Otsuka Pharmaceutical Factory, Inc.

Tatsuro Tsuruoka

Fujio Inoue

Isamu Tateishi

Akihito Togawa

Yasuhiro Ishikawa

Yasushi Nagata

Yasushi Morimoto

A method for reinforcing a weak sealed portion of a multi-chamber medical container by simple processing. The method for reinforcing a weak sealed portion of a multi-chamber medical container includes a multi-chamber container forming step for forming a multi-chamber medical containerincluding a first container portionfor containing a medicine, a second container portionfor containing a medical solution, an empty container portion, a pair of lateral side strong sealed portionsfor forming both side ends of the container portions, a medical solution side weak sealed portionfor forming a partition between the first container portionand the second container portion, and a discharge side weak sealed portionfor forming a partition between the first container portionand the empty container portion; and a weak sealed portion reinforcing step for bonding a reinforcement filmfor reinforcing the discharge side weak sealed portionso as to cover the surface of the first container portionand so as to be spaced in the discharge directionfrom a first borderwith the first container portionon the discharge side weak sealed portion

Method for reinforcing weak sealed portion of multi-chamber medical container

There is provided a multi-chamber bag that is capable of securely checking a medicinal substance accommodated therein without the necessity to perform a troublesome work, while preventing a matter deteriorating the medicinal substance from reaching the inside of a medicinal-substance accommodation chamber and hence securely preventing the deterioration of the medicinal substance. In a multi-chamber bag having a bag body that has a strong seal part that joins two sheet members together to define an interior space of the bag body, and a weak seal part that joints the two sheet members together so as to be able to rupture them apart, thereby partitioning the interior space of the bag body into a medicinal-substance accommodation chamber and a diluting-solution accommodation chamber, a pair of cover sheets are provided to respectively cover the medicinal-substance accommodation chamber. Each of the cover sheets is jointed to the facing sheet member so as to form an outside seal part surrounding the medicinal-substance accommodation chamber. One of the cover sheets has a structure capable of absorbing adverse influence causing matters, and a communication part for communication between spaces formed between both the sheet members and the both the cover sheets on both the sides is formed between an inside edge of the outside seal part and an inside edge of the strong seal part.

Multi-chamber bag

It is an object of the resent invention to provide a multi-chamber container that has a weak seal portion having an increased joining strength and being easy to be opened when in administration of medicine, and that is provided at low cost. The multi-chamber container includes a medicine accommodation chamber, a diluting solution chamberjointed to one side of the medicine accommodation chambervia a partitioning weak seal portion, an unoccupied chamberhaving a portand joined to an opposite side of the medicine accommodation chambervia a discharging weak seal portion, a film memberattached to the medicine accommodation chamberfor increasing a joining strength of each of the discharging weak seal portionand the discharging weak seal portion, the discharging weak seal portionhaving an easy-to-open portionthat enables the discharging weak seal portionto easily opened therethrough.

Multi-chamber container

A drug container of a multilayer film including a first layer () composed of a linear ethylene/&#x3b1;-olefin copolymer having a density of 0.930 to 0.950 g/cm, a second layer () and a fourth layer () each composed of a mixture containing a linear ethylene/&#x3b1;-olefin copolymer having a density of 0.860 to 0.920 g/cmin a weight ratio of 95:5 to 40:60, a third layer () composed of a polycycloolefin, and a fifth layer () composed of a mixture containing a polyethylene and a polypropylene, the fifth layerserving as an innermost layer.

Drug container and multilayer film

Provided a port member for an infusion solution bag that is capable of suppressing occurrence of gaps or wrinkles in a sealed portion in a manufacturing process, and preventing damages to resin sheets of a bag body during storage or transportation. A port member for an infusion solution bag includes a tubular body portion having one end sealed by a plug member structured to enable a hollow needle to be pierced into the plug member, and a tubular to-be-sealed portion continuously formed with an other end of the body portion and having an inner space communicated with the inside of the body portion, the to-be-sealed portion being held between and sealed to end portions of resin sheets overlapped together to form a bag body having an inner space for accommodation of at least a medicine, in which the to-be-sealed portion thus sealed has a radially flattened shape.

Growing community of inventors

Naruto, Japan

Tatsuro Tsuruoka