Cradle assembly and in vitro diagnostic device assembly containing the same

Abstract

A cradle assembly according to one embodiment of the present invention may include a first cradle supported on a bottom surface and having an in-vitro diagnostic device coupled to its front surface, and a second cradle coupled to cover a portion of an upper surface of the first cradle and selectively coupled to correspond to a front end or a rear end of the upper surface of the first cradle, having the in-vitro diagnostic device coupled to its front surface.

Description

[Technical Field]

[0001] The present invention relates to a cradle assembly and an in-vitro diagnostic device assembly including the same, and more particularly, to a cradle assembly that can be coupled in various ways to support members with different sizes and an in-vitro diagnostic device assembly including the same. [Background Art]

[0002] Recently, various simple test reagents, diagnostic agents and diagnostic devices have been developed to diagnose whether there is infection by pathogens such as viruses or bacteria, pregnancy, cancer, or the presence of harmful substances such as residual pesticides in specific raw materials such as food.

[0003] In particular, in-vitro diagnostic technology is a technology that quickly diagnoses diseases outside the body using substances derived from the human body such as blood, feces and urine, body fluid and saliva, plays an important role in clinical decision-making, and has become an essential and specialized element for patient treatment.

[0004] In-vitro diagnostic devices using this technology refer to devices including reagents used as medical equipment for tests using specimens such as tissues, blood and urine collected from the human body for purposes such as disease diagnosis and prognosis judgment, health status evaluation, disease treatment effect judgment and prevention, and since diagnosis is performed outside the human body, they impose less physical burden on the body than medical devices that require insertion into the human body.

[0005] Such in-vitro diagnostic devices can be manufactured in various sizes according to the type of test, and in order to perform multiple tests at one time, in-vitro diagnostic devices are connected by methods such as stacking. When in-vitro diagnostic devices are stacked and used in this way, since each device has different sizes and a fastening structure capable of connecting them is required, the current situation is that there is a need for the development of a cradle structure that can stably support stacked in-vitro diagnostic devices of different sizes. [Summary of the Invention] [Problem to be Solved by the Invention]

[0006] One embodiment of the present invention provides a cradle assembly and an in vitro diagnostic device assembly including the same, which can stably support in vitro diagnostic devices by being bonded to the rear surface in accordance with the stacking configuration, even when in vitro diagnostic devices of different sizes are stacked.

[0007] The problems that this invention aims to solve are not limited to those mentioned above, and other problems not mentioned herein can be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0008] A cradle assembly according to one embodiment of the present invention may include a first cradle supported at the bottom and to which an in vitro diagnostic device is coupled at the front; and a second cradle coupled to cover a portion of the top surface of the first cradle and selectively coupled to correspond to the front or rear end of the top surface of the first cradle, to which the in vitro diagnostic device is coupled at the front.

[0009] The upper or lower surface of the second cradle may be selectively coupled to the upper surface of the first cradle, and the length of the second cradle in the front-to-back direction may be relatively smaller than that of the first cradle.

[0010] The upper surface of the first cradle may be provided with a plurality of guide ribs that guide the second cradle to be selectively coupled to it.

[0011] The guide ribs may include a first guide rib, a second guide rib, and a third guide rib arranged at predetermined intervals from front to rear on the upper surface of the first cradle.

[0012] The lower surface of the second cradle may be provided with a first insertion rib that is selectively inserted into and connected to the first guide rib or the third guide rib.

[0013] A first support member may be provided on the lower surface of the second cradle to support the rear surface of the in vitro diagnostic device.

[0014] The upper surface of the second cradle may be provided with a second support member that is inserted into and coupled to the second guide rib and supports the rear surface of the in vitro diagnostic device.

[0015] The upper surface of the second cradle may be provided with a second insertion rib that is inserted into and coupled to the first guide rib.

[0016] The first guide rib, second guide rib, and third guide rib are arranged in pairs at predetermined intervals, and a first guide slit, a second guide slit, and a third guide slit can be formed between them.

[0017] The first guide rib may be positioned in the central portion of the upper surface of the first cradle, and the second and third guide ribs may be positioned in the rear end portion of the upper surface of the first cradle.

[0018] Multiple guide slits may be formed on the upper surface of the first cradle to guide the second cradle to be selectively coupled.

[0019] The upper surface of the first cradle is provided with a first fastening hook, and the upper and lower surfaces of the second cradle may be provided with a second fastening hook on which the first fastening hook is attached.

[0020] The first fastening hooks may be provided on both sides of the upper surface of the first cradle, facing each other, and the second fastening hooks may be provided on both sides of the upper and lower surfaces of the second cradle, facing each other.

[0021] Other embodiments of the present invention may include an in vitro diagnostic device assembly that is coupled to the front of the cradle assembly but has different sizes at the front and rear.

[0022] Although a mounting bracket for coupling with another said in-vitro diagnostic device is coupled to the top surface of said in-vitro diagnostic device, said mounting bracket may be provided with a plurality of fastening protrusions protruding therefrom.

[0023] A fixing protrusion on which said fastening protrusion is hung is provided protruding from the bottom surface of said in-vitro diagnostic device, and a protrusion groove to be inserted into said fixing protrusion may be recessed and formed in said fastening protrusion.

Effects of the Invention

[0024] According to an embodiment of the present invention, by selectively coupling the top surface or the bottom surface of a second cradle having a relatively smaller size than a first cradle to the top surface of the first cradle, assembly can be performed in various combinations. Therefore, even when in-vitro diagnostic devices having different sizes are stacked, the in-vitro diagnostic devices can be stably supported by being coupled to the rear surface according to the stacked configuration.

Brief Description of Drawings

[0025] [Figure 1] It is an exploded perspective view illustrating a cradle assembly according to an embodiment of the present invention.

[0026] [Figure 2] It is a perspective view illustrating a first cradle of a cradle assembly according to an embodiment of the present invention.

[0027] [Figure 3] It is a drawing illustrating an assembled portion of a cradle assembly according to an embodiment of the present invention.

[0028] [Figure 4] It is a drawing illustrating an example in which a cradle assembly according to an embodiment of the present invention is assembled.

[0029] [Figure 5] It is a drawing illustrating a coupling site of the cradle assembly illustrated in FIG. 4.

[0030] [Figure 6] Figure 4 is a cross-sectional view illustrating the joint portion of the cradle assembly shown.

[0031] [Figure 7] This drawing illustrates another example of a cradle assembly assembled according to one embodiment of the present invention.

[0032] [Figure 8] Figure 7 is a diagram illustrating the connection points of the cradle assembly shown in the diagram.

[0033] [Figure 9] Figure 7 is a cross-sectional view illustrating the joint portion of the cradle assembly shown.

[0034] [Figure 10] This drawing illustrates yet another example of a cradle assembly assembled according to one embodiment of the present invention.

[0035] [Figure 11] Figure 10 is a diagram illustrating the connection points of the cradle assembly shown in the diagram.

[0036] [Figure 12] Figure 10 is a cross-sectional view illustrating the joint portion of the cradle assembly shown.

[0037] [Figure 13] This is a side view illustrating an in vitro diagnostic device assembly according to one embodiment of the present invention.

[0038] [Figure 14] This is a side view illustrating an in vitro diagnostic device assembly according to another embodiment of the present invention.

[0039] [Figure 15] This is a side view illustrating an in vitro diagnostic device assembly according to yet another embodiment of the present invention.

[0040] [Figure 16] This is a perspective view illustrating the mounting bracket for an in vitro diagnostic device.

[0041] [Figure 17] This is a diagram illustrating the connection points of an in vitro diagnostic device. [Modes for carrying out the invention]

[0042] While the present invention can be subjected to various transformations and has many embodiments, specific embodiments will be illustrated in detail in the drawings. However, this is not intended to limit the present invention to specific embodiments, but rather should be understood to include all transformations, equivalents, or substitutes that fall within the concept and technical scope of the present invention. If it is determined that a specific explanation of related prior art in describing the present invention may obscure the gist of the invention, such detailed explanation will be omitted.

[0043] The terms "First," "Second," etc., may be used to describe a variety of components, but such components should not be limited by these terms. The terms are used solely for the purpose of distinguishing one component from another.

[0044] The terminology used in this application is used solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “includes” or “having” are intended to specify the existence of features, figures, stages, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preemptively exclude the possibility of the existence or addition of one or more other features, figures, stages, operations, components, parts, or combinations thereof.

[0045] Furthermore, throughout the specification, the term "connected" does not only mean that two or more components are directly connected, but may also mean that two or more components are indirectly connected through other components, that they are not only physically connected but also electrically connected, or that they are a single unit despite being referred to by different names depending on their location or function.

[0046] Furthermore, when described as being formed or positioned "above or below" each component, "above or below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or positioned between the two components. Also, when expressed as "above or below," it can include not only an upward direction but also a downward direction relative to one component.

[0047] Hereinafter, an embodiment of the cradle assembly and an in vitro diagnostic device assembly including the same according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components will be assigned the same drawing number, and redundant descriptions thereof will be omitted.

[0048] Figure 1 is an exploded perspective view illustrating a cradle assembly according to one embodiment of the present invention, Figure 2 is a perspective view illustrating the first cradle of the cradle assembly according to one embodiment of the present invention, and Figure 3 is a drawing illustrating the assembly portion of the cradle assembly according to one embodiment of the present invention.

[0049] As shown in the illustration above, a cradle assembly according to one embodiment of the present invention may include a first cradle 10 supported on the bottom surface and to which an in vitro diagnostic device is coupled on the front, and a second cradle 50 coupled to cover a portion of the top surface of the first cradle 10 and selectively coupled to correspond to the front or rear end of the top surface of the first cradle 10, and to which the in vitro diagnostic device 100 is coupled on the front.

[0050] The first cradle 10 and the second cradle 50 may be made in the shape of a rectangular hexahedron and may have an open interior. In this embodiment, the first cradle 10 constitutes the lower part supported by the bottom surface, and the second cradle 50 constitutes the upper part by being coupled to the top surface of the first cradle 10. The first cradle 10 and the second cradle 50 can be coupled in various combinations to stably support the in vitro diagnostic equipment 100, which can be arranged in various combinations, on the bottom surface. That is, the bottom surface of the second cradle 50 may be coupled to the top surface of the first cradle 10, or it may be rotated by 180° through inversion and coupled to the top surface. Furthermore, in this embodiment, the second cradle 50 is relatively smaller in size than the first cradle 10, but its length in the front-to-back direction may be relatively smaller.

[0051] The upper surface of the first cradle 10 may be provided with a plurality of guide ribs 20 that guide the second cradle 50 to be selectively coupled. The guide ribs 20 may include a first guide rib 22, a second guide rib 24, and a third guide rib 26 arranged at predetermined intervals from front to rear on the upper surface of the first cradle 10.

[0052] Referring to Figure 6, the first guide rib 22, the second guide rib 24, and the third guide rib 26 are pairs of ribs arranged at predetermined intervals, with the first guide slit 23, the second guide slit 25, and the third guide slit 27 formed between them, and the first insertion rib 60, the second support member 70, and the second insertion rib 72 can be inserted into the guide slits 23, 25, and 27.

[0053] Referring again to Figure 2, the first guide rib 22 may be positioned in the central portion of the upper surface of the first cradle 10, while the second guide rib 24 and the third guide rib 26 may be positioned in the rear end portion of the upper surface of the first cradle 10. This is merely an example presented in this embodiment, and the guide ribs 20 may be positioned in various locations for coupling with the second cradle 50.

[0054] Furthermore, although the above description assumes that guide slits 23, 25, and 27 are formed between a pair of guide ribs 20, it is also possible to configure the guide slits 23, 25, and 27 to be formed directly on the upper surface of the first cradle 10.

[0055] The guide rib 20 extends long in the width direction from left to right on the upper surface of the first cradle 10, and the second cradle 50, which is joined by the insertion ribs 60 and 72, is stably supported.

[0056] On the other hand, the upper surface of the first cradle 10 is provided with a first fastening hook 30, and the upper and lower surfaces of the second cradle 50 are provided with second fastening hooks 64 on which the first fastening hook 30 is attached. The reason why the second fastening hooks 64 are provided on the upper and lower surfaces of the second cradle 50 is that the upper or lower surface of the second cradle 50 can be selectively inverted and connected to the upper surface of the first cradle 10.

[0057] The first fastening hooks 30 may be provided on both sides of the upper surface of the first cradle 10 so as to face each other, and the second fastening hooks 64 may be provided on both sides of the upper and lower surfaces of the second cradle 50 so as to face each other. In addition, multiple first fastening hooks 30 may be provided on both sides of the upper surface of the first cradle 10 at a predetermined distance apart in the front and rear, and multiple first fastening hooks 64 may be provided on both sides of the upper and lower surfaces of the second cradle 50 at a predetermined distance apart in the front and rear. The positions of the first fastening hooks 30 and second fastening hooks 64 described above are merely examples, and they can be arranged in a variety of positions.

[0058] The upper surface of the first cradle 10 has fastening holes 32 for fastening with fastening bosses 66 provided on the upper and lower surfaces of the second cradle 50. With the first cradle 10 and the second cradle 50 temporarily joined through the guide rib 20, the user can finally complete the joining by fastening screws 34 through the fastening holes 32 to the fastening bosses 66. The lower surface of the first cradle 10 may be provided with a number of support pads 36 made of rubber or the like.

[0059] The lower surface of the second cradle 50 may be provided with a first insertion rib 60 which can be selectively inserted into and connected to either the first guide rib 22 or the third guide rib 26. The first insertion rib 60 is provided on the lower surface of the second cradle 50 and is elongated along the width direction from left to right, and can be selectively inserted into either the first guide slit 23 or the third guide slit 27.

[0060] Furthermore, a first support member 62 for supporting the rear surface of the in vitro diagnostic device 100 may be provided on the lower surface of the second cradle 50. The first support member 62 may be provided on the lower surface of the second cradle 50, extending along the width direction from left to right.

[0061] On the other hand, the upper surface of the second cradle 50 may be provided with a second support member 70 for supporting the rear surface of the in vitro diagnostic device 100. Furthermore, the upper surface of the second cradle 50 may be provided with a second insertion rib 72 that is inserted into the first guide slit 23 of the first guide rib 22. The second support member 70 and the second insertion rib 72 may be provided on the upper surface of the second cradle 50, extending along the width direction from left to right.

[0062] In this embodiment, the second support member 70 supports the rear surface of the in vitro diagnostic device 100 when not coupled to the first cradle 50, and can be inserted into the third guide slit 27 when coupled to the second cradle 50. This is merely one example, and the aforementioned first support member 62 may also perform the coupling function between the cradles in the same way as the second support member 70.

[0063] Furthermore, the upper surface of the second cradle 50 may be provided with a third fastening hook 74 and a fastening boss 76, similar to the lower surface. The third fastening hook 74 and fastening boss 76 can be fastened to the first fastening hook 30 and fastening hole 32 of the first cradle 10.

[0064] The following describes various examples of how a cradle assembly according to one embodiment of the present invention can be assembled. In this embodiment, a total of three assembly examples are described, but the invention is not limited thereto, and various assembly examples can be presented depending on the size and form of the in vitro diagnostic device 100.

[0065] First Assembly Example

[0066] Figure 4 is a drawing illustrating an example of a cradle assembly assembled according to one embodiment of the present invention, Figure 5 is a drawing illustrating the coupling portion of the cradle assembly shown in Figure 4, and Figure 6 is a cross-sectional view illustrating the coupling portion of the cradle assembly shown in Figure 4.

[0067] Referring to this, the two can be assembled by joining the lower surface of the second cradle 50 to the upper surface of the first cradle 10. At this time, the first insertion rib 60 is inserted into and joined to the first guide slit 23 of the first guide rib 22, and the front surface of the second cradle 50 is positioned to coincide with the front surface of the first cradle 10.

[0068] In this state, the front surfaces of the first cradle 10 and the second cradle 50 coincide, allowing them to simultaneously support the rear surfaces of the two stacked in vitro diagnostic devices 100, and the second support member 70 provided on the upper surface of the second cradle 50 can support the rear surfaces of the three stacked in vitro diagnostic devices 100.

[0069] Second Assembly Example

[0070] Figure 7 is a drawing illustrating another example of a cradle assembly assembled according to one embodiment of the present invention, Figure 8 is a drawing illustrating the coupling portion of the cradle assembly shown in Figure 7, and Figure 9 is a cross-sectional view illustrating the coupling portion of the cradle assembly shown in Figure 7.

[0071] Referring to this, the two can be assembled by joining the lower surface of the second cradle 50 to the upper surface of the first cradle 10. At this time, the second cradle 50 may be moved further back than in the previously described embodiment before joining. The first insertion rib 60 is inserted into and joined to the third guide rib 26 of the third guide slit 27, the front surface of the second cradle 50 is positioned behind the front surface of the first cradle 10, and the rear surface of the second cradle 50 is positioned to coincide with the rear surface of the first cradle 10.

[0072] In this configuration, the second cradle 50 is positioned at the rear, so if the in vitro diagnostic equipment 100, which is stacked in two layers, is large enough to protrude to the rear, the rear surface of the in vitro diagnostic equipment 100 can be stably supported. In addition, the second support member 70 provided on the upper surface of the second cradle 50 can support the rear surface of the in vitro diagnostic equipment 100, which is stacked in three layers.

[0073] Third Assembly Example

[0074] Figure 10 is a drawing illustrating yet another example of a cradle assembly assembled according to one embodiment of the present invention, Figure 11 is a drawing illustrating the coupling portion of the cradle assembly shown in Figure 10, and Figure 12 is a cross-sectional view illustrating the coupling portion of the cradle assembly shown in Figure 10.

[0075] Referring to this, in this assembly example, the second cradle 50 can be inverted so that the upper surface of the second cradle 50 is joined to the upper surface of the first cradle 10. At this time, the second support member 70 is inserted into the second guide slit 25 of the second guide rib 24, and the third insertion rib 72 is inserted into the second guide slit 23 of the first guide rib 22 and joined. The front surface of the second cradle 50 is located behind the front surface of the first cradle 10, and the rear surface of the second cradle 50 is positioned to coincide with the rear surface of the first cradle 10.

[0076] In this configuration, the second cradle 50 is positioned at the rear, so if the in vitro diagnostic equipment 100, which is stacked in two layers, is large enough to protrude to the rear, the rear surface of the in vitro diagnostic equipment 100 can be stably supported. In addition, the first support member 62, which is provided on the lower surface of the second cradle 50, can support the rear surface of the in vitro diagnostic equipment 100, which is stacked in three layers. At this time, the first support member 62 is positioned at a location corresponding to the front of the second cradle 50, so the rear surface of a small in vitro diagnostic equipment 100, which is stacked in three layers, can be stably supported.

[0077] Figure 13 is a side view illustrating an in vitro diagnostic device assembly according to one embodiment of the present invention, Figure 14 is a side view illustrating an in vitro diagnostic device assembly according to another embodiment of the present invention, and Figure 15 is a side view illustrating an in vitro diagnostic device assembly according to yet another embodiment of the present invention. Figure 13 illustrates the cradle assembly shown in Figure 5, Figure 14 illustrates the cradle assembly shown in Figure 8, and Figure 15 illustrates the cradle assembly shown in Figure 11.

[0078] Although the in vitro diagnostic device 100 is coupled to the front of the cradle assembly, it can have different sizes at the front and rear. The drawings show a first in vitro diagnostic device 110 and a second in vitro diagnostic device 120, respectively, which have different sizes at the front and rear.

[0079] Referring to Figure 13, two second in vitro diagnostic devices 120 can be stacked on top of the relatively large first in vitro diagnostic device 110. In this case, the in vitro diagnostic device 100 must be stacked on top of the first in vitro diagnostic device 100 and its front surface must be moved backward. Therefore, the rear surface of the second in vitro diagnostic device 120 stacked in three layers may protrude backward. In that case, there is a risk that the in vitro diagnostic device 100 may tip backward due to the weight of the second in vitro diagnostic device 120.

[0080] In this case, if the in vitro diagnostic device 100 is supported by the assembled cradle assembly as in this embodiment, the rear surfaces of the in vitro diagnostic device 100 can be integrally supported by the first in vitro diagnostic device 110 and the second in vitro diagnostic device 120, which are stacked in one and two layers, and the rear surface of the second in vitro diagnostic device 120, which is stacked in three layers, can be supported by the second support member 70.

[0081] Referring to Figure 14, three second in vitro diagnostic devices 120, each having the same size, can be stacked in layers. In this case, the rear surfaces of the second in vitro diagnostic devices 120 stacked in two and three layers may protrude backward. As a result, there is a risk that the in vitro diagnostic device 100 may tip backward due to the weight of the second in vitro diagnostic device 120.

[0082] In this embodiment, if the assembled cradle assembly supports the in vitro diagnostic device 100, the rear surface of the second in vitro diagnostic device 120, which is stacked in two or three layers, can be stably supported. Although this drawing only illustrates the case where the second in vitro diagnostic device 120 is stacked in three layers, the cradle assembly can also be assembled as described above to support the rear surface of the first in vitro diagnostic device 110 when the first in vitro diagnostic device 110 is stacked in three layers.

[0083] Referring to Figure 15, the first in vitro diagnostic device 110 can be stacked in the first and second layers, and the second in vitro diagnostic device 120 can be stacked in the third layer. In this case, the rear surfaces of the first in vitro diagnostic device 110 and the second in vitro diagnostic device 120 stacked in the second and third layers may protrude backward. If this occurs, there is a risk that the in vitro diagnostic device 100 may tip backward due to the weight of the first in vitro diagnostic device 110 and the second in vitro diagnostic device 120.

[0084] In this embodiment, if the in vitro diagnostic device 100 is supported by the assembled cradle assembly, the rear surfaces of the first in vitro diagnostic device 110 and the second in vitro diagnostic device 120, which are stacked in two and three layers, can be stably supported. The rear surface of the second in vitro diagnostic device 120, which is stacked in three layers, can be supported by the first support member 62.

[0085] Figure 16 is a perspective view illustrating the mounting bracket for an in vitro diagnostic device, and Figure 17 is a diagram illustrating the connection point of the in vitro diagnostic device.

[0086] Referring to this, a mounting bracket 102 for connecting with other in vitro diagnostic devices 100 is attached to the upper surface of the in vitro diagnostic device 100, and the mounting bracket 102 may be provided with multiple fastening protrusions 104 protruding from it. The mounting bracket 102 may be plate-shaped and can be placed on a recessed portion of the upper surface of the in vitro diagnostic device 100.

[0087] The lower surface of the in vitro diagnostic device 100 is provided with a protruding fixing projection 108 onto which a fastening projection 104 is attached, and the fastening projection 104 may have a recessed projection groove 105 into which the fixing projection 108 is inserted. Therefore, when the in vitro diagnostic devices 100, stacked in a pre-assembled state, are slid forward, the fixing projection 108 can be inserted into the projection groove 105 and stably joined together.

[0088] Although the above has been described with reference to specific embodiments of the present invention, a person with ordinary skill in the relevant art will understand that the present invention can be modified and altered in various ways without departing from the spirit and scope of the invention as described in the following claims. [Explanation of Symbols]

[0089] 10: First Cradle 20: Guide Rib 22: First guide rib 23: First guide slit 24: Second guide rib 25: Second guide slit 26: Third guide rib 27: Third guide slit 30: First fastening hook 32: Conclusion Hall 34: Screw 36: Support pad 50: Second Cradle 60: First insertion rib 62: First support member 64: Second fastening hook 66: Final Boss 70: Second support member 72: Second insertion rib 74: Third fastening hook 76: Final Boss 100: In Vitro Diagnostic Equipment 102: Mounting bracket 104: Fastening protrusion 105: Protrusion groove 108: Fixed protrusion 110: First In Vitro Diagnostic Equipment 120: Second In Vitro Diagnostic Equipment

Claims

1. A first cradle supported at the bottom and to which an in vitro diagnostic device is attached at the front; and An in vitro diagnostic device cradle assembly comprising a second cradle coupled to cover a portion of the upper surface of the first cradle, selectively coupled to correspond to the front or rear end of the upper surface of the first cradle, and to which the in vitro diagnostic device is coupled on the front surface.

2. The cradle assembly for an in vitro diagnostic device according to claim 1, wherein the upper or lower surface of the second cradle is selectively coupled to the upper surface of the first cradle, and the length of the second cradle in the front-to-back direction is relatively smaller than that of the first cradle.

3. The cradle assembly for an in vitro diagnostic device according to claim 1, wherein the upper surface of the first cradle is provided with a plurality of guide ribs that guide the second cradle to be selectively coupled.

4. The aforementioned guide rib is The cradle assembly for an in vitro diagnostic device according to claim 3, further comprising a first guide rib, a second guide rib, and a third guide rib arranged at predetermined intervals from front to rear on the upper surface of the first cradle.

5. The cradle assembly for an in vitro diagnostic device according to claim 4, wherein the lower surface of the second cradle is provided with a first insertion rib that is selectively inserted into and coupled to the first guide rib or the third guide rib.

6. The cradle assembly for an in vitro diagnostic device according to claim 4, wherein the lower surface of the second cradle is provided with a first support member that supports the rear surface of the in vitro diagnostic device.

7. The cradle assembly for an in vitro diagnostic device according to claim 4, wherein the upper surface of the second cradle is provided with a second support member that is inserted into and coupled to the second guide rib and supports the rear surface of the in vitro diagnostic device.

8. The cradle assembly for an in vitro diagnostic device according to claim 7, wherein the upper surface of the second cradle is provided with a second insertion rib that is inserted into and coupled to the first guide rib.

9. The cradle assembly for an in vitro diagnostic device according to claim 4, wherein the first guide rib, second guide rib, and third guide rib are a pair of ribs arranged at a predetermined interval, forming a first guide slit, a second guide slit, and a third guide slit between them.

10. The cradle assembly for an in vitro diagnostic device according to claim 4, wherein the first guide rib is positioned in the central portion of the upper surface of the first cradle, and the second guide rib and the third guide rib are positioned in the rear end portion of the upper surface of the first cradle.

11. The cradle assembly for an in vitro diagnostic device according to claim 1, wherein a plurality of guide slits are formed on the upper surface of the first cradle to guide the second cradle to be selectively coupled.

12. The cradle assembly for an in vitro diagnostic device according to claim 11, wherein the upper surface of the first cradle is provided with a first fastening hook, and the upper and lower surfaces of the second cradle are provided with second fastening hooks on which the first fastening hook is attached.

13. The cradle assembly for an in vitro diagnostic device according to claim 12, wherein the first fastening hooks are provided on both sides of the upper surface of the first cradle so as to face each other, and the second fastening hooks are provided on both sides of the upper and lower surfaces of the second cradle so as to face each other.

14. A cradle assembly as described in any one of claims 1 to 10; and An in vitro diagnostic device assembly comprising an in vitro diagnostic device that is coupled to the front of the cradle assembly but has different sizes at the front and rear.

15. The in vitro diagnostic device assembly according to claim 14, wherein a mounting bracket for coupling with other in vitro diagnostic devices is attached to the upper surface of the in vitro diagnostic device, and the mounting bracket is provided with a plurality of fastening protrusions.

16. The in vitro diagnostic device assembly according to claim 15, wherein the lower surface of the in vitro diagnostic device is provided with a fixing projection on which the fastening projection is attached, and the fastening projection is formed by recessing a projection groove into which the fixing projection is inserted.

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