Surgery – Means and methods for collecting body fluids or waste material – Material collector or receptacle having attaching means to...
Reexamination Certificate
2000-07-31
2002-07-23
Weiss, John G. (Department: 3761)
Surgery
Means and methods for collecting body fluids or waste material
Material collector or receptacle having attaching means to...
CD24S122000, CD24S123000, C141S313000
Reexamination Certificate
active
06423041
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates generally to a carrier for holding a urinary drainage bag, and in particular to a carrier that provides a free-standing support for a urinary drainage bag permitting increased mobility for the user.
(2) Description of the Prior Art
Flexible urinary drainage bags, also known as catheter bags, are commonly used both within and outside a hospital environment by post-operative patients on a temporary basis during recovery, and over the longer term by individuals suffering from urological disorders. Generally, these bags are connected by a drainage tube that has a proximal end attached to an inserted catheter, and a distal end that extends into the upper end of the drainage bag. A collection tube extends from the lower end of the drainage bag for use in emptying the bag.
These bags work well for their intended purposed when used by immobile patients who are confined to a bed or wheelchair. Under such circumstances, the bag is supported on a hook below the level of the patient, so that urine drains under gravity into the bag. However, unless a convenient hook or other hanger is readily available, drainage bags are a substantial deterrent to mobility, and an inconvenience to users that would otherwise be able to move about and perform many normal activities.
The prior art has attempted to address this problem by devising various kinds of flexible urinary drainage bags that are supported by, or form a part of a carrier that is intended to support the bag on a level surface. These devices are said to enable a user to move the carrier and bag to a given location and set the bag on the floor or other surface below the catheter position, enabling the user to function normally up to the length of the drainage tube. In practice, however, these prior art devices include inherent design defects that limit their usefulness.
For example, U.S. Pat. No. 4,126,135 to Hinman, Jr. describes a self-standing drainage bag structure in which a specially designed, flexible drainage bag is mounted between two rigid leaves that are joined to each other at their top edges, with the lower edge of the drainage bag extending below the lower edges of the leaves. A handle extends upwardly from the top edges of the leaves so that the structure can be carried from place to place.
When the Hinman, Jr. structure is lowered onto a horizontal surface, such as the floor, the lower edge of the bag first engages the floor, pushing the bag contents into the area between the leaves. As a result, the leaves expand until the lower edges of the leaves engage the floor. Thus, in the supported position, a large part of the bag's outer surface, as well as the collection tube, is physically in contact with the horizontal surface.
U.S. Pat. No. 4,447,939 to Taylor describes a drainage bag stand that is formed of a plurality of connected shaped rods, including a bent upper rod that forms a handle, a pair of downwardly extending arms that are joined by a back plate, and a pair of legs that extend horizontally outward from the lower ends of the arms. A horizontal reinforcing rod at the upper edge of the reinforcing plate includes hooks that are used to attach a specially designed, flexible drainage bag by inserting the hooks through slots in an attachment strip along the upper edge of the bag.
U.S. Pat. No. 4,449,969 to Schweitzer also describes a frame designed to support a flexible drainage bag on a horizontal surface. The rectangular frame is comprised of an elongated base with posts that extend upwardly from the ends of the base. A horizontal frame member extends between the upper ends of the posts. The frame is sized to accommodate a specially designed, flexible drainage bag of rectangular construction with an attachment slot at each corner. Bosses extend outwardly from each corner of the frame to project into the attachment slots. An elongated support leg with feet at opposed ends is pivotally joined at its center to the center of the base, and is movable between a closed position and an open position, whereby the leg is perpendicular to the base, to support the stand on a horizontal surface.
U.S. Pat. No. 4,496,354 to Steer et al. describes a urine drainage bag and support stand. The frame is formed of a foldable sheet comprised of a back wall, opposed wings that extend from the side edges of the back wall, and a drip tray section formed of foldable bottom, front and side walls. A flexible drainage bag is carried on the front surface of the back wall. The bag is comprised of a rigid back wall that is laminated to the frame back wall, and a flexible front wall, together forming a urine drainage bag that is supported above the drip tray when the sheet is folded into the support frame structure.
All of the above structures, while purporting to provide a stable urine drainage bag stand that facilitates mobility, have one or more disadvantages or design faults that limit their utility. In all instances, a specially designed bag construction is required for use with the stand. In many instances, the bag is positioned so that the bag can be damaged by striking an object during movement from one place to another. Cleaning of the structures in difficult, and bags cannot be readily attached or detached. In a structure like that shown in Hinman, Jr., the bag physically rests on the surface, creating unsanitary conditions, and potential damage to the bag.
With the exception of the Steer et al. structure, none of the designs provide for a means to capture urine in the event of a spill. Even Steer et al. provides only a limited solution to the problem by suggesting a tray that can only be used with a bag that is integrally constructed with the stand. Moreover, since the tray is formed by joining folded blank sections with tabs, its usefulness in holding urine is doubtful.
Thus, there is still an existing need for a stand or carrier that can be used to support a urine drainage bag on horizontal surface, permitting the bag to be carried from one place to another, thereby facilitating the user's mobility.
SUMMARY OF THE INVENTION
The present invention addresses this need by providing an improved urine drainage bag carrier or caddy that can be used to support a drainage bag while the bag is attached by as tube to a user. The carrier enables the bag to be easily carried, and provides a stable support when the bag is placed on a horizontal surface, such as a floor, at the user's destination. At the same time, the carrier protects the bag from damage, and provides means for collecting any urine that might be spilled from the bag or attached tubes.
The carrier described herein is designed for use with a flexible urine drainage bag comprised of first and second flexible plastic sheets that are joined at their periphery, e.g., by heat sealing, to define a urine collection chamber. A drainage tube attachment is fitted to the top of the bag, while a collection tube attachment is fitted to the bottom of the bag. The bag, which is preferably formed of rectangular sheets, also includes an upwardly extending flap that includes a hook-receiving opening to attaching the bag to the stand. The bag has a given width, height, and filled thickness that is relevant to the sizing of the carrier.
The carrier or stand is generally comprised of a generally rectangular frame comprised of a base or bottom wall, first and second opposed side walls that extend upwardly from the opposed ends of the bottom wall, and a top wall that extends between the upper edges of the side walls. A handle is joined to the upper surface of the top wall. Parallel front and back walls extend upwardly from the front and back edges of the bottom wall and are joined to lower sections of the side walls to define a urine drip collection tray in the lower part of the carrier. Feet may be attached to the lower part of the carrier framework to improve stability. A bag attachment, preferably in the from of a hook, extends downward from the top wall between the side walls to attach a drainage bag.
Pref
,MacCord Mason PLLC
Bogart Michael
Weiss John G.
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