JPH0647466Y2 - Infusion container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infusion container filled with an infusion liquid such as blood for infusion, Ringer's solution and glucose solution, and more particularly to a structure of a joint portion between a container body and a cap.

[0002]

2. Description of the Related Art An infusion container comprises a container body filled with an infusion solution and a cap for the infusion container joined to an opening of the container body. A rubber piercing body into which an infusion needle is pierced is enclosed in this cap. Such an infusion container is of a type in which the tip of the container body serves as a joint, and a type in which the container body is located at the tip of the joint. By the way, when joining the cap to the container body, conventionally, a heating method using a heating plate, an ultrasonic welding method using an ultrasonic welder, and an adhesive method using an adhesive have been used. However, in the case of the type in which the container main body is located at the tip of the joining portion, there is a problem that the tip of the container body is melted before the adhesive portion is melted when the heating method using the heating plate is used. Further, when the ultrasonic welding method is used, there is a problem that fine particles are generated due to vibration due to ultrasonic waves. In addition, if the adhesive method using an adhesive is used,
There is a problem that the adhesive may elute. An object of the present invention is to provide an infusion container that solves all the above problems.

[0003]

To achieve the above object, the present invention is characterized in that a container body filled with an infusion solution and a rubber piercing body into which a needle for infusion solution is pierced are provided. And a cap of the infusion container that is enclosed,
The container body and the cap are made of plastic, and the container body and the cap are joined at a portion other than the tip of the opening of the container body, and a metal body is formed between the joining surfaces of the container body and the cap. It is sandwiched, and the joining surface of the container body and the joining surface of the cap are welded by an electromagnetic induction heating method. The metal body may be a wire mesh. Further, the metal body may be a metal foil whose both surfaces are coated with an adhesive. Further, the metal body may be a metal foil having synthetic resins laminated on both sides.

[0004]

According to the present invention, when the cap is joined to the container body, a portion of the opening of the container body other than the tip portion is used as the joint portion. Then, a metal body is sandwiched between the joint surfaces of the container body and the cap and heated by an electromagnetic induction heating method. As a result, the metal body is heated, and the joint surface of the container body and the joint surface of the cap are welded.

[0005]

1 is a partial cross-sectional view of an infusion container according to the first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the essential parts of the first embodiment of the present invention. The infusion container 1 according to the present invention is composed of a container body 2 filled with an infusion solution and sealed, and a cap 4 welded to an opening 3 of the container body 2.
The container body 2 is made of plastic, and the opening 3 is integrally formed with a flange portion 5 protruding outward in the radial direction.

The cap 4 is made of plastic.
The cap 4 includes a main body 6, a piercing body 7 into which an infusion needle is pierced, and a sealing body 8 which is provided on the top wall of the main body 6 so as to be openable and closable. 7 is
It is enclosed in the main body 6. The main body 6 includes a cylindrical portion 6A having a bottomed cylindrical shape that opens downward, and a partition portion 6B that partitions the inside of the cylindrical portion 6A into upper and lower portions, and these cylindrical portion 6A and the partition portion 6B are integrally formed. . The piercing body 7 is made of a rubber disc and has a partition portion 6 in the cylindrical portion 6A.
It is enclosed above B. Although the partition portion 6B is provided in this embodiment, the partition portion 6B may be omitted. Tube part 6A
A flange portion 6C protruding outward in the radial direction is integrally formed at the lower end of the flange portion 6C, and the flange portion 6C is joined to the flange portion 5 of the container body 1. The flange 6
A flange portion 6D protruding downward is integrally formed at the lower end portion of the outer peripheral edge portion of C, and the inner peripheral surface of the flange portion 6D is in contact with the outer peripheral edge surface of the flange portion 5.

Details of the joint between the flange portion 6C and the flange portion 5 are shown in FIG. That is, the flange portion 6C
The lower surface of the and the upper surface of the flange portion 5 are joined surfaces 11 and 12 respectively.
The metal mesh 13 as a metal body is sandwiched between the joint surfaces 11 and 12, and the flange portion 6C and the flange portion 5 are welded together by the electromagnetic induction heating method. As the material of the wire net 13, iron, copper, aluminum or the like is used. In particular, a material having a large electric resistance and a large skin resistance, such as iron, is preferable among the conductors from the viewpoint of heat generation. In the case of the infusion solution container 1 having the above-mentioned configuration, at the time of infusion, the sealing plate 8 is opened to form an opening, and a needle for infusion solution is inserted into the insertion body 7 and the partition portion 6B from this opening to form a container. It is designed to be inserted into the main body 2.

Next, a manufacturing process of the infusion container 1 having the above structure, particularly a process of joining the cap 4 to the container body 2 will be described. First, the joint surface 11 of the flange portion 6C
The cap 4 is attached to the container body 2 so that the metal net 13 is sandwiched between the joint surfaces 12 of the and the flange portion 5 over the entire surface. Then, in such a state, the induction coil of the known electromagnetic induction heating device is brought close to the joint portion to drive the electromagnetic induction heating device. As a result, an induced electromotive force is generated in the wire net 13 and Joule heat is generated. Such a wire net 13
The joining surface 11 and the joining surface 12 are heat-welded by the heat generation of, and the cap 4 is joined to the container body 2.

FIG. 3 is an enlarged sectional view of the essential parts of the second embodiment of the present invention. In the second embodiment, instead of the metal net 13 used in the first embodiment, a metal foil 15 having adhesive layers 14 formed on both sides by applying an adhesive is used. With such a configuration, compared to the first embodiment, the bonding surfaces 11 and 12 can be firmly fixed by the amount of the adhesive. In addition, you may make it use the metal foil which laminated | stacked the synthetic resin on both surfaces. In the above-described first and second embodiments, the wire mesh 1
Although the metal foil 15 and the metal foil 15 are entirely interposed between the bonding surfaces 11 and 12, the present invention is not limited to this and may be partially interposed.

[0010]

As described above, according to the present invention, since the joint between the cap and the container body is welded by using the electromagnetic induction heating method, the following effects can be obtained. Since only the metal body that is a conductor generates heat, the tip of the container body does not melt before the bonding part melts as in the case of a heating method using a heating plate, and only the necessary parts other than the tip of the container body are Can be welded. Since the induction heating method does not generate vibration, fine particles are not generated due to the vibration unlike the ultrasonic welding method. There is no risk of elution of the adhesive as in the case of the bonding method using an adhesive.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an infusion container according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part of the first embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part of a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Infusion container, 2 ... Container body, 3 ... Opening part, 4 ... Infusion container cap, 5, 6C ... Flange part, 7 ... Stab, 11, 12 ... Joining surface, 13 ... Wire mesh, 14 ... Adhesive layer, 15 ... Metal foil.

Claims (4)

[Scope of utility model registration request] 1. A container body filled with an infusion solution, and a cap for an infusion container in which a rubber piercing body into which a needle for the infusion solution is inserted is enclosed. The container body and the cap are made of plastic. The container body and the cap are joined together at a portion other than the tip of the opening of the container body, and the metal body is sandwiched between the joining surfaces of the container body and the cap, and electromagnetic induction heating is performed. An infusion container characterized in that the joint surface of the container body and the joint surface of the cap are welded by a method. 2. The infusion container according to claim 1, wherein the metal body is a wire mesh. 3. The infusion container according to claim 1, wherein the metal body is a metal foil whose both surfaces are coated with an adhesive. 4. The infusion container according to claim 1, wherein the metal body is a metal foil having synthetic resins laminated on both sides.