US20140094775A1 - Catheter/fistula needle to bloodline connection assurance device - Google Patents
Catheter/fistula needle to bloodline connection assurance device Download PDFInfo
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- US20140094775A1 US20140094775A1 US14/099,489 US201314099489A US2014094775A1 US 20140094775 A1 US20140094775 A1 US 20140094775A1 US 201314099489 A US201314099489 A US 201314099489A US 2014094775 A1 US2014094775 A1 US 2014094775A1
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- housing
- external
- connector
- assurance device
- internal
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Classifications
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- 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
- A61M39/16—Tube connectors; Tube couplings having provision for disinfection or sterilisation
- A61M39/162—Tube connectors; Tube couplings having provision for disinfection or sterilisation with antiseptic agent incorporated within the connector
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3655—Arterio-venous shunts or fistulae
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3656—Monitoring patency or flow at connection sites; Detecting disconnections
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3659—Cannulae pertaining to extracorporeal circulation
-
- 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
- A61M39/1011—Locking means for securing connection; Additional tamper safeties
Definitions
- the present disclosure relates to securing and strengthening a connection between an extension tube end of a catheter or fistula needle (device gaining access to a patient's vein) and a bloodline (running to a blood treatment machine).
- Catheters and fistula needles used with a blood treatment machine typically have two connectors, one for attachment to a venous bloodline and the other for attachment to an arterial bloodline; the venous and arterial bloodlines attached then being to the blood treatment machine. While the catheter and fistula needle connecters can be provided in a variety of shapes and sizes, the connectors are typically female luer connector.
- the distal end (with respect to the blood treatment machine) of each of the venous and arterial bloodlines includes a bloodline connector having a male luer, which connects to respective catheter or fistula needle connectors, or female luer connectors.
- a disconnection or failure of the connection of such bloodline connectors and catheter or fistula needle connectors while a patient is connected to a blood treatment machine for treatment can cause serious blood loss.
- tape The most commonly used method to date for securing a catheter or fistula needle to a bloodline for treatment is tape. Tape is wrapped around the connection and then secured to a patient's skin. However, many patients are irritated by the tape and will remove it from their skin, or will not even apply tape to the connection or their skin to begin with, placing them at risk of accidental disconnection. Accordingly, another need exists for the device is that it eliminates the need for tape.
- catheter and fistula needle connecters while typically being female luer connectors, are provided in a variety of shapes and sizes by a variety of manufacturers.
- a further need also exists for the device to be compatible with the variety of industry catheter and fistula needle connectors.
- a catheter fistula to bloodline connection assurance device which secures and strengthens a connection between an extension tube end of a catheter or fistula needle and a bloodline.
- the assurance device secures both catheter and fistula needle types of patient access.
- the present disclosure may only refer to one of either a catheter or fistula needle. It should be appreciated however that in such instances, the present disclosure refers to both a catheter and fistula needle unless specified otherwise.
- a first primary embodiment of the assurance device is configured to be compatible with any industrial catheter/fistula needle female luer connector and is specifically configured for use with a bloodline connector having locking clips that are biased slightly outwardly from the bloodline connector.
- the first embodiment of the assurance device is generally cylindrical and includes clamshell halves that open rotatably about at least one hinge.
- the first embodiment of the assurance device includes a barbed portion (the barbed end of the assurance device being the bloodline-to-machine end) and a luer housing portion (the luer end of the assurance device being the patient access end).
- Each of the barbed and luer portions includes a closing clip positioned at the open outer or non-hinged side of the respective clamshell halves.
- Each closing clip includes a male element and a female element, which lock together to hold the assurance device closed when closed about the mated bloodline and patient access luer connectors.
- a user opens the Assurance Device by manually disengaging the male elements from their respective female elements.
- the catheter/fistula needle or patient access end of the first embodiment of the assurance device defines an opening that accommodates an extension tube of any suitable industrial catheter or fistula needle.
- the bloodline end of the assurance device is left open, such that in one implementation, there is no end wall or surface extending inwardly from the clamshell halves at the far bloodline end. The open end accommodates the bloodline connector locking clips.
- Each of the assurance device embodiments is made of a suitable plastic, which does not need to be approved for contact with medical fluids.
- a more rigid polymer, such as polycarbonate may be desirable.
- the first embodiment of the assurance device makes use of the locking clips on the bloodline connector.
- the interior wall of the barbed portion of the clamshell halves defines a plurality of barbs that are configured to engage with the distal or moveable ends of the locking clips.
- Each locking clip is biased slightly outwardly to fit between two respective barbs.
- the barbs are spaced as close together as possible to prevent any axial movement of the bloodline connector when the assurance device is engaged about the mated connectors.
- the interior wall of the luer housing portion does not define barbs and instead has a diameter that is large enough to house any suitable industrial catheter/fistula needle female luer connector.
- the user After a user connects the catheter or fistula needle to the bloodline, the user places the connected catheter connector and bloodline connector into the assurance device, which when closed, locks the barbs onto the slightly outwardly biased locking clips of the bloodline connector. The locking prevents axial movement of the bloodline connector relative to the Assurance Device.
- a connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can includes a cylindrical housing defined by a first half rotatably connected to a second half, the cylindrical housing having a first portion, an inside wall of the first portion defining a plurality of barbs configured to engage with a distal end of a clip which is biased outwardly from the bloodline connector, to prevent axial movement of the bloodline connector relative to the connection assurance device when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector, and a second portion, the second portion configured to accommodate the patient-end connector; and at least one closing mechanism for releasably securing the first half of the cylindrical housing to the second half of the cylindrical housing.
- the patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle.
- the at least one closing mechanism can include a clip having a male element and a female element.
- the distal end of the clip is engaged between two of the plurality of barbs.
- the two clips can be biased outwardly from the bloodline connector and engage with the plurality of barbs.
- the patient end connector includes a female luer receiver and the bloodline connector includes a male luer.
- luer portion can be configured to accommodate a plurality of shapes of patient-end connectors when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector.
- a second primary embodiment of the Assurance Device is also configured to be compatible with any suitable industrial catheter/fistula needle connector.
- the second embodiment includes internal and external clamshells. Internal clamshell halves (could be hinged) pressure seal to the bloodline connector, and form outwardly extending barbs.
- the external clamshell opens rotatably about at least one hinge and includes inwardly facing threads that catch the outer barbs of the internal clamshell.
- the outer clamshell also defines a housing that accommodates any industrial catheter/fistula connector.
- the external clamshell includes a closing clip similar to the closing clip of the first embodiment of the assurance device.
- the catheter/fistula needle end of the external clamshell defines an opening that accommodates an extension tube of any industrial catheter or fistula needle.
- the bloodline end of the external clamshell is left open, just as in the first embodiment of the assurance device to accommodate a desired bloodline connector. It should be appreciated however that the second embodiment does not require the bloodline connector to have the locking clips as does the first embodiment.
- the user After a user connects the catheter or fistula needle to the bloodline, the user closes the internal clamshell about the bloodline connector. Then, the user closes the external clamshell about the internal clamshell, causing the inwardly facing barbs of the external clamshell to engage the outwardly facing barbs of the internal clamshell. Such engagement prevents axial movement of the bloodline connector (engaged by the internal clamshell halves) relative to the external clamshell.
- a connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can comprise an external cylindrical housing defined by a first half rotatably connected to a second half, an inner wall of the external cylindrical housing including a plurality of inwardly extending barbs; an internal cylindrical housing defined by a first half and a second half each configured to engage about the bloodline connector, an outer wall of the internal cylindrical housing including a plurality of outwardly extending threads configured to engage with the plurality of inwardly extending barbs of the external cylindrical housing when the external cylindrical housing is engaged about the internal cylindrical housing; and at least one closing mechanism for releasably securing the first half of the external cylindrical housing to the second half of the external cylindrical housing.
- the patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle.
- the at least one closing mechanism can include a clip having a male element and a female element.
- An inner wall of the internal cylindrical housing can define a cavity configured to engage an outwardly extending portion of the bloodline connector.
- the patient end connector includes a female luer receiver and the bloodline connector includes a male luer.
- the connection assurance is again compatible with a plurality of shapes of patient-end connectors.
- the first half of the internal cylindrical housing is rotatably connected to the second half of the internal cylindrical housing.
- a third primary embodiment of the assurance device is also configured to be compatible with any suitable industrial catheter/fistula needle connector.
- the third embodiment of the assurance device includes a clamshell having two halves that open rotatably about at least one hinge.
- the assurance device includes a male luer portion that pressure seals to the male luer portion of the bloodline connector.
- the bloodline male luer portion of the device extends to a female luer portion, which is lined with a compressible material that conforms around any industrial catheter/fistula needle connector when the assurance device is closed about the mated connectors.
- the third embodiment of the assurance device includes closing clips similar to those in the first and second embodiments.
- the catheter end of the third embodiment of the assurance device defines an opening that accommodates any industrial catheter or fistula female luer connector.
- the bloodline end defines an opening that accommodates the bloodline connector, which as with the second embodiment may or may not include locking clips.
- the user After a user connects the catheter to the bloodline, the user positions the male luer portion of the third embodiment of the assurance device into engagement with the male luer of the bloodline connector. Once the assurance device is closed, this prevents axial movement of the bloodline connector relative to the assurance device.
- the female luer is accordingly positioned along the compressible material in the female luer portion of the third embodiment of the assurance device, causing the compressible material to conform about the female luer when the assurance device is closed about the mated connectors, and preventing both axial and rotational movement of the female luer connector relative to the assurance device.
- the third primary embodiment of the connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can include a cylindrical housing defined by a first half rotatably connected to a second half, the cylindrical housing having: a first portion defined by the cylindrical housing, the first portion configured to engage the bloodline connector when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector, and a second portion defined by the cylindrical housing, the second portion including a compressible material extending inward from an inner wall of the lower portion, the compressible material configured to conform about the patient-end connector when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector; and at least one closing mechanism for releasably securing the first half of the cylindrical housing to the second half of the cylindrical housing.
- the patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle.
- the at least one closing mechanism can include a clip having a male element and a female element.
- the compressible material can be a sponge-like material, and memory foam or be configured to absorb a fluid.
- An inner wall of the first portion can define a cavity configured to engage an outwardly extending portion of the bloodline connector.
- the second portion can be configured to accommodate a plurality of shapes of patient-end connectors when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector.
- FIG. 1 is a perspective view of a distal end (with respect to a blood treatment machine) of a bloodline having a bloodline connector including a male luer, and the extension tubes of a catheter or fistula needle, each of the extension tubes including a female luer connector.
- FIG. 2 is a perspective view of a first embodiment of the assurance device.
- FIG. 3 is an exploded perspective view of the first embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector.
- FIG. 4 is a perspective view of the first embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector.
- FIG. 5 is an exploded perspective view of a second embodiment of the assurance device.
- FIG. 6 is an exploded perspective view of the second embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector.
- FIG. 7 is a perspective view of the second embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector.
- FIG. 8 is an exploded perspective view of a third embodiment of the assurance device.
- FIG. 9 is an exploded perspective view of the third embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector.
- FIG. 10 is a perspective view of the third embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector.
- each embodiment of the assurance device discussed herein secures and strengthens a connection between an extension tube end of a catheter or fistula needle (device gaining access to a patient's vein) and a bloodline (running to a blood treatment machine).
- FIG. 1 shows an example of a catheter 2 having two connectors 4 , one for attachment to a venous bloodline and the other for attachment to an arterial bloodline. While the connecters 4 may be provided in a variety of shapes and sizes, each of connectors 4 is a female luer connector in one preferred embodiment.
- FIG. 1 also illustrates an example of a distal end (with respect to blood treatment machine) of a bloodline 6 and a bloodline connector 8 , which connects to catheter connector 4 , or female luer connector.
- the bloodline connector 8 accordingly includes a male luer 10 housed in an internally threaded cavity that engages with the female luer receiver 12 of the catheter connector 4 .
- the bloodline connector 8 in FIG. 1 includes two spring-like locking clips 14 that extend externally from the bloodline connector 8 .
- the locking clips 14 attach the distal end of the bloodline 6 to the machine (not shown) in certain instances, such as for priming and rinseback.
- device 20 which is compatible with any industrial suitable catheter/fistula needle female luer connector and is specifically configured for use with the bloodline connector 8 having spring-like locking clips 14 shown in FIG. 1 , or a similar bloodline connector.
- assurance device 20 is at least substantially cylindrical and includes clamshell halves 22 a and 22 b that open rotatably about hinges 24 a and 24 b. It should be appreciated that in various embodiments, the assurance device 20 may include a single hinge or multiple hinges. Halves 22 a and 22 b of the assurance device 20 may alternatively be free from each other.
- Assurance device 20 includes a barbed portion 26 and a luer housing portion 28 .
- Each of barbed portion 26 and luer portion 28 includes a closing clip 30 ( FIG. 4 ) positioned at the open outer or non-hinged side of the clamshell halves 22 a and 22 b.
- Each closing clip 30 includes a male element 32 a and a female element 32 b, which lock together to hold the assurance device 20 closed when the device is closed about the mated luer connectors 4 and 8 .
- a user opens the assurance device 20 by manually disengaging the male elements 32 a from their respective female elements 32 b.
- the assurance device 20 may include a single closing clip 30 or other desirable number of closing clips.
- Closing clip alternatively or additionally includes snap-fitting elements assurance devices could be held together using a loop and pile (Velcro) tape releasable fastener.
- the catheter end of the assurance device 20 defines an opening formed from opening portions 34 a and 34 b defined by respective the clamshell halves 22 a and 22 b.
- the opening 34 a / 34 b accommodates any industrial suitable catheter or fistula needle extension tube, such as those of catheter 2 in FIG. 1 .
- the bloodline end of the Assurance Device 20 is left open to accommodate the bloodline connector 8 , as seen in FIG. 4 .
- the first embodiment of the assurance device 20 makes use of the spring-like locking clips 14 of bloodline connector 8 .
- the interior wall of the barbed portion of the clamshell halves 22 a and 22 b defines a plurality of barbs 36 that are configured to engage with the distal or moveable ends 16 of the locking clips 14 .
- Each spring-like locking clip 14 is biased slightly outwardly to cause the distal or moveable ends 16 to fit between two respective barbs 36 .
- the barbs 36 are spaced as close together as possible to prevent any axial movement of the bloodline connector 8 when the assurance device 20 is engaged about the mated connectors 4 and 8 .
- the interior wall 38 of the luer housing portion 28 does not define barbs and has a diameter that is large enough to house any suitable industrial catheter/fistula needle connector, such as connector 4 illustrated in FIG. 1 .
- assurance device 120 a second primary embodiment of the assurance device is illustrated by assurance device 120 , which is configured to be compatible with any suitable industrial catheter/fistula needle connector and is specifically configured for use with the bloodline connector 8 or a similar bloodline connector.
- Assurance device 120 includes internal and external clamshells.
- Internal clamshell halves 123 a and 123 b pressure seal to bloodline connector 8 and form outwardly extending barbs 137 .
- internal clamshell halves 123 a and 123 b are hinged together and hingedly close about bloodline connector 8 .
- External clamshell halves 122 a and 122 b rotatably open about hinge 124 and include inwardly facing threads 136 that catch or lock onto outer barbs 137 of the inner clamshell halves 123 a and 123 b.
- the outer clamshell halves 122 a and 122 b also define a housing that accommodates any suitable industrial catheter/fistula connector.
- Assurance device 120 includes a closing clip 130 ( FIG. 7 ) positioned at the open outer or non-hinged side of the external clamshell halves 122 a and 122 b.
- Closing clip 130 includes a male element 132 a and a female element 132 b, which lock together to hold the assurance device 120 closed when closed about the mated luer connectors 4 and 8 .
- a user opens the assurance device 120 by manually disengaging the male element 132 a from the respective female element 132 b. Any alternatives discussed above for locking clip 30 is also applicable to closing clip 130 .
- the catheter end of the external clamshell defines an opening formed of opening portions 134 a and 134 b defined by respective clamshell halves 122 a and 122 b. Opening 134 a / 134 b accommodates tube extending off of any suitable industrial catheter or fistula needle, such as those of catheter 2 in FIG. 1 .
- the bloodline end of the external clamshell is left open to accommodate the bloodline connector 8 , as seen in FIGS. 6 and 7 .
- assurance device 220 a third primary embodiment of the assurance device is illustrated by assurance device 220 , which is compatible with any suitable industrial catheter/fistula needle connector and is specifically configured for use with the bloodline connector 8 or a similar bloodline connector.
- blood line connectors 8 may, but do not have to, include spring-line clips 14 discussed above for either assurance device 120 or 220 .
- assurance device 220 includes a clamshell having two halves 222 a and 222 b that open rotatably about hinge 224 .
- FIGS. 8 and 9 illustrate the clamshell halves 222 a and 222 b having one hinge 224 , the clamshell halves 222 a and 222 b may be attached by a single hinge or other desired number of hinges or may be separate pieces.
- Assurance device 220 includes a male luer portion 240 that pressure seals to bloodline connector 8 .
- Male luer portion 240 extends to a female luer housing portion 242 , which is lined with a compressible material 244 that conforms around any suitable industrial catheter/fistula needle connector when the assurance device 220 is closed about the mated connectors.
- Material 244 is in one embodiment a rubber, sponge rubber, or memory foam having a relatively high coefficient of friction. Silicone or neoprene may be suitable materials.
- Material 244 is adhered to female luer portion 242 in one embodiment.
- Material 244 e.g., if sponge-like, also provides the added benefit of absorbing fluid or blood in the event of luer disconnection. Frictional material 244 also prevents rotation of the catheter/fistula needle female luer connector 4 within device 220 and relative to the bloodline connector 8 .
- Each of the male luer portion 240 and female luer portion 242 includes a closing clip 230 positioned at the open outer or non-hinged side of the clamshell halves 222 a and 222 b.
- Each closing clip 230 includes a male element 232 a and a female element 232 b, which lock together to hold the assurance device 220 closed when closed about the mated luer connectors 4 and 8 .
- a user opens the assurance device 220 by manually disengaging the male elements 232 a from their respective female elements 232 b.
- Closing clip 230 includes any of the alternative embodiments discussed above for clip 30 .
- the catheter end of the clamshell defines an opening formed from opening portions 234 a and 234 b located on respective clamshell halves 222 a and 222 b. Opening 234 a / 234 b accommodates a tube exiting from any suitable industrial catheter or fistula needle, such as those of catheter 2 in FIG. 1 .
- the bloodline end of the assurance device 220 defines an opening formed from opening portions 235 a and 235 b located on respective clamshell halves 222 a and 222 b. Opening 235 a / 235 b accommodates bloodline connector 8 .
- the user positions the upper portion of the assurance device 220 in engagement with the bloodline connector 8 .
- the female luer connector 4 is accordingly positioned along the compressible material in the female luer portion 238 of the assurance device 220 , which causes compressible material 244 to squeeze to and conform about the female luer connector 4 when the assurance device 220 is closed about the mated connectors 4 and 8 .
- device 200 is advantageous in one respect because it confines female luer connector 4 movement both axially and rotationally.
Abstract
Description
- This application is a divisional of U.S. application Ser. No. 12/640,696, filed Dec. 17, 2009, which claims the benefit of U.S. Application Ser. No. 61/139,325, filed Dec. 19, 2008, the entire contents of each of which are hereby incorporated by reference and relied upon.
- The present disclosure relates to securing and strengthening a connection between an extension tube end of a catheter or fistula needle (device gaining access to a patient's vein) and a bloodline (running to a blood treatment machine).
- Catheters and fistula needles used with a blood treatment machine typically have two connectors, one for attachment to a venous bloodline and the other for attachment to an arterial bloodline; the venous and arterial bloodlines attached then being to the blood treatment machine. While the catheter and fistula needle connecters can be provided in a variety of shapes and sizes, the connectors are typically female luer connector. The distal end (with respect to the blood treatment machine) of each of the venous and arterial bloodlines includes a bloodline connector having a male luer, which connects to respective catheter or fistula needle connectors, or female luer connectors.
- A disconnection or failure of the connection of such bloodline connectors and catheter or fistula needle connectors while a patient is connected to a blood treatment machine for treatment can cause serious blood loss. A need therefore exists for a device that prevents the bloodlines from coming free from the catheter or fistula needle during treatment, for example, if tension is applied inadvertently to the bloodline.
- The most commonly used method to date for securing a catheter or fistula needle to a bloodline for treatment is tape. Tape is wrapped around the connection and then secured to a patient's skin. However, many patients are irritated by the tape and will remove it from their skin, or will not even apply tape to the connection or their skin to begin with, placing them at risk of accidental disconnection. Accordingly, another need exists for the device is that it eliminates the need for tape.
- As mentioned above, catheter and fistula needle connecters, while typically being female luer connectors, are provided in a variety of shapes and sizes by a variety of manufacturers. Thus, a further need also exists for the device to be compatible with the variety of industry catheter and fistula needle connectors.
- In general, multiple embodiments of a catheter fistula to bloodline connection assurance device (“assurance device”), which secures and strengthens a connection between an extension tube end of a catheter or fistula needle and a bloodline are provided herein. The assurance device secures both catheter and fistula needle types of patient access. For convenience, the present disclosure may only refer to one of either a catheter or fistula needle. It should be appreciated however that in such instances, the present disclosure refers to both a catheter and fistula needle unless specified otherwise.
- A first primary embodiment of the assurance device is configured to be compatible with any industrial catheter/fistula needle female luer connector and is specifically configured for use with a bloodline connector having locking clips that are biased slightly outwardly from the bloodline connector.
- The first embodiment of the assurance device is generally cylindrical and includes clamshell halves that open rotatably about at least one hinge. The first embodiment of the assurance device includes a barbed portion (the barbed end of the assurance device being the bloodline-to-machine end) and a luer housing portion (the luer end of the assurance device being the patient access end). Each of the barbed and luer portions includes a closing clip positioned at the open outer or non-hinged side of the respective clamshell halves. Each closing clip includes a male element and a female element, which lock together to hold the assurance device closed when closed about the mated bloodline and patient access luer connectors. A user opens the Assurance Device by manually disengaging the male elements from their respective female elements.
- The catheter/fistula needle or patient access end of the first embodiment of the assurance device defines an opening that accommodates an extension tube of any suitable industrial catheter or fistula needle. The bloodline end of the assurance device is left open, such that in one implementation, there is no end wall or surface extending inwardly from the clamshell halves at the far bloodline end. The open end accommodates the bloodline connector locking clips.
- Each of the assurance device embodiments is made of a suitable plastic, which does not need to be approved for contact with medical fluids. A more rigid polymer, such as polycarbonate may be desirable.
- The first embodiment of the assurance device makes use of the locking clips on the bloodline connector. The interior wall of the barbed portion of the clamshell halves defines a plurality of barbs that are configured to engage with the distal or moveable ends of the locking clips. Each locking clip is biased slightly outwardly to fit between two respective barbs. The barbs are spaced as close together as possible to prevent any axial movement of the bloodline connector when the assurance device is engaged about the mated connectors.
- The interior wall of the luer housing portion does not define barbs and instead has a diameter that is large enough to house any suitable industrial catheter/fistula needle female luer connector.
- After a user connects the catheter or fistula needle to the bloodline, the user places the connected catheter connector and bloodline connector into the assurance device, which when closed, locks the barbs onto the slightly outwardly biased locking clips of the bloodline connector. The locking prevents axial movement of the bloodline connector relative to the Assurance Device.
- Accordingly, in the first embodiment, a connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can includes a cylindrical housing defined by a first half rotatably connected to a second half, the cylindrical housing having a first portion, an inside wall of the first portion defining a plurality of barbs configured to engage with a distal end of a clip which is biased outwardly from the bloodline connector, to prevent axial movement of the bloodline connector relative to the connection assurance device when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector, and a second portion, the second portion configured to accommodate the patient-end connector; and at least one closing mechanism for releasably securing the first half of the cylindrical housing to the second half of the cylindrical housing.
- The patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle. The at least one closing mechanism can include a clip having a male element and a female element. In an embodiment, when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector, the distal end of the clip is engaged between two of the plurality of barbs. The two clips can be biased outwardly from the bloodline connector and engage with the plurality of barbs. In an embodiment, the patient end connector includes a female luer receiver and the bloodline connector includes a male luer. Further, luer portion can be configured to accommodate a plurality of shapes of patient-end connectors when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector.
- A second primary embodiment of the Assurance Device is also configured to be compatible with any suitable industrial catheter/fistula needle connector. The second embodiment includes internal and external clamshells. Internal clamshell halves (could be hinged) pressure seal to the bloodline connector, and form outwardly extending barbs.
- The external clamshell opens rotatably about at least one hinge and includes inwardly facing threads that catch the outer barbs of the internal clamshell. The outer clamshell also defines a housing that accommodates any industrial catheter/fistula connector. The external clamshell includes a closing clip similar to the closing clip of the first embodiment of the assurance device.
- The catheter/fistula needle end of the external clamshell defines an opening that accommodates an extension tube of any industrial catheter or fistula needle. The bloodline end of the external clamshell is left open, just as in the first embodiment of the assurance device to accommodate a desired bloodline connector. It should be appreciated however that the second embodiment does not require the bloodline connector to have the locking clips as does the first embodiment.
- After a user connects the catheter or fistula needle to the bloodline, the user closes the internal clamshell about the bloodline connector. Then, the user closes the external clamshell about the internal clamshell, causing the inwardly facing barbs of the external clamshell to engage the outwardly facing barbs of the internal clamshell. Such engagement prevents axial movement of the bloodline connector (engaged by the internal clamshell halves) relative to the external clamshell.
- Accordingly, in the second primary embodiment, a connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can comprise an external cylindrical housing defined by a first half rotatably connected to a second half, an inner wall of the external cylindrical housing including a plurality of inwardly extending barbs; an internal cylindrical housing defined by a first half and a second half each configured to engage about the bloodline connector, an outer wall of the internal cylindrical housing including a plurality of outwardly extending threads configured to engage with the plurality of inwardly extending barbs of the external cylindrical housing when the external cylindrical housing is engaged about the internal cylindrical housing; and at least one closing mechanism for releasably securing the first half of the external cylindrical housing to the second half of the external cylindrical housing.
- The patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle. The at least one closing mechanism can include a clip having a male element and a female element. An inner wall of the internal cylindrical housing can define a cavity configured to engage an outwardly extending portion of the bloodline connector. In an embodiment, the patient end connector includes a female luer receiver and the bloodline connector includes a male luer. The connection assurance is again compatible with a plurality of shapes of patient-end connectors. In an embodiment, the first half of the internal cylindrical housing is rotatably connected to the second half of the internal cylindrical housing.
- A third primary embodiment of the assurance device is also configured to be compatible with any suitable industrial catheter/fistula needle connector. The third embodiment of the assurance device includes a clamshell having two halves that open rotatably about at least one hinge. The assurance device includes a male luer portion that pressure seals to the male luer portion of the bloodline connector. The bloodline male luer portion of the device extends to a female luer portion, which is lined with a compressible material that conforms around any industrial catheter/fistula needle connector when the assurance device is closed about the mated connectors. The third embodiment of the assurance device includes closing clips similar to those in the first and second embodiments.
- The catheter end of the third embodiment of the assurance device defines an opening that accommodates any industrial catheter or fistula female luer connector. The bloodline end defines an opening that accommodates the bloodline connector, which as with the second embodiment may or may not include locking clips.
- After a user connects the catheter to the bloodline, the user positions the male luer portion of the third embodiment of the assurance device into engagement with the male luer of the bloodline connector. Once the assurance device is closed, this prevents axial movement of the bloodline connector relative to the assurance device. The female luer is accordingly positioned along the compressible material in the female luer portion of the third embodiment of the assurance device, causing the compressible material to conform about the female luer when the assurance device is closed about the mated connectors, and preventing both axial and rotational movement of the female luer connector relative to the assurance device.
- Accordingly, the third primary embodiment of the connection assurance device for securing a connection of a mated patient-end connector and bloodline connector can include a cylindrical housing defined by a first half rotatably connected to a second half, the cylindrical housing having: a first portion defined by the cylindrical housing, the first portion configured to engage the bloodline connector when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector, and a second portion defined by the cylindrical housing, the second portion including a compressible material extending inward from an inner wall of the lower portion, the compressible material configured to conform about the patient-end connector when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector; and at least one closing mechanism for releasably securing the first half of the cylindrical housing to the second half of the cylindrical housing.
- The patient-end connector can be a connector of an extension tube of a device selected from the group consisting of: a catheter and a fistula needle. The at least one closing mechanism can include a clip having a male element and a female element. The compressible material can be a sponge-like material, and memory foam or be configured to absorb a fluid. An inner wall of the first portion can define a cavity configured to engage an outwardly extending portion of the bloodline connector. The second portion can be configured to accommodate a plurality of shapes of patient-end connectors when the cylindrical housing is engaged about the mated patient-end connector and bloodline connector.
- It is accordingly an advantage of the present discloser to secure a machine tube to a patient access tube to increase safety during an extracorporeal treatment, which may be performed at home.
- Additional features and advantages are described herein, and will be apparent from the following Detailed Description and the figures.
-
FIG. 1 is a perspective view of a distal end (with respect to a blood treatment machine) of a bloodline having a bloodline connector including a male luer, and the extension tubes of a catheter or fistula needle, each of the extension tubes including a female luer connector. -
FIG. 2 is a perspective view of a first embodiment of the assurance device. -
FIG. 3 is an exploded perspective view of the first embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector. -
FIG. 4 is a perspective view of the first embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector. -
FIG. 5 is an exploded perspective view of a second embodiment of the assurance device. -
FIG. 6 is an exploded perspective view of the second embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector. -
FIG. 7 is a perspective view of the second embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector. -
FIG. 8 is an exploded perspective view of a third embodiment of the assurance device. -
FIG. 9 is an exploded perspective view of the third embodiment of the assurance device in relation to a mated bloodline connector and catheter or fistula needle connector. -
FIG. 10 is a perspective view of the third embodiment of the assurance device in a closed position about a mated bloodline connector and catheter or fistula needle connector. - Referring now to the drawings and in particular to
FIG. 1 , each embodiment of the assurance device discussed herein secures and strengthens a connection between an extension tube end of a catheter or fistula needle (device gaining access to a patient's vein) and a bloodline (running to a blood treatment machine).FIG. 1 shows an example of acatheter 2 having twoconnectors 4, one for attachment to a venous bloodline and the other for attachment to an arterial bloodline. While theconnecters 4 may be provided in a variety of shapes and sizes, each ofconnectors 4 is a female luer connector in one preferred embodiment. -
FIG. 1 also illustrates an example of a distal end (with respect to blood treatment machine) of abloodline 6 and abloodline connector 8, which connects tocatheter connector 4, or female luer connector. Thebloodline connector 8 accordingly includes amale luer 10 housed in an internally threaded cavity that engages with thefemale luer receiver 12 of thecatheter connector 4. Thebloodline connector 8 inFIG. 1 includes two spring-like locking clips 14 that extend externally from thebloodline connector 8. The locking clips 14 attach the distal end of thebloodline 6 to the machine (not shown) in certain instances, such as for priming and rinseback. - Referring now to
FIGS. 2 to 4 , a first primary embodiment of the assurance device is illustrated bydevice 20, which is compatible with any industrial suitable catheter/fistula needle female luer connector and is specifically configured for use with thebloodline connector 8 having spring-like locking clips 14 shown inFIG. 1 , or a similar bloodline connector. - Referring to
FIGS. 2 to 4 ,assurance device 20 is at least substantially cylindrical and includes clamshell halves 22 a and 22 b that open rotatably about hinges 24 a and 24 b. It should be appreciated that in various embodiments, theassurance device 20 may include a single hinge or multiple hinges.Halves assurance device 20 may alternatively be free from each other. -
Assurance device 20 includes abarbed portion 26 and aluer housing portion 28. Each ofbarbed portion 26 andluer portion 28 includes a closing clip 30 (FIG. 4 ) positioned at the open outer or non-hinged side of the clamshell halves 22 a and 22 b. Eachclosing clip 30 includes amale element 32 a and afemale element 32 b, which lock together to hold theassurance device 20 closed when the device is closed about the matedluer connectors assurance device 20 by manually disengaging themale elements 32 a from their respectivefemale elements 32 b. - It should be appreciated that in various embodiments, the
assurance device 20 may include asingle closing clip 30 or other desirable number of closing clips. Closing clip alternatively or additionally includes snap-fitting elements assurance devices could be held together using a loop and pile (Velcro) tape releasable fastener. - The catheter end of the
assurance device 20 defines an opening formed from openingportions catheter 2 inFIG. 1 . The bloodline end of theAssurance Device 20 is left open to accommodate thebloodline connector 8, as seen inFIG. 4 . - As seen best in
FIGS. 3 and 4 , the first embodiment of theassurance device 20 makes use of the spring-like locking clips 14 ofbloodline connector 8. The interior wall of the barbed portion of the clamshell halves 22 a and 22 b defines a plurality ofbarbs 36 that are configured to engage with the distal or moveable ends 16 of the locking clips 14. Each spring-like locking clip 14 is biased slightly outwardly to cause the distal or moveable ends 16 to fit between tworespective barbs 36. Thebarbs 36 are spaced as close together as possible to prevent any axial movement of thebloodline connector 8 when theassurance device 20 is engaged about the matedconnectors - The
interior wall 38 of theluer housing portion 28 does not define barbs and has a diameter that is large enough to house any suitable industrial catheter/fistula needle connector, such asconnector 4 illustrated inFIG. 1 . - As seen in
FIGS. 3 and 4 , after a user connects the catheter orfistula needle 2 to thebloodline 6, the user places theconnected catheter connector 4 andbloodline connector 8 into theassurance device 20, which when closed, locksbarbs 36 onto the moveable ends 16 of the slightly outwardly biased locking clips 14 of thebloodline connector 8. - Referring now to
FIGS. 5 to 7 , a second primary embodiment of the assurance device is illustrated byassurance device 120, which is configured to be compatible with any suitable industrial catheter/fistula needle connector and is specifically configured for use with thebloodline connector 8 or a similar bloodline connector. -
Assurance device 120 includes internal and external clamshells. Internal clamshell halves 123 a and 123 b pressure seal tobloodline connector 8 and form outwardly extendingbarbs 137. In an alternative embodiment, internal clamshell halves 123 a and 123 b are hinged together and hingedly close aboutbloodline connector 8. - External clamshell halves 122 a and 122 b rotatably open about
hinge 124 and include inwardly facingthreads 136 that catch or lock ontoouter barbs 137 of the inner clamshell halves 123 a and 123 b. The outer clamshell halves 122 a and 122 b also define a housing that accommodates any suitable industrial catheter/fistula connector. -
Assurance device 120 includes a closing clip 130 (FIG. 7 ) positioned at the open outer or non-hinged side of the external clamshell halves 122 a and 122 b.Closing clip 130 includes amale element 132 a and afemale element 132 b, which lock together to hold theassurance device 120 closed when closed about the matedluer connectors assurance device 120 by manually disengaging themale element 132 a from the respectivefemale element 132 b. Any alternatives discussed above for lockingclip 30 is also applicable toclosing clip 130. - The catheter end of the external clamshell defines an opening formed of opening
portions respective clamshell halves catheter 2 inFIG. 1 . The bloodline end of the external clamshell is left open to accommodate thebloodline connector 8, as seen inFIGS. 6 and 7 . - Referring to
FIGS. 6 and 7 , after a user connects the catheter orfistula needle 2 to thebloodline 6, the user pressure fits the internal clamshell halves 123 a and 123 b about thebloodline connector 8. Then, the user closes the external clamshell halves 122 a and 122 b about the internal clamshell halves 123 a and 123 b, causing the inwardly facingbarbs 136 of the external clamshell halves 122 a and 122 b to engage the outwardly facingbarbs 137 extending from the internal clamshell halves 123 a and 123 b. - Referring now to
FIGS. 8 to 10 , a third primary embodiment of the assurance device is illustrated byassurance device 220, which is compatible with any suitable industrial catheter/fistula needle connector and is specifically configured for use with thebloodline connector 8 or a similar bloodline connector. It should be noted thatblood line connectors 8 may, but do not have to, include spring-line clips 14 discussed above for eitherassurance device - As best illustrated in
FIG. 8 ,assurance device 220 includes a clamshell having twohalves hinge 224. It should be appreciated that althoughFIGS. 8 and 9 illustrate the clamshell halves 222 a and 222 b having onehinge 224, the clamshell halves 222 a and 222 b may be attached by a single hinge or other desired number of hinges or may be separate pieces. -
Assurance device 220 includes amale luer portion 240 that pressure seals tobloodline connector 8.Male luer portion 240 extends to a femaleluer housing portion 242, which is lined with acompressible material 244 that conforms around any suitable industrial catheter/fistula needle connector when theassurance device 220 is closed about the mated connectors.Material 244 is in one embodiment a rubber, sponge rubber, or memory foam having a relatively high coefficient of friction. Silicone or neoprene may be suitable materials.Material 244 is adhered tofemale luer portion 242 in one embodiment.Material 244, e.g., if sponge-like, also provides the added benefit of absorbing fluid or blood in the event of luer disconnection.Frictional material 244 also prevents rotation of the catheter/fistula needlefemale luer connector 4 withindevice 220 and relative to thebloodline connector 8. - Each of the
male luer portion 240 andfemale luer portion 242 includes aclosing clip 230 positioned at the open outer or non-hinged side of the clamshell halves 222 a and 222 b. Eachclosing clip 230 includes amale element 232 a and afemale element 232 b, which lock together to hold theassurance device 220 closed when closed about the matedluer connectors assurance device 220 by manually disengaging themale elements 232 a from their respectivefemale elements 232 b.Closing clip 230 includes any of the alternative embodiments discussed above forclip 30. - The catheter end of the clamshell defines an opening formed from opening
portions respective clamshell halves catheter 2 inFIG. 1 . The bloodline end of theassurance device 220 defines an opening formed from openingportions respective clamshell halves bloodline connector 8. - As seen in
FIGS. 9 and 10 , after a user connects the catheter to the bloodline, the user positions the upper portion of theassurance device 220 in engagement with thebloodline connector 8. Thefemale luer connector 4 is accordingly positioned along the compressible material in the female luer portion 238 of theassurance device 220, which causescompressible material 244 to squeeze to and conform about thefemale luer connector 4 when theassurance device 220 is closed about the matedconnectors female luer connector 4 movement both axially and rotationally. - It should be understood that various changes and modifications to the presently preferred embodiments described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present subject matter and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims.
Claims (20)
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2009
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- 2009-12-18 WO PCT/US2009/068760 patent/WO2010071812A1/en active Application Filing
- 2009-12-18 CA CA2747510A patent/CA2747510C/en active Active
- 2009-12-18 EP EP09796226.0A patent/EP2382005B1/en active Active
- 2009-12-18 MX MX2011006613A patent/MX2011006613A/en active IP Right Grant
- 2009-12-18 JP JP2011542491A patent/JP5608679B2/en not_active Expired - Fee Related
- 2009-12-18 BR BRPI0922995A patent/BRPI0922995A2/en not_active IP Right Cessation
-
2013
- 2013-12-06 US US14/099,489 patent/US20140094775A1/en not_active Abandoned
- 2013-12-06 US US14/099,514 patent/US20140100548A1/en not_active Abandoned
- 2013-12-06 US US14/099,503 patent/US9867925B2/en active Active
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102355375B1 (en) * | 2020-09-28 | 2022-02-07 | 주식회사 인성메디칼 | Medical fixing clip device |
Also Published As
Publication number | Publication date |
---|---|
US20100210990A1 (en) | 2010-08-19 |
US20140100547A1 (en) | 2014-04-10 |
MX2011006613A (en) | 2011-07-12 |
WO2010071812A1 (en) | 2010-06-24 |
CA2747510C (en) | 2017-03-07 |
US20140100548A1 (en) | 2014-04-10 |
JP2012512722A (en) | 2012-06-07 |
BRPI0922995A2 (en) | 2016-01-26 |
EP2382005B1 (en) | 2018-04-18 |
JP5608679B2 (en) | 2014-10-15 |
US8603022B2 (en) | 2013-12-10 |
EP2382005A1 (en) | 2011-11-02 |
US9867925B2 (en) | 2018-01-16 |
CA2747510A1 (en) | 2010-06-24 |
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Owner name: BAXTER INTERNATIONAL INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LYONS, BERNARD J.;MALIEKKAL, SHINCY J.;BURNS, WILLIAM P.;AND OTHERS;SIGNING DATES FROM 20090116 TO 20090122;REEL/FRAME:032369/0555 Owner name: BAXTER HEALTHCARE S.A., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LYONS, BERNARD J.;MALIEKKAL, SHINCY J.;BURNS, WILLIAM P.;AND OTHERS;SIGNING DATES FROM 20090116 TO 20090122;REEL/FRAME:032369/0555 |
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