Patent Application
20130081965
The present invention relates to medical waste disposal containers and lids for such containers, particularly containers for used sharp medical devices, which may require temporary and permanent closure.
The safe and efficient disposal of sharp medical devices such as surgical knives, blades, hypodermic needles and the like is a problem for medical and other healthcare facilities. Disposable containers have been developed in recent years which provide a reasonably high degree of security for disposable sharps articles and materials from hospitals and clinics. Many of these articles, such as needles and surgical blades known as sharps, and other similar articles and materials, must be disposed of in a manner to keep them out of the hands of unauthorized persons and to keep them from being reused.
The containers are normally designed to prevent the removal of materials from the container under ordinary circumstances until permanently closed. Commonly used Horizontal Entry Opening containers, which accommodate a counter-balance door restrict human access to the contents of the container by creating a torturous path when a person attempts to put their hand into the container. Unfortunately, this same restricted access can prohibit the disposal of certain objects through the opening. Any object disposed of must impact the counter-balanced door and the weight of the disposed item will rotate the door moving it out of the opening and allowing the item to drop into the container. This creates an opportunity for very light, unusually shaped or sticky items to become hung up on the door warranting additional manipulation from the user to finish the disposal of the item increasing the risk of danger to the user from contamination or needle sticks.
Accordingly, there is an ongoing need in the art for containers which restricts human access to the contents and provides an opening of sufficient size to allow disposal of large or oddly shaped items.
One or more embodiments are directed to waste containers comprising a base and a lid assembly. The base has a bottom wall, a side wall extending upwardly from the bottom wall and defining a receptacle for receiving medical waste. The lid assembly includes a lid body configured for assembly to the base and a cap portion. The cap portion is connected to the lid body and covers an opening in the lid body. The opening being sized to accept medical waste and restrict access to prevent individuals from reaching into the waste container through the opening. A tether slidably connects the cap portion to the lid body. A slot is in the lid body to permit slidable movement of the tether through the slot such the cap can be moved from a resting position such that the opening is configured for receiving waste to a closed position such that the cap portion covers the opening. In some embodiments, the cap portion and tether are integrally formed. In specific embodiments, the lid assembly is made of a thermoplastic material.
In some embodiments, the opening is located in a forward portion of the lid body and the slot is located in a rearward portion of the lid body. The tether engages the slot such that the cap portion is permitted to move forwardly and rearwardly. In detailed embodiments, the lid body includes a raised surface extending from an upper surface of the lid body that engages the cap portion when the cap portion is in the resting position. In specific embodiments, the cap portion includes a recess configured to engage the raised surface. In detailed embodiments, the forward portion and the rearward portion are tilted relative to each other.
In some embodiments, the slot is located adjacent the raised surface. In detailed embodiments, the slot is located within the raised surface. In specific embodiments, the raised surface defines a notched area, and the slot is located within the notched area.
In one or more embodiments, the opening is surrounded by a raised peripheral lip extending from an upper surface of the lid body, and the cap portion includes a peripheral channel to engage the raised peripheral lip. In detailed embodiments, the cap portion includes at least a pair of locking tabs and lid body includes at least a pair of slits positioned to accept the locking tabs to lock the cap portion in a closed position. In specific embodiments, the locking tabs include radially projecting fins sized to provide an interference fit when sliding through the slits into the closed position and prevent removal of the cap portion from the lid body.
Additional embodiments of the invention are directed to waste container lid assemblies including a lid body configured for assembly to a container base. The waste container lid assembly comprises a cap portion connecting to the lid body that covers an opening in the lid body, the opening located in a forward portion of the lid body and sized to accept medical waste and restrict access to prevent individuals from reaching into the waste container through the opening. A tether engages the slot and slidably connecting the cap portion to the lid body, permitting the cap portion to move forwardly and rearwardly. A slot located in a rearward portion of the lid body to permit slidable movement of the tether through the slot such the cap can be moved from a resting position such that the opening is configured for receiving waste to a closed position such that the cap portion covers the opening.
In some embodiments, the lid body includes a raised surface extending from an upper surface of the lid body that engages the cap portion when the cap portion is in the resting position. In detailed embodiments, the cap portion includes a recess configured to engage the raised surface. In specific embodiments, the raised surface defines a notched area, and the slot is located within the notched area.
In some embodiments, the opening is surrounded by a raised peripheral lip extending from an upper surface of the lid body, and the cap portion includes a peripheral channel to engage the raised peripheral lip. In detailed embodiments, the cap portion includes at least a pair of locking tabs and lid body includes at least a pair of slits positioned to accept the locking tabs to lock the cap portion in a closed position. In specific embodiments, the locking tabs include radially projecting fins sized to provide an interference fit when sliding through the slits into the closed position and prevent removal of the cap portion from the lid body.
The various embodiments and aspects of the invention described here can be employed individually or in conjunction.
Before describing several exemplary embodiments of the invention, it is to be understood that the invention is not limited to the details of construction or process steps set forth in the following description. The invention is capable of other embodiments and of being practiced or being carried out in various ways.
Embodiments of the invention are directed to medical waste container tops and closures with a redesigned access opening which fits existing sharps collector bases for a patient room sharps collector. The closure of various embodiments is retained to the top via a tether near, but not over, the opening allowing unobstructed access to the opening during use. The top, with closure, may be snapped onto a base which is then placed into a patient room wall mounted cabinet or bracket. The opening is accessible for one handed disposal of sharps and medical waste during normal use. After the collector is full, the closure is snapped and locked over the opening for disposal.
Embodiments of the invention are intended for vertical disposal of sharps waste as opposed to horizontal disposal. For example, a syringe can be disposed of by dropping the syringe (e.g., point first) into the collector as opposed to a horizontal orientation as in alternate designs. The smaller open vertical entry design restricts human access to the contents by having a reduced opening size large enough for disposal of sharps and medical waste, but small enough to prohibit the insertion of hands.
The straight through design of the vertical entry opening allows for the free fall disposal of items when disposed of into the container. Items such as blood collection units with tubing attached can be fed into the opening and dropped without the need for additional manipulation from the user. By eliminating the horizontal entry counter-balanced door and utilizing the straight through vertical entry, there is nothing present which may impede disposal of certain items. Many users have higher disposal rates of unusually shaped devices and need to be able to dispose of the items in a consistent and safe manner.
The present invention pertains to a waste container lid and waste containers including such lids.
The lid assembly 100 is composed of two main parts, a lid body 110 and a cap portion 140. The cap portion 140 is connected to the lid body 110 and, in one position, covers an opening 112 in the lid body 110. The opening 112 is sized to accept medical waste and restrict access to prevent individuals from reaching into the waste container through the opening 112. The opening 112 can be any suitable size or shape. For example, the opening 112 shown in the Figures is oval shaped. In various embodiments, the opening 112 is round, oval, square, rectangular, oblong, trapezoidal, rhomboid, rectangular with rounded corners. It should be understood that these shapes are merely illustrative of possible openings and that other shapes may be employed.
The lid body 110 and the cap portion 140 are connected by a tether 150. The tether 150 can be integrally formed with the cap portion 140, as shown in
In the resting position 116 (see
In some embodiments, the opening 112 is located in a forward portion 120 of the lid body 110 and the slot 114 is located in a rearward portion 122 of the lid body 110. Stated differently, the opening 112 is a hole through the major plane of the forward portion 120 and the slot is an elongate hole in the major plane of the rearward portion 122 of the lid body 110. The tether 150 engages the slot 114 such that the cap portion 140 is permitted to move forwardly and rearwardly along path 113. In detailed embodiments, moving the cap portion 140 from the resting position 116 to the closed position 118 requires substantially only forward movement. As used in this specification and the appended claims, the term “substantially only forward movement” means that little or no side to side movement of the cap portion 140 is required to move from the resting position 116 to the closed position 118, or to move from the rearward portion 122 to the forward portion 120.
The forward portion 120 and the rearward portion 122 can be substantially coplanar, meaning that the front and back are approximately flat, or tilted relative to each other.
In some embodiments, the lid body 110 includes a raised surface 124 extending from an upper surface 126 of the lid body 110. Stated differently, the raised surface 124 is a portion that extends above the major plane of the lid body 110. In some embodiments, the raised surface 124 extends above the major plane of the rearward portion 122 of the lid body 110. The raised surface 124 can engage the cap portion 140 when the cap portion 140 is in the resting position 116. In detailed embodiments, as shown in
In the detailed embodiments shown in
The slot 114 can be located adjacent the raised surface 126 or within the raised surface 124. For example, the slot can be at the base of the raised surface so that the slot is on the upper surface 126 of the lid body 110. In detailed embodiments, the slot is located on a side wall of the raised surface 124 and not on the upper surface of the lid body 110. In specific embodiments, as seen in the Figures, the raised surface 124 defines a notched area 128 and the slot 114 is located within the notched area 128.
Referring to
As shown in
The base (waste container) and the lid assembly of one or more embodiments are molded from thermoplastic materials. In detailed embodiments, the lid assembly 110 and base 200 are separate parts which can be permanently attached. As used in this specification and the appended claims, the term “permanently attached” means that the lid assembly cannot be easily removed from the base without specific tools designed for the purpose or without causing damage to either the base or lid assembly. Suitable structures for permanently attaching the lid assembly 110 to the base 200 include, but are not limited to, protrusions 206 on an upper portion of the base 200 which fit into matching openings 136 in the lid assembly 110.
Reference throughout this specification to “one embodiment,” “certain embodiments,” “one or more embodiments” or “an embodiment” means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrases such as “in one or more embodiments,” “in certain embodiments,” “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily referring to the same embodiment of the invention. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the method and apparatus of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention include modifications and variations that are within the scope of the appended claims and their equivalents.
