Abstract: A connector includes a housing defining a male connector insertion section into which a male connector is inserted from the outside and an elastic valve body having a slit and blocking the male connector insertion section. The elastic valve body includes a top face having the slit and a bottom face located opposite to the top face. The housing includes a holding section having contact with the top face and the bottom face of the elastic valve body to hold the elastic valve body. The holding section surrounds the slit when the valve body is viewed from the top face. The diameter of a bottom face side holding section having contact with the bottom face is smaller than the diameter of a top face side holding section having contact with the top face.

Abstract: An injection needle assembly is an assembly used by being attached to an injector including an injection barrel filled with medicine and a needle tube, and is provided with a sticking needle tube having a needle tip to be stuck into a skin, a needle holding portion, an engagement portion and a connection portion. The needle holding portion holds the sticking needle tube and a fit tube of the engagement portion is engaged with a needle hub of the injection barrel. The connection portion includes a luminal portion in which there are arranged a proximal end on the opposite side of the needle tip of the sticking needle tube and a needle tip (ejection port) at the needle tube of the injector, and the sticking needle tube and the needle tube communicate with each other in a liquid tight manner.

Abstract: A needle does not come off even if a high back pressure occurs at the skin upper section. Thus, the drug leakage from the skin can be prevented. A drug administration device 1 includes a tubular section 2 having a fluid chamber 7 capable of accommodating a drug and a discharge section 22, a pusher member 3 moving within the tubular section 2, a grip section 4, and a connection section 5. The pusher member 3 includes a rod-shape plunger 31 and a gasket 32. The grip section 4 is disposed along the outer periphery of the tubular section 2 and kept away from the tubular section 2, and the connection section 5 is formed between the tubular section 2 and the grip section 4.

Abstract: An injection needle assembly includes a needle tube having a needle tip to be stuck into a skin, a first member, a second member, an adjustment portion, and a pressing force restricting member. The first member holds the needle tube and the second member holds the first member movably toward the axial direction of the needle tube. A discharge portion of the syringe is fitted into this second member. The adjustment portion is provided at the periphery of the needle tube and includes a needle protrusion surface which abuts the skin in a case in which the needle tube is stuck to the living body. The pressing force restricting member is arranged between the first member and the second member, and restricts the pressing force added from the first member to the skin.

Abstract: A connector includes a housing defining a male connector insertion section into which a male connector is inserted from the outside and an elastic valve body having a slit and blocking the male connector insertion section. The elastic valve body includes a top face having the slit and a bottom face located opposite to the top face. The housing includes a holding section having contact with the top face and the bottom face of the elastic valve body to hold the elastic valve body. The holding section surrounds the slit when the valve body is viewed from the top face. The diameter of a bottom face side holding section having contact with the bottom face is smaller than the diameter of a top face side holding section having contact with the top face.

Abstract: To prevent a coating agent applied to the surface of a needle tube from being infiltrated into the clearance between the needle tube and a needle hub, a device comprises a needle tube that has a needle tip capable of puncturing a living body and that is coated with a coating agent on the surface of a tip-end portion on the side of the needle tip; and a needle hub adapted to hold the needle tube in a state where the needle tip of the needle tube is protruded. The needle hub has a through-hole through which the needle tube is inserted, and a discharge hole extending from the through-hole to the outer surface of the needle hub and adapted to discharge the coating agent infiltrated into the through-hole.

Abstract: A connector includes an inlet port into which liquid is poured and which has a first flow path for the liquid, a liquid discharge port to which a tube body is connectable and which has a second flow path discharging liquid from the first flow path to the connected tube body, a gas discharge which discharges air in the first flow path, and a blocking device which, when the liquid is poured in the first flow path, temporarily stops the liquid flow. Use of the connector involves sealing an opening section of the liquid discharge port, pouring liquid in the inlet port, causing air in the first flow path to be discharged, temporarily stopping the flow of the liquid in the first flow path, unsealing the opening section of the liquid discharge port, connecting the tube body to the liquid discharge port, and resuming flow of the liquid.

Abstract: An injection aid is a tool used by being attached to an injection device having an injection needle and a syringe, and includes an aid main body and a tapered guide. The aid main body includes; an engagement part to be engaged with the syringe; a hollow part through which the injection needle penetrates; and a needle-protruding surface from which a needle tip part of the injection needle protrudes and which is brought into contact with skin when sticking the injection needle into a living body. The tapered guide is arranged in the hollow part of the aid main body and includes an inner surface that becomes continuously reduced in diameter toward the needle-protruding surface.

Abstract: An injection needle assembly includes a needle having a needle point to puncture skin, a needle hub including a first member which holds the needle, and a second member in which a discharge part of a syringe is to be fitted, and an elastic member disposed inside the second member to make liquid-tight close contact with the inner surface of the second member, with the elastic member having an insertion hole in which the needle tube is inserted.

Abstract: A needle does not come off even if a high back pressure occurs at the skin upper section. Thus, the drug leakage from the skin can be prevented. A drug administration device 1 includes a tubular section 2 having a fluid chamber 7 capable of accommodating a drug and a discharge section 22, a pusher member 3 moving within the tubular section 2, a grip section 4, and a connection section 5. The pusher member 3 includes a rod-shape plunger 31 and a gasket 32. The grip section 4 is disposed along the outer periphery of the tubular section 2 and kept away from the tubular section 2, and the connection section 5 is formed between the tubular section 2 and the grip section 4.

Abstract: An injection needle assembly includes a needle tube having a needle tip to be stuck into a skin, a first member, a second member, an adjustment portion, and a pressing force restricting member. The first member holds the needle tube and the second member holds the first member movably toward the axial direction of the needle tube. A discharge portion of the syringe is fitted into this second member The adjustment portion is provided at the periphery of the needle tube and includes a needle protrusion surface which abuts the skin in a case in which the needle tube is stuck to the living body. The pressing force restricting member is arranged between the first member and the second member, and restricts the pressing force added from the first member to the skin.

Abstract: An injection needle assembly is an assembly used by being attached to an injector including an injection barrel filled with medicine and a needle tube, and is provided with a sticking needle tube having a needle tip to be stuck into a skin, a needle holding portion, an engagement portion and a connection portion. The needle holding portion holds the sticking needle tube and a fit tube of the engagement portion is engaged with a needle hub of the injection barrel. The connection portion includes a luminal portion in which there are arranged a proximal end on the opposite side of the needle tip of the sticking needle tube and a needle tip (ejection port) at the needle tube of the injector, and the sticking needle tube and the needle tube communicate with each other in a liquid tight manner.

Abstract: An injection aid is a tool used by being attached to an injection device having an injection needle and a syringe, and includes an aid main body and a tapered guide. The aid main body includes; an engagement part to be engaged with the syringe; a hollow part through which the injection needle penetrates; and a needle-protruding surface from which a needle tip part of the injection needle protrudes and which is brought into contact with skin when sticking the injection needle into a living body. The tapered guide is arranged in the hollow part of the aid main body and includes an inner surface that becomes continuously reduced in diameter toward the needle-protruding surface.

Abstract: To make it possible to integrally form a needle tube and a needle hub by reliably holding and fixing the needle tube with a chuck member and then performing insert molding, a device has a needle tube having a needle tip capable of puncturing a living body; and a needle hub that is adapted to hold the needle tube in a state where the needle tip of the needle tube is protruded and that is formed with a retention hole into which a chuck member is inserted, the chuck member being adapted to hold and fix the circumferential surface of the needle tube when performing insert molding.

Abstract: A connector includes a male connector section having a cavity, a female connector section having a cavity to which another male connector section the same as the male connector section can be connected, a male lock section or a female lock section, disposed adjacent to the male connector section so that the connection direction thereof is parallel to that of the male connector section, a female lock section disposed adjacent to the female connector section so that the connection direction thereof is parallel to that of the female connector section, and to which another male lock section the same as the male lock section can be coupled, or a male lock section disposed adjacent to the female connector section so that the connection direction thereof is parallel to that of the female connector section, and to which another female lock section the same as the female lock section can be coupled, and a seal member formed from an elastic material, for maintaining liquid-tightness of the connection between the other

Abstract: A connector includes a male connector section having a male-side cavity, a female connector section having a female-side cavity to which another male connector section the same as the male connector section can be connected, a seal member formed from an elastic material for maintaining liquid tightness between the connector sections when the other male connector section and the female connector section are connected to each other, and lock mechanisms disposed respectively on the male connector section side and the female connector section side for maintaining the connected condition of the connector sections when the other male connector section and the female connector section are connected to each other.

Abstract: A connector includes an inlet port into which liquid is poured and which has a first flow path for the liquid, a liquid discharge port to which a tube body is connectable and which has a second flow path discharging liquid from the first flow path to the connected tube body, a gas discharge which discharges air in the first flow path, and a blocking device which, when the liquid is poured in the first flow path, temporarily stops the liquid flow. Use of the connector involves sealing an opening section of the liquid discharge port, pouring liquid in the inlet port, causing air in the first flow path to be discharged, temporarily stopping the flow of the liquid in the first flow path, unsealing the opening section of the liquid discharge port, connecting the tube body to the liquid discharge port, and resuming flow of the liquid.

Abstract: An injection needle assembly includes a needle having a needle point to puncture skin, a needle hub including a first member which holds the needle, and a second member in which a discharge part of a syringe is to be fitted, and an elastic member disposed inside the second member to make liquid-tight close contact with the inner surface of the second member, with the elastic member having an insertion hole in which the needle tube is inserted.

Abstract: A liquid transfusing tube and a liquid transfusing tube set in which a liquid transfusing line can be extended readily and quickly. The liquid transfusing tube comprises a flexible tube constituting the liquid transfusing channel, a connector provided at one end part of the tube, and a pointed bottle needle provided at the other end part of the tube and being connected to the side of a liquid transfusing bag containing a liquid being transfused. A roller klemme and a drip tube are provided in the middle of the tube. The connector has two female connectors, a male connector, and an operating lever and the communication pattern between the inner cavity of the female connector and that of the female connector or that of the male connector can be selected by means of the operating lever.

Abstract: A connector includes a first structure including a tubular male connector section that has a male-side cavity, and a tubular female connector section having a female-side cavity, which communicates with the male-side cavity and to which another male connector section the same as the male connector section can be connected, and a second structure including an installation section that can be installed on the first structure, a male lock section disposed adjacent to the male connector section in an installed condition in which the second structure is installed on the first structure, so that the direction of connection thereof is parallel to that of the male connector section, and a female lock section to which another male lock section the same as the male lock section can be connected, which is disposed adjacent to the female connector section in the installed condition, so that the direction of connection thereof is parallel to that of the female connector section, wherein the first structure can be used sel