Test tube carrier and test tube transfer device

Abstract

The utility model discloses a test tube carrier and a test tube transfer device, and relates to the technical field of test tube carriers, the test tube carrier comprises a fixing frame and a limiting piece, an accommodating cavity is formed in the fixing frame, the top side of the fixing frame is provided with a test tube passing opening communicated with the accommodating cavity, and the test tube passing opening can allow a test tube to enter and exit from the accommodating cavity; the limiting piece is arranged at the test tube passing opening and is arranged in a surrounding manner in the circumferential direction of the test tube passing opening; at least part of the limiting piece is arranged in a deformable mode in the radial direction of the test tube passing opening and used for being matched with a test tube in a limiting mode. According to the technical scheme, the test tube carrying frame suitable for being matched with the test tube transfer device can be provided, so that the universality of the test tube carrying frame is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test tube carrier technical field, especially a test tube carrier and test tube transfer device. BACKGROUND

[0002] In the related art, the test tube carrier is usually used for placing sample test tubes when medical staff collects samples, and can also be used as a carrier for transferring sample test tubes when the device is used to detect the sample test tubes. However, the existing test tube carrier structure can only be used for placing test tubes with a fixed diameter size, and the universality is poor.

[0003] Therefore, it is necessary to provide a new test tube carrier to solve or at least alleviate the above technical defects. SUMMARY

[0004] The utility model discloses a test tube carrier, which is suitable for test tubes with different diameters and sizes, and improves the universality of the test tube carrier.

[0005] To achieve the above-mentioned purpose, the test tube carrier provided by the utility model comprises:

[0006] A fixing frame is formed with a receiving cavity, and a test tube pass-through opening is formed on the top side of the fixing frame and communicates with the receiving cavity, so that the test tube can enter or exit the receiving cavity.

[0007] A limiting piece is arranged in the test tube pass-through opening and is arranged around the circumference of the test tube pass-through opening.

[0008] At least part of the limiting piece is arranged to be deformable along the radial direction of the test tube pass-through opening, so as to limit the test tubes with different diameters.

[0009] In an embodiment, the limiting piece comprises:

[0010] A fixing part is arranged in the test tube pass-through opening and is arranged around the circumference of the test tube pass-through opening.

[0011] A plurality of elastic parts are connected to the inner edge of the fixing part at one end and extend towards the center of the test tube pass-through opening and are inclined to the insertion direction of the test tube pass-through opening at the other end. The plurality of elastic parts are arranged in sequence and at intervals along the circumference of the fixing part.

[0012] In an embodiment, the limiting piece further comprises a plurality of clamping parts, one end of the clamping part is arranged at the outer edge of the fixing part, the other end is provided with a clamping protrusion, the side of the clamping protrusion away from the fixing part is provided with a chamfer, and the clamping protrusion is used for clamping and cooperating with the fixing frame.

[0013] In an embodiment, the test tube pass-through includes a guide section and a limiting section which are sequentially communicated in the insertion direction of the test tube pass-through, and the inner diameter of the guide section is arranged in a tapered manner in the insertion direction of the test tube pass-through.

[0014] In an embodiment, the fixing frame includes:

[0015] a first fixing member for supporting the test tube; and

[0016] a second fixing member which is arranged on the top side of the first fixing member and forms a receiving cavity together with the first fixing member, and the test tube pass-through is arranged through the second fixing member;

[0017] at least part of the periphery of the second fixing member is arranged spaced apart from the first fixing member, so as to form an avoiding opening together with the first fixing member, and the avoiding opening is limited in position by an external transfer mechanism.

[0018] In an embodiment, the first limiting column is arranged on the side of the first fixing member facing the second fixing member.

[0019] the second limiting column is arranged on the side of the second fixing member facing the first fixing member, and the second limiting column and the first limiting column are arranged opposite to each other and are limited in position by the first limiting column.

[0020] In an embodiment, the first limiting column is arranged on the side of the first fixing member facing the second fixing member.

[0021] and / or, the second fixing member is arranged with a fastening hole on the side thereof away from the first fixing member, the fastening hole penetrates to the end of the second limiting column facing the first fixing member, and the fixing frame further includes a fastener which is arranged through the fastening hole and is detachably connected with the second limiting column.

[0022] In an embodiment, the first fixing member is arranged with a positioning hole on the side thereof facing the second fixing member, and the positioning hole and the test tube pass-through are arranged opposite to each other and are limited in position by the test tube.

[0023] In an embodiment, the positioning hole includes a first section, a second section and a third section which are sequentially communicated in the direction away from the second fixing member.

[0024] the inner diameter of the third section is smaller than that of the first section, and the second section is transitionally connected between the first section and the third section and is used for abutting against the test tube.

[0025] The utility model further provides a test tube transfer device, including preceding any one described test tube carrier, the test tube carrier includes:

[0026] A fixing frame, wherein a receiving cavity is formed within the fixing frame, and a test tube outlet communicating with the receiving cavity is provided on the top side of the fixing frame; and

[0027] A limiting member is provided at the test tube opening and is arranged around the circumference of the test tube opening;

[0028] At least a portion of the limiting member is deformably deformable along the radial direction of the test tube opening to accommodate test tubes of different diameters.

[0029] The technical solution of this utility model forms a receiving cavity within a fixed frame and provides a test tube passage on the top side of the fixed frame that connects to the receiving cavity. This allows test tubes to be placed on the fixed frame through the test tube passage, thereby achieving the test tube carrier's function of supporting the test tubes. Furthermore, since a limiting member is provided within the test tube passage and is arranged circumferentially around it, and at least a portion of the limiting member is deformable along the radial direction of the test tube passage, the degree of deformation of the limiting member can be changed to adapt it to test tubes of different diameters, thereby improving the versatility of the test tube carrier. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A schematic diagram of a test tube carrier according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 Cross-sectional view of the test tube carrier;

[0033] Figure 3 for Figure 1 A cross-sectional view of the test tube carrier from another perspective;

[0034] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 for Figure 1 A schematic diagram of the first fixing component of the pilot tube carrier;

[0036] Figure 6 for Figure 1 A schematic diagram of the second fixing component of the pilot tube carrier;

[0037] Figure 7 To Figure 1 Structure diagram of the limiting piece of the pilot tube carrier.

[0038] Brief description of the drawings:

[0039] 100, test tube carrier; 10, fixed frame; 10a, avoiding port; 11, first fixing piece; 111, first limiting column; 111a, limiting groove; 112, positioning hole; 112a, first section body; 112b, second section body; 112c, third section body; 12, second fixing piece; 121, test tube passing port; 121a, guiding section; 121b, limiting section; 122, second limiting column; 122a, fastening hole; 20, limiting piece; 21, fixed part; 22, elastic part; 23, clamping part; 231, clamping convex; 231a, chamfer; 200, test tube.

[0040] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0044] In the related art, the test tube carrier is usually used for placing the sample test tube when the medical staff collects the sample, and can also be used for transferring the carrier of the sample test tube when the device is used to detect the sample test tube. However, the existing test tube carrier structure can only be used for placing test tubes with a fixed diameter size, and the universality is poor.

[0045] Therefore, based on the above considerations, in order to solve the problem that the current test tube carrier 100 structure is difficult to cooperate with the limiting of the test tube 200 transfer device, the utility model provides a novel test tube carrier 100. The test tube carrier 100 forms a containing cavity in the fixed frame 10, and a test tube pass-through opening 121 communicating with the containing cavity is arranged on the top side of the fixed frame 10, so that the test tube 200 can be placed on the fixed frame 10 through the test tube pass-through opening 121, thereby realizing the carrying function of the test tube carrier 100 to the test tube 200. Further, since the limiting piece 20 is arranged along the circumferential direction of the test tube pass-through opening 121, and at least part of the limiting piece 20 is arranged to be deformable along the radial direction of the test tube pass-through opening 121, the deformation degree of the limiting piece 20 can be changed to adapt to test tubes 200 with different diameters, thereby improving the universality of the test tube carrier 100.

[0046] Please refer to Figures 1 to 3 In an embodiment of the utility model, the test tube carrier 100 includes a fixed frame 10 and a limiting piece 20, the fixed frame 10 forms a containing cavity, the top side of the fixed frame 10 is provided with a test tube pass-through opening 121 communicating with the containing cavity, and the test tube pass-through opening 121 is used for the test tube 200 to enter and exit the containing cavity. The limiting piece 20 is arranged in the test tube pass-through opening 121 and is arranged along the circumferential direction of the test tube pass-through opening 121. At least part of the limiting piece 20 is arranged to be deformable along the radial direction of the test tube pass-through opening 121 to limit the cooperation with test tubes 200 with different diameters.

[0047] Specifically, the shape of the test tube pass-through opening 121 can be adapted to the contour of the test tube 200, and at least part of the cavity wall of the containing cavity can also abut against the test tube 200 to ensure the limiting effect of the fixed frame 10 on the test tube 200. The test tube pass-through opening 121 can be arranged vertically upward, or can be arranged inclinedly relative to the vertical direction, which is not limited here.

[0048] In some embodiments, the top side of the fixed frame 10 is provided with a plurality of test tube pass-through openings 121, and the plurality of test tube pass-through openings 121 are arranged in an array. The fixed frame 10 can form only one containing cavity, and the plurality of test tube pass-through openings 121 are respectively communicated with the containing cavity. Of course, the fixed frame 10 can also form a plurality of containing cavities, and the plurality of containing cavities are isolated from each other and arranged in an array. Each test tube pass-through opening 121 is arranged corresponding to one containing cavity, which is not limited here. By arranging a plurality of test tube pass-through openings 121, the capacity of the test tube carrier 100 for the test tubes 200 can be improved.

[0049] In some embodiments, the fixing frame 10 can be assembled by different structural members, for example, the fixing frame 10 can be formed by stacking and connecting the first fixing member 11 and the second fixing member 12, so that the fixing frame 10 can be divided into different parts for processing respectively, thereby facilitating the processing convenience of the fixing frame 10. Alternatively, the fixing frame 10 can also be integrally formed, so as to facilitate the structural strength of the fixing frame 10. The specific implementation can be set as required, which is not limited herein.

[0050] Please refer to Figure 4 and Figure 7 In the embodiment of the utility model, the test tube carrier 100 further includes a limiting piece 20, the limiting piece 20 includes a fixed part 21 and a plurality of elastic parts 22, the fixed part 21 is arranged on the test tube port 121 and is arranged along the circumference of the test tube port 121, one end of the elastic part 22 is connected to the inner edge of the fixed part 21, and the other end is arranged in an inclined manner towards the center of the test tube port 121 and in the insertion direction of the test tube port 121, and the plurality of elastic parts 22 are arranged in sequence and at intervals along the circumference of the fixed part 21.

[0051] Since the elastic parts 22 of the limiting piece 20 are arranged in an inclined manner from the inner edge of the fixed part 21 towards the central axis of the test tube port 121, when the test tube 200 is arranged in the test tube port 121, the elastic parts 22 can be deformed in the radial direction of the test tube port 121 under the pushing action of the test tube 200 and can be in close abutment with the outer wall of the test tube 200. The plurality of elastic parts 22 are arranged in sequence and at intervals along the circumference of the test tube port 121 to be uniformly distributed on the lateral side of the test tube 200, so that the test tube 200 arranged in the test tube port 121 can be stably limited, thereby facilitating the stability of the test tube 200. Compared with limiting the test tube 200 by a hole structure with a fixed inner diameter, limiting the test tube 200 by the elastic parts 22 can make the test tube carrier 100 compatible with test tubes 200 with different outer diameters, thereby facilitating the versatility and practicality of the test tube carrier 100.

[0052] Further, by arranging the fixed part 21 of the limiting piece 20 along the circumference of the test tube port 121 and connecting it with the plurality of elastic parts 22, the limiting piece 20 can be assembled as a whole to the test tube port 121 of the second fixing member 12, thereby facilitating the assembly convenience of the limiting piece 20.

[0053] Please refer to Figure 4 and Figure 7 In the embodiment of the utility model, the limiting piece 20 further includes a plurality of clamping parts 23, one end of the clamping part 23 is arranged at the outer edge of the fixed part 21, and the other end is provided with a clamping convex 231, the side, away from the fixed part 21, of the clamping convex 231 is provided with a chamfer 231a, and the clamping convex 231 is used for clamping and cooperating with the second fixing member 12.

[0054] Specifically, the clamping portion 23 protrudes from one end of the fixing portion 21 away from the test tube mouth 121 towards the first fixing member 11, and is provided with a clamping protrusion 231 in a direction away from the central axis of the test tube mouth 121. In some embodiments, the second fixing member 12 can also be provided with a clamping groove on the side facing the first fixing member 11, and the clamping groove is arranged on the circumferential side of the test tube mouth 121, so as to be clamped and matched with the clamping protrusion 231 of the limiting member 20 through the clamping groove. Thus, the clamping protrusion 231 can be limited by the second fixing member 12, so as to stop the limiting member 20 from being separated from the test tube mouth 121, thereby ensuring the structural stability of the test tube rack 100.

[0055] Further, the clamping protrusion 231 is provided with a chamfer 231a to form a guide slope on the side away from the central axis of the test tube mouth 121. In this way, the assembly convenience of the limiting member 20 to the test tube mouth 121 can be improved.

[0056] Please refer to Figure 4 In the embodiments of the present application, the test tube mouth 121 includes a guide section 121a and a limiting section 121b which are sequentially communicated in the insertion direction of the test tube mouth 121, and the fixing portion 21 is limited to the limiting section 121b. The guide section 121a is located at one end of the limiting section 121b away from the first fixing member 11, and the inner diameter of the guide section 121a is gradually expanded in the insertion direction of the test tube mouth 121. The inner wall of the guide section 121a can be inclined or curved, thereby achieving a guiding effect and improving the assembly convenience of the limiting member 20.

[0057] Please refer to Figure 1 and Figure 2 In the embodiments of the present application, the fixing frame 10 includes the first fixing member 11 and the second fixing member 12. The first fixing member 11 is used for supporting the test tube 200. The second fixing member 12 is arranged on the top side of the first fixing member 11 and forms a containing cavity together with the first fixing member 11. The second fixing member 12 is provided with the test tube mouth 121. At least part of the circumferential edge of the second fixing member 12 is arranged to be spaced apart from the first fixing member 11, so as to form an avoidance opening 10a together with the first fixing member 11. Let-in 10a, So as to be limited and matched with the external transfer mechanism through the avoidance opening 10a.

[0058] The first fixing member 11 and the second fixing member 12 can be only arranged at the peripheral positions of the two, so as to form the avoiding opening 10a of the fixing frame 10 through the gap between the peripheries of the two, so that the external transfer mechanism can be limitedly matched with the fixing frame 10 through the gap of the first fixing member 11 and the second fixing member 12. Specifically, in the embodiment, the second fixing member 12 can include a top plate and a surrounding edge, the top plate is arranged at the top side of the first fixing member 11 in a spaced manner, the surrounding edge is arranged along the periphery of the top plate, and the bottom end of the surrounding edge is in a gap with the top side of the first fixing member 11, so that the avoiding opening 10a for the external transfer mechanism to enter and exit can be formed to be limitedly matched with the external transfer mechanism.

[0059] In an embodiment, the avoiding opening 10a can be arranged at the outer periphery of the fixing frame 10 and arranged along the periphery of the fixing frame 10, so that the external transfer mechanism can be limitedly matched with the test tube carrier 100 at any position along the periphery of the fixing frame 10; of course, the avoiding opening 10a can also be arranged only at the local position of the peripheral edge of the fixing frame 10, so that the external transfer mechanism can be limitedly matched with the test tube carrier 100 only at the preset position. In this way, the test tube 200 can be prevented from being lifted together with the test tube carrier 100 when being grabbed by the grabbing mechanism, and the position stability of the test tube carrier 100 is improved.

[0060] Please refer to Figure 2 In the embodiment of the utility model, the side of the first fixing member 11 facing the second fixing member 12 is provided with a first limiting column 111; the side of the second fixing member 12 facing the first fixing member 11 is provided with a second limiting column 122, the second limiting column 122 and the first limiting column 111 are oppositely arranged and limitedly matched with the first limiting column 111.

[0061] The first limiting column 111 is arranged on the top side of the first fixing member 11, and the second limiting column 122 is arranged on the side of the top plate of the second fixing member 12 facing the first fixing member 11, and is used for limitedly matching with the first limiting column 111. In this way, the second fixing member 12 can be arranged above the first fixing member 11 through the limited matching between the first limiting column 111 and the second limiting column 122.

[0062] In some embodiments, the first fixing member 11 is provided with a plurality of first limiting columns 111, the second fixing member 12 is provided with a plurality of second limiting columns 122, and the plurality of second limiting columns 122 are arranged in a staggered manner with the test tube passing openings 121 on the second fixing member 12, and each second limiting column 122 corresponds to a first limiting column 111. In this way, the one-to-one matching between the plurality of first limiting columns 111 and the plurality of second limiting columns 122 can realize the positioning matching between the first fixing member 11 and the second fixing member 12, and the structural stability of the fixing frame 10 is improved.

[0063] Please refer to Figure 2 andFigure 5 In the embodiment of the utility model, one end of the first limiting column 111 towards the second limiting column 122 is provided with a limiting groove 111a, and at least part of the second limiting column 122 is limited in the limiting groove 111a.

[0064] Specifically, the shape of the limiting groove 111a can be matched with the contour of the second limiting column 122, and the second limiting column 122 can be partially accommodated in the limiting groove 111a or completely accommodated in the limiting groove 111a. In this way, the first limiting column 111 can be precisely limited to the second limiting column 122 through the plug-in cooperation of the limiting groove 111a and the second limiting column 122, which is beneficial to reduce the risk of the second fixing part 12 deviating relative to the first fixing part 11, and further improves the structural stability of the fixing frame 10.

[0065] Please refer to Figure 2 and Figure 6 In the embodiment of the utility model, the side of the second fixing part 12 away from the first fixing part 11 is provided with a fastening hole 122a, the fastening hole 122a penetrates to one end of the second limiting column 122 towards the first fixing part 11, and the fixing frame 10 further comprises a fastener, the fastener is provided in the fastening hole 122a and detachably connected with the first limiting column 111.

[0066] The fastener can be but not limited to a threaded structure such as a stud, a screw, etc., the first limiting column 111 is provided with a threaded hole, the fastener can be provided in the threaded hole in the second fixing part 12 and threadedly connected with the first limiting column 111, so that the second fixing part 12 can be locked on the first fixing part 11 through the fastener. Of course, the fastener can also be detachably connected with the first limiting column 111 through clamping cooperation or other ways, which is not limited here.

[0067] Please refer to Figure 4 and Figure 5 In the embodiment of the utility model, the side of the first fixing part 11 towards the second fixing part 12 is provided with a positioning hole 112, the positioning hole 112 and the test tube mouth 121 are oppositely arranged and used for limiting cooperation with the test tube 200. In this way, the test tube 200 inserted into the test tube mouth 121 can move along the axial direction to the positioning hole 112, so that the bottom of the test tube 200 is limited in the positioning hole 112.

[0068] In addition, the positioning hole 112 and the test tube mouth 200 can each be provided with a plurality of holes, and each positioning hole 112 and each test tube mouth 200 are oppositely arranged in the vertical direction, so that the test tube 200 can be vertically placed through the limiting action of the test tube mouth 121 and the positioning hole 112.

[0069] Specifically, in the embodiment of the utility model, the positioning hole 112 includes the first section body 112a, the second section body 112b and the third section body 112c that are communicated in turn in the direction away from the second fixing part 12, the inner diameter of the third section body 112c is less than the first section body 112a, the second section body 112b is connected between the first section body 112a and the third section body 112c for abutting the test tube 200.

[0070] Since the second section body 112b is connected between the first section body 112a and the second section body 112b, the inner wall of the second section body 112b is inclined. Specifically, in the embodiment, the inner wall of the second section body 112b can be inclined, thereby achieving the guiding effect on the bottom of the test tube 200 to ensure the stability of the test tube 200. Moreover, by making the second section body 112b inclined, it can also be compatible with test tubes 200 of different outer diameters to ensure the versatility and practicality of the test tube carrier 100.

[0071] Further, in some embodiments, the inner diameter of the first section body 112a can be gradually expanded in the direction from the first fixing part 11 to the second fixing part 12, so that the inner wall of the first section body 112a can also have a certain guiding effect. The slope of the inner wall of the first section body 112a can be less than the slope of the inner wall of the second section body 112b.

[0072] The utility model also proposes a test tube transfer device, the test tube transfer device includes shift and load mechanism and test tube carrier 100, the specific structure of test tube carrier 100 refers to the above embodiment, because the test tube carrier 100 adopts all the technical solutions of the above-mentioned embodiments, so it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the test tube 200 transfer device proposed by the utility model can be applied in nucleic acid detection flow line and other detection equipment, but is not limited to, the test tube 200 transfer loading can be driven by the transmission table test tube carrier 100, but also can further set up the hand mechanism to be used for grabbing test tube 200, which is not limited here.

[0073] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings under the technical concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A test tube carrier, characterized in that, include: A fixing frame, wherein a receiving cavity is formed within the fixing frame, and a test tube passage is provided on the top side of the fixing frame, communicating with the receiving cavity, the test tube passage allowing test tubes to enter and exit the receiving cavity; and A limiting member is provided at the test tube opening and is arranged around the circumference of the test tube opening; Wherein, at least a portion of the limiting member is deformably arranged radially along the opening of the test tube to limit and cooperate with test tubes of different diameters; The limiting component includes: A fixing part is provided at the test tube opening and is arranged around the circumference of the test tube opening; Several elastic portions, one end of which is connected to the inner edge of the fixing portion, and the other end extending obliquely toward the center of the test tube opening and toward the insertion direction of the test tube opening, wherein the elastic portions are arranged at intervals along the circumference of the fixing portion; and Several snap-fit ​​parts are provided, one end of which is located on the outer edge of the fixing part, and the other end is provided with a snap-fit ​​protrusion. The snap-fit ​​protrusion has a chamfer on the side facing away from the fixing part, and the snap-fit ​​protrusion is used to snap-fit ​​with the fixing frame.

2. The test tube carrier as described in claim 1, characterized in that, The test tube inlet includes a guide section and a limiting section that are connected sequentially along the insertion direction of the test tube inlet, and the inner diameter of the guide section is gradually reduced in the insertion direction of the test tube inlet.

3. The test tube carrier as described in any one of claims 1 to 2, characterized in that, The fixing frame includes: The first fixing element is used to support the test tube; and The second fixing member is located on the top side of the first fixing member and together with the first fixing member forms an accommodating cavity. The second fixing member is provided with the test tube outlet. At least a portion of the periphery of the second fastener is spaced apart from the first fastener to form a clearance opening with the first fastener, so as to limit the engagement with the external transfer mechanism through the clearance opening.

4. The test tube carrier as described in claim 3, characterized in that, The first fixing member has a first limiting post on the side facing the second fixing member; The second fixing member has a second limiting post on the side facing the first fixing member. The second limiting post and the first limiting post are arranged opposite to each other and cooperate with the first limiting post for limiting.

5. The test tube carrier as described in claim 4, characterized in that, The first limiting post has a limiting groove at one end facing the second limiting post, and at least a portion of the second limiting post is limited within the limiting groove; And / or, the second fixing member has a fastening hole on the side opposite to the first fixing member, the fastening hole extending to the end of the second limiting post facing the first fixing member, the fixing frame also includes a fastener, the fastener passing through the fastening hole and detachably connected to the second limiting post.

6. The test tube carrier as described in claim 3, characterized in that, The first fixing member has a positioning hole on the side facing the second fixing member. The positioning hole is arranged opposite to the test tube opening and is used to limit the movement of the test tube.

7. The test tube carrier as described in claim 6, characterized in that, The positioning hole includes a first segment, a second segment, and a third segment that are sequentially connected in a direction away from the second fixing member; The inner diameter of the third segment is smaller than that of the first segment, and the second segment is transitionally connected between the first segment and the third segment for contact with the test tube.

8. A test tube transfer device, characterized in that, It includes a transfer mechanism and a test tube carrier as described in any one of claims 1 to 7.

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