Adaptor for a Needleless Access Device and Method for Connecting Said Device Thereon

Patent metadata

Field	Value
Publication number	US-2016158518-A1
Application number	US-201414906378-A
Country	US
Kind code	A1
Filing date	Jul 22, 2014
Priority date	Jul 23, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

An adaptor for connecting a drug delivery device to a needleless access device having a straight external thread, including engagement means for mounting said adaptor on the drug delivery device, and an internal thread intended to cooperate with said external thread on a determined length, said internal thread showing on a distal part of said length a first major diameter mating that of said straight external thread, wherein said internal thread shows on a proximal part of said length a second major diameter, where the second major diameter is strictly smaller than the first major diameter, said internal thread further including a tapered portion linking said proximal part to said distal part.

First claim

1 . An adaptor for connecting a drug delivery device to a needleless access device provided with a straight external thread, the adaptor comprising a globally tubular body having a proximal region and a distal region, said proximal region adapted for mounting said adaptor on the drug delivery device, said distal region having on an inner wall an internal thread intended to cooperate with said external thread on a determined length of said internal thread so as to connect said needleless access device to said adaptor, said internal thread having on a distal part of said length, said distal part having a length, a first major diameter of constant value mating that of said straight external thread, wherein said internal thread has on a proximal part of said length a second major diameter, where said second major diameter is strictly smaller than said first major diameter, wherein said internal thread further comprises a tapered portion linking said proximal part to said distal part, said tapered portion having a length.

2 . The adaptor according to claim 1 , wherein the ratio of said second major diameter to said first major diameter ranges from 0.95 to 0.98.

3 . The adaptor according to claim 1 , wherein said proximal part having a length, said second major diameter has a constant value over the length.

4 . The adaptor according to claim 1 , wherein a ratio of the length of the distal part to the length of the tapered portion ranges from 0.9 to 1.1.

5 . The adaptor according to claim 1 , comprising a proximal inner rim frictionally engageable on a distal tip of the drug delivery device.

6 . The adaptor according to claim 5 , wherein the inner rim is radially expandable.

7 . The adaptor according to claim 1 , wherein a ratio of the length of the distal part to the length of the proximal part ranges from 1.125 to 1.325.

8 . The adaptor according to claim 1 , wherein a ratio of the length of the tapered portion to the length of the proximal part ranges from 1.125 to 1.325.

9 . A drug delivery device comprising a distal tip defining an axial passageway for a transfer of a product contained in said drug delivery device, wherein the drug delivery device further comprises at least one adaptor according to claim 1 mounted on said distal tip.

10 . The drug delivery device according to claim 9 , wherein the distal tip is made of glass.

11 . The drug delivery device according to claim 9 , wherein the distal tip is conical and distally tapered.

12 . A method for connecting a needleless access device provided with a straight external thread onto an adaptor according claim 1 , comprising at least the step of screwing said straight external thread into the internal thread of the adaptor on said determined length of said internal thread.

13 . A method for connecting a drug delivery device to a needleless access device provided with a straight external thread, comprising the following steps:
providing an adaptor according to claim 1 , engaging said adaptor on the drug delivery device, and screwing said straight external thread into the internal thread of the adaptor on said determined length ha said internal thread.

Assignees

• Becton Dickinson France

Inventors

• Hallynck Sylvain
• Wools Robin
• Maritan Lionel
• Devouassoux Thomas

Classifications

• A61M2039/1077

  Adapters, e.g. couplings adapting a connector to one or several other connectors · CPC title

• A61M2039/1038

  Union screw connectors, e.g. hollow screw or sleeve having external threads · CPC title

• A61M39/1011

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

• A61M5/3134

  characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula · CPC title

• A61M2039/1033

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