Blood coagulation testing equipment

Abstract

To provide a blood coagulation testing device that reduces the number of accessory devices that need to be connected, has a small installation area, and is easy to transport and handle. [Solution] The blood coagulation testing device comprises a testing unit 1 that tests blood coagulation ability, a display unit 3 that displays the operating status of the testing unit 1, and a housing 5 in which the testing unit 1 and display unit 3 are incorporated, and is provided on the front part of the device with the display unit 3 located at the top rear and the testing unit 1 located at the bottom front, and the housing 5 has left and right side frames 15 that support the left and right sides of the display unit 3 and the testing unit 1, respectively, and the left and right side frames 15 each have a display support part 15A that supports the display unit 3 and a testing support part 15B that supports the testing unit 1 that are integrally provided in a continuous manner.

Description

[Technical Field]

[0001] The present invention relates to a blood coagulation testing apparatus for testing blood coagulation ability. [Background technology]

[0002] Patent Document 1 describes a method for testing platelet function, which tests platelet function by observing or measuring the behavior of blood in a capillary. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2010 / 018833 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-090293 Summary of the Invention [Problem to be solved by the invention]

[0004] A blood coagulation testing device that performs the platelet function testing method described in Patent Document 1 has been realized. For example, the conventional testing device described in Patent Document 2 requires connection to many accessory devices, such as a control personal computer, a display device, a mouse, and a keyboard, making installation complicated and requiring a relatively large installation area. Furthermore, if the sample is scattered by operating the accessory devices during testing, the area of ​​scattering may become large. Furthermore, the operator's field of view moves when operating the accessory devices, which may reduce the efficiency of operation.

[0005] An object of the present invention is to realize a blood coagulation testing apparatus that reduces the number of accessory devices that need to be connected, has a small installation area, and is easy to transport and handle. [Means for solving the problem]

[0006] A characteristic configuration of the blood coagulation test apparatus according to the present invention is a blood coagulation test apparatus comprising: a test unit that tests blood coagulation ability; and a display unit that displays the operating state of the test unit; the test unit comprises a sample container that contains a sample, which is the blood to be tested, and a measurement tip to which one end of the sample container is attached; and the blood coagulation test apparatus is configured to test blood coagulation ability based on fluctuations in pressure within the measurement tip while liquid is being supplied to the sample container; the blood coagulation test apparatus comprises a housing in which the test unit and the display unit are incorporated, and is provided on the front part of the apparatus with the display unit located at the upper rear side and the test unit located at the lower front side; the housing comprises left and right side frames that support the left and right sides of the display unit and the test unit, respectively; and the left and right side frames each have a display support part that supports the display unit and a test support part that supports the test unit that are integrally provided in a continuous manner.

[0007] According to the present invention, the testing unit and display unit are integrally supported by the housing, eliminating the need to connect an accessory device for displaying the operating status of the testing unit and reducing the installation area. Furthermore, since the display unit is located at the upper rear and the testing unit is located at the lower front, the operator can perform various testing operations using the testing unit at the front while checking the display on the display unit located at the front. This eliminates the need to carry the sample to a distant location, reduces the area where the sample may scatter, and minimizes movement of the field of view during operation. This results in an easy-to-use device. Furthermore, the testing unit and display unit are firmly supported by side frames integrally formed with the display support and testing support, and are incorporated into the housing. This results in a compact, robust, and easy-to-transport device.

[0008] Therefore, it has become possible to provide a blood coagulation testing apparatus that requires fewer accessory devices to be connected, has a small installation area, and is easy to transport and handle.

[0009] In the present invention, a storage tank for storing the liquid and a liquid transfer pump for pressure-transferring the liquid from the storage tank to the sample container through a supply pipe are provided, and it is preferable that the storage tank and the liquid transfer pump are arranged side by side, one above the other, behind the display unit, with the storage tank located on the upper side and the liquid transfer pump located on the lower side.

[0010] According to this configuration, the empty space behind the display unit within the housing can be effectively utilized to house the storage tank and the liquid feed pump in a compact manner.

[0011] In the present invention, the testing unit comprises a nozzle that is provided at the end of the supply pipe extending from the liquid transfer pump and to which the other end of the specimen container can be attached, a measurement tip attachment section to which the measurement tip is attached, a holding section that holds the nozzle in a standby state in a non-testing state, and a waste liquid section that discards the liquid remaining in the nozzle when the specimen container is removed after the test is completed, and it is preferable that the supply pipe be configured to be able to move between a state in which it is pulled outward and a state in which it is retracted inward so that in the testing state, the specimen container attached to the nozzle can be attached to the measurement tip, and after the test is completed, the nozzle can be returned to the holding section.

[0012] According to this configuration, when a test is performed, the supply pipe is pulled out and the nozzle is removed from the holder while the measurement tip is attached to the measurement tip attachment section. Then, the sample container attached to the nozzle is attached to the measurement tip and the test is performed. After the test is completed, the sample container is removed from the nozzle, the liquid remaining in the nozzle is discarded in the waste liquid section, and the nozzle is returned to the holder. At this time, the supply pipe retracts inward, allowing for compact storage without protruding outward.

[0013] In the present invention, it is preferable that a side wall portion of the housing is provided with a return mechanism that biases the supply pipe back so as to reduce the amount of outward pulling out.

[0014] According to this configuration, the supply pipe is automatically retracted inward by the biasing force of the return mechanism, so that the supply pipe can be stored without any hassle.

[0015] In the present invention, it is preferable that the return mechanism is configured such that a weight attached to the middle portion of the supply pipe is supported slidably along an inclined rail provided on the side wall portion, and is biased back by the weight of the weight itself.

[0016] According to this configuration, the weight itself is used to bias the return, which is a simple configuration, and the return operation can be performed smoothly with less shock than when a spring or the like is used. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is an overall perspective view of a blood coagulation testing device. [Figure 2] FIG. 2 is a side view showing the frame structure of the housing. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2. [Figure 5] FIG. 10 is a side view showing the arrangement of the supply pipes. [Figure 6] FIG. 10 is a diagram showing the attached state of the measuring chip. [Figure 7] FIG. 2 is a plan view of the inspection unit. [Figure 8] FIG. 10 is a diagram showing the attached state of the sample container. [Figure 9] FIG. 1 is a diagram showing the state of blood supply. [Figure 10] FIG. 10 is a diagram showing the attached state of the measuring chip. [Figure 11] FIG. 10 is a diagram showing a pressure change state. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of a blood coagulation testing apparatus according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiment, and various modifications are possible without departing from the spirit and scope of the present invention.

[0019] In the following explanation, unless otherwise specified, the direction of arrow F in the figure is "forward," the direction of arrow B is "backward," the direction of arrow L is "left," and the direction of arrow R is "right." The direction of arrow U in the figure is "upward," and the direction of arrow D is "downward."

[0020] [Overall structure] Figure 1 shows a blood coagulation test apparatus according to the present invention. This blood coagulation test apparatus tests the blood coagulation ability of blood, which is the test subject, and is equipped with a test unit 1 that tests the blood coagulation ability of the blood sample, which is the test subject, when the sample is set. It is also equipped with a display unit 3 that has a touch panel type display monitor 2 that displays the operating status of this test unit 1.

[0021] When not in use, the inspection unit 1 is covered by an inspection section cover 4 to prevent dust and other particles from adhering to the inspection unit 1. When an inspection is to be carried out, the inspection section cover 4 is removed and the work is carried out with the top open.

[0022] This blood coagulation test apparatus includes a housing 5 incorporating the test unit 1 and display unit 3, and is provided on the front side of the apparatus with the display unit 3 located at the top rear and the test unit 1 located at the bottom front. Because the test unit 1 and display unit 3 are integrally supported by the housing in this manner, there is no need to connect accessory devices that display the operating status of the test unit, allowing for a smaller installation area. Furthermore, harnesses and outlets for supplying power to the accessory devices are also unnecessary. Furthermore, because the display unit 3 and test unit 1 are provided on the front side of the apparatus, the operator can perform operations to instruct the execution of test tasks and various operations while checking the contents displayed by the display unit 3 from the front side of the apparatus, making work easier.

[0023] 2 and 4, the device is provided with an oil tank 6 as a storage tank for storing mineral oil, and a liquid feed pump 9 that pressure-feeds the mineral oil from the oil tank 6 to the nozzle 27 through a supply pipe 7. The oil tank 6 and the liquid feed pump 9 are arranged vertically behind the display unit 3, with the oil tank 6 located on the upper side and the liquid feed pump 9 located on the lower side.

[0024] The oil tank 6 stores mineral oil and is detachably supported so that it can be replenished when the mineral oil is consumed and the remaining amount becomes low. The liquid feed pump 9 is driven by a motor 10 provided at the bottom, and as shown in Figure 5, it sucks mineral oil from a suction part 11 and discharges the mineral oil to the outside from a discharge part 12.

[0025] The oil tank 6 is provided on the left rear side of the display unit 3. On the left rear side of the display unit 3, a printer 13 is provided to print out measurement data and the like.

[0026] The housing 5 is configured to support the above-mentioned devices in an integrated state. As shown in Figures 2 to 4, the lower part of the housing 5 is provided with base frames 14 on both the left and right sides in a vertical position that supports the entire device. Left and right side frames 15 are provided in a state connected to the upper parts of the left and right base frames 14. The left side frame 15 supports the left side of the display unit 3 and the inspection unit 1, and the right side frame 15 supports the right side of the display unit 3 and the inspection unit 1.

[0027] A back frame 16, which is frame-shaped when viewed from behind, is provided on the rear side of the base frame 14, and an upper frame 17, which supports the oil tank 6 and printer 13, is provided on top of the back frame 16. The oil tank 6 is removably mounted and supported on the upper frame 17. An upper cover 18 (see Figure 1) is provided to cover the top of the inspection device, with the oil tank 6 and printer 13 exposed to the outside. The upper cover 18 is connected and fixed to the upper frame 17 and the left and right side frames 15.

[0028] Each of the left and right side frames 15 has a display support part 15A that supports the display unit 3 and an inspection support part 15B that supports the inspection unit 1, which are integrally provided in a state in which they are continuously connected in a substantially L-shape in a side view. The upper parts of the left and right side frames 15 are connected to the upper frame 17 via connecting brackets 19.

[0029] A front cover 20 is provided on the upper rear side of the inspection unit 1, extending across the entire width in the left-right direction and vertically extending from the top end of the device to the inspection unit 1. The front cover 20 is connected to the left and right display support parts 15A on both the left and right sides, and its upper end is supported by the upper frame 17. The front cover 20 holds the display unit 3 and surrounds the periphery of the display unit 3. The front cover 20 covers the front side between the display unit 3 and the inspection unit 1. Therefore, the display unit 3 is supported by the left and right display support parts 15A, i.e., the left and right side frames 15, via the front cover 20.

[0030] The inspection unit 1 extends across the entire width in the left-right direction, and is supported by inspection support portions 15B of the left and right side frames 15.

[0031] Both the left and right sides of the housing 5 are closed and completely covered by side covers 21. The rear side of the housing 5 is closed and completely covered by a back cover 22 (see FIG. 5). As shown in FIG. 1, the lower front part of the inspection unit 1 is covered by a front cover 23. This front part is provided with a power switch 24 and a first external connection terminal 25 for outputting inspection results (described later) to an external device (e.g., a storage device) according to the USB (Universal Serial Bus) standard. Although not shown, the bottom side is also closed by a bottom cover.

[0032] Therefore, the housing 5 has a strong support structure formed by connecting left and right base frames 14, left and right side frames 15, a back frame 16, and an upper frame 17, and the entire outer periphery is covered by a cover, making the entire device an integrated configuration. As shown in Fig. 4, the back surface is provided with a main power switch 42, a power supply socket 43, a second external connection terminal 44 for connecting to an external device (such as a barcode reader described later) according to the USB standard, and a third external connection terminal 45 for communicating with an external device via a LAN (Local Area Network).

[0033] [Inspection unit] The inspection unit 1 will now be described. The testing unit 1 comprises a sample container 8 that contains the sample, which is blood to be tested, and a measurement tip 26 to which one end of the sample container 8 is attached, and is configured to test blood coagulation ability based on fluctuations in pressure within the measurement tip 26 when mineral oil, an example of a liquid, is supplied to the sample container 8.

[0034] As shown in Figure 7, the testing unit 1 is equipped with a nozzle 27 that is provided at the end of a supply pipe 7 extending from a liquid transfer pump 9 and to which the other end of a sample container 8 can be attached, a measurement tip attachment section 28 to which a measurement tip 26 is attached, a holding section 29 that holds the nozzle 27 in a standby state when not in testing, a waste liquid section 30 that discards mineral oil remaining in the nozzle 27 when the sample container 8 is removed after testing is completed, and a leak condition testing section 31.

[0035] The nozzle 27, measuring tip mounting section 28, holding section 29, waste liquid section 30, and leak state inspection section 31 are provided in pairs on each of the left and right sides, and each is provided with two measurement systems (channel 1, channel 2) that can perform measurements independently. Similarly, two liquid transfer pumps 9 are provided corresponding to the two measurement systems.

[0036] By operating the liquid feed pump 9, the mineral oil stored in the oil tank 6 can be pressure-fed through the supply pipe 7 to the nozzle 27. In the non-inspection state, the nozzle 27 is held by the holder 29 and is in a standby state.

[0037] When performing a test, first, the other end of the specimen container 8 is attached to the nozzle 27 as shown in Figure 8. Then, as shown in Figure 9, blood (specimen) to be tested is supplied from one end to the specimen container 8. At this time, the specimen container 8 is filled with blood using the lid to prevent air bubbles from mixing in with the blood.

[0038] 6 and 7, the measuring tip 26 is attached in advance to the measuring tip attachment part 28. The measuring tip attachment part 28 is provided with a detection sensor 32 that detects whether the measuring tip 26 is attached in the correct position, and a heater 33 that heats the attached measuring tip 26 to a temperature similar to body temperature.

[0039] After heating, one end of the specimen container 8 attached to the nozzle 27 is inserted into the measuring chip 26 attached to the measuring chip attachment part 28. The measuring chip 26 is provided with a microchannel simulating a blood vessel, and when pressurized blood passes through the microchannel, there is flow resistance, resulting in an increase in inflow pressure. The way this pressure fluctuates differs depending on the blood coagulation ability, and this allows the coagulation ability to be tested.

[0040] The supply pipe 7 is configured so that it can be manually pulled outward by an operator so that the nozzle 27 can be attached to the measuring tip 26, and can be returned to the holder 29. That is, in the testing state, the supply pipe 7 allows the specimen container 8 attached to the nozzle 27 to be attached to the measuring tip 26, and after the testing is completed, the supply pipe 7 is configured to be movable between a state in which it is pulled outward and a state in which it is retracted inward so that the nozzle 27 can be returned to the holder 29.

[0041] 5, the supply pipes 7 include a first supply pipe 7A that sends mineral oil from the oil tank 6 to the suction portion 11 of the liquid feed pump 9, and a second supply pipe 7B that sends mineral oil discharged from the discharge portion 12 of the liquid feed pump 9 to the nozzle 27. The two first supply pipes 7A pass through insertion holes formed in the upper frame 17 from the oil tank 6 and extend to the suction portions 11 of the two liquid feed pumps 9 lined up on the left and right.

[0042] The second supply pipe 7B extends in a serpentine manner from the discharge portion 12 of the liquid feed pump 9 to a side portion of the base frame 14. A return mechanism 34 is provided at a side portion of the base frame 14 serving as a side wall of the housing 5, which biases the supply pipe 7 (second supply pipe 7B) in a returning direction so as to reduce the amount of the supply pipe pulled outward. The return mechanism 34 is configured such that a weight 35 attached to the middle portion of the supply pipe 7 (second supply pipe 7B) is supported slidably along an inclined rail 36 provided at a side portion of the base frame 14, and biases the supply pipe 7 in a returning direction by the weight of the weight 35.

[0043] When the operator manually pulls the supply pipe 7 outward, the nozzle 27 can be pulled outward against the weight of the weight 35, and when the nozzle 27 is returned to the holding part 29 after the inspection is completed, the supply pipe 7 is pulled inward by the biasing force of the weight of the weight 35, and is held by the holding part 29 and returns to a standby state.

[0044] After testing is completed, mineral oil remaining inside the nozzle 27 is discharged into the waste liquid section 30, and the discharged mineral oil is stored in the waste liquid tank 37. Below the waste liquid section 30, a receiving tray 38 is provided to receive mineral oil spilled from the waste liquid tank 37. The receiving tray 38 is configured to be able to be pulled outward and forward from the front of the device, allowing the accumulated mineral oil to be disposed of.

[0045] The leak state inspection unit 31 is used to inspect whether or not a leak has occurred along the route of the supply pipe 7. With the nozzle 27 inserted into the leak state inspection unit 31, the liquid feed pump 9 is operated, and a leak can be determined from the inspection state of a pressure sensor 39, which will be described later.

[0046] [Display unit] The display unit 3 will now be described. The display unit 3 is equipped with a touch panel type display monitor 2 with a liquid crystal display that can input various types of information and display various types of information required for the inspection. The display monitor 2 can display various types of information and also allows the operator to input instruction information by touching it.

[0047] 2 and 5, a control device 40 is provided on the back side of the display monitor 2, which controls the operation of the display monitor 2 and also controls the operation of the inspection unit 1. The control device 40 is equipped with, for example, a microcomputer, and is configured to be able to execute various control processes according to a control program. That is, the control device 40 controls the operation of the display monitor 2 and the inspection unit 1 so as to execute the commanded operation according to the content of the command input by touch operation on the display monitor 2.

[0048] A pressure sensor 39 is provided near the liquid transfer pump 9 to detect the pressure of the mineral oil inside the second supply pipe 7B in the measurement state in which the mineral oil is pressure-fed through the second supply pipe 7B to the sample container 8. This detected pressure corresponds to the inflow pressure of the mineral oil as it is fed towards the measurement tip 26 via the sample container 8.

[0049] As shown in FIG. 1, an indicator light 41 that displays the operating status of the inspection device is provided in the center of the left and right sides of the upper part of the display monitor 2. The indicator light 41 is configured to light up in different colors or different display forms depending on the operating status, making it possible to distinguish between different operating statuses. For example, it can operate as follows: When in a standby state where no measurement is being performed, the light is turned off; when measurement is being performed, the light is turned green; and when measurement is completed, the light is turned orange. When an operating error occurs, the light flashes red. However, the display form is not limited to the above and can be changed as appropriate.

[0050] [Inspection procedure] The procedure for carrying out the inspection in conjunction with the control operation of the control device 40 will be briefly described below. First, when performing a test, the operator checks the identification number of the blood to be tested and inputs the identification information by operating the input operation target portion of the display monitor 2. Instead of manual input, for example, the barcode attached to the measurement tip 26 can be recognized and input using a barcode reader (not shown). At this time, which channel of the two-channel operating system to use is also input.

[0051] When the identification information is input, the display monitor 2 displays a message urging the user to attach the measuring tip 26 to the measuring tip attachment section 28 (FIG. 6). At this time, the indicator light 41 lights up in green. Next, when the detection sensor 32 detects that the measuring tip 26 has been properly attached, the heater 33 is activated.

[0052] When heating is complete, a message is displayed on the display monitor 2 prompting the operator to attach the specimen container 8 to the nozzle 27 (Figure 8). Next, a message is displayed prompting the operator to inject the blood sample into the specimen container 8 (Figure 9). Next, the operator is prompted to attach the specimen container 8 to the measuring tip 26 attached to the measuring tip attachment section 28 (Figure 10). The operator removes the nozzle 27 from the holder 29, pulls out the second supply pipe 7B, and inserts one end of the specimen container 8 attached to the nozzle 27 into a predetermined position on the measuring tip 26 to attach it. Next, a command to start measurement is issued on the display monitor 2.

[0053] When a command to start measurement is issued, the liquid feed pump 9 starts to feed mineral oil. Then, for example, as shown in Fig. 11, the change in the detected value of the pressure sensor 39 over time is measured. Based on this measurement result, the blood coagulation ability of the blood being tested can be tested.

[0054] When the test is complete, this is displayed on the display monitor 2 and the indicator light 41 lights up orange. The test results are displayed on the display monitor 2. The test results can also be printed out using the printer 13. After the test is complete, the specimen container 8 is detached from the measuring tip 26, and the measuring tip 26 is removed from the measuring tip attachment portion 28. The removed specimen container 8 and measuring tip 26 are discarded. After the process is complete, the indicator light 41 goes out.

[0055] [Another embodiment] (1) In the above embodiment, the oil tank 6 and the liquid transfer pump 9 are arranged vertically side by side, but instead of this configuration, they may be arranged horizontally or vertically.

[0056] (2) In the above embodiment, mineral oil is used as the liquid. However, instead of this, physiological saline or other liquids having a lower specific gravity than blood may be used.

[0057] (3) In the above embodiment, the device is configured to include a waste liquid section 30 for disposing of the liquid (mineral oil) remaining in the nozzle 27 after the test is completed. However, the testing device may be configured without the waste liquid section 30 by providing a separate waste disposal area.

[0058] (4) In the above embodiment, the return mechanism for biasing the supply pipe 7 (second supply pipe 7B) back is configured such that the weight 35 attached to the middle of the second supply pipe 7B is supported slidably along the inclined rail 36 and the weight of the weight 35 biases the supply pipe 7 back. However, instead of this configuration, a configuration may be used in which a spring such as a tension spring or a torsion spring is used to bias the supply pipe 7 (second supply pipe 7B) back. The supply pipe 7 (second supply pipe 7B) may be manually retracted without using such a return mechanism.

[0059] (5) In the above embodiment, the supply pipe 7 (second supply pipe 7B) is configured to be able to move between a state in which it is pulled outward and a state in which it is retracted inward. However, this configuration is not limited to this, and the configuration may also be such that it has an operating mechanism that can switch between a state in which the specimen container 8 is connected to the measurement tip 26 and a state in which it is separated from the measurement tip 26 without moving the supply pipe 7 outward or inward.

[0060] (6) In the above embodiment, the inspection unit 1 is provided with a two-channel operating system, but it may be provided with only one channel, or with an operating system of three or more channels.

[0061] (7) In the above embodiment, the display unit 3 is configured to have a touch panel display monitor. However, instead of this configuration, it may be configured to have a separate display device that only displays information and an input device such as a keyboard that can be used for input operations. [Industrial Applicability]

[0062] The present invention can be applied to a blood coagulation testing device for testing blood coagulation ability. [Explanation of symbols]

[0063] 1 Inspection unit 3 Display Unit 5. Cabinet 6 Oil tank (storage tank) 7 Supply Pipe 8. Sample container 9 Liquid transfer pump 15 Side frame 26 Measuring Tip 27 nozzles 28 Measurement tip attachment part 29 Holding part 30 Waste liquid section 34 Return mechanism 35 weight 36 Inclined Rail

Claims

1. a test unit for testing blood coagulation ability, and a display unit for displaying the operating state of the test unit; The testing unit is a blood coagulation testing device that includes a sample container that contains a sample, which is blood to be tested, and a measurement tip to which one end of the sample container is attached, and is configured to test blood coagulation ability based on pressure fluctuations in the measurement tip while liquid is being supplied to the sample container, a housing in which the inspection unit and the display unit are incorporated, the display unit is located at the top rear side and the inspection unit is located at the bottom front side of the device, the housing includes left and right side frames that support the left and right sides of the display unit and the inspection unit, respectively; A blood coagulation testing device in which the left and right side frames each have a display support part that supports the display unit and a testing support part that supports the testing unit, which are integrally provided in a continuous state.

2. a storage tank for storing the liquid; and a liquid transfer pump for pressure-transferring the liquid from the storage tank to the specimen container through a supply pipe, 2. The blood coagulation testing apparatus according to claim 1, wherein the storage tank and the liquid feed pump are arranged vertically side by side behind the display unit, with the storage tank located on the upper side and the liquid feed pump located on the lower side.

3. The inspection unit includes: a nozzle provided at an end of the supply pipe extending from the liquid feed pump and to which the other end of the sample container can be attached; a measuring chip mounting portion to which the measuring chip is mounted; a holding unit that holds the nozzle in a standby state in a non-inspection state; a waste liquid section that discards the liquid remaining in the nozzle after the specimen container is removed after the test is completed, 3. The blood coagulation testing apparatus according to claim 2, wherein the supply pipe is movable between a state in which it is pulled outward and a state in which it is retracted inward so that, in a testing state, the specimen container attached to the nozzle can be attached to the measurement tip, and after the testing is completed, the nozzle can be returned to the holder.

4. 4. The blood coagulation test apparatus according to claim 3, wherein a side wall of the housing is provided with a return mechanism that biases the supply pipe back so as to reduce the amount of outward pulling out.

5. 5. The blood coagulation testing apparatus according to claim 4, wherein the return mechanism is configured such that a weight attached to an intermediate portion of the supply pipe is supported slidably along an inclined rail provided on the side wall portion, and is biased back by the weight of the weight.

Images