JP3113082B2 - Medical bag and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical bag for storing blood, a drug solution, and the like, and an improvement in a method for manufacturing the medical bag.

[0002]

2. Description of the Related Art A medical bag currently used is constructed by welding a protector 34 having an infusion port 33 mounted on an upper portion of a bag-shaped main body 32. For this reason, the production has been performed by the following steps.

(1) A step of forming two synthetic resin sheets 36 into a hat-shaped protector 34 by a forming machine and further loading an infusion port 33 mounted on a jig 37 into the protector 34 (FIG. 4). (2) The protector 34 of (1) is placed between the two synthetic resin sheets 36, and the protector 34 and the infusion port 3 are placed.
A step of pressing the base portion 35 and the upper end of the sheet 36 in contact with them with the upper and lower mouth molds 38 to weld them (FIG. 5); (Not shown) to form the bag-shaped main body 32 (FIG. 6),

However, there are the following problems in manufacturing these medical bags. When the protector 34 is welded to the sheet 36 in the step (2), the protector 34 attached to the jig 37 must be inserted from the lower side of the sheet 36. May adhere. In the step (2), it is difficult to adjust the welding strength when the protector 34 and the sheet 36 are welded, and there has been a medical bag in which a thin portion is formed in the welded portion 40 and liquid leakage or the like occurs. The inventor of the present invention has made intensive studies in order to solve the above-mentioned problems, and has arrived at the following invention.

[0005]

SUMMARY OF THE INVENTION The present invention provides a series of the same material.
The bag-like body 2 and the protector 4 are melted by the continued sheet 6.
It is divided by the attachment part and integrally molded, and the protector 4
The infusion port 3 is sealed inside and the base 5 of the infusion port 3 is
The present invention provides a medical bag 1 welded and fixed to an upper portion of a bag-shaped main body 2.

The present invention provides a method for manufacturing the medical bag 1 comprising the following steps. (1) a step of placing the infusion port 3 between two synthetic resin sheets 6 and pressing and welding the base 5 of the infusion port 3 and the sheet 6 in contact with the base with upper and lower mouth dies 8; 2) a step of pressing the sheet 6 of the above (1) with upper and lower molds to integrally form the bag-shaped main body 2 and the protector 4 covered with the infusion port 3 above the main body;

[0007]

The bag 6 and the protector 4 can be simultaneously formed by welding the sheet 6 and the infusion port 3 .

[0008]

DETAILED DESCRIPTION FIG. 1 is a schematic view of the medical bag 1 of the present invention,
The medical bag 1 is made of the same material made of a flexible synthetic resin.
The bag-shaped body 2 and the protector 4 are melted by the continuous sheet.
It is divided by the attachment part and integrally molded, and the protector 4
The infusion port 3 is sealed inside. The base 5 of the infusion port 3 is welded and fixed to the upper part of the main body 2.

Next, a method of manufacturing the medical bag 1 will be described. As shown in FIG. 2, two synthetic resin sheets 6
The infusion port 3 attached to the jig 7 is placed from above the sheet 6, and the base 5 of the infusion port 3 and the sheet 6 in contact therewith are pressed and welded by the upper and lower mouth dies 8. In FIG. 2, reference numeral 11 denotes a connecting member to the infusion tube.

Next, as shown in FIG. 3, the sheet 6 is pressed by upper and lower molds (not shown) to integrally form the bag-shaped main body 2 and the protector 4 having the infusion port 3 covered thereon. Molding. Finally, the welded parts 9 and 10 of the protector 4 and the main body 2 are press-cut to separate the medical bag 1 from the sheet 6. At the same time, the notch 1
2. The breaking line 13 can be formed.

[0011]

As described above, according to the present invention, the bag-shaped main body 2 and the protector 4 are made of a continuous sheet of the same material.
6, it is possible to simplify the process as compared with the conventional method, and it is suitable for mass production, and the cost can be reduced. In addition, since the infusion port 3 is inserted from above the sheet 6 when the infusion port 3 is mounted, the chance of minute dust or the like adhering to the inside of the sheet 6 is extremely reduced, and the hygiene is further improved.

[Brief description of the drawings]

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

FIG. 2 is a schematic view showing a method for manufacturing the medical bag of FIG. 1;

FIG. 3 is a schematic view showing a method of manufacturing the medical bag of FIG. 1;

FIG. 4 is a schematic view showing a conventional method for manufacturing a medical bag.

FIG. 5 is a schematic view showing a conventional method for manufacturing a medical bag.

FIG. 6 is a schematic view showing a conventional method for manufacturing a medical bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Medical bag 2 Bag-shaped main body 3 Infusion port 4 Protector 5 Base of infusion port 6 Sheet 7 Jig 8 Port mold 9 Welding part 10 Welding part

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61J 1/10

Claims (2)

(57) [Claims] 1. A bag-shaped main body 2 and a protector 4 are divided by a welded portion by a continuous sheet 6 of the same material and integrally formed, and an infusion port 3 is sealed inside the protector 4.
In both cases, the base 5 of the infusion port 3 is fixed to the upper part of the bag-shaped main body 2 by welding.
Medical bag 1, characterized in that the. 2. The method for manufacturing a medical bag 1 according to claim 1, comprising the following steps. (1) a step of placing the infusion port 3 between two synthetic resin sheets 6 and pressing and welding the base 5 of the infusion port 3 and the sheet 6 in contact with the base with upper and lower mouth dies 8; 2) a step of pressing the sheet 6 of the above (1) with upper and lower molds to integrally form the bag-shaped main body 2 and the protector 4 covered with the infusion port 3 above the main body;