REGULATOR FOR DRUG INFUSION AND DRUG INFUSION DEVICE INCLUDING SAME
First Claim
1. A regulator for medicine infusion comprising:
- a housing having an inlet communicating with an inflow conduit which extends to communicate with a liquid medicine storage space, an outlet communicating with an outflow conduit, and an internal space communicating with the inlet and the outlet;
a membrane member being located in the internal space of the housing and forming a medicine flow passage between the inlet and the outlet, the membrane member receiving a pressure of a liquid medicine discharged via the medicine flow passage from the inlet to the outlet and the shape of the membrane member being changed depending on a flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet;
a lever being located below the membrane member and having an inlet side extension portion and an outlet side extension portion opposed to each other with respect to a rotary axis, the inlet side extension portion in contact with a lower surface of the membrane member and rotating on the rotary axis, according to the flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet, to change the shape of the membrane member so that the shape changed membrane member blocks or opens the inlet; and
a resilient plate being located between the membrane member and the lever and being in close contact with both the membrane member and the lever, the resilience of the resilient plate being adjusted so as to allow the pressure of the liquid medicine received through the membrane member to be delivered to the outlet side extension portion of the lever only when the flow rate of the liquid medicine exceeds a predetermined flow rate needed for a patient.
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Abstract
The present invention provides a regulator for medicine infusion capable of preventing a flow rate of a liquid medicine to be injected to a patient from exceeding a predetermined flow rate needed for a patient, and controlling the flow rate of the liquid medicine to be uniformly maintained. The regulator for medicine infusion of the present invention provides the advantages of blocking and continuing the inflow of the liquid medicine by the combination of the elements of the membrane member, the resilient plate and the lever and by the adjusted resilience of the resilient plate, and allowing the liquid medicine to flow at a constant rate by adjusting the resilience of the resilient plate and/or the resilience of the membrane member at predetermined levels. In addition, the regulator for medicine infusion, of the present invention provides the advantages of controlling the flow rate of the liquid medicine to be injected to a patient to be uniformly maintained, and being applicable to intravenous bottles or various medicine injectors and being easily installed in them.
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Citations
19 Claims
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1. A regulator for medicine infusion comprising:
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a housing having an inlet communicating with an inflow conduit which extends to communicate with a liquid medicine storage space, an outlet communicating with an outflow conduit, and an internal space communicating with the inlet and the outlet; a membrane member being located in the internal space of the housing and forming a medicine flow passage between the inlet and the outlet, the membrane member receiving a pressure of a liquid medicine discharged via the medicine flow passage from the inlet to the outlet and the shape of the membrane member being changed depending on a flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet; a lever being located below the membrane member and having an inlet side extension portion and an outlet side extension portion opposed to each other with respect to a rotary axis, the inlet side extension portion in contact with a lower surface of the membrane member and rotating on the rotary axis, according to the flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet, to change the shape of the membrane member so that the shape changed membrane member blocks or opens the inlet; and a resilient plate being located between the membrane member and the lever and being in close contact with both the membrane member and the lever, the resilience of the resilient plate being adjusted so as to allow the pressure of the liquid medicine received through the membrane member to be delivered to the outlet side extension portion of the lever only when the flow rate of the liquid medicine exceeds a predetermined flow rate needed for a patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. (canceled)
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11. A medicine infusion device comprising a regulator for medicine infusion, the regulator comprising:
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a housing having an inlet communicating with an inflow conduit which extends to communicate with a liquid medicine storage space, an outlet communicating with an outflow conduit, and an internal space communicating with the inlet and the outlet; a membrane member being located in the internal space of the housing and forming a medicine flow passage between the inlet and the outlet, the membrane member receiving a pressure of a liquid medicine discharged via the medicine flow passage from the inlet to the outlet and the shape of the membrane member being changed depending on a flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet; a lever being located below the membrane member and having an inlet side extension portion and an outlet side extension portion opposed to each other with respect to a rotary axis, the inlet side extension portion getting in contact with a lower surface of the membrane member and rotating on the rotary axis, according to the flow rate of the liquid medicine discharged via the medicine flow passage from the inlet to the outlet, to change the shape of the membrane member so that the shape changed membrane member blocks or opens the inlet; and a resilient plate being located between the membrane member and the lever and being in close contact with both the membrane member and the lever, the resilience of the resilient plate being adjusted so as to allow the pressure of the liquid medicine received through the membrane member to be delivered to the outlet side extension portion of the lever only when the flow rate of the liquid medicine exceeds a predetermined flow rate needed for a patient. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification