|Publication number||US20050082828 A1|
|Application number||US 10/940,313|
|Publication date||Apr 21, 2005|
|Filing date||Sep 13, 2004|
|Priority date||Sep 12, 2003|
|Also published as||US7878553, US20090256355, US20110127767|
|Publication number||10940313, 940313, US 2005/0082828 A1, US 2005/082828 A1, US 20050082828 A1, US 20050082828A1, US 2005082828 A1, US 2005082828A1, US-A1-20050082828, US-A1-2005082828, US2005/0082828A1, US2005/082828A1, US20050082828 A1, US20050082828A1, US2005082828 A1, US2005082828A1|
|Inventors||Jeffrey Wicks, Bruce Williams|
|Original Assignee||Wicks Jeffrey C., Williams Bruce A.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (99), Referenced by (19), Classifications (20), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application claims priority to U.S. Provisional Patent Application No. 60/502,325 titled “Releasable Connection Assembly for Joining Tubing Sections,” filed Sep. 12, 2003, which is hereby incorporated by reference herein.
a. Field of the Invention
This invention relates generally to the field of medical devices used for the transport of both gaseous and liquid fluids and more specifically to a connection assembly for creating a releasable fluid seal connection between two or more sections of tubing.
b. Background Art
Tubing sections, for example, medical tubing, must often be joined together to provide for fluid flow from one medical device to another. It is often desirable, therefore, to connect and disconnect tubing sections from one another. For example, when a patient is provided intravenous fluids, it is often required that an empty fluid bag be replaced with a full fluid bag. It is preferred to merely detach a tubing section connected with the fluid bag to a second tubing section connected with the needle or stent placed intravenously in the patient. In order to switch between the first fluid bag and the second fluid bag, the tubing section connected with the first fluid bag can be disconnected from the second tubing section. The second tubing section can then be easily connected with a tubing section connected with the new fluid bag. This is much simpler than removing the intravenous stent from the patient and replacing it with a new stent directly connected with a new the fluid bag.
Against this backdrop the present disclosure is provided.
The present invention is fundamentally a releasable connection system for connecting two sections of tubing together. In one embodiment, the releasable connection assembly for connecting a first section of tubing with a second section of tubing includes a male fitting further comprising a male shaft defining a lumen therethrough, at least one clasp operably associated therewith; and a female fitting including a female shaft defining a lumen therethrough, wherein an inner diameter of the female shaft is slightly larger than the outer diameter of the male shaft; and at least one catch is disposed on an outer surface thereof for interfacing with and releasably retaining the clasp.
Further, in an alternative embodiment, the clasp may be rotatably connected to the male shaft, or the catch may be rotatably connected to the female shaft. In this manner the female fitting and male fitting can be rotatably engaged.
In another embodiment of the invention, a releasable connection assembly for connecting a first section of tubing with a second section of tubing includes a male fitting further comprising a male shaft defining a lumen therethrough; a pair of clasps disposed on an outer surface thereof; a sealing member; and a female fitting further comprising a female shaft defining a lumen therethrough, wherein an inner diameter of the female shaft is slightly larger than the outer diameter of the male shaft; and a pair of catches disposed on an outer surface thereof for interfacing with and releasably retaining the pair of clasps on the male fitting respectively; wherein the sealing member engages an inner surface of the female shaft to create a fluid-tight seal between the male fitting and the female fitting.
In a further embodiment, a releasable connection assembly for connecting a plurality of first sections of tubing with a plurality of second sections of tubing includes a first plate containing at least two male fittings, each male fitting further comprising a male shaft defining a lumen therethrough; at least one clasp operably associated with said first plate; and a second plate containing at least two female fittings, each female fitting including a female shaft defining a lumen therethrough, wherein an inner diameter of the female shaft is slightly larger than the outer diameter of the male shaft; and at least one catch is operably associated with the second plate for interfacing with and releasably retaining the clasp on the first plate.
Other features, utilities, and advantages of various embodiments of the invention will be apparent from the following more particular description of embodiments of the invention as illustrated in the accompanying drawings and defined in the appended claims.
A first exemplary releasable connection assembly 1 according to the present invention is depicted, either in whole or in part, in
The male fitting 2 connects with the female fitting 4 as best shown in cross-section in
The primary component of the female fitting 4 is a female shaft 6 defining a first cylindrical lumen 7. The first tubing coupling 44 extends from the distal end of the female shaft 6. The first tubing coupling 44 includes a cannula portion 46 shaped as a frustum tapering toward the distal end. The proximal end of the cannula portion 46, i.e., at the larger diameter of the frustum, connects with a coupling shaft 50 of a narrower outer diameter than that of the proximal end of the cannula portion 46. The difference in outer diameters results in an annular shelf that functions as a coupling barb 48. As the coupling shaft 50 extends proximally toward the female shaft 6, the outer diameter gradually widens into a coupling flange 52 that ultimately interfaces with the distal end of the female shaft 6.
An oblong grip flange 14 may be provided at the distal end of the female shaft 6. The narrower diameter of the oblong grip flange 14 may be equal to the outer diameter of the female shaft 6. The wider diameter of the oblong grip flange 14 is then wider than the diameter of the female shaft 6 to provide flange extensions on opposite sides of the female shaft 6 to provide easy gripping surfaces. Note that flange shapes are not critical as long as the flange provides an enhance gripping surface for the user.
A pair of catches 8 may be formed on opposite sides of the outer surface of the female shaft 6 at the proximal end. The catches 8 may further be oriented in positions 90° (or any other functional angles) about the female shaft 6 apart from the positions of the wide diameter portions of the oblong grip flange 14. Each of the catches 8 may include two trapezoidal side walls 68, spaced apart from and parallel to each other, and extending generally normally from the outer surface of the female shaft 6. An end wall 64 connects the ends of the side walls 68 opposite the surface of the female shaft 6 to form a slot 10. A retention surface 66 may be provided by the distal face of the end wall 64 for aiding the retention of the male fitting 2 as described later herein.
The primary component of the male fitting 2 is a male shaft 22, which in this first embodiment may be a cylindrical wall defining a second cylindrical male shaft lumen 23. A first annular recess 24 may be formed in the outer surface of the male shaft 22 adjacent to, but spaced apart from the distal end 26 of the male shaft 22. An O-ring 28 may be seated within the first annular recess 24 for creating a fluid-tight seal with the female fitting 4 as will be further described herein.
The second tubing coupling 54 extends from the proximal end of the male shaft 22. The second tubing coupling 54 includes a cannula portion 56 shaped as a frustum tapering toward the proximal end. The distal end of the cannula portion 56, i.e., at the larger diameter of the frustum, connects with a coupling shaft 60 of a narrower outer diameter than that of the distal end of the cannula portion 56. The difference in outer diameters results in an annular shelf that functions as a coupling barb 58. As the coupling shaft 60 extends distally toward the male shaft 22, the outer diameter gradually widens into a coupling flange 62 that ultimately interfaces with the proximal end of the male shaft 22.
One or more annular grip ribs 16 may also be formed about the outer surface of the proximal end of the male shaft 22. The diameter of each of the annular grip ribs 16 is larger than the outer diameter of the male shaft 22, thereby providing a good grasping surface for a user. A pair of clasps 12 may each be formed primarily of a tang 30 extending spaced apart from the male shaft 22 and parallel to the axis of male shaft 22. The proximal ends of the tangs 30 may form an elbow 31 and connect with the proximal end of the male shaft 22 at the location of the annular grip ribs 16. The annular grip ribs 16 may provide reinforcement to the connect of the tangs 30 with the male shaft 22. The tangs 30 may extend almost the entire length of the male shaft 22. The distal ends of the tangs 30 may each be formed with a clasp tab 32 protruding in a direction normal to the outer surface of the male shaft 22 adjacent the respective clasp 12. The tang 20 distal to the clasp tab 32 may have an outer taper 36 and an inner taper 38.
As shown in
The tangs 30 of the clasps 12 are biased in a direction normal to the outer surface 72 of the male shaft 22 (note, however, that the tangs and clasps of the invention may also be non-normal to the outer surface as long as the interaction is functional). As shown in
As shown in
As shown in
Similarly, the male fitting 2 is connected with the second tubing section 20 via the second tubing coupling 54. The user may push one end of the second tubing section 20, which is generally a pliable, elastomeric material, over the cannula 56 of the second tubing coupling 54. The gradually increasing taper of the cannula 56 expands the diameter of the second tubing section 20. The second tubing section 20 then passes over a narrower coupling shaft 60 section of the second tubing coupling 54, which allows the diameter of the second tubing section 20 to constrict toward its original diameter size. The second tubing coupling 54 then expands in diameter again to form a coupling shaft flange 62 against which the inner surface of the second tubing section 20 snugly fits. The interface between the cannula 56 and the coupling shaft 60 forms a coupling barb 58 that acts to resist the disengagement of the second tubing section 20 from the second tubing coupling 54. The coupling shaft flange 62 aids in this resistance by pinching the second tubing section 20 against the coupling shaft 60 and the coupling barb 58. Note that other attachment means between the tubing and male fitting are also envisioned to be within the scope of the present invention.
Preferably, the inner diameters of the first tubing section 18, the second tubing section 20, the first tubing coupling 44, the second tubing coupling 54, and the male shaft 22 are all of generally the same diameter to provide for generally constant fluid flow rate, pressure, and volume throughout the connection assembly 1. However, if a change in pressure, flow rate, or flow volume were desired, the diameters of each of these sections could be designed to achieve a desired result.
In another embodiment of the invention as shown in
In another embodiment of the invention as shown in
The proximal end of the female shaft 6 may interface with a collar mating surface 41 rather than the proximal mating surface 40 of the first embodiment as shown in at least
Another embodiment of a connection assembly 100 is shown in
Still referring to
It should be apparent that additional male and female fittings could be integrated together to form connection assemblies for connecting three, four, or more sets of tubing sections. The male and female fittings could be integrated together side by side to lie in a single plane, or stacked upon each other to form triangular, square, pentagonal, or other formations and arrangements. In addition, embodiments of the present invention may include one, three, seven or any number of clasps or catches. Note also that there could be a greater number of clasps of catches within any one embodiment to allow for adjustable rotatable orientation of connections.
Another embodiment of a releasable connection assembly 201 is shown in
The male fitting shut-off valve 284 is constructed primarily of a first valve body 285 and a first spring 288. The first valve body 285 is positioned toward the distal end of the male shaft 222. The distal end of the first spring 288 is connected with the proximal end of the first valve body 285 while the proximal end of the first spring 288 is connected with a first cap 302 that fixedly interfaces with the proximal end of the male shaft 222 to provide a stationary anchor for the first spring 288. The first cap 302 also tapers proximally to form a first fluid port 304 extending into a lumen defined by the second tubing coupling 254. Rather than being integrally formed with the male fitting 202, in this embodiment the first cap 302 may be directly attached to the male shaft 222 or it may be sandwiched between the second tubing coupling 254 and the male shaft 222. In the latter case, the first cap 302 may be fastened to the proximal end of the male shaft 222 by means of, but not limited to, welding, adhesive, snap-fit or over-molding, to allow for the prior insertion of the first shut-off valve 284 during assembly of the male fitting 202.
The distal end of the lumen 223 in the male shaft 222 tapers slightly to reduce the diameter of the lumen 223 at the distal end of the male shaft 222. The diameter of the first valve body 285 is slightly smaller than the diameter of the lumen 223 distal from the male tapered portion 296. The proximal end of the first valve body 285 is also encompassed by a first valve O-ring 290, which is slightly smaller in diameter than the lumen 223 proximal to the male tapered portion 296. The distal end of the first valve body 285 defines first valve flues 294 separated by first valve collar supports 292, which support a first valve collar 298. A first valve peak 300 is also defined by the distal end of the first valve body 285 and is centered between the first valve collar supports 292. The peak 300 is a flow diverter. The first valve flues 294 allow fluid to flow therethrough and are provided to allow fluid to flow between the proximal end of the first valve body 285 and a lumen in the first valve collar 298.
Similarly, the female fitting shut-off valve 286 is constructed primarily of a second valve body 287 and a second spring 289. The second valve body 287 is positioned toward the proximal end of the female shaft 206. The proximal end of the second spring 289 is connected with the distal end of the second valve body 287 while the distal end of the second spring 289 is connected with a second cap 303 that fixedly interfaces with the distal end of the female shaft 206 to provide a stationary anchor for the second spring 289. The second cap 303 also tapers distally to form a second fluid port 305 extending into a lumen defined by the first tubing coupling 244. Rather than being integrally formed with the female fitting 204, in this embodiment the second cap 303 may be directly attached to the female shaft 206 or it may be sandwiched between the first tubing coupling 244 and the female shaft 206. In the latter case, the second cap 303 may be either snap-fitted or over-molded about the distal end of the female shaft 206, to allow for the prior insertion of the second shut-off valve 286 during assembly of the female fitting 204.
The proximal end of the female fitting lumen 207 in the female shaft 206 tapers slightly to reduce the diameter of the lumen 207 at the proximal end of the female shaft 206. The diameter of the second valve body 287 is slightly smaller than the diameter of the lumen 207 proximal from the female tapered portion 297. The distal end of the second valve body 287 is also encompassed by a second valve O-ring 291, which is slightly smaller in diameter than the lumen 207 distal to the female tapered portion 297. The proximal end of the second valve body 287 defines second valve flues 295 separated by second valve collar supports 293, which support a second valve collar 299. A second valve peak 301 is also defined by the proximal end of the second valve body 287 and is centered between the second valve collar supports 293. The peak 301 is a flow diverter. The second valve flues 295 allow fluid to flow therethrough and are provided to allow fluid to flow between the distal end of the second valve body 287 and a lumen in the second valve collar 299. (See arrow 307 for path of fluid through assembly).
Similarly, when the female fitting 204 is disengaged from the male fitting 202, the second spring 289 forces the second valve body 287 to move proximally within the lumen 207 of the female shaft 206. The proximal end of the second valve body 285, primarily the second valve collar 299, extends proximally out of the lumen 207 past the proximal end of the female shaft 206. The proximal movement of the second valve body 287 is halted by the engagement of the second valve O-ring 291 with the female tapered portion 297. This engagement creates a fluid-tight seal between the second shut-off valve 286 and the female shaft 206 preventing fluid leakage from a tubing section connected with the first tubing coupling 244 on the female fitting 204.
As shown in
When the male portion (not shown) is connected to the female portion 324, the tangs fit into and engage the catch 338 to hold the two pieces together. The two pieces may then rotate with respect to one another while maintaining engagement. When rotated, the tangs 336 cause the collar 328 to rotate around the female portion 324.
Any number of connection structure portions 356, 372 could be held in engagement by this embodiment, and more than one buckle structure 354 could be used to sufficiently hold the plates 370, 374 together, and thus the respective connector portions together. The male and female connector portions 356, 372 may be arranged to allow only one orientation of engagement between the gang of female connector portions and male connector portions. The catch 360 and tangs 368 are shown designed to engage near the periphery of the upper plate 374, which allows more convenient grasping by the user. The catch 360 and tangs 368 may also be designed to engage at a location away from the periphery if so desired.
In another embodiment as shown in
As shown in
The sharp 383 can also be movably positioned in the channel 385 of the female portion 380. This allows the base 388 of the sharp member 383 to seal the channel of the female portion when not connected to a male portion. The sharp member 383 is biased into the sealed position by a spring 390. When connected with the male connector portion 378 and the male shaft 386 is inserted, the end of the sharp member 383 punctures the seal 382 on the lumen 384 of the male shaft 386, and the terminal end of the male shaft pushes on a collar or flange 392 formed near the sharp end 394 of the sharp member 383 to push the sharp out of a sealed engagement in the female end, opening up flow.
As used herein, lumen refers not only to its definition, but also refers to an opening, aperture, or other passageway. The fluid referred to herein can be gaseous, liquid, or other state of material that is flowable through a tube (i.e. granular). The connector structures described above can be used with one clasp and one catch, or multiple clasps and catches. While generally described above as sealed when connected together, the connector structures may be sealed or unsealed.
The connection between the male and female connector portions and their respective tube sections can be by means other than a barbed fitting, such as, but not limited to threaded, press-fit without a barb, John Guest fitting, ferrule, and panel mount.
Although various embodiments of this invention have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the spirit or scope of this invention. It is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative only of particular embodiments and not limiting. Changes in detail or structure may be made without departing from the basic elements of the invention as defined in the following claims.
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|USD734868||Nov 27, 2012||Jul 21, 2015||Medimop Medical Projects Ltd.||Drug vial adapter with downwardly depending stopper|
|EP2689798A1 *||Mar 22, 2012||Jan 29, 2014||Terumo Kabushiki Kaisha||Connecter assembly, male connecter, and female connecter|
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|WO2012095343A2 *||Jan 4, 2012||Jul 19, 2012||ATMOS Medizin Technik GmbH & Co. KG||Suction line for a vacuum wound treatment device having plug connector parts|
|WO2013050319A1 *||Oct 1, 2012||Apr 11, 2013||Maquet Cardiopulmonary Ag||Quick-coupling device|
|WO2013180853A1 *||Apr 24, 2013||Dec 5, 2013||Rosemount, Inc.||Process fluid pressure measurement system with improved coupling|
|WO2015017646A1 *||Jul 31, 2014||Feb 5, 2015||Convatec Technologies Inc.||Self-closing bag connector|
|U.S. Classification||285/319, 285/921, 285/320|
|International Classification||F16L37/56, F16L37/38, F16L37/098|
|Cooperative Classification||F16L37/56, F16L37/38, A61M2039/1083, A61M2039/1027, Y10S285/921, A61M39/105, F16L37/098, A61M2039/1088, A61M39/12|
|European Classification||A61M39/10M, A61M39/12, F16L37/56, F16L37/38, F16L37/098|
|Dec 21, 2004||AS||Assignment|
Owner name: VALUE PLASTICS, INC., COLORADO
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WICKS, JEFFREY CLARK;WILLIAMS, BRUCE ALAN;REEL/FRAME:015480/0235
Effective date: 20041018
|Oct 23, 2005||AS||Assignment|
Owner name: AMERICAN CAPITAL FINANCIAL SERVICES, INC., AS AGEN
Free format text: GRANT OF PATENT SECURITY INTEREST (FIRST LIEN);ASSIGNOR:VALUE PLASTICS, INC.;REEL/FRAME:016662/0866
Effective date: 20051014
Owner name: AMERICAN CAPITAL FINANCIAL SERVICES, INC., AS AGEN
Free format text: GRANT OF PATENT SECURITY INTEREST (SECOND LIEN);ASSIGNOR:VALUE PLASTICS, INC.;REEL/FRAME:016662/0874
Effective date: 20051014