Infuser with balloon for continuously infusing solution of...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/152 (2006.01) A61M 3/00 (2006.01) A61M 5/14 (2006.01)

Patent

CA 2053854

An infuser with a balloon for continuously infusing a solution of medicine comprises a tubular main body (1) having a flow path (11) for the solution of medicine which is formed along the longitudinal axis of the body (1). An inlet portion (5) for the solution of medicine having a check valve, an injection port, or a one-way cock (51) is connected to one end of the body (1). A cylinder (3) with a bottom is slidably connected to the other end of the body (1). The bottom of the cylinder is directed outwardly. The cylinder or the other end of said body is provided with a plurality of holes (31 or 12). A change-over valve (4) is provided in the flow path (11) at an intermediate portion of the body. An outlet portion (6) for the solution of medicine is connected to the change-over valve (4). A control portion (7) for controlling outflow of the solution of medicine is provided in the outlet portion (6). A balloon (2) made from an elastic material surrounds the holes. One perimeter (21) of the balloon is air-tightly secured to the outer periphery of the body at a given position and the other perimeter (22) of the balloon is air-tightly secured to the outer periphery of the cylinder at a given position. In use, a given amount of the solution of medicine is infused into the balloon through the inlet portion. The solution of medicine in the balloon flows out continuously for a long time through the outlet control portions and a retainer adapted to indwell the human body and attached to the outlet portion.

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