JPS6169502A - Weighing distributor for powdered body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to an apparatus that can easily weigh and dispense a desired amount of a powder, especially a granular drug, and in particular, a device that can easily weigh and dispense a desired amount of a powder, especially a granular drug, and in particular, a device that can easily measure and dispense a desired amount of a powder, especially a granular drug, according to a prescription. Concerning a device capable of compounding.

(Conventional technology) Powder weighing and dispensing devices are mainly of the volumetric type.

There are flow rate type and weighing type. For example, as a volumetric type,
As shown in Fig. 3, the powder contained in the hopper 100 is first filled and distributed into the lots by the lower rotation of the hopper 100, and the hopper 101 is rotated horizontally and moved to the discharge port 1.
A horizontal rotary cup feeder 103 for taking out the distributed powder from the 02 is known. Further, as a flow rate type, for example, an auger intermittent type weighing and dispensing device 104 as shown in FIG. 4 is known. This consists of a hopper 105, an auger 106 built into the hopper 105, and a timer or rotation/number control means 107 connected to the auger 106. The dosage amount of the auger 106 is controlled by a timer or rotation/number control means 107, and a lower shutter 108 opens and closes in synchronization with the auger 106. For example, a balance-type dispensing device is known as a weighing type dispensing device. This is configured such that powder is thrown into a bucket from a hopper, and the opening and closing of a damper in the hopper is controlled by the movement of a balance whose weight is set in advance to a predetermined weight.

The above-mentioned conventional volumetric dispensing device has a simple structure and can be manufactured at low cost, but has low measurement accuracy and cannot freely change the measured value. therefore.

Especially in the pharmaceutical field, which requires highly accurate measurement.

This type of measurement using "umbrella" has not been used in the past. Moreover, in this volumetric type, it is not possible to measure and dispense multiple types of powder with one device.

In the field of pharmaceuticals, a weighing system that measures 3 weights is adopted, but in the flow-type weighing and dispensing device, the shape of the auger is required to ensure that the granules flow smoothly and to dispense a predetermined amount. is important, and it is extremely difficult to manufacture an auger in a desired shape.Furthermore, it is not possible to weigh and dispense multiple types of powder or granular drugs.Furthermore, the principle of the weighing type dispensing device is simple. However, the mechanism for synchronously interlocking each member is by no means simple.

Therefore, it has the disadvantage that management and maintenance are labor-intensive and costly. It is also impossible to weigh and dispense multiple types of powder or granular drugs.

On the other hand, single-tablet drugs are easy to handle, but
From this point of view, since there is a discontinuity in the quantity between tablets, it is not possible to ensure the optimal dosage for each individual patient.

It is preferred that the drug be in the form of granules rather than tablets in order to provide optimal dosing for each individual patient. Therefore, there is a strong desire for an apparatus that can accurately, easily, and inexpensively mix and dispense powdered or granular drugs.

(Objective of the Invention) An object of the present invention is to provide a granular drug dispensing device that can dispense an optimal amount of drug to each individual patient in a short period of time. Another object of the invention is.

An object of the present invention is to provide a granular drug dispensing device that can improve the workability of compounding drugs and reduce the labor of pharmacists. Still another object of the present invention is to provide a granular drug dispensing device that can measure and dispense multiple types of granules in a short period of time.

Still another object of the present invention is to provide a granular drug dispensing device having a simple structure.

Still another object of the present invention is to provide a dispensing device not only for granular drugs but also for powders in general.

(Structure of the Invention) The powder dispensing device of the present invention is characterized in that it is capable of dispensing powder, especially granular drugs, using an umbrella, and includes a plurality of upright cylinders each having an outlet on the side wall. A measuring section having a piston that can reciprocate while being in close contact with the inner wall of the cylinder; and a measuring mechanism section that moves the piston to form a space of a desired volume between the top surface of the piston and the inner wall surface of the cylinder; The above objective is achieved.

(Example) The present invention will be described below with reference to examples.

The weighing, weighing and dispensing device of the present invention has a weighing section 1 and a weighing mechanism section 2, as shown in FIGS. 1 and 2.

The measuring section 1 includes a plurality of (here, 2, for example, 7) upright cylinders 11 and a piston 12 that can reciprocate within the cylinder 11 while being in close contact with the inner wall of each cylinder 11. On the opening surface 112 of the cylinder 11, there is a powder scraping member 1 that can slide closely against this opening surface 112.
3 is provided. This powder scraping member 13 is
For example, the cylinder outer wall 113
It engages with the cylinder 11 in a pinching manner through an engagement groove 114 provided in the figure, and slides on the cylinder opening surface 112 manually or by driving means (not shown). The upper part of the cylinder opening is preferably formed in the form of a mortar so that the powder to be metered and dispensed is deposited therein. each cylinder 1
A powder outlet 110 is provided on the side wall of 1 with an appropriate slope. The top surface 120 of each piston 12 is inclined at the same angle as the powder outlet 110, and the piston 1
When the top surface 120 of No. 2 is aligned with the lower end surface 111 of the powder outlet 110, the two surfaces 120 and 111 form substantially the same surface.

The metering mechanism section 2 moves the piston 12 a desired distance within the cylinder 11, and forms a space 10 of a desired volume between the piston top surface 120 and the inner wall of the cylinder 11. For this purpose, this metering mechanism section 2 has, for example, 9.

Stroke variable plate 14 located below the piston 12
and a moving means 15 for moving the variable stroke plate 14 by a required distance in a direction perpendicular to the driving direction of the piston 12. The variable stroke plate 14 is provided with an inclined surface 141 having an appropriate inclination angle, and the lower end portion 121 of the piston is directly attached to this inclined surface 141 or the rotating body 1 is attached to the inclined surface 141.
22. The moving means 15 includes a fixing member 151 that fixes the variable stroke plate 14, and a fixing member 151 that fixes the variable stroke plate 14.
51 in a direction perpendicular to the driving direction of the piston 12.

It has a measuring member 153 for moving the fixing member 151 along the guide rail 152 to form a space 10 of a desired volume within the cylinder 11. The metering member 153 is, for example, a male threaded rod 15 that is threadedly engaged with the fixing member 151.
4 and a female thread 155 that threadably engages with this threaded rod 154. A measuring scale plate 156 is provided on the female thread 155, and the stroke variable plate 14 is adjusted by rotating the female thread 155.
Therefore, the moving distance of the piston 12 can be set and adjusted accurately. Instead of the measuring member 153 for moving the variable stroke plate 14 a predetermined distance, the fixed member 151 or the variable stroke plate 14 may be connected to a computer to move the variable stroke plate 14 a required distance according to preset programming.

Powder is measured and distributed using the above device, for example, as follows: First, while looking at the measuring scale plate 156, turn the screw 155 clockwise by a predetermined distance, and move the variable stroke plate 14 through the fixed member 151. Move horizontally by a predetermined distance to the left in the drawing. Accordingly, the piston 12 moves downward a predetermined distance along the inclined surface 141 of the variable stroke plate 14. As a result, a space 10 with a desired volume is formed between the piston top surface 120 and the cylinder 11.

The powder to be metered and dispensed is then heaped onto the opening of the cylinder 11. The space 10 is filled with powder. The powder scraping member 13 is moved along the cylinder opening surface 112 to remove excess powder from the top of the device. In this way, the space 10 of each cylinder 11 is filled with a predetermined amount of powder. Next, the piston 12 is further lowered by a predetermined distance by a similar operation to form a space of a predetermined volume within the cylinder 11. This space is filled with a predetermined amount of another type of powder by a similar operation. Then, the measuring member 153 is further turned to the right by a predetermined distance, and the variable stroke plate 14 is horizontally moved to the left. As a result, the piston 12 descends and its top surface 120 aligns with the opening lower end surface 111 of the powder outlet 110 on the side wall of the cylinder 11. The two types of predetermined amounts of powder in the cylinder 11 slide on the top surface 120 of each cylinder and are taken out from the takeout port 110. When the outlet 110 is connected to a packaging machine (not shown), the predetermined amount of powder can be sealed by heat sealing or the like. When the powder is a granular drug, it can be mixed and fractionated in exactly the same manner. The term granular here refers to one example.

Mean particle size is in the range of 0.2m to 2n.

(Effects of the Invention) According to the present invention, a plurality of types of powder can be measured and distributed in a short time using the same device. When the powder is a granular drug, it is possible to prepare (mix and dispense) the optimum amount of drug for each individual patient, and the workability of the preparation is extremely high.

Pharmacist's labor can be significantly reduced. The device has a simple configuration and is easy to operate.

4. Figures 1 and 2 are respectively a perspective view and a sectional side view showing an embodiment of the device of the present invention, and Figures 3 and 4 are perspective views of a conventional weighing and dispensing device, respectively. and a cross-sectional front view.

DESCRIPTION OF SYMBOLS 1... Measuring part, 2... Measuring mechanism part, 10... Cylinder internal space, 11... Cylinder, 12... Piston, 13... Powder scraping member, 14... Stroke variable plate, 15... moving means, 110... powder outlet, 120... piston top surface, 121...
Piston lower end, 141... Inclined surface of variable stroke plate, 151... Fixed member, 152... Guide rail,
153... Measuring means, 154... Threaded rod, 156.
...Measuring scale plate.

that's all

Claims (1)

[Scope of Claims] 1. A measuring unit having a plurality of upright cylinders each having a take-out port on a side wall and a piston that can reciprocate while being in close contact with the inner wall of the cylinder; A powder dispensing device comprising a metering mechanism that forms a space of a desired volume with the inner wall surface of the cylinder. 2. The device according to claim 1, wherein the measuring section includes a powder scraping member that can closely slide on the cylinder opening surface. 3. The device according to claim 1, wherein the outlet of the cylinder side wall and the top surface of the piston are inclined at the same angle. 4. The metering mechanism includes a variable stroke plate provided below the piston with an inclined surface on which the lower end of the piston can abut, and the variable stroke plate is moved a desired distance in a direction orthogonal to the sliding direction of the piston. 2. A device according to claim 1, further comprising moving means for moving the cylinder by a desired volume of space, thereby creating a desired volume of space within the cylinder. 5. The device according to claim 1, wherein the powder is a granular drug.