Luer connection

• US 4,639,019 A
• Filed: 01/06/1981
• Issued: 01/27/1987
• Est. Priority Date: 06/04/1979
• Status: Expired due to Fees

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Mittleman, Herbert
• Primary Examiner(s): Callaghan, Thomas F.
• Application Number:
  US06/223,072
• Time in Patent Office: 2,212 Days
• Field of Search: 285/332, 285/386, 285/354, 128/214 R, 128/247, 128/221, 604/283
• US Class Current: 285/332
• CPC Class Codes: A61M 39/00 Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use for respiratory devices, e.g. tracheal tubes A61M16/00; artificial heart valves A61F2/24
• CPC Class Codes: F16L 33/30 comprising parts inside the hoses only F16L33/24 takes precedence
• CPC Class Codes: F16L 33/34 with bonding obtained by vulcanisation, gluing, melting, or the like
• CPC Class Codes: F16L 37/133 using flexible hooks F16L37/1215 takes precedence
• CPC Class Codes: F16L 47/041 the plastic pipe end being flared either before or during the making of the connection

Abstract

A luer connection device in which a male luer connector includes an outer sleeve that is slideable up a tapered wall so that compression between the outer sleeve and the tapered wall increases as the outer sleeve moves forwardly. An outwardly extending flange is carried by the body of the male luer connector for cooperation with the outer sleeve, to enable the outer sleeve to be unscrewed from a female luer connector without relative rotation of both the main portion of the male luer connector and the outer sleeve.

Claims

1. A luer connection device which comprises:

a male luer connector comprising a tubular body defining a bore with the front end thereof adapted for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing;

said tubular body having a front portion contiguous with said front end and a main portion that is separated from said front portion by a sleeve-retaining member;

a sleeve having a generally resilient rear portion that is slideable along said main portion and having a front portion that is internally threaded and adapted for receiving an outer flange carried by the female luer connector;

said main portion of said tubular body being tapered outwardly in the forward direction whereby increased compression between the rear portion of the sleeve and said main portion occurs as said sleeve is moved forwardly.

2. A luer connector device as described in claim 1, said sleeve-retaining member comprising an outwardly extending ring carried by said tubular body.

3. A luer connection device as described in claim 1, wherein the rear portion of the sleeve has a smaller internal diameter than the external diameter of said retaining member, whereby said sleeve-retaining member prevents forward movement of the rear portion of the sleeve past a predetermined point.

4. A luer connection device which comprises:

a male luer connector comprising a tubular body defining a bore with a front end thereof adapted for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing;

said tubular body having a front portion contiguous with said front end and a main portion that is separated from said front portion by a sleeve-retaining member, said sleeve-retaining member comprising an outwardly extending ring carried by said tubular body;

a sleeve having a generally resilient rear portion that is slidable along said main portion and having a front portion that is internally threaded and is adapted for receiving an outer flange carried by the female luer connector, the rear portion of the sleeve defining a slot to render the sleeve'"'"'s rear portion significantly resilient;

the rear portion of the sleeve having a smaller internal diameter than the external diameter of said retaining member so that the sleeve-retaining member prevents forward movement of the rear portion of the sleeve past a predetermined point;

said main portion of said tubular body being tapered outwardly in the forward direction whereby increased compression between the rear portion of the sleeve and said main portion occurs as said sleeve is moved forwardly; and

said tubular body carrying an outwardly extending flange rearward of said main portion, said flange and slot being cooperative to prevent relative rotation of said sleeve and tubular body when said flange is within said slot.

5. A luer connection device which comprises:

a male luer connector comprising a tubular body defining a bore with a front end thereof adapted for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing;

said tubular body having a front portion contiguous with said front end and a main portion that is separated from said front portion by a sleeve-retaining member, said sleeve-retaining member comprising an outwardly extending ring carried by said tubular body;

a sleeve that is slidable along said main portion and having a front portion that is internally threaded and is adapted for receiving an outer flange carried by the female luer connector, the rear portion of the sleeve defining a slot;

the rear portion of the sleeve having a smaller internal diameter than the external diameter of said retaining member so that the sleeve-retaining member prevents forward movement of the rear portion of the sleeve past a predetermined point; and

said tubular body carrying an outwardly extending flange rearward of said main portion, said flange and slot being cooperative to prevent relative rotation of said sleeve and tubular body when said flange is within said slot.

6. A luer lock connection device as described in claim 5, said slot having its widest portion at the rear end of said rear portion and tapering inwardly forwardly.

7. A luer connection device which comprises:

a male luer connector comprising a tubular body defining a bore with the front end thereof adapted for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing;

said tubular body having a front portion contiguous with said front end and a main portion that is separated from said front portion by a sleeve-retaining member;

a sleeve having a generally resilient rear portion that is slideable along said main portion and having a front portion that is internally threaded and adapted for receiving an outer flange carried by the female luer connector;

the rear portion of the sleeve defining a slot to render the sleeve'"'"'s rear portion significantly resilient;

said main portion of said tubular body being tapered outwardly in the forward direction whereby increased compression between the rear portion of the sleeve and said main portion occurs as said sleeve is moved forwardly;

said tubular body carrying an outwardly extending flange rearward of said main portion, said flange and slot being cooperative to prevent relative rotation of said sleeve and tubular body when flange is within said slot.

8. A connecting device for a fluid transmission set adapted to interconnect with a projecting flange of a first fluid transmission unit having an internal luer tapering chamber comprising:

a mounting member defining a fluid passage means and a longitudinal axis;

a length of tubing secured to said member;

a collar member rotatably on said member, said collar member having internal threads for engagement with said flange of said first fluid transmission unit;

captive means operatively associated with said member to permit free movement along the longitudinal axis thereof while retaining said collar on said member yet permitting rotatable engagement with said flange;

a luer tapering extending member for fluid-tight fitment into said internal luer tapering chamber of said first fluid transmission unit; and

said captive means including a tapering surface defined by said member for interference with said collar member, said captive means constructed and arranged to permit said collar member to be positioned a substantial distance away from said luer tapering extending member for complete exposure purposes, said captive means further including cooperating means defined by said mounting member and said collar member to provide an interlocking mechanism, said cooperating means positioned on said collar member opposite said internal threads and on said mounting member opposite said tapering surface;

so that when said luer tapering extending member is placed in said luer tapering chamber, said collar member will engage said flange and upon rotation of said collar said luer tapering extending member will be forced into fluid-tight engagement and said collar member will contact said tapering surface, and upon a reverse rotation of said collar member and movement of said collar member away from said flange, said interlocking mechanism will interengage whereby rotation of said collar member will cause rotation of said mounting member without rotation of said first fluid transmission unit.

9. The connecting device as defined in claim 8, wherein said interlocking mechanism includes a shoulder member carried by said mounting member.

10. The connecting device as defined in claim 9 wherein said shoulder member is defined by two opposing flanges and said collar member includes two slot portions constructed and arranged to receive said flanges.

11. The connecting device as defined in claim 8 wherein said interlocking mechanism provides a wrench effect between said captive means and said collar member.

12. A connecting device for a fluid transmission set comprising:

a first member defining a fluid passage means and having a longitudinal axis;

a second member defining a fluid passage means and having a longitudinal axis;

tapering interfitment means constructed and arranged with respect to each said member for fluid-tight engagement;

a length of tubing secured to at least one member opposite said tapering interfitment means;

a flange extending from one of said first or second members adjacent said tapering interfitment means;

a collar member longitudinally and rotatably mounted on one of said first or second members opposite said flange, said collar member having internal threads for engagement with said flange; and

captive means operatively associated with one of said members and said collar member to permit free movement along the longitudinal axis of said member while retaining said collar on said member yet permitting rotatable engagement with said flange, said captive means including a tapering surface defined by said member mounting said collar for interference therewith, said captive means constructed and arranged to permit said collar member to be positioned a substantial distance away from said tapering interfitment means carried by said member mounting said collar member for complete exposure purposes, said captive means further including cooperating means defined by said member mounting said collar member and said collar member to provide an interlocking mechanism, said cooperating means positioned on said collar member opposite said internal threads and on said mounting member opposite said tapering surface,

so that when said tapering interfitment means is interengaged, said collar member will engage said flange and upon rotation of said collar the interfitment means will be forced into fluid-tight engagement and said collar member will engage said tapering surface without rotation of said first or second members, and upon a reverse rotation of said collar member and movement of said collar member away from said flange, said interlocking mechanism will interengage whereby rotation of said collar will cause rotation of said member mounting said collar without rotation of said member with said flange.

13. The connecting device as defined in claim 12 wherein said tapering interfitment means is defined by an internal and external luer fitment with said internal luer fitment and said flange positioned on said first member and said collar and said external luer fitment positioned on said second member.

14. The connecting device as defined in claim 13 wherein said interlocking mechanism includes shoulder members carried by said second member and spaced from said tapering surface of said mounting member.

15. The connecting device as defined in claim 13 wherein said flange is defined by two flanges and extends from said first member positioned immediately adjacent an entrance to said internal luer fitment and interconnected by an annular portion.

16. The connecting device as defined in claim 14 wherein said shoulder members are defined by two oppositely positioned and extending flange members and said collar is defined by two opposing slots constructed and arranged to receive said flange members.

17. The connecting device as defined in claim 16 wherein said flange members extend outwardly from said second member.

18. The connecting device as defined in claim 14 wherein said collar includes an inwardly tapering portion for contact with said tapering surface defined by said mounting member.

19. The connecting device as defined in claim 12 wherein said internal threads of said collar member are continuous.

20. The connecting device as defined in claim 12 wherein said length of tubing is connected to said first member and defines a fluid transmission tubing and said length of tubing is connected to said second member and is fluid transmission plastic tubing.