JP6019339B2 - Liquid supply device - Google Patents

Description

  The present invention relates to a liquid medicine supply device, and more particularly to a liquid medicine supply apparatus for supplying liquid medicine from a liquid medicine bottle containing a liquid medicine to a medication bottle.

  Conventionally, dispensing pharmacies and the like have been used to dispense liquid medicines that are liquid medicines. According to a prescription for the patient, one or more kinds of liquid medicines are sequentially injected into the medication bottles in predetermined amounts, and necessary excipients are injected to dispense liquid medicines.

  For example, Japanese Unexamined Patent Application Publication No. 2009-142381 (Patent Document 1) discloses a conventional technique related to a liquid medicine supply device for dispensing liquid medicine. In the above document, the position of the discharge port for discharging the liquid medicine to the prescription bottle in the supply pipe is set higher than the liquid level of the liquid medicine in the liquid medicine bottle, so that the liquid medicine from the supply pipe is A liquid medicine supply device that prevents dripping has been proposed.

JP 2009-142381 A

  In the liquid medicine supply device disclosed in the above-mentioned document, the liquid medicine present in the supply pipe when the driving of the supply pump is stopped by gravity is set by setting the position of the discharge port for discharging the liquid medicine to the prescription bottle. Dropping from the discharge port portion of the supply pipe is suppressed. However, even if this technique is applied, it is insufficient to prevent dripping of the liquid medicine from the supply pipe. Therefore, it is difficult to supply an accurate amount of liquid medicine to the prescription bottle due to the influence of the dropped liquid medicine, which causes unnecessary liquid medicine to drip from the supply pipe and stain the device. Problems still remain, such as adversely affecting the operation of the device, dripping from the supply tube into the medication bottle and causing contamination of the medication in the medication bottle.

  This invention is made | formed in view of said subject, The main objective is to provide the liquid agent supply apparatus which can suppress dripping of the liquid agent from a supply pipe more reliably.

  A liquid medicine supply device according to the present invention is a liquid medicine supply apparatus that selectively supplies liquid medicine from a plurality of liquid medicine bottles containing a liquid medicine to a medication bottle, and dispenses from each of the plurality of liquid medicine bottles. A pump for transferring the liquid medicine to the bottle and a supply pipe through which the liquid medicine going from the liquid medicine bottle to the medication bottle flows. The supply tube has a first portion including one end disposed opposite the upper opening of the medication bottle and a second portion connected to the first portion. The liquid medicine supplied to the medication bottle flows out from the supply pipe via one end. The second part forms an upward flow of liquid medicine toward the first part. The first part forms a downward flow of liquid medicine to one end.

  Preferably, in the liquid medicine supply device, the first part includes a first arm part, the second part includes a second arm part, and the first arm part and the second arm part include the first arm part and the first arm part. The second arm part forms an upward flow of the liquid medicine toward the connection part, and the first arm part causes the downward flow of the liquid medicine to reach one end. Form.

  Preferably, in the liquid medicine supply device, the supply pipe includes a bending member, and the bending member includes a first arm portion, a second arm portion, and a connecting portion that connects the first arm portion and the second arm portion. The connecting portion is disposed above the first arm portion and the second arm portion, the first portion includes the first arm portion, and the second portion includes the second arm portion.

  Preferably, in the liquid medicine supply device, the pump reverses the liquid medicine from the first part to the second part after the supply of the liquid medicine to the medication bottle is completed.

  Preferably, the liquid medicine supply apparatus includes an air injection unit that injects air to one end.

  According to the liquid medicine supply device of the present invention, dripping of the liquid medicine from the supply pipe can be more reliably suppressed.

It is a perspective view which shows the structure of the liquid medicine supply apparatus of one embodiment of this invention. It is a front view of the liquid medicine supply apparatus shown in FIG. It is sectional drawing of the liquid medicine supply apparatus which follows the III-III line | wire shown in FIG. It is sectional drawing of the liquid medicine supply apparatus which follows the IV-IV line | wire shown in FIG. It is sectional drawing of the liquid medicine supply apparatus which follows the VV line shown in FIG. It is the schematic which shows the whole structure of a supply pipe | tube. It is a perspective view which shows the connection part of a tube and a supply nozzle. It is a front view which shows the connection part of a tube and a supply nozzle. It is a side view which shows the connection part of a tube and a supply nozzle. It is sectional drawing which follows the XX line shown in FIG. It is an internal perspective view which shows the connection part of a tube and a supply nozzle. It is a schematic diagram of an air injection part. It is a flowchart which shows an example of the control method of a liquid medicine supply apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is a perspective view showing a configuration of a liquid medicine supply device 1 according to an embodiment of the present invention. FIG. 2 is a front view of the liquid medicine supply apparatus 1 shown in FIG. FIG. 3 is a cross-sectional view of the liquid medicine supply device 1 taken along line III-III shown in FIG. FIG. 4 is a cross-sectional view of the liquid medicine supply device 1 along the line IV-IV shown in FIG. FIG. 5 is a cross-sectional view of the liquid medicine supply apparatus 1 along the line VV shown in FIG. The liquid medicine supply device 1 according to the present embodiment is used for dispensing the liquid medicine 5 which is a liquid medicine from the liquid medicine bottle 23 containing the liquid medicine 5 to the medication bottle 2 in accordance with a prescription for the patient. It is done.

  The liquid medicine supply device 1 includes a liquid medicine supply unit 3 that supplies the liquid medicine 5 from the liquid medicine bottle 23 to the medication bottle 2, and a weight detection unit 4 that detects the weight of the liquid medicine 5 contained in the medication bottle 2. Prepare. From the weight of the liquid medicine 5 detected by the weight detection unit 4 and the specific gravity of the liquid medicine 5, the volume of the liquid medicine 5 supplied to the prescription bottle 2 is calculated. The liquid medicine supply unit 3 is controlled so that a liquid medicine 5 having a predetermined volume according to the prescription is supplied to the prescription bottle 2. The liquid medicine supply unit 3 and the weight detection unit 4 are provided in the housing 6. The housing | casing 6 is formed in a rectangular parallelepiped shape, and is installed in the horizontal installation surface in the standing state.

  A support frame 8 is provided inside the housing 6. The support frame 8 is disposed between the bottom plate 9 of the housing 6 and the top plate 10 of the housing 6, and specifically is disposed near the top plate 10 of the housing 6. The internal space of the housing 6 is partitioned by the support frame 8 into an upper space 11 above the support frame 8 and a lower space 12 below the support frame 8. A touch panel 14 and printers 17 a and 17 b are disposed on the front surface portion 13 of the housing 6. Further, a lower opening 15 that connects the lower space 12 and the outside of the housing 6 is formed in the front surface portion 13.

  The lower opening 15 is formed between the left and right side portions 16 a and 16 b in the front surface portion 13 of the housing 6. On the upper side of the lower opening 15 between the left and right side portions 16a, 16b, a curved plate-like front cover portion 18 that partitions the lower space 12 and the outside of the housing 6 is disposed. The front cover portion 18 is formed of a transparent material so that the lower space 12 can be visually recognized from the outside on the front side of the housing 6. The front cover portion 18 is attached to one of the left and right side portions 16a and 16b via a hinge, and is provided so as to be rotatable around the axis of the hinge. As a result, the front cover portion 18 can be opened and closed. Yes.

  The liquid medicine supply unit 3 includes a rotating drum 21 that is a rotating body that is disposed in the lower space 12 and is rotatably provided about an axis perpendicular to the support frame 8 (hereinafter referred to as “drum axis”). The liquid medicine supply unit 3 is also provided on the rotary drum 21 and drives each pump 24 with a plurality of pumps 24 for transferring liquid medicine from a plurality of liquid medicine bottles 23 containing the liquid medicine 5 to the prescription bottle 2. And a pump drive unit 25. Each pump 24 may be a tube pump.

  The rotary drum 21 includes a pump holder 31 that holds each pump 24 and a liquid bottle holder 32 that holds each liquid bottle 23 in an upright state so that the opening portion opens upward. The liquid medicine bottle holder 32 is provided below the pump holder 31 and is formed in an annular flat plate shape in plan view. Each pump 24 is arranged in the pump holding body 31 at intervals in the circumferential direction centering on the drum axis (hereinafter referred to as “drum circumferential direction”). In the liquid medicine bottle holder 32, each liquid medicine bottle 23 is arranged at intervals in the drum circumferential direction.

  In the present embodiment, the number of liquid medicine bottles 23 and pumps 24 mounted on the rotating drum 21 can be arbitrarily changed according to the purpose. Different liquid medications 5 may be accommodated in each of the plurality of liquid medication bottles 23. The same kind of liquid 5 having a high prescription frequency may be accommodated in a plurality of liquid bottles 23. Or excipient | fillers, such as a regular water and a simple syrup, may be accommodated in the 1 or several liquid medication bottle 23. FIG.

  The pump drive unit 25 selectively drives each pump 24 to selectively supply the liquid medicine 5 from the plurality of liquid medicine bottles 23 to the medication bottle 2. A connecting member 42 is fixed to the tip of the drive shaft 41 that is rotationally driven by the pump drive unit 25. A connected member 44 connected to the connecting member 42 is fixed to the rotating shaft 43 of the rotor of each pump 24. By connecting the connecting member 42 and the connected member 44, the rotational force is transmitted to the pump 24. The pump 24 is configured to be driven for each pump 24 in conjunction with the rotation of the rotary drum 21.

  The rotating drum 21 can smoothly rotate with respect to the support frame 8 in a disconnected state where the connecting member 42 is not connected to the connected member 44. By rotating the rotating drum 21 in the disconnected state, the rotating drum is moved to a position where the connected member 44 of the specific pump 24 selected based on the prescription information input to the liquid medicine supply device 1 faces the connecting member 42. 21 is moved. After the rotating drum 21 is rotated, the connecting member 42 is switched to a connected state in which the connecting member 42 is connected to the connected member 44. Thereby, the selected specific pump 24 can be driven, and the liquid medicine 5 supplied from the desired liquid medicine bottle 23 can be dispensed into the prescription bottle 2. In addition, although the connection member 42 and the to-be-connected member 44 are both comprised with the gear, as long as motive power can be transmitted, what kind of structure may be sufficient.

  A plurality of liquid medicine bottles 23 are mounted on the liquid medicine bottle holder 32 of the rotating drum 21. A plurality of cups 78 for holding the liquid medicine bottle 23 is attached to the upper side of the liquid medicine bottle holding body 32. The cup 78 is formed in a hollow cylindrical shape with a bottom. The cup 78 functions as a holder that holds the liquid medicine bottle 23. The liquid medicine bottle 23 is accommodated in the cup 78, and the bottom of the liquid medicine bottle 23 is held by the cup 78.

  A rotation drive unit 71 that generates a rotational force is disposed below the liquid medicine bottle holder 32. The rotation driving unit 71 rotates the liquid medicine bottle 23 along the center line of the liquid medicine bottle 23. With the rotation of the liquid medicine bottle 23, the liquid medicine 5 accommodated in the liquid medicine bottle 23 passes through the inside of the liquid medicine bottle 23 along the rotation direction of the liquid medicine bottle 23, and the cylinder of the liquid medicine bottle 23. Flow in the circumferential direction of the shaped side. By generating a flow of the liquid medicine 5 accommodated in the liquid medicine bottle 23, the liquid medicine 5 is stirred inside the liquid medicine bottle 23.

  The pump holder 31 of the rotating drum 21 is provided with a pump 24 corresponding to each of the plurality of liquid medicine bottles 23. A nozzle mounting plate 53 that is an annular flat plate is provided at the lower end of the pump holder 31. The nozzle mounting plate 53 is disposed above the liquid medicine bottle holder 32. The nozzle mounting plate 53 and the liquid medicine bottle holder 32 are parallel to each other, and are configured to be rotatable around the drum axis on the horizontal plane together with the rotating drum 21. By the rotation of the rotating drum 21, the plurality of liquid medicine bottles 23, the pump 24, and the supply nozzle 36 are also integrally rotated in the horizontal direction.

  The supply nozzle 36 is mounted on the same circumference of the outer periphery of the nozzle mounting plate 53. The supply nozzles 36 are arranged on the nozzle mounting plate 53 at equal intervals in the drum circumferential direction on a virtual circle centered on the drum axis. An upper opening 2 </ b> A is formed in the medication bottle 2, and the plurality of supply nozzles 36 are configured such that the supply port 36 </ b> A can move relative to the upper opening 2 </ b> A of the medication bottle 2. As the supply port 36A of the supply nozzle 36 moves relative to the upper opening 2A of the prescription bottle 2, one of the plurality of supply ports 36A is sequentially arranged opposite to the upper opening 2A.

  The supply nozzle 36 is disposed to be inclined at a predetermined angle with respect to the drum axis. The liquid medicine 5 flowing out from the supply port 36 </ b> A of the supply nozzle 36 is supplied into the prescription bottle 2 via the upper opening 2 </ b> A of the prescription bottle 2. Since the supply nozzle 36 is inclined with respect to the drum axis, the liquid 5 injected into the prescription bottle 2 flows along the inner peripheral side wall of the prescription bottle 2. Thereby, foaming of the liquid medication 5 inside the prescription bottle 2 can be prevented. A mounting portion 55 is fixed on the upper side of the nozzle mounting plate 53. The supply nozzle 36 is provided so as to be arbitrarily detachable from the attachment portion 55, and is attached to the nozzle attachment plate 53 with the attachment portion 55 interposed therebetween.

  The weight detection unit 4 is disposed in the lower opening 15. The weight detection unit 4 is an electronic balance 45, a casing 46 that houses the electronic balance 45, and is placed and fixed on the electronic balance 45, and the medication bottle 2 stands up so that the upper opening 2A opens upward. And a medication bottle holder 47 to be held. The electronic balance 45 detects the weight of the liquid medicine 5 supplied to the medication bottle 2. When the weight of the liquid medicine 5 reaches a predetermined value, the liquid medicine supply unit 3 stops driving the pump 24 and stops supplying the liquid medicine 5 to the prescription bottle 2. The electronic balance 45 may be of any type such as a tuning fork type, a load cell type, or an electromagnetic type. The casing 46 is provided in a lower portion between the left and right side portions 16 a and 16 b in the front surface portion 13 of the housing 6. The medication bottle holder 47 includes a placement table 48 on which the medication bottle 2 is placed, and a holder 49 that is provided on the placement table 48 and holds the medication bottle 2.

  The weight detection unit 4 is moved up and down by a lifting device 50 as a driving unit shown in FIG. The lifting device 50 moves the weight detection unit 4 in the vertical direction so that it can be positioned at two positions, the initial position and the supply position, and is mounted on the mounting table 48 of the weight detection unit 4 accordingly. The prepared medication bottle 2 is moved. The initial position is a position for installing the medication bottle 2 on the mounting table 48 of the liquid medicine supply apparatus 1. The supply position is a position for supplying the liquid medicine 5 to the prescription bottle 2 by bringing the prescription bottle 2 and the supply nozzle 36 closer than the initial position. By the elevating device 50, the medication bottle 2 reciprocates between the outside and the inside of the housing 6 of the liquid medicine supply device 1 so as to reciprocate between the initial position and the supply position.

  FIG. 6 is a schematic diagram showing the overall configuration of the supply pipe 60. The supply pipe 60 forms a path through which the liquid medicine 5 flows from the liquid medicine bottle 23 toward the medication bottle 2, and includes the supply nozzle 36, the tube 34, and the elbow member 65 described above. The tube 34 has a suction end 34a that is one end and a discharge end 34b that is the other end. The suction end 34 a is an end portion on the side where the liquid medicine 5 is sucked into the tube 34 when the liquid medicine 5 is supplied from the liquid medicine bottle 23 to the prescription bottle 2. The discharge end 34 b is an end portion on the side of discharging the liquid medicine 5 from the tube 34 when supplying the liquid medicine 5 from the liquid medicine bottle 23 to the prescription bottle 2. The elbow member 65 connects the tube 34 and the supply nozzle 36.

  The suction end 34 a opened by the tube 34 is arranged inside the liquid medicine bottle 23 and is immersed in the liquid medicine 5 in the liquid medicine bottle 23. The discharge end 34 b of the tube 34 is attached to the elbow member 65. The supply port 36 </ b> A having an open end of the supply nozzle 36 forms one end of the supply pipe 60 on the prescription bottle 2 side. The suction end 34a of the tube 34 forms the other end of the supply pipe 60 on the liquid medicine bottle 23 side. When the liquid medicine 5 in the liquid medicine bottle 23 is supplied to the prescription bottle 2, the supply port 36 </ b> A of the supply nozzle 36 is arranged to face the upper opening 2 </ b> A of the prescription bottle 2.

  The pump 24 is used as a power source for sucking the liquid medicine 5 in the liquid medicine bottle 23 toward the supply nozzle 36. When the pump 24 is a tube pump, an intermediate portion of the tube 34 between the suction end 34 a and the discharge end 34 b is inserted into the pump 24 and is detachably gripped by the pump 24.

  By driving the pump 24, the liquid medicine 5 in the liquid medicine bottle 23 is sucked into the supply pipe 60 from the suction end 34a, flows through the inside of the supply pipe 60, and passes through the supply port 36A of the supply nozzle 36. It flows out from the supply pipe 60. The liquid medicine 5 flowing out from the supply pipe 60 flows into the medication bottle 2 via the upper opening 2 </ b> A of the medication bottle 2. Thus, the liquid medicine 5 is transferred from each of the plurality of liquid medicine bottles 23 to the prescription bottle 2 via the supply pipe 60, and the liquid medicine 5 is supplied to the prescription bottle 2. By selecting a combination of the liquid medicine bottle 23 and the supply pipe 60, different types of liquid medicine 5 or excipients are selectively supplied to the medication bottle 2.

  Hereinafter, the configuration and arrangement of the supply pipe 60 will be described in detail. FIG. 7 is a perspective view showing a connecting portion between the tube 34 and the supply nozzle 36. FIG. 8 is a front view showing a connecting portion between the tube 34 and the supply nozzle 36. FIG. 9 is a side view showing a connecting portion between the tube 34 and the supply nozzle 36. 10 is a cross-sectional view taken along line XX shown in FIG. FIG. 11 is an internal perspective view showing a connecting portion between the tube 34 and the supply nozzle 36. 7 to 11, only a part of the tube 34 in the vicinity of the discharge end 34 b is shown, and most of the tube 34 is not shown.

  The elbow member 65 as an example of the bending member has a 90 ° elbow shape as clearly shown in FIGS. 10 and 11. The elbow member 65 includes a straight tubular first arm portion 66, a straight tubular second arm portion 67 extending perpendicular to the extending direction of the first arm portion 66, and the first arm portion 66 and the second arm. And a bent portion 68 connecting the portion 67. The bent portion 68 has a function as a connecting portion that connects the first arm portion 66 and the second arm portion 67. An elbow member 65 having a 90 ° elbow shape is formed by bending the pipe line at the bent portion 68 and providing the first arm portion 66 and the second arm portion 67 at both ends of the bent portion 68.

  In addition, the 1st arm part 66, the 2nd arm part 67, and the bending part 68 of the elbow member 65 are the structures which point to each part of the elbow member 65, Comprising: These are not intended that they are separate members. . That is, the elbow member 65 may be formed by bending a straight tubular member, for example, or may be formed as a resin molded product. In such a case, the first arm portion 66 and the second arm portion are formed. 67 and the bent portion 68 are integrally formed.

  Further, the shape of the elbow member 65 is not limited to the 90 ° elbow shape, although a commercially available product can be used and the cost can be reduced if the 90 ° elbow shape shown in the figure is used. Each extending direction of the first arm portion 66 and the second arm portion 67 may form an arbitrary angle such as 45 °, for example. The bent portion 68 may not have a bent shape but may have a shape that bends gently. The first arm portion 66 and the second arm portion 67 may not have a straight tube shape but may have a bent tube shape. In this case, one of the connecting portions that connects the first arm portion 66 and the second arm portion 67. A part or all may be a straight tube. The elbow member 65 may have any shape as long as it can change the flow direction of the liquid medication 5 passing through the elbow member 65.

  The end portion of the first arm portion 66 that engages with the supply nozzle 36 is arranged on the lower side in the vertical direction with respect to the end portion of the first arm portion 66 on the bent portion 68 side, and the second arm portion 67. The open end portion of the second arm portion 67 is disposed on the lower side in the vertical direction with respect to the end portion on the bent portion 68 side. For example, the second arm portion 67 may be arranged such that the extending direction thereof has an angle larger than 0 ° with respect to the horizontal direction. In addition, the angle formed by the extending direction of the first arm portion 66 with respect to the horizontal direction is such that when the liquid 5 flowing out from the supply port 36A of the supply nozzle 36 is injected into the prescription bottle 2, the liquid 5 is discharged into the prescription bottle. The angle may be set to a large angle so as not to scatter from 2.

  A supply nozzle 36 is attached to the outer peripheral side of the first arm portion 66 of the elbow member 65. By inserting the first arm portion 66 into the supply nozzle 36, the supply nozzle 36 and the elbow member 65 are engaged with each other. A tube 34 is attached to the outer peripheral side of the second arm portion 67 of the elbow member 65. By inserting the second arm portion 67 into the tube 34, the tube 34 and the elbow member 65 are engaged with each other.

  The elbow member 65 is held by a holder member 80. The holder member 80 is a resin molded product. An elbow fixing hole 81 for fixing the elbow member 65 is formed inside the holder member 80. The elbow fixing hole 81 is formed when a part of the surface of the holder member 80 is recessed. The elbow fixing hole 81 is formed in a shape corresponding to the elbow member 65, that is, a shape capable of accommodating the elbow member 65 inside.

  Since the surface of the holder member 80 is recessed and the elbow fixing hole 81 is formed, the elbow member 65 is moved by moving the elbow member 65 in a direction intersecting (typically orthogonal) with the extending direction of the elbow member 65. Can be attached to the elbow fixing hole 81, or the elbow member 65 can be removed from the elbow fixing hole 81. Thus, the elbow member 65 can be easily attached to and detached from the elbow fixing hole 81.

  With the elbow member 65 attached to the holder member 80, at least a portion of the first arm portion 66 is disposed outside the holder member 80, and at least a portion of the second arm portion 67 is disposed outside the holder member 80. The The holder member 80 has a nozzle insertion hole 83 having a diameter larger than that of the elbow fixing hole 81. The elbow fixing hole 81 and the nozzle insertion hole 83 are formed concentrically. When the supply nozzle 36 is attached to the first arm portion 66, a part of the supply nozzle 36 is disposed inside the nozzle insertion hole 83.

  The tube 34 is disposed outside the holder member 80 in a state where the tube 34 is attached to the outer peripheral side of the second arm portion 67. The holder member 80 is formed so that the discharge end 34 b of the tube 34 attached to the second arm portion 67 contacts the outer surface of the holder member 80. That is, the elbow fixing hole 81 is formed to have a diameter smaller than the outer diameter of the discharge end 34 b of the tube 34.

  The holder member 80 is provided with a slide portion 82 for fixing the elbow member 65 into the elbow fixing hole 81. A part of the outer surface of the holder member 80 is formed with a groove shape that accommodates the slide portion 82 and allows the slide portion 82 to slide relative to the holder member 80. Along the extending direction of the groove shape, the slide portion 82 is movable in the direction of a double arrow shown in FIG. The slide portion 82 is formed of, for example, a metal material having a rigidity higher than that of the holder member 80.

  The slide portion 82 is formed so as to be positioned at a position covering the elbow fixing hole 81 by, for example, a ball-type latch. By positioning the slide part 82, the elbow member 65 accommodated in the elbow fixing hole 81 is covered by the slide part 82. Thereby, the elbow member 65 is positioned with respect to the holder member 80, and in addition, the elbow member 65 is prevented from being naturally removed from the elbow fixing hole 81.

  When attaching the elbow member 65 to the holder member 80, first, the elbow member 65 is arranged inside the elbow fixing hole 81. At this time, the tube 34 may or may not be attached to the elbow member 65, but the supply nozzle 36 is not attached to the elbow member 65. After the elbow member 65 is received in the elbow fixing hole 81, the slide portion 82 is slid and the elbow member 65 is positioned by the slide portion 82.

  Thereafter, the supply nozzle 36 is brought close to the elbow member 65 along the extending direction of the first arm portion 66 of the elbow member 65, the first arm portion 66 is inserted into the supply nozzle 36, and the supply nozzle 36 is further connected to the holder member 80. This is inserted into the nozzle insertion hole 83. The inner diameter of the nozzle insertion hole 83 is slightly smaller than the outer diameter of the supply nozzle 36. The supply nozzle 36 is formed of a material that is flexible and easily elastically deformed, such as rubber or synthetic resin. Therefore, when the supply nozzle 36 is inserted into the nozzle insertion hole 83, the supply nozzle 36 is elastically deformed so that the outer diameter thereof is slightly reduced, and the supply nozzle 36 is in close contact with the inner wall of the nozzle insertion hole 83.

  As a result, the supply nozzle 36 is firmly attached to the holder member 80, so that the displacement of the supply nozzle 36 and the removal from the elbow member 65 are suppressed. In addition, since the first arm portion 66 of the elbow member 65 is inserted into the supply nozzle 36, the supply nozzle 36 is reliably positioned with respect to the holder member 80, and at the same time, the elbow member 65 is also attached to the holder member 80. Positioning is performed reliably.

  The holder member 80 is fixed to an interposed member 86 made of a metal material. The holder member 80 is formed with a bolt insertion hole 84 that penetrates the holder member 80 in the thickness direction. By inserting the fixing bolt 89 into the bolt insertion hole 84 side and screwing the nut into the fixing bolt 89, the holder member 80 and the interposition member 86 are fixed integrally. A plurality of bolt insertion holes 84 are formed in the holder member 80, and the holder member 80 and the interposition member 86 are more reliably fixed by fixing the holder member 80 and the interposition member 86 at a plurality of locations, and The positional shift of the holder member 80 with respect to the interposed member 86 can be suppressed.

  The interposition member 86 has a flat plate-shaped leg portion 87. As shown in FIG. 9, the leg portion 87 is provided so as to be separated from the main body portion of the interposition member 86 fixed to the holder member 80. The leg portion 87 is formed in a long plate shape extending in one direction and having a longitudinal direction in the direction.

  The interposition member 86 is attached to the attachment portion 55 by engaging the leg portion 87 with the attachment portion 55 fixed to the nozzle attachment plate 53. The interposition member 86 is attached to the attachment portion 55 by fitting the leg portion 87 into the receiving hole formed in the attachment portion 55, and the interposition member 86 is removed from the attachment portion 55 by removing the leg portion 87 from the reception hole. It is. By attaching the interposition member 86 to the attachment portion 55, the supply nozzle 36 is attached to the rotary drum 21, and the supply nozzle 36 can rotate integrally with the rotary drum 21.

  When the interposition member 86 is attached to the attachment portion 55, the interposition member 86 is arranged so that the longitudinal direction of the leg portion 87 is parallel to the direction of the drum axis. The extending direction of the receiving hole formed in the mounting portion 55 is parallel to the direction of the drum axis, and the leg portion 87 extends into the receiving hole by inserting the leg portion 87 into the receiving hole along the extending direction of the receiving hole. The interposition member 86 is arranged so that the direction is parallel to the direction of the drum axis.

  As shown in FIG. 11, the extending direction of the first arm portion 66 and the second arm portion 67 of the elbow member 65 is inclined with respect to the extending direction of the leg portion 87. Since the liquid medicine supply device 1 is usually placed on a flat floor surface, the direction of the drum axis is typically the vertical direction. Therefore, when the leg portion 87 is attached to the attachment portion 55, the extending directions of the first arm portion 66 and the second arm portion 67 of the elbow member 65 are inclined with respect to the vertical direction. Therefore, the flow of the liquid medicine 5 moving from the liquid medicine bottle 23 toward the prescription bottle 2 forms an upward flow upward and a downward flow downward in the elbow member 65.

  As shown in FIG. 10, the supply pipe 60 has a first portion 61 and a second portion 62. The first portion 61 includes the supply port 36A of the supply nozzle 36, and is closest to the prescription bottle 2 in the supply pipe 60 from the supply port 36A to the bent portion 68 via the first arm portion 66 of the elbow member 65. Part. The second portion 62 is a part of the supply pipe 60 connected to the first portion 61 that extends from the bent portion 68 to the vicinity of the end including the discharge end 34 b of the tube 34 via the second arm portion 67.

  When the leg portion 87 is inserted into the receiving hole of the attachment portion 55 and the supply pipe 60 is attached to the rotary drum 21 with the interposition member 86 and the holder member 80 interposed, the first arm portion 66 and the second arm portion 66 of the elbow member 65 are attached. The arm portion 67 is inclined with respect to the vertical direction. Therefore, the liquid medicine 5 transferred from the liquid medicine bottle 23 to the prescription bottle 2 forms a flow that rises when passing through the second portion 62, and forms a flow that goes down when passing through the first portion 61. The first portion 61 forms a downward flow of the liquid medicine 5 that reaches the supply port 36 </ b> A of the supply nozzle 36. The second part 62 forms an upward flow of the liquid medicine 5 toward the first part 61.

  Of the elbow member 65, the bent portion 68 is disposed at the highest position in the vertical direction, and the bent portion 68 is disposed above the first arm portion 66 and the second arm portion 67. The first arm portion 66 of the elbow member 65 is included in the first portion 61. The second arm portion 67 of the elbow member 65 is included in the second portion 62. Therefore, the flow of the liquid medicine 5 from the tube 34 to the bent portion 68 via the second arm portion 67 becomes an upward flow, and the supply port 36A of the supply nozzle 36 from the bent portion 68 via the first arm portion 66. The flow of the liquid medicine 5 is a downward flow.

  In the first part 61 and the second part 62, the flow direction of the liquid medicine 5 with respect to the horizontal direction is set. Thereby, in the supply pipe 60, the path through which the liquid medicine 5 can descend toward the supply port 36 </ b> A of the supply nozzle 36 that forms one end of the supply pipe 60 is limited to the first portion 61 only. Of the liquid medication 5 present inside the supply pipe 60, the liquid medication 5 flowing out from the supply port 36 </ b> A by the action of gravity when the pump 24 is stopped is limited to the liquid medication 5 inside the first portion 61.

  Therefore, dripping of the liquid medicine 5 in the supply pipe 60 from the supply port 36A when the supply of the liquid medicine 5 to the prescription bottle 2 is completed and the pump 24 is stopped can be suppressed. In the configuration of the conventional supply pipe 60, the second portion 62 where the liquid medicine 5 flowing toward the supply port 36 </ b> A becomes an upward flow is not connected to the first portion 61, and time elapses after the pump 24 is stopped. At the same time, the amount of the liquid medicine 5 that naturally falls toward the supply port 36A was somewhat large. Therefore, it is difficult to avoid dripping of the liquid medicine 5 from the supply port 36A.

  On the other hand, the supply pipe 60 of the present embodiment has a first part 61 that is a part closest to the supply port 36 </ b> A and a second part 62 that is a part connected to the first part 61. The flow direction in the vertical direction of the liquid medicine 5 flowing in the supply pipe 60 changes between the inside of the first portion 61 and the inside of the second portion 62. Thereby, the liquid medicine 5 that can flow toward the supply port 36A by the action of gravity is limited to only the liquid medicine 5 that exists inside the first portion 61 by adhering to the elbow member 65 or the inner wall of the supply nozzle 36. can do. By reducing the amount of liquid 5 toward the supply port 36A according to gravity, the dripping of the liquid 5 from the supply port 36A can be more reliably suppressed.

  By shortening the extending length of the first portion 61, it is desirable because the amount of the liquid medicine 5 remaining in the first portion 61 can be further reduced. For example, the dimension of each component of the supply pipe 60 may be determined so that the extension length of the first portion 61 is shorter than the extension length of the second portion 62.

  FIG. 12 is a schematic diagram of the air injection unit 90. As shown in FIG. 12, the liquid medicine supply device 1 of the present embodiment further includes an air injection unit 90 that sprays air from the outside to the supply port 36 </ b> A of the supply nozzle 36. When the liquid medicine 5 remains in the supply port 36 </ b> A, the liquid droplets of the liquid medicine 5 are removed from the supply port 36 </ b> A by the air jet 92 ejected from the air injection unit 90.

  Even if the flow direction of the liquid medicine 5 in the supply pipe 60 is defined by the first part 61 and the second part 62 described above, the liquid medicine 5 remaining on the inner wall surface of the first part 61 still falls to the supply port 36A side. Then, it tries to collect in the supply port 36A. When the liquid medicine 5 that accumulates in the supply port 36A increases, droplets of the liquid medicine 5 fall from the supply port 36A. In view of this, the air injection unit 90 is provided, and the liquid agent 5 collected in the supply port 36A by the air jet 92 is removed from the supply port 36A, so that an unintended drop of the liquid agent 5 from the supply port 36A is more reliably prevented. Can be suppressed.

  A plate-shaped receiving member 91 is provided at a position where the supply nozzle 36 is interposed between the air injection unit 90 and the air injection unit 90. The receiving member 91 is disposed downstream of the supply port 36 </ b> A along the flow of the air jet 92. By receiving the droplet 93 scattered from the supply port 36A by the receiving member 91, it is ensured that the droplet 93 blown off from the supply port 36A by the air jet 92 adheres to the other components of the liquid medicine supply device 1. It can be avoided.

  Next, the control in the case of dispensing by supplying the liquid 5 from the liquid bottle 23 to the prescription bottle 2 will be described. FIG. 13 is a flowchart showing an example of a control method of the liquid medicine supply device 1.

  First, in step (S10), the prescription bottle 2 is set on the mounting table 48 in the initial position for setting the prescription bottle 2 on the mounting table 48, and the touch panel 14 is operated to apply the liquid medicine 5 to the prescription bottle 2. When a command to start the supply is issued, a control signal is transmitted to the lifting device 50. When the lifting device 50 moves the weight detection unit 4 upward, the medication bottle 2 is raised. The weight detection unit 4 moves upward until it reaches a supply position where the liquid medication 5 is supplied to the prescription bottle 2.

  Next, in the step (S20), the rotary drum 21 is rotated, and the liquid medicine bottle 23 placed on the liquid medicine bottle holder 32 attached to the rotary drum 21 is moved in the horizontal direction. Due to the rotation of the rotary drum 21, the liquid medicine bottle 23 containing the liquid medicine 5 or excipient to be supplied next to the prescription bottle 2 and the supply port 36 </ b> A of the supply nozzle 36 are included in the liquid medicine supply device 1. It is arranged on the forefront side. By arranging the liquid medicine bottle 23 on the front side of the apparatus, the operator who dispenses the liquid medicine 5 visually confirms the type of the liquid medicine 5 to be dispensed from the front of the liquid medicine supply apparatus 1. Can do.

  When the movement of the liquid medicine bottle 23 is completed, the pump 24 corresponding to the selected liquid medicine bottle 23 is selectively driven by the pump drive unit 25 in the next step (S30). Thereby, a predetermined amount of the liquid medicine 5 in the liquid medicine bottle 23 is supplied to the prescription bottle 2 via the supply pipe 60.

  After the supply of the liquid medication 5 to the prescription bottle 2 is completed, the liquid medication 5 is caused to flow backward from the first portion 61 of the supply pipe 60 to the second portion 62 by reversely rotating the pump 24 in the step (S40). The liquid medicine 5 remaining in is moved to the second portion 62. Thereby, the quantity of the liquid medicine 5 which exists in the 1st part 61 can be reduced, and it can further suppress that the liquid medicine 5 in the 1st part 61 moves to the supply port 36A by gravity. At this time, if the supply port 36A of the supply nozzle 36 is sealed and the internal space of the supply nozzle 36 can be depressurized, the remaining amount of the liquid medicine 5 in the first portion 61 can be more efficiently reduced.

  Subsequently, in the step (S50), it is determined whether or not the supply of the liquid 5 (and the excipient if necessary) to the medication bottle 2 is completed and the dispensing is completed. When the supply of the liquid medicine 5 is not completed, the process returns to the step (S20), and the liquid medicine bottle 23 in which the liquid medicine 5 to be supplied next is accommodated and the supply port 36A of the supply nozzle 36 are the front side of the apparatus. The rotating drum 21 is rotated so as to be disposed at the position. When the supply of all the liquid medications 5 is completed, in the step (S60), the lifting device 50 moves the mounting table 48 downward, so that the medication bottle 2 is lowered. The mounting table 48 moves downward until it returns from the supply position to the initial position. In this way, the dispensing using the liquid medicine supply device 1 of the present embodiment is completed.

  In the description so far, the supply pipe 60 is configured by the tube 34, the elbow member 65, and the supply nozzle 36, but is not limited to this example. Instead of the elbow member 65, the tube 34 and the supply nozzle 36 may be connected by a bend joint having a curved shape. Further, in the vicinity of one end of the supply pipe 60 on the prescription bottle 2 side, the flow of the liquid 5 toward the one end is raised and then lowered to supply the liquid 5 from one end to the prescription bottle 2. If 60 can be arranged, the elbow member 65 is not essential. That is, it is also possible to define the flow direction of the liquid medication 5 by arranging the tube 34 to be curved or bent. Further, the supply nozzle 36 may be omitted, and the supply pipe 60 may be formed by the single tube 34.

  Although the embodiment of the present invention has been described as above, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Liquid supply device, 2 medication bottle, 2A top opening, 5 liquid, 21 rotating drum, 23 liquid bottle, 24 pump, 25 pump drive unit, 34 tube, 34a suction end, 34b discharge end, 36 supply nozzle, 36A supply port, 53 nozzle mounting plate, 55 mounting portion, 60 supply pipe, 61 first portion, 62 second portion, 65 elbow member, 66 first arm portion, 67 second arm portion, 68 bent portion, 80 holder member, 81 Elbow fixing hole, 82 Slide part, 83 Nozzle insertion hole, 84 Bolt insertion hole, 86 Interposition member, 87 Leg part, 90 Air injection part, 91 Receiving member, 92 Air jet, 93 Liquid droplets.

Claims (3)

A liquid medicine supply device that selectively supplies the liquid medicine to a medication bottle from a plurality of liquid medicine bottles containing a liquid medicine,
A pump for transferring the liquid medicine from each of the liquid medicine bottles to the medication bottle;
A supply pipe through which the liquid medicine flows from the liquid medicine bottle to the medication bottle;
One end of the supply tube has a first part including one end disposed opposite the upper opening of the medication bottle, and a second part connected to the first part,
The liquid medicine supplied to the medication bottle flows out of the supply pipe via the one end,
The second part forms an upward flow of the liquid medicine toward the first part,
The first part forms a downward flow of the liquid medicine to the one end,
The pump reverses the liquid medicine from the first part to the second part after completion of the supply of the liquid medicine to the medication bottle ,
The supply pipe includes a tube and a bending member attached to the tube,
The bending member has a first arm part, a second arm part, and a connecting part that connects the first arm part and the second arm part,
The connecting portion is disposed above the first arm portion and the second arm portion,
The first portion includes the first arm;
Said 2nd part is a liquid medicine supply apparatus containing said 2nd arm part . The second arm portion front SL, the upflow of the liquid medication to form toward the connecting portion, said first arm portion forms a downward flow of said liquid medication leading to the end, according to claim 1 Liquid medicine supply device. An air injection unit for spraying air to the end, liquid medication dispensing apparatus of claim 1 or claim 2.

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