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Medical bag
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A medical bag and liquid technology, applied in the field of medical bags, can solve the problems of peeling and difficult separation, and achieve the effect of easy and reliable peeling
Active Publication Date: 2017-12-01
TERUMO KK
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[0004] However, in the conventional medical bag, when the medical bag is produced, if it is sterilized at a higher temperature in order to improve safety, there may be cases where separation occurs due to the heat during the sterilization. The part is firmly welded, and it is difficult to peel off the partition part during use
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Embodiment 1
[0155] The medical bag is manufactured by performing the following operations.
[0156] The cylindrical sheet obtained by molding polypropylene is welded using a mold to form a partition. The surface temperature of the upper mold was set to 130°C, and the surface temperature of the lower mold was set to 105°C.
[0157] Next, the first space of the bag body is filled with the first liquid, the second space is filled with the second liquid, and necessary parts are sealed. The ratio L1 / L2 of the volume L1 of the first liquid to the volume L2 of the second liquid was set to 4.0.
[0158] Next, the medical bag is stored in the packaging material and sterilized at 118°C for 30 minutes.
Embodiment 2
[0162] In Example 1, the surface temperature of the upper mold was changed to 140°C, the surface temperature of the lower mold was changed to 115°C, L1 / L2 was changed to 5.0, and the sterilization conditions were changed to 121°C for 35 minutes. Otherwise, press and In the same manner as in Example 1, a medical bag was manufactured.
[0163] Regarding the results of the test, in Example 2, everyone was able to peel off the partition, and good results were obtained. In addition, the average value of the internal pressure when the partition was peeled off was 15.0 kPa.
Embodiment 3
[0165] In Example 1, the surface temperature of the upper mold was changed to 145°C, the surface temperature of the lower mold was changed to 125°C, L1 / L2 was changed to 6.0, and the sterilization conditions were changed to 121°C for 30 minutes. Otherwise, press and In the same manner as in Example 1, a medical bag was manufactured.
[0166] Regarding the result of the test, in Example 3, all persons were able to peel off the partition, and good results were obtained. In addition, the average value of the internal pressure when the partition was peeled off was 22.0 kPa.
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Abstract
A medical bag 1 includes: a bag body 2 that is constituted by a flexible sheet material 21 and that has an interior partitioned into a first space 3 and a second space 4 with a partition part 5 therebetween; a first liquid 30 that is received in the first space 3; and a second liquid 40 that is received in the second space 4. The partition part 5 is formed by sandwiching and melting the sheet material 21 from both sides by an upper die 81, which is located further up in the vertical direction than the sheet material 21 and has a surface temperature of 130-145 DEG C, and a lower die 82, which is located further down in the vertical direction than the sheet material 21 and has a surface temperature 20-30 DEG C lower than the surface temperature of the upper die 81, and the sandwiched and melted sheet material is subjected to sterilization at 118-125 DEG C for 20-45 minutes to obtain the partition section 5. A ratio L1 / L2 between the volume L1 of the first liquid 30 and the volume L2 of the second liquid 40 is 2.0-6.0, and the breaking strength of the partition section 5 is 5-25 kPa.
Description
Technical field [0001] The present invention relates to medical bags. Background technique [0002] In medical bags with a bag body sealed with liquids such as infusion, peritoneal dialysate, and liquid nutrients, for example, when transfusion, peritoneal dialysis, and nutrient administration are performed to patients, a mixture of two or more types is used In the case of ingredients, if these ingredients are mixed and stored in the bag body at the beginning, the quality may change and deteriorate over time. [0003] For this reason, the following medical bag (multi-chamber container) was developed in which the middle of the bag body made of a resin sheet is welded into a strip to form a partition, and the inside of the bag body is divided into two by the partition In the space, two liquids are separately contained in each space, and when used, the partition is peeled off to mix the liquids in the two spaces for use (for example, see Patent Document 1). As a result, it is possibl...
Claims
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