| 摘要 |
Disclosed is a filter needle in which a filter structure is embedded in the inner space of a fixing member of a syringe needle. The filter structure has an inlet and an outlet, each of which functions as a check valve, and an inlet path and an outlet path provided with a filter, wherein the inlet path and the outlet path are formed at the rear end of the filter structure. Thus, when a medicament liquid flows out from the ampoule and injected into a patient, foreign substances, such as powder generated during the opening of an ampoule, which otherwise might be introduced into the main body of a syringe and injected into a patient, are filtered by a filter. The filter needle enables the medicament liquid to be injected into the patient without exchanging the syringe. The filter needle o is integrally formed of medical silicone to enable easy assembly and safety during use. |
| 主权项 |
1. A filter needle for a syringe including a syringe needle having a needle, a fixing member for fixing the needle and an inner space formed in the fixing member, and a syringe body having a cylinder, a piston and a front end separably installed in the inner space of the fixing member of the syringe needle, the filter needle comprising:
a filter structure installed in the inner space of the fixing member of the syringe needle and including an one-way inlet path having an inlet and an one-way outlet path having an outlet, each of which has a check valve function; and a filter installed in the outlet path at a rear end of the outlet to filter a foreign substance, which is input through the inlet together with a medicament liquid, from the medicament liquid such that the medicament liquid is only injected into a patient through the outlet when injecting the medicament liquid into the patient. |
