One kind exempting from needle connector mould group, comprising: a sleeve, an elastic valve body, a conducting element and an extension component. Wherein elastic valve body is arranged the conduit on what conducting element,And a hollow shoulder of elastic valve body supports a limit skew wall of what sleeve,To make elastic valve body connect in what sleeve together with common group of conducting element,Wherein,Selectively under one first use state,The inner wall of one hollow head of elastic valve body coats what conduit narrow portion,Among the first water conservancy diversion interface hiding what gas-tight seam； Under one second use state,One injection tube pushes the top surface for abutting what elastic valve body,One hollow head of elastic valve body is pressed down against,It drives valve interior wall to contradict what and forms the supravasal waist platform of what,And expose the first water conservancy diversion interface except what gas-tight seam,To which the first water conservancy diversion interface can be connected to one of injection tube injection openings. Waist platform is set to reinforce the back pressure of elastic valve body, thereby to reinforce leak preventing effect.一種免針連接頭模組，包括：一套筒、一彈性閥體、一導流件及一延伸部件。其中彈性閥體套設於導流件上的一導管，且彈性閥體的一中空肩部抵頂於套筒的一限位斜壁，從而使彈性閥體連同導流件共同組接於套筒內，其中，選擇性地在一第一使用狀態下，彈性閥體的一中空頭部的內壁包覆於導管窄部，從而第一導流接口藏於氣密縫之中；在一第二使用狀態下，一注射筒下壓抵接於彈性閥體的頂面，彈性閥體的一中空頭部向下擠壓，帶動閥體內壁抵觸於形成於導管上的一腰部平台，並使第一導流接口露出於氣密縫之外，從而第一導流接口能夠連接至注射筒之一注射開口。藉此使腰部平台加強彈性閥體的回壓力，以加強防漏效果。
