Male connector

Patent metadata

Field	Value
Publication number	US-2016354288-A1
Application number	US-201415103141-A
Country	US
Kind code	A1
Filing date	Dec 9, 2014
Priority date	Dec 11, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

A male connector ( 1 ) includes a luer portion ( 10 ) connected to the upstream end of a tube ( 8 ) used in enteral feeding, and a lock portion ( 20 ) that is removably attached to the luer portion. The luer portion ( 10 ) includes a tubular male luer ( 11 ) in which a channel ( 17 ) in communication with the tube ( 8 ) is formed. The lock portion ( 20 ) has a hollow tubular shape and is open at two ends, and includes female threading ( 21 ) that opposes the male luer on the inner circumferential face of the lock portion ( 20 ). The male luer ( 11 ) is inserted into the lock portion ( 20 ). Rotation prevention mechanisms ( 16, 26 ) that engage with one another are provided on the luer portion ( 10 ) and the lock portion ( 20 ) such that the lock portion ( 20 ) does not rotate relative to the luer portion ( 10 ).

First claim

1 . A male connector provided at an upstream end of a tube used in enteral feeding, the male connector comprising:
a luer portion connected to the tube; and a lock portion that is removably attached to the luer portion, wherein the luer portion includes a tubular male luer in which a channel in communication with the tube is formed, the lock portion has a hollow tubular shape and is open at two ends, and includes female threading that opposes the male luer on an inner circumferential face of the lock portion, the male luer is inserted into the lock portion, and rotation prevention mechanisms that engage with one another are provided on the luer portion and the lock portion such that the lock portion does not rotate relative to the luer portion.

2 . The male connector according to claim 1 , wherein the luer portion is made of a harder material than the lock portion.

3 . The male connector according to claim 1 or 2 , wherein the rotation prevention mechanisms include a protruding portion provided on the lock portion and a receding portion that is provided in the luer portion, the protruding portion being fitted into the receding portion.

4 . The male connector according to claim 1 ,
wherein the rotation prevention mechanisms include a protruding portion formed on one of the lock portion and the luer portion, and a receding portion formed on another one of the lock portion and the luer portion, the protruding portion includes an inclined face on one side in a circumferential direction, and includes a vertical face on another side in the circumferential direction, and the receding portion includes an inclined face and a vertical face that respectively oppose the inclined face and the vertical face of the protruding portion when the protruding portion is fitted into the receding portion.

5 . The male connector according to claim 1 ,
wherein the male connector can be connected to a female connector that includes an insertion portion for insertion of the male luer and male threading that is to be screwed together with the female threading, and the rotation prevention mechanisms are configured such that when the luer portion and the female connector are rotated in mutually opposite directions in order to separate the male connector and the female connector that are connected to each other, screwing together of the female threading and the male threading is loosened, without the lock portion rotating relative to the luer portion.

6 . The male connector according to claim 1 , wherein the separation prevention mechanisms that engage with one another are provided on the luer portion and the lock portion such that the luer portion and the lock portion do not become separated along a lengthwise direction of the male luer.

7 . The male connector according to claim 6 , wherein the separation prevention mechanisms include screwing structures.

8 . The male connector according to claim 1 ,
wherein the luer portion includes a base end portion on which the male luer is provided, the lock portion includes an extension portion arranged outward of the base end portion, and the extension portion is configured such that rotation torque can be applied to the male connector via the extension portion.

9 . The male connector according to claim 8 ,
wherein the extension portion includes at least one bar-shaped member that extends parallel with a lengthwise direction of the luer portion, and the at least one bar-shaped member is arranged so as to protrude outward from an outer circumferential face of the base end portion.

10 . The male connector according to claim 1 , wherein a liquid-tight seal between the luer portion and the lock portion is formed at a position on a tube side relative to the male luer.

11 . The male connector according to claim 10 , wherein the liquid-tight seal is formed by fitting together of a male tapered face formed on the luer portion and a female tapered face formed on the lock portion.

12 . The male connector according to claim 1 , wherein the male luer and the female threading are compliant with ISO 80369-3.

13 . The male connector according to claim 1 , wherein at least one of the luer portion and the lock portion includes a protrusion or recession for facilitating attachment and detachment of the lock portion to and from the luer portion.

14 . The male connector according to claim 13 ,
further comprising a jig configured so as to engage with the protrusion or recession, wherein the jig is configured such that rotation torque can be applied to the luer portion or the lock portion via the jig.

Assignees

• Jms Co Ltd

Inventors

• Uehara Yasumasa
• Ueda Yutaka
• Takimoto Kazuhiko
• Harada Megumi

Classifications

• A61J15/00 Primary

  Feeding-tubes for therapeutic purposes · CPC title

• A61M39/1055

  Rotating or swivel joints (in general F16L27/00) · CPC title

• A61M2039/1033

  Swivel nut connectors, e.g. threaded connectors, bayonet-connectors · CPC title

• A61M39/12

  for joining a flexible tube to a rigid attachment · CPC title

• A61M39/1011 Primary

  Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence) · CPC title