|Publication number||USRE39499 E1|
|Application number||US 09/998,991|
|Publication date||Feb 27, 2007|
|Filing date||Nov 29, 2001|
|Priority date||Jan 15, 1998|
|Publication number||09998991, 998991, US RE39499 E1, US RE39499E1, US-E1-RE39499, USRE39499 E1, USRE39499E1|
|Inventors||Nicholas Sandor Racz|
|Original Assignee||Epimed International, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (30), Referenced by (21), Classifications (18), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a divisional of application Ser. No. 09/007,460, filed Jan. 15, 1998, now U.S. Pat. No. 5,993,437, issued Nov. 30, 1999.
This invention generally relates to connectors for catheters which introduce fluids into body cavities. More specifically, the invention relates to devices disposed within catheter connectors which prevent the dislocation of a catheter tube from a catheter connector.
Catheter connectors are well known. One such device, which is commonly referred to as a “Tuohy-Borst” connector, includes two threaded members which enclose an elongated, compressible O-ring. In use of that device, a catheter tube is inserted into one of the connector members and inserted through a channel defined by the O-ring. Upon engagement of the two threaded members, the O-ring is longitudinally compressed, decreasing the cross-sectional diameter of the channel and frictionally securing the catheter tube therein.
A similar device is disclosed in U.S. Pat. No. 5,053,015 to Gross (Oct. 1,1991). The catheter connector of Gross includes a body member, into which a catheter tube is insertable, a compression member which locks into the body member upon interconnection therewith, and a compressible, elongated plug disposed in the body member. In use of that device, a catheter tube is inserted into the body member and through a channel of the elongated plug. Upon engagement of the body and compression members, the elongated plug is compressed, which decreases the cross-sectional diameter of the channel and frictionally secures the catheter tube therein. The connector assembly of Gross also includes a slip washer, which merely facilitates the rotational interconnection of the body and compression members (i.e., by screwing the complementary threaded body and compression members together).
Such devices are somewhat problematic in that the sole use of a compressible member having a channel formed therethrough may be insufficient to adequately secure a catheter tube within the connector especially if the catheter surface gets wet before insertion of the catheter tube into the connector.
Although the previously-described catheter connectors work well for many applications, it has been found that an additional catheter tube-securing element prevents dislocation of a catheter tube from the catheter connector to an even greater degree.
The invention thus includes a compressible lock washer which is useful in a catheter connector. As the lock washer is compressed, the cross-sectional diameter of a tube receptacle formed centrally therethrough decreases, thus securing a tube placed therein. In use, a catheter tube is inserted into a catheter connector assembly, including the lock washer disposed therein. Upon interconnection of the catheter connector members, the lock washer is compressed, decreasing the cross-sectional diameter of the tube receptacle and engaging the catheter tube which runs therethrough.
In another aspect, the invention includes a catheter connector assembly including a compressible lock washer, as previously described, and methods for manufacturing the lock washer and connector.
In the drawings, which depict presently preferred embodiments of the invention and in which like reference numerals refer to like parts in different views:
As shown in
The distal end of the cap 22 includes a body and may also include an elongated cylindrical extension, which is referred to as an alignment element 48. The body of the cap 22 defines an elongated lumen 40 that is open to the proximal end of the cap and extends approximately centrally through the cap and into the alignment element 48 thereof. The alignment element 48 includes an end wall 56, thus lumen 40 includes a closed end. The cap 22 also includes a center member receptacle 51 formed in the distal end thereof of receiving and engaging the proximal end of the center member 24 (i.e., locking element 49, described below). The center member receptacle 51 include an interconnect component 50 (e.g., a LEUR LOCK™ receptacle) formed therein.
The center member 24, which is also referred to as a second member for simplicity, is a generally hollow cylindrical member including a body that defines a lumen 44 entirely therethrough. An insertion member receptacle 26 is disposed about the periphery of the center member 24, proximate the distal end of the same. The insertion member receptacle 26 is configured to receive the proximal end of the insertion member 28 and interconnect therewith (e.g., by threads). The proximal end of the center member 24 includes a hollow, cylindrical extension, which is referred to as a locking element 49. The proximal end of the lumen 44 is defined by locking element 49 and is configured to receive the alignment element 48 of the cap 22. The cross-sectional diameter of the lumen 44 may decrease near the distal end of the center member 24. The locking element 49 includes locking elements 52 (e.g., LEUR LOCK™ extensions) adjacent the distal end thereof, which are configured to engage the interconnect component 50 of the cap 22.
The insertion member 28, which is also referred to as a first member for simplicity, is also a generally hollow cylindrical member including a body that defines an elongated lumen 30 through the center thereof, a distal end 54, and a substantially round aperture 42 formed approximately centrally through the distal end. The proximal end of the insertion member 28 includes an interconnection component 46 (e.g., external threading) that is complementary to a first receptacle 26 (which includes, e.g., internal threading) and configured to interconnect therewith. The lumen 30 is configured to receive a gasket 32. The distal end aperture 42 is configured to facilitate the insertion of a catheter tube 58 therethrough.
The lock washer 60 and gasket 32 are disposed within the lumen 30 of the insertion member 28 and are held into place by the interconnection of the insertion member 28 with the center member 24. In order to interconnect the center member 24 and the insertion member 28, the interconnection component 46 of the insert member 28 is inserted into and engaged by the receptacle 26 of the distal end of the center member 24.
With reference to
Referring now to
Each tube engagement flange 64A′, 64B′, 64C′, 64D′ is a resilient member that includes a central tip 66A′, 66B′, 66C′, 66D′. Preferably, the central tips 66A-D′ are collectively configured to receive a catheter tube 58 (see
Webs 68′A, 68′B, 68°C, 68′D are collapsible, resilient elements which facilitate the transition of the tube engagement flanges 64A′, 64B′, 64C′, 64D′, and therefore the lock washer 60′, from the engaged state to the relaxed state following the release of a transverse load thereon. While the lock washer 60′ is in the engaged sate, as depicted in
Referring again to
With continued reference to
Although shown in use as a catheter connector, the invention may also be used to establish and maintain a fluidic connect between other types of tubes.
After being apprised of the devices according to the invention, methods of making them will become readily apparent to those of skill in the art. For instance, a lock washer can be made from a hypoallergenic, firm, resilient plastic material such as acrylonitrile butadiene styrene (ABS), acetyl, nylon, polycarbonate, polyesters, polyethylene, polypropylene, polystyrene, polysulfone, polyurethane, and polyvinyl chloride (PVC). Likewise, a cap, insertion member, and center member may be manufactured from similar materials and by methods which are readily apparent to those of skill in the art. The gasket can be made from a hypoallergenic, collapsible, resilient, low durometer elastomeric material such as a urethane.
Furthermore, the lock washer and connector assembly might otherwise be modified. For instance, in its relaxed state, the lock washer may have a substantially hemispherical appearance. The tube engagement flanges will typically number from three to eight per each lock washer. The connector disclosed herein will work with most types of catheters. The lock washer disclosed herein will work with most Tuohy-Borst catheter connectors. The size of the lock washer and connector will be chosen dependent on the size of the catheter. Typically however, for epidural applications, the lock washer has a diameter of less than about 1 cm and the catheter tube secured thereby has outer diameter of about one mm. As another example, an element other than the described cap, such as a LEUR LOCK™ syringe, may be joined to the connector.
Although the invention has been described with regard to certain preferred embodiments, the scope of the invention is to be defined by the appended claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2339549 *||Mar 6, 1941||Jan 18, 1944||Firestone Tire & Rubber Co||Resilient washer|
|US2950944 *||Mar 25, 1957||Aug 30, 1960||James J Cooney||Wheel bearing retaining means|
|US3449799 *||Jun 1, 1967||Jun 17, 1969||Chrysler Corp||Fastener for connecting apertured structure to another structure|
|US3561792 *||Jan 7, 1969||Feb 9, 1971||Super Sagless Spring Corp||Rivet pivoted members and washers therefor|
|US3920215 *||May 13, 1974||Nov 18, 1975||Knauf Dieter W||Valve|
|US4323065 *||Jan 17, 1980||Apr 6, 1982||Baxter Travenol Laboratories, Inc.||Attachable connector for catheter|
|US4568334 *||Apr 25, 1984||Feb 4, 1986||Lynn Lawrence A||Intravascular catheter preparation and dispensing container assembly|
|US4615692 *||Oct 7, 1985||Oct 7, 1986||Giacalone Joseph J||Portable female catheter|
|US4676530 *||Apr 7, 1983||Jun 30, 1987||Warner-Lambert Company||Coupling assembly for use in fluid flow systems|
|US4757662 *||Feb 9, 1987||Jul 19, 1988||G.B.R. Enterprises||Membrane roofing fastener|
|US4769017 *||Jan 29, 1987||Sep 6, 1988||Fath John J||Self-sealing infusion manifold and catheter connector|
|US4799845 *||May 18, 1987||Jan 24, 1989||Dunlop Construction Products Inc.||Means for attaching sheet material to a substrate|
|US4950255 *||Apr 7, 1988||Aug 21, 1990||I-Flow Corporation||Catheter connector and clamp|
|US5053015 *||Aug 30, 1989||Oct 1, 1991||The Kendall Company||Locking catheter adapter|
|US5188607 *||Nov 12, 1991||Feb 23, 1993||Thomas Wu||Valve catheter connector assembly|
|US5234413 *||Dec 24, 1991||Aug 10, 1993||Wonder Terry M||Infusion rate regulator device|
|US5336206 *||Apr 12, 1993||Aug 9, 1994||United States Surgical Corporation||Trocar penetration depth indicator and guide tube positioning device|
|US5350364 *||Jan 4, 1993||Sep 27, 1994||Ethicon, Inc.||Universal seal for trocar assembly|
|US5366262 *||Jul 23, 1992||Nov 22, 1994||Furnas Electric Co.||Quick connect fluid fitting|
|US5390898 *||Apr 6, 1994||Feb 21, 1995||Habley Medical Technology Corporation||Needleless dual direction check valve|
|US5505714 *||Jul 28, 1994||Apr 9, 1996||Arrow International Investment Corp.||Non-rotational catheter compression clamp|
|US5531723 *||Apr 20, 1994||Jul 2, 1996||Solazzo; Anthony||Ureteral catheter connector adapter|
|US5603702 *||Aug 8, 1994||Feb 18, 1997||United States Surgical Corporation||Valve system for cannula assembly|
|US5993437 *||Jan 15, 1998||Nov 30, 1999||Epimed International, Inc.||Catheter connector|
|US6254589 *||Nov 19, 1999||Jul 3, 2001||Epimed International, Inc.||Catheter connector|
|DE3624745A1 *||Jul 22, 1986||Feb 4, 1988||Sterimed Gmbh||Coupling for connection of a medical tube, especially a drain or a catheter, to another device|
|EP0666446A1 *||Feb 8, 1995||Aug 9, 1995||Osamu Gouda||Conduit coupling|
|EP0930083A2 *||Jan 15, 1999||Jul 21, 1999||Epimed International, Inc.||Catheter connector|
|GB2172071A *||Title not available|
|GB2252380A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7704002||Feb 17, 2009||Apr 27, 2010||Medical Components, Inc.||Luer cleaner with self-puncturing reservoir|
|US7753338||Jul 13, 2010||Baxter International Inc.||Luer activated device with minimal fluid displacement|
|US7857793||Jul 13, 2005||Dec 28, 2010||Medical Components Inc.||Luer cleaner|
|US7981090||Jul 19, 2011||Baxter International Inc.||Luer activated device|
|US7993309||Aug 9, 2011||Medical Components, Inc.||Scrubber for medical device cleaner|
|US8202461||Jan 14, 2009||Jun 19, 2012||Custom Medical Applications, Inc.||Flow elements for use with flexible spinal needles, needle assemblies for manufacture and methods therefor|
|US8221363||Jul 17, 2012||Baxter Healthcare S.A.||Luer activated device with valve element under tension|
|US8287496||Oct 16, 2012||Custom Medical Applications, Inc.||Flow elements for use with flexible spinal needles, needle assemblies and methods therefor|
|US8298208||Jul 27, 2010||Oct 30, 2012||Custom Medical Applications, Inc.||Flow elements for use with flexible spinal needles, needle assemblies and methods therefor|
|US9125684||Nov 1, 2011||Sep 8, 2015||Spectra Medical Devices, Inc.||Introducer for radiofrequency needle|
|US20050090801 *||Oct 27, 2003||Apr 28, 2005||Racz N. S.||Safety spinal catheter|
|US20050284457 *||Jul 13, 2005||Dec 29, 2005||Hatcher Forest A||Positive fit "lever" feed adapter for paintball gun|
|US20080065017 *||Oct 31, 2007||Mar 13, 2008||Racz N Sandor||Method of using flexible spinal needle assemblies|
|US20080097407 *||Oct 18, 2006||Apr 24, 2008||Michael Plishka||Luer activated device with compressible valve element|
|US20080172003 *||Oct 18, 2006||Jul 17, 2008||Michael Plishka||Luer activated device|
|US20080172005 *||Oct 18, 2006||Jul 17, 2008||Jepson Steven C||Luer activated device with valve element under tension|
|US20090187140 *||Jul 23, 2009||Custom Medical Applications, Inc.||Flow elements for use with flexible spinal needles, needle assemblies and methods therefor|
|US20090204080 *||Feb 12, 2008||Aug 13, 2009||Baxter International Inc.||Two-way valve connector|
|US20090205151 *||Feb 17, 2009||Aug 20, 2009||Medical Components, Inc||Luer Cleaner with Self-Puncturing Reservoir|
|US20100022989 *||Jul 25, 2008||Jan 28, 2010||Parasmo Ronald S||Steerable catheter and method of making the same|
|US20100192975 *||Apr 15, 2010||Aug 5, 2010||Medical Components, Inc.||Scrubber for Medical Device Cleaner|
|U.S. Classification||604/534, 411/512, 411/531, 411/161, 604/905, 128/912|
|International Classification||F16B39/24, F16B21/00, A61M39/12, A61M25/18, A61M39/06, A61M25/16|
|Cooperative Classification||A61M39/0613, A61M39/12, A61M2039/1027, A61M2039/062|
|European Classification||A61M39/12, A61M39/06D|
|Nov 29, 2006||AS||Assignment|
Owner name: EPIMED INTERNATIONAL, INC., NEW YORK
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RACZ, N. SANDOR;REEL/FRAME:018562/0242
Effective date: 20061129
|Apr 30, 2008||FPAY||Fee payment|
Year of fee payment: 8
|Jul 9, 2012||AS||Assignment|
Owner name: CUSTOM MEDICAL APPLICATIONS, INC., NEW YORK
Effective date: 20120629
Free format text: NUNC PRO TUNC ASSIGNMENT - EFFECTIVE JULY 1, 2004;ASSIGNOR:EPIMED INTERNATIONAL, INC.;REEL/FRAME:028527/0538
|Aug 8, 2012||FPAY||Fee payment|
Year of fee payment: 12