Koyo Sangyo Co., Ltd.

Takayuki Miyazaki

Hiroki Watanabe

Mario Iwakata

Mitsunari Sasagawa

A male connecting device for medical useincludes a male connectorhaving a cylindrical configuration and a threadedly engageable cylinderrotatably coupled to the male connector. A male luer portionof the male connectorand a female luer portionof the female connectorare joined by turning the threadedly engageable cylinderin a tightening direction T. The male connecting devicefurther includes a loosening prevention mechanismthat prohibits rotation of the threadedly engageable cylinderin a loosening direction L with respect to the male connector. The loosening prevention mechanismincludes ratchet teethformed in an inner periphery of the threadedly engageable cylinder, an elastic leafformed in the male connectorand extends in a circumferential direction and an engageable clawprotruded from a free end of the elastic leafand engageable with the ratchet teeth

Male connecting device for medical use

A connecting structure for medical use includes a male assemblyand a female connector. The male assemblyincludes a male connectorand a threadedly engageable cylinder. A male luer portionof the male connectorand a female luer portionof the female connectorare joined by turning the threadedly engageable cylinderin a tightening direction in a state where a female screwof the threadedly engageable cylinderand an engageable protrusionof the female connectorare threadedly engaged with each other. A torque limiting mechanismis disposed between an operation cylindermounted on an outer periphery of the threadedly engageable cylinderand the threadedly engageable cylinder. Engageable teethare formed in an inner periphery of one end portion of the operation cylinderover an entire periphery. A slitis formed in one end portion of the threadedly engageable cylinder. The slit is composed only of a straight portion extending from an end of the threadedly engageable cylinder in an axial direction. An area adjacent to the slitis provided as an elastically deformable portion. A first engageable clawengageable with the engageable teethis formed in the elastically deformable portion

Connecting structure for medical use

A connecting structure for medical use includes a male assembly () and a female connector () having a cylindrical configuration. The male assembly () includes a male connector () having a cylindrical configuration and a threadedly engageable cylinder () rotatably coupled to the male connector (). A male luer portion () of the male connector () and a female luer portion () of the female connector () are joined by turning the threadedly engageable cylinder () in a tightening direction when a female screw () of the threadedly engageable cylinder () and an engageable protrusion () of the female connector () are threadedly engaged with each other. The connecting structure for medical use further includes a loosening prevention mechanism () that prohibits rotation of the threadedly engageable cylinder () in a loosening direction with respect to the male connector () when the male luer portion () and the female luer portion () are joined. The loosening prevention mechanism () includes ratchet teeth () formed in an inner periphery of the threadedly engageable cylinder (), an elastic projection () formed in the male connector () and an engageable claw () protruded from a free end of the elastic projection () and engageable with the ratchet teeth.

A connecting structure for medical use includes a first connecting portionand a second connecting portion. The first connecting portionincludes a threadedly engageable portion, a support portionand a sealing portion. The second connecting portionincludes a threadedly engageable portionand a sealing portion. The threadedly engageable portions are threadedly engageable with each other. The sealing portions are joinable to each other by advancement of a threaded engagement between the threadedly engageable portions. An operating cylinderis mounted on an outer periphery of the support portion. A torque limiting mechanismis disposed between the operating cylinderand the support portion. The sealing portionscan be joined by turning the operating cylinderin a threaded engagement advancing direction. When a rotary torque applied to the operating cylinderreaches a predetermined torque as a result of a resistance generated by the joining of the sealing portions, the operating cylinderis turned free from the support portion. By this arrangement, appropriate sealing properties can be secured and the sealing portions can be prevented from breakages.

Growing community of inventors

Joetsu, Japan

Takayuki Miyazaki