Abstract: A liquid injection instrument includes an internal structural body having a cylindrical body that has a cylindrical shape and has an inner cavity part in which a drug solution is housed, a hollow needle disposed at a distal part of the cylindrical body, a gasket slidable in the cylindrical body, and a plunger that carries out movement operation of the gasket along an axial direction of the cylindrical body. The liquid injection instrument further includes a cylindrical protector disposed on an outer circumferential side of the internal structural body movably along the axial direction of the internal structural body. The protector has an outside engagement piece and the cylindrical body has an inside engagement piece engageable with the outside engagement piece.

Abstract: A first connector includes a first connector main body configured from an outer tube of cylindrical shape, an inner tube of cylindrical shape, and a hub disposed at a proximal end portion of the outer tube, a hollow needle supported on the hub, a first sealing member supported on the inner tube, a coil spring serving as puncturing portion biasing means for biasing the first sealing member toward a distal direction, and a clamping member disposed upon the outer tube. Upon an inner periphery portion of the proximal end portion of the outer tube, a pawl is formed so as to project to the inner side. Upon an outer periphery portion of a large diameter portion of a main body portion of the hub, a plurality of ratchet teeth which are engageable with the pawl of the outer tube are formed so as to project toward the outer side.

Abstract: This syringe with needle is provided with a needle tube having a needle tip capable of puncturing a living body, and a syringe by insert molding formed integrally with the needle tube. The syringe includes: a main body which is filled with a drug; and a securing section which is formed to be continuous with the main body. The securing section secures the needle tube in a state that the needle tip of the needle tube is protruded. The securing section of the syringe includes a holding hole in which a chuck member for supporting and securing a circumferential surface of the needle tube during the insert molding is inserted and passed.

Abstract: A first connector has a first connector main body configured from an outer tube having a cylindrical shape, an inner tube having a cylindrical shape and a hub, a hollow needle supported on the hub, a first sealing member supported on the inner tube, a coil spring serving as puncturing portion biasing means for biasing the first sealing member in a direction toward the distal end thereof, and a clamping member disposed on the outer tube. The hub is disposed at a proximal end portion of the outer tube. The hub is disposed such that, although the hub is initially connected to the outer tube by a breakable welded portion, when the welded portion is broken, the hub is permitted to rotate around an axis of the outer tube with respect to the outer tube.

Abstract: A first connector includes a first connector main body configured from an outer tube of cylindrical shape, an inner tube of cylindrical shape, a hub disposed at a proximal end portion of the outer tube, and a clip disposed so as to be removable at the proximal end portion of the outer tube, a hollow needle supported on the hub, a first sealing member supported on the inner tube, a coil spring serving as puncturing portion biasing means for biasing the first sealing member toward the distal direction, and a clamping member disposed upon the outer tube. In a state in which the clip is mounted to the proximal end portion of the outer tube, a protrusion of the clip engages with a protrusion of the hub, and thereby rotation of the hub is prevented. If the clip is removed, the hub becomes rotatable with respect to the outer tube.

Abstract: A first connector 2 is provided with: a first connector body composed of a cylindrical outer tube 4, a cylindrical inner tube 7, and a hub 12; a hollow needle 5 supported by the hub 12; a first sealing member supported by the inner tube 7; a coil spring 8 serving as a biasing means which biases the hub 12 in a proximal direction and also serving as a to-be-pierced section biasing means which biases the first sealing member in the distal direction; and gripping and pressing members disposed on the outer tube 4. A plurality of pawls 126 are formed on a flange 124 of the hub 12. A plurality of ratchet teeth 41 are formed on the inner circumferential portion of a proximal portion of the outer tube 4. Each of the ratchet teeth 41 and each of the pawls 126 of the hub 12 form an engagement-disengagement mechanism 13.

Abstract: A drug solution injector comprises a needle tube having a sharp needlepoint, a bottomed outer cylinder arranged on the base end side of the needle tube and having an inside space communicable with the inside of the needle tube, a gasket slidable within the outer cylinder, a drug solution in the space formed by the outer cylinder and the gasket, a support member supporting the needle tube and having a flow channel communicating with the inside of the needle tube, an operation mechanism permitting selection between a communicated state wherein the inside of the needle tube and the inside of the outer cylinder communicate with each other through the flow channel and a blocked state wherein the communication is blocked by rotating the support member, and an exposure preventer for preventing exposure of the needlepoint.

Abstract: A connector assembly includes a first connector having a tubular first connector body, a hollow needle inside the first connector body and a first sealing component piercable by the needle, and a second connector having a tubular second connector body and a second sealing component. The second sealing component is in the second connector body, is attached to a first piercing section when inserted into the first connector body, and, in that state, is pierced by the needle together with the first piercing section. The connector assembly also includes a restriction which, when the second connector is inserted into the first connector, temporarily interrupts and restricts the insertion operation, but allows resumption of such operation when the restriction is removed, and which, when the second connector is withdrawn from the first connector, temporarily interrupts and restricts the withdrawing operation, but allows such operation to resume when the restriction is removed.

Abstract: A double-ended needle assembly includes: a double-ended needle having a tip-end and base-end needle tips; a support member attached to the syringe, has a needle insertion section allowing the base-end needle tip to be inserted, and supports the needle so it can move along axially; and a cover member secured relative to the needle, covers the tip-end needle tip, and moves the needle. In the initial state, the tip-end needle tip is covered by the cover member and the base-end needle tip is not inserted into the needle insertion section. When the state is shifted from the initial state to a state in which the cover member moves in the base end direction with the needle, the base-end needle tip is inserted into the needle insertion section. The secured state of the cover member relative to the needle is then released, and the cover member can separate from the needle.

Abstract: A puncture needle assembly has a needle tube, a protector capable of moving between a first position at which the protector covers the tip of the needle tube and a second position at which the tip is exposed, a body for movably supporting the protector and having an elastic deformable section, and an engagement preventing member removably mounted to the base end of a protector body. The protector has a rib. A portion on the head end side of the rib forms a contact section, and a portion on the base end side of the rib forms an engaging section engaging with the elastic deformable section. When the protector moves from the first position to the second position, the engagement preventing member moves together with the protector to prevent the engaging section from engaging with the elastic deformable section and elastically deforms the elastic deformable section.

Abstract: A puncture needle assembly including: a puncture device which is provided with a needle tube having a sharp needlepoint at the tip thereof, and also with a protector which is supported relative to the needle tube so as to be movable in the axis direction of the needle tube between a first position at which the protector covers at least the needlepoint of the needle tube and a second position at which the protector exposes the needlepoint and is located further on the base end side than the first position; a cap which is removably mounted to the puncture device; a lock which can, when the protector is at the first position, maintain the position of the protector; and a lock release which, when the protector moves from the first position to the second position, enables the protector to move by releasing the locked state maintained by the lock.

Abstract: A lancet instrument detachably fitted to a lancing apparatus, comprising a lancet having a lancet body with a sharp lancet tip at its tip, a lancet hub fixed to the lancet body so that the lancet tip is exposed, and an elastic deformation part extended from the lancet hub in the tip direction and elastically deformable so that the distance thereof from the lancet body can be changed, a ring-like member fitted to the outer periphery of the elastic deformation part and releasable in the tip direction by changing the distance between the elastic deformation part and the lancet body, and a casing having a ring-like member contact part storing the lancet so as to be movable in the longitudinal direction and formed in the inner peripheral part thereof so that the ring-like member is brought into contact therewith and stopped to move in the tip direction and a tip opening through which the lancet tip can be projected.

Abstract: A connector assembly is provided with a first connector equipped with a first connector body, a hollow needle supported on the inner side of the first connector body and having a side hole (53), and a first sealing member having a head which can be pierced through by the hollow needle; a second connector equipped with a second connector body and also with a second scaling member which can, when in a mounted state, be pierced through by the hollow needle; and a close-contact maintaining means which can, when in the mounted state, maintain that the head and the second sealing member are in close contact with each other. When the second connector becomes pulled out of the first connector, the head and the second sealing member are held in close contact with each other by the close-contact maintaining means until the hollow needle is pulled out of the second scaling member.

Abstract: A puncture needle assembly has a needle tube, a protector capable of moving between a first position at which the protector covers the tip of the needle tube and a second position at which the tip is exposed, a body for movably supporting the protector and having an elastic deformable section, and an engagement preventing member removably mounted to the base end of a protector body. The protector has a rib. A portion on the head end side of the rib forms a contact section, and a portion on the base end side of the rib forms an engaging section engaging with the elastic deformable section. When the protector moves from the first position to the second position, the engagement preventing member moves together with the protector to prevent the engaging section from engaging with the elastic deformable section and elastically deforms the elastic deformable section.

Abstract: A body fluid collecting device is used by mounting a tip with a puncture needle and a front end opening at the front end portion thereof for allowing the puncture needle to pass therethrough. The device additionally includes a device body, having a contact part for fitting skin thereto, a tip mounting part having a storage space formed therein capable of storing the tip, a pump for depressurizing the inside of the storage space, and a movable means. The movable means is capable of moving the front end portion of the tip mounting part along a longitudinal direction of the puncture needle, and within a specified range, when the storage space is depressurized by the pump under a condition in which the tip is stored in the storage space, the skin is fitted to the contact part, and the front end opening is sealed.

Abstract: A drug solution injector comprises a needle tube having a sharp needlepoint, a bottomed outer cylinder arranged on the base end side of the needle tube and having an inside space communicable with the inside of the needle tube, a gasket slidable within the outer cylinder, a drug solution in the space formed by the outer cylinder and the gasket, a support member supporting the needle tube and having a flow channel communicating with the inside of the needle tube, an operation mechanism permitting selection between a communicated state wherein the inside of the needle tube and the inside of the outer cylinder communicate with each other through the flow channel and a blocked state wherein the communication is blocked by rotating the support member, and an exposure preventer for preventing exposure of the needlepoint.

Abstract: A lancet instrument detachably fitted to a lancing apparatus, comprising a lancet having a lancet body with a sharp lancet tip at its tip, a lancet hub fixed to the lancet body so that the lancet tip is exposed, and an elastic deformation part extended from the lancet hub in the tip direction and elastically deformable so that the distance thereof from the lancet body can be changed, a ring-like member fitted to the outer periphery of the elastic deformation part and releasable in the tip direction by changing the distance between the elastic deformation part and the lancet body, and a casing having a ring-like member contact part storing the lancet so as to be movable in the longitudinal direction and formed in the inner peripheral part thereof so that the ring-like member is brought into contact therewith and stopped to move in the tip direction and a tip opening through which the lancet tip can be projected.