Signal switching device for a sample analyzer

Abstract

The invention relates to a signal switching device for a sample analyzer. The sample analyzer comprises an optical experiment table and a sample detection module, and the signal switching device can switch an optical signal emitted from the optical experiment table between the sample detection module and other equipment independent of the sample analyzer.

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202411010757.9 (22) Application Date 2024.07.26 (71) Applicant Beckman Coulter Biotechnology (Suzhou) Co., Ltd. Address 215123, Building 4, Suzhou Bio-industry Park, No. 218 Sangtian Street, Suzhou Industrial Park, Suzhou City, Jiangsu Province (72) Inventors Lv Xiao, Liu Xi, Zhang Lu (74) Patent Agency Beijing J&J Intellectual Property Agency Co., Ltd. 11227 Patent Attorney Duan Jimei (51) Int.Cl. G01N 21 / 25 (2006.01) G01N 21 / 01 (2006.01) G01N 15 / 1434 (2024.01) G02B 6 / 35 (2006.01) (54) Invention Title: Signal Switching Device for Sample Analyzer (57) Abstract: This disclosure relates to a signal switching device for a sample analyzer. The sample analyzer includes an optical experimental stage and a sample detection module, and the signal switching device is capable of switching an optical signal emitted from the optical experimental stage between the sample detection module and other devices independent of the sample analyzer. Claims: 2 pages Description: 6 pages Drawings: 11 pages CN 121409882 A 2026.01.27 CN 1 21 40 98 82 A 1. A signal switching device for a sample analyzer, the sample analyzer including an optical experimental stage (11) and a sample detection module (12), characterized in that the signal switching device is capable of switching an optical signal emitted from the optical experimental stage (11) between the sample detection module (12) and other devices independent of the sample analyzer. 2. The signal switching device according to claim 1, characterized in that it includes a first optical fiber (110) and a channel (120) located on the sample analyzer, the input port of the first optical fiber (110) being connected to the optical experimental stage (11), and the output port of the first optical fiber (110) being connected to the sample detection module (12) or passing through the channel (120) to connect with other devices. 3. The signal switching device according to claim 1, characterized in that the sample analyzer has a second optical fiber (13), the signal switching device includes a converter (220) located on the sample analyzer, and a third optical fiber (210) connecting the converter (220) and other devices, the input port of the second optical fiber (13) being connected to the optical experimental stage (11), and the output port of the second optical fiber (13) being connected to the sample detection module (12) or the converter (220).4. The signal switching device according to claim 1, characterized in that it includes an optical switch (30), a fourth optical fiber (310) connecting the optical experimental stage (11) and the input interface (31) of the optical switch (30), a fifth optical fiber (320) connecting the first output interface (32) of the optical switch (30) and the sample detection module (12), and a sixth optical fiber (330) connecting the second output interface (33) of the optical switch (30) and other devices; wherein the optical switch (30) is capable of switching the output signal between the first output interface (32) and the second output interface (33). 5. The signal switching device according to claim 4, characterized in that the optical switch (30) further includes a body cover (40), the input interface (31), the first output interface (32) and the second output interface (33) are respectively mounted on the first side plate (41), the second side plate (42) and the third side plate (43) of the body cover (40), the first side plate (41) and the third side plate (43) are parallel to each other, and the second side plate (42) is perpendicular to the first side plate (41) and the third side plate (43). 6. The signal switching device according to claim 5, characterized in that the body cover (40) further includes a first positioning block (44) having a first surface (441), the first surface (441) being positioned at an angle to the first side plate (41). 7. The signal switching device according to claim 6, wherein the optical switch (30) further comprises a body base (50), the body base being connected to the body cover (40), and the body base (50) comprising a second surface (521) parallel to the first surface (441). 8. The signal switching device according to claim 7, wherein the optical switch (30) further comprises a mirror assembly (60), the mirror assembly (60) comprising a mirror body (61) and mounting portions (62) symmetrically disposed at both ends of the mirror body (61), the mirror body (61) being positioned along the second surface (521). 9. The signal switching device according to claim 8, characterized in that the mounting part (62) includes a snap-fit ​​part (621), a connecting part (622) and a handle part (623), the snap-fit ​​part (621) is connected to the mirror body (61), one end of the connecting part (622) is connected to the snap-fit ​​part (621) and the other end is connected to the handle part (623), and the handle part (623) is mounted on the outer side of the end plate (80) of the optical switch (30).10. The signal switching device according to claim 9, characterized in that the end plate (80) is provided with a first groove (81) and a second groove (82) of different sizes, the handle part (623) is provided with a blind hole (624), and the connecting part (622) can extend out of the first groove (81) and the second groove (82) and be inserted into the blind hole (624); wherein, the snap-fit ​​part (621) can slide in the first groove (81), and the connecting part (622) can slide in the second groove (82). Claims 1 / 2 page 2 CN 121409882 A Signal switching device for sample analyzer Technical Field

[0001] This disclosure relates to the technical field of sample analyzers. In particular, this disclosure relates to a signal switching device for a sample analyzer. Background Art

[0002] The contents of this section only provide background information related to this disclosure, which does not necessarily constitute prior art.

[0003] In a sample analyzer, such as a flow cytometer, the light signal generated after the light beam emitted from the light source irradiates the sample being tested is received and converted into an electrical signal inside the sample analyzer, and then transmitted to a computer for processing.

[0004] In order to better analyze the light signal, it is necessary to lead the light signal to a separate spectral detector for analysis. Therefore, a signal switching device is needed to switch the light signal between the sample analyzer and the spectral detector, so that the light signal can be introduced into different devices according to the analysis needs.

[0005] There is no such switching device in the prior art. Summary of the Invention

[0006] This section provides a general summary of the present disclosure, but not a complete disclosure of the full scope or all features of the present disclosure.

[0007] The object of the present disclosure is to provide a signal switching device for a sample analyzer that can switch the light signal between the sample analyzer and other devices, so that the light signal can be introduced into different devices according to the analysis needs.

[0008] According to one aspect of the present disclosure, a signal switching device is provided. The sample analyzer includes an optical experimental stage and a sample detection module. The signal switching device is capable of switching the optical signal emitted from the optical experimental stage between the sample detection module and other devices independent of the sample analyzer.

[0009] In some embodiments according to this disclosure, the signal switching device includes a first optical fiber and a channel located on the sample analyzer. The input port of the first optical fiber is connected to the optical experimental stage, and the output port of the first optical fiber is connected to the sample detection module or extends through the channel to connect with other devices.

[0010] In some embodiments according to this disclosure, the sample analyzer has a second optical fiber, the signal switching device includes an adapter located on the sample analyzer, and a third optical fiber connecting the adapter to other devices, the input port of the second optical fiber being connected to the optical experimental stage, and the output port of the second optical fiber being connected to the sample detection module or the adapter.

[0011] In some embodiments according to this disclosure, the signal switching device includes an optical switch, a fourth optical fiber connecting the optical experimental stage and the input interface of the optical switch, a fifth optical fiber connecting the first output interface of the optical switch and the sample detection module, and a sixth optical fiber connecting the second output interface of the optical switch and other devices; wherein the optical switch is capable of switching the output signal between the first output interface and the second output interface.

[0012] In some embodiments according to the present disclosure, the optical switch further includes a body cover, wherein the input interface, the first output interface, and the second output interface are respectively mounted on a first side plate, a second side plate, and a third side plate of the body cover, the first side plate and the third side plate being parallel to each other, and the second side plate being perpendicular to the first side plate and the third side plate.

[0013] In some embodiments according to the present disclosure, the body cover further includes a first positioning block having a first surface, the first surface being positioned at an angle to the first side plate.

[0014] In some embodiments according to the present disclosure, the optical switch further includes a body base connected to the body cover, the body base including a second surface parallel to the first surface.

[0015] In some embodiments according to the present disclosure, the optical switch further includes a mirror assembly, the mirror assembly including a mirror body and mounting portions symmetrically disposed at both ends of the mirror body, the mirror body being positioned along the second surface.

[0016] In some embodiments according to this disclosure, the mounting portion includes a snap-fit ​​portion, a connecting portion, and a handle portion. The snap-fit ​​portion is connected to the mirror body, one end of the connecting portion is connected to the snap-fit ​​portion, and the other end is connected to the handle portion. The handle portion is mounted on the outer side of the end plate of the optical switch.

[0017] In some embodiments according to this disclosure, the end plate is provided with a first groove and a second groove of different sizes, the handle portion is provided with a blind hole, and the connecting portion can extend out of the first groove and the second groove and be inserted into the blind hole; wherein the snap-fit ​​portion can slide in the first groove, and the connecting portion can slide in the second groove.

[0018] The above and other objects, features, and advantages of this disclosure will be more fully understood from the detailed description given below and the accompanying drawings, which are given by way of illustration only and are therefore not to be considered as limiting the disclosure.

[0019] The features and advantages of one or more embodiments of the present disclosure will become more readily understood from the following description with reference to the accompanying drawings, in which:

[0020] FIG1 is a schematic diagram of a sample analyzer;

[0021] FIG2 is a schematic diagram of a signal switching device according to a first embodiment of the present disclosure;

[0022] FIG3 is a schematic diagram of a signal switching device according to a second embodiment of the present disclosure;

[0023] FIG4 is a schematic diagram of a signal switching device according to a third embodiment of the present disclosure;

[0024] FIG5 is a perspective view of an optical switch;

[0025] FIG6 is an exploded view of an optical switch;

[0026] FIG7 is a perspective view of a body cover;

[0027] FIG8 is a perspective view of a body base;

[0028] FIG9 is a perspective view of a mirror base;

[0029] FIG10 is a perspective view of a mirror assembly;

[0030] FIG11 is a perspective view of an end plate;

[0031] FIG12 is a side view of the optical switch of FIG5, wherein the handle portion is in a first position;

[0032] Figure 13 is a cross-sectional view of the optical switch of Figure 12;

[0033] Figure 14 is a side view of the optical switch of Figure 5, wherein the handle portion is in the second position; and

[0034] Figure 15 is a cross-sectional view of the optical switch of Figure 14. Detailed Description

[0035] The following detailed description of the present disclosure is for illustrative purposes only and is by no means a limitation of the present disclosure or its application or use. The embodiments described in this specification are not exhaustive, but are merely some of a number of possible embodiments. Exemplary embodiments may be implemented in many different forms and should not be construed as limiting the scope of the present disclosure. In some exemplary embodiments, well-known processes, well-known device structures and well-known techniques may not be described in detail.

[0036] The signal switching device according to the present disclosure is suitable for various sample analyzers including optical detection systems. For example, the sample analyzer is used to detect or sort liquid samples containing biological particles (e.g., extracellular vesicles) or non-biological particles (e.g., beads).

[0037] The signal switching device 100 according to the first embodiment of the present disclosure will now be described with reference to FIGS. 1 and 2. In several figures, similar reference numerals denote similar parts and / or components.

[0038] FIG. 1 is a schematic diagram of the sample analyzer 10; FIG. 2 is a schematic diagram of the signal switching device 100 according to the first embodiment of the present disclosure.

[0039] As shown in FIG. 1, the sample analyzer 10 includes an optical experimental stage 11 and a sample detection module 12. The optical experimental stage 11 and the sample detection module 12 are connected by a second optical fiber 13, and the optical experimental stage 11 transmits optical signals to the sample detection module 12 through the second optical fiber 13.

[0040] As shown in FIG. 2, the signal switching device 100 includes a first optical fiber 110 and a channel 120 located on the sample analyzer 10. The first optical fiber 110 can be led out from the sample analyzer 10 through the channel 120.

[0041] As shown in FIG. 2, the spectral detector module 20 is a separate module independent of the sample analyzer 10. The spectral detector module 20 is provided with a first optical fiber interface 21 for connecting the first optical fiber 110. The signal switching device 100 can switch the optical signal output from the optical experimental stage 11 between the sample detection module 12 and the spectral detector module 20 of the sample analyzer 10.

[0042] Specifically, in this embodiment, the signal switching device 100 uses the first optical fiber 110 to replace the original second optical fiber 13 of the sample analyzer 10. The first optical fiber 110 can pass out of the sample analyzer 10 through the channel 120. The first optical fiber 110 is longer than the original second optical fiber 13, so it can be connected to the spectral detector module 20 located outside the sample analyzer 10.

[0043] In this embodiment, the channel 120 is located on the rear panel of the sample analyzer 10.

[0044] When the spectral detector module 20 is needed, the first optical fiber 110 is pulled out from the second optical fiber interface 14 of the sample detection module 12, and then the first optical fiber 110 is passed through the channel 120 and inserted into the first optical fiber interface 21 of the spectral detector module 20; when the sample detection module 12 is needed, the first optical fiber 110 is pulled out from the first optical fiber interface 21 of the spectral detector module 20, and then the first optical fiber 110 is passed through the channel 120 into the sample analyzer 10, and the first optical fiber 110 is wound up until the length of the first optical fiber 110 is suitable for connecting the optical experimental stage 11 and the sample detection module 12, and finally the first optical fiber 110 is inserted into the second optical fiber interface 14 of the sample detection module 12.

[0045] The signal switching device 100 disclosed in this embodiment has a simple structure and low cost.

[0046] The signal switching device 200 according to the second embodiment of the present disclosure will be described below with reference to FIG3. In FIG3, similar reference numerals as above denote similar parts and / or components.

[0047] FIG3 is a schematic diagram of a signal switching device 200 according to a second embodiment of the present disclosure.

[0048] As shown in FIG3, the signal switching device 200 includes a third optical fiber 210 and an adapter 220. The adapter 220 is mounted on the sample analyzer 10, preferably mounted on the rear panel of the sample analyzer 10. The adapter 220 has an input end located inside the sample analyzer 10 and an output end located outside the sample analyzer 10.

[0049] As shown in FIG3, one end of the third optical fiber 210 is connected to the first optical fiber interface 21 of the spectral detector module 20, and the other end is connected to the output end of the adapter 220.

[0050] When the spectral detector module 20 is needed, the second optical fiber 13 in the sample analyzer 10 is unplugged from the second optical fiber interface 14 of the sample detection module 12 and inserted into the input end of the adapter 220. The optical experimental stage 11 and the spectral detector module 20 are connected through the second optical fiber 13, the adapter 220 and the third optical fiber 210. When the sample detection module 12 is needed, the second optical fiber 13 is unplugged from the adapter 220 and inserted into the second optical fiber interface 14 of the sample detection module 12, thereby connecting the optical experimental stage 11 and the sample detection module 12, and disconnecting the connection between the optical experimental stage 11 and the spectral detector module 20.

[0051] The signal switching device 200 disclosed in this embodiment has a simple structure and, compared with the signal switching device 100, avoids the winding of the longer first optical fiber 110, and is also relatively simple to operate.

[0052] The signal switching device 300 according to the third embodiment of this disclosure will be described below with reference to FIG4-15. In Figures 4-15, similar reference numerals as above indicate similar parts and / or components.

[0053] Figure 4 is a schematic diagram of a signal switching device 300 according to a third embodiment of the present disclosure; Figures 5-6 are a perspective view and an exploded view of the optical switch, respectively; Figures 7-11 are structural schematic diagrams of different components of the optical switch; Figures 12-15 are schematic diagrams of the optical switch in different working positions.

[0054] As shown in Figure 4, the signal switching device 300 includes an optical switch 30, a fourth optical fiber 310, a fifth optical fiber 320, and a sixth optical fiber 330. The optical switch 30 is connected to the optical test bench 11 through the fourth optical fiber 310, the fifth optical fiber 320 connects the optical switch 30 and the sample detection module 12, and the sixth optical fiber 330 connects the optical switch 30 and the spectral detector module 20. The optical signal entering the optical switch 30 from the optical test bench 11 through the fourth optical fiber 310 can enter the sample detection module 12 or the spectral detector module 20 through the switching of the optical switch 30.

[0055] Specifically, as shown in FIG5, the optical switch 30 includes an input interface 31, a first output interface 32, and a second output interface 33. A fourth optical fiber 310 connects the optical experimental stage 11 and the input interface 31 of the optical switch 30, a fifth optical fiber 320 connects the first output interface 32 of the optical switch 30 and the sample detection module 12, and a sixth optical fiber 330 connects the second output interface 33 of the optical switch 30 and the spectral detector module 20.The optical switch 30 can switch the output signal between the first output interface 32 and the second output interface 33, so that the light signal emitted from the optical experimental stage 11 enters the optical switch 30 through the fourth optical fiber 310, and can enter the sample detection module 12 through the first output interface 32 and the fifth optical fiber 320, or enter the spectral detector module 20 through the second output interface 33 and the sixth optical fiber 330, after the optical switch 30 switches.

[0056] As shown in Figures 5 and 6, the optical switch 30 also includes a body cover 40 and a body base 50. The body cover 40 and the body base 50, together with the end plate 80 which will be described in detail below, form the main body of the optical switch 30 and provide a mounting base for the other parts of the optical switch 30.

[0057] As shown in Figure 7, the body cover 40 includes a first side plate 41, a second side plate 42 and a third side plate 43, wherein the first side plate 41 and the third side plate 43 are parallel to each other, and the second side plate 42 is perpendicular to the first side plate 41 and the third side plate 43. Multiple first through holes 401, second through holes 402, and third through holes 403 are respectively provided on the first side plate 41, the second side plate 42, and the third side plate 43 along the length direction of the main body cover 40 (left-right direction in FIG. 7). Each first through hole 401 corresponds to an inlet of the input interface 31, each second through hole 402 corresponds to an outlet of the first output interface 32, and each third through hole 403 corresponds to an outlet of the second output interface 33. The positions of the input interface 31, the first output interface 32, and the second output interface 33 in the length direction of the main body cover 40 are one-to-one, so that the light signal incident from the input interface 31 can be emitted along the corresponding first output interface 32 or second output interface 33.

[0058] Further, the main body cover 40 also includes a first positioning block 44, which is connected to the first side plate 41 and the second side plate 42 and extends along the length of the main body cover 40, such that the length of the first positioning block 44 is the same as the length of the first side plate 41 / second side plate 42. The first through hole 401 and the second through hole 402 extend through the first positioning block 44, as shown in Figures 13 and 15. The first positioning block 44 includes a first surface 441, which faces the inner hollow portion of the body cover 40 and is positioned at an angle to the first side plate 41 and / or the second side plate 42.

[0059] In this embodiment, the included angle α between the first surface 441 and the second side plate 42 is 45°.

[0060] Further, as shown in Figure 8, the body base 50 includes a base 51 and a second positioning block 52, and the body base 50 is connected to the body cover 40 via the base 51.

[0061] Exemplarily, as shown in Figures 5 and 6, the body base 50 is connected to the first side plate 41 and the third side plate 43 of the body cover 40 by bolts.

[0062] Further, as shown in FIG8, the second positioning block 52 includes a second surface 521 and a vertical third surface 522. The second surface 521 is positioned parallel to the first surface 441. The third surface 522 is in close contact with the inner surface of the third side plate 43 after the main body base 50 and the main body cover 40 are connected, as shown in FIG13 and FIG15.

[0063] Further, as shown in FIG8, the second positioning block 52 is provided with a plurality of first through slots 53 connecting the second surface 521 and the third surface 522. The position of the first through slot 53 corresponds to the position of the first through hole 401 and the third through hole 403, so that the light signal entering the optical switch 30 from the first through hole 401 can pass through the first through slot 53 and then through the third through hole 403 to be emitted from the second output interface 33.

[0064] Further, in order to enable the light signal incident from the input interface 31 to be emitted from the second output interface 33, as shown in FIG6, the optical switch 30 of this embodiment also includes a mirror assembly 60 and a mirror base 70. The mirror base 70 is positioned along the first surface 441, and the mirror assembly 60 is positioned along the second surface 521, such that the mirror assembly 60 and the mirror base 70 are parallel to each other.

[0065] Further, as shown in FIG8, the second positioning block 52 is provided with a plurality of elastic elements 54 on the second surface 521, and the elastic force of the elastic elements 54 makes the mirror assembly 60 and the mirror base 70 fit tightly together.

[0066] In a preferred embodiment of the present disclosure, the elastic element 54 is a ball-head spring plunger, which abuts against the mirror assembly 60 positioned along the second surface 521, so that the mirror assembly 60 and the mirror base 70 fit tightly together.

[0067] Further, as shown in FIG9, the mirror base 70 is provided with a plurality of second through slots 71. The position of the second through slots 71 is such that when the mirror base 70 is installed between the main body cover 40 and the main body base 50, the position of the second through slots 71 is aligned with the positions of the first through hole 401, the first through slot 53 and the second through hole 402, so that the light signal entering the optical switch 30 can pass through the first through hole 401, the second through slot 71, the first through slot 53 and the second through hole 402 to enter the second output interface 33.

[0068] Further, as shown in FIG10, the mirror assembly 60 includes a mirror body 61 and a mounting part 62. Two mounting parts 62 are symmetrically arranged at both ends of the mirror body 61 in the length direction. Each mounting part 62 includes a snap-fit ​​part 621, a connecting part 622 and a handle part 623. The two snap-fit ​​parts 621 are respectively snapped onto both ends of the mirror body 61 in the length direction. The snap-fit ​​parts 621 are fixed to the mirror body 61, for example, by adhesive. One end of the connecting part 622 is connected to the snap-fit ​​part 621, and the other end is connected to the handle part 623. The handle part 623 is mounted on the end plate 80. The structure of the end plate 80 and the handle part 623 will be described in detail below.

[0069] As shown in Figures 5 and 6, an end plate 80 is provided at each end of the body cover 40 along its length, and the end plate 80 closes both ends of the body cover 40.The end plate 80 and the body cover 40 are connected, for example, by bolts.

[0070] As shown in FIG11, the end plate 80 has a first groove 81 along the inner side (the side facing the body cover 40) to the outer side (the side away from the body cover 40), and a second groove 82 along the outer side to the inner side. The first groove 81 and the second groove 82 are concentrically arranged and pass through the thickness direction of the end plate 80, for guiding the movement of the handle portion 623 of the guide mirror assembly 60.

[0071] Specifically, as shown in FIG6, the handle portion 623 is installed on the outer side of the end plate 80. The handle portion 623 has a blind hole 624. The cross-sectional shape of the blind hole 624 matches the shape of the connecting portion 622. The connecting portion 622 can extend out of the end plate 80 from the first groove 81 and the second groove 82 of the end plate 80 and be inserted into the blind hole 624 of the handle portion 623, so that the mirror body 61 can move up and down along the second surface 521 under the drive of the handle portion 623.

[0072] Further, the dimensions of the first groove 81 and the second groove 82 are such that the connecting part 622 can extend from the first groove 81 and the second groove 82 to connect with the handle part 623, while the snap-fit ​​part 621 can enter the first groove 81 but cannot enter the second groove 82.

[0073] Further, the length direction of the first groove 81 and the second groove 82 is parallel to the second surface 521, so that the movement of the mounting part 62 along the first groove 81 and the second groove 82 can drive the mirror body 61 to move along the second surface 521. Specification 5 / 6 pages 8 CN 121409882 A

[0074] In this embodiment, when the second output interface 33 is needed, the handle part 623 of the mirror assembly 60 is located in the first position in FIG12. In this position, the mirror body 61 is not located in the optical path, so that the optical signal entering the optical switch 30 passes through the first through hole 401, the second through groove 71, the first through groove 53 and the second through hole 402 to reach the second output interface 33, as shown by the arrow in FIG13. When the first output interface 32 is needed, the handle 623 is moved. The handle 623 moves obliquely upward along the first groove 81 and the second groove 82, driving the mirror body 61 to move obliquely upward along the second surface 521 until the handle 623 is in the second position shown in Figure 14. In this position, the mirror body 61 is in the optical path. The light signal reaches the mirror body 61 after passing through the first through hole 401 and the second through groove 71. After being reflected by the mirror body 61, the light signal changes its route and reaches the first output interface 32 through the second through hole 402, as shown by the arrow in Figure 15.

[0075] As shown in Figure 8, since the second positioning block 52 is provided with multiple elastic elements 54 on the second surface 521, the elastic force of the elastic elements 54 makes the mirror assembly 60 and the mirror base 70 fit tightly together to generate static friction. Therefore, when the handle moves the mirror body 61 to the second position, it can overcome the influence of gravity and remain in the second position.

[0076] The signal switching device 300 according to this embodiment achieves optical path switching by moving the handle 623, avoiding the insertion and removal of optical fibers, and is simple to operate.

[0077] Although three embodiments of the signal switching device according to the present disclosure have been described above with reference to FIGS. 1 to 15, it should be understood that the signal switching device according to the present disclosure is not limited to the specific examples shown in the figures, but can be changed as needed. For example, additional components can be added to the signal switching device as needed. For example, an optical fiber holder can be added to hold the optical fiber located outside the sample analyzer 10, etc. In addition, the signal switching device of the present disclosure is not limited to switching optical signals between the sample analyzer and the spectral detector, but can also switch optical signals between other different devices.

[0078] Although the present disclosure has been described with reference to exemplary embodiments, it should be understood that the present disclosure is not limited to the specific embodiments described and shown in detail herein. Various changes can be made to the exemplary embodiments by those skilled in the art without departing from the scope defined by the claims. Features in various embodiments can be combined with each other without contradiction. Alternatively, a feature in an embodiment may be omitted.Instruction manual, page 6 / 6, figure 9 (CN 121409882 A), figure 1 (Instruction manual figure 1 / 11, page 10), figure 2 (Instruction manual figure 2 / 11, page 11), figure 3 (Instruction manual figure 3 / 11, page 12), figure 4 (Instruction manual figure 4 / 11, page 13), figure 5 (Instruction manual figure 5 / 11, page 14), figure 6 (Instruction manual figure 6 / 11, page 15), figure 7 (CN 121409882 A), figure 8 (Instruction manual figure 7 / 11, page 16), figure 9 (Instruction manual figure 10), figure 8 / 11, page 17), figure 11 (CN 121409882 A), figure 12 (Instruction manual figure 9 / 11, page 18), figure 121409882 A Figure 13 Figure 10 / 11 of the specification, page 19 CN 121409882 A Figure 14 Figure 15 Figure 11 / 11 of the specification, page 20 CN 121409882 A Abstract The present disclosure relates to a signal switching device for a sample analyzer. The sample analyzer comprises an optical bench and a sample detection module. The signal switching device can switch optical signals emitted from the optical bench between the sample detection module and other equipment independent of the sample analyzer.

Claims

1. A signal switching device for a sample analyzer, the sample analyzer comprising an optical experimental stage (11) and a sample detection module (12), characterized in that, The signal switching device can switch the optical signal emitted from the optical experimental stage (11) between the sample detection module (12) and other devices independent of the sample analyzer.

2. The signal switching device according to claim 1, characterized in that, It includes a first optical fiber (110) and a channel (120) located on the sample analyzer. The input port of the first optical fiber (110) is connected to the optical experimental stage (11), and the output port of the first optical fiber (110) is connected to the sample detection module (12) or passes through the sample analyzer through the channel (120) to connect with other devices.

3. The signal switching device according to claim 1, characterized in that, The sample analyzer has a second optical fiber (13), and the signal switching device includes an adapter (220) located on the sample analyzer, and a third optical fiber (210) connecting the adapter (220) and other devices. The input port of the second optical fiber (13) is connected to the optical experimental stage (11), and the output port of the second optical fiber (13) is connected to the sample detection module (12) or the adapter (220).

4. The signal switching device according to claim 1, characterized in that, It includes an optical switch (30), a fourth optical fiber (310) connecting the optical experimental stage (11) and the input interface (31) of the optical switch (30), a fifth optical fiber (320) connecting the first output interface (32) of the optical switch (30) and the sample detection module (12), and a sixth optical fiber (330) connecting the second output interface (33) of the optical switch (30) and other devices; The optical switch (30) can switch the output signal between the first output interface (32) and the second output interface (33).

5. The signal switching device according to claim 4, characterized in that, The optical switch (30) also includes a body cover (40). The input interface (31), the first output interface (32) and the second output interface (33) are respectively mounted on the first side plate (41), the second side plate (42) and the third side plate (43) of the body cover (40). The first side plate (41) and the third side plate (43) are parallel to each other, and the second side plate (42) is perpendicular to the first side plate (41) and the third side plate (43).

6. The signal switching device according to claim 5, characterized in that, The body cover (40) also includes a first positioning block (44) having a first surface (441) positioned at an angle to the first side plate (41).

7. The signal switching device according to claim 6, characterized in that, The optical switch (30) also includes a body base (50) connected to the body cover (40), and the body base (50) includes a second surface (521) parallel to the first surface (441).

8. The signal switching device according to claim 7, characterized in that, The optical switch (30) further includes a mirror assembly (60), which includes a mirror body (61) and mounting portions (62) symmetrically arranged at both ends of the mirror body (61). The mirror body (61) is positioned along the second surface (521).

9. The signal switching device according to claim 8, characterized in that, The mounting part (62) includes a snap-fit ​​part (621), a connecting part (622), and a handle part (623). The snap-fit ​​part (621) is connected to the mirror body (61). One end of the connecting part (622) is connected to the snap-fit ​​part (621), and the other end is connected to the handle part (623). The handle part (623) is mounted on the outer side of the end plate (80) of the optical switch (30).

10. The signal switching device according to claim 9, characterized in that, The end plate (80) is provided with a first groove (81) and a second groove (82) of different sizes. The handle part (623) is provided with a blind hole (624). The connecting part (622) can extend out of the first groove (81) and the second groove (82) and be inserted into the blind hole (624). The snap-fit ​​part (621) can slide in the first groove (81), and the connecting part (622) can slide in the second groove (82).

Images