Sample tube adapter, sample tube loading seat and sample analyzer

Abstract

The utility model relates to a sample tube adapter, a sample tube loading seat and a sample analyzer, and relates to the technical field of blood detection. The sample tube adapter comprises an adapter body, wherein the adapter body is provided with a first end and a second end which are oppositely arranged; the inner cavity structure of the adapter body is divided by the positioning structure into a first cavity and a second cavity which are arranged in the axial direction, an opening of the first cavity is formed in the first end, an opening of the second cavity is formed in the second end, and the inner diameter of the first cavity is different from that of the second cavity; the positioning structure is provided with a first supporting face and a second supporting face, the distance between the first supporting face and the second end is X, the distance between the second supporting face and the first end is Y, and X-Y is smaller than or equal to 5 mm. And sample tubes with different specifications can be adapted by changing the mounting direction of the sample tube adapter. And the adaptive sample tube can be approximately kept at the same horizontal height, so that the sampling needle can be conveniently fed.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood detection technical field, especially a kind of sample tube adapter, sample tube loading seat and sample analyzer. BACKGROUND

[0002] At present, in the IVD blood detection field, various sample bearing devices are emerging in endlessly, and according to the bearing sample, there are mainly two categories of constant blood sample tube and trace blood sample tube. Among them, the constant blood sample tube is relatively unified in its size specification, capacity specification and the like, and can basically realize free switching between different instruments.

[0003] However, in the trace blood sample tube, the difference of various sizes is very large. According to the use mode, the trace blood sample tube can be divided into two categories: one is the trace blood sample tube that can be automatically mixed, and the other is the trace blood sample tube that is manually mixed. The trace blood sample tube that can be automatically mixed is also relatively unified in its size specification, capacity specification and the like, and can basically realize free switching within the instrument. However, the trace blood sample tube that is manually mixed has great difference in specification, not only in size and capacity specification, but also in structure.

[0004] Based on this background, an adapter is designed to adapt to most specifications of trace blood sample tubes on the market, to constrain the formation of a position state to the analyzer, so that the analyzer can complete sampling of different sample tube specifications with the same parameters, and to simplify the user's operation during the entire operation process. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of sample tube adapter, sample tube loading seat and sample analyzer for adapting different specifications of sample tube.

[0006] In the first aspect, the utility model provides a kind of sample tube adapter, which comprises: adapter body, which has first end and second end oppositely arranged along first direction, and first direction is the axial direction of the adapter body;And positioning structure, the positioning structure is connected in the adapter body, and the internal chamber structure of the adapter body is divided into first cavity and second cavity arranged along first direction, the opening of the first cavity is arranged at the first end, and the opening of the second cavity is arranged at the second end, wherein the inner diameter of the first cavity is different from the inner diameter of the second cavity, to adapt to sample tube of different outer diameter;

[0007] The positioning structure has first support surface and second support surface, the first support surface is used to support the tube bottom of sample tube inserted into the first cavity, and the second support surface is used to support the tube bottom of sample tube inserted into the second cavity;

[0008] Wherein, the distance between the first support surface and the second end is X, the distance between the second support surface and the first end is Y, and X, Y satisfy the following relationship: |X-Y|≤5mm.

[0009] In one embodiment, the first cavity comprises a relief groove away from the open end thereof, the relief groove circumferentially surrounds the axis of the first cavity and is located on the side of the first support surface away from the first end, the relief groove is configured to accommodate a skirt of a sample tube, the skirt is a tubular structure arranged at the bottom of the sample tube and surrounds the outside of the tube bottom.

[0010] In one embodiment, the positioning structure has a protruding portion protruding towards the first end, the end surface of the protruding portion towards the first end is a first support surface, and the outer peripheral surface of the protruding portion and the inner wall of the adapter body form the relief groove.

[0011] In one embodiment, the second support surface is parallel to the first support surface, and the distance between the second support surface and the first support surface is less than the depth of the relief groove.

[0012] In one embodiment, the depth of the relief groove is h, wherein 0mm≤h≤15mm.

[0013] In one embodiment, the second cavity comprises a frustum away from the open end thereof, the frustum is formed at one end of the positioning structure towards the second end, the large aperture end of the frustum is connected with the inner wall of the adapter body, and the bottom of the small aperture end of the frustum is provided with the second support surface.

[0014] In one embodiment, the thickness of the thinnest part of the positioning structure is greater than or equal to 0.5mm.

[0015] In one embodiment, X=Y.

[0016] In one embodiment, 50mm≥X≥25mm.

[0017] In one embodiment, 30mm≥X≥25mm.

[0018] In one embodiment, the outer side surface of the adapter body is a cylindrical surface.

[0019] In one embodiment, the inner diameter of the first cavity is greater than the inner diameter of the second cavity.

[0020] In one embodiment, the inner diameter of the first cavity is D1, wherein 11mm≤D1≤13.5mm.

[0021] In one embodiment, the second cavity has an inner diameter D2, wherein 8mm≤D2≤10mm.

[0022] In a second aspect, the utility model also provides a sample tube loading seat,

[0023] The sample tube loading seat is provided with a sample tube placing hole, which can directly accommodate a constant blood sample tube or accommodate a trace blood sample tube through the sample tube adapter.

[0024] The sample tube placing hole is configured such that when the sample tube adapter is installed in the sample tube placing hole, the first end and the second end of the adapter body are alternatively installed in the sample tube placing hole and abut against the positioning plane of the sample tube placing hole.

[0025] In a third aspect, the utility model also provides a sample analyzer, which comprises:

[0026] The sample tube loading seat described above;

[0027] A sampling module, which comprises a sampling needle and a displacement assembly, and the displacement assembly is used to drive the sampling needle to suck sample from a sample tube in the sample tube loading seat;

[0028] A control module, which is used to control the displacement assembly to drive the sampling needle to suck sample from a trace blood sample tube in the sample tube loading seat at a first needle lowering height, and is used to control the displacement assembly to drive the sampling needle to suck sample from a constant blood sample tube in the sample tube loading seat at a second needle lowering height different from the first needle lowering height.

[0029] Compared with the prior art, the utility model has the advantages that the adapter body and the positioning structure form a first cavity and a second cavity with different inner diameters, wherein the opening of the first cavity is arranged at the first end, and the opening of the second cavity is arranged at the second end. In use, the first end of the adapter body can be arranged upward so that the first cavity can accommodate a sample tube, or the second end of the adapter body can be arranged upward so that the second cavity can accommodate a sample tube. Since the inner diameters of the first cavity and the second cavity are different, different sample tubes can be matched.

[0030] Meanwhile, since the positioning structure separating the adapter body into two cavities has the first support surface and the second support surface, when a sample tube is carried by the first cavity, the positioning and support of the bottom of the sample tube can be realized by the first support surface which is away from the second end by a distance X, so that the sample tube in the first cavity meets the lower needle height of the analyzer. Similarly, when a sample tube is carried by the second cavity, the positioning and support of the bottom of the sample tube can be realized by the second support surface which is away from the first end by a distance Y, so that the sample tube in the second cavity meets the lower needle height of the analyzer. Moreover, since |X-Y|≤5mm, the difference between the lower needle height of the sample tube positioned by the first cavity and the lower needle height of the sample tube positioned by the second cavity is within the range of 5mm, and is basically kept at the same level, which facilitates the lowering of the sampling needle and reduces the adjustment times of the lowering distance of the sampling needle.

[0031] That is, the sample tube adapter provided by the application can not only adapt to sample tubes of different specifications, but also can make the adapted sample tubes have basically the same lower needle height. While reducing the cost, the lowering of the sampling needle during sample analysis is also facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0032] In the following, the application will be described in more detail based on embodiments and with reference to the drawings.

[0033] Figure 1 is a front view structural schematic diagram of the sample tube adapter in the embodiment of the application;

[0034] Figure 2 is Figure 1 is a sectional view structural schematic diagram of the A-A section;

[0035] Figure 3 is a sectional view structural schematic diagram of the sample tube adapter when the second end of the sample tube adapter faces upward in the embodiment of the application;

[0036] Figure 4 is a structural schematic diagram of the sample tube adapter when the sample tube adapter adapts to a b-type sample tube in the embodiment of the application;

[0037] Figure 5 is a structural schematic diagram of the sample tube adapter when the sample tube adapter adapts to an a-type sample tube in the embodiment of the application;

[0038] Figure 6 is a structural schematic diagram of the sample tube adapter when the sample tube adapter adapts to a b-type sample tube in the embodiment of the application;

[0039] Figure 7 is a structural schematic diagram of the sample tube adapter when the sample tube adapter adapts to a c-type sample tube in the embodiment of the application;

[0040] Figure 8is a structure schematic view of the sample tube adapter adapting the d type sample tube in the embodiment of the utility model;

[0041] Figure 9 is a cross section structure schematic view of the sample tube adapter in the embodiment of the utility model;

[0042] Figure 10 is the height contrast schematic view of the sample tube adapter adapting a, b, c, d four types of sample tubes in the embodiment of the utility model;

[0043] Figure 11 is a cross section structure schematic view of the automatic mixing micro blood sample tube in the related art;

[0044] Figure 12 is a structure schematic view of the sample tube loading seat adapting the constant blood sample tube in the embodiment of the utility model;

[0045] Figure 13 is a structure schematic view of the sample tube adapter adapting the d type sample tube in the embodiment of the utility model.

[0046] Reference signs:

[0047] 100, sample tube adapter;

[0048] 110, adapter body; 111, first end; 112, second end;

[0049] 120, positioning structure; 121, first support surface; 122, second support surface;

[0050] 130, first cavity; 131, avoiding groove;

[0051] 140, second cavity; 141, cone hole;

[0052] 200, sample tube loading seat; 210, sample tube placing hole; 211, positioning plane;

[0053] 310, a type sample tube; 320, b type sample tube; 330, c type sample tube; 340, d type sample tube; 350, automatic mixing micro blood sample tube; 360, constant blood sample tube;

[0054] 301, tube bottom; 302, skirt edge. DETAILED DESCRIPTION

[0055] The utility model will be further described in connection with the drawings.

[0056] Reference Figures 1-3As shown, the utility model provides a kind of sample tube adapter 100, it includes adapter body 110 and positioning structure 120, positioning structure 120 separates the inside chamber of adapter body 110 into first cavity 130 and second cavity 140 along the first direction arrangement, first direction is the axial direction of adapter body 110, the inner diameter of first cavity 130 and second cavity 140 is different, to adapt the sample tube of different outer diameter.

[0057] Adapter body 110 has oppositely arranged first end 111 and second end 112 along the first direction, wherein the opening of first cavity 130 is arranged at first end 111, and the opening of second cavity 140 is arranged at second end 112, the sample tube can be inserted into first cavity 130 from first end 111, or the sample tube can be inserted into second cavity 140 from second end 112.

[0058] First end 111 and second end 112 can be selectively installed in sample tube loading seat 200 and in contact with positioning plane 211 of sample tube placement hole 210 (visible Figure 4 ) in sample tube loading seat 200.In use, first end 111 can be installed in sample tube loading seat 200, so that second cavity 140 with opening arranged at second end 112 can allow the insertion of sample tube.Also, the installation direction of adapter body 110 can be adjusted, and second end 112 can be installed in sample tube loading seat 200, so that first cavity 130 with opening arranged at first end 111 can allow the insertion of sample tube.

[0059] That is, different specifications of sample tubes can be adapted by changing the installation direction of adapter body 110, achieving the effect of one adapter body 110 adapting different sample tubes.

[0060] Referring to Figure 2 and Figure 3 , positioning structure 120 has first support surface 121 facing first end 111, and second support surface 122 facing second end 112.

[0061] Referring to Figures 4-6 , first support surface 121 is used to support the tube bottom 301 of the sample tube inserted into first cavity 130, and second support surface 122 is used to support the tube bottom of the sample tube inserted into second cavity 140.

[0062] Wherein, the distance between first support surface 121 and second end 112 (in the first direction) is X, the distance between second support surface 122 and first end 111 (in the first direction) is Y, and X, Y satisfy the following relationship, |X-Y|≤5mm.

[0063] In the field of blood testing, micro blood sample tubes can be divided into two categories according to the usage mode: one is the micro blood sample tube that can be automatically mixed by the matching equipment (see two kinds of automatic mixing micro blood sample tubes 350 in Figure 11 ), and the other is the micro blood sample tube that is manually mixed (see four kinds of micro blood sample tubes matched by the sample tube adapter in Figure 10 ).

[0064] The outer diameter of the automatic mixing micro blood sample tube 350 is larger than the outer diameter of each kind of micro blood sample tube in Figure 10 , and the installation hole of the analyzer is matched with the automatic mixing micro blood sample tube 350, so that when the manually mixed micro blood sample tube is placed in the installation hole of the sample analyzer, the sample tube adapter needs to be installed at the installation hole of the sample analyzer first, and then the manually mixed micro blood sample tube that needs to be analyzed is placed in the sample tube adapter, so that the manually mixed micro blood sample tube is placed in place.

[0065] However, according to Figure 10 , it can be seen that the specifications of the manually mixed micro blood sample tube currently have great differences, not only in size, capacity specifications, but also in structure. For example, the bottom of part of the sample tube is not provided with a skirt 302 (such as the a-type sample tube 310 and the b-type sample tube 320 in Figure 10 ), and the bottom of another part of the sample tube is provided with a skirt 302 (such as the c-type sample tube 330 and the d-type sample tube 340 in Figure 10 ).

[0066] And, the sample tubes that also do not have a skirt 302 can have different outer diameter specifications, such as the outer diameter of the a-type sample tube 310 is larger than the outer diameter of the b-type sample tube 320. Currently, the sample tube adapter 100 with different hole diameters is mainly used to adapt to the sample tubes with different diameters, so as to avoid the inclination of the sample tube caused by the mismatch of the tube diameter.

[0067] Even if the c-type sample tube 330 and the d-type sample tube 340 have the same outer diameter and have the same skirt 302, the heights of the skirts 302 of the two are not the same. If the two kinds of sample tubes are installed in the same conventional sample tube adapter, the sampling height of different sample tubes will not be uniform due to the skirts 302 with different heights.

[0068] That is, in order to adapt to the sampling work of different specifications of the manual mixing micro blood sample tube, a set of sample tube adapters corresponding to each specification of the micro blood sample tube is arranged. The variety of sample tube adapters not only increases the material cost, but also requires the replacement of the sample tube adapter with the corresponding sample tube adapter when the user needs to analyze the blood in the sample tube of different specifications, which greatly increases the operation time and greatly troubles the user.

[0069] In order to reduce the cost and avoid the replacement of the sample tube adapter by the user during sample analysis, the sample tube adapter of the present application is designed.

[0070] Referring to FIGS. 1 to 4, Figure 5 , Figure 6 and Figure 10 , in the present application, the inner diameter of the first cavity 130 is different from the inner diameter of the second cavity 140. Among them, the first cavity 130 can adapt to the a-type sample tube 310, the c-type sample tube 330 and the d-type sample tube 340, and the second cavity 140 can adapt to the b-type sample tube 320. When the a-type sample tube 310 needs to be adapted by the sample tube adapter 100, the second end 112 needs to be inserted into the sample tube placement hole 210 of the sample tube loading seat 200 and the second end 112 needs to be in surface contact with the positioning plane 211 of the sample tube placement hole. At this time, the distance between the first supporting surface 121 and the positioning plane 211 of the sample tube placement hole 210 is equal to the distance X between the first supporting surface 121 and the second end 112. Then the a-type sample tube 310 is inserted into the first cavity 130, and the first supporting surface 121 of the positioning structure 120 contacts the tube bottom 301 of the a-type sample tube 310 to achieve the support and height positioning of the a-type sample tube 310.

[0071] When the b-type sample tube 320 needs to be adapted by the sample tube adapter 100, the first end 111 can be inserted into the sample tube placement hole 210 of the sample tube loading seat 200 and the first end 111 can be in surface contact with the positioning plane 211 of the sample tube placement hole 210. At this time, the distance between the second supporting surface 122 and the positioning plane 211 of the sample tube placement hole 210 is equal to the distance Y between the second supporting surface 122 and the first end 111. Then the b-type sample tube 320 is inserted into the second cavity 140, and the second supporting surface 122 of the positioning structure 120 contacts the tube bottom 301 of the b-type sample tube 320 to achieve the support and height positioning of the b-type sample tube 320.

[0072] In the present embodiment, X and Y satisfy |X-Y|≤5mm, that is, the difference between X and Y is not more than 5mm. By controlling the difference between X and Y, the difference between the height of the tube bottom 301 when the a-type sample tube 310 is installed in the sample tube adapter 100 and the height of the tube bottom 301 when the b-type sample tube 320 is installed in the sample tube adapter 100 is not more than 5mm.

[0073] The sample tube adapter provided by the present application can be adapted to a micro blood sample tube mixed by hand. Some micro blood sample tubes mixed by hand not only have a straight tube section, but also have a tapered tip structure at the bottom of the straight tube section, i.e., the tube bottom 301 of the sample tube is provided as a tapered tube bottom 301. Compared with the straight tube section, the inner cross-sectional dimension of the tip structure is smaller, and the liquid level in the tip structure is higher than that in the straight tube section for accommodating the same volume of sample. By providing the tube bottom 301 as a tapered tip structure, the sampling failure caused by insufficient needle distance of the sampling needle during sampling can be reduced.

[0074] In other implementations, the sample tube adapter 100 provided by the present application can also be adapted to a sample tube with a flat tube bottom 301 or a sample tube with a semispherical tube bottom 301.

[0075] In the present application, the specific shape of the positioning structure 120 is not limited to the block structure shown in the figure, but can also be provided as a plate structure, a spherical structure or a ring structure, etc. As long as it can form the first support surface 121 and the second support surface 122 that can support the sample tube.

[0076] In addition, the first support surface 121 and the second support surface 122 of the present application are preferably flat surfaces. In some implementations, the first support surface 121 and the second support surface 122 can also be curved surfaces (such as convex curved surfaces, concave curved surfaces, arc surfaces, etc.), or support surfaces formed by the top ends of a plurality of positioning protrusions.

[0077] In the present application, the positioning of the tube bottom 301 of the sample tube of different specifications is realized by the first support surface 121 and the second support surface 122, so that the sample tube adapter 100 can ensure that the height of the sample bottom in the sample tube is maintained at approximately the same level when adapting sample tubes of different specifications, thereby enabling the sampling needle to adopt the same needle lowering height when sampling the a-type sample tube 310 and the b-type sample tube 320, and completing the sampling of the specified sample amount.

[0078] In addition, compared with adjusting the needle lowering distance of the sampling needle when adapting sample tubes of different specifications, the sampling work is greatly simplified since the needle lowering distance of the sampling needle does not need to be frequently adjusted. Moreover, since the sample tube adapter 100 of the present application can maintain the tube bottom 301 of the sample tube at approximately the same height, the number of adjustments of the needle lowering distance is reduced, thereby reducing the probability of improper adjustment of the needle lowering distance, reducing the collision of the sampling needle with the sample tube caused by the sampling needle being lowered too deeply, and reducing the failure rate of the sampling process.

[0079] Referring to Figure 1 , Figure 5 and Figure 6As shown, in some implementations, the first cavity 130 and the second cavity 140 are configured to accommodate sample tubes with different outer diameters, thereby achieving the effect of matching sample tubes of different specifications.

[0080] It can be understood that, in another implementation, the first cavity 130 and the second cavity 140 can also be configured to accommodate sample tubes with the same outer diameter but different structures, for example, by structural design such that the first cavity 130 can accommodate a class a sample tube 310, and the second cavity 140 can accommodate a class c sample tube with the same outer diameter, thereby achieving the effect of matching sample tubes of different specifications.

[0081] Referring to Figure 2 and Figure 3 As shown, in some implementations, the first cavity 130 includes an avoidance groove 131 away from the opening end thereof, the avoidance groove 131 surrounds the axis of the first cavity along the circumference of the first cavity, and the avoidance groove 131 is located on the side of the first support surface 121 away from the first end 111. The avoidance groove 131 is configured to accommodate the skirt 302 of the sample tube. The skirt 302 is a tubular structure arranged at the bottom of the sample tube and surrounding the tube bottom 301. The length of the skirt 302 can be long or short, as long as the overhanging length of the skirt 302 downwardly extending from the tube bottom 301 is less than the depth of the avoidance groove 131. Figure 7 、 Figure 8 and Figure 10 As shown, the sample tube adapter 100 provided by the present application can not only accommodate a class d sample tube 340 with a skirt 302 extending downwardly from the tube bottom 301 for a long distance, but also can accommodate a class c sample tube 330 with a skirt 302 extending downwardly from the tube bottom 301 for a short distance. Of course, some sample tubes without a skirt 302 or sample tubes with a skirt 302 whose bottom end does not exceed the bottom end of the tube bottom 301 can also be inserted into the first cavity 130.

[0082] That is, by forming the avoidance groove 131, the sample tube with the skirt 302 extending beyond the tube bottom 301 can be accommodated in the first cavity 130, and the tube bottom 301 of the sample tube can contact the first support surface 121.

[0083] The depth h of the avoidance groove 131 is greater than the distance of the skirt 302 extending beyond the tube bottom 301, and the width of the avoidance groove 131 is greater than the wall thickness of the skirt 302, so that the avoidance groove 131 can completely accommodate the skirt 302 of the sample tube.

[0084] In some implementations, only the first cavity 130 is provided with the relief groove 131, and the second cavity 140 is not provided with the relief groove 131 structure. In some implementations, the second cavity 140 can also be provided with the relief groove 131 structure, and the relief groove 131 structure of the second cavity 140 is arranged on the side of the second support surface 122 away from the second end 112, so that the second cavity 140 can also be adapted to the sample tube provided with the skirt 302.

[0085] Referring to Figures 5-8 As shown, that is, the first cavity 130 provided with the relief groove 131 can not only be adapted to the sample tube without the skirt 302 by the first support surface 121, but also be adapted to the sample tube with the skirt 302 by the relief groove 131. Compared with the bottom of the first cavity 130 being provided as a flat structure, the adaptation range of the first cavity 130 is expanded, and it can be adapted to more types of trace blood sample tubes (such as the a-type sample tube 310, the c-type sample tube 330, and the d-type sample tube 340).

[0086] Referring to Figure 9 As shown, in some implementations, the positioning structure 120 has a protruding portion protruding towards the first end. The end surface of the protruding portion towards the first end 111 is the first support surface 121, and the outer peripheral surface of the protruding portion and the inner wall of the adapter body enclose the relief groove 131.

[0087] Figure 9 In some implementations, the outer peripheral surface of the protruding portion is a conical frustum outer peripheral surface, which is arranged at an angle with respect to the inner wall surface of the adapter body, so that the formed relief groove 131 is a slot structure with a wide opening and a narrow bottom. It is relatively easy to stretch the skirt 302 from the wide opening of the relief groove 131 into the relief groove 131. As the skirt 302 is further stretched into the relief groove 131, the inner wall of the skirt 302 will gradually come into contact with the outer peripheral surface of the protruding portion, so as to position the skirt 302 by the outer peripheral surface of the protruding portion and the inner wall surface of the skirt 302 abutting, so that the axis of the skirt 302 coincides with the axis of the positioning structure 120. In some implementations, the axis of the positioning structure 120 is collinear with the axis of the first cavity 130 and the axis of the adapter body. By the protruding portion, the axis of the skirt 302 coincides with the axis of the adapter body.

[0088] In other implementations, the outer peripheral surface of the protruding portion on one side of the positioning portion can also be provided as a cylindrical surface, so that the outer peripheral surface of the protruding portion is coaxially arranged with the inner wall surface of the adapter body, so that the formed relief groove 131 has a width substantially equal at all places in the first direction.

[0089] Referring to Figure 9As shown, the second support surface 122 is parallel to the first support surface 121, and the spacing between the second support surface 122 and the first support surface 121 is less than the depth of the avoidance groove 131. That is, the avoidance groove 131 of the first cavity 130 will partially overlap with the bottom of the second cavity 140 (near the second support surface 122) in the axial direction of the adapter body 110, which can shorten the length of the adapter body 110 in the axial direction while ensuring the depth of the cavity, thereby making the sample tube adapter 100 more compact.

[0090] In other implementations, the spacing between the first support surface 121 and the second support surface 122 can also be set larger, so that the first cavity 130 and the second cavity 140 are completely staggered in the axial direction, facilitating a smaller angle between the circumferential outer side of the protruding part and the inner wall of the adapter body 110, to form a deeper avoidance groove 131 to accommodate sample tubes with longer skirts 302.

[0091] Referring to Figure 2 As shown, in some implementations, the depth of the avoidance groove 131 is h, where 0mm≤h≤15mm. Preferably, 10mm≤h≤15mm, and the depth h of the avoidance groove 131 is greater than the length of the skirt 302 of a conventional sample tube extending from the tube bottom 301. This allows the avoidance groove 131 to adapt to most sample tubes on the market.

[0092] Referring to Figure 9 As shown, in some implementations, the second cavity includes a frustum-shaped hole away from the opening end thereof, the frustum-shaped hole is formed at one end of the positioning structure towards the second end, the large aperture end of the frustum-shaped hole is connected with the inner wall of the adapter body 110, and the bottom of the small aperture end of the frustum-shaped hole is provided with the second support surface.

[0093] That is, when inserting the sample tube into the opening of the second cavity 140, the bottom of the sample tube will extend into the frustum-shaped hole 141 formed by the positioning structure from the large aperture end of the frustum-shaped hole, so that the bottom of the sample tube is supported on the second support surface, and the tapered inner wall of the frustum-shaped hole can be used to fit the tube bottom 301 of the sample tube, better positioning the sample tube installed in the second cavity 140.

[0094] Moreover, since the frustum-shaped hole 141 is formed in the positioning structure 120, the vertical space occupied by the protruding part protruding towards the first end can be used to accommodate the bottom of the sample tube, thereby reducing the height of the sample tube adapter without reducing the accommodation depth, not only reducing the material cost but also reducing the space occupation.

[0095] In some implementations, the thickness of the thinnest part of the positioning structure 120 is greater than or equal to 0.5mm, such as Figure 9As shown, by controlling the thickness of the positioning structure 120 to be greater than or equal to 0.5 mm, the strength of the positioning structure 120 can support the sample tube without being deformed, thereby improving the stability of the sample tube placed in the sample tube adapter.

[0096] In the illustration, the circumferential outer side of the protruding part is arranged in parallel with the circumferential hole wall of the frustum hole 141. In other implementations, the inclination angle of the circumferential outer side of the protruding part can be controlled to be different from the inclination angle of the circumferential hole wall of the frustum hole 141, so that the circumferential outer side of the protruding part is arranged obliquely to the circumferential hole wall of the frustum hole 141.

[0097] In some implementations, the relief groove 131 can be arranged in the first cavity 130, and the frustum hole 141 can not be arranged in the second cavity 140. Alternatively, the relief groove 131 can not be arranged in the first cavity 130, and the frustum hole 141 can be arranged in the second cavity 140. Alternatively, neither the relief groove 131 nor the frustum hole 141 can be arranged in the first cavity 130 and the second cavity 140. That is, there is no correlation between whether the relief groove 131 is arranged and whether the frustum hole 141 is arranged. Whether the relief groove 131 and the frustum hole 141 are arranged can be selected according to actual needs.

[0098] Referring to Figure 10 As shown, in some implementations, X=Y, which can make the bottom height of the sample tube installed in the first cavity 130 equal to the bottom height of the sample tube installed in the second cavity 140, so that the bottom height of the sample tube installed in the first cavity and the second cavity is the same, and the needle insertion height of the sample needle is consistent, thereby simplifying the operation process.

[0099] At present, the types of sample tubes also include an automatic mixing micro blood sample tube 350 (see FIG. 12) which can be directly installed in the sample tube loading seat 200 without the sample tube adapter 100. Figure 11 When the automatic mixing micro blood sample tube 350 is installed in the sample tube loading seat 200, the distance between the bottom 301 of the automatic mixing micro blood sample tube 350 and the positioning plane of the sample tube placement hole 210 is far, so as to shorten the needle insertion distance of the sampling needle. As shown in Figure 11 As shown, both of the automatic mixing micro blood sample tubes 350 can be directly inserted into the sample tube loading seat 200, wherein the distance between the bottom 301 of the left automatic mixing micro blood sample tube 350 and the bottom surface thereof is 26 mm, and the distance between the bottom 301 of the right automatic mixing micro blood sample tube and the bottom surface thereof is greater than 30 mm and less than 50 mm.

[0100] In some implementations, in order to make the needle insertion height of the sampling needle consistent for the manually mixed micro tube and the automatic mixing micro blood sample tube 350, the value range of X in the present application is 50 mm≥X≥25 mm.

[0101] Preferably, 30mm≥X≥25mm, so that the height of the bottom 301 of the manually mixed microtiter tube placed in the sample tube adapter 100 is consistent with the height of the bottom 301 of the automatically mixed microtiter tube. Figure 11 The height of the bottom 301 of the automatically mixed microtiter blood sample tube on the left side is almost consistent, which can make the needle height of the sampling needle consistent for the manually mixed microtiter tube and the automatically mixed microtiter blood sample tube 350, simplifying the control process; at the same time, it can avoid the sample tube placed in the sample tube adapter 100 being too high, which requires a higher space above the sample tube loading seat, making the instrument more compact. And it can make the distance between the bottom of the sample tube and the positioning plane 211 of the sample tube placement hole 210 of the sample tube adapter 100 smaller, thereby reducing the center of gravity of the sample tube and avoiding instability due to the sample tube top extending out of the sample tube loading seat 200 too much.

[0102] In some implementations, the outer side of the adapter body 110 is a cylindrical surface. That is, the adapter body 110 is generally a straight tube structure, which is simple in structure and can be installed in the sample tube loading seat 200 in the first direction (the second end 112 downward) and in the opposite second direction (the second end 112 upward).

[0103] It can be understood that in other implementations, a concave structure or other shaped structure can also be provided on the outer side of the adapter body 110, as long as the maximum radial outer diameter of the adapter body 110 is equal to the hole diameter of the sample tube loading seat 200.

[0104] Referring to FIG. 1, the sample tube loading seat 200 is provided with a sample tube adapter 100, which is used to adapt the manually mixed microtiter tube and the automatically mixed microtiter blood sample tube. Figure 2 and Figure 3 As shown, the hole diameter of the first cavity 130 is greater than the hole diameter of the second cavity 140. The first cavity 130 can be used to adapt the sample tube with a larger outer diameter, and the second cavity 140 can be used to adapt the relatively thinner sample tube.

[0105] Referring to FIG. 1, the sample tube loading seat 200 is provided with a sample tube adapter 100, which is used to adapt the manually mixed microtiter tube and the automatically mixed microtiter blood sample tube. Figure 3 As shown, in some implementations, the inner diameter of the first cavity 130 is D1, where 11mm≤D1≤13.5mm, so that the first cavity 130 can adapt the manually mixed microtiter blood sample tube with an outer diameter of 9.5mm-11mm (such as one of the a-type sample tube 310, the c-type sample tube 330, and the d-type sample tube 340), while avoiding too large gaps between the sidewall of the sample tube and the inner wall of the first cavity 130, which can cause the sample tube to tilt, and avoid the sample tube tilting in the cavity, which can affect the sample needle puncture and sample suction.

[0106] Referring to FIG. 1, the sample tube loading seat 200 is provided with a sample tube adapter 100, which is used to adapt the manually mixed microtiter tube and the automatically mixed microtiter blood sample tube. Figure 3As shown, in some implementations, the inner diameter of the second cavity 140 is D2, where 8mm≤D2≤10mm, so that the second cavity 140 can fit a 7mm-8mm outer diameter manually mixed micro blood sample tube (such as in the type b sample tube 320), while avoiding excessive gap between the sidewall of the sample tube and the inner wall of the second cavity 140, so as to avoid the sample tube tilting, and avoid the sample needle puncturing the sample tube when the sample tube is tilted in the cavity.

[0107] By controlling the inner diameters of the first cavity 130 and the second cavity 140, most of the manually mixed micro blood sample tubes on the market can be covered, and a variety of micro blood sample tubes can be fed at a lower cost.

[0108] The thickness of the positioning structure 120 along the axial direction of the first cavity 130 is greater than or equal to 0.5mm, and the thickness of the positioning structure 120 can support the sample tube loaded with the sample.

[0109] In a second aspect, the utility model also provides a sample tube loading seat 200, the sample tube loading seat 200 is equipped with sample tube placing hole 210, sample tube placing hole 210 can directly contain constant blood sample tube (such as Figure 12 As shown, or through the above-mentioned sample tube adapter 100 contains a micro blood sample tube, the sample tube placing hole 210 is configured to be installed in the above-mentioned sample tube placing hole 210 when the sample tube adapter 100 is installed in the above-mentioned sample tube placing hole 210, the first end 111 and the second end 112 of the adapter body 110 are alternatively installed in the sample tube placing hole 210 and are in contact with the positioning plane 211 of the sample tube placing hole 210. In the figure, the sample tube placing hole 210 is a blind hole structure, and the bottom surface of the sample tube placing hole 210 can be used as the positioning plane 211 of the sample tube placing hole 210. In other implementations, a stepped hole structure of the sample tube placing hole 210 can also be used, and the stepped surface of the stepped hole structure is used as the positioning plane 211. When in use, the first end or the second end is in contact with the stepped surface to support the adapter body 110.

[0110] Since the sample tube placing hole 210 can adapt to the sample tube adapter 100, different specifications of sample tubes can be accommodated. The sample tube is kept at approximately the same height in the sample tube adapter 100, reducing the number of adjustments of the needle insertion distance, thereby reducing the probability of improper adjustment of the needle insertion distance, reducing the probability of collision between the sampling needle and the sample tube due to the sampling needle being inserted too deeply, and reducing the failure rate of the sampling process.

[0111] It should be noted that the sample tube loading seat 200 can not only install a manually mixed micro blood sample tube through the sample tube adapter 100, but also directly install an automatically mixed micro blood sample tube 350 or a constant blood sample tube 360.

[0112] The sample tube loading seat 200 can be a sample emergency seat or a sample rack. Alternatively, the sample tube loading seat 200 can have one or more sample tube placement holes 210. Preferably, when the sample tube loading seat 200 has multiple sample tube placement holes, the positioning plane 211 of each sample tube placement hole 210 can be set to the same height.

[0113] Thirdly, this utility model also provides a sample analyzer, which includes the sample tube loading seat 200 mentioned above, as well as a sampling module and a control module. The sampling module includes a sampling needle and a displacement component, and the displacement component is used to drive the sampling needle to draw samples from the sample tube in the sample tube loading seat 200.

[0114] The control module is used to control the displacement component to drive the sampling needle to draw samples from the micro sample tube in the sample tube loading seat 200 at a first needle height. The control module can also be used to control the displacement component to drive the sampling needle to draw samples from the constant blood sample tube in the sample tube loading seat 200 at a second needle height different from the first needle height.

[0115] Since the sample tube loading seat 200 is compatible with the sample tube adapter 100, the microtubes can be placed on the sample tube loading seat 200 through the sample tube adapter 100 during use, so that the bottom of the microtubes of different specifications is supported on the first support surface 121 or the second support surface 122, so that the bottom height of each microtube is approximately the same, and samples from microtubes of different specifications can be collected by the same needle height (first needle height).

[0116] By reducing the number of times the needle distance needs to be adjusted, the probability of improper needle distance adjustment is reduced, and the collision of the sampling needle with the sample tube due to excessive needle insertion is decreased, thus reducing the failure rate of the sampling process. Although the present invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sample tube adapter, characterized by, It comprises: an adapter body having a first end and a second end oppositely arranged along a first direction, the first direction being an axial direction of the adapter body; and a positioning structure connected in the adapter body, separating an internal cavity structure of the adapter body into a first cavity and a second cavity arranged along the first direction, an opening of the first cavity being arranged at the first end, an opening of the second cavity being arranged at the second end, wherein an inner diameter of the first cavity is different from an inner diameter of the second cavity to adapt to sample tubes of different outer diameters; the positioning structure has a first support surface for supporting a tube bottom of a sample tube inserted into the first cavity and a second support surface for supporting a tube bottom of a sample tube inserted into the second cavity; wherein a distance between the first support surface and the second end is X, a distance between the second support surface and the first end is Y, and X and Y satisfy the following relationship: |X-Y|≤5mm.

2. The sample tube adapter according to claim 1, wherein the first cavity comprises a relief groove away from an opening end thereof, the relief groove circumferentially surrounds an axis of the first cavity for one turn, and the relief groove is located on a side of the first support surface away from the first end, the relief groove is configured to accommodate a skirt of a sample tube, the skirt being a tubular structure arranged at a bottom of a sample tube and surrounding outside the tube bottom.

3. The sample tube adapter according to claim 2, wherein the positioning structure has a protruding portion protruding towards the first end, an end face of the protruding portion towards the first end being the first support surface, and an outer peripheral surface of the protruding portion and an inner wall of the adapter body form the relief groove.

4. The sample tube adapter according to claim 2, wherein the second support surface is parallel to the first support surface, and a spacing between the second support surface and the first support surface is less than a depth of the relief groove.

5. The sample tube adapter according to claim 2, wherein the depth of the relief groove is h, wherein 0mm≤h≤15mm.

6. The sample tube adapter according to claim 1, wherein the second cavity comprises a frustoconical hole away from an opening end thereof, the frustoconical hole being formed at an end of the positioning structure towards the second end, a large-diameter end of the frustoconical hole being connected with the inner wall of the adapter body, and a bottom of a small-diameter end of the frustoconical hole being provided with the second support surface.

7. The sample tube adapter according to any one of claims 1-6, wherein a thickness of a thinnest part of the positioning structure is greater than or equal to 0.5mm.

8. The sample tube adapter according to any one of claims 1-6, wherein X=Y.

9. The sample tube adapter according to any one of claims 1-6, wherein 50mm≥X≥25mm.

10. The sample tube adapter according to any one of claims 1-6, wherein 30mm≥X≥25mm.

11. The sample tube adapter according to any one of claims 1-6, wherein an outer side of the adapter body is a cylindrical surface.

12. The sample tube adapter according to any one of claims 1-6, wherein an inner diameter of the first cavity is larger than an inner diameter of the second cavity.

13. The sample tube adapter according to any one of claims 1-6, wherein an inner diameter of the first cavity is D1, wherein 11 mm≤D1≤13.5 mm.

14. The sample tube adapter according to any one of claims 1-6, wherein an inner diameter of the second cavity is D2, wherein 8 mm≤D2≤10 mm.

15. A sample tube loading seat, wherein the sample tube loading seat is provided with a sample tube placement hole, the sample tube placement hole is directly capable of accommodating a constant blood sample tube, or is capable of accommodating a micro blood sample tube through the sample tube adapter according to any one of claims 1-14; the sample tube placement hole is configured such that when the sample tube adapter is installed in the sample tube placement hole, the first end and the second end of the adapter body are installed in the sample tube placement hole and are in contact with the positioning plane of the sample tube placement hole.

16. A sample analyzer characterized by, It comprises: the sample tube loading seat according to claim 15; a sampling module, the sampling module comprises a sampling needle and a displacement assembly, the displacement assembly is used to drive the sampling needle to suck sample from a sample tube in the sample tube loading seat; a control module, used to control the displacement assembly to drive the sampling needle to suck sample from a micro blood sample tube in the sample tube loading seat at a first needle lowering height, and used to control the displacement assembly to drive the sampling needle to suck sample from a constant blood sample tube in the sample tube loading seat at a second needle lowering height different from the first needle lowering height.

Images