JPS6335257A - Medical bag and its production - Google Patents

Abstract

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

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to infusion bags used for infusing glucose, amino acid infusions, physiological saline, etc., blood bags for collecting and storing blood from blood donors, etc. related to medical bags.

(Prior Art and Problems) Currently, a medical bag 51 shown in FIG. 1O is used for mixing medicines, infusions, etc.

The medical bag 51 is made of 2 sheets sent out from a sheet forming machine.
After overlapping two synthetic resin sheets, a mold is used to seal-cut them into a bag shape.
It is formed by inserting a protector 53 and a connecting tube 54 which have a protector 2 inside.

55 is an infusion tube.

However, such medical bags often come into contact with the atmosphere during or before the process of overlapping two sheets, and there is a possibility that foreign matter such as small dust and dirt may adhere to the sheet surface due to static electricity. In particular, if these foreign substances adhere to the inner surface of the sheet, careful cleaning is required to remove them after production, making the manufacturing process extremely complicated.
Moreover, it is unhygienic.

Furthermore, since the bag obtained by stacking two sheets by the conventional method is sealed around the entire periphery, a narrow portion 56 is formed near the sealed portion, as shown in the cross-sectional view of FIG.
If the liquid inside is blood, residual blood and coagulation will occur in the narrowed portion 56, resulting in waste of valuable blood.

(Means for Solving the Problems) Therefore, the present invention has a main body formed in a bag shape and a bulge formed at an end of the main body, and the bulge is folded back toward the inside of the main body. Insert the seal 11 material into the folded part and seal the seal II.
In addition to providing a medical bag in which an infusion port is formed by capping a bulge into which a part is inserted and a stopper is inserted, the present invention also aims to provide a medical bag in which an infusion port is formed by covering a bulge in which a member is inserted. Extrude the synthetic resin into a bag shape while blowing air,
It is molded by being sandwiched between a conveyor with multiple medical bag-shaped molds formed on the surface, and after filling the inside with a medical solution, a sealing member and a stopper are attached to the formed bulge. The present invention provides a method for manufacturing a medical bag in which an infusion port is formed using the following methods.

(Function) In the present invention having the following configuration, by removing the stopper and piercing the infusion needle through the folded part of the bulge through the sealing member, the drug solution inside can be led out to the outside. .

Furthermore, when the bag is held between an elastic conveyor and formed into the shape of a medical bag, it can be formed aseptically without coming into contact with the outside air, and the force is evenly distributed over the entire bag, so it can be formed uniformly. Can be formed.

Also, when installing the infusion port, the inside of the main body is sealed, so the installation work can be carried out hygienically.

(Example) FIG. 1 is a schematic diagram showing the structure of an example of a medical bag 1 of the present invention.

2 is a main body formed by an inflation molding method, and an infusion port 3 is formed at the -L end of the main body.

As shown in FIG. 2(a), the infusion solution 113 is made of a bulge 4 formed during molding of the medical bag 1 of the present invention, a member 5 made of a hard plastic tube, and a polypropylene film collar. It is composed of a plug body 6 and a contraction tube 7. The method of assembling the infusion port 3 is shown in Figure 2 (b).
).

The bulging part 4 is folded back toward the inside of the main body, and then the seal 11 member 5 is inserted into the folded part 40.

The shape of the tip of the bulging portion 4 is arranged in a straight line along the cross-sectional shape of the sealing member 5.

Next, the plug 6 is placed over the bulge 4 into which the sealing member 5 has been inserted, and finally, the shrink tube 7 is attached to the outer circumference of the plug 6 to complete the assembly.

A sewing machine 8 and a handle 9 are formed on the outer circumferential surface of the stopper 6 so that it can be opened easily.

In addition, the shape of the infusion port is as shown in FIG.
The sealing member 12, which may be composed of a sealing member 12 having a flange 13 and a contractible stopper 15 having a handle 14, is inserted into the folded part 41 of the bulging part 4, and the sealing member 12 is inserted into the folded part 41 of the bulging part 4. After adjusting the shape, the bulge 4 into which the sealing member 12 is fitted is covered with the plug 15 and assembled.

Next, a method for manufacturing a medical bag according to the present invention will be explained.

As shown in FIG. 4, the vinyl chloride resin is extruded into a bag shape by an inflation molding machine 16, air is blown into the inside while it is hot, the bag 17 is inflated, and the molding machine 18 installed in the extrusion path of the bag 17 extrudes the vinyl chloride resin into a bag shape. Shape into a bag.

The molding machine 18 has a medical bag mold 30 and claws 19 on the surface.
Conveyor 20.21 and drive shaft 22.23 formed with multiple
．． 24.25, fixed shaft 27.2 via spring 26
It consists of a pressing member 29 attached to 8.

As shown in FIG. 5, the molds 30 of the conveyors 20 and 21 have grooves 31 for the main body 2 corresponding to the shape of the medical bag 1 of the present invention. A groove 32 for the bulge 4, a groove 33, 34 for the liquid passage 10, and 11 are formed.

The conveyor 20 further includes the mold 3 as shown in FIG.
A plurality of claws 19 are provided along the lines of each groove.

As shown in the enlarged view of FIG. 7, the claw 19 has a two-stage structure including a bag holding part 35 and a cut forming part 36.

The suppressing member 29 is also provided corresponding to the shape of the medical bag 1, and is formed so as to press the conveyor 20 and the conveyor 21 having the molds 19.

The con hair 20.21 is made of an elastic material such as thermosetting polyurethane.

The bag 17 extruded from the inflation molding machine 16 is held between conveyors 20 and 21. Conveyor 20.
21 is pushed from both sides by a suppressing member 29 that utilizes the elastic repulsion force of the spring 26, so the bag 17 is pushed against the conveyor 2.
As shown in FIG. 8, it is formed into the shape of a medical bag 1 by the mold 30 and claws 19 formed on each surface of 0.2 mm.

37 indicates a welded portion of the bag 17, and 38 indicates a cut portion. Type 3
0 is formed on a conveyor 20.21 made of an elastic material, and the conveyor 20.21 is pressed by the elastic repulsion force of the spring 26, so that the stress is not concentrated in one part of the bag and is uniformly distributed throughout the bag. distributed.

Even if stress is concentrated in one place, the conveyor 20
．． 21, it is absorbed and relaxed by the spring 26.

Therefore, there is no risk of bag breakage or molding defects due to stress concentration.

At this time, the formed medical bag l has a liquid passage to, 1
They are integrally connected via 1.

Next, as shown in FIG. 9, the liquid passage 10.11 is cut at a predetermined position, and the liquid is poured into the medical bar and the glue 1 which are integrally connected via the liquid passage 1O111 as follows. Fill.

The medical bag l is placed on the horizontal table 39, and saline water, ACD-A, and C are supplied from the liquid passage 10 of the first medical bag l.
Fill with blood preservation solution such as PD solution while expelling internal air.

Since the medical bags 1 are placed horizontally, the medical solution can be uniformly filled from the first medical bag to the last medical bag 1'.

After filling is completed, each medical bag is separated by welding the liquid passages 10.11 with a welder.

Finally, as mentioned above, the manufacturing is completed by attaching a sealing member and a plug to the bulging part 4 to form an infusion port6. The attached shrink tube and shrinkable plug shrink, and the film-like plug and sealing member to the bulge become more firmly and airtightly attached to the main body.

Next, an example of use of the medical bag 1 of the present invention will be explained.

When the handle 9 of the stopper 6 is grasped with fingers and force is applied in the circumferential direction along the perforation 8, the sewing machine 8 breaks and the folded portion 40 of the bulge is opened.

An infusion needle (not shown) is pierced through the folded part 40, and the medical solution inside is provided for infusion via the infusion side.

(Effects of the Invention) As described above, according to the present invention, (1) The number of parts can be simplified and costs can be significantly reduced.

(2) It is hygienic because there is no fear that the inner surface will come into contact with the atmosphere or that foreign matter such as dust or dirt will adhere to the inner surface during the manufacturing process.

(3) Since the elastic conveyor allows uniform force to be applied to the entire bag during bag forming, it is possible to manufacture uniform products.

This invention has excellent effects such as:

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the medical bag of the present invention, FIG. 2 is an enlarged sectional view and an exploded perspective view of the infusion port of the medical bag, and FIG. FIG. 4 is a schematic diagram showing a method of manufacturing a medical bag, FIGS. 5 and 6 are schematic diagrams of a mold formed on the surface of a conveyor, and FIG. An enlarged view of the tips of the claws formed on the surface of the conveyor, Figure 8 is a cross-sectional view of a bag formed by an inflation molding machine, Figure 9 is a schematic diagram of the filling process for medical liquid, and Figure 1O is a conventional medical bag. A schematic diagram of the bag, FIG. 11 shows a sectional view taken along line AA in FIG. 10. In the figure, l is a medical bag, 2 is a main body, 3 is an infusion port, 4 is a swelling part, 5.12 is a soil member, 6.15 is a stopper, 7 is a contraction tube, 16 is an inflation molding machine, 17 is a bag, 18 is a molding machine, 19 is a claw, 20.21 is a conveyor, 2
2 to 25 are drive shafts, 26 are springs, 27.28 are fixed shafts, 29 are suppression members, 30 are molds, 39 are horizontal stands, 40
．． 41 indicates a folded portion.

Claims (2)

[Claims] (1) It has a bag-shaped main body and a bulging part formed at the end of the main body, and the sealing member is inserted into the folded part where the bulging part is folded back toward the inside of the main body to seal it. A medical bag characterized in that a bulge into which a member is inserted is covered with a plug to form an infusion port. (2) Molten synthetic resin is extruded into a bag shape while blowing air, and the bag is held and molded between an elastic conveyor with multiple medical bag-shaped molds formed on the surface, and a medical solution is placed inside. 1. A method for manufacturing a medical bag, which comprises: filling the bulge with liquid, and then attaching a sealing member and a stopper to the formed bulge to form an infusion port.