Patent ID: 8585661
Filing Date: 2013-11-19
Classification: A61M

Abstract:
1. A mixture injection port comprising: a channel tube unit including a body portion that is provided with an inner cavity and a leg portion that is provided with a narrow tube portion having a smaller width than that of the inner cavity; a septum covering one end of the channel tube unit and having a slit into which a tube member is inserted; and a circulating member provided in the channel tube unit below the septum, the circulating member being separate from the channel tube unit and comprising: wherein the circulating member is positioned such that a tip of the edge portion faces a gap region between the inner wall of the channel tube unit and the septum deformed by the insertion of the tube member, wherein the circulating member is configured to: circulate the first fluid injected from the inserted tube member to the gap region such that at least a portion of a surface of the septum is in contact with at least a portion of the circulating first fluid redirected by the circulating plate portion to substantially flush away any stagnant matter present on said surface of the septum and then guide the first fluid to the other end of the channel tube unit, and/or circulate the second fluid flowing from the other end of the channel tube unit to the gap region and then guide the second fluid to a top portion of the inserted tube member, wherein an axial position of the circulating member in the channel tube unit is substantially restricted when the tube member is inserted into or pulled out of the slit; and wherein an annular protrusion is formed on the inner cavity of the channel tube such that the plate portion of the circulating member is engaged between the annular protrusion and a step formed between the inner cavity and the narrow tube portion such that an axial position of the circulating member in the channel tube unit is substantially restricted when the tube member is inserted into or pulled out of the slit.