CA1099171A - Adapter assembly - Google Patents
Adapter assemblyInfo
- Publication number
- CA1099171A CA1099171A CA304,136A CA304136A CA1099171A CA 1099171 A CA1099171 A CA 1099171A CA 304136 A CA304136 A CA 304136A CA 1099171 A CA1099171 A CA 1099171A
- Authority
- CA
- Canada
- Prior art keywords
- body member
- plug
- catheter
- nipple
- bore
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0014—Connecting a tube to a hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1077—Adapters, e.g. couplings adapting a connector to one or several other connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/346—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
Abstract
ADAPTER ASSEMBLY
ABSTRACT OF THE DISCLOSURE
An adapter assembly comprising, a syringe having a tip, a catheter, and a connector having a body member, a compressible plug, and a compression member. The body member has a bore to receive the plug, and an opening communicating with the bore.
The plug has a channel to receive the catheter through the body member opening into the plug channel. The compression member has a nipple receivable in a proximal end of the body member bore, and a proximal port to receive the syringe tip. The com-pression member may be releasably attached to the body member in such a manner that the nipple bears against the plug and secures the catheter in the plug channel, while the syringe may be attached to the compression member with the syringe tip received in the compression member port.
ABSTRACT OF THE DISCLOSURE
An adapter assembly comprising, a syringe having a tip, a catheter, and a connector having a body member, a compressible plug, and a compression member. The body member has a bore to receive the plug, and an opening communicating with the bore.
The plug has a channel to receive the catheter through the body member opening into the plug channel. The compression member has a nipple receivable in a proximal end of the body member bore, and a proximal port to receive the syringe tip. The com-pression member may be releasably attached to the body member in such a manner that the nipple bears against the plug and secures the catheter in the plug channel, while the syringe may be attached to the compression member with the syringe tip received in the compression member port.
Description
7~
BACKGROUND OF THE INVENT:[ON
... . _ _ .
The present invention relates to adapter assemblies.
During certain medical procedures, for example a con-tinuous epidural or caudal spinal anesthesia procedure, it is necessary to connect a syringe to an end of a catheter. In a continuous epidural anesthesia procedure, a needle is positioned in a patient's body with an opening at one end of the needle posi-tioned in the epidural space of the patient and with the other end of the needle extending outside the patient's body. A cathe-ter of relatively small diameter is threaded through the needle and the needle opening until a distal end of the catheter is located in the epidural space, while a proximal end of the cathe-ter extends outside the patient's body. The needle is removed from the patient's body and from the catheter to prevent obstruc-tion if the operation takes place with the patient lying on his back and to prevent the needle from cutting the catheter during the operation. After removal of the needle, an anesthetic solu-tion is injected through the catheter into the epidural space by a syringe which is connected to the proximal end of the catheter.
Accordingly, a connector or adapter must be provided for connecting the syringe to the proximal end of the catheter.
The adapter should be positionable on the catheter after removal of the needle from the catheter, since the adapter would other-wise prevent removal of the needle from the catheter. It is also desirable that the adapter should permit easy placement on the catheter to expedite the procedure.
After the syringe has been connected to the adapter, the anesthetic solution is injected through the catheter into the epidural space. A relatively large amount of the solution is ini-tially required for epidural anesthesia, with additional amounts -1- ~
L7~
of the solution being periodically injected during surgery. It is preferred that the syringe be removed from the adapter between injections, since if the syringe remains connected to the adapter and if the syringe inadvertently falls from the bed or other structure on which it is placed, the weight of the connected syr-inge may pull the catheter from the patient's body, necessitating repositioning of the catheter into the epidural space during sur-gery if further anesthesia is required.
SUMMARY OF THE INVENTION
A principal feature of the present invention is the provision of a connector of simplified construction which facili-tates attachment to the tip of a syringe and a catheter.
The connector comprises, a body member having an elon-gated bore and an opening adjacent a distal end portion of the body member communicating with the bore. The connector has an elongated plug of elastic material received in the bore in a rela-tively uncompressed condition of the plug. The plug has a channel extending through the plug with the channel aligned with the body member opening and with the internal dimensions of the channel being slightly larger than the outer dimensions of the catheter.
The connector has a compression member having a nipple adjacent a distal end of the compression member and receivable in a proximal end portion of the body member. The compression member has a port adjacent a proximal end portion of the compression member to receive the syringe tip, and a passageway communicating between the port and the distal end of the nipple, with a distal portion of the passageway being aligned with the plug channel when the nipple is received in the body member bore. The connector has means for releasably attaching the compression member to the body member with the nipple received in the bore, and for con-trolling the distance the nipple projects into the bore.
A feature of the present invention is that the cathatermay be readily inserted through the body member opening and into the plug channel while the plug is in its relatively uncompressed condition.
Another feature of the invention is that the compres-sion member may be attached to the body member such that communi-cation is established between the syringe port and the plug chan-nel.
Still another feature of the invention i8 that the dis-tance which the compression member nipple extends into the body member bore may be controlled such that the nipple bears upon the plug and releasably locks the catheter in the plug channel.
Yet another feature of the invention is that the syr-inge may be releasably attached to a proximal end portion of thecompression member with the syringe tip received in the compres-sion member port.
Thus, a feature of the present invention is that the catheter may be readily secured in the connector, and the syringe may be attached to the connector in order to pump liquid through the connector into the catheter.
A further feature of the invention is the provision of a gripping element on the compression member which overlies a proximal end portion of the body member in order to facilitate removal of the syringe from the connector without releasing the catheter from the compressed plug.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
7~
DESCRIPTION OF THE DRAWINGS
_ _ _ In the drawings:
Fig. 1 is a fragmentary elevational view of an adapter assembly of the present invention having a connector, a catheter, and a syringe;
Fig. 2 is an exploded elevational view of the connec-tor of Fig. l;
Fig. 3 is an exploded sectional view of the connector of Fig. 2;
Fig. 4 is an end view of a compression member taken substantially as indicated alony the line 4-4 of Fig. 3;
Fig. 5 is a sectional view of the connector with the catheter received in a compressible plug of the connector;
Fig. 6 is a fragmentary elevational view, taken partly in section, showing the catheter locked in the connector and the syringe attached to the connector; and Figs. 7 and 8 are diagrammatic views of a patient's body illustrating steps during placement o~ a catheter in the epidural space of the patient.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Re~erring now to Figs. 1-4, there is shown an adapter assembly generally designated 10 comprising a syringe 12, a con-nector 14, and an elongated relatively thin catheter 16 having a lumen 18. The syringe 12 has a tip 20 communicating with a chamber in a syringe barrel 22, and a luer fitment 24 for releas-able attachment of the syringe to the connector 14.
The connector 14 has a body member 26 having an elon-gated bore 28, an opening 30 at a dis-tal end 32 of the body mem-ber 26, a pair of opposed outwardly directed wings 34 adjacent the distal end 32 of the body member 26, and internal threads 36 at the proximal end 38 of the body member 26. The connector 14 also has an elongated plug 40 of elastic material having a chan-nel 42 extending longitudinally through the plug 40, with the inner dimensions of the plug channel 42 being slightly larger than the outer dimensions of -the catheter 16 when the plug 40 is in a relatively uncompressed condition. As shown, both the plug 40 and the body member bore 28 have associated distal conical sections and proximate cylindrical sections, such that the plug 40 may be received in a distal end portion 44 of the body member bore 28 in a relatively uncompressed condition of the plug 40, with the plug channel 42 being aligned with the body member open-ing 30, and with the distal end of the plug channel 42 and the body member opening 30 defining a distal taper to facilitate placement of the catheter in the plug channel 42.
The connector 14 also has a compression member 46 hav-ing a nipple 48 at a distal end 50 of the compression member 46.
The compression member 46 also has an outwardly directed luer flange 52 at a proximal end 54 of the compression member 46, and a tapered port 56 to receive the tapered syringe tip 20, such that the syringe 12 may be releasably locked to the connector 14 through cooperation of the luer fitment 24 and the luer flange 52 with the syringe tip 20 being received in the connector port 56. The compression member 46 has a passageway 58 communicating between the port 56 and an aperture 60 at the distal end 50 of the compression member nipple 48 which defines a distal ring 61 surrounding the aperture 60. The compression member 46 has a distally directed gripping element 62 which extends circumferen-tially around the nipple 48, with the gripping element 62 being connected to a mid-portion of the compression member 46 by a ~q~9~!L~'l flange 64, such that the gripping element 62 and compression nipple 48 define an annular cavity 66 for a purpose which will be described below. As shown, the nipple 48 has outer threads 68 which cooperate with the threads 36 of the body member 26.
The body member 26 and compression member 46 may be made of any suitable material, such as plastic. The plug 40 may be made of any suitable elastic material, such as rubber or Kraton, a trademark of Shell Oil Company.
The connector 14 is shown in an assembled configuration in Fig. 5. Thus, the plug 40 is received in the distal portion 44 of the body member bore 28 in a relatively uncompressed condi-tion of the plug, and the compression member 46 may be releasably attached to the body member 26 through cooperation of the body member threads 36 and the compression member threads 68, with the proximal end 38 of the body member 26 being received in the cav-ity 66 of the compression member 46 intermediate the gripping element 62 and the nipple 48, and with the distal portion of passageway 58 being aligned with the plug channel 42. In the configuration of Fig. 5, the distal end of the nipple 48 slightly contacts the proximal end of the plug 40, and a proximal end 70 of the catheter 16 may be readily inserted into the plug channel 42, since the plug 40 remains in a relatively uncompressed condi~
tion at this time. As previously noted, the distal taper of the plug channel 42 and the body member opening 30 facilitates guid-ance and placement of the catheter 16 into the plug channel 42.
With reference to Fig. 6, the compression member 46 may be further rotated relative the body member 26, such that the cooperating threads cause distal movement of the compression mem-ber nipple 48 in the body member bore 28. Thus, the distal ring 61 of the compression member nipple 48 bears upon the compressible ~)9917~
plug 40 in order to reduce the effective size of the plug chan-nel 42, causing the compressed plug to grip the catheter in the plug channel 42 and lock the catheter in the connector 14. In this configuration, the gripping element 62 overlies the proxi-mal end 38 of the body member 26, with the proximal end 38 of the body member 26 being received in the compression member cav ity 66. At this time, the syringe 12 may be attached to the proximal end of the compression member 46 in a manner as previ-ously described.
Thus, the catheter may be readily inserted into the plug channel 42 of the connector 14, and the catheter may be locked in place by relative rotation of the compression member 46 and body member 26. Next, the syringe 12 may be attached to the connector 14 in order to establish communication between the syringe tip and the catheter lumen. In this manner, the connec-tor 14 is attached to the catheter 16 in a simplified manner to permit ejection of fluid into the catheter lumen when it is desired to do so by attaching the syringe to the connector and by pumping the syringe. However, after an initial quantity of liquid has been ejectea from the syringe into the catheter lumen, it is preferred to remove the syringe from the connector. The physician may simultaneously grasp the gripping element 62 and an exposed portion of the body member 26 with the fingers of one hand, and the physician may then remove the syringe with the other hand. Thus, the gripping element 62 permits removal of the syringe 12 from the connector 14 while preventing rotation of the compression member 46 relative the body member 26 which otherwise might inadvertently release the catheter from the previously com-pressed plug 40.
The use of the connector for a continuous epidural 7~
spinal anesthesia procedure is described in connection with Figs.
7 and 8 as follows, although it will be understood that the assembly may be utilized for other suitable purposes, such as a continuous caudal spinal anesthesia procedure. With reference to Fig. 7, the tip T' of a ~ustead needle N is inserted through the skin S' of the patient until an opening O in the needle tip T' is located in the epidural space E. Next, a distal end 72 of the catheter 16 is threaded through the needle N and opening O
to position the distal end 72 of the catheter 16 in the epidural space E, as shown. The desired length of the catheter distal end 16 located in the epidural space E may be determined by suitable gradations spaced along the outer surface of the catheter. In this configuration, the catheter 16 extends outside the patient's body. The needle N is then removed from the patient's body and from the catheter 16 to prevent the needle from inadvertently cutting the catheter during surgery.
With reference to Fig. 8, after the needle has been removed from the catheter, the proximal end 70 of the catheter 16 is inserted into the connector 14 and locked in place, in a manner as previously described. Next, the syringe is attached to the connector 14 to pump a quantity of anesthetic solution from the syringe through the connector and catheter into the spidural space E. When the desired amount of anesthetic solu-tion has been injected into the epidural space, the syringe is removed from the connector 14.
Accordingly, the adapter assembly permits easy place-ment of the connector 14 on the proximal end 10 of the catheter 16. The syringe may be readily attached to the connector 14, such that communication is established between the syringe and the catheter 160 After the desired amount of solution has been 9~7~
injected into the epidural space, the syringe may be removed from the connector.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should S be understood therefrom, as modifications will be obvious to those skilled in the art.
BACKGROUND OF THE INVENT:[ON
... . _ _ .
The present invention relates to adapter assemblies.
During certain medical procedures, for example a con-tinuous epidural or caudal spinal anesthesia procedure, it is necessary to connect a syringe to an end of a catheter. In a continuous epidural anesthesia procedure, a needle is positioned in a patient's body with an opening at one end of the needle posi-tioned in the epidural space of the patient and with the other end of the needle extending outside the patient's body. A cathe-ter of relatively small diameter is threaded through the needle and the needle opening until a distal end of the catheter is located in the epidural space, while a proximal end of the cathe-ter extends outside the patient's body. The needle is removed from the patient's body and from the catheter to prevent obstruc-tion if the operation takes place with the patient lying on his back and to prevent the needle from cutting the catheter during the operation. After removal of the needle, an anesthetic solu-tion is injected through the catheter into the epidural space by a syringe which is connected to the proximal end of the catheter.
Accordingly, a connector or adapter must be provided for connecting the syringe to the proximal end of the catheter.
The adapter should be positionable on the catheter after removal of the needle from the catheter, since the adapter would other-wise prevent removal of the needle from the catheter. It is also desirable that the adapter should permit easy placement on the catheter to expedite the procedure.
After the syringe has been connected to the adapter, the anesthetic solution is injected through the catheter into the epidural space. A relatively large amount of the solution is ini-tially required for epidural anesthesia, with additional amounts -1- ~
L7~
of the solution being periodically injected during surgery. It is preferred that the syringe be removed from the adapter between injections, since if the syringe remains connected to the adapter and if the syringe inadvertently falls from the bed or other structure on which it is placed, the weight of the connected syr-inge may pull the catheter from the patient's body, necessitating repositioning of the catheter into the epidural space during sur-gery if further anesthesia is required.
SUMMARY OF THE INVENTION
A principal feature of the present invention is the provision of a connector of simplified construction which facili-tates attachment to the tip of a syringe and a catheter.
The connector comprises, a body member having an elon-gated bore and an opening adjacent a distal end portion of the body member communicating with the bore. The connector has an elongated plug of elastic material received in the bore in a rela-tively uncompressed condition of the plug. The plug has a channel extending through the plug with the channel aligned with the body member opening and with the internal dimensions of the channel being slightly larger than the outer dimensions of the catheter.
The connector has a compression member having a nipple adjacent a distal end of the compression member and receivable in a proximal end portion of the body member. The compression member has a port adjacent a proximal end portion of the compression member to receive the syringe tip, and a passageway communicating between the port and the distal end of the nipple, with a distal portion of the passageway being aligned with the plug channel when the nipple is received in the body member bore. The connector has means for releasably attaching the compression member to the body member with the nipple received in the bore, and for con-trolling the distance the nipple projects into the bore.
A feature of the present invention is that the cathatermay be readily inserted through the body member opening and into the plug channel while the plug is in its relatively uncompressed condition.
Another feature of the invention is that the compres-sion member may be attached to the body member such that communi-cation is established between the syringe port and the plug chan-nel.
Still another feature of the invention i8 that the dis-tance which the compression member nipple extends into the body member bore may be controlled such that the nipple bears upon the plug and releasably locks the catheter in the plug channel.
Yet another feature of the invention is that the syr-inge may be releasably attached to a proximal end portion of thecompression member with the syringe tip received in the compres-sion member port.
Thus, a feature of the present invention is that the catheter may be readily secured in the connector, and the syringe may be attached to the connector in order to pump liquid through the connector into the catheter.
A further feature of the invention is the provision of a gripping element on the compression member which overlies a proximal end portion of the body member in order to facilitate removal of the syringe from the connector without releasing the catheter from the compressed plug.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
7~
DESCRIPTION OF THE DRAWINGS
_ _ _ In the drawings:
Fig. 1 is a fragmentary elevational view of an adapter assembly of the present invention having a connector, a catheter, and a syringe;
Fig. 2 is an exploded elevational view of the connec-tor of Fig. l;
Fig. 3 is an exploded sectional view of the connector of Fig. 2;
Fig. 4 is an end view of a compression member taken substantially as indicated alony the line 4-4 of Fig. 3;
Fig. 5 is a sectional view of the connector with the catheter received in a compressible plug of the connector;
Fig. 6 is a fragmentary elevational view, taken partly in section, showing the catheter locked in the connector and the syringe attached to the connector; and Figs. 7 and 8 are diagrammatic views of a patient's body illustrating steps during placement o~ a catheter in the epidural space of the patient.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Re~erring now to Figs. 1-4, there is shown an adapter assembly generally designated 10 comprising a syringe 12, a con-nector 14, and an elongated relatively thin catheter 16 having a lumen 18. The syringe 12 has a tip 20 communicating with a chamber in a syringe barrel 22, and a luer fitment 24 for releas-able attachment of the syringe to the connector 14.
The connector 14 has a body member 26 having an elon-gated bore 28, an opening 30 at a dis-tal end 32 of the body mem-ber 26, a pair of opposed outwardly directed wings 34 adjacent the distal end 32 of the body member 26, and internal threads 36 at the proximal end 38 of the body member 26. The connector 14 also has an elongated plug 40 of elastic material having a chan-nel 42 extending longitudinally through the plug 40, with the inner dimensions of the plug channel 42 being slightly larger than the outer dimensions of -the catheter 16 when the plug 40 is in a relatively uncompressed condition. As shown, both the plug 40 and the body member bore 28 have associated distal conical sections and proximate cylindrical sections, such that the plug 40 may be received in a distal end portion 44 of the body member bore 28 in a relatively uncompressed condition of the plug 40, with the plug channel 42 being aligned with the body member open-ing 30, and with the distal end of the plug channel 42 and the body member opening 30 defining a distal taper to facilitate placement of the catheter in the plug channel 42.
The connector 14 also has a compression member 46 hav-ing a nipple 48 at a distal end 50 of the compression member 46.
The compression member 46 also has an outwardly directed luer flange 52 at a proximal end 54 of the compression member 46, and a tapered port 56 to receive the tapered syringe tip 20, such that the syringe 12 may be releasably locked to the connector 14 through cooperation of the luer fitment 24 and the luer flange 52 with the syringe tip 20 being received in the connector port 56. The compression member 46 has a passageway 58 communicating between the port 56 and an aperture 60 at the distal end 50 of the compression member nipple 48 which defines a distal ring 61 surrounding the aperture 60. The compression member 46 has a distally directed gripping element 62 which extends circumferen-tially around the nipple 48, with the gripping element 62 being connected to a mid-portion of the compression member 46 by a ~q~9~!L~'l flange 64, such that the gripping element 62 and compression nipple 48 define an annular cavity 66 for a purpose which will be described below. As shown, the nipple 48 has outer threads 68 which cooperate with the threads 36 of the body member 26.
The body member 26 and compression member 46 may be made of any suitable material, such as plastic. The plug 40 may be made of any suitable elastic material, such as rubber or Kraton, a trademark of Shell Oil Company.
The connector 14 is shown in an assembled configuration in Fig. 5. Thus, the plug 40 is received in the distal portion 44 of the body member bore 28 in a relatively uncompressed condi-tion of the plug, and the compression member 46 may be releasably attached to the body member 26 through cooperation of the body member threads 36 and the compression member threads 68, with the proximal end 38 of the body member 26 being received in the cav-ity 66 of the compression member 46 intermediate the gripping element 62 and the nipple 48, and with the distal portion of passageway 58 being aligned with the plug channel 42. In the configuration of Fig. 5, the distal end of the nipple 48 slightly contacts the proximal end of the plug 40, and a proximal end 70 of the catheter 16 may be readily inserted into the plug channel 42, since the plug 40 remains in a relatively uncompressed condi~
tion at this time. As previously noted, the distal taper of the plug channel 42 and the body member opening 30 facilitates guid-ance and placement of the catheter 16 into the plug channel 42.
With reference to Fig. 6, the compression member 46 may be further rotated relative the body member 26, such that the cooperating threads cause distal movement of the compression mem-ber nipple 48 in the body member bore 28. Thus, the distal ring 61 of the compression member nipple 48 bears upon the compressible ~)9917~
plug 40 in order to reduce the effective size of the plug chan-nel 42, causing the compressed plug to grip the catheter in the plug channel 42 and lock the catheter in the connector 14. In this configuration, the gripping element 62 overlies the proxi-mal end 38 of the body member 26, with the proximal end 38 of the body member 26 being received in the compression member cav ity 66. At this time, the syringe 12 may be attached to the proximal end of the compression member 46 in a manner as previ-ously described.
Thus, the catheter may be readily inserted into the plug channel 42 of the connector 14, and the catheter may be locked in place by relative rotation of the compression member 46 and body member 26. Next, the syringe 12 may be attached to the connector 14 in order to establish communication between the syringe tip and the catheter lumen. In this manner, the connec-tor 14 is attached to the catheter 16 in a simplified manner to permit ejection of fluid into the catheter lumen when it is desired to do so by attaching the syringe to the connector and by pumping the syringe. However, after an initial quantity of liquid has been ejectea from the syringe into the catheter lumen, it is preferred to remove the syringe from the connector. The physician may simultaneously grasp the gripping element 62 and an exposed portion of the body member 26 with the fingers of one hand, and the physician may then remove the syringe with the other hand. Thus, the gripping element 62 permits removal of the syringe 12 from the connector 14 while preventing rotation of the compression member 46 relative the body member 26 which otherwise might inadvertently release the catheter from the previously com-pressed plug 40.
The use of the connector for a continuous epidural 7~
spinal anesthesia procedure is described in connection with Figs.
7 and 8 as follows, although it will be understood that the assembly may be utilized for other suitable purposes, such as a continuous caudal spinal anesthesia procedure. With reference to Fig. 7, the tip T' of a ~ustead needle N is inserted through the skin S' of the patient until an opening O in the needle tip T' is located in the epidural space E. Next, a distal end 72 of the catheter 16 is threaded through the needle N and opening O
to position the distal end 72 of the catheter 16 in the epidural space E, as shown. The desired length of the catheter distal end 16 located in the epidural space E may be determined by suitable gradations spaced along the outer surface of the catheter. In this configuration, the catheter 16 extends outside the patient's body. The needle N is then removed from the patient's body and from the catheter 16 to prevent the needle from inadvertently cutting the catheter during surgery.
With reference to Fig. 8, after the needle has been removed from the catheter, the proximal end 70 of the catheter 16 is inserted into the connector 14 and locked in place, in a manner as previously described. Next, the syringe is attached to the connector 14 to pump a quantity of anesthetic solution from the syringe through the connector and catheter into the spidural space E. When the desired amount of anesthetic solu-tion has been injected into the epidural space, the syringe is removed from the connector 14.
Accordingly, the adapter assembly permits easy place-ment of the connector 14 on the proximal end 10 of the catheter 16. The syringe may be readily attached to the connector 14, such that communication is established between the syringe and the catheter 160 After the desired amount of solution has been 9~7~
injected into the epidural space, the syringe may be removed from the connector.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should S be understood therefrom, as modifications will be obvious to those skilled in the art.
Claims (7)
1. An adapter assembly, comprising:
a syringe having a tip;
a catheter; and a connector comprising, a body member having an elongated bore and an opening adjacent a distal end portion of the body member communicating with said bore, an elongated plug of elastic material received in said bore in a relatively uncom-pressed condition of the plug, said plug having a channel extend-ing through the plug with a distal portion of the channel being aligned with the body member opening and with the internal dimen-sions of at least a distal portion of the channel being slightly larger than the outer dimensions of said catheter to receive the catheter through said body member opening, a compression member having a nipple adjacent a distal end of the compression member and receivable in a proximal end portion of the body member, said compression member having a port adjacent a proximal end portion of the compression member to receive the syringe tip, and a pass-ageway communicating between the port and the distal end of said nipple, with a distal portion of said passageway being aligned with the plug channel when the nipple is received in the body member bore, and means for releasably attaching the compression member to the body member with said nipple received in said bore, and for controlling the distance said nipple projects into said bore such that the nipple compresses said plug in the bore and releasably secures the catheter in said plug channel.
a syringe having a tip;
a catheter; and a connector comprising, a body member having an elongated bore and an opening adjacent a distal end portion of the body member communicating with said bore, an elongated plug of elastic material received in said bore in a relatively uncom-pressed condition of the plug, said plug having a channel extend-ing through the plug with a distal portion of the channel being aligned with the body member opening and with the internal dimen-sions of at least a distal portion of the channel being slightly larger than the outer dimensions of said catheter to receive the catheter through said body member opening, a compression member having a nipple adjacent a distal end of the compression member and receivable in a proximal end portion of the body member, said compression member having a port adjacent a proximal end portion of the compression member to receive the syringe tip, and a pass-ageway communicating between the port and the distal end of said nipple, with a distal portion of said passageway being aligned with the plug channel when the nipple is received in the body member bore, and means for releasably attaching the compression member to the body member with said nipple received in said bore, and for controlling the distance said nipple projects into said bore such that the nipple compresses said plug in the bore and releasably secures the catheter in said plug channel.
2. The assembly of claim 1 wherein the attaching and controlling means comprises cooperating threads on the inner sur-face of the body member proximal end portion and on the outer surface of said compression member nipple.
3. The assembly of claim 1 wherein said compression member includes a distal gripping element defining a space inter-mediate the gripping element and said nipple to receive the proximal end portion of the body member when the nipple is received in the body member bore.
4. The assembly of claim 3 wherein said gripping ele-ment extends circumferentially around said nipple and defines an annular cavity to receive the proximal end portion of said body member, and in which the compression member includes a flange connecting the gripping element to the compression member inter-mediate proximal and distal ends of the compression element.
5. The assembly of claim 1 wherein the body member includes a pair of opposed outwardly directed wings to facilitate manipulation of the body member.
6. The assembly of claim 1 including means for releas-ably attaching the syringe to said compression member with the syringe tip received in said port.
7. The assembly of claim 1 wherein said body member opening and a distal end portion of the plug channel define a distal taper to facilitate placement of the catheter in the plug channel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81655377A | 1977-07-18 | 1977-07-18 | |
| US816,553 | 1986-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099171A true CA1099171A (en) | 1981-04-14 |
Family
ID=25220943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA304,136A Expired CA1099171A (en) | 1977-07-18 | 1978-05-25 | Adapter assembly |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5421087A (en) |
| AU (1) | AU516567B2 (en) |
| BE (1) | BE869026A (en) |
| BR (1) | BR7803872A (en) |
| CA (1) | CA1099171A (en) |
| DE (1) | DE2831267A1 (en) |
| FR (1) | FR2397842A1 (en) |
| GB (1) | GB2000976B (en) |
| IT (1) | IT1107666B (en) |
| MX (1) | MX149235A (en) |
| NL (1) | NL7807375A (en) |
| NZ (1) | NZ187435A (en) |
| SE (1) | SE7806912L (en) |
| ZA (1) | ZA783181B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639019A (en) * | 1979-06-04 | 1987-01-27 | Baxter Travenol Laboratories, Inc. | Luer connection |
| FR2458734B1 (en) * | 1979-06-04 | 1985-06-07 | Baxter Travenol Lab | LOCKING CONNECTION DEVICE FOR PIPES |
| DE3102142A1 (en) * | 1981-01-23 | 1982-08-12 | B. Braun Melsungen Ag, 3508 Melsungen | Catheter adapter |
| DE3242238C2 (en) * | 1982-11-15 | 1985-02-14 | Peter Dr. März | Catheter coupling |
| DE8410069U1 (en) * | 1984-03-31 | 1984-06-28 | B. Braun Melsungen Ag, 3508 Melsungen | CONNECTING DEVICE |
| DE3518547C2 (en) | 1985-05-23 | 1994-04-14 | Angiomed Ag | Hollow needle of a biopsy set |
| CA1248832A (en) * | 1985-07-22 | 1989-01-17 | Francesco Peluso | Antibacterial closure system |
| GB8527646D0 (en) * | 1985-11-08 | 1985-12-11 | Cox J A | Devices for sampling drainage |
| DE3628337A1 (en) * | 1986-08-21 | 1988-02-25 | Braun Melsungen Ag | IMPLANTABLE CATHETER DEVICE |
| GB8627808D0 (en) * | 1986-11-20 | 1986-12-17 | Cox J A | Sampling liquids from human/animal body |
| DE3830653A1 (en) * | 1988-09-09 | 1990-03-22 | Braun Melsungen Ag | CUTLERY FOR THE INTRAPLEURAL REGIONALANAESTHESIA |
| DE29503750U1 (en) * | 1995-03-04 | 1995-04-27 | Braun Melsungen Ag | Fixing device |
| US5782505A (en) * | 1996-08-29 | 1998-07-21 | Becton, Dickinson And Company | Catheter adapter assembly |
| US9227047B2 (en) * | 2013-10-29 | 2016-01-05 | Avent, Inc. | Catheter connector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB162632A (en) * | 1920-09-09 | 1921-06-30 | Max Schem | Improvements in hypodermic syringes |
| BE426856A (en) * | 1937-04-14 | |||
| GB837661A (en) * | 1958-05-27 | 1960-06-15 | Edward Henderson | Hypodermic needle mount |
| FR2395037A1 (en) * | 1977-06-24 | 1979-01-19 | Peters Ligatures | Connector socket for intravenous catheter tube - has hollow metallic mandrel with deformable elastic central component fitting into conical holder to prevent accidental disconnection |
-
1978
- 1978-05-25 CA CA304,136A patent/CA1099171A/en not_active Expired
- 1978-05-31 NZ NZ187435A patent/NZ187435A/en unknown
- 1978-06-02 ZA ZA00783181A patent/ZA783181B/en unknown
- 1978-06-06 AU AU36843/78A patent/AU516567B2/en not_active Expired
- 1978-06-13 JP JP7045778A patent/JPS5421087A/en active Pending
- 1978-06-15 SE SE787806912A patent/SE7806912L/en unknown
- 1978-06-16 GB GB7827110A patent/GB2000976B/en not_active Expired
- 1978-06-19 BR BR7803872A patent/BR7803872A/en unknown
- 1978-07-06 IT IT50190/78A patent/IT1107666B/en active
- 1978-07-07 NL NL7807375A patent/NL7807375A/en not_active Application Discontinuation
- 1978-07-14 BE BE189312A patent/BE869026A/en not_active IP Right Cessation
- 1978-07-15 DE DE19782831267 patent/DE2831267A1/en not_active Withdrawn
- 1978-07-18 FR FR7821263A patent/FR2397842A1/en active Granted
- 1978-07-18 MX MX174226A patent/MX149235A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE7806912L (en) | 1979-01-19 |
| FR2397842A1 (en) | 1979-02-16 |
| AU516567B2 (en) | 1981-06-11 |
| GB2000976A (en) | 1979-01-24 |
| ZA783181B (en) | 1979-06-27 |
| GB2000976B (en) | 1982-01-13 |
| MX149235A (en) | 1983-09-28 |
| AU3684378A (en) | 1979-12-13 |
| IT1107666B (en) | 1985-11-25 |
| BR7803872A (en) | 1979-03-06 |
| DE2831267A1 (en) | 1979-02-08 |
| FR2397842B1 (en) | 1984-02-17 |
| NZ187435A (en) | 1981-04-24 |
| JPS5421087A (en) | 1979-02-16 |
| IT7850190A0 (en) | 1978-07-06 |
| BE869026A (en) | 1978-11-03 |
| NL7807375A (en) | 1979-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |