| 摘要 |
A safe pump indwelling needle. The safe pump indwelling needle comprises an infusion tube (1) and an indwelling needle (2). The indwelling needle (2) is connected to one end of the infusion tube (1). The safe pump indwelling needle also comprises a liquid retention device (3). The liquid retention device (3) comprises a housing (31), a liquid storing body (32), a one-way three-channel valve body (35), a liquid medicine filter (34), and a cover body (36). The liquid storing body (32), the one-way three-channel valve body (35) and the liquid medicine filter (34) are all located in the housing (31). Three channels of the one-way three-channel valve body (35) are separately connected to the liquid storing body (32), the liquid medicine filter (34) and the cover body (36). The other end of the liquid medicine filter (34) is connected to a liquid medicine tube (33). The liquid medicine tube (33) is in communication with the infusion tube (1) by means of a three-way tube (4). The indwelling needle can prevent panic caused to a patient by venous blood backflow, the problem that the indwelling needle is blocked by blood clots after venous blood backflow is avoided, and accordingly, a secondary danger caused by blocking of blood clots is avoided. |
