Liquid dispensing device with air flow guiding function

Abstract

The present disclosure describes a liquid dispensing device with an airflow guiding function, which includes a central axis, a supporting mechanism sleeved on the central axis, a liquid transfer chamber supported by the supporting mechanism, a liquid transfer mechanism for performing liquid transfer, and an exhaust mechanism, wherein the central axis has a gas channel, the liquid transfer chamber includes a cover shell having a storage space for accommodating a first container, and a vent communicated with the storage space, a first sealing contact and a second sealing contact are formed between the supporting mechanism and the central axis, and a gas gap is formed between the first sealing contact, the second sealing contact, the outer peripheral surface of the central axis and the turntable, the gas gap is communicated with the gas channel, the gas gap is communicated with the vent of each liquid transfer chamber, the exhaust mechanism is communicated with the gas channel, and is configured to form a negative pressure to guide the airflow in the storage space via the gas channel. According to the present disclosure, by setting a liquid transfer chamber and guiding the airflow in the liquid transfer chamber, liquid splashing generated during the liquid dispensing process can be effectively suppressed.

Description

Technical Field

[0001] The present disclosure relates to a liquid dispensing device with an airflow guiding function. Background Art

[0002] Infusion is a commonly used medical method in clinical practice. Through this medical method, liquid substances such as liquid medicine and nutrient solution can be infused into the patient's body to help the patient recover. When a patient needs to receive an infusion, it is often necessary to mix a variety of different infusion drugs according to the condition to prepare a therapeutic liquid with better efficacy. In clinical practice, medical staff can transfer drugs from different containers such as ampoules or vials into an infusion bag for mixing to obtain the therapeutic liquid required by the patient.

[0003] At present, medical staff and the like usually use manual operation to mix the therapeutic liquid required for infusion for patients. For example, when transferring liquid between an ampoule bottle and an infusion bag, the liquid is sucked or injected into the ampoule bottle by manual operation.

[0004] However, due to the shortage of medical staff in medical institutions at this stage, when faced with a large amount of infusion demand, it is difficult to efficiently prepare the liquid medicine by manual operation; in addition, the liquid medicine may splash during the preparation process, which may also bring adverse effects. Therefore, it is necessary to provide a device that can assist medical staff in preparing liquid, especially to provide a liquid preparation device that can suppress liquid splashing. Summary of the invention

[0005] The present disclosure is proposed in view of the above-mentioned prior art conditions, and its purpose is to provide a liquid dispensing device having a liquid transfer chamber and capable of guiding the airflow in the liquid transfer chamber to suppress liquid splashing.

[0006] To this end, the present disclosure provides a liquid preparation device with an airflow guiding function, which is a liquid preparation device for preparing a solution contained in a first container and a solution contained in a second container by means of an injector, the liquid preparation device comprising a central axis, a supporting mechanism, a plurality of liquid transfer chambers, a plurality of liquid transfer mechanisms, and an exhaust mechanism, the central axis having a gas channel and an opening located on the outer peripheral surface of the central axis and connected to the gas channel, the supporting mechanism comprising a turntable with a central opening in the center, and a plurality of first supporting parts arranged on the turntable and a plurality of second supporting parts arranged on the turntable, the first supporting part being configured to support the first container, the second supporting part being configured to support the second container, the supporting mechanism being sleeved on the central axis via the central opening, the liquid transfer chamber comprising a base assembled on the first supporting part and used to carry the first container, a clamping part installed on the base and used to clamp the first container, A cover shell is mounted on the base and has a storage space for accommodating the first container, and a ventilation portion connected to the storage space, the cover shell has an opening on the side opposite to the base, the pipetting mechanism is configured to hold the syringe and is configured to control the syringe to transfer liquid between the first container and the second container through the opening of the cover shell, the turntable is configured to be rotatable relative to the central axis, and a first sealing contact and a second sealing contact are formed between the turntable and the central axis, and a gas gap is formed between the first sealing contact, the second sealing contact, the outer peripheral surface of the central axis and the turntable, the gas gap is connected to the gas channel via the opening of the central axis, the gas gap is connected to the ventilation portion of each transfer chamber via a gas pipeline, the exhaust mechanism is connected to the gas channel, and is configured to form a negative pressure to guide the airflow in the storage space through the gas channel.

[0007] In the liquid dispensing device of the present disclosure, the first container is accommodated in a housing having a storage space and a vent connected to the storage space, a gas channel is provided on the central axis, a gas gap connected to the gas channel and the vent is provided between the support mechanism and the central axis, and a negative pressure is formed by the exhaust mechanism to guide the airflow in the storage space through the gas channel, the gas gap, and the vent. Thus, liquid splashing generated during the liquid dispensing process can be effectively suppressed.

[0008] In addition, in the liquid dispensing device of the present disclosure, optionally, the first sealing contact and the second sealing contact are sliding contacts, and the support mechanism is configured to rotate around the central axis through the first sealing contact and the second sealing contact. In this case, the gas gap can be formed when the support mechanism rotates by configuring the first sealing contact and the second sealing contact as sliding contacts.

[0009] In addition, in the liquid dispensing device of the present disclosure, optionally, the vent portion includes a shell having a negative pressure space for forming negative pressure, and a pipeline interface provided on the shell and connected to the negative pressure space, and the negative pressure space of the shell is connected to the storage space of the cover. Thus, the airflow in the storage space can be guided through the negative pressure space.

[0010] In addition, in the liquid dispensing device of the present disclosure, optionally, a filter member is provided between the vent and the accommodating space, and the filter member is configured to absorb the liquid. In this case, the liquid is absorbed on the filter member by airflow guidance, thereby effectively suppressing liquid splashing generated during the liquid dispensing process.

[0011] In addition, in the liquid dispensing device of the present disclosure, optionally, the exhaust mechanism is connected to the negative pressure space via the gas channel, the opening, the gas gap, the gas pipeline, and the pipeline interface, and forms a negative pressure in the negative pressure space, so that the airflow in the accommodating space is guided to the negative pressure space. Thus, a complete gas passage can be formed to guide the airflow in the accommodating space.

[0012] In addition, in the liquid dispensing device of the present disclosure, optionally, the central axis is in a hollow cylindrical shape, and the gas channel is arranged in the hollow portion of the central axis. In this case, by setting the central axis in a hollow cylindrical shape, it is easy to set the gas channel.

[0013] In addition, the liquid dispensing device of the present disclosure may optionally further include a driving mechanism for driving the supporting mechanism to rotate, thereby making it easier to drive the supporting mechanism to rotate by driving the driving motor.

[0014] In addition, in the liquid dispensing device of the present disclosure, optionally, the turntable includes a first annular disk and a second annular disk coaxially arranged in the up-down direction and linked to each other, the first supporting portion and the second supporting portion are arranged on the first annular disk, and the driving mechanism drives the second annular disk. In this case, the first annular disk and the second annular disk linked to each other can facilitate the driving of the first annular disk to rotate.

[0015] In addition, in the liquid dispensing device of the present disclosure, optionally, the center of the first annular disk is connected to the center of the second annular disk to form a central opening, and the central opening is cylindrical, thereby facilitating the support mechanism to rotate around the central axis.

[0016] Furthermore, in the liquid dispensing device according to the present disclosure, optionally, the driving motor is connected to the second annular disk via gears.

[0017] The liquid dispensing device with airflow guiding function disclosed in the present invention can effectively suppress liquid splashing generated during the liquid dispensing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present disclosure will now be explained in further detail by way of example only with reference to the accompanying drawings, in which:

[0019] Figure 1A and Figure 1B is a schematic diagram showing a liquid dispensing device, wherein Figure 1A is a schematic diagram showing the coordination between the central axis, the supporting mechanism and the liquid transfer chamber of the liquid dispensing device; Figure 1B It is a schematic diagram showing the cooperation between the transfer chamber and the transfer mechanism.

[0020] Figure 2 2 is a schematic structural diagram showing a first supporting portion of a supporting mechanism according to an example of the present disclosure.

[0021] Figure 3 It is a schematic diagram showing the structure of the transfer chamber involved in the example of the present disclosure.

[0022] Figure 4 is a schematic cross-sectional view showing a central axis involved in an example of the present disclosure.

[0023] Figure 5 2 is a schematic cross-sectional view showing a turntable according to an example of the present disclosure.

[0024] Figure 6 It shows Figure 1A Schematic diagram of the cross section along Y1Y2. DETAILED DESCRIPTION

[0025] Hereinafter, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same symbols are assigned to the same components, and repeated descriptions are omitted. In addition, the accompanying drawings are only schematic diagrams, and the ratio of the dimensions of the components or the shapes of the components may be different from the actual ones.

[0026] It should be noted that the terms "including" and "having" and any variations thereof in the present disclosure, such as a process, method, system, product or device that includes or has a series of steps or units, are not necessarily limited to those steps or units clearly listed, but may include or have other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In addition, the subheadings and the like involved in the following description of the present disclosure are not intended to limit the content or scope of the present disclosure, but are merely used as a reminder for reading. Such subheadings should neither be understood as being used to divide the content of the article, nor should the content under the subheading be limited to the scope of the subheading.

[0028] This embodiment relates to a liquid dispensing device with an airflow guiding function, which is a liquid dispensing device that transfers a solution between a first container and a second container through an injector. The liquid dispensing device with an airflow guiding function can be referred to as a liquid dispensing device, or as a dispensing machine, a dispensing device, an automatic dispensing device, a liquid medicine dispensing device, or a liquid medicine mixing device. In the liquid dispensing device involved in this embodiment, by accommodating the first container in a liquid transfer bin and guiding the airflow in the liquid transfer bin, liquid splashing generated during liquid dispensing can be effectively suppressed.

[0029] Hereinafter, the liquid dispensing device with airflow guiding function according to the present embodiment will be described in detail with reference to the accompanying drawings.

[0030] Figure 1A and Figure 1B is a schematic diagram showing a liquid dispensing device, wherein Figure 1A is a schematic diagram showing the cooperation between the central axis 10, the supporting mechanism 20 and the liquid transfer chamber 30 of the liquid dispensing device; Figure 1B is a schematic diagram showing the cooperation between the transfer chamber 30 and the transfer mechanism 40. It should be noted that Figure 1A and Figure 1B In the specification, for multiple components with the same role or function, a selective label is used, which should not be understood as limiting the number of the components. Figure 1A A transfer chamber 30 is marked in FIG. Figure 1A In practice, a plurality of pipetting chambers 30 are shown.

[0031] In addition, it should be noted that the relative position and relative direction terms such as "above", "towards above", "below", "towards downward", "up and down direction", "left side", "towards the left side", "left side", "towards the left", "right side", "towards the right side", "right side", "towards the right", "left and right direction", "front", "towards the front", "back", "towards the back", "front and back direction" in this document refer to the normal operating posture and should not be considered as restrictive.

[0032] In this embodiment, the liquid dispensing device can support the first container 100 and the second container 200 (see Figure 1A ), and the liquid dispensing device can transfer liquid between the first container 100 and the second container 200. That is, the liquid dispensing device can transfer the liquid contained in the first container 100 to the second container 200, and the liquid dispensing device can also transfer the liquid contained in the second container 200 to the first container 100. In some examples, the liquid dispensing device can transfer liquid between the first container 100 and the second container 200 through the syringe 300 (see Figure 1B ).

[0033] In some examples, the first container 100 may be an ampoule or a vial. In addition, in some examples, the second container 200 may be an infusion bag. Hereinafter, the liquid dispensing device involved in this embodiment is described by taking an ampoule and an infusion bag as examples.

[0034] In this embodiment, the liquid dispensing device may include a central shaft 10, a supporting mechanism 20, a liquid transfer chamber 30, and a liquid transfer mechanism 40 (see Figure 1A and Figure 1B The support mechanism 20 may be disposed on the central axis 10 (see Figure 1A The supporting mechanism 20 can support the transfer chamber 30 and the infusion bag, and the transfer chamber 30 can be used to accommodate an ampoule bottle (see Figure 1A The pipetting mechanism 40 can be configured to perform pipetting between the ampoule bottle and the infusion bag (see Figure 1B ).

[0035] In some examples, the liquid dispensing device can be used in conjunction with the identification device 800. For example, before dispensing, the identification device 800 can identify whether the ampoule bottle to be placed in the liquid transfer bin 30 meets the expectations. In some examples, the liquid dispensing device can also be used in conjunction with the transport device 900. For example, the transport device 900 transports the identified and expected ampoule bottle from the identification device 800 to the liquid transfer bin 30.

[0036] See below Figure 1A and Figure 1B The liquid preparation device is used to explain the pipetting process.

[0037] In some examples, the pipetting mechanism 40 can be configured to control the syringe 300 to perform pipetting between the ampoule bottle and the infusion bag (see Figure 1A and Figure 1B ).exist Figure 1A and Figure 1B In the illustrated embodiment, along the direction D1 may be understood as toward the right, along the direction D2 may be understood as toward the left, along the direction D3 may be understood as toward the bottom, and along the direction D4 may be understood as toward the top.

[0038] In some examples, the pipetting mechanism 40 is configured to hold the syringe of the syringe-injector 300, and is configured to move the syringe-injector 300 in the left-right direction and in the up-down direction, so that the needle tube of the syringe-injector 300 is aligned with the ampoule bottle or the infusion bag, and enters or leaves the ampoule bottle or the infusion bag. In addition, the pipetting mechanism 40 is also configured to push and pull the piston of the syringe-injector 300 in the up-down direction to absorb or inject the liquid medicine into the ampoule bottle or the infusion bag.

[0039] Taking the transfer of the liquid medicine in the ampoule bottle to the infusion bag as an example, first, the pipetting mechanism 40 can move along the D1 direction or the D2 direction to align the needle tube of the injector 300 with the bottle mouth of the ampoule bottle, and the pipetting mechanism 40 can move the injector 300 along the D3 direction to make the needle tube of the injector 300 enter the ampoule bottle; then, the pipetting mechanism 40 can pull the piston of the injector 300 along the D4 direction to absorb the liquid medicine in the ampoule bottle; then, the pipetting mechanism 40 can move the injector 300 along the D4 direction to make the injector 300 The needle of the syringe-aspirator 300 leaves the ampoule, and the pipetting mechanism 40 can move along the D1 direction or the D2 direction to align the needle of the syringe-aspirator 300 with the bag opening of the infusion bag, and the pipetting mechanism 40 can move the syringe-aspirator 300 along the D3 direction to make the needle of the syringe-aspirator 300 enter the infusion bag; then, the pipetting mechanism 40 can push the piston of the syringe-aspirator 300 along the D3 direction to inject the medicine into the infusion bag; finally, the pipetting mechanism 40 can move the syringe-aspirator 300 along the D4 direction to make the needle of the syringe-aspirator 300 leave the infusion bag.

[0040] In the above-mentioned process of transferring liquid, for example, when the transfer mechanism 40 controls the injector 300 to absorb the liquid in the ampoule, liquid splashing may occur, and the liquid splashing outward may also have an adverse effect on the liquid preparation device or other components of the liquid preparation system. In order to deal with the above-mentioned problem of liquid splashing, the inventors and others proposed to use a transfer bin 30 to accommodate the ampoule, so as to suppress the liquid splashing generated during the liquid preparation process through the transfer bin 30.

[0041] In addition, the inventors have also proposed a guiding system that can be used in a liquid dispensing device and can guide the airflow in the liquid transfer chamber 30 during the liquid dispensing process, so as to directionally guide the liquid splashing outward, thereby more effectively suppressing the liquid splashing generated during the liquid dispensing process. The airflow guiding system of the liquid dispensing device involved in the present disclosure is described in detail below in conjunction with the accompanying drawings.

[0042] In some examples, the airflow guiding system can be formed by the cooperation of the central shaft 10, the supporting mechanism 20, the transfer chamber 30, etc.

[0043] In some examples, the support mechanism 20 may include a turntable 21, a first support portion 22 disposed on the turntable 21, and a second support portion 23 disposed on the turntable 21 (see Figure 1A ).

[0044] In some examples, the first support portion 22 and the second support portion 23 may be adjacent to each other (see Figure 1A The first support portion 22 can be configured to support the transfer chamber 30, and the second support portion 23 can be configured to support the infusion bag (see Figure 1A ).

[0045] In some examples, the turntable 21 may be disc-shaped in a top view and configured to rotate along a left-right direction, for example, along Figure 1A In the embodiment shown, the turntable 21 rotates in the direction indicated by D1 or the direction indicated by D2. In some examples, the turntable 21 can rotate in the horizontal plane. That is, in some examples, Figure 1A The direction indicated by D1 can be understood as horizontally to the left, and the direction indicated by D2 can be understood as horizontally to the right. In some examples, the first support portion 22 and the second support portion 23 can be arranged on the outer periphery of the turntable 21 (see Figure 1A ).

[0046] In some examples, the number of the first support portion 22 can be one or more (see Figure 1A ). In some examples, the number of the first supporting portions 22 can be 1-12, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.

[0047] In some examples, the number of the second support portion 23 can be one or more (see Figure 1A ). In some examples, the number of the second supporting portions 23 may be equal to the number of the first supporting portions 21. In some examples, the number of the second supporting portions 23 may be 1-12, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.

[0048] In some examples, the first support portion 22 and the second support portion 23 may be arranged alternately and adjacently on the turntable 21 (see Figure 1A That is, for example, with a first support portion 22 and a second support portion 23 as a pair of support portions, multiple pairs of support portions may be arranged along the circumferential direction of the turntable 21, and the first support portion 22 and the second support portion 23 are arranged adjacent to each other (see Figure 1A ).

[0049] Figure 2 2 is a schematic diagram showing the structure of the first support portion 22 of the support mechanism 20 according to the example of the present disclosure.

[0050] In some examples, the first support portion 22 may be U-shaped (see Figure 2 ). Thus, a U-shaped structure for engagement can be provided. In addition, in some examples, the first support portion 22 can be in the form of a thin sheet. In addition, in some examples, a ridge-shaped protrusion (not shown) can be provided along the inner edge of the U-shaped structure of the first support portion 22.

[0051] Figure 3 Schematic diagram showing the structure of the liquid transfer chamber 30 involved in the example of the present disclosure.

[0052] In some examples, the pipetting chamber 30 may include a base 31 and a cover 32 mounted on the base 31 (see Figure 3 ). The base 31 may be configured to be assembled on the first support portion 22, and the base 31 may be used to carry the first container 100. The cover 32 may have a receiving space for receiving the first container 100. In this case, the cover 32 can suppress liquid splashing generated during the liquid preparation process.

[0053] In some examples, the base 31 may be in a tongue shape that matches the first support portion 22 (see Figure 3 In this case, the base 31 can be engaged with the first support portion 22 by moving the base 31 from the opening of the first support portion 22 toward the closed portion of the first support portion 22 .

[0054] In some examples, a continuous ridge-shaped groove is provided on the outer periphery of the base 31 (see Figure 3 In this case, the first support part 22 in the form of a thin sheet or the ridge-shaped protrusion on the inner edge of the first support part 22 can be engaged with the base 31 by being embedded in the ridge-shaped groove of the base 31. In some examples, the end of the base 31 inserted into the first support part 22 can be in an arc shape. Thus, it is easy to engage.

[0055] In addition, in some examples, the base 31 can be roughly divided into two parts along its length direction, namely, a first part 31a having a ridge-like groove and a second part 31b without a ridge-like groove (see Figure 3 ). The first portion 31 a may be engaged in the U-shaped structure of the first supporting portion 22 , and the second portion 31 b may be located outside the U-shaped structure of the first supporting portion 22 .

[0056] In addition, in some examples, a limit portion may be formed at the connection between the first portion 31a and the second portion 31b. For example, at the connection between the first portion 31a and the second portion 31b, the width of the second portion 31b may be greater than the width of the first portion 31a. In other words, the connection between the first portion 31a and the second portion 31b may be formed in a stepped shape. In this case, when assembling, it is convenient to limit the depth of engagement, thereby effectively suppressing over-engagement or under-engagement, so that the base 31 can be assembled to the first support portion 22 more stably.

[0057] In addition, in some examples, the cover 32 may have an opening on a side opposite to the base 31 (see Figure 3 The pipetting mechanism 40 may be configured to control the syringe-pipettor 300 to perform pipetting between the ampoule bottle and the infusion bag through the opening of the cover shell 32 .

[0058] In addition, in some examples, the transfer chamber 30 may further include a clamping portion (not shown). The clamping portion may be mounted on the base 31, and the clamping portion may be used to clamp the first container 100. Thus, the base 31 may carry the first container 100 more stably through the clamping portion.

[0059] In addition, in some examples, the transfer chamber 30 may further include a vent 33 connected to the receiving space of the housing 32 (see Figure 3 The vent portion 33 may be in communication with the outside, so that gas flow may occur between the accommodation space and the outside through the vent portion 33 .

[0060] In some examples, the vent 33 may include a housing 331 (see Figure 3 ). In some examples, the housing 331 may have a negative pressure space for forming negative pressure, and the negative pressure space of the housing 331 may be connected to the accommodation space of the housing 32. In this case, when a negative pressure environment is formed in the negative pressure space, the airflow in the accommodation space of the housing 32 can be guided to the negative pressure space. Thus, the airflow in the accommodation space can be guided through the negative pressure space.

[0061] In addition, in some examples, the vent 33 may further include a pipeline interface 332 disposed on the housing 331. In some examples, the pipeline interface 332 may be in communication with the negative pressure space. In some examples, an external device may form a negative pressure environment in the negative pressure space via the pipeline interface 332. In this case, the accommodating space of the housing 32 may generate gas flow with the outside world via the pipeline interface 332 and the negative pressure space 331.

[0062] In addition, in some examples, a filter member 34 may be provided between the vent 34 and the accommodation space (see Figure 3 ). The filter member 34 may be configured to absorb the liquid, for example, the filter member 34 may include filter cotton. In this case, when the airflow in the accommodation space is guided to the negative pressure space, the splashed liquid can be absorbed on the filter member 34, thereby more effectively suppressing the splash of liquid generated during the liquid preparation process.

[0063] Figure 4 1 is a schematic cross-sectional view showing a central axis 10 according to an example of the present disclosure.

[0064] In some examples, the central shaft 10 may have a gas passage 11 (see Figure 2). In some examples, the central shaft 10 may be cylindrical. In addition, in some examples, the central shaft 10 may be hollow cylindrical. Thus, the gas passage 11 may be disposed in the hollow portion of the central shaft 10. In this case, by configuring the central shaft 10 to be hollow cylindrical, it is possible to facilitate the arrangement of the gas passage 11.

[0065] In addition, in some examples, the central shaft 10 may also have an opening 12 located on the outer peripheral surface of the central shaft 10 and connected to the gas channel 11 (see Figure 2 ). That is to say, the gas channel 11 can be connected to the outside through the outer peripheral surface of the central axis 10.

[0066] In addition, in some examples, the number of openings 12 may be one or more. In some examples, the number of openings 12 may be 1-8, such as 1, 2, 3, 4, 5, 6, 7, or 8. In some examples, the plurality of openings 12 may be evenly distributed on the outer circumference of the central shaft 10.

[0067] Figure 5 2 is a schematic cross-sectional view showing a turntable 21 according to an example of the present disclosure.

[0068] In some examples, the turntable 21 may include a first annular disk 211 and a second annular disk 212 coaxially disposed in the up-down direction (see Figure 5 In some examples, the first annular disk 211 may have a circular opening in the center, the second annular disk 212 may also have a circular opening in the center, and the circular opening of the first annular disk 211 is connected to the circular opening of the second annular disk 212 to form a cylindrical portion 213 in the center of the turntable 21 (see Figure 5 ). The cylindrical portion 213 may be formed with a central opening in a cylindrical shape.

[0069] In some examples, the first supporting portion 22 and the second supporting portion 23 may be disposed on the first annular disk 211 of the turntable 21 .

[0070] In some examples, the first annular disk 211 may include a first through hole 211a (see Figure 5 ). The first through hole 211a may penetrate the first annular disk 211 in the up-down direction. In some examples, the number of the first through holes 211a may be one or more. In some examples, the number of the first through holes 211a may be 1-12, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.

[0071] In addition, in some examples, the number of the first through holes 211a can be equal to the number of the transfer chambers 30. Also, in some examples, the positions of the first through holes 211a on the first annular disk 211 can correspond to the positions of the transfer chambers 30, for example, near the vents 33 of the transfer chambers 30.

[0072] In some examples, the cylindrical portion 213 may include a second through hole 213a (see Figure 5 ). The second through hole 213a may penetrate the cylindrical portion 213 along the left-right direction. In some examples, the number of the second through holes 213a may be one or more. In some examples, the number of the second through holes 213a may be 1-12, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.

[0073] In addition, in some examples, the number of the second through holes 213a may be equal to the number of the transfer chamber 30. Also, in some examples, the positions of the second through holes 213a on the cylindrical portion 213 may correspond to the positions of the first through holes 211a, for example, near the first through holes 211a.

[0074] Figure 6 It shows Figure 1A Schematic diagram of the cross section along Y1Y2. In other words, Figure 6 It is a cross-sectional schematic diagram showing the coordination among the central shaft 10 , the supporting mechanism 20 and the liquid transfer chamber 30 .

[0075] In some examples, the support mechanism 20 can be sleeved on the central shaft 10 through the central opening of the turntable 21 (see Figure 6 ). In some examples, the turntable 21 can be configured to rotate relative to the central axis 10. In some examples, the liquid dispensing device can be provided with a bottle feeding station, a liquid transfer station, a bottle arrangement station, a labeling station, etc. along the circumferential direction of the turntable 21. In this case, by rotating the turntable 21, it is possible to easily move the multiple liquid transfer bins 30 and the multiple infusion bags supported on the turntable 21 to different stations for corresponding process processing.

[0076] In some examples, a first sealing contact S1 and a second sealing contact S2 may be formed between the turntable 21 and the central shaft 10 (see Figure 6 In addition, in some examples, a gas gap S3 may be formed between the first sealing contact S1, the second sealing contact S2, the outer peripheral surface of the central shaft 10 and the cylindrical portion 213 of the turntable 21 (see Figure 6 ).

[0077] In some examples, the first sealing contact S1 and the second sealing contact S2 may be sliding contacts. In some examples, the first sealing contact S1 and the second sealing contact S2 may be annular contacts. The support mechanism 20 is configured to be rotatable around the central axis 10 by the first sealing contact S1 and the second sealing contact S2. In this case, the gas gap S3 can be formed even when the support mechanism 20 rotates by configuring the first sealing contact S1 and the second sealing contact S2 as sliding contacts and annular contacts.

[0078] In addition, in some examples, the gas gap S3 may communicate with the gas channel 11 via the opening 12 of the central shaft 10. That is, the first sealing contact S1 and the second sealing contact S2 may be disposed on both sides of the opening 12 of the central shaft 10 along the up-down direction.

[0079] In addition, in some examples, the gas gap S3 can be connected to the vent 33 of each transfer chamber 30 via a gas pipeline (see Figure 6 ). It should be noted that, as a schematic diagram, Figure 6 FIG. 1 shows the connection relationship between the gas gap S3 and one of the liquid transfer chambers 30. The connection relationship between the other liquid transfer chambers 30 and the gas gap S3 can be referred to. Figure 6 Instructions in .

[0080] In some examples, the pipeline interface 332 of the transfer chamber 30 can be connected to the first through hole 211a through the first pipeline T1, and the first through hole 211a can be connected to the second through hole 213a through the second pipeline T2 (see Figure 6 ). Thus, the gas gap S3 can be communicated with the vent 33 of the transfer chamber 30.

[0081] In summary, the transfer chamber 30 can be connected to the gas channel 11 via the negative pressure space of the vent 33, the pipeline interface 332 of the vent 33, the first pipeline T1, the first through hole 211a, the second pipeline T2, the second through hole 213a, the gas gap S3 and the opening 12. In this case, by forming an airflow passage between the accommodating space of the transfer chamber 30 and the gas channel 11 of the central axis 10, it is convenient to guide the airflow in the transfer chamber 30 from the outside.

[0082] In addition, by configuring the first sealing contact S1 as a sliding contact and the second sealing contact S2 as a sliding contact, and forming a gas gap between the first sealing contact S1, the second sealing contact S2, the cylindrical portion 213, and the outer peripheral surface of the center axis 10, a good airflow path can be formed between the liquid transfer chamber 30 and the gas channel 11 when the turntable 21 rotates, thereby guiding the airflow in the liquid transfer chamber 30 when the turntable 21 rotates.

[0083] In addition, in some examples, the liquid dispensing device may further include an exhaust mechanism 50 (see Figure 6 ). The exhaust mechanism 50 can be connected to the gas channel 11 of the central axis 10. In some examples, the exhaust mechanism 50 is configured to form a negative pressure. In this case, the airflow in the transfer chamber 30 can be guided by the exhaust mechanism 50 and the airflow passage formed between the transfer chamber 30 and the gas channel 11. As a result, the splashing of liquid generated during the liquid preparation can be more effectively suppressed.

[0084] That is, the exhaust mechanism 50 can be connected to the negative pressure space via the gas channel 11, the opening 12, the gas gap S3, the second through hole 213a, the second pipeline T2, the first through hole 211a, the first pipeline T1, and the pipeline interface 332, and a negative pressure environment is formed in the negative pressure space, so that the airflow in the accommodating space is guided to the negative pressure space, and is guided to the outside through the airflow path formed between the liquid transfer chamber 30 and the gas channel 11. In this way, the splashing of liquid generated during the liquid preparation can be effectively suppressed.

[0085] In addition, in some examples, the liquid dispensing device can be entirely contained in a clean room, and a gas circulation system for gas exchange is provided between the clean room and the outdoor environment. In some examples, the exhaust mechanism 50 can guide the airflow in the liquid transfer chamber 30 to the gas circulation system of the clean room, and further to the outdoor environment.

[0086] In addition, in some examples, the liquid dispensing device may further include a driving mechanism 60 (see Figure 6 ). The driving mechanism 60 can drive the second annular disk 212 to rotate. In this case, by driving the second annular disk 212 that is linked to the first annular disk 211, it is easy to drive the first annular disk 211 to rotate. In addition, in some examples, the driving mechanism 60 and the second annular disk 212 can be connected by gears.

[0087] Although the present disclosure is specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the above description does not limit the present disclosure in any form. Those skilled in the art may modify and change the present disclosure as needed without departing from the essential spirit and scope of the present disclosure, and these modifications and changes all fall within the scope of the present disclosure.

Claims

1. A liquid dispensing device with an airflow guiding function, which is a liquid dispensing device for dispensing a solution contained in a first container and a solution contained in a second container through an injector, characterized in that: The liquid dispensing device includes a central axis, a supporting mechanism, a plurality of liquid transfer chambers, a plurality of liquid transfer mechanisms, and an exhaust mechanism, wherein the central axis has a gas channel and an opening located on the outer peripheral surface of the central axis and connected to the gas channel, the supporting mechanism includes a turntable with a central opening in the center, and a plurality of first supporting parts arranged on the turntable and a plurality of second supporting parts arranged on the turntable, the first supporting part is configured to support the first container, the second supporting part is configured to support the second container, the supporting mechanism is sleeved on the central axis via the central opening, the liquid transfer chamber includes a base assembled on the first supporting part and used to carry the first container, a clamping part installed on the base and used to clamp the first container, a base mounted on the base and having A cover shell is provided with a storage space for accommodating the first container, and a vent communicated with the storage space, the cover shell has an opening on a side opposite to the base, the pipetting mechanism is configured to hold the syringe and aspirator, and is configured to control the syringe and aspirator to perform pipetting between the first container and the second container through the opening of the cover shell, the turntable is configured to be rotatable relative to the central axis, and a first sealing contact and a second sealing contact are formed between the turntable and the central axis, and a gas gap is formed between the first sealing contact, the second sealing contact, the outer peripheral surface of the central axis and the turntable, the gas gap is communicated with the gas channel via the opening of the central axis, and the gas gap is communicated with the vents of each transfer bin via a gas pipeline, The exhaust mechanism is in communication with the gas passage and is configured to form a negative pressure to guide the air flow in the accommodation space through the gas passage.

2. The liquid dispensing device according to claim 1, characterized in that: The first sealing contact and the second sealing contact are sliding contacts, and the support mechanism is configured to be rotatable around the central axis through the first sealing contact and the second sealing contact.

3. The liquid dispensing device according to claim 1, characterized in that: The vent portion includes a shell having a negative pressure space for forming negative pressure, and a pipeline interface provided on the shell and communicating with the negative pressure space, and the negative pressure space of the shell is communicated with the accommodating space of the housing.

4. The liquid dispensing device according to claim 1, characterized in that: A filter member is provided between the vent and the accommodation space, and the filter member is configured to absorb liquid.

5. The liquid dispensing device according to claim 3, characterized in that: The exhaust mechanism is connected to the negative pressure space via the gas channel, the opening, the gas gap, the gas pipeline, and the pipeline interface and forms a negative pressure in the negative pressure space, so that the airflow in the accommodating space is guided to the negative pressure space.

6. The liquid dispensing device according to claim 1, characterized in that: The central shaft is in a hollow cylindrical shape, and the gas channel is arranged in the hollow portion of the central shaft.

7. The liquid dispensing device according to claim 1, characterized in that: It also includes a driving mechanism for driving the supporting mechanism to rotate.

8. The liquid dispensing device according to claim 7, characterized in that: The turntable includes a first annular disk and a second annular disk coaxially disposed in the up-down direction and linked to each other, the first supporting portion and the second supporting portion are disposed on the first annular disk, and the driving mechanism drives the second annular disk.

9. The liquid dispensing device according to claim 8, characterized in that: The center of the first annular disk is connected to the center of the second annular disk to form the central opening, and the central opening is cylindrical.

10. The liquid dispensing device according to claim 8, characterized in that: The driving mechanism is connected to the second annular disk via gears.

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