JPH06269486A - Medical bag and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] A method for manufacturing a medical bag under the conditions of aseptic and dust-free without any contact between the constituent materials of the medical bag and the outside air from the extrusion molding to the final product. A medical bag particularly suitable for dialysis in which an infusion port is attached to at least one part of the body. [Structure] A method for manufacturing a medical bag comprising the following steps. A step of extruding the constituent material of the medical bag into a tube shape in a high temperature state, a step of pressing the tube 4 at the inlet of the molding device 3 and fusing the tube 4 to form a fusing part having a passage,
A medical bag having a tube 4 filled with a chemical solution, a step of welding a passage to cut a fused portion, a step of attaching a mouth portion to the tube 4, and a fused portion formed at both ends,
The fusion bag at one end is composed of a wide fusion part and a narrow fusion part, and a mouth bag is attached near the narrow fusion part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical bag such as an infusion solution bag, a drug solution bag and a blood bag and a method for producing the same, and in particular, the constituent materials of the medical bag are extruded from the outside air to the final product. The present invention provides a method for producing a medical bag under aseptic and dust-free conditions without any contact with and a medical bag particularly suitable for dialysis in which an infusion port is attached to at least one position of a main body.

[0002]

2. Description of the Related Art Currently used medical bags are
Some bag bodies are made of two synthetic resin sheets, and some are made of tubular synthetic resin. In the former case, the peripheries of the two sheets are welded together with an infusion port or the like interposed between the two sheets to form a bag shape. On the other hand, in the latter case, the tube is cut into a predetermined size and an infusion port or the like is interposed in the opening end formed by cutting, and the opening end is welded to form a bag.

[0003]

However, in these methods, when the ends of the sheet or tube are welded to form a bag, the inner surface of the bag body is exposed to the outside air because an infusion port or the like is interposed at the end of the sheet or tube. Therefore, not only bacteria but also minute dust, cutting dust such as an infusion port, etc. may adhere to the inner surface of the bag body during that time, which is not preferable in terms of hygiene. Further, since the medical solution is filled after being formed as a medical bag, the number of manufacturing processes is increased, and there is a risk that the medical solution or the inside of the bag is contaminated when the medical solution is filled. Further, since a large area of the end portion of the sheet or tube is welded, a large amount of electric power is consumed and it is not always economical.
Therefore, the present inventor has arrived at the next invention as a result of intensive studies to solve the above problems.

[0004]

The present invention provides a method for manufacturing a medical bag, which comprises the following steps. A step of extruding the constituent material of the medical bag into a tube shape in a high temperature state, a step of pressing and fusing the tube at an inlet of a molding device to form a fused part having a passage, and a step of filling the tube with a chemical solution. A step of welding the passage and cutting the fused portion, a step of attaching a mouth portion to the tube,

The present invention is a medical bag having fusion-bonding portions formed at both ends, wherein the fusion-bonding portion at one end is composed of a wide fusion-bonding portion and a narrow fusion-bonding portion. Provided is a medical bag having a mouth portion mounted near the portion.

[0006]

In the first aspect of the invention, from the beginning to the final step, the medical bag is completely sterile and dust-free without the inside and inside of the medical solution filling the inside being in contact with the outside air. It can be manufactured. In addition, the liquid medicine can be filled at the same time as extrusion and molding of each component of the medical bag. In the second aspect of the invention, the infusion port can be easily attached, and the medicinal solution can be taken out simply by penetrating the wall of the bag (tube) with a needle.

[0007]

1 is a schematic view of a medical bag manufacturing apparatus according to the present invention. The manufacturing apparatus includes an extrusion molding machine 1, a mold 2, and a molding apparatus 3.
It consists of and. A sterile air supply line 5, a chemical solution supply line 6 and an air recovery line 7 are attached to the rear part of the mold 2, and the nozzles 5a and 7a of the sterile air supply line 5 and the air recovery line 7 are made of metal. The nozzle 6 a of the chemical liquid supply line 6 which is arranged in the lower portion of the mold 2 extends into the molding apparatus 3. Further, a sterile air supply line 6b is arranged in the chemical liquid supply line 6, and a nozzle 6c thereof is extended to near the lower portion of the molding apparatus 3.
The molding apparatus 3 comprises a drive shaft 8a and a conveyor 8b, and rollers 8 are provided on the surface of the conveyor 8b at predetermined intervals.

The molten resin is extruded from the extrusion molding machine 1 into the mold 2 and extruded into a tube 4 from the nozzle of the mold 2.
The tube 4 is conveyed to the molding apparatus 3 in a high temperature state, and is pressed by the roller 8 in the vicinity of the entrance of the molding apparatus 3 to form the fused portion 9. A passage 10 is provided at the center of the fused portion 9.
Are formed (see FIG. 2 (a view seen from an arrow A in FIG. 1)). The fusing parts 9 may be formed at equal intervals and in the same shape, but as shown in FIG. 2, wide fusing parts 9a and narrow fusing parts 9b are alternately formed.
As will be described later, it is desirable to make it easier for the liquid medicine inside to be discharged when the mouth is attached. The shape and the like of the fused portion 9 can be freely changed by adjusting the shape and arrangement of the rollers 8 mounted on the surface of the conveyor 8b.

Since the tube 4 is molded while supplying air through the aseptic air supply line 5, the tube 4 can maintain its expanded shape. In addition, the air collection line 7
Since it is possible to collect the additive (plasticizer, etc.) of the tube 4 that evaporates (vaporizes) from the high temperature tube 4 by communicating with the inside of the tube 4, the recovery line 7
After being molded as a medical bag, it is hygienic because it does not adhere to the inner surface of the medical bag. More tube 4
Since the drug solution is filled in a closed system while pushing out, dust and the like do not adhere to the inside of the tube 4, which is hygienic.

The chemical solution is supplied through the mold 2, but when passing through the mold 2, there is a risk of bumping or deterioration due to a rapid temperature rise. Before passing through the mold 2, it is preferable that the mold 2 be passed through the mold 2 in a warm state or after being heated and cooled once. While injecting a predetermined amount of the chemical liquid, the tube 4 is conveyed while being laid horizontally on a mounting table 11 adjusted to be horizontal as shown in FIG. Since the drug solution filling position is always higher than the drug solution level in the tube 4 which is being laid down, the tube 4 being carried can be densely filled with the drug solution, but the sterile air supply line 6 b A required amount of air can be injected from the nozzle 6c. As described above, by continuously extruding the tube filled with the drug solution in the same shape and horizontally, it is possible to mass-produce the medical bags uniformly filled with the drug solution, for example, in units of 100 units or 200 units.

The tube 4 filled with the chemical liquid welds the passage 10 as shown in FIG. 4, and the line B along the welded portion 12
Cut along. For example, as shown in FIG.
When a and the fusion-bonding portion 9b having a narrow width are alternately formed with the fusion-bonding portions 9 and 9 having the same width, the tube 4 as shown in FIG. 5 can be obtained.

A medical bag 15 as shown in FIG. 6 can be obtained by mounting the mouth portion 13 near the narrow fusion-bonded portion 9b of the tube 4 of FIG. 5 with an adhesive or the like.
Since the position of the mouth portion 13 of the medical bag 15 is set to a relatively lower end portion, the injection needle is inserted into the mouth portion 1 as shown in FIG.
When puncturing 3 and discharging the drug solution, the drug solution can be quickly discharged without remaining in the bag (tube).

[0013]

[Effects of the Invention] From the extrusion of each component of the medical bag to the manufacturing process of the medical bag of the final shape, the inside of the medical bag and the chemical liquid filling the inside do not come into contact with the outside air. Moreover, the medical bag can be manufactured in a sterile and dust-free state. Since the drug solution is extruded from each component of the medical bag and filled in a sterilized state at the same time as molding, it is hygienic and the manufacturing process can be greatly simplified, which is advantageous for mass production. Since the tube can be fused only by pressing the tube in a high temperature state and the passage having a much smaller area than the width of the tube can be sealed, the power consumption is small and the economical effect is high. It is hygienic because the additives in the constituent materials of the tube do not remain on the inner surface of the tube. Since the mouth is only attached to the surface of the main body with an adhesive, etc., it is easy to attach and the drug solution can be discharged just by penetrating the bag (tube) with a needle, and the scrap like the conventional rubber stopper can be removed. Since it does not come out, there is no worry of contaminating the inside of the main body and the chemical liquid. Further, since it can be manufactured separately from the main body, it is possible to employ a mouth portion that matches the size of the medical needle according to the purpose of infusion. Since the mouth portion is provided at the lower position of the end portion of the bag (tube), the drug solution inside can be smoothly discharged.

[Brief description of drawings]

FIG. 1 is a schematic view of a medical bag manufacturing apparatus of the present invention.

FIG. 2 is a schematic view of a tube formed by the apparatus of FIG. 1 (a view as seen from an arrow A in FIG. 1).

FIG. 3 is a schematic view of a process of filling the tube of FIG. 2 with a chemical solution.

FIG. 4 is a schematic view of a process of welding and cutting the tube of FIG.

FIG. 5 is a schematic view of the tube of FIG. 4 cut away.

6 is a schematic view of a medical bag in which the mouth portion is attached to the tube of FIG.

7 is a schematic view of the vicinity of the mouth of FIG.

[Explanation of sign]

 1 Extrusion Molding Machine 2 Mold 3 Molding Device 4 Tubes 5 and 6b Aseptic Air Supply Lines 5a and 6c Nozzles 6 Chemical Liquid Supply Lines 6a Nozzles 7 Air Recovery Lines 7a Nozzles 8 Rollers 8a Drive Shafts 8b Conveyor 9 Fusing part 9a Wide fusing part 9b Narrow fusing part 10 Passage 11 Tube mounting table 12 Welding part 13 Mouth part 14 Chemical solution 15 Medical bag

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[Procedure amendment]

[Submission date] December 28, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

The mouth portion 13 is provided near the narrow fusion-bonded portion 9b of the tube 4 of FIG. 5, for example, by the applicant in Japanese Patent Application No. 63-7752.
The medical bag 15 as shown in FIG. 6 can be obtained by mounting it using an adhesive or the like as proposed in No. 0 . Since the position of the mouth portion 13 of the medical bag 15 is set at a relatively lower position of the end portion, as shown in FIGS. 7 and 8.
When the injection needle 14 is pierced into the mouth 13 to discharge the drug solution, the drug solution can be quickly discharged without remaining in the bag (tube).

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

FIG. 7 is a schematic view of discharging the liquid medicine from the medical bag.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

8 is a schematic view of the vicinity of the mouth of FIG.

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

[Procedure correction 6]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

[Figure 8]

Claims (2)

[Claims] 1. A method for producing a medical bag, which comprises the following steps. A step of extruding the constituent material of the medical bag into a tube shape in a high temperature state, a step of pressing and fusing the tube at an inlet of a molding device to form a fused part having a passage, and a step of filling the tube with a chemical solution. A step of welding the passage and cutting the fused portion, a step of attaching a mouth portion to the tube, 2. A medical bag having fusion-bonding portions formed at both ends, wherein the fusion-bonding portion at one end is composed of a wide fusion-bonding portion and a narrow fusion-bonding portion. A medical bag characterized by a mouth attached near it.