Patent Application
20240277577
The present disclosure relates to a drug supply apparatus.
Patent Literature (hereinafter, referred to as PTL) 1 describes a drug supply apparatus that discharges drugs specified by a prescription from a plurality of tablet cases arranged in the up-down direction and front-rear direction, collects the discharged drugs in a hopper disposed below these tablet cases and wraps the drugs in packaging paper.
Publication of Utility Model Application S57-2241
In the drug supply apparatus of PTL 1, as the number of tablet cases arranged in the front-rear direction increases, for example, the length of the hopper becomes longer in the front-rear direction, thereby increasing the size of the hopper. This configuration makes the hopper difficult to handle. In addition, when the conveyance speed of a drug is lowered while being conveyed by the hopper and thus the timing at which the drug is led out from the hopper is delayed, the timing at which the drug is packaged and the timing at which the drug is provided to the patient are also delayed.
For addressing such problems, a chute for conveying drugs is disposed between the tablet case and the hopper. The chute is formed, for example, in such a way that drugs are conveyed along the left-right direction, and that the width of the chute in the front-rear direction becomes smaller toward the downstream side in the chute.
In this case, as the number of tablets arranged in the front-rear direction increases, the width of the chute in the front-rear direction increases on the upstream side. Accordingly, the difference between the width of the chute in the front-rear direction on the upstream side and the width of the chute in the front-rear direction on the downstream side, that is, the change rate in the width of the chute in the front-rear direction increases. This configuration may prevent the chute from conveying drugs smoothly. Specifically, the speed of a drug slows down as it travels along the side wall that defines the width of the chute in the front-rear direction, or when the drug hits the side wall, it bounces off in a direction that is significantly different from the conveyance direction. As a result, when the timing at which the drug is led out from the chute is delayed, the timing at which the drug is provided to the patient is also delayed.
An object of the present disclosure is provide a drug supply apparatus capable of smoothly supplying drugs.
A drug supply apparatus in the present disclosure includes a plurality of tablet cases for discharging a drug and lined up in a front-rear direction of the drug supply apparatus, and a chute disposed at a position lower than a position of the plurality of tablet cases and including a path for conveying the drug, the chute conveying the drug while preventing the drug from spilling from a front side and a rear side of the chute. In the drug supply apparatus, the width of the chute in the front-rear direction becomes smaller toward the downstream side in the chute, and the path includes a bent part having a shape such that the bent part is bent when viewed from the front side.
The drug supply apparatus of the present disclosure can smoothly supply drugs.
Hereinafter, at least one embodiment of the drug supply apparatus of the present disclosure will be described with reference to the drawings. In the following description, as indicated by the arrows in
First floor part 10 includes operation part 11 and take-out part 12. In addition, first floor part 10 includes input part (not illustrated).
Operation part 11 is a device to be operated by an operator, and includes, for example, a display, operation buttons, and the like. Various information is input to drug supply apparatus 1 as the operator operates operation part 11.
A drug (herein, a drug may be more than one drug) packaged in drug supply apparatus 1 is taken out from take-out part 12. Take-out part 12 includes an opening, and the operator takes out the drug from the opening.
The input part is an input device for receiving various information input from an external device. The input part is connected to, for example, a personal computer, and receives input from the personal computer, for example, information on a prescription issued at a medical institution.
The plurality of shelves 13 are each configured to store the plurality of tablet cases C in second floor part 20. The plurality of shelves 13 are disposed in such a way that each shelf is pulled out along the front-rear direction by operating handle 13a. Drug supply apparatus 1 includes 30 shelves 13. The plurality of shelves 13 are arranged in five stages in the up-down direction and in six rows in the left-right direction. The number and arrangement of shelves 13 provided in second floor part 20 are not limited to those of the present embodiment, and the number of stages in the up-down direction and/or the number of rows in the left-right direction may be more or less than those described above.
A plurality of tablet cases C are stored in each shelf 13 so as to be arranged along the front-rear direction of shelf 13 on both sides of shelf 13 in the left-right direction. Each tablet case C stores a plurality of drugs. Each tablet case C is configured to discharge one tablet of a drug at a time.
The drug discharged from tablet case C falls through a passage and is led into first floor part 10. A passage is provided so as to penetrate each shelf 13 in the up-down direction. The plurality of shelves 13 are arranged in six rows in the left-right direction as described above. That is, drug supply apparatus 1 includes six passages, namely, first to sixth passages W1 to W6. First to sixth passages W1 to W6 are each formed to extend along the front-rear direction so as to correspond to tablet cases C arranged in the front-rear direction.
Chute units 14 are disposed at first floor part 10, that is, at positions lower than those of tablet cases C, and are configured to lead drugs led out from first to sixth passages W1 to W6 into hopper 15. Drug supply apparatus 1 includes two chute units 14. The two chute units 14 are disposed side by side along the left-right direction of drug supply apparatus 1. Two chute units 14 are formed similarly to each other, and are disposed symmetrically when viewed from the front of drug supply apparatus 1, that is, from the front side.
Chute unit 14 disposed on the left side of drug supply apparatus 1 receives drugs led out from first to third passages W1 to W3 and leads the drugs into hopper 15. Chute unit 14 disposed on the right side of drug supply apparatus 1 receives drugs led out from fourth to sixth passages W4 to W6 and leads the drugs into hopper 15. Naturally, the number of chute units 14 and which chute unit 14 receives drugs discharged from which passage are not limited to the configuration described above. Details of chute unit 14 will be described below.
Hopper 15 is configured to receive a drug led out from chute unit 14, and lead the received drug through outlet 15a into packaging unit 16. Outlet 15a is provided approximately at the center portion of hopper 15. Hopper 15 includes shutter 15b that opens and closes outlet 15a.
Packaging unit 16 is configured to package a plurality of drugs led out from hopper 15. Packaging unit 16 includes conveying part 16a, printer 16b, and sealing device 16c.
Conveying part 16a is, for example, a device that feeds out packaging paper from a roller (not illustrated) around which the packaging paper is wound, and conveys the fed out packaging paper toward sealing device 16c. The packaging paper is, for example, strip-shaped packaging paper having been folded in half. The drugs led out from hopper 15 is placed on packaging paper and is conveyed together with the packaging paper toward sealing device 16c.
Printer 16b is a printing machine for printing, for example, the patient's name, the name of the drug to be supplied in the packaging paper fed out from the roller, the date and time of administration, and the like on the surface of the packaging paper.
Sealing device 16c is for sealing the packaging paper in which a drug is wrapped.
The packaging paper in which the drug is enclosed is, for example, cut with predetermined timing and conveyed toward take-out part 12 by a predetermined device.
In the following, chute unit 14 will be described.
In the following, the configurations of first rear chute 30a, second rear chute 40a, and third rear chute 50a will be described with “a” added to the end of the reference numerals thereof. In
As illustrated in
First inlet 35a is formed to open upward at the left end portion of first rear chute 30a. A drug led out from fourth passage W4 is introduced into first inlet 35a. First inlet 35a is formed so as to correspond to the arrangement direction of tablet cases C stored on shelf 13, that is, the front-rear direction thereof is the longitudinal direction.
As illustrated in
In first rear chute 30a, a path through which a drug is conveyed is formed so as to be surrounded by first bottom wall 31a, first front wall 32a, first rear wall 33a, and first top wall 34a.
First bottom wall 31a is disposed to be inclined so that a drug travels on the plate surface of first bottom wall 31a from the upper side to the lower side as the drag travels from the upstream side (the first inlet 35a side) to the downstream side (the first outlet 36a side). First front wall 32a and first rear wall 33a are disposed to face each other in the front-rear direction of first rear chute 30a so as to prevent a drug from spilling from the front and rear sides. In addition, first front wall 32a and first rear wall 33a guide a drug from first inlet 35a to first outlet 36a. The width of first rear chute 30a in the front-rear direction becomes smaller toward the downstream side. Specifically, first rear wall 33a includes first inclined surface 37a that is inclined so that the width of first rear chute 30a in the front-rear direction becomes smaller toward the downstream side.
In addition, first inclined surface 37a is formed in such a way that the inclination angle with respect to the left-right direction is 45 degrees or less. This configuration allows first rear chute 30a to smoothly convey a drug, as described in detail below. Herein, the inclination angle of first inclined surface 37a with respect to the left-right direction is the angle with respect to the left-right direction when viewed along the direction orthogonal to the plate surface of first bottom wall 31a.
First top wall 34a is disposed to face first bottom wall 31a so as to more reliably prevent a drug from spilling from the front or rear side.
Second rear chute 40a is disposed on the right side of chute unit 14. In a similar manner as first rear chute 30a, second rear chute 40a is formed by second bottom wall 41a, second front wall 42a, second rear wall 43a, and second top wall 44a, and second rear chute 40a includes second inlet 45a and second outlet 46a.
A drug led out from sixth passage W6 is introduced into second inlet 45a. Second rear chute 40a, unlike first rear chute 30a, conveys a drug from the right side to the left side. That is, second inlet 45a is formed at the right end portion of second rear chute 40a, and second outlet 46a is formed at the left end of second rear chute 40a and below second inlet 45a.
In second rear chute 40a, a path through which a drug is conveyed is formed so as to be surrounded by second bottom wall 41a, second front wall 42a, second rear wall 43a, and second top wall 44a. The distance in the left-right direction between second inlet 45a and second outlet 46a in second rear chute 40a is larger than the distance in the left-right direction between first inlet 35a and first outlet 36a in the first rear chute 30a. Accordingly, the length of the path through which a drug is conveyed in second rear chute 40a is larger than the length of the path of first rear chute 30a.
In addition, the inclination angle of second bottom wall 41a with respect to the horizontal direction is smaller than the inclination angle of first bottom wall 31a with respect to the horizontal direction. Furthermore, the inclination angle of second inclined surface 47a of second rear wall 43a in second rear chute 40a with respect to the left-right direction is smaller than the inclination angle of first inclined surface 37a in first rear chute 30a with respect to the left-right direction, and is less than 45 degrees.
Third rear chute 50a is disposed at the center portion of chute unit 14 in the left-right direction. Third rear chute 50a receives a drug led out from fifth passage W5 and leads the drug into shutter part 60. Path R for conveying a drug in third rear chute 50a is indicated by a thick arrow in
Upstream chute 70a is disposed upstream of connecting part 80a. As illustrated in
Third inlet 75a is formed to open upward at the upper end portion of third rear chute 50a. A drug led out from fifth passage W5 is introduced into third inlet 75a. Third inlet 75a is formed so as to correspond to the arrangement direction of tablet cases C stored on shelf 13, that is, the front-rear direction thereof is the longitudinal direction.
In upstream chute 70a, path R through which a drug is conveyed is formed so as to be surrounded by third bottom wall 71a, third front wall 72a, third rear wall 73a, and third top wall 74a.
As illustrated in
Third front wall 72a and third rear wall 73a are disposed to face each other in the front-rear direction of upstream chute 70a so as to prevent a drug from spilling from the front and rear sides. In addition, third front wall 72a and third rear wall 73a guide a drug from third inlet 75a to connecting part 80a. The width of upstream chute 70a in the front-rear direction becomes smaller toward the downstream side. Specifically, third rear wall 73a includes third inclined surface 76a that is inclined so that the width of upstream chute 70a in the front-rear direction becomes smaller toward the downstream side.
The symbol α illustrated in
Third top wall 74a illustrated in
Connecting part 80a connects upstream chute 70a with downstream chute 90a, and leads a drug, having passed through upstream chute 70a, into downstream chute 90a. As illustrated in
In connecting part 80a, path R through which a drug is conveyed is formed so as to be surrounded by bouncing wall 81a, fourth front wall 82a, and fourth rear wall 83a. Path R formed in connecting part 80a includes bent part B having a shape such that the bent part is bent when viewed from the front side. As illustrated in
Bouncing wall 81a bounces a drug, having passed through upstream chute 70a, toward downstream chute 90a. Specifically, bouncing wall 81a is disposed so that the plate surface thereof faces diagonally downward. Accordingly, a drug is reliably bounced toward downstream chute 90a by bouncing wall 81a.
Fourth front wall 82a and fourth rear wall 83a are disposed to face each other in the front-rear direction of connecting part 80a so as to prevent a drug from spilling from the front and rear sides of the chute. Fourth front wall 82a and fourth rear wall 83a guide a drug, having passed through upstream chute 70a, to downstream chute 90a. The width of connecting part 80a in the front-rear direction becomes smaller toward the downstream side. Specifically, the angle between the plate surface of fourth rear wall 83a and the vertical direction is set to be 45 degrees or less.
Downstream chute 90a is disposed downstream of connecting part 80a. As illustrated in
Third outlet 95a is formed at the lower end portion of third rear chute 50a and below third inlet 75a. Third outlet 95a leads a drug, having passed through downstream chute 90a, into shutter part 60 via first rear chute 30a. The distance in the left-right direction between third outlet 95a and third inlet 75a is smaller than the distance in the left-right direction between first outlet 36a and first inlet 35a in first rear chute 30a.
In downstream chute 90a, path R through which a drug is conveyed is formed so as to be surrounded by fourth bottom wall 91a, fifth front wall 92a, fifth rear wall 93a, and fourth top wall 94a.
Fourth bottom wall 91a is disposed to be inclined so that a drug travels on the plate surface of fourth bottom wall 91a from the upper side to the lower side as the drag travels from the upstream side (the connecting part 80a side) to the downstream side (right side: the third outlet 95a side).
Fifth front wall 92a and fifth rear wall 93a are disposed to face each other in the front-rear direction of downstream chute 90a so as to prevent a drug from spilling from the front and rear sides. In addition, fifth front wall 92a and fifth rear wall 93a guide a drug, having passed through connecting part 80a, to third outlet 95a. The width of downstream chute 90a in the front-rear direction becomes smaller toward the downstream side. Specifically, fifth rear wall 93a is formed to include fourth inclined surface 96a that is inclined so that the width of downstream chute 90a in the front-rear direction becomes smaller toward the downstream side. In addition, fourth inclined surface 96a is formed to face diagonally upward.
The symbol β illustrated in
In addition, the change rate of the width of upstream chute 70a in the front-rear direction is smaller than the change rate of the width of downstream chute 90a in the front-rear direction. Specifically, the upstream inclination angle α is set to be smaller than the downstream inclination angle β. Furthermore, the upstream inclination angle α and the downstream inclination angle ß are set to be 45 degrees or less. This configuration allows third rear chute 50a to smoothly convey a drug, as described in detail below.
Fourth top wall 94a illustrated in
Shutter part 60 includes cylindrical member 61 and shutter 62. Cylindrical member 61 includes openings on the upper side and the lower side thereof, and a drug passes through cylindrical member 61. Shutter 62 opens and closes the opening of cylindrical member 61. When shutter 62 is in the closed state, the drug can be stored. When shutter 62 is in the opened state, the drug is led into hopper 15.
In addition, as illustrated in
Rotating member 100 stores a drug introduced from third inlet 75a and, by rotating, sends out the stored drug to the downstream side in upstream chute 70a. Rotating member 100 includes shaft member 101, storage part 102, and delivery part 103.
Shaft member 101 is disposed so that the axis line thereof extends in the front-rear direction and is disposed to be rotatable about the axis line with respect to upstream chute 70a. Shaft member 101 is rotated by, for example, a stepping motor (not illustrated).
Storage part 102 is for storing drugs. Storage part 102 protrudes from shaft member 101 toward the outside and has a plate shape that extends in a direction along the axis line of shaft member 101.
Delivery part 103 is configured to send out the drug stored by storage part 102. Delivery part 103 protrudes toward the outside from shaft member 101 at a position different from the position, from which storage part 102 protrudes, in the circumferential direction of shaft member 101. Delivery part 103 has a plate shape that extends in a direction along the axis line of shaft member 101.
Storage part 102 and delivery part 103 each include a tip portion formed from an elastic material, such as rubber. With this configuration, even when the tips of storage part 102 and delivery part 103 come into contact with third bottom wall 71a and third top wall 74a, the rotation of rotating member 100 is not hindered. Storage part 102 and delivery part 103 may be formed of brushes.
Rotating member 100 stores drugs when rotating member 100 is located at a storage position where the tip of storage part 102 faces third bottom wall 71a, and the tip of delivery part 103 faces third top wall 74a. Specifically, storage part 102 stores a drug by blocking the drug introduced from third inlet 75a. When rotating member 100 rotates clockwise in
In the following, the movement of drugs conveyed by third rear chute 50a will be described. Drugs led out from fifth passage W5 are introduced into third inlet 75a. The drugs are stored by storage part 102 of rotating member 100 located at the storage position.
As rotating member 100 rotates clockwise in
The drugs having passed through upstream chute 70a travel downstream through connecting part 80a. Some of the drugs hit bouncing wall 81a and are bounced downward by bouncing wall 81a.
The drugs are led out from connecting part 80a into downstream chute 90a, and travel downstream along fourth bottom wall 91a. Some of the drugs travel along fourth inclined surface 96a or hit fourth inclined surface 96a and bounce.
As described above, the upstream inclination angle α and the downstream inclination angle β are set to be 45 degrees or less. This configuration can prevent the following problems: the speed of a drug slows down when the drug travels along inclined surface 76a or 96a, or when a drug hits inclined surface 76a or 96a, the drug bounces in a direction that is significantly different from the conveyance direction.
In addition, the distance in the left-right direction between third inlet 75a and third outlet 95a in third rear chute 50a is relatively short. In such a case, when third rear chute 50a does not include connecting part 80a, the path for conveying a drug does not include bent part B, thereby shortening the length of the path as compared to the case where third rear chute 50a includes connecting part 80a. As a result, the change rate of the width of third rear chute 50a in the front-rear direction would increase.
Specifically, the inclination angle of the inclined surface of the side wall with respect to the left-right direction would increase. As a result, when the inclination angle exceeds 45 degrees, third rear chute 50a cannot smoothly convey a drug. Specifically, a drug cannot be smoothly conveyed from the following reasons: the speed of the drug slows down when the drug travels along an inclined surface, or when the drug hits the inclined surface, the drug bounces in the direction significantly different from the conveyance direction.
Herein, as third rear chute 50a includes connecting part 80a, the path for conveying a drug includes bent part B, thereby increasing the length of the path as compared to the case where third rear chute 50a does not include connecting part 80a. As a result, the change rate of the width of third rear chute 50a in the front-rear direction decreases. Specifically, the upstream inclination angle α and the downstream inclination angle ß decrease. That is, even in a case where the distance in the left-right direction between third inlet 75a and third outlet 95a is relatively short, the upstream inclination angle α and the downstream inclination angle ß can be set to be 45 degrees or less. Therefore, third rear chute 50a can smoothly convey a drug. In other words, third rear chute 50a can prevent the following problems: the speed of a drug slows down when the drug travels along an inclined surface, or when a drug hits the inclined surface, the drug bounces in a direction that is significantly different from the conveyance direction.
In addition, as a drug is sent out by delivery part 103, the speed of the drug is larger on the upstream side than on the downstream side in third rear chute 50a. The length of the rebound when a drug hits third inclined surface 76a of upstream chute 70a is greater than when the drug hits fourth inclined surface 96a of downstream chute 90a.
Herein, the upstream inclination angle α is set to be smaller than the downstream inclination angle β as described above. This configuration can reduce the length of rebound in upstream chute 70a when a drug hits third inclined surface 76a. Therefore, the following can be prevented: the timing at which the drug is led out is delayed due to the drug bouncing far away in the direction significantly different from the conveyance direction.
The drug is led out from downstream chute 90a into shutter part 60 via first rear chute 30a. When the shutter is in the opened state in shutter part 60, the drug is led into hopper 15.
The present disclosure is not limited to the embodiment described above. Various modifications to the present embodiment are also included within the scope of the present disclosure, as long as they do not depart from the spirit of the present disclosure.
For example, third chute 50 has a square cross section, but may have a circular cross section, a U-shaped cross section, or a V-shaped cross section. That is, upstream chute 70a may be formed of a side wall that does not have a portion that can clearly distinguish third bottom wall 71a, third front wall 72a, third rear wall 73a, and third top wall 74a from each other.
Upstream chute 70a, connecting part 80a, and downstream chute 90a are integrated; however, those components may be separate bodies. Third chute 50 may be formed by upstream chute 70a and downstream chute 90a without including connecting part 80a. In this case, downstream chute 90a is formed to receive a drug having passed through upstream chute 70a.
Path R may have a shape such that path R is bent at bent part B, not being folded back. In this case, in a top view of third rear chute 50a, connecting part 80a is formed in such a way that third inlet 75a and third outlet 95a are located on opposite sides with connecting part 80a therebetween.
Bouncing wall 81a may face in a direction other than diagonally downward. The connecting part 80a does not need to include bouncing wall 81a.
The change rates of widths of upstream chute 70a, connecting part 80a, and downstream chute 90a in the front-rear direction may not be constant. Specifically, in third rear chute 50a, front walls 72a, 82a, 92a and rear walls 73a, 83a, 93a may have a curved plate shape.
Chute unit 14 does not need to include rotating member 100. In this case, drugs pass through first to third chutes 30 to 50 only by their own weights. The speed of the drug thus increases toward the downstream side in the chute. Therefore, the length of the rebound when a drug hits fourth inclined surface 96a of downstream chute 90a is greater than when the drug hits third inclined surface 76a of upstream chute 70a.
The change rate of the width of downstream chute 90a in the front-rear direction then may be set to be smaller than the change rate of the width of upstream chute 70a in the front-rear direction. Specifically, the downstream inclination angle ß may be set to be smaller than the upstream inclination angle α. This configuration can reduce the length of rebound in downstream chute 90a when a drug hits fourth inclined surface 96a. Therefore, the following can be prevented: the timing at which the drug is led out is delayed due to the drug bouncing far away in the direction significantly different from the conveyance direction. This application is entitled to and claims the benefit of Japanese Patent Application No. 2021-176521 filed on Oct. 28, 2021, the disclosure of which including the specification, drawings, and abstract is incorporated herein by reference in its entirety.
The present invention is widely available for drug supply apparatuses.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-176521 | Oct 2021 | JP | national |
This application is a Continuation of International Patent Application No. PCT/JP2022/039549, filed on Oct. 24, 2022, which in turn claims the benefit of Japanese Patent Application No. 2021-176521, filed on Oct. 28, 2021, the entire disclosure of which Applications are incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/JP2022/039549 | Oct 2022 | WO |
| Child | 18638153 | US |
