Seal valve, connection port, mix-feed tube, connection device for liquid infusion circuit, and connection system for liquid infusion circuit that are for medical device

A connection port, wherein

• a sealing valve for a medical apparatus is mounted in an opening portion of the medical apparatus, in which the sealing valve is made of an elastic material to be semispherical itself being directed outward convexly, and the sealing valve has a semispherical space inside thereof and has the valve hole at a top thereof,
• the sealing valve having a valve hole at a center thereof, characterized in that the valve hole of the sealing valve is opened by pressing and deforming the sealing valve by means of a tip end of a male connection port, without allowing the tip end of the male connection port to run through the sealing valve,
• the connection port has a sleeve portion of a cap secured to the medical apparatus and provided to surround the opening portion of the medical apparatus, the sleeve portion being arranged to press the sealing valve for the medical apparatus so as to press and hermetically seal the valve hole of the sealing valve for the medical apparatus, the sleeve portion including a screwing piece on its outer circumferential surface, the sleeve portion allowing a lock type syringe to be inserted into and screwed with, and
• when the lock type syringe has been inserted into the sleeve portion, a tip end of the lock type syringe presses and deforms the sealing valve for the medical apparatus so as to open the valve hole of the sealing valve for the medical apparatus, without running through the sealing valve for the medical apparatus.

A mixed injection tube in which the sealing valve for a medical apparatus is mounted to an opening portion of a main body of the mixed injection tube, wherein the sealing valve is made of an elastic material to be semispherical itself being directed outward convexly, and the sealing valve has a semispherical space inside thereof and has the valve hole at a top thereof,

• characterized in that the valve hole of the sealing valve is opened by pressing and deforming the sealing valve by means of a tip end of a male connection port, without allowing the tip end of the male connection port to run through the sealing valve,
• the main body including connection ports at both ends to each of which an infusion tube is to be connected, and a channel having the opening portion at its center, a cap member with a sleeve portion provided on its ceiling being mounted to the opening portion of the main body, the sleeve portion of the cap member secured to the medical apparatus, the sleeve portion being arranged to press the sealing valve for the medical apparatus so as to press and hermetically seal the valve hole of the sealing valve for the medical apparatus,
• the mixed injection tube characterized in that
• the mixed injection tube comprises:
• a protruding stria provided at a tip end on an outer circumferential surface of the sleeve portion, with which a female screw structure formed on an inner circumferential surface of a collar of a lock type syringe is to be screwed;
• and
• a resistance application portion, provided in a middle part on the outer circumferential surface of the sleeve portion, for temporarily stopping and holding a lock type syringe inserted into the sleeve portion at an intermediate site of the sleeve portion while the valve hole of the sealing valve for the medical apparatus is closed,
• during insertion of the lock type syringe into the sleeve portion, the lock type syringe is temporarily stopped at the intermediate site of the sleeve portion by the resistance application portion, and then, when a male connection port of the lock type syringe is inserted into the sleeve portion more deeply, a tip end of the male connection port presses and deforms the sealing valve for the medical apparatus, thereby opening the valve hole of the sealing valve.

A connection tool for connecting to an infusion circuit including one medical infusion line as a main line, a plurality of other medical infusion lines, and a plurality of syringes, comprising:

• a main connection tube to be provided in a midway portion of a tube of the one medical infusion line;
• and a plurality of branch connection tubes branching from a surrounding area of the main connection tube, wherein a sealing valve for a medical apparatus is mounted in a top-end opening portion of each of the branch connection tubes, in which the sealing valve is made of an elastic material to be semispherical itself being directed outward convexly, and the sealing valve has a semispherical space inside thereof and has a valve hole at a top thereof,
• characterized in that the valve hole of the sealing valve is opened by pressing and deforming the sealing valve by means of a tip end of a male connection port, without allowing the tip end of the male connection port to run through the sealing valve,
• a sleeve portion of a cap secured to the medical apparatus, the sleeve portion being arranged to press the sealing valve for the medical apparatus so as to press and hermetically seal the valve hole of the sealing valve for the medical apparatus.

A connection system for an infusion circuit, in which a connection tool for an infusion circuit is attached to one medical infusion line, in which the connection tool includes one medical infusion line as a main line, a plurality of other medical infusion lines, and a plurality of syringes, and the connection tool comprises:

• a main connection tube to be provided in a midway portion of a tube of the one medical infusion line;
• and a plurality of branch connection tubes branching from a surrounding area of the main connection tube, wherein a sealing valve for a medical apparatus is mounted in a top-end opening portion of each of the branch connection tubes, in which the sealing valve is made of an elastic material to be semispherical itself being directed outward convexly, and the sealing valve has a semispherical space inside thereof and has the valve hole at a top thereof,
• characterized in that the valve hole of the sealing valve is opened by pressing and deforming the sealing valve by means of a tip end of a male connection port, without allowing the tip end of the male connection port to run through the sealing valve;
• and
• a sleeve portion of a cap secured to the medical apparatus, the sleeve portion being arranged to press the sealing valve for the medical apparatus so as to press and hermetically seal the valve hole of the sealing valve for the medical apparatus,
• the valve hole of the sealing valve for the medical apparatus mounted in each connection port of the connection tool is opened by pressing and deforming the sealing valve for the medical apparatus by means of a tube of the other medical infusion line or a tip end of a syringe, without insertion of the tube of the other medical infusion line or the syringe, to allow connection of the tube of the other medical infusion line or the syringe to the one medical infusion line.