Syringe with connector, connector for syringe, and syringe

Abstract

The present invention aims at offering: a syringe connectable to a port in a fixed manner as well as capable of demonstrating high operational performance even in the case of direct connection where a connector is not used; a connector used for the syringe; and a syringe able to attach the connector thereto. For the attainment of the above objectives, the medical syringe of the present invention is a medical syringe including a cylindrical connection supporting member which enhances the holding force of a luer part inserted into a port when the medical syringe is connected to the port. The connection supporting member is set by sliding along the luer or a syringe body in a state of being movable between a first position near a tip of the luer and a second position away from the tip of the luer. The medical syringe is characterized in that, when the connection supporting member is moved to the second position, the tip of the luer part is exposed.

1 - 14 . (canceled) 
   
   
       15 . A connector-attached syringe, comprising:
 a syringe unit including a syringe body and a plunger;   a luer part extending from the syringe unit   a connector for connecting the syringe unit to a port, the connector being provided to a luer part; and   a fixture attached to the luer part of the syringe unit, wherein   a step is formed on the luer part,   the fixture includes a body having an opening into which the luer part is inserted to thereby hold the fixture and a first engaging portion disposed on an extension portion which extends from the body of the fixture,   a body of the connector is tubular, and the connector includes a second engaging portion on an outer peripheral surface of the body of the connector,   the first and second engaging portions are engaged with each other by inserting the luer part into the body of the connector and elastically contacting the extension portion of the fixture with the outer peripheral surface of the connector, and   engagement of the first and second engaging portions is released by detaching the second engaging portion from the outer peripheral surface of the connector according to a predetermined operation.   
   
   
       16 . A connector for connecting a syringe unit to a port while being held by a fixture having a first engaging portion and attached to a luer part extending from the syringe unit which includes a syringe body and a plunger, said connector comprising:
 a second engaging portion for engaging with the first engaging portion disposed on an outer peripheral surface of the connector, and   wherein engagement of the first and second engaging portions is released by applying, according to a predetermined operation, an external force at least on the fixture in a direction different from a syringe axial direction.   
   
   
       17 . The connector of  claim 16 , wherein
 a body of the connector is tubular, and the second engaging portion is on an outer peripheral surface of the body of the connector,   the connector and the fixture are engaged with each other by inserting the luer part extending from the syringe unit into the body of the connector and elastically contacting the first and second engaging portions, and   the engagement of the connector and the fixture is released by detaching the second engaging portion from the outer peripheral surface of the connector according to the predetermined operation.   
   
   
       18 . A syringe capable of attaching a connector to a fixture disposed at a luer part extending from the syringe unit which includes a syringe body and a plunger, the connector being used for connecting the syringe unit to a port, wherein
 the fixture includes a first engaging portion engageable with the second engaging portion of the connector of  claim 16 .   
   
   
       19 - 36 . (canceled)