Patent ID: 7639151

Claim:
A liquid blocking apparatus connected to a liquid tank or an IV bag for injecting liquid comprising, an elastic support strip having a concave portion in a center thereof; an elastic operation strip having a convex portion in contact with said concave portion of said elastic support strip; and a housing including an inlet through which liquid is introduced, and an outlet from which liquid flows out and arranged at an upper and lower end thereof, wherein a pair of said elastic support strip and said elastic operation strip are mounted on one side thereof, wherein said convex portion of said elastic operation ship attached to said concave portion of said elastic support strip is protruded toward the opposing direction of said concave portion due to liquid pressure when liquid is introduced, and then liquid starts to flow, and said convex portion of said elastic operation strip becomes in close touch with said elastic support strip by convex portion closing force for restoring to an original form when liquid is not introduced, thereby the outlet of said housing is covered and blocked, and then liquid of an IV tube does not flow out; a screw thread connection unit which is formed on the other side of said housing for attaching and detaching an alarm or a wireless calling device, and includes an alarm button opening formed in a center thereof through which an alarm button can be inserted, said alarm button is pressed when the convex portion of said elastic operation strip is projected toward an opposing direction when liquid is introduced, so that an alarm lamp is not turned on and an alarm sound is not generated, and said alarm button is projected to an original position when the convex portion of said elastic operation strip is restored to the original position when liquid is not introduced, so that the alarm lamp is turn on and the alarm sound is generated.