CN219744887U - Test tube clamping device and medical equipment - Google Patents

Abstract

The utility model discloses a test tube clamping device and medical equipment, and belongs to the technical field of medical equipment, wherein the test tube clamping device comprises a clamping module, a transmission assembly and a driving module, the clamping module comprises at least two clamping units, each clamping unit comprises a test tube seat, a first clamping part and a second clamping part, test tubes are placed through the test tube seat, the first clamping parts in all the clamping units are connected through a first connecting rod, the second clamping parts in all the clamping units are connected through a second connecting rod, the first connecting rod and the second connecting rod are driven to synchronously move through the driving module, so that the first clamping part and the second clamping part on each clamping unit can be driven to relatively move to clamp or loosen the test tubes, manual operation is not needed, two or more test tubes can be clamped through the test tube clamping device at the same time, the uncapping operation of the test tubes is facilitated, the sample detection efficiency is improved, and the test tube clamping device is suitable for the medical equipment such as nucleic acid detection.

Description

Test tube clamping device and medical equipment

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a test tube clamping device and medical equipment.

Background

Currently, in order to realize automatic operation in the nucleic acid detection process, a sample test tube needs to be clamped and fixed by a test tube clamping device, and then a tube cover of the test tube is opened by rotation of a gripper. In the related art, the test tube clamping device needs to convey the test tube to the clamp by utilizing the conveying mechanism for clamping and fixing, only clamps and uncaps one test tube each time, and cannot meet the requirement of simultaneously clamping and fixing a plurality of test tubes, so that the sample detection efficiency is lower.

Disclosure of Invention

The utility model aims to solve the technical problems existing in the prior art. Therefore, the utility model provides the test tube clamping device which can clamp at least two test tubes simultaneously for operation, and effectively improves the treatment efficiency.

The utility model also provides medical equipment comprising the test tube clamping device.

According to a first aspect of the utility model, a test tube clamping device comprises a clamping module, a transmission assembly and a driving module, wherein the clamping module comprises at least two clamping units, each clamping unit comprises a test tube seat, a first clamping part and a second clamping part, and the first clamping part and the second clamping part are slidably arranged on two opposite sides of the test tube seat; the transmission assembly comprises a first connecting rod and a second connecting rod which are arranged at intervals, the first connecting rod is connected with the first clamping parts in all the clamping units, and the second connecting rod is connected with the second clamping parts in all the clamping units; the driving module is connected with the transmission assembly, and drives the first connecting rod to move with the second connecting rod, so that the first clamping part and the second clamping part can be matched to clamp or loosen the test tube in the test tube seat.

The test tube clamping device provided by the embodiment of the utility model has at least the following beneficial effects:

the clamping module adopts at least two clamping units, each clamping unit is used for placing test tubes through the test tube seat, the first clamping parts in all clamping units are connected through the first connecting rod, the second clamping parts in all clamping units are connected through the second connecting rod, the first connecting rod and the second connecting rod are driven to synchronously move through the driving module, so that the first clamping parts and the second clamping parts on each clamping unit can be driven to relatively move to clamp or loosen the test tubes, manual operation is not needed, two or more test tubes can be clamped simultaneously through the test tube clamping device, the test tube can be conveniently uncapped, the sample detection efficiency is improved, and the clamping module is suitable for medical equipment such as nucleic acid detection.

According to some embodiments of the utility model, the transmission assembly further comprises a transmission gear located between the first link and the second link, the first link and the second link being provided with racks respectively engaged with the transmission gear, the first link or the second link being connected with the driving module.

According to some embodiments of the utility model, the transmission assembly further comprises a first guide rail and a second guide rail, the first guide rail is provided with a first sliding seat, the second guide rail is provided with a second sliding seat, the first connecting rod is in sliding connection with the first guide rail through the first sliding seat, and the second connecting rod is in sliding connection with the second guide rail through the second sliding seat.

According to some embodiments of the utility model, the transmission assembly further comprises a supporting seat and a limiting column, the first guide rail and the second guide rail are both fixedly connected to the supporting seat, the transmission gear is rotatably connected to the supporting seat and located between the first guide rail and the second guide rail, and the limiting column is connected to the supporting seat and used for limiting the moving distance of the first sliding seat or the second sliding seat.

According to some embodiments of the utility model, the drive module comprises a drive mechanism, a screw assembly and a third slide, wherein the screw assembly comprises a screw and a nut fixing block in sliding connection with the screw, the screw is connected with the drive mechanism, the third slide is connected with the nut fixing block, and the first connecting rod is connected with the third slide.

According to some embodiments of the utility model, the drive mechanism comprises a motor, a drive wheel, a driven wheel, and a transmission belt, wherein a drive shaft of the motor is connected with the drive wheel, the driven wheel is connected with the screw rod, and the transmission belt is connected with the drive wheel and the driven wheel.

According to some embodiments of the utility model, the drive module further comprises a third guide rail disposed along a length direction of the wire rod, and the nut fixing block is slidably connected with the third guide rail.

According to some embodiments of the utility model, the first clamping portion comprises a first slider and a first guide, the first slider being slidably connected to the first guide, the first slider being connected to the first link; the second clamping part comprises a second sliding block and a second guide piece, the second sliding block is connected with the second guide piece in a sliding mode, the second sliding block is connected with the second connecting rod, and gaskets are respectively arranged on one sides, opposite to the first sliding block, of the second sliding block.

According to some embodiments of the utility model, the clamping module further comprises a base, the test tube holder is fixedly connected to the base, the base is provided with a first support column and a second support column, the first support column and the second support column are respectively located at two sides of the test tube holder, the first guide piece is fixedly connected with the first support column, and the second guide piece is fixedly connected with the second support column.

A medical device according to an embodiment of the second aspect of the present utility model comprises a tube gripping device according to an embodiment of the first aspect described above.

The medical equipment provided by the embodiment of the utility model has at least the following beneficial effects:

the medical equipment adopts the test tube clamping device of the embodiment, and the first connecting rod and the second connecting rod are driven to synchronously move through the driving module, so that the first clamping part and the second clamping part on each clamping unit can be driven to relatively move, the test tube is clamped or loosened, manual operation is not needed, two or more test tubes can be clamped simultaneously through the test tube clamping device, the test tube can be conveniently uncapped, and the sample detection efficiency is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view showing the overall structure of a test tube clamping device according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing an exploded structure of a tube gripping device according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a partial structure of a transmission assembly connected with a clamping unit according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a portion of a transmission assembly coupled to a base in accordance with an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a driving module according to an embodiment of the utility model.

Reference numerals:

a clamping module 100; a first clamping portion 110; a first slider 111; a first guide 112; a first guide groove 1121; a spacer 113; a second clamping portion 120; a second slider 121; a second guide 122; a second guide groove 1221; a test tube holder 130; a metal spring 131; a base 140; a first support column 150; a second support column 160;

a transmission assembly 200; a first link 210; a first rack 211; an adapter plate 212; a second link 220; a second rack 221; a transmission gear 230; a gear shaft 240; a bearing 241; bearing support 242; a support base 250; a through hole 251; a first rail 260; a first slider 261; a second rail 270; a second slider 271; a limit post 280;

a driving module 300; a mounting base 310; a drive mechanism 320; a motor 321; a drive wheel 322; driven wheel 323; a belt 324; a screw assembly 330; a screw rod 331; a nut fixing block 332; a baffle 3321; a third slider 340; a third rail 350; a photoelectric switch 360;

a test tube 400;

test tube clamping device 1000.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms upper, lower, left, right, etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably determine the specific meaning of the foregoing terms in the present utility model in combination with the specific content of the technical solution.

The following description of the embodiments of the present utility model will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the utility model.

Referring to fig. 1 and 2, a test tube clamping device 1000 according to an embodiment of the present utility model includes a clamping module 100, a transmission assembly 200 and a driving module 300, wherein the clamping module 100 includes four clamping units, the four clamping units are arranged in a straight line, each clamping unit includes a test tube holder 130, a first clamping portion 110 and a second clamping portion 120, the first clamping portion 110 and the second clamping portion 120 are slidably disposed on opposite sides of the test tube holder 130, and the test tube holder 130 is used for placing a test tube 400; the driving module 300 can drive the first clamping part 110 and the second clamping part 120 to move relatively through the transmission assembly 200, so that the first clamping part 110 and the second clamping part 120 can be matched to clamp the test tube 400.

It can be appreciated that, since the clamping units have four clamping units, in order to enable the four clamping units to move synchronously, in the embodiment, the transmission assembly 200 includes the first connecting rod 210 and the second connecting rod 220, the first connecting rod 210 and the second connecting rod 220 are disposed at intervals and are respectively located at two sides of the clamping units, the first clamping portions 110 in the four clamping units are all connected with the first connecting rod 210, the second clamping portions 120 in the four clamping units are all connected with the second connecting rod, all the first clamping portions 110 can be driven to move by the first connecting rod 210, and all the second clamping portions 120 can be driven to move by the second connecting rod 220.

The driving module 300 is connected to the transmission assembly 200, and the driving module 300 drives the first connecting rod 210 and the second connecting rod 220 to move synchronously, so as to drive the first clamping portion 110 and the second clamping portion 120 to move relatively, clamp the test tube 400 on the test tube holder 130, or drive the first clamping portion 110 and the second clamping portion 120 to move back to release the test tube 400.

Referring to fig. 1 and 2, specifically, four clamping units are located between the first link 210 and the second link 220 and are arranged along the length direction of the two links, and the driving module 300 drives the first link 210 and the second link 220 to move in opposite directions, as in fig. 1, when the first link 210 moves to the left, all the first clamping portions 110 will slide along with the first link 210 to the left, and when the second link 220 moves to the right, all the second clamping portions 120 will slide along with the second link 220 to the right, so that the first clamping portions 110 and the second clamping portions 120 can be in one-to-one correspondence, and four test tubes 400 can be clamped synchronously; since the first link 210 and the second link 220 can reciprocate, clamping and unclamping operations of the test tube 400 can be performed.

It should be noted that, according to the practical application requirement, the test tube clamping device 1000 and the gripper can be used in a matching manner, in a state of clamping the test tube 400, the tube cover of the test tube 400 can be opened by the gripper, no manual operation is needed, and the purpose of automatically opening the cover is achieved.

Of course, the number of the clamping units is not limited to four, but may be two, three or more, and the clamping module 100 of the embodiment is provided with at least two clamping units, specifically selected according to practical application requirements, and the lengths of the first link 210 and the second link 220 are set according to the number of the clamping units. It can be understood that, compared with the operation mode of clamping only one test tube 400 at a time in the related art, the test tube clamping device 1000 can simultaneously drive and clamp a plurality of test tubes 400 through one driving module 300, is convenient for uncapping the plurality of test tubes 400, is more efficient, is suitable for medical equipment such as nucleic acid detection, and effectively improves the sample detection efficiency.

Referring to fig. 3, the transmission assembly 200 of the embodiment of the utility model further includes a transmission gear 230, the transmission gear 230 is located between the first link 210 and the second link 220, one end of the first link 210 near the driving module 300 is provided with a first rack 211, one end of the second link 220 near the driving module 300 is provided with a second rack 221, the first rack 211 and the second rack 221 are respectively meshed with the transmission gear 230, in the embodiment, the first link 210 is connected with the driving module 300, when the first link 210 moves, the second link 220 can be driven to synchronously move by the transmission gear 230, and the first link 210 and the second link 220 can realize reverse movement, and realize transmission by cooperation of the transmission gear 230, the first rack 211 and the second rack 221, so that the structure is stable and reliable.

It can be understood that the first rack 211 is provided with an adapter plate 212, the driving module 300 is connected with the first rack 211 through the adapter plate 212, the first rack 211 and the first link 210 are integrally formed, and the second rack 221 and the second link 220 are integrally formed. Here, by way of example only, in some embodiments, the second link 220 is connected to the driving module 300 through the adapter plate 212, and the driving force of the driving module 300 is transmitted to the first link 210 through the transmission gear 230, so that the two links move synchronously.

Referring to fig. 3 and 4, the transmission assembly 200 includes a support base 250, the support base 250 is provided with a gear shaft 240, a bearing 241 and a bearing seat 242, the bearing 241 is installed in the bearing seat 242, one end of the gear shaft 240 is connected with the transmission gear 230, the other end is rotatably connected with the bearing seat 242 through the bearing 241, the support base 250 is provided with a through hole 251, the bearing seat 242 is installed at the through hole 251, the transmission gear 230 is located between the first guide rail 260 and the second guide rail 270 after being assembled in place, and the transmission gear 230 is supported by the cooperation of the gear shaft 240 and the bearing 241, so that the transmission gear 230 can stably operate.

Referring to fig. 4, in the embodiment, the transmission assembly 200 further includes a first guide rail 260 and a second guide rail 270, where the first guide rail 260 and the second guide rail 270 are disposed in parallel and are both fixedly connected to the supporting seat 250, the first guide rail 260 and the second guide rail 270 are consistent with the length direction of the two connecting rods, a first sliding seat 261 is disposed on the first guide rail 260, a second sliding seat 271 is disposed on the second guide rail 270, the first connecting rod 210 is slidably connected with the first guide rail 260 through the first sliding seat 261, and the second connecting rod 220 is slidably connected with the second guide rail 270 through the second sliding seat 271, as can be understood in conjunction with fig. 1, the first connecting rod 210 moves along the first guide rail 260 and the second connecting rod 220 moves along the second guide rail 270 under the driving action of the driving module 300, so as to perform the guiding action, and be more stable and reliable.

It should be noted that, the first sliding seat 261 and the second sliding seat 271 include two connected sliding blocks, taking the first sliding seat 261 as an example, one sliding block is slidably connected with the first guide rail 260, the other sliding block is connected with the first connecting rod 210, the two sliding blocks and the sliding block and the first connecting rod 210 are respectively locked and fixed by screws, which is only an example, and the specific forms of the first sliding seat 261 and the second sliding seat 271 can be set according to practical application requirements.

Of course, two sliders connecting the first link 210 and the first slider 261 may be provided as one integrated slider, one end of which is fixedly connected to the first link 210 and one end of which is slidably connected to the first slider 261. Similarly, two sliders connecting the second link 220 and the second slider 271 may be provided as one integrated slider, and the connection manner is as described above.

Referring to fig. 4, a limit post 280 is disposed on the support base 250, the limit post 280 is disposed at an end position close to the second guide rail 270, and the movement distance of the second slider 271 can be limited by the limit post 280, so that the movement range of the second link 220 can be limited, and when the movement range of the second link 220 is limited due to the power transmission between the first link 210 and the second link 220 via the transmission gear 230 and the rack, the movement range of the first link 210 is limited, and the movement range of the first clamping portion 110 and the second clamping portion 120 can be prevented from exceeding the limit position by the limit post 280, thereby affecting the structural stability, and preventing the clamping damage to the test tube 400 due to the excessive clamping.

It should be noted that the number of the limiting posts 280 may be two, and the two limiting posts 280 are used for limiting the first sliding seat 261 and the second sliding seat 271 respectively, so that the structure is more reliable.

Referring to fig. 5, the driving module 300 includes a mounting seat 310, a driving mechanism 320, a screw assembly 330 and a third sliding seat 340, wherein the driving mechanism 320, the screw assembly 330 and the third sliding seat 340 are mounted on the mounting seat 310, the screw assembly 330 includes a screw 331 and a nut fixing block 332, the nut fixing block 332 is slidably connected with the screw 331, the driving mechanism 320 is connected with the screw 331, the third sliding seat 340 is connected with the nut fixing block 332, the first connecting rod 210 is connected with the third sliding seat 340, and the driving mechanism 320 can drive the nut fixing block 332 to move along the screw 331 when driving the screw 331 to drive the third sliding seat 340 and the first connecting rod 210 to move together, so as to realize clamping or loosening of the test tube 400 by driving the clamping module 100.

It can be appreciated that the power of the driving mechanism 320 is transmitted to the transmission assembly 200 through the screw 331, so that the utility model has the characteristics of high transmission efficiency, high precision and the like, and can accurately control the first clamping part 110 and the second clamping part 120 to perform clamping action by matching with the combined structure of the transmission gear 230 and the rack, and can provide proper clamping force in the process of clamping the pipe body, so as to avoid the condition of overlarge or overlarge clamping force.

With continued reference to fig. 5, the driving module 300 further includes a third guide rail 350, the third guide rail 350 is disposed on the mounting seat 310, the third guide rail 350 is disposed along the length direction of the screw rod 331, the nut fixing block 332 is slidably connected with the third guide rail 350, the third guide rail 350 plays a guiding role, and the nut fixing block 332 can move along the third guide rail 350 under the driving action of the screw rod 331, so that the operation is more stable and reliable.

It should be noted that, the mounting base 310 is provided with the photoelectric switch 360, the photoelectric switch 360 is provided with a detection opening, the nut fixing block 332 is provided with the blocking piece 3321, the blocking piece 3321 moves along with the nut fixing block 332, when the blocking piece 3321 moves to the detection opening position, the blocking piece 3321 indicates that the nut fixing block 332 reaches the limit position or the origin position, and at this time, the photoelectric switch 360 outputs a signal to control the driving mechanism 320 to stop running, thereby achieving the purpose of controlling the movement range of the first clamping portion 110 and the second clamping portion 120.

Specifically, as shown in fig. 1, when the test tube 400 is released, the nut fixing block 332 drives the third slide 340 and the first link 210 to move to the right, and at this time, the first clamping portion 110 and the second clamping portion 120 move back to each other, that is, the clamping module 100 releases the test tube 400, and when the nut fixing block 332 moves to the origin position, the blocking piece 3321 triggers the photoelectric switch 360 to output a signal, so as to control the driving mechanism 320 to stop outputting power, and accordingly, the first clamping portion 110 and the second clamping portion 120 are restored to the initialized state. Of course, this is merely an example, and the position sensor may also detect the moving position of the nut fixing block 332 to control the operation of the driving mechanism 320, which is specifically selected according to the actual application requirement.

Referring to fig. 5, in the embodiment of the present utility model, the driving mechanism 320 includes a motor 321, a driving wheel 322, a driven wheel 323 and a driving belt 324, wherein a driving shaft of the motor 321 is connected with the driving wheel 322, the driven wheel 323 is connected with the screw 331, the driven wheel 323 is connected with the driving wheel 322 through the driving belt 324, the motor 321 drives the driving wheel 322 to rotate, the driving wheel 322 drives the driven wheel 323 to rotate through the driving belt 324, thereby driving the screw 331 to rotate, and driving the nut fixing block 332 to move along the screw 331 in a horizontal direction, so as to realize stable power output. It should be noted that, because the screw 331 has a self-locking function, in the self-locking mode, after the clamping module 100 clamps the test tube 400, the motor 321 stops working, and the electric plate of the motor 321 is protected.

Referring to fig. 3 and 4, in the embodiment of the utility model, the clamping module 100 includes a base 140, the base 140 is substantially rectangular, the clamping units are distributed along the length direction of the base 140, and the test tube holder 130, the first clamping portion 110 and the second clamping portion 120 of each clamping unit are disposed on the base 140. The first clamping portion 110 includes a first slider 111 and a first guide 112, the first slider 111 is slidably connected to the first guide 112, and the first slider 111 is connected to the first link 210; the second clamping part 120 comprises a second slider 121 and a second guide piece 122, the second slider 121 is slidably connected to the second guide piece 122, the second slider 121 is connected to the second connecting rod 220, gaskets 113 are respectively arranged on opposite sides of the first slider 111 and the second slider 121, the first slider 111 and the second slider 121 can be driven to move relatively or move back to back through the first connecting rod 210 and the second connecting rod 220, so that clamping or loosening of the test tube 400 is achieved, in the process of clamping the test tube 400, the first slider 111 and the second slider 121 can be ensured to clamp the test tube 400 through the gaskets 113, stability and reliability are improved, and non-uniformity of clamping force caused by difference of sizes of the test tube 400 is avoided.

Specifically, in the embodiment, the gasket 113 is a rubber pad, and the first clamping portion 110 is taken as an example for explanation, the first slider 111 is provided with a pressing block, and the rubber pad is pressed on the first slider 111 by the pressing block, so that one end of the rubber pad can protrude from one side of the first slider 111 facing the test tube 400. The test tube 400 can be clamped through the rubber pad cooperation on the first sliding block 111 and the second sliding block 121, and the condition that the test tube 400 is loosened is avoided.

Referring to fig. 4, a first support column 150 and a second support column 160 are disposed on the base 140, the first support column 150 and the second support column 160 are disposed on two sides of the test tube holder 130, the first guide member 112 is fixedly connected to the first support column 150, the second guide member 122 is fixedly connected to the second support column 160, specifically, the first guide member 112 and the second guide member 122 are fixed by screws, wherein the first guide member 112 has a first guide groove 1121 matched with the first slider 111, the second guide member 122 has a guide groove matched with the second slider 121, the first slider 111 and the second slider 121 can be guided, and the structure is more stable.

It should be noted that, since there are test tubes 400 with different tube diameters such as 5 mix 1, 10 mix 1, 20 mix 1 and negative pressure blood collection tube in the market at present, the test tube holder 130 of the present utility model is provided with the metal elastic sheet 131, and the test tubes 400 with different tube diameters can be pre-positioned and clamped through the metal elastic sheet 131, so as to improve stability.

The embodiment of the utility model also provides a medical device, which can be a nucleic acid detection device and the like, and can clamp two or more test tubes 400 simultaneously through the test tube clamping device 1000, so that the test tubes 400 can be conveniently uncapped, and the sample detection efficiency is improved.

Since the medical apparatus adopts all the technical solutions of the test tube clamping device 1000 in the above embodiments, at least all the beneficial effects brought by the technical solutions in the above embodiments are provided, and will not be described in detail herein.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the knowledge of one of ordinary skill in the art.

Claims (10)

1. Test tube clamping device, its characterized in that includes:

the clamping module comprises at least two clamping units, each clamping unit comprises a test tube seat, a first clamping part and a second clamping part, and the first clamping part and the second clamping part are slidably arranged on two opposite sides of the test tube seat;

the transmission assembly comprises a first connecting rod and a second connecting rod which are arranged at intervals, the first connecting rod is connected with the first clamping parts in all the clamping units, and the second connecting rod is connected with the second clamping parts in all the clamping units;

the driving module is connected with the transmission assembly and drives the first connecting rod to move with the second connecting rod, so that the first clamping part and the second clamping part can be matched to clamp or loosen the test tube in the test tube seat.

2. The test tube clamping device according to claim 1, wherein the transmission assembly further comprises a transmission gear, the transmission gear is located between the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod are respectively provided with racks meshed with the transmission gear, and the first connecting rod or the second connecting rod is connected with the driving module.

3. The test tube clamping device according to claim 2, wherein the transmission assembly further comprises a first guide rail and a second guide rail, the first guide rail is provided with a first slide seat, the second guide rail is provided with a second slide seat, the first connecting rod is in sliding connection with the first guide rail through the first slide seat, and the second connecting rod is in sliding connection with the second guide rail through the second slide seat.

4. The test tube clamping device according to claim 3, wherein the transmission assembly further comprises a supporting seat and a limiting column, the first guide rail and the second guide rail are fixedly connected to the supporting seat, the transmission gear is rotatably connected to the supporting seat and located between the first guide rail and the second guide rail, and the limiting column is connected to the supporting seat and used for limiting the moving distance of the first sliding seat or the second sliding seat.

5. The test tube clamping device of claim 1, wherein the drive module comprises a drive mechanism, a screw assembly and a third slide, the screw assembly comprising a screw and a nut block slidably coupled to the screw, the screw coupled to the drive mechanism, the third slide coupled to the nut block, and the first link coupled to the third slide.

6. The test tube clamping device of claim 5, wherein the drive mechanism comprises a motor, a drive wheel, a driven wheel, and a drive belt, wherein a drive shaft of the motor is connected to the drive wheel, the driven wheel is connected to the screw, and the drive belt is connected to the drive wheel and the driven wheel.

7. The test tube clamping device of claim 5, wherein the drive module further comprises a third rail disposed along a length of the screw, the nut block being slidably coupled to the third rail.

8. The test tube clamping device of claim 1, wherein the first clamping portion comprises a first slider and a first guide, the first slider being slidably coupled to the first guide, the first slider being coupled to the first link; the second clamping part comprises a second sliding block and a second guide piece, the second sliding block is connected with the second guide piece in a sliding mode, the second sliding block is connected with the second connecting rod, and gaskets are respectively arranged on one sides, opposite to the first sliding block, of the second sliding block.

9. The test tube clamping device of claim 8, wherein the clamping module further comprises a base, the test tube holder is fixedly connected to the base, the base is provided with a first support column and a second support column, the first support column and the second support column are respectively located at two sides of the test tube holder, the first guide member is fixedly connected with the first support column, and the second guide member is fixedly connected with the second support column.

10. Medical device, characterized in that it comprises a test tube clamping device according to any of claims 1 to 9.