# Patent

## Title
Anti-reflux mechanism for urine collection systems

## Abstract

A urine collection system includes an anti-flux mechanism to reduce the amount of urine that may flow from within the collection bag back into the urine meter. The urine collection system includes a urine meter, a collection member defining at least a first opening for receiving urine from the urine meter and a shield positioned adjacent the opening of the collection member. The shield is affixed to the collection member at predetermined connection points along a periphery of the shield whereby urine flows between the connection points from the urine meter to the collection member. The shield may be affixed to an internal surface of the bag. The shield may be spot welded to the collection member at the connection points. The shield may include at least a first slot configured to permit the passage of fluid therethrough.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 12/187,620, filed on Aug. 7, 2008, the entire contents of each application being incorporated by reference herein in its entirety.


BACKGROUND
1. Technical Field
The present disclosure relates to a urine meter for use with a urine collection bag or system. More specifically, the present disclosure relates to a urine meter constructed to facilitate faster drainage and more precise volume measurement.
2. Background of Related Art
Urine meters are well known and are commonly used in conjunction with urine collection systems for catheterized patients. Typically, a urine meter is secured to a urine collection bag and receives urine from a supply tube which is connected to a catheterized patient. The urine meter has a limited volume and includes indicia for measuring the volume of fluid deposited therein. The urine meter is attached to a urine collection bag of greater volume and includes at least one drain opening positioned in an upper portion of the meter which is in fluid communication with the urine collection bag. After a predetermined period of time of use, the volume of urine in the urine meter can be recorded and the contents of the urine meter can be emptied into the urine collection bag.
SUMMARY
Accordingly, it would desirable to provide a urine collection system that includes an anti-flux mechanism to reduce the amount of urine that may flow from within the collection bag back into the urine meter. In one embodiment, a urine collection system includes a urine meter, a collection member defining at least a first opening for receiving urine from the urine meter and a shield positioned adjacent the opening of the collection member. The shield is affixed to the collection member at predetermined connection points along a periphery of the shield whereby urine flows between the connection points from the urine meter to the collection member. The shield may be affixed to an internal surface of the bag. The shield may be spot welded to the collection member at the connection points. The shield may include at least a first slot configured to permit the passage of fluid therethrough.
In another embodiment, a urine collection system includes a urine meter defining a dump port, a collection member defining an opening for receiving urine from the urine meter and a guard mounted adjacent the dump port of the urine meter. The guard has at least one passage for permitting the passage of urine from the dump port into the opening and into the collection member. The guard may include a plurality of passages for permitting passage of urine. At least some of the passages of the guard may define different internal dimensions. The internal dimensions of the passages of the guard may increase from a lower end of the guard to an upper end of the guard. The passages may be in the form of slots in the guard. A flap may be positioned adjacent the passage of the guard. The flap may be adapted to be displaced relative to the passage to permit passage of urine from the dump port through the opening and into the collection member, and to selectively cover the passage when the urine in the collection member reaches a predetermined level.
In another embodiment, a urine collection system includes a urine meter defining a dump port, a collection member defining at least a first opening for receiving urine from the urine meter, a backboard disposed in the collection member and a flange extending from the backboard and configured to fluidly communicate with the dump port of the urine collection. The backboard may include ribs which define channels therebetween to permit urine to flow. The urine port may define a second dump port and the backboard may include a second flange configured to fluidly communicate with the second dump port. The backboard may define a substantially “T” shaped planar member.



BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiment(s) given below, serve to explain the principles of the disclosure, wherein:
FIG. 1 is a exploded perspective view of a prior art urine collection system including a urine meter and a collection bag;
FIG. 2 is a perspective view of the urine collection system of FIG. 1;
FIG. 3 is a perspective view of one embodiment of an anti-reflux mechanism according to aspects of the present disclosure;
FIGS. 4A and 4B are front and back side views of another embodiment of an anti-reflux mechanism according to aspects of the present disclosure;
FIG. 4C is a front view of the anti-reflux mechanism of FIGS. 4A and 4B selectively secured to a urine meter;
FIGS. 5A and 5B are first and second side view of another embodiment of the anti-reflux mechanism of FIGS. 4A-4C;
FIG. 6 is a front view of yet another embodiment of the anti-reflux mechanism of FIGS. 4A-4C;
FIG. 7A is a front view of yet another embodiment of an anti-reflux mechanism according to aspects of the present disclosure;
FIGS. 7B-7D are side views of the anti-reflux mechanism of FIG. 7A taken along lines 7B-7B (FIG. 7B), 7C-7C (FIG. 7C), 7D-7D (FIG. 7D); and
FIG. 7E is a side view of a urine collection system including the anti-reflux mechanism of FIGS. 7A-7D.



DETAILED DESCRIPTION
Referring initially to FIGS. 1 and 2, a prior art urine collection system is shown generally as urine collection system 10. Urine collection system 10 is described in detail in commonly owned U.S. Patent Application Publication No. 2007/0213639, the contents of which is hereby incorporated by reference in their entirety, and will only be discussed to the extent necessary to enable the aspects of the present disclosure. Urine collection system 10 includes a urine meter 20 and a collection member or bag 30. Urine meter 20 includes two large dump ports 22, 23 which are in fluid communication with openings 32, 33 formed in collection bag 30. Fluid “F” flows into urine meter 20 through tube “T” where the amount of fluid “F” may be measured before urine collection system 10 is tilted and fluid “F” drains into collection bag 30. While the configuration of urine collection system 10 enables a user to easily drain fluid “F” from urine meter 20 into collection bag 30, accident tilting of urine collection system 10 may also cause reflux of fluid “F” from collection bag 30 back into urine meter 20 through dump ports 22, 23.
Turning now to FIG. 3, a first embodiment of an anti-reflex mechanism according to the present disclosure is shown generally as shielded collection bag 100. Anti-reflux collection bag 100 is substantially similar to collection bag 30 discussed hereinabove, and will only be described as relates to the differences therebetween. Anti-reflux collection bag 100 defines openings 132, 133 for receiving fluid from a urine meter. Anti-reflux collection bag 100 further includes shields 102, 104 partially obstructing openings 132, 133.
Shields 102, 104 may be constructed of vinyl or other suitable material. Shields 102, 104 are sized and dimensioned to cover openings 132, 133. Shields 102, 104 are affixed to the inner surface of collection bag 100. Shields 102, 104 are positioned within collection bag 100 over openings 132, 133. Once in position, shields 102, 104 are attached to collection bag 100 at select points 102a-c, 104a-c about the perimeter of shields 102, 104, respectively. Shields 102, 104 may be attached to collection bag 100 using spot welding, adhesive or other suitable methods. As shown, shields 102, 104 are each attached to collection bag 100 at three points 102a-c, 104a-c, respectively, however, fewer or more attachment points may be used. It is envisioned that attachment points 102a-c, 104a-c may be positioned at any suitable point along overlapping portions of collection bag 100 and shields 102, 104, respectively. By attaching shields 102, 104 at select attachment points 102a-c, 104a-c, the remaining areas of overlap between collection bag 100 and shields 102, 104, namely overlap portions 106, 107 remain unattached to collection bag 100. In this manner, fluid “F” is permitted to flow from a urine meter, around or between attachment points 102a-c, 104c, and into collection bag 100. Overlap portions 106, 107 may be configured to prevent sticking of shields 102, 104, respectively, to collection bag 100. For example, overlap portions 106, 107 may include knobs, ridges or other suitable configurations (not shown) to prevent shields 102, 104 from sealing to bag 100. Overlap portions 106, 107 may instead or further include a film or coating between shields 102, 104 and collection bag 100 to prevent sticking of overlap portions 106, 107.
Shields 102, 104 further include flaps 108, 109, respectively, configured to permit additional flow of fluid “F” from a urine meter into collection bag 100. Flaps 108, 109 are configured to deflect inwardly from the urine meter as fluid “F” enters collection bag 30 while restricting movement of the flaps 108,109 in an outward direction toward the urine meter. In this manner, flaps 108, 109 permit more fluid “F” to drain into collection bag 100 than is permitted to reflux back into the urine meter. Flaps 108, 109 may be positioned in any suitable location about shields 102, 104, respectively. Shields 102, 104 may include any number of flaps 108, 109, respectively, including no flaps at all.
Turning now to FIGS. 4A-C, another embodiment of an anti-reflux mechanism according to the present disclosure is shown generally as anti-reflux guard 200. Anti-reflux guard 200 is configured to be secured within dump port 22 of urine meter 20 (FIG. 1). In this manner, guard 200 would be positioned between urine meter 20 and a collection bag 30 to control the flow of fluid “F” therebetween. A second guard (not shown) is a substantial mirror image of anti-reflux guard 200 and is configured to be secured within dump port 23 of urine meter 20. In addition, openings 202 may be directional valves or one way openings permitting flow only in one direction from the urine meter to collection bag 100.
Guard 200 defines a substantially planar member having a first side 202a and a second side 202b. As will be discussed in further detail below, first side 202a of guard 200 is configured to engage dump port 22 of urine meter 20 (FIG. 1). Guard 200 includes a plurality of horizontally spaced openings 202. Openings 202 define progressively larger internal dimensions or holes from bottom to top. Although shown as circular openings, openings 202 may define any shape. The size and configuration of openings 202 may be varied to control the flow of fluid “F” into collection bag 30 (FIG. 1) and the reflux of fluid “F” back into urine meter 20. The size and configuration of openings 202 may also be varied to control the passing of clots into collection bag 30. In addition, openings 202 may be directional or one way valves or openings permitting flow only in the direction from urine meter 20 to collection bag 100.
Guard 200 may be secured to dump port 22 of urine meter 20 in any suitable manner, including bonding, adhesive and friction or snap-fit. Alternatively, guard 200 may be integrally formed with urine meter 20. As shown, guard 200 is configured to be snap-fit within dump port 22 of urine meter 20. Guard 200 includes snap members 204 and locators 206. Locators 206 are located opposite snap members 204 and are configured to engage a first edge 22a of dump port 22. Snap members 204 are configured to selectively engage a second edge 22b of dump port 22. Guard 200 may include any number of snap members 204 and locators 206. Guard 200 further includes guides 208, 209 configured to align guard 200 within dump port 22. Guides 208, 209 are configured to engage third and fourth edges 22c, 22d, respectively, of dump port 22. Guard 200 may include any number of guides 208, 209. Snap members 204, locators 206 and guides 208, 209 align and maintain guard 200 securely within dump port 22. A seal or sealing substance (not shown) may be placed between guard 200 and urine meter 20 to increase the integrity of the seal therebetween.
Turning now to FIGS. 5A-6, alternate embodiments of anti-reflux guard 200 are shown generally as anti-reflux guards 210, 220. Anti-reflux guards 210, 220 are substantially similar to anti-reflux guard 200, and will only be described in detail as relates to the differences therebetween.
Anti-reflux guard 210 includes first and second sides 210a, 210b and defines a single large opening 212. Opening 212 is covered by a flap 213. Flap 213 is hingedly mounted to second side 210b of guard 210 above opening 212. Flap 213 is sized and dimensioned to extend beyond opening 212. Guard 210 further includes snap members 214, locators 216 and guides 218, 219 configured to retain guard 210 within dump port 23 of urine meter 20 (FIG. 4C). When installed, flap 213 of guard 210 operates to permit the flow of fluid “F” through opening 212 into collection bag 30 (FIG. 1) and prevent the flow, or reflux, of fluid “F” back into urine meter 20. As fluid “F” accumulates within urine meter 20 and encounters opening 212, flap 213 swings away, thereby permitting fluid “F” to enter collection bag 30. As fluid “F” reaches a predetermined level in collection bag 20, the urine contacts the flap 213, in effect, closing the flap 213 by biasing the flap edges extending beyond opening 212 against guard 200. In this manner, fluid “F” is prevent from flowing back into urine meter 20 once it has been drained into collection bag 30 (FIG. 1).
Anti-reflux guard 220 includes horizontal slots 222 that get progressively taller from bottom to top. The size and configuration of horizontal slots 222 may be varied to control the flow of fluid “F” into collection bag 30 (FIG. 1) and the reflux of fluid “F” back into urine meter 20. The size and configuration of horizontal slots 222 may also be varied to control the passing of clots into collection bag 30.
With reference now to FIGS. 7A-E, yet another embodiment of an anti-reflux mechanism according to the present disclosure is shown generally as collection bag insert 300. Insert 300 is configured to be received within a collection bag 30a. Collection bag 30a and insert 300 are configured for use with urine meter 20 and other suitable urine meters. It is envisioned that insert 300 may be modified for use with urine meters of alternative configurations, including urine meters with only a single dump port.
Insert 300 includes backboard 302 and a pair of flanges 304, 306 extending from a first surface 303a of backboard 302. Flanges 304, 306 may be integrally formed with backboard 302, or instead may be fixedly secured to backboard 302 using adhesive, boding or other suitable technique. Backboard 302 defines a substantially planar base having a generally “T” shaped configuration. Flanges 304, 306 are located on a horizontal portion 302a of backboard 302 and define openings 304a, 306a. Flanges 304, 306 are configured to engage dump ports 22, 23, respectively, of urine meter 20. Insert 300 further includes ribs 308 fainted on a second surface 303b of backboard 302 and extending along vertical portion 302b thereof. As will be discussed below, when insert 300 is received with collection bag 30a, ribs 308 form channels 309 between backboard 302 and collection bag 30a. 
In use, collection bag 30a, including insert 300 is secured to urine meter 20 by any suitable method. Flanges 304, 306 may be configured to extend from collection bag 30a and be received with dump ports 22, 23 (FIG. 1), respectively, of urine meter 20. Alternatively, flanges 304, 306 may be configured to be positioned flush against dump ports 22, 23, respectively, of urine meter 20. Once collection bag 30a is secured to urine meter 20, fluid “F” (FIG. 2) may drain from urine meter 20 into collection bag 30a. Fluid “F” drains out of dump ports 22, 23 of urine meter 20 into openings 304a, 306a of flanges 304, 306. Fluid “F” drains from openings 304a, 306a between second side 303b of backboard 302 and collection bag 30 through channels 309 formed by ribs 308. The configuration of insert 300 reduces the amount of fluid “F” that may reflux back into urine meter 20.
Although the illustrative embodiments of the present disclosure have been described herein with reference to the accompanying drawings, it is to be understood that the disclosure is not limited to those precise embodiments, and that various other changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the disclosure.

## Claims

1. A urine collection system, which comprises:
a urine meter having a volume to accommodate urine therein, the urine meter defining a dump port;
a collection member connected to the urine meter and defining at least a first opening for receiving urine from the urine meter;
a backboard disposed in the collection member and defining with the collection member at least one channel; and
a flange extending from the backboard and configured to engage the dump port, the flange defining an opening configured to fluidly communicate the at least one channel with the dump port of the urine meter.

2. The urine collection system according to claim 1, wherein the backboard includes ribs, the ribs defining the at least one channel therebetween to permit urine to flow.

3. The urine collection system according to claim 2, wherein the urine meter defines a second dump port and the backboard includes a second flange extending into the second dump port, the second flange configured to fluidly communicate the at least one channel with the second dump port.

4. The urine collection system according to claim 1, wherein the backboard define a substantially “T” shaped planar member.

5. The urine collection system according to claim 2, wherein the backboard includes a first side and a second side, wherein the flange extends from the first side of the backboard, and wherein the ribs extend from the second side of the backboard.

6. The urine collection system according to claim 1, wherein the backboard is configured reduces the amount of fluid that flows from the collection member into the urine meter.

7. A urine collection system, which comprises:
a urine meter having a volume to accommodate urine therein, the urine meter defining a dump port;
a collection member connected to the urine meter having and defining at least a first opening for receiving urine from the urine meter;
a backboard disposed in the collection member and defining with the collection member at least one channel; and
a flange extending from the backboard and flush with the dump port, the flange configured to fluidly communicate the at least one channel with the dump port of the urine meter,
wherein the backboard includes ribs, the ribs defining the at least one channel therebetween to permit urine to flow, and
wherein the backboard includes a first side and a second side, wherein the flange extends from the first side of the backboard, and wherein the ribs extend from the second side of the backboard.

8. The urine collection system according to claim 7, wherein the ribs are integral to the backboard.

9. A urine collection system, which comprises:
a urine meter having a volume to accommodate urine therein, the urine meter defining a dump port;
a collection member connected to the urine meter having an inner and outer surface and defining at least a first opening for receiving urine from the urine meter;
a backboard disposed in the collection member and defining with the inner surface at least one channel; and
a flange extending from the backboard, the flange configured to engage the dump port and fluidly communicate the at least one channel with the dump port of the urine meter,
wherein the urine meter defines a second dump port and the backboard includes a second flange configured to engage the second dump port, the second flange configured to fluidly communicate the at least one channel with the second dump port.

10. The urine collection system according to claim 9, wherein the backboard includes ribs, the ribs defining the at least one channel therebetween to permit urine to flow.

11. The urine collection system according to claim 10, wherein the ribs are secured to the backboard using an adhesive.