The present invention relates generally to assist handles, and more particularly to beds, such as hospital beds, long-term care beds, nursing home beds, invalid beds, and the like, with an assist handle for aiding in the maneuvering about, ingress to, and egress from a bed.
Many hospitals, nursing homes, and other patient care facilities provide assist handles and/or guard rails on a variety of patient-supporting platforms, such as patient beds, stretchers, examination tables, and the like. Assist handles are typically associated with beds to aid users, such as the elderly or infirm, in entering and exiting the bed, as well as maneuvering around the bed. Some assist handles also function as guardrails to prevent the bed occupant from inadvertently falling out of the bed.
Early designs used a rigid frame member, typically in the nature of aluminum or steel tubing, that was bolted or welded directly to the bed frame. While these devices serve the general purpose for which they are intended, such designs hinder access to the bed occupant making it difficult to assist or treat the occupant. In addition, some bed occupants react adversely to side rails because of their restrictive appearance. Permanent-fixture designs also cause considerable difficulty during the changing of sheets and blankets on the bed.
Subsequent improvements include side rails and assist bars that are removably mounted or clamped to the side of the bed frame. One particular design comprises a single-piece tubular side-rail with U-shaped brackets that allow the side-rail to be lifted off the bed frame to free up movement of the occupant to and from the bed. In alternative designs, clamps are substituted for the brackets to provide a sturdier interface. Unfortunately, for the elderly or infirm, neither of these designs is practical as the rail is often too heavy and too cumbersome to be easily attached to and removed from the bed frame.
Accordingly, retractable bedrail and assist bar devices were developed so that the device could be easily stowed in order to render the top surface of the bed more easily accessible. Various constructions provide movable rails and handles that rotate around a single axis between a raised position, in which the rail/handle extends vertically above the surface of the bed mattress, and a lowered position, in which the rail/handle is stowed at a distal end of the bed or lowered to a position below the mattress.
Various advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings.
While the invention is susceptible to various modifications and alternative forms, specific embodiments are shown by way of example in the drawings and will be described in detail herein. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and will herein be described in detail representative embodiments of the invention with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the broad aspect of the invention to the embodiments illustrated. To that extent, elements and limitations that are disclosed, for example, in the Figures, Abstract, and Description of the Illustrative Embodiments, but not explicitly set forth in the claims, should not be incorporated into the claims, singly or collectively, by implication, inference or otherwise.
The present invention will be described herein in the context of an assist handle assembly for aiding in the maneuvering about, ingress to, and egress from a bed used in a healthcare facility. However, the present invention is by no means limited to this particular application. By way of example, and not limitation, the concepts of the present invention may just as easily be incorporated into other support platforms, such as examination tables and chairs, hospital beds, nursing home beds, invalid beds, and the like. In addition, the drawings presented herein are not to scale and are provided purely for instructional purposes. As such, absent explicit claim language to the contrary, the individual and relative dimensions and orientations shown in the drawings are not to be considered limiting. Finally, a designation of a constituent part with a numerical preface (e.g., first arm, second arm, third arm, etc.) is provided purely for explanatory purposes and ease of clarification. As such, the use of such designations in the claims is not intended as limiting and therefore does not limit that particular element to the corresponding element in the specification or drawings utilizing the same numerical preface.
Referring to the drawings, wherein like reference numerals refer to like components throughout the several views,
One or both of the attachment arms 18, 20 may be selectively repositionable along the mounting frame 12 such that the assist handle assembly 10 can functionally attach to support platforms of varying configurations. In the embodiment shown in
Referring to both
The assist handle assembly 10 is provided with a pair of collapsible or foldable support arms, namely first and second support arms 34 and 36, respectively. The first and second support arms 34, 36 are exemplified in the drawings as elongated, square tubes with open longitudinal ends. In this instance, end plugs (indicated at 54 in
Each of the support arms 34, 36 is pivotably attached to the mounting frame 12 at a different location to rotate or swivel about a distinct axis. According to the exemplary configuration illustrated in
The support arms 34, 36 pivot about their respective axes A1, A2 from a raised or fully-erect position (depicted in
A handle 44 is attached to the distal ends of the support arms 34, 36. The handle 44 illustrated in
A first end of the handle 44 is pivotably attached to a first, distal end of the first support arm 34—e.g., via bracket 50 and rivet 52, whereas the second end of the handle 44 is pivotably attached to a first, distal end of the second support arm 36—e.g., via bracket 50 and rivet 52. Through these pivot joints, the handle 44 is able to maintain a concave-down orientation, with the apex of the semicircular body 46 pointing upwards, while the first and second support arms 34, 36 pivot back-and-forth between respective raised (
The assist handle assembly 10 may be provided with one or more rotation stops that limit the range of rotation (i.e., the arcuate length between respective raised and lowered positions) of the first and second support arms 34, 36. By way of non-limiting example, a first rotation stop 56 is attached to or integrally formed with the tubular cross bar 26 of the mounting frame 12. As best seen in
Continuing with the above example, a second rotation stop 58 is attached to or integrally formed with the cross-bar leg 30 of the mounting frame 12. As best seen in
A locking device may be provided to securely fasten the assist handle assembly 10 in the raised and/or lowered positions. In one exemplary configuration, a locking pin 60 is attached to one of the support arms 34, 36, and configured to engage the mounting frame 12 to thereby retain the support arms 34, 36 in a predetermined position or orientation. In
The locking pin 60 is selectively movable between an engaged position, whereat the pin 64 protrudes a predetermined distance from an inner surface of the first support arm 34 such that the locking pin 60 can be received inside the lock slot 70 of the mounting frame 12, and a disengaged position, whereat the pin 64 is sufficiently retracted such that the locking pin 60 is displaced from the lock slot 70 of the mounting frame 12. The locking pin 60 may be provided with a biasing member, such as compression spring 68, which biases the pin 64 into the engaged position. Moreover, a ramped surface 72 may be attached to (e.g., via cross screws 74 of
Exemplary Alternate Embodiments
The following exemplary embodiments of the invention are not intended to represent each embodiment, or every aspect, of the present invention. The above features and advantages, and other features and advantages of the present invention, will become more readily apparent from the following examples.
According to one embodiment of the present invention, an assist handle assembly for a support platform is provided. The assist handle assembly includes a mounting frame configured to attach to the support platform. A first support arm is pivotably attached to the mounting frame to rotate about a first axis. The first support arm rotates between a first position and a second position. A second support arm is pivotably attached to the mounting frame to rotate about a second axis, which is different from the first axis. The second support arm rotates between a third position and a fourth position. The first and second support arms remain substantially parallel while rotating between respective positions.
In accordance with one optional facet of the present invention, the assist handle assembly also includes a handle that attaches a first end of the first support arm to a first end of the second support arm. The handle may comprise an arcuate body which is configured to maintain a concave-down orientation while the first and second support arms pivot between respective positions. In one exemplary configuration, a first end of the handle is pivotably attached to the first end of the first support arm, whereas a second end of the handle is pivotably attached to the first end of the second support arm.
In accordance with another optional facet, the handle extends above the upper support surface of the support platform when the first and second support arms are in the first and third positions, respectively. In contrast, the handle lies below the upper support surface of the support platform when the first and second support arms are in the second and fourth positions, respectively.
As part of another optional facet of the present invention, the assist handle assembly includes at least one rotation stop attached to the mounting frame. Each rotation stop is configured to obstruct the rotational path of at least one of the first and second support arms.
According to yet another aspect, the assist handle assembly includes one or more adjustable attachment arms. Each adjustable attachment arm is configured to connect the mounting frame to the support platform. The adjustable attachment arm is selectively repositionable along the mounting frame to attach to support platforms of varying configurations.
As part of yet another aspect of the present invention, the assist handle assembly includes a locking pin. The locking pin is attached to the first (or second) support arm, and is configured to engage the mounting frame and thereby retain the first (and/or second) support arm in the first (or third) position. In one optional configuration, the locking pin is movable between an engaged position and a disengaged position. This locking pin may include a biasing member that biases the locking pin into the engaged position. In addition, the mounting frame may include a ramped surface that is configured to urge the locking pin into the disengaged position.
In accordance with another optional facet, the first support arm collapses on top of the second support arm when transitioning from the first position to the second position. Optionally, the first and second support arms are substantially vertical when in the first and third positions, respectively, and generally horizontal when in the second and fourth positions, respectively.
According to another embodiment of the present invention, a bed assembly is presented. The bed assembly includes a bed frame with a mounting frame attached thereto. A first support arm is pivotably attached to the mounting frame at a first location. The first support arm rotates about a first axis between raised and lowered positions. A second support arm is pivotably attached to the mounting frame at a second location. The second support arm rotates about a second axis between raised position and lowered positions. A handle is attached to the first and second support arms. The first and second support arms remain substantially parallel while pivoting between respective raised and lowered positions.
According to one optional facet, the handle comprises a semicircular body with a first end thereof pivotably attached to a first end of the first support arm and a second end thereof pivotably attached to a first end of the second support arm such that the handle maintains a concave-down orientation when the first and second support arms pivot between respective raised and lowered positions.
According to another optional facet, the bed assembly includes first and second rotation stops. The first rotation stop is attached to the mounting frame at a first location, obstructing the first support arm from rotating past the raised position. The second rotation stop, on the other hand, is attached to the mounting frame at a second location, obstructing the second support arm from rotating past the lowered position.
According to yet another optional facet, the bed assembly includes a locking pin that is attached to the first or the second support arm. The locking pin engages the mounting frame and thereby retains the first and second support arms in their respective raised positions. In one exemplary configuration, the locking pin is movable between an engaged position, whereat the locking pin is engageable with the mounting frame, and a disengaged position, whereat the locking pin is not engageable with the mounting frame. The locking pin may include a biasing member that biases the locking pin into the engaged position. The mounting frame may include an optional ramped surface configured to urge the locking pin into the disengaged position.
According to even yet another optional facet, the first and second support arms are spaced apart and substantially vertical when in respective raised positions, whereas the first and second support arms are generally horizontal and touching when in respective lowered positions.
In accordance with yet another embodiment of the invention, a long-term care bed assembly is provided. The long-term care bed includes a bed frame and an assist handle assembly. The assist handle assembly includes a mounting frame that is attached to the bed frame. A first support arm is pivotably attached to the mounting frame at a first location to rotate about a first axis between raised and lowered positions. Likewise, a second support arm is pivotably attached to the mounting frame at a second location to rotate about a second axis between raised and lowered positions. The long-term care bed assembly also includes a handle with an arcuate body. A first end of the handle body is pivotably attached to a first end of the first support arm and a second end of the handle body is pivotably attached to a first end of the second support arm such that the handle maintains a concave-down orientation while the first and second support arms pivot between respective raised and lowered positions.
While the best modes for carrying out the present invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention within the scope of the appended claims.
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Number | Date | Country | |
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20110185507 A1 | Aug 2011 | US |