Test tube support plate and sample injection device

Abstract

The test tube support plate includes a plate main body and a cover. The plate main body holds a microcentrifuge tube in a state where the cover is not installed to the upper opening of the container main body. The cover is formed with a through hole corresponding to the container main body and is disposed above the seal.

Description

Technical Field

[0001] This invention relates to a test tube support plate and a sample injection device. Background Technology

[0002] A sample injection device is known as a means of injecting a sample contained in a sample container into an analytical apparatus such as a chromatograph. For example, in the sample injection device described in Patent Document 1, a sample container for holding the sample is provided. A sealing member such as a septum is installed at the upper opening of the sample container. Furthermore, a cover with an opening that exposes the sealing member is installed at the upper part of the sample container.

[0003] The needle of the syringe in the sample injection device passes through the sealing member exposed from the opening of the cap and is inserted into the sample inside the container body. In this state, by pulling the plunger upward, the sample in the sample container is drawn into the syringe barrel through the needle. Furthermore, when the needle pierces the sample injection section of the analytical device, by pulling the plunger downward, the sample in the syringe barrel is injected into the sample injection section through the needle.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2021-25907 Summary of the Invention

[0005] Technical problems to be solved

[0006] Microcentrifuge tubes are known as general-purpose containers for storing samples. Due to their low cost, microcentrifuge tubes are widely used for sample processing. For example, they are used for pretreatment such as centrifugation because caps can be easily attached to the container body. Furthermore, microcentrifuge tubes can also be used as sample containers for storing analyte samples.

[0007] However, if the microcentrifuge tube is placed in the sample injection device with the cap attached to the sample container, excessive force will be applied to the needle when the syringe needle penetrates the cap of the microcentrifuge tube, which may cause damage such as needle deterioration or bending. In addition, the microcentrifuge tube may lift up when the needle is pulled out from the cap.

[0008] On the other hand, when microcentrifuge tubes are placed in the sample injection device without the cap attached, sample evaporation may corrode the device, making it impossible to contain acids or other samples within the container. Furthermore, if the sample evaporates while awaiting analysis, reliable quantitative analysis becomes impossible. Thus, using microcentrifuge tubes can sometimes lead to inadequate sample analysis.

[0009] The purpose of this invention is to provide a test tube support plate and a sample injection device that enable appropriate sample analysis using microcentrifuge tubes.

[0010] Technical solutions to the problem

[0011] One embodiment of the present invention relates to a test tube support plate for supporting a microcentrifuge tube integrally formed with a container body and a cap, characterized in that it comprises: a plate body that holds the microcentrifuge tube in a state where the cap is not installed in the upper opening of the container body; a sealing member disposed above the container body of the microcentrifuge tube held by the plate body; and a cover that has a first through hole corresponding to the container body and is disposed above the sealing member.

[0012] Another embodiment of the present invention relates to a test tube support plate for supporting a microcentrifuge tube integrally formed with a container body and a cap using a seal, characterized in that it comprises: a plate body that holds the microcentrifuge tube in a state where the cap is not installed in the upper opening of the container body; and a cover that has a first through hole corresponding to the container body and is disposed above the seal.

[0013] A further embodiment of the present invention relates to a sample injection device comprising: the test tube support plate described above; and an injection needle that is inserted into the container body of the microcentrifuge tube through a first through hole formed in the cover of the test tube support plate.

[0014] Invention Effects

[0015] According to the present invention, sample analysis can be performed appropriately using microcentrifuge tubes. Attached Figure Description

[0016] [ Figure 1 ] Figure 1 This is a block diagram showing the configuration of an analytical apparatus, including a sample injection device according to one embodiment of the present invention.

[0017] [ Figure 2 ] Figure 2 It is an enlarged perspective view showing a part of the sample injection device.

[0018] [ Figure 3 ] Figure 3 It is a schematic diagram showing the structure of microcentrifuge tubes.

[0019] [ Figure 4 ] Figure 4 This is an exploded perspective view of the test tube support plate.

[0020] [ Figure 5 ] Figure 5This is an enlarged perspective view of a part of the main body of the display panel.

[0021] [ Figure 6 ] Figure 6 This is a perspective view showing the lower part of the cover. Detailed Implementation

[0022] 1. Composition of the analytical apparatus

[0023] Hereinafter, the test tube support plate and sample injection device according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 This is a block diagram showing the configuration of an analytical apparatus, including a sample injection device according to one embodiment of the present invention. Figure 1 As shown, in this example, the analytical apparatus 300 is a liquid chromatograph, comprising a sample injection device 200, a mobile phase vial 310, a delivery pump 320, a column oven 330, and a detector 340. The mobile phase vial 310 stores a liquid mobile phase such as an aqueous solution or an organic solvent. The delivery pump 320 delivers the mobile phase stored in the mobile phase vial 310 downstream under positive pressure.

[0024] Figure 2 This is an enlarged perspective view showing a portion of the sample injection device 200. (Example) Figure 2 As shown, the sample injection device 200 includes Figure 1 The sample injection device 200 includes an injection needle 210 (hereinafter referred to simply as needle 210) and a holder 220. Furthermore, the sample injection device 200 includes a needle drive unit (not shown) that drives the needle 210. A test tube support plate 100 is placed on the holder 220. Figure 2 In the example, three test tube support plates 100 are placed on the shelf 220 in a row.

[0025] The test tube support plate 100 supports multiple microcentrifuge tubes 10. Figure 3 This is a schematic diagram showing the configuration of the microcentrifuge tube 10. (Example) Figure 3 As shown in the left-hand region, the microcentrifuge tube 10 includes a container body 11, a cap 12, and a connecting member 13. The container body 11, cap 12, and connecting member 13 are integrally formed, for example, from a resin material. The upper part of the container body 11 is connected to the side of the cap 12 via the connecting member 13.

[0026] The user can open the container body 11 by folding the connecting member 13 inward and pressing the cover 12 into the upper opening of the container body 11. Figure 3 As shown in the right-hand region, the lid 12 is mounted on the container body 11. A claw 12a protruding laterally is formed on the side of the lid 12. The user can open the lid 12 by pinching the claw 12a and pulling it up. Figure 3 As shown in the left-hand area, the lid 12 is removed from the container body 11.

[0027] Each microcentrifuge tube 10 is supported on the test tube support plate 100 with the analyte sample housed in the container body 11 and the cap 12 not attached to the container body 11. Details of the test tube support plate 100 will be described later. Figure 1 The sample injection device 200 draws a sample from any microcentrifuge tube 10 supported by the test tube support plate 100 through the needle 210, and injects the drawn sample into the mobile phase pressurized by the delivery pump 320.

[0028] The column oven 330 houses the separation column 331 and maintains it at a predetermined constant temperature. The sample injected by the sample injection device 200, along with the mobile phase, is introduced into the separation column 331. The separation column 331 separates the introduced sample into individual components based on differences in chemical properties or composition. The detector 340 detects the components of the sample separated by the separation column 331 and outputs a detection signal displaying the detection intensity. The detection signal output by the detector 340 is used to generate a chromatogram showing the relationship between the retention time and detection intensity of each component of the sample.

[0029] 2. Test tube support plate

[0030] To facilitate the explanation of the structure of the test tube support plate 100, the two orthogonal directions in the horizontal plane are defined as the first direction and the second direction, respectively. Figure 4 This is an exploded perspective view of the test tube support plate 100. (See attached image.) Figure 4 As shown, the test tube support plate 100 includes a plate body 110, a sealing element 120, a buffer pad 130, and a cover 140.

[0031] The main body 110 has a generally rectangular shape, with one pair of sides extending along a first direction and the other pair of sides extending along a second direction. In this example, the main body 110 is formed of polypropylene, but the embodiment is not limited to this. The main body 110 may also be formed of other resins or metals. On the upper surface of the main body 110, a plurality of upwardly projecting protrusions 111 are formed and arranged along the first and second directions. In this example, three protrusions 111 are arranged in the first direction and eight protrusions 111 are arranged in the second direction. Therefore, 24 protrusions 111 are formed on the upper surface of the main body 110.

[0032] Figure 5 This is an enlarged perspective view of a portion of the main body 110 of the display panel. (Example) Figure 5As shown, a circular bottomed hole 112 is formed on the upper end face of each protrusion 111. The depth of the bottomed hole 112 is less than the vertical length of the container body 11 of the microcentrifuge tube 10. The diameter of the bottomed hole 112 is slightly larger than the outer diameter (diameter) of the lower part of the container body 11. In addition, a plurality of slits 113 corresponding to the plurality of protrusions 111 are formed on the upper surface of the plate body 110. Each slit 113 is adjacent to the corresponding protrusion 111 in a first direction, has a predetermined depth, and extends along a second direction. The width of the slit 113 in the first direction is slightly larger than the thickness of the claw portion 12a of the microcentrifuge tube 10.

[0033] The lower part of the container body 11 contains microcentrifuge tubes 10 embedded in the bottom holes 112 of each protrusion 111. Furthermore, by bending the connecting member 13 of the microcentrifuge tube 10 outwards, the claw portion 12a of the microcentrifuge tube 10 is embedded into the slit 113 corresponding to the protrusion 111. Thus, multiple (24 in this example) microcentrifuge tubes 10 are held by the plate body 110 with the cap 12 not installed on the container body 11. The upper openings of the container body 11 of the multiple microcentrifuge tubes 10 held by the plate body 110 are at approximately the same height.

[0034] like Figure 4 As shown, the seal 120 has a generally rectangular shape that is substantially the same as the outer shape of the plate body 110. The seal 120 is essentially a consumable component, made of... Figure 1 The needle 210 is formed of a metal foil of a thickness that can be easily penetrated. In this example, the seal 120 is formed of aluminum having a thickness of, for example, about 10 μm. The seal 120 is disposed above the plate body 110 to cover the upper openings of the plurality of container bodies 11 held by the plate body 110.

[0035] The cushioning pad 130 has a generally rectangular shape that is substantially the same as the outer shape of the plate body 110. The thickness of the cushioning pad 130 is, for example, 5 mm or more. In this example, the cushioning pad 130 is formed of resin sponge, but the embodiment is not limited to this. The cushioning pad 130 may also be formed of an elastomer such as rubber. A plurality of circular through holes 131, each corresponding to a plurality of bottom holes 112 in the plate body 110, are formed on the cushioning pad 130. The diameter ratio of each through hole 131 is... Figure 1 The needle 210 has a large diameter. The diameter of each through hole 131 can be smaller than the diameter of the upper opening of the container body 11. The cushioning pad 130 is positioned above the seal 120.

[0036] The cover 140, for example, is formed of metal and includes a cover body 141 and a pair of arms 142. The cover body 141 has a generally rectangular shape that is substantially the same as the outer shape of the plate body 110. A plurality of circular through holes 143, each corresponding to a plurality of bottom holes 112 in the plate body 110, are formed on the cover body 141. The diameter ratio of each through hole 143 is... Figure 1 The diameter of needle 210 is large. The diameter of each through hole 143 can be approximately the same as the diameter of each through hole 131 of the cushioning pad 130.

[0037] A pair of arms 142 extend downward from both sides of the cover body 141 in a second direction. Two hook claws 144 arranged side-by-side in a first direction are provided at the lower part of each arm 142. The cover body 141 is positioned above the cushioning pad 130. The pair of arms 142 extend through the sides of the cushioning pad 130 and the seal 120 to the upper surface of the plate body 110. Multiple hook claws 144 of the pair of arms 142 are hooked into multiple hook holes (not shown) provided on the upper surface of the plate body 110.

[0038] According to the above configuration, with the sealing element 120 and the buffer pad 130 disposed between the plate body 110 and the cover body 141 of the cover 140, and the buffer pad 130 flattened, the cover 140 is mounted on the plate body 110. The compression amount of the buffer pad 130 can be, for example, 0.5 mm or more and 3 mm or less. In this case, the sealing element 120 is moderately pressed against the plurality of container bodies 11 by the buffer pad 130. Thus, the upper opening of the container body 11 can be properly sealed. In this example, the compression amount of the buffer pad 130 is about 1 mm.

[0039] 3. Cover

[0040] In this embodiment, the sealing member 120 and the buffer pad 130 are disposed between the plate body 110 and the cover body 141 while being held by the cover 140. Figure 6 This is a perspective view showing the lower part of the cover 140. Furthermore, in Figure 6 The image shows the seal 120, buffer pad 130, and cover 140 with their lower surfaces facing upwards.

[0041] like Figure 6 As shown, sidewall portions 145, which almost completely cover and protrude downwards by a predetermined distance, are formed on each side of the cover body 141. The length of each sidewall portion 145 in the vertical direction can be approximately the same as the thickness of the cushioning pad 130 in the unpressurized state. A retaining piece 146 protruding inwards is formed at the lower part of at least one sidewall portion 145. In this example, the retaining piece 146 is formed at the lower center of each of the two sidewall portions 145 parallel to the first direction and the one sidewall portion 145 parallel to the second direction.

[0042] A cushioning pad 130 and a sealing element 120 are sequentially embedded between the underside of the cover body 141 and one or more (three in this example) retaining pieces 146. That is, as Figure 6 As shown, firstly, a cushioning pad 130 is embedded between the cover body 141 and the retaining piece 146. Next, as... Figure 6 As indicated by the dashed arrow, a seal 120 is embedded between the buffer pad 130 and the retaining piece 146.

[0043] According to the above configuration, the seal 120 and the buffer pad 130 are integrally held by the cover 140. Therefore, by mounting the cover 140 onto the plate body 110, the seal 120 and the buffer pad 130 can be easily positioned between the plate body 110 and the cover body 141 of the cover 140 while the buffer pad 130 is flattened. Furthermore, in this example, cutouts are formed in one or more sidewall portions 145 to expose the side of the buffer pad 130 held by the cover 140. As a result, the buffer pad 130 can be easily removed from the cover 140 when replacing the buffer pad 130, etc.

[0044] Thus, the cover 140 further includes a retaining piece that holds the cushioning pad 130 and the seal 120 below the cover body 141. In this case, the cover 140, the cushioning pad 130, and the seal 120 can be integrated into one unit. This improves the ease of handling the test tube support plate 100.

[0045] 4. Effects

[0046] In the test tube support plate 100 of this embodiment, the microcentrifuge tube 10 is supported with the cap 12 not installed on the upper opening of the container body 11. Furthermore, the upper opening of the container body 11 is covered by the seal 120 while being compressed by the cushioning pad 130. When sampling a sample contained in the container body 11, the needle 210 of the sample injection device 200 is inserted into the container body 11 through the through-hole 143 formed by the cap body 141, penetrating the seal 120.

[0047] According to this configuration, the needle 210 does not penetrate the cap 12. Therefore, damage to the needle 210 is prevented. Furthermore, the microcentrifuge tube 10 is prevented from lifting when the needle 210 is withdrawn. Moreover, since the seal 120 suppresses sample evaporation, even when samples such as acids are contained in the container, corrosion of the sample injection device 200 due to sample evaporation is prevented. Furthermore, since the sample hardly evaporates during the waiting period for analysis, quantitative analysis of the sample can be performed with high reliability. These results enable the proper analysis of samples using the microcentrifuge tube 10. In addition, since the microcentrifuge tube 10 is inexpensive, the cost of analysis can be reduced.

[0048] A through-hole 131 corresponding to the container body 11 is formed on the buffer pad 130. In this case, the sample will not adhere to the buffer pad 130 when the needle 210 is pulled out. As a result, the replacement frequency of the buffer pad 130 can be reduced. In addition, the seal 120 is made of disposable metal foil. In this case, cross-contamination of samples generated through the seal 120 can be prevented by periodically replacing the seal 120.

[0049] The diameter of the through-hole 131 of the cushioning pad 130 is smaller than the diameter of the upper opening of the container body 11. Furthermore, with the cover 140 installed on the plate body, the compression of the cushioning pad 130 is 0.5 mm or more and 3 mm or less. In these cases, the container body 11 is more firmly compressed via the seal 120 through the cushioning pad 130. Furthermore, when the cushioning pad 130 is formed of resin sponge, the container body 11 is compressed more evenly via the seal 120 through the cushioning pad 130. Therefore, the container body 11 can be supported more stably.

[0050] A bottomed hole 112 is formed on the protrusion 111 on the upper surface of the plate body 110 for inserting the container body 11. In this case, the plate body 110 can easily hold the container body 11. In addition, a slit 113 for inserting the claw portion 12a of the cap portion 12 is formed on the upper surface of the plate body 110, adjacent to the bottomed hole 112. Thus, the plate body 110 can easily hold the microcentrifuge tube 10 with the cap portion 12 not installed in the upper opening of the container body 11.

[0051] 5. Other implementation methods

[0052] (1) In the above embodiment, the diameter of the through hole 131 of the buffer pad 130 is smaller than the diameter of the upper opening of the container body 11, but the embodiment is not limited to this. The diameter of the through hole 131 of the buffer pad 130 may be equal to or greater than the diameter of the upper opening of the container body 11. Furthermore, if the buffer pad 130 is replaced in a short period of time, the buffer pad 130 may not have a through hole 131.

[0053] (2) In the above embodiment, when the cover 140 is installed on the plate body 110, the compression amount of the buffer pad 130 is 0.5 mm or more and 3 mm or less, but the embodiment is not limited to this. In the same state, the compression amount of the buffer pad 130 can be less than 0.5 mm or greater than 3 mm.

[0054] (3) In the above embodiment, the cushioning pad 130 and the seal 120 are held by the cover 140, but the embodiment is not limited to this. It is also possible that only the cushioning pad 130 is held by the cover 140, while the seal 120 is not held by the cover 140. Alternatively, neither the cushioning pad 130 nor the seal 120 may be held by the cover 140. In this case, no retaining piece 146 is formed on the cover 140.

[0055] (4) In the above embodiment, a protrusion 111 is formed on the upper surface of the plate body 110, but the embodiment is not limited to this. If the plate body 110 has sufficient thickness, the protrusion 111 may not be formed on the upper surface of the plate body 110. In this case, a bottom hole 112 is formed on the upper surface of the plate body 110. Alternatively, a through hole may be formed on the plate body 110 instead of a bottom hole 112.

[0056] (5) In the above embodiment, a slit 113 is formed on the plate body 110, but the embodiment is not limited to this. As long as the plate body 110 can hold the microcentrifuge tube 10 when the cover 12 is not installed on the container body 11, the plate body 110 may not have a slit 113 formed.

[0057] (6) In the above embodiment, the test tube support plate 100 includes a seal 120, but the embodiment is not limited to this. The seal 120 is a disposable consumable and is sometimes distributed separately for replacement. Therefore, the test tube support plate 100 may also be distributed as a product that does not include the seal 120 but includes the plate body 110, the cushioning pad 130, and the cover 140. In this case, the user who obtains the test tube support plate 100 including the plate body 110, the cushioning pad 130, and the cover 140 will place the separately obtained seal 120 under the cushioning pad 130 to use the test tube support plate 100.

[0058] (7) In the above embodiment, the test tube support plate 100 includes a buffer pad 130, but the embodiment is not limited thereto. If the seal 120 is elastic, the test tube support plate 100 may not include the buffer pad 130.

[0059] 6. Example

[0060] Those skilled in the art should understand that the above-described exemplary embodiments are specific examples of the following patterns.

[0061] (Item 1) One embodiment relates to a test tube support plate that is,

[0062] A test tube support plate for supporting microcentrifuge tubes whose container body and cap are integrally formed, comprising:

[0063] The plate body holds the microcentrifuge tube in the state where the cover is not installed in the upper opening of the container body;

[0064] A seal disposed above the container body of the microcentrifuge tube, which is held by the plate body; and

[0065] A cover having a first through hole corresponding to the container body and positioned above the seal.

[0066] In this test tube support plate, the microcentrifuge tubes are supported with the cap not installed at the upper opening of the container body. Furthermore, the upper opening of the container body is covered by a seal. When sampling a sample contained within the container body, the injection needle is inserted into the container body through the first through-hole formed by the cap body, penetrating the seal.

[0067] According to this configuration, the injection needle does not penetrate the cap. Therefore, damage to the injection needle is prevented. Furthermore, it prevents the microcentrifuge tube from lifting when the injection needle is withdrawn. Moreover, since the seal suppresses sample evaporation, even when the container contains samples such as acids, it prevents the sample injection device from corroding due to sample evaporation. In addition, since the sample hardly evaporates during the waiting period for analysis, quantitative analysis of the sample can be performed with high reliability. These results enable the proper analysis of samples using microcentrifuge tubes.

[0068] (Item 2) The test tube support plate described in Item 2,

[0069] It further includes a buffer pad disposed between the seal and the cover.

[0070] The cushioning pad can be installed on the main body of the plate while being flattened by the cover.

[0071] In this case, the upper opening of the container body is covered by a seal while being compressed by the cushioning pad. This effectively seals the upper opening of the container body.

[0072] (Item 3) The test tube support plate as described in Item 2,

[0073] A second through hole corresponding to the container body can be formed on the buffer pad.

[0074] In this configuration, the sample will not adhere to the buffer pad when the injection needle is withdrawn. This reduces the frequency of buffer pad replacement.

[0075] (Item 4) The test tube support plate as described in Item 3,

[0076] The diameter of the second through hole in the buffer pad may be smaller than the diameter of the upper opening of the container body.

[0077] In this configuration, the container body is more firmly compressed via the seal and cushioning pads. This provides more stable support for the container body.

[0078] (Item 5) The test tube support plate according to any one of items 2 to 4,

[0079] When the cover is installed on the main body of the plate, the compression of the buffer pad can be more than 0.5 mm and less than 3 mm.

[0080] In this configuration, the container body is more firmly compressed via the seal and cushioning pads. This provides more stable support for the container body.

[0081] (Item 6) The test tube support plate according to any one of items 2 to 5,

[0082] The cover further comprises:

[0083] A cover body having the first through hole; and

[0084] A retaining piece is provided below the cover body and holds the cushioning pad below the cover body.

[0085] In this case, the cover and cushioning pad can be integrated into one unit. This improves the ease of handling the test tube support plate.

[0086] (Item 7) The test tube support plate as described in Item 6,

[0087] The retaining piece can also hold the seal below the buffer pad.

[0088] In this case, in addition to the cover and cushioning pad, the sealing components can be further integrated. This further improves the ease of handling the test tube support plate.

[0089] (Item 8) The test tube support plate according to any one of items 1 to 7,

[0090] An opening may be formed on the plate body for the container body to be inserted.

[0091] In this configuration, the plate body can easily hold the container body in place.

[0092] (Item 9) The test tube support plate as described in Item 8,

[0093] A claw portion is formed in the cover portion.

[0094] Furthermore, a slit may be formed on the plate body adjacent to the opening for the claw portion of the cover to be inserted.

[0095] In this configuration, the plate body can easily hold the microcentrifuge tubes even when the cap is not installed at the opening on the top of the container body.

[0096] (Item 10) The test tube support plate according to any one of items 2 to 9,

[0097] The cushioning pad can be formed from resin sponge.

[0098] In this configuration, the container body is compressed more evenly through the cushioning pads and seals. This provides more stable support for the container body.

[0099] (Item 11) A test tube support plate according to any one of items 1 to 10,

[0100] The sealing element can be made of disposable metal foil.

[0101] In this case, cross-contamination of samples generated through the seals can be prevented by regularly replacing the seals.

[0102] (Item 12) Another embodiment involves a test tube support plate that is,

[0103] Test tube support plate for using a seal to support microcentrifuge tubes whose container body and cap are integrally formed.

[0104] have:

[0105] A plate body that holds the microcentrifuge tube with the cap not installed at the upper opening of the container body; and

[0106] A cover having a first through hole corresponding to the container body and positioned above the seal.

[0107] In this test tube support plate, the injection needle does not penetrate the cap. Therefore, it prevents the injection needle from deteriorating or bending. Furthermore, it prevents the microcentrifuge tube from lifting when the injection needle is withdrawn. Moreover, since the seal suppresses sample volatilization, it prevents the sample injection device from corroding due to sample volatilization, even when the container contains samples such as acids. In addition, because the sample hardly volatilizes during the waiting period for analysis, quantitative analysis of the sample can be performed with high reliability. These results enable the proper use of microcentrifuge tubes for sample analysis.

[0108] (Item 13) A further embodiment of the sample injection device includes:

[0109] The test tube support plate as described in any one of items 1 to 12; and

[0110] The injection needle is inserted into the container body of the microcentrifuge tube through the first through hole formed on the cap of the test tube support plate.

[0111] Because of the aforementioned test tube support plate, the sample injection device allows for appropriate analysis of samples using microcentrifuge tubes.

Claims

1. A test tube support plate for supporting microcentrifuge tubes whose container body and cap are integrally formed, characterized in that, have: The plate body holds the microcentrifuge tube in the state where the cover is not installed in the upper opening of the container body; A seal is disposed above the container body of the microcentrifuge tube, which is held by the plate body; as well as A cover having a first through hole corresponding to the container body and positioned above the seal.

2. The test tube support plate according to claim 1, characterized in that, It further includes a buffer pad disposed between the seal and the cover, and The cushioning pad is installed on the main body of the plate in a flattened state by the cover.

3. The test tube support plate according to claim 2, characterized in that, A second through hole corresponding to the container body is formed on the buffer pad.

4. The test tube support plate according to claim 3, characterized in that, The diameter of the second through hole in the buffer pad is smaller than the diameter of the upper opening of the container body.

5. The test tube support plate according to any one of claims 2 to 4, characterized in that, With the cover installed on the main body of the plate, the compression of the buffer pad is 0.5 mm or more and 3 mm or less.

6. The test tube support plate according to any one of claims 2 to 4, characterized in that, The cover further has: A cover body having the first through hole; and A retaining piece is provided below the cover body and holds the cushioning pad below the cover body.

7. The test tube support plate according to claim 6, characterized in that, The retaining piece further holds the seal below the cushioning pad.

8. The test tube support plate according to any one of claims 1 to 4, characterized in that, An opening is formed on the plate body for the container body to be inserted.

9. The test tube support plate according to claim 8, characterized in that, A claw portion is formed on the cover portion, and A slit is further formed on the plate body, adjacent to the opening, for the claw portion of the cover to be inserted.

10. The test tube support plate according to any one of claims 2 to 4, characterized in that, The cushioning pad is formed of resin sponge.

11. The test tube support plate according to any one of claims 1 to 4, characterized in that, The seal is made of disposable metal foil.

12. A test tube support plate for using a sealing element to support a microcentrifuge tube integrally formed with a container body and a cap, characterized in that, have: A plate body that holds the microcentrifuge tube with the cap not installed at the upper opening of the container body; and A cover having a first through hole corresponding to the container body and positioned above the seal.

13. A sample injection device, comprising: The test tube support plate according to any one of claims 1, 2, 3, 4 and 12; and The injection needle is inserted into the container body of the microcentrifuge tube through the first through hole formed on the cap of the test tube support plate.

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