the axial direction of the pipeline hole 111 b.

At the moment, before the pipeline is connected with the pipeline injection support, the guide rod with the corresponding size is selected according to the inner diameter size of the pipeline, the connection between the guide rod and the support body is completed through the screw, then the pipeline penetrates into the pipeline hole along the guide end of the guide rod until the pipeline penetrates through the pipeline hole, then the guide rod and the support body are detached and are drawn out from the pipeline, and therefore the interference fit connection between the pipeline and the support body is completed.

Referring to fig. 4 and 5, in the present embodiment, since the fixed end 121b is fixed across the pipe hole, the pipe 2 extending out of the pipe hole 111b can be position-limited by the fixed end 121b, so as to control the size of the pipe 2 extending out of the seat body 11b, that is, by providing spacers 14b with different thicknesses between the fixed end 121b and the seat body 11b, the distance between the fixed end 121b and the lower end surface of the seat body can be changed, so as to control the extending length of the pipe 2.

In addition, the preparation material to support body and guide bar is different, can adopt different swing joint modes between guide bar and the support body. When the support body and the guide rod are made of nonmagnetic materials, for example, polyether-ether-ketone materials are selected, the support body and the guide rod can be detachably movably connected by adopting a screw connection mode in the embodiment; when support body and guide bar all adopt magnetic material, just can adopt the mode of electromagnetic adsorption to carry out quick assembly disassembly to connect between the two to improve the convenience of dismouting operation.

Referring to fig. 6 and 7, the third embodiment of the liquid injection support 1c includes a support body 11c, a guide rod 12c, and an extension support 13 c. The inner diameter of the pipeline hole 111c formed in the support body 11c is larger than the outer diameter of the pipeline 2, the extension support 13c adopts a three-grab structure, three supports are uniformly distributed around the circumference of the pipeline hole 111c, and the inner diameter formed by the three supports is smaller than the outer diameter of the pipeline 2.

At this moment, when carrying out the pipeline and annotating interference fit between the liquid support and being connected, form interference fit by the tip that extends support and pipeline and be connected to reach the effect of accurate fixed pipeline exit position, both can guarantee the accurate control to pipeline exit position like this, but also can reduce the interference contact area between pipeline and the support body, thereby improve the pipeline and annotate the convenience of being connected the operation between the liquid support.

In addition, in this embodiment, through set up the extension support at the tip of support body to carry out the short distance by the extension support that cross sectional dimension is littleer and fix the pipeline, just can suitably increase the support body and annotate the distance between the liquid level after the liquid, thereby avoid support body and annotate the possible contact of liquid level after the liquid, even if under this situation, even extend support and annotate liquid level after the liquid and take place the contact, nevertheless because the cross sectional dimension that extends the support is littleer, thereby can reach the effect that reduces the influence to annotating the liquid quality.

In this embodiment, adopt elasticity setting between three support grabs and the support body, make three support grabs can form the elasticity centre gripping along the radial in pipeline hole. Like this, pass the in-process that extends the support at the pipeline and can grab the radial outer effort that expands of formation to three support to reduce to extend the extrusion force that supports the pipeline, wear to establish the elasticity restoring force that targets in place after the pipeline again by extending and support and carry out the centre gripping to the pipeline fixed, improve the convenience of wearing to establish the operation to the pipeline and the protection to the pipeline. Wherein, support and grab and can directly adopt high elasticity panel preparation to possess the effect of the radial elasticity centre gripping that forms along the pipeline hole, equally also can support with the help of having elastic connecting rod and grab and be connected between the support body, thereby utilize the connecting rod to drive to support and grab and form radial centre gripping effect to the pipeline.

In addition, in other embodiments, according to the requirement of design and use, extend to support and can also adopt other structural style, for example cylinder or four-jaw structure, and extend to support and can also adopt detachable connection between the support body, for example through set up the external screw thread on extending to support, set up corresponding screw hole on the support body, thereby make extend to support and form threaded connection between the support body, to the pipeline of different external diameter size, just so, can the corresponding size of quick replacement extend to support and carry out interference fit connection effectively to the pipeline, thereby satisfy the cooperation of annotating liquid support and different external diameter size pipelines and use, improve the result of use of whole pipeline support.

The technical features in the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A pipeline liquid injection support is characterized by comprising a support body and a guide rod; the support body is provided with a pipeline hole, and the outer diameter of the guide rod is smaller than the inner diameter of the pipeline and is movably connected with the support body; the guide rod can penetrate into the pipeline to guide the pipeline to penetrate through the pipeline hole, so that the pipeline is connected with the support body in an interference fit mode.

2. The conduit injection support according to claim 1, wherein the inner diameter of the conduit bore is smaller than the outer diameter of the conduit, and the outer surface of the conduit is in interference fit contact with the inner surface of the conduit bore.

3. The pipeline liquid injection support according to claim 1, wherein the pipeline liquid injection support is further provided with an extension support; the extension support is positioned at the outlet position of the pipeline hole in the support body, and the extension support is connected with a pipeline extending out of the pipeline hole in an interference fit mode.

4. The conduit injection support of claim 3, wherein the conduit aperture has an inner diameter dimension that is greater than an outer diameter dimension of the conduit.

5. The pipeline injection support of claim 3, wherein the extension support is composed of a plurality of support claws, and the plurality of support claws are uniformly distributed along the circumferential direction of the pipeline hole.

6. The pipeline liquid injection support according to claim 5, wherein the support claw is elastically arranged and can elastically clamp along the radial direction of the pipeline hole.

7. The line injection support according to claim 3, wherein the extension support is detachably connected to the support body.

8. The pipeline liquid injection support according to any one of claims 1 to 7, wherein a split structure is adopted between the guide rod and the support body.

9. The pipeline liquid injection support according to claim 8, wherein the guide rod is of a T-shaped structure and comprises a fixed end and a guide end which are perpendicular to each other; the fixed end is connected with the outlet of the pipeline hole in the support body, and the guide end extends to the pipeline hole along the axis direction of the pipeline hole.

10. An in vitro diagnostic apparatus, characterized in that the in vitro diagnostic apparatus is provided with the pipeline liquid injection support and the pipeline of any one of claims 1 to 9; the pipeline and the pipeline liquid injection support are connected in an interference fit mode.

Images