IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0023890
(1987-03-09)
|
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발명자
/ 주소 |
- Carveth Peter (Glen Ellyn IL) Pyde Edwin (Des Plaines IL)
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| 출원인 / 주소 |
- Baxter Travenol Laboratories, Inc. (Deerfield IL 02)
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| 인용정보 |
피인용 횟수 :
70 인용 특허 :
0 |
초록
▼
A unique selectively openable seal line made between two sheets of flexible thermoplastic material is disclosed, the seal line being exceptionally resistant to unintentional opening forces but being easy to open upon the application of a specific force. The seal line may be employed in various conta
A unique selectively openable seal line made between two sheets of flexible thermoplastic material is disclosed, the seal line being exceptionally resistant to unintentional opening forces but being easy to open upon the application of a specific force. The seal line may be employed in various containers, including a two chamber container for the separate storage and selective mixing of two medical substances. The container includes two sheets forming the exterior of the container and an inner, diaphgram sheet between the outer sheets. The selectively openable seal line is disposed between one of the outer sheets and the diaphragm sheet. Preferably a permanent line of securement is also included, between the other exterior sheet and the inner diaphragm sheet, extending substantially parallel to and coextensive with the openable seal line. Such a container provides a relatively inexpensive and reliable means for separately storing two medical substances in a closed system under sterile conditions, while still providing for quick and easy selective mixing of the substances when desired. Finally, the present invention is also directed to a sealing die for making the unique seal line and to a method for manufacturing the container.
대표청구항
▼
A selectively openable seal line for sealing a first and second sheet of material together and defining a predetermined break point, the seal being so constructed and arranged that upon an application of a specific force to the sheets, the sheets break only at the break point, the seal line comprisi
A selectively openable seal line for sealing a first and second sheet of material together and defining a predetermined break point, the seal being so constructed and arranged that upon an application of a specific force to the sheets, the sheets break only at the break point, the seal line comprising in cross section: a bead area of increased thickness, the first and second sheets being sealed at the bead area; a beveled surface defined by the second sheet, the first and second sheets being sealed at the beveled surface; a concave depression located between the bead area and the beveled surface, the concave depression defining a point of minimum seal thickness; and the concave depression, bead area, and beveled surface cooperating to cause the break point at which the second sheet separates from the first sheet, to be located at a vertical position between a first horizontal plane tangent to the point of minimum seal thickness defined by the concave depression and a second horizontal plane tangent to a top of the bead and parallel to the first horizontal plane. A selectively openable seal line for sealing a first and second sheet of material together and defining a predetermined break point, the seal being so constructed and arranged that upon an application of a specific force to the sheets, the sheets break only at the break point, the seal line comprising in cross section: a bead area of increased thickness, the first and second sheets being sealed at the bead area; a beveled surface defined by the second sheet, the first and second sheets being sealed at the beveled surface; a concave depression located between the bead area and the beveled surface, the concave depression defining a point of minimum seal thickness; the concave depression, bead area, and beveled surface cooperating to cause the break point at which the second sheet separates from the first sheet, to be located at a vertical position between a first horizontal plane tangent to the point of minimum seal thickness defined by the concave depression and a second horizontal plane tangent to a top of the bead and parallel to the first horizontal plane; and a second bead area between the first and second sheets extending beyond the bevel surface. In a container which comprises a pair of flexible, collapsible, facing walls, said container carrying a selectively openable seal line between a pair of adjoining flexible thermoplastic sheets, said seal line defining a bead area of increased thickness sealing said pair of sheets together in an angular relation, at least one of said thermoplastic sheets joining said bead at a position substantially to one side thereof and spaced from the area of said bead which is most distant from the other of said thermoplastic sheets, and an arcuate depression defining a concave downward surface extending from substantially the junction of said one sheet and said bead to a minimum seal thickness point of the two sealed sheets, whereby manipulation of said one thermoplastic sheet can cause the formation of a break line through said one thermoplastic sheet beginning substantially at its junction at the side of the bead area, to sever said one sheet from the bead area for forming an aperature in said container, said arcuate depression having a concave upward surface extending upwardly from said minimum seal thickness point away from said concave downward surface and said bead area, said seal line defining a bevelled surface defined by said one thermoplastic sheet in which the thickness of said seal along said bevelled surface increases, moving away from said arcuate depression to an end of the seal and the other thermoplastic sheets.
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