Connector

Abstract

The present invention is directed to a connector with which negative pressure in the channel space in the connector can be prevented during luer removal, in a closed-system connector. A slit (49) is furnished in valve body (40) of three-way stopcock (100). During luer access and luer removal, first and second moving parts (M1and (M2) to the left and right of slit (49) enter and withdraw from first and second valve body accommodating chambers (51) and (52), respectively. First and second valve body accommodating chambers (51) and (52) are formed outside of channel space (S), so the operation whereby first and second moving parts (M1) and (M2) enter and withdraw during luer access and luer removal does not affect the change in volume of channel space (S) and negative pressure can be prevented from occurring in channel space (S) by the aforementioned entry and withdrawal.

Description

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view of a three-way stopcock pertaining to a first embodiment of the present invention.

FIG. 2 is a plan view of a three-way stopcock pertaining to a first embodiment of the present invention.

FIG. 3 is a plan view of a three-way stopcock pertaining to a first embodiment of the present invention.

FIG. 4 is a cross section along A-A in FIG. 1.

FIG. 5 is a cross section along B-B in FIG. 2

FIG. 6 is an oblique view of a valve body pertaining to a first embodiment of the present invention.

FIG. 7 is an exploded oblique view of a valve body pertaining to a first embodiment of the present invention.

FIG. 8 shows operation when the valve body furnished for a connector pertaining to a first embodiment of the present invention is opened and closed; (a) shows the state before the luer part pushes against the valve body, (b) shows the state when the luer part is pushing against the valve body, and (c) shows the state when the luer part has penetrated the slit in the valve body and it is opened.

FIG. 9 shows the operation of a valve body and an auxiliary valve furnished in a connector pertaining to a second embodiment of the present invention when they are opened and closed; (a) shows the state before the luer part pushes against the valve body, (b) shows the state when the luer part is pushing against the valve body, (c) shows the state when the luer part has penetrated the slit in the valve body but the auxiliary valve body has not been pushed, and (d) shows the state when the luer part has pushed against the auxiliary body and has opened it.

FIG. 10 is a plan view of a coinfusion tool to which the present invention is applied.

FIG. 11 is a front view of a coinfusion tool to which the present invention is applied.

FIG. 12 is a left side view of a coinfusion tool to which the present invention is applied.

FIG. 13 is a cross section along C-C in FIG. 10.

FIG. 14 is a cross section along D-D in FIG. 11.

FIG. 15 is a plan view of a terminal connector to which the present invention is applied.

FIG. 16 is a front view of a terminal connector to which the present invention is applied.

FIG. 17 is a left side view of a terminal connector to which the present invention is applied.

FIG. 18 is a cross section along E-E in FIG. 15.

FIG. 19 is a cross section along F-F in FIG. 16.

FIG. 20 is a cross section of a three-way stopcock pertaining to a third embodiment of the present invention; (a) shows the state when the valve body is opened, and (b) shows the state when the valve body is closed.

Claims

1. A connector having a fluid inlet port and a fluid outlet port, said connector including a valve associated with the fluid inlet port such that the connection of a liquid supply means to said fluid inlet port causes the valve to move to an open position, characterized in that the valve comprises an accommodating chamber separate from a fluid flow channel and a movable sealing body arranged to move in said accommodating chamber in response to pressure exerted by said liquid supply means.

2. The connector according to claim 1, wherein said valve comprises two movable sealing bodies movable in respective accommodating chambers and wherein when said valve is in a closed position, said sealing bodies abut one another.

3. The connector according to claim 2, wherein said sealing bodies are made of a resiliently deformable material.

4. The connector according to claim 2, wherein said sealing bodies have a base region, a hemifrustroconical region, a hemicylindrical region and a support arm attached to said hemicylindrical region.

5. The connector according to claim 4, wherein in said closed position, only said base regions are positioned within respective accommodating chambers.

6. The connector according to claim 2, wherein said accommodating chambers include respective venting channels.

7. The connector of claim 2, further including a second valve.

8. The connector of claim 7, wherein said second valve is a leaf valve positioned immediately adjacent said first valve.

9. The connector according to claim 1, wherein said movable sealing body comprises a first part arranged to move in a first accommodating chamber and a second part arranged to move in a second accommodating chamber.

10. The connector according to claim 1, wherein said connector includes a second fluid inlet port.

11. The connector according to claim 10, wherein said connector includes a valve for controlling the supply of fluid from said first and second fluid inlet ports to said outlet port.

12. The connector according to claim 10, wherein said outlet port and said second fluid inlet port are push-connectable to a fluid transport tube.

13. The connector according to claim 1, wherein said fluid inlet port is a luer connector port.