WO2022186348A1 - 薬剤フィーダ - Google Patents
薬剤フィーダ Download PDFInfo
- Publication number
- WO2022186348A1 WO2022186348A1 PCT/JP2022/009203 JP2022009203W WO2022186348A1 WO 2022186348 A1 WO2022186348 A1 WO 2022186348A1 JP 2022009203 W JP2022009203 W JP 2022009203W WO 2022186348 A1 WO2022186348 A1 WO 2022186348A1
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- WIPO (PCT)
- Prior art keywords
- drug
- medicine
- rotating body
- time interval
- forward direction
- Prior art date
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- 239000003814 drug Substances 0.000 title claims abstract description 401
- 229940079593 drug Drugs 0.000 title claims abstract description 253
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 230000001105 regulatory effect Effects 0.000 claims abstract description 57
- 230000033001 locomotion Effects 0.000 claims description 62
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- 230000005284 excitation Effects 0.000 claims description 38
- 230000008844 regulatory mechanism Effects 0.000 claims description 25
- 230000033228 biological regulation Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 6
- 229940126589 solid medicine Drugs 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 20
- 238000003860 storage Methods 0.000 description 15
- 230000009471 action Effects 0.000 description 12
- 238000005259 measurement Methods 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000012377 drug delivery Methods 0.000 description 6
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- 239000003640 drug residue Substances 0.000 description 5
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- 230000001276 controlling effect Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
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- 238000003379 elimination reaction Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
- B65G47/12—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles
- B65G47/14—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding
- B65G47/1407—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding the articles being fed from a container, e.g. a bowl
- B65G47/1414—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding the articles being fed from a container, e.g. a bowl by means of movement of at least the whole wall of the container
- B65G47/1428—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding the articles being fed from a container, e.g. a bowl by means of movement of at least the whole wall of the container rotating movement
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0092—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for assembling and dispensing of pharmaceutical articles
Definitions
- This invention relates to a drug feeder that automatically supplies solid drugs such as tablets and ampoules in order to automate dispensing in hospitals, pharmacies, and the like.
- the drug feeder targeted by the present invention is a sequential delivery and sequential ejection that randomly accommodates a large number of drugs of the same shape and aligns the drugs one by one by aligning them with a rotating body. It relates to a drug feeder that performs
- Patent Documents 1 to 3 disclose conventional drug feeders having the following configuration.
- a conventional drug feeder includes an inner space having an upwardly opening opening and an annular upper end surface surrounding the opening, and an outer side rotatable about an imaginary vertical line extending vertically in the inner space. It is arranged in the inner space of the rotating body and the outer rotating body, and is rotatable about an imaginary inclined line inclined with respect to the vertical line in a state where a plurality of solid medicines are placed on the upper surface, and rotates.
- the control unit includes a time interval measuring unit that measures an undetected time interval during which the medicine is not detected by the output of the medicine dropping detection means during rotation control, and an undetected time measured by the time interval measuring unit. When the interval exceeds a predetermined final specified time interval, it is determined that there is no stored drug, and the discharge operation is stopped.
- Patent Documents 2 and 3 disclose that grooves or engravings are formed on the upper surface of the annular upper end surface of the outer rotating body to enhance the medicine conveying ability, or that a restricting mechanism for aligning the medicine is provided on the annular upper surface of the outer rotating body.
- a drug feeder is disclosed that naturally aligns solid drugs in an end face drug delivery path.
- Patent Documents 2 and 3 disclose that the rotation control performed by the controller (control unit) starts from low speed rotation and shifts to high speed rotation, and is based on the drug detection time length measured when the first falling drug is detected. Adjusting the rotation speed by estimating the size of the medicine, reducing the rotation speed when the remaining number calculated from the designated total number of discharges and the counted number of discharged medicines is low, and preventing unwanted excessive dropping after the completion of medicine discharge. It is disclosed that reverse rotation (rotation on the backward side) is performed for prevention. Further, in Patent Documents 2 and 3, when the medicine feeder has been completely discharged and the medicine feeder is empty, the medicine detection waiting time (non-detection time interval) by the medicine dropping detecting means is specified. It is done by checking that the time interval has been exceeded (ie checking for timeout).
- JP 2018-108277 A Japanese Patent No. 6736074 Japanese Patent No. 6736075
- the medicine feeder to be improved by the present invention comprises an outer rotator, an inner tilt rotator, an alignment regulation mechanism, a controller, and a medicine dropping detection means.
- the outer rotating body has an inner space having an opening that opens upward and an annular upper end surface surrounding the opening, and is rotatable about an imaginary vertical line that extends vertically in the inner space, and is rotatable during the discharge operation. Rotate forward.
- the inner tilting rotor is arranged in the inner space of the outer rotating body, and is rotatable about an imaginary tilt line tilted with respect to the imaginary vertical line with a plurality of solid medicines placed on the upper surface.
- the alignment restriction mechanism aligns the plurality of drugs that have moved onto the annular upper end surface of the outer rotating body along the rotation direction of the annular upper end surface when the outer rotating body rotates in the forward direction.
- the controller controls the rotation of the outer rotating body and the rotation of the inner tilting rotating body.
- the medicine dropping detection means detects the medicine that has fallen after being transported to the dropping outlet by the forward rotation of the outer rotating body.
- control unit includes a time interval measuring unit that measures an undetected time interval during which the medicine is not detected by the output of the medicine dropping detection means during rotation control, and an undetected time measured by the time interval measuring unit.
- a medicine ejection operation control section is provided for determining that the contained medicine is exhausted and stopping the ejection operation when the interval exceeds a predetermined final specified time interval.
- the drug ejection operation control section is configured to perform vibration excitation rotation control to vibrate and rotate the inner inclined rotor before stopping the ejection operation.
- the time is approaching (that is, the time is up).
- the undetected time interval measured by the interval measuring unit exceeds a predetermined specified time interval
- vibration is superimposed on the rotation of the inner inclined rotor.
- the vibration superimposed on the rotation of the inner inclined rotor includes a vertical vibration component, and the vibration is transmitted to the outer rotor and further to the support member, discharge guide, etc. Undesirable drug residue on the annular upper end surface of the can be avoided. Therefore, according to the present invention, it is possible to reduce or eliminate the drug stagnation factor so that the drug is discharged before the drug discharge detection time expires even when the amount of residual drug is very small.
- vibration is generated by alternately performing a forward operation for rotating the inner inclined rotor in the forward direction and a reverse operation for rotating it in the reverse direction opposite to the forward direction many times. preferable.
- vibration is generated by executing vibration excitation rotation control by repeating rotation in the forward direction (advance side) and rotation in the reverse direction (retreat side). Therefore, there is the advantage that it is not necessary to separately prepare a special vibration generator. For example, if a bi-directionally rotatable motor is selected as the rotation drive motor for the inner inclined rotor, vibration excitation rotation control can be easily realized without adding a motor dedicated to vibration excitation.
- the amount of forward motion and the amount of reverse motion in the excitation rotation control are minute compared to the amount of forward motion of the inner inclined rotor before performing the excitation rotation control.
- the fine vibrations generated by the repetition of such minute amounts of movement effectively suppress the effects of adhesive forces, etc. that try to stop the drug on the inner inclined rotating body.
- the motion amount of the forward motion in the excitation rotation control is set to be larger than the motion amount of the reverse motion, the inner tilting rotor is vibrated while moving the inner tilting rotor in the forward direction. be able to.
- the medicine discharge operation control unit rotates the inner inclined rotating body in the reverse direction at a speed (high speed) higher than the rotation speed when rotating in the forward direction during the discharge operation.
- a directional action may be performed.
- the medicine ejection operation control unit rotates the inner inclined rotating body in the forward direction at a speed higher than the rotation speed when rotating in the forward direction during the ejection operation. may be performed.
- the inner inclined rotor is further operated in the high speed reverse direction (fast rotation in the reverse direction) or at high speed. Forward motion (fast forward side rotation) will be added in no time.
- the medicine remaining on the inner inclined rotor quickly transfers to the annular upper end surface of the outer rotor before the undesirable adhesive force or the like recovers. Therefore, it is possible to accurately avoid drug residue without wasting the effect of reducing or eliminating drug retention factors by the preceding vibration excitation rotation control.
- the medicine ejection operation control unit includes an outer driving unit that controls the rotation of the outer rotating body, an inner driving unit that controls the rotation of the inner inclined rotating body, and an undetected time interval of a predetermined 1
- a determination unit that determines whether or not the specified time interval has been reached, and the outer drive unit and the inner drive unit are driven according to an operation mode selected from a plurality of predetermined operation modes based on the determination result of the determination unit. It can be configured to include a drive command generator for giving a command.
- the operation modes include at least an operation mode for vibration excitation rotation control.
- a plurality of operation modes include a high-speed reverse operation in which the inner inclined rotor rotates in the reverse direction at a faster speed than it rotates in the forward direction during the discharge operation immediately after the excitation rotation control is executed. and after performing a high speed reverse operation, the inner tilting rotor is rotated in the forward direction at a speed higher than the speed at which it is rotating in the forward direction during the discharge operation. It may be
- the medicine ejection operation control unit A mode of operation may be included that provides a reverse motion to rotate the tilting rotor in reverse.
- the drug non-detection time interval related to the drug that has been carried to the drop discharge port by the outer rotating body and dropped is the known drug non-detection time interval or a time interval close to it under normal drug discharge operation.
- a congestion time interval drug non-detection time interval when drug delivery is congested
- the outer rotating body There is a high possibility that an undesirable jammed state of drug delivery has occurred in the drug delivery path of the annular upper end surface of the .
- a large number of drugs are clogged at the regulating member and a drug congestion state occurs in the conveying direction, this is detected as discharge delay. Relaxing restrictions will make it easier for drugs at the forefront of traffic jams to move forward.
- the alignment regulation mechanism it is possible to use a mechanism that regulates the lateral width of the drug transport path formed on the annular upper end face of the outer annular rotating body.
- the medicine discharge operation control section is provided with an addition/decrease command generation section that outputs an addition/decrease command for adjusting the lateral width restriction amount.
- the adjustment command generation unit Prior to the execution of the vibration rotation control, the adjustment command generation unit adjusts the lateral width when the non-detection time interval measured by the time interval measurement unit reaches a predetermined congestion time interval longer than the drug non-detection time interval under normal conditions. It is preferable to output an increase/decrease command for gradually expanding to the regulation mechanism.
- the alignment restriction mechanism is actuated to widen the width of the drug transport path, so that the restriction on the passage of the medicine through the alignment restriction mechanism is temporarily relaxed.
- a slight movement of the leading medicine causes the following medicines to be pressed against each other to be relieved, and the continuous state of the medicines is changed, which is useful for resolving the medicine congestion state.
- the operation can be easily performed by slightly additionally operating the alignment regulation mechanism, and the undesirable pushing of the medicines against each other is alleviated.
- the width regulation function of the alignment regulation mechanism can be made useful for resolving medicine jams in a range that does not damage even a fragile medicine and in a simple manner.
- the adjustment command generating section may output to the alignment regulating mechanism an adjustment command to return the width to the size before expansion when the medicine drop detection means detects the drop of the medicine.
- the addition/subtraction command generator may be configured to output an addition/subtraction command for increasing the width in stages. Alleviation of the width of the medicine conveying path In other words, if the width of the medicine conveying path is increased step by step instead of continuously, the medicine subject to regulation intermittently laterally moves. As a result, when the medicines are moved, the friction between the medicines is suppressed and the state of pressing between the medicines is alleviated. In addition, since the drugs are arranged in an aligned state between the moving motions, the impact on the drugs can be suppressed, and the jammed state of the drugs can be easily and efficiently eliminated.
- the whole medicine feeder structure is shown, (A) is an external perspective view, (B) is a longitudinal front view. 1 shows the structure of an inner inclined rotor of a drug feeder, (A) is an overall external perspective view, (B) is a cross-sectional view of the main body of the inner inclined rotor, (C) is a plan view of the main body, and (D) is the main body. It is a front view of.
- FIG. 3 shows the structure of the sorting mechanism and the alignment regulation mechanism of the drug feeder,
- A) is an external perspective view of the sorting mechanism that sorts the drugs, and
- B) is an oblique contact of the action part in the middle stage of the sorting mechanism. It is an external appearance perspective view which shows the sorting
- FIG. 10 is a flow chart showing approximately half of an operational mode algorithm for performing drug delivery motion control
- FIG. 11 is a flow chart showing the rest of the algorithm for the mode of operation that implements the drug expelling motion control; The state immediately after the medicine is thrown into the medicine feeder is shown, (A) is a plan view, and (B) is a longitudinal front view.
- Fig. 2 shows an operation state in which medicines are smoothly arranged and discharged in order, (A) being a plan view and (B) being a longitudinal front view.
- Fig. 10(A) is a plan view and Fig. 1(B) is a vertical cross-sectional front view showing an operation state in which the drug is congested at the regulating member.
- FIG. 10A is a plan view
- FIG. 1B is a longitudinal front view showing an operation state in which drug congestion is eliminated by widening the drug transport path.
- Fig. 2 shows an operation state in which only one drug remains without being discharged, (A) is a plan view, and (B) is a longitudinal front view.
- FIG. 1 shows the overall structure of the drug feeder 10
- FIG. 1(A) is an external perspective view
- FIG. 1(B) is a longitudinal front view
- 2 shows the structure of the inner tilting rotor 30
- FIG. 2A is an external perspective view
- 3 and 4 show the structure of the outer rotor 20, FIG. 3(A) being a longitudinal sectional view of the entire outer rotor 20, and FIG. 3(B) being an enlarged view of a part of the outer rotor 20
- FIG. 3(C) is also a vertical sectional view of the entire outer rotating body 20
- FIG. 4(A) is a plan view of the annular upper end surface 23 of the outer rotating body 20
- FIG. 4(B) is an enlarged view of a part thereof. is.
- FIG. 5 shows the structures of the tablet height regulating mechanism 60 and the width regulating mechanism 70
- FIG. 5B is an external perspective view showing the sorting state by the oblique contact surface of the action portion 62b in the middle stage of the tablet height regulating mechanism 60.
- FIGS. 8 and 9 show the structure of the width regulating mechanism 70.
- FIG. 6A is a plan view showing a simplified main part of the width regulating mechanism 70
- FIG. 6B is a plan view of the first regulating member 71.
- FIG. 6C is an end view of the first restricting member 71 .
- 7A is a functional block diagram of the control section 80
- FIG. 7B is a functional block diagram of the drug ejection operation control section 84.
- FIGS. 8 and 9 are flow charts showing the algorithm of the medicine discharge operation control program installed in the control unit 80.
- FIG. 8 and 9 are flow charts showing the algorithm of the medicine discharge operation control program installed in the control unit 80.
- the drug feeder 10 (see Fig. 1) is of the double-rotation type.
- the drug feeder 10 includes a housing 10A, an outer rotating body 20, an inner tilting rotating body 30, a width regulation mechanism 70, a control section 80, and a drug dropping detection means 56.
- the housing 10A has a peripheral wall 11 positioned at the top of the housing 10A and hollowed out in a substantially circular shape at the central portion thereof.
- the outer rotating body 20 is installed with its upper end loosely fitted to the inner peripheral wall surface 11 a of the peripheral wall 11 , that is, the hollow inner peripheral wall surface of the peripheral wall 11 .
- the outer rotating body 20 has an inner space 20B having an opening 20A that opens upward, and an annular upper end surface 23 surrounding the opening 20A. Rotatable.
- the inner inclined rotating body 30 is arranged in the inner space 20B of the outer rotating body 20, and can rotate about an imaginary inclined line inclined with respect to the vertical line with a plurality of solid medicines placed on the upper surface thereof. , move a plurality of drugs onto the annular upper end surface 23 of the outer rotating body 20 while rotating.
- a support mechanism 40 for axially rotatably supporting the outer rotating body 20 a rotation driving mechanism 50 for driving the rotation thereof, and a working portion provided on the upper side of the peripheral wall 11 and arranged on the inner periphery.
- the alignment restriction mechanism consisting of the tablet height restriction mechanism 60 and the width restriction mechanism 70 aligns the plurality of drugs that have moved onto the annular upper end surface 23 of the outer rotating body 20 to the annular upper end surface 23 while the outer rotating body 20 is rotating. Align along the rotation direction of the face.
- the control unit 80 performs rotation control of the outer rotating body 20 and rotation control of the inner inclined rotating body 30 .
- the outer rotator 20 is supported by a support mechanism 40 and maintained in a state of being able to pivot about a vertical line or a vertical line slightly inclined therefrom.
- the inner inclined rotating body 30 is mounted inside the outer rotating body 20 and is kept in a state of being able to rotate around an inclined line that is larger than the vertical line and is inclined from the vertical line.
- the inner inclined rotating body 30 closes the hollow of the outer rotating body 20 at its lower portion, and the combination of both rotating bodies 20 and 30 forms a rotating container (20+30) with an open top.
- the inner inclined rotor 30 carries up the solid drug on the inclined surface and feeds it onto the annular upper end surface 23 of the outer rotor 20 when rotating in the forward direction. 20 conveys the drug toward the drop discharge port 14 by the circular motion of the annular upper end surface 23 when rotating in the forward direction (when rotating in the forward direction).
- the tablet height regulating mechanism 60 softly abuts against the medicine conveyed by circulating and rotating in the forward direction of the annular upper end surface 23 of the outer rotating body 20, thereby breaking down the overlapping of the medicine within a reasonable range. It is designed to break up clumps.
- the width regulating mechanism 70 aligns the medicines conveyed by the circular rotation of the annular upper end face 23 of the outer rotating body 20 in one vertical row and one horizontal row.
- the rotation drive mechanism 50 is provided with a rotation drive motor 54a that rotates the inner inclined rotor 30 and a rotation drive motor 54b that rotates the outer rotor 20, and the outer rotor 20 and the inner tilted rotor are driven independently.
- the bodies 30 are individually rotatable. Stepping motors, for example, are adopted as the two motors 54a and 54b, and their synchronization and cooperation are left to the control of the control section 80. As shown in FIG.
- control unit 80 (controller) is mainly composed of a programmable microprocessor, and inputs the output of the drug dropping detection means 56 and controls the rotation of the rotation drive mechanism 50. In addition to controlling the drive motors 54a and 54b, it also controls the elevation drive motor 60a of the tablet height regulation mechanism 60 and the advance/retreat drive motor 70a of the width regulation mechanism . Note that the control unit 80 will be described later in detail.
- the peripheral wall 11 is vertically attached to a portion corresponding to the tip of the central hollow and the inner peripheral wall surface 11a which are obliquely extended to the outer peripheral side.
- a drop discharge port 14 is formed penetrating through, and a drug drop detection means 56 is provided facing the drug drop path extending downward from the drop discharge port 14 .
- a hollow portion of the peripheral wall 11 protrudes obliquely toward the center.
- a discharge guide 13 is formed.
- a conveying surface guide 12 extending downward and forward is formed at the leading edge, and the medicine is tilted inward by the recoil of contact with the discharge guide 13. Undesirably falling toward the rotating body 30 is prevented.
- the inner inclined rotating body 30 (see FIG. 2 and Patent Documents 2 to 5) is mainly composed of a generally disk-shaped main body 30a. protruding.
- the main body 30a has a generally flat upper surface at its central portion 32, but a transfer portion 34 and a push-up portion are provided at the peripheral portion 33 so that the medicine can be efficiently pushed up and delivered to the outer rotating body 20 even at low speed. 35 are formed alternately in the circumferential direction.
- the illustrated delivery portion 34 is a locally chamfered outer downward notch that is larger than the drug, and the push-up portion 35 is a rising portion located on the rear end side of both circumferential ends of such a delivery portion 34. be.
- the main body 30a is formed everywhere with parallel wave-like unevenness 36 in which a large number of narrow and shallow linear grooves extending in the radial direction are arranged and carved.
- the outer rotating body 20 (see FIG. 3, Patent Documents 2 to 5) has an overall shape as if the bottom of a bowl-shaped body was removed.
- the outer rotating body 20 is composed of a tubular lower portion 21 and a brim-shaped upper portion 22 .
- the diameter of the hollow portion of the inner peripheral portion of the outer rotating body 20 is the largest at the annular upper end surface 23 at the highest position, and the diameter of the hollow portion decreases as it descends from there. Therefore, the inner inclined rotor 30 can be freely inserted into or removed from the hollow portion of the outer rotor 20, and assembly and parts replacement are easy.
- the upper surface (medicine transport path) of the annular upper end surface 23 of the upper portion 22 of the outer rotating body 20 has a plurality of grooves 23a for preventing/suppressing rolling of the easily rolling medicine.
- a large number of engravings 23b are arranged in a circumferential direction at equal pitches.
- a chamfer 23c having an inclination angle .alpha.
- the vertical line corresponding to the central axis of rotation of the upper part 22 and thus the outer rotating body 20 is inclined by an angle ⁇ from the vertical line (the one-dot chain line in the figure).
- This inclination angle ⁇ which is highlighted in the drawing, is suppressed to, for example, about 3.5° so as not to impair the drug delivery function, and is smaller than the inclination angle ⁇ of the chamfer 23c of the annular upper end surface 23 described above. .
- the inclination from the horizontal of the chamfer 23c of the annular upper end surface 23 is the maximum inclination ( ⁇ + ⁇ ) when the annular upper end surface 23 is lowered (to the left in the figure) and when it is raised (to the right in the figure).
- the chamfered portion 23c of the annular upper end face 23 always maintains a downward state toward the outer peripheral side.
- the inclination of the central axis of rotation of the inner inclined rotor 30 is many times greater than the inclination of the central axis of rotation of the outer rotor 20 .
- the tablet height regulating mechanism 60 (FIGS. 1 and 5) includes a supporting portion 61 having two long and short arms extending laterally, and operating portions 62a, 62b at the lower end of which the upper end is held by the supporting portion 61. 62c is positioned above the annular upper end surface 23 of the outer rotating body 20, and all of them are provided with three vertically long sorting members.
- the tablet height regulating mechanism 60 lifts and lowers the lower ends of the action portions 62a, 62b, and 62c of the three sorting members and the annular upper end of the outer rotating body 20 by raising and lowering the support portion 61 with the lifting drive motor 60a under the control of the control portion 80.
- the vertical interval between the end surface 23 and the drug transport path can be expanded or reduced.
- the acting member (62a) hanging down from the short arm portion of the support portion 61 and acting first on the drug on the drug transport path is composed of a plurality of small spheres such as ball chains arranged in series. It consists of connected members.
- the working member (62c) hanging down from the tip of the long arm of the support part 61 and lastly acting on the drug on the drug transport path consists of a series connection of large spheres.
- the action member (62b) which hangs down from the tip of the long arm portion of the support portion 61 and acts on the drug along the drug transport path, is loosely held at its upper end. It consists of a plate-like body. Each of the action members acts while the free lower end part escapes against the abutting medicine, so that the pills are broken up to the extent that the medicine is not impacted.
- the lateral width regulating mechanism 70 positions the rear swinging end just above the drug transport path of the annular upper end surface 23 of the outer rotating body 20. It is provided with a first regulating member 71 and a second regulating member 72 and a link mechanism 73 for narrowing the width of the drug transport path from the outer peripheral side.
- the width regulating mechanism 70 includes a link mechanism 73 that connects the first regulating member 71 and the second regulating member 72 via a pin-shaped rotation-permitting shaft member, and a mold storage space 74 that can accommodate the sample drug 5. ing.
- the swinging end of the first restricting member 71 is positioned between the acting portions 62 a and 62 b of the tablet height restricting mechanism 60
- the swinging end of the second restricting member 72 is positioned between the acting portions 62 a and 62 b of the tablet height restricting mechanism 60 . It is positioned behind the portion 62c, that is, near the drop discharge port 14.
- the first and second regulating members 71 and 72 swing simultaneously and in the same manner as the link mechanism 73 advances and retreats in the longitudinal direction, the width of the medicine conveying path can be expanded or reduced by the first and second regulating members 71 and 72.
- the state is also linked.
- the mold storage area 74 when the drug 5 is placed, drug measurement can be performed to measure the length, width, and thickness of the drug 5. If the medicine is not placed in the mold storage area 74, one end of the link mechanism 73 is freely pushed and pulled to swing the ends of the first and second regulating members 71 and 72 without being subject to the restriction, thereby conveying the medicine.
- the path width can be scaled.
- the medicine is measured by the control unit 80 obtaining the movement distance when the forward/backward drive motor 70a advances and retreats the movable member (medicine clamping member) of the mold storage space 74 under the control of the control unit 80 to sandwich the portion of the medicine to be measured. done.
- the first regulating member 71 Since the first and second regulating members 71 and 72 have the same shape, the first regulating member 71 will be explained (FIG. 6B).
- the swinging end on the right end is located above the annular upper end surface 23 of the outer rotating body 20.
- a lower stage portion 71a On the inner peripheral side surface of the first restricting member 71, a lower stage portion 71a that has a width restricting function is provided. , and an upper portion 71b projecting inward from the upper portion 71a, and an inclined surface is formed between the lower portion 71a and the upper portion 71b. performs a strict lateral width control function according to the advance and retraction of the link mechanism 73, and the upper stage portion 71b performs height control to reliably break down the superimposed medicines.
- the second control member 72 is also the same.
- the control unit 80 includes an initialization unit 81, a measurement unit 82, a drug number management unit 83, and a drug discharge operation.
- a control section 84 is included.
- the initialization unit 81 Upon receipt of an initialization instruction by manual operation or a control signal, the initialization unit 81 performs initialization to clear various data values such as data on the number of medicines discharged, and also initializes each motor (54a, 54b, 60a, 70a). to the initial state.
- the measuring unit 82 drives the advancing/retreating drive motor 70a to measure the width and thickness of the drug 5 in the mold storage space 74, acquires and holds the data, and further transfers the data to the upper level. Transfer to device.
- the medicine discharge operation control section 84 immediately controls the elevation drive motor 60a and advance/retreat movement based on the dimension data, if the dimension data including the width data and thickness data relating to the target medicine is held. By operating the drive motor 70a, the drive control of the width regulation mechanism 70 is performed. If the medicine ejection operation control unit 84 does not hold the dimension data, it acquires the dimension data of the width and thickness of the target medicine by the measuring process in the measuring unit 82 or by downloading the data, and then controls the lift drive motor based on the dimension data. Drive control for the lateral width regulating mechanism 70 is performed by operating the forward/retreat drive motor 70a.
- the height from the drug conveying path to the acting portions (62a, 62b, 62c) of the tablet height regulating mechanism 60 and the width of the drug conveying path narrowed by the tips of the regulating members (71, 72) of the width regulating mechanism 70 The regulated amount is adapted to the target drug.
- the medicine number management unit 83 of the control unit 80 rotates the rotary drive motor 54a and the rotary drive motor 54b to control the medicine discharge operation, while monitoring the output of the medicine dropping detection means 56 to discharge medicines one by one. is grasped, and the count value of discharged medicine is obtained by counting the number of falling medicines.
- the drug number management unit 83 also manages the number of drugs by stopping control of the drug discharge operation when the acquired count value of discharged drugs reaches a specified number (a specified prescribed amount such as a prescribed prescribed amount for one patient). It's becoming
- the drug discharge operation control unit 84 is configured by the functional blocks shown in FIG. 7(B). Specifically, the drug discharge operation control section 84 includes an outer driving section 84A that controls the rotation of the outer rotating body 20 and an inner driving section 84B that controls the rotation of the inner inclined rotating body 30 . In addition, the medicine discharge operation control unit 84 detects the falling medicine at intervals of time when the falling medicine is not detected based on the output of the medicine dropping detection means 56. A time interval measurement unit 84C is provided for measuring the time interval until the drug is detected.
- the drug discharge operation control unit 84 includes a determination unit 84D that determines whether or not the undetected time interval measured by the time interval measurement unit 84C has reached one or more predetermined time intervals, and a determination unit 84D.
- a drive command generating section 84F is provided to issue a drive command to the outer drive section 84A and the inner drive section 84B according to an operation mode selected from a plurality of predetermined operation modes based on the determination result.
- a plurality of operation modes are stored in the operation mode storage unit 84E, and the operation modes include at least an operation mode for vibration excitation rotation control, which will be described later.
- the forward operation for rotating the inner inclined rotating body 30 in the forward direction and the reverse operation for rotating it in the reverse direction opposite to the forward direction are alternately performed many times to generate vibration. occurs.
- the amount of forward motion and the amount of backward motion are minute compared to the amount of forward motion of the inner inclined rotating body 30 before the excitation rotation control.
- the amount of motion in the forward direction is set to be larger than the amount of motion in the reverse direction in vibration excitation rotation control. In this way, the vibration generated by the minute amount of movement effectively suppresses the effect of adhesive force, etc., which tends to keep the medicine on the inner inclined rotor 30 .
- the motion amount of the forward motion in the excitation rotation control is set to be larger than the motion amount of the reverse motion, the inner tilting rotor 30 can be vibrated while moving the inner tilting rotor 30 in the forward direction. can be done.
- the plurality of operation modes include, for example, a high speed mode in which the inner inclined rotor 30 is rotated in the reverse direction at a speed higher than the rotation speed when the inner inclined rotor 30 is rotating in the forward direction during the discharge operation immediately after the execution of the vibration rotation control.
- a reverse operation is performed, and after performing the high-speed reverse operation, a high-speed forward operation is performed in which the inner inclined rotating body 30 is rotated in the forward direction at a speed higher than the rotation speed when rotating in the forward direction during the discharge operation. It contains the mode of operation to do.
- the inner inclined rotor 30 is reversed. It also includes an operation mode for reverse rotation control.
- the drug detection time interval for the drug that has been carried to the drop discharge port by the outer rotating body 20 and dropped is, under normal drug discharge operation, a known non-detection time interval (normal non-detection time interval) or close to it. be a time interval.
- a congestion time interval a time interval when the transportation of the medicine is congested
- the undesirable medicine in the medicine conveying path of the annular upper end surface 23 of the outer rotating body 20 is reached. There is a high possibility that transportation congestion has occurred.
- the width regulation mechanism 70 one that regulates the width of the drug transport path formed on the annular upper end face 23 of the outer rotating body 20 is used.
- the medicine discharge operation control section 84 is provided with an adjustment command generating section 84G that outputs an adjustment command for adjusting the width regulation amount.
- the adjustment command generating unit 84G gradually expands the width.
- An adjustment command is output to the regulation mechanism driving section 84H.
- the advance/retreat drive motor 70a of the width regulation mechanism 70 is actuated to widen the width of the drug conveying path, and the regulation on the passage of the medicine through the width regulation mechanism 70 is temporarily relaxed.
- a slight movement of the leading medicine causes the following medicines to be pressed against each other to be relieved, and the continuous state of the medicines is changed, which is useful for resolving the medicine congestion state.
- the operation can be easily carried out by slightly additionally operating the width regulating mechanism 70, and the undesirable pushing of the medicines against each other is alleviated. None.
- the adjustment command generation unit 84G drives the regulation mechanism drive unit 84H to increase the width, and then, when the medicine drop detection means 56 detects the medicine drop, the adjustment command generation unit 84G issues an adjustment command to the regulation mechanism drive unit 84H to return the width to the size before expansion. output to 84H.
- the addition/subtraction command generator 84G can be configured to output an addition/subtraction command for expanding the width in stages. If the lateral width of the drug transport path is relaxed, in other words, if the lateral width of the drug transport path is expanded stepwise rather than continuously, the drug subject to regulation will intermittently laterally move. As a result, when the medicines are moved, the friction between the medicines is suppressed and the state of pressing between the medicines is alleviated. In addition, since the drugs are arranged in an aligned state between the moving motions, the impact on the drugs can be suppressed, and the jammed state of the drugs can be easily and efficiently eliminated.
- the outer rotor 20 and the outer rotor 20 are arranged in order to quickly feed the drug from the inner tilted rotor 30 onto the annular upper end surface 23 of the outer rotor 20.
- the inner inclined rotating body 30 is temporarily rotated in the forward direction at a high speed for a predetermined time (step S11), and then both rotating bodies 20, 30 are continuously rotated at a constant speed for stabilizing the transport of medicine. is rotated in the forward direction (step S12).
- step S13 the presence or absence of medicine discharge is checked (step S13).
- the value is cleared to zero (step S14), and it is checked whether or not the specified number of medicines have been discharged by the medicine discharge at that time (step S15). ), the rotations of both rotating bodies 20 and 30 are rapidly decelerated, reversed, and stopped (step S23) in order to prevent excessive discharge, and the designated number of drug discharge control is completed.
- control unit 80 controls the advance/retreat drive motor 70a to expand the width of the medicine conveying path. If so, the advance/retreat drive motor 70a is controlled to reduce the lateral width of the drug transport path and return it to the state before enlargement.
- Step S16 When the undetected time t that has elapsed since the most recent drug discharge is less than the predetermined time t1 [0 ⁇ t ⁇ t1] (normal time interval) (Y in step S16), the status quo is maintained and the drug discharge detection is repeated. (Step S13).
- the non-detection time interval t is a predetermined time interval [t1 ⁇ t ⁇ t2] (congestion time interval) (congestion time interval)
- the forward/backward drive motor 70a is controlled to gradually widen the lateral width of the drug transport path of the annular upper end surface 23 of the outer rotating body 20 (step S16 N, step S17, step S18 Y).
- the drug feeder 10 is operated by the regulating member. 71 and 72 are controlled to widen the width of the drug transport path.
- the width of the drug transport path may be expanded gradually and smoothly, but in anticipation of the effect of shaking, it is done stepwise, such as stepwise.
- the inner inclined rotor 30 is reversely rotated (backward rotation) (step S18 N, step S19, step S20 Y).
- the non-detection time interval t is a predetermined time interval [t3 ⁇ t ⁇ t4]
- the remaining medicine can be quickly removed. 2
- both rotating bodies 20 and 30 are rotated in the forward direction at high speed (N in step S20, Y in step S22).
- step S30 to S40 in FIG. 9 After that (t4 to t10, residual drug retention time interval), considering the possibility that the remaining drug, which has become small, may be stopped due to undesirable adhesion or catching, etc., further discharge operations are carefully performed. (steps S30 to S40 in FIG. 9).
- both rotating bodies 20 and 30 continuously rotate in the forward direction at a constant speed while the undetected time interval t is a predetermined time interval [t4 ⁇ t ⁇ t5] (N in step S22, step S30 , Y in step S31).
- the medicine remains at the boundary between the annular upper end surface 23 of the outer rotating body 20 and the discharge guide 13 or the conveying surface guide 12.
- the outer rotating body 20 is gently reversed (step S31 N, step S32, step S33 Y).
- the inner inclined rotor 30 is gently rotated in the reverse direction (N in step S33, Y in step S35).
- an exciting rotary motion is performed to gently rotate the inner inclined rotor 30 in the forward direction while vibrating it.
- N of step S35, Y of step S36, step S37 when the control unit 80 controls the rotation of the rotation drive motor 54b, the forward motion of rotating the inner inclined rotor 30 in the forward direction and the reverse motion of rotating it in the reverse direction are repeated many times. Vibration is generated by alternating. Specifically, the amount of forward motion and the amount of backward motion are minute compared to the amount of forward motion of the inner inclined rotating body 30 before the excitation rotation control.
- the vibrations generated by the repetition of minute rotating motions effectively suppress the action of adhesive force, etc., which tends to keep the drug on the inner inclined rotating body 30 .
- vibration is applied to the inner tilted rotor 30 while advancing the inner tilted rotor 30 in the forward direction. Due to this movement, a vibrating rotary motion that rotates while vibrating is executed without the addition of a vibrating motor or the like.
- the inner inclined rotating body 30 is rotated while the undetected time interval t is a predetermined time interval [t8 ⁇ t ⁇ t9].
- Swing reverse rotation control for high-speed reverse rotation is performed (N in step S37, Y in step S39, step S39).
- the undetected time interval t is a predetermined time interval [t9 ⁇ t ⁇ t10]
- swing forward rotation control is performed to rotate the inner inclined rotating body 30 in the forward direction at high speed (N in step S39, step S40, Y in step S41).
- the operation amount of the swing-out reverse control described above is roughly one revolution, but it may be larger or smaller than that.
- the amount of operation is preferably several rotations, but it may be larger or smaller.
- the non-detection time interval t reaches the predetermined time interval (final specified time interval) [t10] without detecting the discharge of the drug. Then (N in step S41), the time runs out and the control unit 80 determines that there is no more stored medicine, stops the rotation of both rotors 20 and 30 (step S42), and ends the medicine discharge control.
- FIG. 10 shows the state immediately after the drug 5 is thrown onto the inner inclined rotating body 30, and FIG. FIG. 13 shows the operation state when the congestion of the medicines 5 is eliminated by widening the width of the medicine conveying path by the width regulation mechanism 70, and FIG. It shows the operating state when it remains without being ejected.
- the controller 80 Prior to using the medicine feeder 10 for dispensing, it is necessary for the controller 80 to hold at least the width and thickness of the shape data of the medicine. If so, enter data or measure and set data.
- the measurement may be performed by another device, and the dimensional value may be input to the drug feeder 10 by manual operation or downloaded from a host device.
- the controller 80 operates the advance/retreat drive motor 70a. Measurement and data setting related to the width of the drug are automatically performed. Also, if the medicine 5 is set vertically in the mold storage 74 and then operated in the thickness measurement mode, measurement and data setting related to the thickness of the medicine are automatically performed in the same manner. After that, the medicine 5 can be included in the dispensing object by taking it out from the mold storage place 74 and putting it into the rotating container (20, 30).
- the control unit 80 operates the motor 60a based on the thickness data of the drug for the tablet height regulating mechanism 60, and accordingly the support portion of the tablet height regulating mechanism 60 is operated. 61 moves up and down, thereby adjusting the height of the action parts (62a, 62b, 62c) to the thickness of the drug (see FIGS. 5 and 10(B)).
- the control unit 80 operates the motor 70a based on the width data of the medicine, and the link mechanism 73 of the width regulation mechanism 70 moves in the longitudinal direction via the mold storage space 74 accordingly.
- the regulating members 71 and 72 swing, thereby matching the width of the corresponding portion of the drug transport path on the annular upper end surface 23 of the outer rotating body 20 to the width of the drug (FIGS. 5(A) and 11( A)).
- the number of medicines specified in the medicine prescription and other initial values are set as data in the control unit 80, and a large number of medicines 5 in excess of that number are fed into the medicine feeder 10. Specifically, it is put on the inner inclined rotating body 30 surrounded by the outer rotating body 20 (see FIG. 10).
- both rotating bodies 20 and 30 are temporarily rotated in the forward direction at high speed (see step S11 in FIG. 8), and the medicine is quickly transferred from the inner inclined rotating body 30 to the outer rotating body 20.
- step S12 in FIG. 8 when the medicine starts to line up in the medicine transport path of the annular upper end surface 23 of the outer rotor 20, the rotational speeds of both the rotors 20 and 30 are adjusted to a predetermined speed suitable for stable transport. The speed is reduced to a constant speed, and both rotating bodies 20 and 30 continue to rotate in the forward direction.
- both rotating bodies 20 and 30 continue to rotate in the forward direction at a constant speed, the drug 5 is successively lifted by the inner inclined rotating body 30 and placed on the annular upper end surface 23 (drug transport path) of the outer rotating body 20. (see FIG. 11), advances along the drug transport path as the outer rotating body 20 rotates, and attempts to slip under the working portions (62a, 62b, 62c) of the tablet height regulating mechanism 60 one after another. .
- the medicine 5b on the upper side comes into contact with the action portions 62a, 62b, and 62c at the lower end of the tablet height regulating mechanism 60 (see FIG. 5(B)).
- the overlap is often broken by force.
- the tablet height regulating mechanism 60 escapes when the action portion is pushed sideways, the medicine 5 is not damaged, but the overlapping medicine may remain without collapsing.
- step S13Y in FIG. 8 Every time the drug discharge is detected (see step S13Y in FIG. 8), the value of the undetected time interval t is cleared to zero (see step S14 in FIG. 8). Also, although illustration is omitted, the rotation of the outer rotating body 20 and the inner inclined rotating body 30 is returned to constant-speed forward rotation, and if the width of the drug transport path has been expanded, it is returned to the original width. Further, the number of medicines discharged is counted up, and it is confirmed whether or not the number of medicines discharged has reached the specified number (see step S15 in FIG. 8).
- step S23 in FIG. 8 When the number of medicines discharged reaches the specified number (see step S23 in FIG. 8), the rotation of the outer rotating body 20 and the inner tilting rotating body 30 is rapidly decelerated and slightly reversed in order to suppress excess discharge due to inertia. After that, it is stopped, and the specified number of drug ejection operations are completed there.
- step S15N in FIG. 8 when the number of discharged medicines has not yet reached the specified number (see step S15N in FIG. 8), the following discharge operation is performed while waiting for detection of the next medicine discharge (see step S13N in FIG. 8). (See step S16 in FIG. 8 to step S42 in FIG. 9).
- both rotating bodies 20 and 30 are rotated in the forward direction at a constant speed until the undetected time interval t reaches the time interval t1 (see step S16Y in FIG. 8).
- the medicine is still not discharged (see step S16N in FIG. 8)
- the regulating members 71 and 72 are occasionally shaken. movement to intermittently expand the width of the drug transport path (see step S17 in FIG. 8). If the drugs are congested on the drug transport route (see FIG. 12), the congestion is resolved (see FIG. 13).
- both rotors 20, 30 are rotated at high speed as a countermeasure against the shortage of the drug remaining on the inner inclined rotor 30. It is rotated in the forward direction (see step S21 in FIG. 8).
- both rotating bodies 20 and 30 are continuously rotated in the forward direction at a constant speed (see step S31 in FIG. 9).
- the undetected time interval t is a predetermined time interval [t5 ⁇ t ⁇ t6]
- the medicine remains at the boundary between the annular upper end surface 23 of the outer rotating body 20 and the discharge guide 13 or the conveying surface guide 12.
- the outer rotating body 20 is gently rotated in the reverse direction (see step S32 in FIG. 9).
- the inner inclined rotating body 30 is gently rotated in the reverse direction (see step S34 in FIG. 9), and the outer rotating body 20 rotates in the forward direction. back to While the undetected time interval t is a predetermined time interval [t7 ⁇ t ⁇ t8], the outer rotating body 20 continues to rotate in the forward direction, and the inner tilting rotating body 30 is controlled to vibrate and rotate. .
- the vibration excitation rotation control the forward operation that rotates the inner inclined rotor in the forward direction and the reverse operation that rotates it in the opposite direction to the forward direction are determined so that the amount of movement in the forward direction is greater than the amount of movement in the reverse direction.
- Vibration is generated by alternately performing the operation so that the number of vibrations increases (see step S36 in FIG. 9).
- Such rotational movement accompanied by vibration effectively eliminates or suppresses the adhesive force, etc. of the drug remaining on the inner inclined rotor 30 (see FIG. 13). It is possible to accurately avoid the occurrence and continuation of drug residue.
- the vibration of the inner tilting rotor 30 is not only extinguished there, but is also transmitted to other members such as the outer rotor 20 that come into contact with the medicine. It is possible to avoid or suppress the occurrence and continuation of drug residue.
- the outer rotating body 20 continues to rotate in the forward direction.
- the inner inclined rotating body 30 starts a high-speed reverse operation in which it rotates in the reverse direction at high speed (see step S38 in FIG. 8).
- the inner inclined rotating body 30 switches to high-speed forward operation in which it rotates forward at high speed (see step S40 in FIG. 9). Due to such an operation, when residual medicine remains on the inner inclined rotor 30, it is quickly transferred to the medicine conveying path of the annular upper end surface 23 of the outer rotor 20 and sent to the drop discharge port 14. ⁇
- the control unit 80 stops the rotation of both rotating bodies 20 and 30 (see step S42 in FIG. 9), and ends the drug discharge process. After that, we have to wait for manual drug replenishment.
- the operation mode to be stored in the operation mode storage unit 84E may include an operation to perform vibration excitation rotation control to vibrate and rotate the inner inclined rotor 30 before stopping the discharge operation.
- the operations performed before and after control are not limited to the above examples.
- the medicine ejection operation control unit rotates the inner inclined rotating body in the forward direction at a speed (high speed) higher than the rotation speed in the previous forward direction operation.
- a fast forward motion is performed to rotate, then a fast forward motion is performed, followed by a fast reverse motion in which the inner tilting rotor is rotated in the forward direction at a speed higher than the rotational speed during the reverse motion. You can do it.
- the forward direction operation for rotating the inner inclined rotating body in the forward direction and the reverse direction operation for rotating the inner inclined rotating body in the opposite direction to the forward direction operation are used for the vibration excitation rotation control.
- the amount of motion is alternately greater than the amount of motion in the reverse direction, but the amount of motion in the forward direction is substantially the same as the amount of motion in the reverse direction to cause the inner tilt rotor to oscillate.
- the medicine ejection operation control unit performs inner tilt rotation.
- An operation mode may be included that provides reverse control to rotate the body in reverse.
- the lateral width of the drug transport path of the annular upper end surface 23 of the outer rotating body 20 is expanded first, and then the vibration excitation rotation control of the inner inclined rotating body 30 is performed.
- other methods related to the rotation control of the outer rotating body 20 and the inner inclined rotating body 30, such as switching the rotation direction and changing the rotation speed, may be appropriately changed in execution order and execution time.
- the drug feeder of the present invention may be used to replace some or all of the multiple aligning disk rotation type drug feeders mounted on the tablet packaging machine, and only one or a few drug feeders are mounted. It may be installed in a tablet divider, or may be installed in a tablet counter (medicine counter) or the like that counts the number of medicines that are sequentially delivered in a device that fills medicine bottles with medicines such as tablets.
- a tablet counter medicine counter
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Abstract
Description
制御部80は(図1(A),図7(A)及び(B),特許文献2及び3参照)、初期化部81と、採寸部82と、剤数管理部83と、薬剤排出動作制御御部84を含んでいる。初期化部81は、手動操作や制御信号などで初期化指示を受けると、初期化を行って薬剤排出個数データなど種々のデータ値をクリアするとともに、各モータ(54a,54b,60a,70a)を初期状態にする。採寸部82は、薬剤採寸指示を受けると、進退駆動モータ70aを駆動して型置場74の薬剤5について幅や厚みを計測して、そのデータを取得して保持し、更にはそのデータを上位装置へ転送する。
以下、薬剤排出動作制御を実行するプログラムの動作モードのアルゴリズムを、図8及び図9に示したフローチャートを参照して説明する。
図8及び図9を用いて図7(B)に示した動作モード記憶部84Eに記憶した動作モードの一例を用いた動作を説明したが、本発明は上記に説明した動作モードを用いる場合に限定されるものではない。例えば、動作モード記憶部84Eに記憶する動作モードは、排出動作を停止する前に、内側傾斜回転体30を振動させつつ回転させる加振回転制御を行う動作を含んでいればよく、加振回転制御の前後で行う動作は、上記の例に限定されるものではない。例えば、動作モードとしては、加振回転制御の実行直後に、薬剤排出動作制御部が、内側傾斜回転体をそれ以前の順方向動作のときの回転速度よりも速い速度(高速)で順方向に回転させる高速順方向動作を行うようにし、次に高速順方向動作を行った後に、内側傾斜回転体を逆方向動作のときの回転速度よりも速い速度で順方向に回転させる高速逆方向動作を行うようにしてもよい。
Claims (12)
- 上方に向かって開口する開口部を有する内部空間及び前記開口部を囲む環状上端面を備え、前記内部空間内を上下方向に延びる仮想の縦線を中心として回転可能で、排出動作時に順方向に回転する外側回転体と、
前記外側回転体の前記内部空間内に配置され、複数の固形の薬剤を上面部に載せた状態で、前記縦線に対して傾いた仮想の傾斜線を中心として回転可能で、排出動作時に順方向に回転しているときに前記複数の薬剤を前記外側回転体の前記環状上端面上に移動させる内側傾斜回転体と、
前記外側回転体の前記環状上端面上に移動した複数の薬剤を、前記外側回転体が前記順方向に回転しているときに前記環状上端面の回転方向に沿って整列させる整列規制機構と、
前記外側回転体の回転制御と前記内側傾斜回転体の回転制御を行う制御部と、
前記外側回転体の前記順方向の回転によって落下排出口へ運ばれて落下した薬剤を検出する薬剤落下検出手段を備え、
前記制御部が、前記回転制御を行っているときに、前記薬剤落下検出手段の出力により前記薬剤を検出していない未検出時間間隔を測定する時間間隔測定部と、前記時間間隔測定部が測定した前記未検出時間間隔が、予め定めた最終規定時間間隔を超えると収容薬剤が無くなったと判定して排出動作を停止する薬剤排出動作制御部を備えている薬剤フィーダにおいて、
前記薬剤排出動作制御部は、前記排出動作を停止する前に、前記内側傾斜回転体を振動させつつ回転させる加振回転制御を行うように構成されていることを特徴とする薬剤フィーダ。 - 前記加振回転制御では、前記内側傾斜回転体を前記順方向に回転させる順方向動作と前記順方向とは逆の逆方向に回転させる逆方向動作を交互に行うことにより、前記振動を発生することを特徴とする請求項1記載の薬剤フィーダ。
- 前記順方向動作の動作量と前記逆方向動作の動作量は、前記加振回転制御を行う前における前記内側傾斜回転体の前記順方向動作の動作量と比べて微小な動作量である請求項2に記載の薬剤フィーダ。
- 前記加振回転制御における前記順方向動作の動作量が前記逆方向動作の動作量よりも多い請求項3に記載の薬剤フィーダ。
- 前記薬剤排出動作制御部が、前記加振回転制御の実行後直ぐに、前記内側傾斜回転体を前記排出動作時に前記順方向に回転しているときの回転速度よりも速い速度で前記逆方向に回転させる高速逆方向動作を行うことを特徴とする請求項2記載の薬剤フィーダ。
- 前記薬剤排出動作制御部が、前記高速逆方向動作を行った後に、前記内側傾斜回転体を前記排出動作時に前記順方向に回転しているときの回転速度よりも速い速度で前記順方向に回転させる高速順方向動作を行うことを特徴とする請求項5記載の薬剤フィーダ。
- 前記薬剤排出動作制御部は、
前記外側回転体の前記回転制御を実施する外側駆動部と、
前記内側傾斜回転体の前記回転制御を実施する内側駆動部と、
前記未検出時間間隔と予め定めた1以上の規定時間間隔に達したか否かを判定する判定部と、
前記判定部の判定結果に基づいて、前記外側駆動部及び前記内側駆動部に予め定めた複数の動作モードから選択された動作モードに従って駆動指令を与える駆動指令発生部を備えており、
前記動作モードに前記加振回転制御を行う動作モードが含まれている請求項2に記載の薬剤フィーダ。 - 前記複数の動作モードには、前記加振回転制御の実行後直ぐに、前記内側傾斜回転体を前記排出動作時に前記順方向に回転しているときの回転速度よりも速い速度で前記逆方向に回転させる高速逆方向動作を行い、前記高速逆方向動作を行った後に、前記内側傾斜回転体を前記排出動作時に前記順方向に回転しているときの回転速度よりも速い速度で前記順方向に回転させる高速順方向動作う動作モードが含まれている請求項7に記載の薬剤フィーダ。
- 前記複数の動作モードには、前記加振回転制御を実行する前に、前記未検出時間間隔が所定の1以上の前記規定時間間隔に達したことを前記判定部が判定すると、前記薬剤排出動作制御部が、前記内側傾斜回転体を逆回転させる逆方向動作を行う動作モードが含まれている請求項7に記載の薬剤フィーダ。
- 前記整列規制機構が、前記外側回転体の前記環状上端面の上に形成される薬剤搬送経路の横幅を規制するものであって、
前記薬剤排出動作制御部は、前記横幅の規制量を加減する加減指令を出力する加減指令発生部を備えており、
前記加減指令発生部は、前記加振回転制御の実行に先だって、前記時間間隔測定部が測定する未検出時間間隔が正常時間隔より長い予め定めた渋滞時間間隔に達すると、前記横幅を徐々に拡大させる前記加減指令を前記整列規制機構に出力することを特徴とする請求項1に記載の薬剤フィーダ。 - 前記加減指令発生部は、前記整列規制機構を駆動して前記横幅を拡大させた後に、前記薬剤落下検出手段が薬剤落下を検出すると、前記横幅を拡大前の寸法に戻す前記加減指令を前記整列規制機構に出力することを特徴とする請求項10に記載の薬剤フィーダ。
- 前記加減指令発生部は、前記横幅の拡大を段階的に行う前記加減指令を出力することを特徴とする請求項10に記載の薬剤フィーダ。
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JPH0436075B2 (ja) | 1983-02-03 | 1992-06-15 | Ingu* Chii Oribetsutei E Co Spa | |
JPH0436074B2 (ja) | 1984-06-22 | 1992-06-15 | Hitachi Ltd | |
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JP2017164560A (ja) * | 2015-11-30 | 2017-09-21 | 株式会社湯山製作所 | 薬剤払出装置 |
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