| CPC F04B 19/006 (2013.01) [A61M 5/142 (2013.01); A61M 5/145 (2013.01); A61M 39/24 (2013.01); F04B 19/00 (2013.01); B01L 2400/0418 (2013.01)] | 13 Claims |
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1. A patch-type liquid medicine delivery device configured to attach to a human body, the device comprising:
a driver configured to move a liquid medicine toward the human body by applying pressure to the liquid medicine; and
a check valve assembly coupled to the driver, wherein the liquid medicine pushed by the driver passes through the check valve assembly,
wherein the driver comprises:
a first pump housing provided with a space where an operation fluid is received;
a first electrode;
a membrane of which one side is combined to the first electrode;
a second electrode combined to other side of the membrane;
a second pump housing combined to one side of the second electrode and provided with a space where the operation fluid is received; and
a diaphragm combined to the first pump housing,
wherein the check valve assembly comprises:
a valve housing comprising a liquid medicine inflow extension pipeline and a liquid medicine discharge extension pipeline;
an inflow check valve passing the liquid medicine toward the driver;
a discharge check valve passing the liquid medicine in a direction of injection into the human body;
a first fixing hole fixing the inflow check valve to the valve housing; and
a second fixing hole fixing the discharge check valve to the valve housing,
wherein the liquid medicine inflow extension pipeline of the valve housing is disposed between the driver and the inflow check valve,
wherein the second fixing hole is disposed between the driver and the discharge check valve, and
wherein one end of the first fixing hole in an axial direction is fitted to the liquid medicine inflow extension pipeline of the valve housing and other end of the first fixing hole in the axial direction is exposed to the outside and is not coupled to the driver.
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