Liquid delivery device and liquid delivery method

Abstract

To provide a liquid transfer device that can easily transfer liquid from a medical bag to a collection container such as a collection bag. [Solution] The fluid delivery device 100 includes a first holding unit 40, a second holding unit 50, a lifting mechanism 60, and a measuring unit 80. The first holding unit 40 holds a medical bag 10, and the second holding unit 50 holds a collection container. The lifting mechanism 60 raises and lowers the second holding unit 50 relative to the first holding unit 40. When delivering fluid from the medical bag 10 to the collection container, the measuring unit 80 measures a parameter for determining the amount of fluid delivered.

Description

[Technical Field]

[0001] The present disclosure relates to a liquid delivery device and a liquid delivery method. [Background technology]

[0002] One type of liquid contained in a medical bag is a blood product. To ensure the safety of blood products, a specified amount of blood product is transferred from the medical bag to a small-capacity collection bag, and then a small amount of blood product is collected from the collection bag into multiple sampling containers for culture testing. This collection is performed using the following procedure.

[0003] First, a collection bag is connected to a medical bag via a tube, then a portion of the blood product is transferred from the medical bag to the collection bag, and then the collection bag is separated from the medical bag.

[0004] Next, in the clean bench, multiple sampling containers are connected to the collection bag, and a predetermined amount of blood product is transferred from the collection bag to the multiple sampling containers. Aerobic culture is performed using one of the multiple sampling containers, and anaerobic culture is performed using another of the multiple sampling containers.

[0005] International Publication No. 2015 / 129520 discloses a hanging jig. Japanese Patent Application Laid-Open No. 2018-260 discloses a workstation. The hanging jig and workstation utilize the height difference between a medical bag and a collection bag to transfer a liquid such as a blood product from the medical bag to the collection bag. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2015 / 129520 [Patent Document 2] JP 2018-260 A Summary of the Invention [Problem to be solved by the invention]

[0007] It is desirable to be able to easily transfer liquid from a medical bag to a collection container such as a collection bag, as this can improve work efficiency, for example, when performing large-scale culture tests of blood products.

[0008] The present invention aims to solve the above-mentioned problems. [Means for solving the problem]

[0009] (1) A first aspect of the present disclosure is a fluid delivery device for transferring a liquid in a medical bag to a collection container connected to the medical bag via a fluid delivery tube, the fluid delivery device comprising: a first holding unit for holding the medical bag; a second holding unit for holding the collection container; a lifting mechanism capable of raising and lowering the second holding unit relative to the first holding unit; and a measuring unit for measuring parameters for determining the amount of liquid delivered from the medical bag to the collection container.

[0010] This configuration facilitates the transfer of liquid from the medical bag to the collection container. In addition, since the liquid delivery device includes a measuring unit, it is possible to easily collect a specified amount of liquid into the collection container.

[0011] (2) In the liquid delivery device described in the above item (1), the lifting mechanism may have a drive unit that drives the second holding unit.

[0012] With this configuration, it is easy to raise or lower the second holding portion relative to the first holding portion.

[0013] (3) The liquid delivery device described in item (2) above may include an operating unit that is operated by an operator, and when the operating unit is operated by the operator, the drive unit lowers the second holding unit relative to the first holding unit, and when the operating unit is operated again by the operator, the drive unit raises the second holding unit relative to the first holding unit to a position where the flow of the liquid from the medical bag to the collection container stops.

[0014] With this configuration, it is easy to raise or lower the second holding portion relative to the first holding portion.

[0015] (4) In the liquid delivery device described in the above item (3), the measurement unit may include a time measurement unit that measures the elapsed time from when the second holding unit starts to descend relative to the first holding unit.

[0016] By measuring the elapsed time, the amount of liquid transferred from the medical bag to the collection container can be determined. Furthermore, by recognizing that the elapsed time has reached the set time determined in the preliminary test, the operator can determine that the specified amount of liquid has been collected in the collection container.

[0017] (5) The liquid delivery device described in item (4) above may include a control unit that controls the drive unit, and when the elapsed time reaches a preset time, the control unit may control the drive unit so that the second holding unit rises relative to the first holding unit, thereby stopping the transfer of the liquid from the medical bag to the collection container.

[0018] With this configuration, the control unit raises the second holding unit, which reduces the operational burden on the operator and prevents an excessive amount of liquid from being transferred to the collection container.

[0019] (6) In the liquid delivery device described in the above item (3), the measurement unit may include a weight measurement unit that measures the weight of the collection container held in the second holder.

[0020] By measuring the weight of the collection container, the amount of liquid transferred from the medical bag to the collection container can be determined. Furthermore, by recognizing that the weight has reached the set weight determined in the preliminary measurement, the operator can determine that the specified amount of liquid has been collected in the collection container.

[0021] (7) The liquid delivery device described in item (6) above may include a control unit that controls the drive unit, and when the weight of the liquid transferred from the medical bag to the collection container reaches a set weight, the control unit may control the drive unit so that the second holding unit rises relative to the first holding unit, thereby stopping the transfer of the liquid from the medical bag to the collection container.

[0022] With this configuration, the control unit raises the second holding unit, which reduces the operational burden on the operator and prevents an excessive amount of liquid from being transferred to the collection container.

[0023] (8) The liquid delivery device according to any one of the above items (1) to (7) may further include a clamp for closing the tube.

[0024] Occluding the tube with a clamp ensures that fluid does not flow from the medical bag to the collection container.

[0025] (9) In the liquid delivery device described in the above item (8), the clamp may be provided on the second holding portion.

[0026] This configuration prevents the clamp from being lost.

[0027] (10) A second aspect of the present disclosure is a fluid transfer method for transferring a liquid in a medical bag to a collection container connected to the medical bag via a fluid transfer tube, the method comprising: a first holding step of holding the medical bag in a first holding part; a second holding step of holding the collection container in a second holding part; a transfer step of lowering the second holding part relative to the first holding part to flow the liquid from the medical bag to the collection container; and a transfer stop step of raising the second holding part relative to the first holding part to stop the flow of the liquid from the medical bag to the collection container, wherein in the transfer step, a measuring unit measures a parameter for determining the amount of the liquid transferred from the medical bag to the collection container.

[0028] By lowering the second holder relative to the first holder, the liquid can be easily transferred from the medical bag to the collection container. Furthermore, by raising the second holder relative to the first holder, the transfer of the liquid from the medical bag to the collection container can be easily stopped. Thus, the above-described liquid transfer method makes it easy to start and stop the transfer of the liquid from the medical bag to the collection container.

[0029] (11) In the liquid transfer method described in item (10) above, the measurement unit may measure the elapsed time since the second holding unit started to descend relative to the first holding unit, and may perform the transfer stopping step when the elapsed time reaches a preset time.

[0030] The amount of fluid transferred from the medical bag to the collection container can be easily determined by measuring the elapsed time. Furthermore, the transfer of fluid can be stopped by performing the transfer stop step when a predetermined amount of fluid has been transferred to the collection container.

[0031] (12) In the liquid transfer method described in item (10) above, the measurement unit may measure the weight of the collection container held in the second holding unit, and perform the transfer stopping step when the weight reaches a set weight.

[0032] The amount of fluid transferred from the medical bag to the collection container can be easily determined by measuring the weight of the collection container. Furthermore, the transfer of fluid can be stopped by performing the transfer stop step when a predetermined amount of fluid has been transferred to the collection container. [Effects of the Invention]

[0033] According to the present disclosure, it is possible to easily transfer liquid from a medical bag to a collection container. In addition, by measuring parameters with a measurement unit, it is easy to adjust the amount of liquid transferred from the medical bag to the collection container to a specified amount. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a schematic perspective view of a liquid delivery device according to an embodiment of the present disclosure in an initial state. [Figure 2] FIG. 2 is a side cross-sectional view of a first holding unit in the liquid delivery device. [Figure 3] FIG. 3 is an explanatory diagram of some steps in a liquid transfer method according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic perspective view of the liquid delivery device in a state where the second holding part is lowered. [Figure 5] FIG. 5 is a schematic perspective view of the liquid delivery device in a state where the second holding part is raised and the tube is closed with a clamp. [Figure 6] FIG. 6 is an explanatory diagram of some steps in a liquid transfer method according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] The following describes an example in which the collection bag 14 shown in Fig. 1 is used as a collection container. However, the collection container is not limited to the collection bag 14. The collection container may be a collection bottle or the like.

[0036] 1 is a schematic perspective view of a liquid delivery device 100 according to this embodiment. The liquid delivery device 100 includes a first holder 40 and a second holder 50. The first holder 40 and the second holder 50 are supported on a base 20 via a first pillar 22 and a second pillar 26. The first holder 40 and the second holder 50 are interposed between the first pillar 22 and the second pillar 26.

[0037] A guide groove 61 is formed in the inner end surface 24 of the first pillar portion 22, which faces the second pillar portion 26. A guide groove 62 is formed in the inner end surface 28 of the second pillar portion 26, which faces the first pillar portion 22. The guide grooves 61, 62 constitute a lifting mechanism 60. The lifting mechanism 60 includes a drive unit 64, which will be described later. When driven by the drive unit 64, the second holding portion 50 is guided by the guide grooves 61, 62 and moves up or down.

[0038] The second pillar 26 has a hollow box shape. A drive unit 64 and a control unit 66 are housed inside the second pillar 26. The drive unit 64 is, for example, a motor having a rotating shaft (not shown). The control unit 66 controls the drive unit 64. The control unit 66 has a calculation unit 66a and a memory unit 66b. The calculation unit 66a is configured by a processor such as a CPU (Central Processing Unit), i.e., processing circuitry. An operation unit 70 and a display 72 are provided on the outer end surface 29 of the second pillar 26, which is the back surface of the inner end surface 28. In the illustrated example, the operation unit 70 is an operation button 71, but the operation unit 70 may also be a selector switch.

[0039] The state before the second holding unit 50 descends is referred to as the initial state. The initial state is the state before the transfer of liquid from the medical bag 10 to the collection bag 14 begins. In the initial state, the first holding unit 40 holds the medical bag 10 containing liquid. In the initial state, the second holding unit 50 holds the empty collection bag 14. The liquid is a medical liquid. Specific examples of the liquid include blood products such as platelet products, but the liquid is not limited to blood products. The liquid may also be a medicinal liquid, physiological saline, etc.

[0040] In the illustrated example, the first holding part 40 holds a plurality of (six in the illustrated example) medical bags 10. However, the number of medical bags 10 held by the first holding part 40 may be one.

[0041] The first holding unit 40 is a fixed base that is positioned and fixed to the first pillars 22 and the second pillars 26. The first holding unit 40 holds the medical bag 10 in a state inclined relative to the vertical direction. Specifically, as shown in FIG. 2, the first holding unit 40 has a first support plate 42 and a second support plate 44 that are inclined relative to the vertical direction. The second support plate 44 is inclined at an angle of 5° to 85° relative to the horizontal direction. The intersection angle between the first support plate 42 and the second support plate 44 is approximately 90°. The first support plate 42 supports a lower portion 10b of the edge portion 10a of the medical bag 10. The second support plate 44 supports a back portion 10c of the medical bag 10. The first holding unit 40 may have a support cover that supports the lower portion of the medical bag 10. The support cover slightly presses against the medical bag 10, thereby maintaining the medical bag 10 at a constant thickness.

[0042] The second support plate 44 has a plurality of notches 46 formed therein. The number of notches 46 is the same as the number of medical bags 10. A tube 12 is passed through each notch 46. One end of the tube 12 is pre-connected to the medical bag 10, and the other end of the tube 12 is joined to the collection bag 14. As will be described later, a liquid flows through the tube 12.

[0043] The second holding unit 50 shown in FIG. 1 is a movable platform that can be raised and lowered relative to the first pillar 22 and the second pillar 26. The second holding unit 50 is disposed between the first pillar 22 and the second pillar 26 and extends parallel to the horizontal direction. The number of collection bags 14 held by the second holding unit 50 is, for example, the same as the number of medical bags 10 held by the first holding unit 40. The second holding unit 50 has a generally flat plate shape and extends horizontally with the mounting surface 52 facing vertically upward. The collection bags 14 are held in a recumbent position on the mounting surface 52 of the second holding unit 50.

[0044] The second holding unit 50 and the drive unit 64 are connected via a power transmission mechanism (not shown). An example of the power transmission mechanism is a pulley and belt. The power transmission mechanism may also be a rack and pinion. When the operator operates the operation button 71, the drive unit 64 operates, and the driving force of the drive unit 64 is transmitted to the second holding unit 50 via the power transmission mechanism. As a result, the second holding unit 50 descends. In response to this, when the operator operates the operation button 71 again, the drive unit 64 operates, and the second holding unit 50 ascends. If the drive unit 64 is a motor, the rotating shaft rotates forward when the operation button 71 is operated, and rotates reversely when the operation button 71 is operated again.

[0045] 1, the second holding part 50 is located at the raised position (highest point). In the illustrated example, the height position of the lower end of the second holding part 50 is approximately the same as the height position of the first holding part 40. However, the raised position of the second holding part 50 may be higher than the height position of the first holding part 40.

[0046] The liquid delivery device 100 includes a measurement unit 80. In this embodiment, the measurement unit 80 has a time measurement unit 82. In the illustrated example, the time measurement unit 82 is a timer that shares a housing with the display 72. Alternatively, the time measurement unit 82 may be one of the constituent circuits of the control unit 66. The time measurement unit 82 starts measuring time at the same time that the second holding unit 50 starts to descend. In other words, the time measurement unit 82 measures the elapsed time since the operator operated the operation button 71. The elapsed time is displayed on the display 72.

[0047] In another embodiment, the measuring unit 80 may have a weight measuring unit 84, as shown by the phantom lines in FIG. 1 , instead of the time measuring unit 82 described above. The weight measuring unit 84 measures the weight of the liquid that has flowed into the collection bag 14. The weight measuring unit 84 is embedded in the second holding unit 50. The weight measuring unit 84 is, for example, an electronic balance. In the illustrated example, the weight measuring unit 84 measures the weight of the liquid that has flowed into one representative collection bag 14 out of the multiple collection bags 14. The measured weight is displayed on an indicator (not shown) of the weight measuring unit 84. The weight may also be displayed on the display 72. Alternatively, the second holding unit 50 may be provided with the same number of weight measuring units 84 as the number of collection bags 14, and the weight of the liquid that has flowed into all of the collection bags 14 may be measured. In this case, the weight of the liquid for all of the collection bags 14 may be displayed on the display 72.

[0048] The measuring unit 80 may have an integrating flow meter instead of the weight measuring unit 84 or the time measuring unit 82 .

[0049] The illustrated liquid delivery device 100 has multiple clamps 30. The number of clamps 30 is the same as the number of collection bags 14. The number of clamps 30 may be greater than the number of collection bags 14. In this embodiment, each clamp 30 is connected to the second holding unit 50 via a connection cord 32. However, connecting the clamps 30 to the second holding unit 50 is not essential. The clamps may also be multiple pressing members provided on a door element rotatably connected to the mounting surface 52. In this case, when the door element is changed from an open state to a closed state, the multiple pressing members abut against the multiple tubes 12, respectively. This blocks all of the tubes 12. That is, in this case, all of the tubes 12 can be simultaneously changed from an open state to a closed state.

[0050] The liquid delivery device 100 is used as follows: The liquid delivery method according to this embodiment is carried out using the liquid delivery device 100.

[0051] In a preparation step before using the fluid delivery device 100, an operator joins the connection tube 12a extending from the medical bag 10 and the connection tube 12b extending from the collection bag 14 using, for example, a sterile joining device. The tube 12 is formed by joining the connection tube 12a and the connection tube 12b to each other.

[0052] The amount of liquid to be collected from the medical bag 10 to the collection bag 14 is predetermined. Hereinafter, this predetermined amount of liquid to be collected (the desired amount of liquid to be collected) will be referred to as the "predetermined amount." If the liquid delivery device 100 includes a time measurement unit 82 as the measurement unit 80, the operator will conduct an experiment in advance to determine the time from when the second holding unit 50 begins to descend until a predetermined amount of liquid is transferred to the collection bag 14. The time obtained from this experiment is determined to be the "set time." In this case, the relationship between the time elapsed since the second holding unit 50 begins to descend and the amount of liquid delivered from the medical bag 10 to the collection bag 14 is determined.

[0053] On the other hand, if the liquid delivery device 100 is equipped with a weight measurement unit 84 as the measurement unit 80, the operator checks in advance the weight of the liquid corresponding to the specified amount of liquid. The weight obtained in this way is determined as the "set weight."

[0054] As shown in Fig. 3, the liquid transfer method includes a first holding step, a second holding step, a transfer step, and a transfer stopping step. In the following, in addition to Fig. 3, Fig. 1, Fig. 4, and Fig. 5 will also be referred to as appropriate.

[0055] The following describes an embodiment in which the measurement unit 80 has a time measurement unit 82. In this case, the parameter is the elapsed time since the second holding unit 50 started to descend.

[0056] As shown in FIG. 3, in step S1, the worker performs a first holding step. In the first holding step, the medical bag 10 is held in the first holding part 40 as shown in FIG. 1. In addition, in step S2, the worker performs a second holding step. In the second holding step, the collection bag 14 is held in the second holding part 50. Hereinafter, a state in which the medical bag 10 is held in the first holding part 40, the collection bag 14 is held in the second holding part 50, and the second holding part 50 is located in the raised position shown in FIG. 1 is referred to as a "ready state." The raised position of the second holding part 50 is a position where no liquid flows between the medical bag 10 and the collection bag 14.

[0057] The first and second holding steps can be performed in any order, but because the weight of the medical bag 10 is greater than the weight of the collection bag 14, it is preferable to perform the first holding step before the second holding step.

[0058] In the ready state, the height position of the lower end of the first holder 40 and the height position of the second holder 50 are approximately the same. That is, the height position of the opening 11 of the medical bag 10 and the height position of the opening 15 of the collection bag 14 are approximately the same. Alternatively, the height position of the lower end of the second holder 50 is higher than the height position of the first holder 40. Therefore, the flow of liquid from the medical bag 10 toward the collection bag 14 is prevented. That is, the transfer of liquid from the medical bag 10 to the collection bag 14 is avoided. Hereinafter, the height position of the second holder 50 that does not cause the flow of liquid between the medical bag 10 and the collection bag 14 is referred to as the "flow stop position." Note that, to prevent unintended liquid flow from the medical bag 10 toward the collection bag 14, the tube 12 may be closed with the clamp 30 and the clamp 30 may be removed from the tube 12 immediately before pressing the operation button 71 to release the blockage.

[0059] Next, the worker presses (operates) the operation button 71. This operation starts the transfer process in step S3. Specifically, in the transfer process, the second holding unit 50 descends in step S31. In this case, the control unit 66 controls the drive unit 64 to lower the second holding unit 50. This causes the second holding unit 50 to start descending. The second holding unit 50 descends while being guided by the guide grooves 61, 62. As shown in FIG. 4, the second holding unit 50 stops when it descends to a predetermined lowered position (the lower end position of the movable range). The second holding unit 50 waits in the lowered position. Accordingly, the deflection of the tube 12 is released and the tube 12 extends in a substantially linear manner.

[0060] In this way, the second holding part 50 descends relative to the first holding part 40. As a result, the height position of the collection bag 14 becomes lower than the height position of the medical bag 10. Therefore, the liquid in the medical bag 10 flows through the tube 12 by gravity and then into the collection bag 14. In other words, the liquid in the medical bag 10 is transferred to the collection bag 14 via the tube 12.

[0061] In the transfer process, the measuring unit 80 measures a parameter for determining the amount of liquid transferred from the medical bag 10 to the collection bag 14. In this embodiment, the time measuring unit 82 measures the elapsed time from when the second holding unit 50 starts to descend. The measured elapsed time is displayed on the display 72.

[0062] In step S32, the operator checks the elapsed time displayed on the display 72. As shown in Fig. 3, if the elapsed time does not reach the set time (step S32: NO), step S32 is repeated.

[0063] If the operator recognizes that the elapsed time has reached the set time (step S32: YES), the process proceeds to step S4. Specifically, the operator presses (re-operates) the operation button 71. In response to this re-operation, the transfer stop process is initiated in step S4. Specifically, the drive unit 64 drives the second holding unit 50 to lift. Therefore, in step S41, the second holding unit 50 begins to lift. The second holding unit 50 lifts while being guided by the guide grooves 61, 62. Next, in step S42, the second holding unit 50 reaches and stops at the flow stop position shown in FIG. 5. This stops the flow of liquid from the medical bag 10 to the collection bag 14.

[0064] Before the second holder 50 reaches the flow stop position, i.e., while the second holder 50 is ascending, the flow of liquid from the medical bag 10 to the collection bag 14 continues. However, the amount of liquid flowing into the collection bag 14 during this period (ascending) is small. Since the amount of liquid collected into the collection bag 14 only needs to be equal to or greater than a specified amount, as long as it is not excessive, the flow of liquid into the collection bag 14 while the second holder 50 is ascending does not actually pose a problem. Alternatively, the set time may be determined in advance, taking into account the amount of liquid that will flow into the collection bag 14 while the second holder 50 is ascending.

[0065] In addition, even if the height position of the second holding part 50 is higher than the height position of the first holding part 40 in the ready state, when stopping the flow of liquid from the medical bag 10 to the collection bag 14, it is preferable to stop the lower end of the second holding part 50 at approximately the same height position as the first holding part 40. This prevents liquid from returning from the collection bag 14 to the medical bag 10. At this time, the tube 12 is in a bent state. The mounting surface 52 may be positioned above the lowest position of the bent tube 12. Even in this situation, the movement of liquid from the medical bag 10 to the collection bag 14 is suppressed.

[0066] When the measuring unit 80 has a weight measuring unit 84, the parameter is the weight of the liquid that has flowed into the second holding unit 50. This embodiment will be briefly described with reference to FIG.

[0067] In this embodiment, the operator also operates the operation button 71, causing the second holding unit 50 to begin descending. This initiates the transfer process. The weight measuring unit 84 begins measuring the weight at the same time as the second holding unit 50 begins descending. The indicator of the weight measuring unit 84 displays the weight of the liquid that has flowed into the collection bag 14. The weight of the liquid may also be displayed on the display 72. Thereafter, as in the above, the second holding unit 50 descends relative to the first holding unit 40, causing the liquid in the medical bag 10 to be transferred to the collection bag 14 via the tube 12.

[0068] In step S33, the operator checks the weight of the liquid displayed on the indicator (or display 72) of weight measuring unit 84. If the weight of the liquid does not reach the set weight (step S33: NO), step S33 is repeated.

[0069] On the other hand, if the weight of the liquid reaches the set weight (step S33: YES), the process proceeds to step S4, where the transfer stop step is carried out. An alarm may be sounded when the weight of the liquid reaches the set weight. Thereafter, in the same manner as above, when the operator operates the operation button 71 again, the second holding unit 50 starts to rise in step S41. Next, in step S42, the second holding unit 50 stops at the flow stop position as shown in FIG. 5.

[0070] As described above, there is no substantial problem with the inflow of liquid into the collection bag 14 that occurs while the second holding part 50 is being raised. Alternatively, the set weight may be determined in advance, taking into account the amount of liquid that will flow into the collection bag 14 that occurs while the second holding part 50 is being raised.

[0071] As described above, the fluid delivery device 100 makes it easy to deliver a specified amount of fluid from multiple medical bags 10 to multiple collection bags 14. Moreover, because a specified amount of fluid can be delivered from multiple medical bags 10 to multiple collection bags 14, work efficiency can be improved. This makes it possible to handle situations where culture tests are individually performed on fluids in large quantities of medical bags 10.

[0072] In this state, the operator clamps the clamp 30 around the tube 12 as shown in FIG. 5. As a result, the tube 12 is closed by the clamp 30. Therefore, the flow of liquid within the tube 12 is blocked. This reliably stops the transfer of liquid from the medical bag 10 to the collection bag 14. It also prevents the liquid from returning from the collection bag 14 to the medical bag 10. The operator then seals the tube 12 and cuts the tube 12 upstream of the sealed portion (the side closer to the medical bag 10). This separates the medical bag 10 from the collection bag 14.

[0073] This embodiment has the following advantages.

[0074] 1, the fluid delivery device 100 includes a first holder 40 that holds the medical bag 10 and a second holder 50 that holds the collection bag 14. The second holder 50 can be raised and lowered relative to the first holder 40 by an elevation mechanism 60. The fluid delivery device 100 also includes a measurement unit 80. The measurement unit 80 measures a parameter for determining the amount of fluid delivered from the medical bag 10 to the collection bag 14.

[0075] 4, the second holding part 50 is lowered, thereby starting the transfer of liquid from the medical bag 10 to the collection bag 14. This facilitates the transfer of liquid from the medical bag 10 to the collection bag 14. Furthermore, since the liquid transfer device 100 includes the measuring part 80, the operator can easily grasp the amount of liquid being transferred from the medical bag 10 to the collection bag 14.

[0076] Furthermore, since the amount of liquid to be sent can be managed by determining the parameters, it is possible to prevent the amount of liquid collected from the plurality of collection bags 14 from differing greatly from one another.

[0077] The fluid delivery device 100 includes an operation button 71. By operating the operation button 71, the second holding unit 50 can be lowered relative to the first holding unit 40. Furthermore, by operating the operation button 71 again, the second holding unit 50 can be raised relative to the first holding unit 40 to a position where the flow of fluid from the medical bag 10 to the collection bag 14 stops.

[0078] In one embodiment, the measurement unit 80 includes a time measurement unit 82. The time measurement unit 82 measures the elapsed time from when the second holding unit 50 starts to descend relative to the first holding unit 40.

[0079] By measuring the elapsed time, the amount of liquid transferred from the medical bag 10 to the collection bag 14 can be determined. Furthermore, by recognizing that the elapsed time has reached the set time, the operator can determine that the specified amount of liquid has been collected in the collection bag 14.

[0080] In another embodiment, the measuring unit 80 includes a weight measuring unit 84. The weight measuring unit 84 measures the weight of the collection bag 14 held in the second holding unit 50.

[0081] By measuring the weight of the collection bag 14, the amount of liquid transferred from the medical bag 10 to the collection bag 14 can be determined. In addition, by recognizing that the weight has reached the set weight, the operator can determine that a specified amount of liquid has been collected in the collection bag 14.

[0082] The liquid delivery device 100 includes a clamp 30. The clamp 30 closes the tube 12.

[0083] Closing the tube 12 with the clamp 30 reliably stops the flow of fluid from the medical bag 10 to the collection bag 14, thereby preventing excessive fluid from being transferred to the collection bag 14. It also prevents fluid from being transferred back from the collection bag 14 to the medical bag 10.

[0084] The clamp 30 is attached to the second holding part 50 via the connection cord 32. This prevents the clamp 30 from being lost.

[0085] The liquid transfer method includes a transfer step and a transfer stopping step. As can be seen by comparing FIGS. 1 and 4 , in the transfer step, the second holding unit 50 is lowered relative to the first holding unit 40. This lowering causes the liquid to flow from the medical bag 10 to the collection bag 14. In the transfer stopping step, the second holding unit 50 is raised relative to the first holding unit 40. The second holding unit 50 is raised relative to the first holding unit 40 to a height position at which the flow of the liquid from the medical bag 10 to the collection bag 14 stops. This causes the flow of the liquid from the medical bag 10 to the collection bag 14 to stop. In the transfer step, a parameter for determining the amount of liquid transferred from the medical bag 10 to the collection bag 14 is measured by the measuring unit 80.

[0086] In this way, the transfer of liquid from the medical bag 10 to the collection bag 14 can be started or stopped by lowering or raising the second holding part 50 relative to the first holding part 40. This makes it easy to transfer liquid from the medical bag 10 to the collection bag 14 and to stop the transfer.

[0087] In the above embodiment, the second holding unit 50 starts to move down or up based on the operator's operation of the operation button 71. Alternatively, the second holding unit 50 may start to move down or up based on a command from the control unit 66. In this case, the control unit 66 stores a program for executing the transfer process and transfer stop process shown in FIG. 3. When the operator presses the operation button 71, the control unit 66 issues a command signal in accordance with the program. This starts the second holding unit 50 moving down or up.

[0088] Specifically, when the measuring unit 80 has the time measuring unit 82, the control unit 66 executes control as follows: When the elapsed time since the second holding unit 50 started to descend reaches the set time (step S32 in FIG. 3: YES), the control unit 66 controls the drive unit 64 so that the second holding unit 50 rises relative to the first holding unit 40, thereby stopping the transfer of liquid from the medical bag 10 to the collection bag 14 (step S4 in FIG. 3).

[0089] On the other hand, when the measuring unit 80 has a weight measuring unit 84, the control unit 66 executes control as follows: When the weight of the liquid flowing into the collection bag 14 reaches the set weight (step S33 in FIG. 6: YES), the control unit 66 controls the drive unit 64 to raise the second holding unit 50 relative to the first holding unit 40, thereby stopping the transfer of the liquid from the medical bag 10 to the collection bag 14 (step S4 in FIG. 6).

[0090] In this way, the control unit 66 raises the second holding unit 50 based on the parameters acquired by the measurement unit 80, and stops the transfer of liquid from the medical bag 10 to the collection bag 14, thereby reducing the operational burden on the operator. In addition, the transfer of an excessive amount of liquid to the collection bag 14 is prevented.

[0091] Although the present disclosure has been described in detail, the present disclosure is not limited to the individual embodiments described above. Various additions, substitutions, modifications, partial deletions, etc. are possible in these embodiments without departing from the gist of the present disclosure or the spirit of the present disclosure derived from the content of the claims and their equivalents. These embodiments can also be implemented in combination. For example, in the above-described embodiments, the order of each operation and the order of each process are shown as examples and are not limited to these. The same applies when numerical values ​​or mathematical expressions are used in the description of the above-described embodiments. [Explanation of symbols]

[0092] 10...Medical bag 12...Tube 14...Collection bag 30...Clamp 40...First holding part 50...Second holding part 60... lifting mechanism 64... drive unit 66...control unit 70...operation unit 72...Display 80...Measuring unit 82...Time measurement section 84...Weight measurement section 100...liquid delivery device

Claims

1. A liquid delivery device for transferring a liquid in a medical bag to a collection container connected to the medical bag via a liquid delivery tube, a first holding portion that holds the medical bag; a second holder for holding the collection container; an elevation mechanism capable of raising and lowering the second holding unit relative to the first holding unit; a measuring unit that measures a parameter for determining the amount of the liquid transferred from the medical bag to the collection container; A liquid delivery device comprising:

2. The liquid delivery device according to claim 1 , wherein the lifting mechanism includes a drive unit that drives the second holding unit.

3. The liquid delivery device according to claim 2, further comprising an operating unit that is operated by an operator, When the operating unit is operated by the worker, the driving unit lowers the second holding unit relative to the first holding unit, When the operator operates the operating unit again, the drive unit raises the second holding unit relative to the first holding unit to a position where the flow of the liquid from the medical bag to the collection container stops.

4. 4. The liquid delivery device according to claim 3, wherein the measurement unit includes a time measurement unit that measures the elapsed time from when the second holding unit starts to descend relative to the first holding unit.

5. The liquid delivery device according to claim 4, further comprising a control unit that controls the drive unit, When the elapsed time reaches a preset time, the control unit controls the drive unit to raise the second holding unit relative to the first holding unit, thereby stopping the transfer of the liquid from the medical bag to the collection container.

6. 4. The liquid delivery device according to claim 3, wherein the measuring unit includes a weight measuring unit that measures the weight of the collection container held in the second holder.

7. The liquid delivery device according to claim 6, further comprising a control unit that controls the drive unit, A liquid delivery device in which, when the weight of the liquid transferred from the medical bag to the collection container reaches a set weight, the control unit controls the drive unit so that the second holding unit rises relative to the first holding unit, thereby stopping the transfer of the liquid from the medical bag to the collection container.

8. 8. The liquid delivery device according to claim 1, further comprising a clamp for closing the tube.

9. The liquid delivery device according to claim 8 , wherein the clamp is provided on the second holding portion.

10. A liquid transfer method for transferring a liquid in a medical bag to a collection container connected to the medical bag via a liquid transfer tube, comprising: a first holding step of holding the medical bag in a first holding part; a second holding step of holding the collection container in a second holding part; a transfer step of lowering the second holding part relative to the first holding part to cause the liquid to flow from the medical bag to the collection container; a transfer stopping step of raising the second holding part relative to the first holding part to stop the flow of the liquid from the medical bag to the collection container, In the transferring step, a parameter for determining the amount of the liquid transferred from the medical bag to the collection container is measured by a measuring unit.

11. 11. The liquid transfer method according to claim 10, wherein the measurement unit measures the elapsed time since the second holding unit started to descend relative to the first holding unit, and performs the transfer stopping step when the elapsed time reaches a preset time.

12. 11. The liquid transfer method according to claim 10, wherein the measurement unit measures the weight of the collection container held in the second holding unit, and performs the transfer stopping step when the weight reaches a set weight.

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