| 摘要 |
In an embodiment of the present invention, a device for preventing blood regurgitation which is installed in a venous catheter equipped with a body part having one end connected to a medicinal fluid set connection unit which is coupled to the medicinal fluid set and the other end connected to a catheter syringe needle comprises: a housing which is inserted into the body part in order to have one end contacting the inner circumferential surface of the body part and the other end closely located around the catheter syringe needle, and has a medicinal fluid storing space for storing medicinal fluid supplied through the medicinal fluid set connection unit; and a cut part which is formed to be cut at one side of the housing in order to enable the medicinal fluid to pass therethrough and prevent the medicinal fluid between the body part and the housing from being fed in the medicinal fluid storing space. When force is applied to the medicinal fluid, the medicinal fluid in the medicinal fluid storing space passes through the cut part in order to be fed in a space prepared between the housing and the body part and then provided to the blood vessels of the human body through the catheter syringe needle. At the same time, the medicinal fluid between the body part and the housing is prevented from being fed in the medicinal fluid storing space due to the cut part, so that blood regurgitation to the medicinal fluid set connection unit is prevented. |
