Patent References 3851647 Single and multiple sample needle assembly with vein entry indicator Catheter introduction set Sterile connection device Hub assemblies and extensions for indwelling catheter tubes and method Medical connector Medical connector Patent #: 5098395 InventorsApplicationNo. 786567 filed on 11/01/1991US Classes:604/168.01, Having telltale for showing entry of blood into conduit604/900TELLTALE SHOWING ENTRY OF BLOOD INTO BODY INSERTED CONDUITExaminersPrimary: Yasko, John D.Attorney, Agent or FirmInternational ClassA61M 005/178AbstractA medical connector (10) disclosed comprises a first connector member (10) having an elongated hollow introducer needle (14). The introducer needle (14) has first and second end portions (16,18) and first and second spaced openings (20,22) to the hollow of needle (14) between the end portions (16,18). A second connector member (28) is connectable with the first connector member (12). The second connector member (28) includes a flashback chamber (30) having a rubber septum (32) and also a catheter tip (34) mounted thereon. The introducer needle (14) is axially movable through the rubber septum (32), flashback chamber (30), and catheter tip (34) to establish an opening in a patient's vein for placement of the catheter (34). The movement of the introducer needle (14) positions the first and second openings (20,22) within the flashback chamber (3) when the opening in the patient's vein is established whereby to provide venting of the needle (14 ) and flashback chamber (30) as the patient's blood is communicated through the first end portion (16) and into the flash-back chamber (30) providing visual confirmation of a successful stick by the presence of blood within the flashback chamber (30) while the air is displaced from the flashback chamber (30) through the second portion (18) and the hydrophobic vent filter in hub (36). A vent filter in hub (36) prevents blood spillage into the first connector member (10).Field of SearchHaving means for locating or identifying point where body is to be pierced (e.g., apertured body fitting template, etc.)Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.) TELLTALE SHOWING ENTRY OF BLOOD INTO BODY INSERTED CONDUIT Body piercing condit (e.g., needle, etc.) Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct | |