Apparatus for the induced infusion of a liquid from a flexible liquid bag
First Claim
1. Apparatus for the induced infusion of a liquid from a flexible liquid bag, comprising:
- a hand-operable pumping bulb;
elastic inflatable means coupled to said bulb for inflation by a fluid pumped therein by operating said bulb;
and a sleeve for retaining the bag firmly pressed against a first portion of said elastic inflatable means for applying the pressure thereof to said bag in order to induce infusion of the liquid therefrom;
characterized in that a second portion of said inflatable means serves as an accumulator for accumulating pressurized fluid pumped by said bulb, and comprises an outer non-elastic sheath enclosing said latter portion of the elastic inflatable means for limiting the accumulation of the pressurized fluid therein.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus for the induced infusion of a liquid from a flexible liquid bag comprises a pumping bulb, elastic inflatable means coupled to the bulb for inflation thereby, and a flexible sleeve for retaining the liquid bag firmly against a first portion of the inflatable means for applying the pressure thereof to the bag to induce infusion of the liquid therefrom. The elastic inflatable means includes a second portion which serves as an accumulator for accumulating pressurized fluid pumped by the bulb and comprises an outer non-elastic sheath for limiting the accumulation of the pressurized fluid therein. In one described embodiment, the two mentioned portions of the elastic inflatable means are constituted of separate units, one being a bag-presser including an inflatable bladder against which the liquid bag is pressed by the flexible sleeve, and the other being a separate accumulator including an inflatable tube enclosed by the non-elastic sheath. In a second described embodiment, both of the mentioned portions of the elastic inflatable means are constituted of a single elastic bladder enclosed only at its mid-portion by the flexible sleeve, the end portions of the bladder projecting outwardly of the flexible sleeve and being enclosed by the non-elastic sheath so as to serve as the accumulators for accumulating the pressurized fluid.
-
Citations
16 Claims
-
1. Apparatus for the induced infusion of a liquid from a flexible liquid bag, comprising:
-
a hand-operable pumping bulb; elastic inflatable means coupled to said bulb for inflation by a fluid pumped therein by operating said bulb; and a sleeve for retaining the bag firmly pressed against a first portion of said elastic inflatable means for applying the pressure thereof to said bag in order to induce infusion of the liquid therefrom; characterized in that a second portion of said inflatable means serves as an accumulator for accumulating pressurized fluid pumped by said bulb, and comprises an outer non-elastic sheath enclosing said latter portion of the elastic inflatable means for limiting the accumulation of the pressurized fluid therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An inflatable bag-presser unit for use with with an infusion bag, comprising:
- an inflatable bladder, a rigid backing plate on one side of said bladder, and a flexible sleeve adapted to receive said infusion bag and to retain same pressed against the opposite side of said inflatable bladder, said rigid backing plate being bent so as to form a generally concave face for receiving the inflatable bladder and the infusion bag, said sleeve being in the form of a flexible strip wrappable about said rigid backing plate to enclose the inflatable bladder and infusion bag within said generally concave face of the rigid backing plate, said rigid backing plate being enclosed within a backing plate sleeve, said flexible strip being secured at one end to said backing plate sleeve, and at the opposite end being releasably attached to the backing plate sleeve by releasable fastening means.
- View Dependent Claims (12, 13, 14, 15, 16)
Specification