US 7,017,948 B2Granted

Dialyzer connecting coupler

AssigneeNipro Corporation

InventorsTakashi Sunohara, Yasuhiko Morita, Masuda Toshiaki

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Abstract

A connecting coupler which reduces the risk that an endotoxin or the like enters a dialysis solution and that the connecting coupler itself is deformed including a body made of an elastic material in which a tip portion of a connection plug of a dialyzer can be removably fitted into a plug-receiving opening portion of a solution transferring passage inside the body; a line connector which is fitted into the body and communicates with the solution transferring passage; a coupling tube which has a fixing portion fixedly fitted on the tip portion of the body and a coupling portion projecting from the fixing portion toward a front in an axial direction and removably fitable onto the connection plug; and a fixing mechanism which releasably fixes the coupling tube to the connection plug.

A dialyzer connecting coupler for connecting with a connection plug of a dialyzer, comprising:

A) a body which is formed of an elastic material and has a solution transferring passage formed in its inside, the solution transferring passage having a plug-receiving opening portion opened at a tip portion of the solution transferring passage, a tip portion of the connection plug being adapted to be removably fitted into the plug-receiving opening portion;
B) a line connector which is fitted into the body so that its inside communicates with the solution transferring passage, and to which a solution transferring line can be connected;
C) a coupling tube which is formed in a tubular shape and has a fixing portion fixedly fitted on the tip portion of the body and a coupling portion projected from the fixing portion in an axial direction and that is adapted to be removably fitted onto a portion of the connection plug that excludes the tip portion of the plug;
and
D) a fixing mechanism which releasably fixes the coupling tube to the connection plug in a state of pressing the body against the connection plug,
the plug-receiving opening portion being made larger in diameter than the portion of the solution transferring passage that neighbors the plug-receiving opening portion,
an inside bottom of the plug-receiving opening portion forming a first seal surface which, when the connection plug is connected, is brought into abutment with the connection plug and is elastically deformed toward a base portion of the body to liquid-tightly contact with a tip face of the connection plug,
a side surface of the plug-receiving opening portion forming a second seal surface which is made flush with and contiguous to an inside surface of the coupling portion of the coupling tube and, when the connection plug is connected, is brought into abutment with the connection plug and is elastically deformed diametrically outwardly to liquid-tightly contact with the side surface of the tip portion of the connection plug.

5 more elements

Facts

Application

10/869,043Filed 17 Jun 2004

Priority

JP 2003-17402918 Jun 2003

Published

US 2004/0262917 A130 Dec 2004

Granted

28 Mar 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61M 39/1011
Tube connectors or tube couplings: locking means for securing connection; Additional tamper safeties
F16L 37/23
In which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts: by means of balls
A61M 1/14
Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems:…
A61M
Devices for delivering substances into the body

Abstract

Claims2