CA1222786A - Luer lock - Google Patents
Luer lockInfo
- Publication number
- CA1222786A CA1222786A CA000401096A CA401096A CA1222786A CA 1222786 A CA1222786 A CA 1222786A CA 000401096 A CA000401096 A CA 000401096A CA 401096 A CA401096 A CA 401096A CA 1222786 A CA1222786 A CA 1222786A
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- tubular body
- luer connector
- flange
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A luer lock 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 coop-eration with the outer sleeve, to enable the outer sleeve to be unscrewed from a female luer connector with-out relative-rotation of both the main portion of the male luer connector and the outer sleeve. The sleeve has a rear portion that is resilient and that defines a slot which increases the resiliency of the rear portion.
A luer lock 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 coop-eration with the outer sleeve, to enable the outer sleeve to be unscrewed from a female luer connector with-out relative-rotation of both the main portion of the male luer connector and the outer sleeve. The sleeve has a rear portion that is resilient and that defines a slot which increases the resiliency of the rear portion.
Description
~2~
This is a division of Canadi~n Appli.cation Serial No.
351,240 filed Ma~ 5, 1980 and assigned to the assignee of this applic~tion.
BACKGRO~D OF THE INVENTION
The present invention concerns an improved luer lock connection device.
Luer lock connectors are known in which the male luer connector carries an internally threaded outer sleeve to establish a cooperating threaded engagement with the female luer connector which is externally threaded or carries a radially extendin~ flange. Some prior art luer lock connection devices have-been found IO to leak and this could result in air embolism or could create contamination problems. Certain prior art luer lock connection devices have ~een found difficult to use because once the connection is made, disengagement of the male luer connector from the female luer connector is extremely difficult.
It is an object of the present invention to provide a luer lock connection device which has a fluid-type connection.
Another object of the present invention is to provide a luer lock connection device which enables clear inspection of the connection.
A further object of the present invention is to provide a luer lock connection device in which the matino parts are preloaded prior to locking.
A still further object of the present invention is to provide a luer lock connec~ion device which is simple in construction and is eficient to manufacture.
Other objecLs and advantages of the present inven-tion wi]l become apparent as the description proceeds.
~2~7~36 The invention according to the parent applica-tion meets these objec-ts by providing a luer lock connection which includes a male luer connector comprising a tubular body and defining a bore with a fron-t end thereof adapted for insertion into a female luer connector and a rear end thereof adapted for coupling to tubin~. The tubular body has a front portion that is contiguous with the front end and a main portion that is separated from the front portion by a sleeve-re-taining member. A sleeve is provided and is slidable along the rnain portion. The sleeve also has a front portion that is internally threaded and is adapted for receiving a female luer connector with ex-ternal threads or an outer flange. The main portion of the tubular body is tapered outwardly in the Eorward direction. In this manner, increased compression between the rear portion of the sleeve and the main portion of the tubular body occurs as the sleeve is moved forwardly.
In the illustrative embodiment, the sleeve retaining member comprises an outwardly extending ring carried by the tubular body. The rear portion of the sleeve has a smaller internal diameter than the external diameter of the outwardly extending ring so that the outwardly extending ring prevents forward movement of t~e rear portion of the sleeve past a predeter~lined point.
r~
SUMMARY OF THE INVENTION 1~278~
The invention according to -this divisional application provides a luer lock connection device which comprises: a male luer connec-tor comprising a tubular body defining a bore with the front end thereof adapted for in-sertion into a female luer connector and the rear end there-of adapted for coupling to tubing; the tu~ular body having a front portion contiguous with the front end and a main portion tha-t is separated from the front portion by a sleeve-retaining member; a sleeve having a rear portion that is slidable along the 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.
~2~86 In the illus~.rative embodiment, ~he rear portionof the sleeve defines a pal.r of opposed slots to render the sleeve's rear portion significantly.resilient. The tubular body carries a pair of outwardly extending flanges rearward of the main portion, with the flanges and slots being cooperative to prevent relative rotation of the sleeve and tubular body when the flanges are within the slots.
A more detailed explanation of the invention is provided in the following descrip-tion and claims, and is illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a perspective view o~ a luer lock ,.
connection device constructed in accordance with the principles of the present invention;
FIGURE 2 is a cross-sectional elevation of the male luer connector of the device of Figure l; and . FIGUP~ 3 is an enlarged cross-secti.onal elevation of the sleeve carried by the male luer connector of Figures 1 and 2 and its connection to the female luer connector.
DET~ILED DESCRIPTION OF THE
ILLUSTRATIVE EMBODI~ENT
Referring to ~he figures, a luer lock connection device is shown therein comprising a male luer connector .
This is a division of Canadi~n Appli.cation Serial No.
351,240 filed Ma~ 5, 1980 and assigned to the assignee of this applic~tion.
BACKGRO~D OF THE INVENTION
The present invention concerns an improved luer lock connection device.
Luer lock connectors are known in which the male luer connector carries an internally threaded outer sleeve to establish a cooperating threaded engagement with the female luer connector which is externally threaded or carries a radially extendin~ flange. Some prior art luer lock connection devices have-been found IO to leak and this could result in air embolism or could create contamination problems. Certain prior art luer lock connection devices have ~een found difficult to use because once the connection is made, disengagement of the male luer connector from the female luer connector is extremely difficult.
It is an object of the present invention to provide a luer lock connection device which has a fluid-type connection.
Another object of the present invention is to provide a luer lock connection device which enables clear inspection of the connection.
A further object of the present invention is to provide a luer lock connection device in which the matino parts are preloaded prior to locking.
A still further object of the present invention is to provide a luer lock connec~ion device which is simple in construction and is eficient to manufacture.
Other objecLs and advantages of the present inven-tion wi]l become apparent as the description proceeds.
~2~7~36 The invention according to the parent applica-tion meets these objec-ts by providing a luer lock connection which includes a male luer connector comprising a tubular body and defining a bore with a fron-t end thereof adapted for insertion into a female luer connector and a rear end thereof adapted for coupling to tubin~. The tubular body has a front portion that is contiguous with the front end and a main portion that is separated from the front portion by a sleeve-re-taining member. A sleeve is provided and is slidable along the rnain portion. The sleeve also has a front portion that is internally threaded and is adapted for receiving a female luer connector with ex-ternal threads or an outer flange. The main portion of the tubular body is tapered outwardly in the Eorward direction. In this manner, increased compression between the rear portion of the sleeve and the main portion of the tubular body occurs as the sleeve is moved forwardly.
In the illustrative embodiment, the sleeve retaining member comprises an outwardly extending ring carried by the tubular body. The rear portion of the sleeve has a smaller internal diameter than the external diameter of the outwardly extending ring so that the outwardly extending ring prevents forward movement of t~e rear portion of the sleeve past a predeter~lined point.
r~
SUMMARY OF THE INVENTION 1~278~
The invention according to -this divisional application provides a luer lock connection device which comprises: a male luer connec-tor comprising a tubular body defining a bore with the front end thereof adapted for in-sertion into a female luer connector and the rear end there-of adapted for coupling to tubing; the tu~ular body having a front portion contiguous with the front end and a main portion tha-t is separated from the front portion by a sleeve-retaining member; a sleeve having a rear portion that is slidable along the 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.
~2~86 In the illus~.rative embodiment, ~he rear portionof the sleeve defines a pal.r of opposed slots to render the sleeve's rear portion significantly.resilient. The tubular body carries a pair of outwardly extending flanges rearward of the main portion, with the flanges and slots being cooperative to prevent relative rotation of the sleeve and tubular body when the flanges are within the slots.
A more detailed explanation of the invention is provided in the following descrip-tion and claims, and is illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a perspective view o~ a luer lock ,.
connection device constructed in accordance with the principles of the present invention;
FIGURE 2 is a cross-sectional elevation of the male luer connector of the device of Figure l; and . FIGUP~ 3 is an enlarged cross-secti.onal elevation of the sleeve carried by the male luer connector of Figures 1 and 2 and its connection to the female luer connector.
DET~ILED DESCRIPTION OF THE
ILLUSTRATIVE EMBODI~ENT
Referring to ~he figures, a luer lock connection device is shown therein comprising a male luer connector .
2 ~
10 and a female luer connector 12. Fe~ale luer connector 12 is of the type in which the main body 14 deines a bore 16 and a flange 18 surro~mds bore 16 and extends radially from main body 14. The length of flange 18 is such that it threadedly cooperates with the internal threads o~ a sleeve 20 carried by male luer connector 10. Plastic tubing 22 is fastened to main body 14 by pressure and solvent sealing as is well-known in the art.
.. Male luer connector 10 has a tubular body 24 which defines a bore 26 and comprises a front portion 28 con~
tiguous with front end 30 which is adapted for insertion : into bore 16 of female luer connector 12. The external surface o~ front portion 28 is dimensioned so as to provide a snug pressure fit within bore 16.
Tubular body 24 also includes a main portion 32 that is separated rom front portion 28 by a sleeve-retaining member 34. In the illustrative embodiment, sleeve-retaining me~ber 34 comprises an outwardly extendin~ ring carried by tubular body 24.
. The rear end 36 of tubular body 24 is coupled to plastic tubing with a pressure fit and with solven~
bonding. A pair of opposed flanges 38, 3~ extend outwardly from tubular body 24 adjacent rear end 36 for cooperation with slots 40 defin~d by sleeve 20 as discussed below.
Sleeve 20 has a front portion 42 that is internally threaded for threaded cooperation with flange 18, and a ~2~
rear portion ~ that has a smaller intern~] diameter than the external diameter of ring 3~. ~hus, ring 3~ serves to prevent sleeve 20 from moving forward past the position illustrated in Figure 2.
, ~ear portion 4~ has a rear end portion ~6 with an inner surface ~8 thak forms a wiper seal against the surface of main portion 32. Main portion 32 is tapered outwardly in the forward direction so that as sleeve 20 moves forwardly, there will be increased compression between 1nner surface 48 Lmd the surface of main portion 32.
- The increased compression ensuxes that sleeve 20 will not engage flange 18 until front portion 28 is first inserted into bore 1~ oE female luer,connector 12. In cer-tain prior art luer locks, the coupling of the locking sleeve to the female connector may occur notwithstanding the lack ' of a secure fluid-tight connection between the male luer and the female luer. Any leakage may cause air embolism. By utilizing an increa,sing compressive resistance in,the present invention, the operator is forc~d to close -the male luer-female luer connection securely before the sleeve 20 canthreadedly engage flange 18.
, , As stated above, rear portion ~ of sleeve 20 de-.;
fines slots ~0 which, as illustrated most clearly in Figures 1 and 3, have their widest portion at the rear end 46 of the rear portion 4~ and taper inwaraly forwardly. These gener-ally V-shaped slots aid in giving the sleeve the proper resil-ience for move~ent along main portion 32. In addition, when sleeve 20 is unscrewed from flange 18, flanges 38 and 39 will catch within sloks ~0 and relative rota-tion between sleeve 20 and tubular body 2~ will be prevented. Preven~ion of such relative rotation is slgni~icank because otherwisc it would be extremely difficult to remove male luer connector 10 from 2~86 female luer connec-tor 12 once the luer connectors are coupled together.
~ t is des;.r~b ~ tha-t the luer lock connection device be formed in a plastic mo:L~!ed cons-truc-t;.on. Sleeve 20 may carry a pair of wings for er,ablin~ grasping by the operator for easy insertion and removal oE the male luer connector 10 from the female luer connector 12.
. It can be seen that inner surface 48 forms a wiper seal or a ring seal which is compressed by the ~orward move-ment o,f sleeve 20 along main body portion 32. The seal formed by inner surface 48 is mated to sleeve 20 so that the sleeve is self-centering.
Although an i,llustrat-~ve embodiment of .the invention has been shown and described, it is to be understood that various modificatlons and substitu-tions may,be made by those skilled in the art without departing from the novel spirit and ! scope of the invention.
10 and a female luer connector 12. Fe~ale luer connector 12 is of the type in which the main body 14 deines a bore 16 and a flange 18 surro~mds bore 16 and extends radially from main body 14. The length of flange 18 is such that it threadedly cooperates with the internal threads o~ a sleeve 20 carried by male luer connector 10. Plastic tubing 22 is fastened to main body 14 by pressure and solvent sealing as is well-known in the art.
.. Male luer connector 10 has a tubular body 24 which defines a bore 26 and comprises a front portion 28 con~
tiguous with front end 30 which is adapted for insertion : into bore 16 of female luer connector 12. The external surface o~ front portion 28 is dimensioned so as to provide a snug pressure fit within bore 16.
Tubular body 24 also includes a main portion 32 that is separated rom front portion 28 by a sleeve-retaining member 34. In the illustrative embodiment, sleeve-retaining me~ber 34 comprises an outwardly extendin~ ring carried by tubular body 24.
. The rear end 36 of tubular body 24 is coupled to plastic tubing with a pressure fit and with solven~
bonding. A pair of opposed flanges 38, 3~ extend outwardly from tubular body 24 adjacent rear end 36 for cooperation with slots 40 defin~d by sleeve 20 as discussed below.
Sleeve 20 has a front portion 42 that is internally threaded for threaded cooperation with flange 18, and a ~2~
rear portion ~ that has a smaller intern~] diameter than the external diameter of ring 3~. ~hus, ring 3~ serves to prevent sleeve 20 from moving forward past the position illustrated in Figure 2.
, ~ear portion 4~ has a rear end portion ~6 with an inner surface ~8 thak forms a wiper seal against the surface of main portion 32. Main portion 32 is tapered outwardly in the forward direction so that as sleeve 20 moves forwardly, there will be increased compression between 1nner surface 48 Lmd the surface of main portion 32.
- The increased compression ensuxes that sleeve 20 will not engage flange 18 until front portion 28 is first inserted into bore 1~ oE female luer,connector 12. In cer-tain prior art luer locks, the coupling of the locking sleeve to the female connector may occur notwithstanding the lack ' of a secure fluid-tight connection between the male luer and the female luer. Any leakage may cause air embolism. By utilizing an increa,sing compressive resistance in,the present invention, the operator is forc~d to close -the male luer-female luer connection securely before the sleeve 20 canthreadedly engage flange 18.
, , As stated above, rear portion ~ of sleeve 20 de-.;
fines slots ~0 which, as illustrated most clearly in Figures 1 and 3, have their widest portion at the rear end 46 of the rear portion 4~ and taper inwaraly forwardly. These gener-ally V-shaped slots aid in giving the sleeve the proper resil-ience for move~ent along main portion 32. In addition, when sleeve 20 is unscrewed from flange 18, flanges 38 and 39 will catch within sloks ~0 and relative rota-tion between sleeve 20 and tubular body 2~ will be prevented. Preven~ion of such relative rotation is slgni~icank because otherwisc it would be extremely difficult to remove male luer connector 10 from 2~86 female luer connec-tor 12 once the luer connectors are coupled together.
~ t is des;.r~b ~ tha-t the luer lock connection device be formed in a plastic mo:L~!ed cons-truc-t;.on. Sleeve 20 may carry a pair of wings for er,ablin~ grasping by the operator for easy insertion and removal oE the male luer connector 10 from the female luer connector 12.
. It can be seen that inner surface 48 forms a wiper seal or a ring seal which is compressed by the ~orward move-ment o,f sleeve 20 along main body portion 32. The seal formed by inner surface 48 is mated to sleeve 20 so that the sleeve is self-centering.
Although an i,llustrat-~ve embodiment of .the invention has been shown and described, it is to be understood that various modificatlons and substitu-tions may,be made by those skilled in the art without departing from the novel spirit and ! scope of the invention.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A luer lock connection device which comprises:
a male luer connector comprising a tubular body defining a bore with the front end thereof adapted for in-sertion into a female luer connector and the rear end thereof adapted for coupling to tubing;
said tubular body having a front portion con-tiguous with front end and a main portion that is separated from said front portion by a sleeve-retaining member;
a sleeve having a rear portion that is slidable 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.
a male luer connector comprising a tubular body defining a bore with the front end thereof adapted for in-sertion into a female luer connector and the rear end thereof adapted for coupling to tubing;
said tubular body having a front portion con-tiguous with front end and a main portion that is separated from said front portion by a sleeve-retaining member;
a sleeve having a rear portion that is slidable 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.
2. A luer lock connection device as described in claim 1, 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.
3. A luer lock connection device as described in claim 1, said slot having its widest portion at the rear end of said rear portion and tapering inwardly forwardly.
4. A luer lock connection device which comprises:
a male luer connector comprising a tubular body defining a bore with a front end thereof adpated for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing:
said tubular body having a front portion con-tiguous 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 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;
the rear portion of the sleeve having a smaller internal diameter than the external diameter of said re-taining 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 ex-tending 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.
a male luer connector comprising a tubular body defining a bore with a front end thereof adpated for insertion into a female luer connector and the rear end thereof adapted for coupling to tubing:
said tubular body having a front portion con-tiguous 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 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;
the rear portion of the sleeve having a smaller internal diameter than the external diameter of said re-taining 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 ex-tending 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000401096A CA1222786A (en) | 1979-06-04 | 1982-04-15 | Luer lock |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4494379A | 1979-06-04 | 1979-06-04 | |
| US044,943 | 1979-06-04 | ||
| CA351,240A CA1133966A (en) | 1979-06-04 | 1980-05-05 | Luer lock |
| CA000401096A CA1222786A (en) | 1979-06-04 | 1982-04-15 | Luer lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1222786A true CA1222786A (en) | 1987-06-09 |
Family
ID=25669074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000401096A Expired CA1222786A (en) | 1979-06-04 | 1982-04-15 | Luer lock |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1222786A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932398A (en) * | 1988-12-23 | 1990-06-12 | Dentsply Limited | Anaesthetic vaporizer interlock system and connector for anaesthetic apparatus |
-
1982
- 1982-04-15 CA CA000401096A patent/CA1222786A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932398A (en) * | 1988-12-23 | 1990-06-12 | Dentsply Limited | Anaesthetic vaporizer interlock system and connector for anaesthetic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |