Nissho Corporation

Toshiki Yoshida

Hajime Tsujikawa

A fluid-communicating device with valve function comprising a tubular body having an inlet and an outlet, and a blocking body inserted in the tubular body is disclosed. The blocking body comprises a plug portion, and a supporting portion on which a diameter-enlarging portion for enlarging an inner wall of the tubular body is provided. The plug portion of the blocking body is placed in a seal portion of the tubular body to close the tubular body and to prevent the passage of fluid. In use, a tip of a syringe and the like is inserted into the tubular body, so that there is formed a clearance between the outer wall of the plug portion and the inner wall of the seal portion. Fluid passes through the clearance and a fluid passage formed longitudinally on the supporting portion or on an inner wall of the tubular body.

Fluid-communicating device with valve function

A liquid infusion device comprises a bladder assembly and a flow-regulating portion. The bladder assembly comprises a tubular outer shaft, an inner shaft slidably received within the outer shaft and a bladder covering the outer and inner shafts. The bladder can inflate in both its radial and axial directions whereby reducing the residual amounts of a liquid drug in the bladder on dispensation of the liquid drug. The flow-regulating portion comprises a pipe having at least one small hole or a pipe having a very small diameter, so that the accurate regulation of the liquid drug can be performed.

Liquid infusion device

A device for detaching an injection needle from a syringe comprising: a plate-like member, a first opening provided in the plate-like member for inserting an injection needle attached to a syringe, a first needle-detaching means for detaching a slip type needle, said first means comprising a second opening extending laterally from said first opening, and a sliding portion provided on each of both sides of said second opening, each sliding portion having a wedge-like shape, and a second needle-detaching means for a screw type needle, said second means comprising a third opening extending laterally from said first opening, said third opening having a portion having such a size that the hub of said needle is capable of being inserted thereinto, said portion being provided with a projection for preventing the hub of said needle from turning when the syringe is turned. By using the device, both the slip type needle and the screw type needle can be detached from the syringe with safety without touching the needle with finger.

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Mishima, Japan

Toshiki Yoshida