Pack for administration of sterile liquids including pharmaceutical, nutrient and energy-source liquids
First Claim
1. A container for administering a flowable substance to a patient comprising wall means defining a first chamber adapted to be at least partially filled with the flowable substance, said first chamber having means defining an opening for supplying the flowable substance to the patient, and means for detecting a leak in said wall means comprising means defining a space contiguous with said wall means for receiving the flowable substance accidentally leaked through said wall means, and a leak indicator medium accommodated in the space responsive to the presence of the leaked-in substance to provide a visible indication that a leak has occurred.
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Accused Products
Abstract
A pack for slow administration to a patient of extremely accurate volumes of sterile, for example pharmaceutical, nutrient or energy-source liquid, comprises in combination at least three systems adapted to be interconnected. The first system is a flowrate regulator. The second system is, for each sterile liquid administered, a sterile bag with a mobile, flexible and continuous wall which delimits an internal cavity in which is at least one opening enabling it to communicate selectively with the exterior. The third system is a solid or fluid piston operating on the interior or exterior side of the wall of said bag to vary its volume, and, in the case of a fluid piston, at least one alarm means indicating any leak in the wall or one of the walls of the bag, adapted by its existence or its properties to convert non-perceptible leakage into a perceptible phenomenon.
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Citations
37 Claims
- 1. A container for administering a flowable substance to a patient comprising wall means defining a first chamber adapted to be at least partially filled with the flowable substance, said first chamber having means defining an opening for supplying the flowable substance to the patient, and means for detecting a leak in said wall means comprising means defining a space contiguous with said wall means for receiving the flowable substance accidentally leaked through said wall means, and a leak indicator medium accommodated in the space responsive to the presence of the leaked-in substance to provide a visible indication that a leak has occurred.
- 9. A safety container for administering a flowable substance to a patient comprising a first chamber for containing a first flowable substance, first communication means for communication with sad first chamber, a second chamber normally isolated from said first chamber for container a second flowable substance, second communication means for communication means being adapted to supply the corresponding contained flowable substance to the patient, and a third chamber between first and second chambers and normally out of communication with the first and second chambers and defining a reservoir for the second flowable substance accidentally leaked from the second chamber and thereby avoiding contamination of the first flowable substance in the first chamber by the leaked-in second flowable substance from the second chamber, said third chamber containing a leak detector medium for providing a visual indication that the leak has occurred.
- 16. A container for a flowable substance comprising a first chamber having inlet means for supplying a control flowable substance to said first chamber, a second chamber separate from said first chamber for containing a flowable substance to be supplied, and outlet means for connecting said second chamber to a user, said first and second chambers being defined by flexible wall means, a third chamber disposed between wall means separating said first and second chambers, said third chamber defining a reservoir for the flowable substance from either of the first and second chambers in case of a leak in said wall portion, and said third chamber containing means giving a visible indication of said leak to the exterior.
- 24. A pack for administering a flowable substance to a patient comprising a first, inner chamber for containing a first flowable substance, means for communication between said inner chamber and the surroundings, a second, outer chamber substantially entirely surrounding the first chamber for containing a second flowable substance and means for communication between said second chamber and the surroundings, one of said means for communication being adapted to supply the corresponding contained flowable substance tot he patient, said first and second chambers and their respectively flowable substances being normally entirely out of contact and communication with one another, and a third, sealed intermediate chamber disposed between the inner and outer chambers defining a reservoir for accidentally leaked flowable substance from either one of the first and second chambers, said sealed intermediate chamber containing a leak detector medium.
Specification