Fixed bed extension fitting

Abstract

An extension fitting for a sickbed includes an extension panel having a peripheral edge defining a top surface and a bottom surface for supporting a patient and a plurality of apertures extending through the top surface and the bottom surface. The plurality of connecting blocks each include a top block surface spaced apart from the bottom block surface. An engagement profile is between the top block surface and the bottom block surface, the engagement profile sized to couple to the movable beam. An opening extends through the top block surface, and each of a plurality of fastening members is configured to be inserted through one of the holes of the extension plate and the opening of one of the plurality of connecting blocks.

Description

Technical Field

[0001] This disclosure generally relates to a hospital bed with accessories, and more specifically to a bed extension accessory that increases the patient support surface of the hospital bed. Background Technology

[0002] In a medical setting, patients are often confined to their beds for extended periods. Hospital beds are typically designed with comfort and mobility as primary considerations. For example, beds frequently need to be moved within the medical environment based on patient needs, scheduled procedures, room availability, and other factors. Moving beds between busy corridors and doorways in a medical setting can be arduous. More specifically, beds are bulky because they must be large enough to comfortably support patients of varying widths and lengths.

[0003] Therefore, this disclosure generally relates to a bed extension accessory that increases the patient support surface of a hospital bed. In this way, the bed can be adjusted in size to facilitate the mobility of most patient body types, but can be extended when the patient support surface is insufficient for a particular patient. Summary of the Invention

[0004] According to one aspect of this disclosure, an extension accessory for a hospital bed includes a first movable beam and a second movable beam configured to attach to the hospital bed and movable between a retracted position and an extended position. The first movable beam defines a first longitudinal groove and includes at least one first concave slot. An actuation assembly includes an actuation body extending through the first longitudinal groove between a first locking body and a lever. The actuation body is movable between a locked position and an unlocked position, wherein in the locked position, the first locking body is located in at least one first concave slot to secure the first movable beam against movement, and wherein in the unlocked position, the actuation body is configured to be moved by engagement with the lever, and the first locking body is located outside the at least one first concave slot, thereby allowing movement of the first movable beam. At least one connecting block includes an engagement profile sized to insert into the first longitudinal groove and prevent movement of the actuation body. An extension plate is connectable to at least one connecting block.

[0005] According to another aspect of this disclosure, an extension fitting for a hospital bed includes an extension plate having peripheral edges defining a top surface and a bottom surface for supporting a patient, and a plurality of holes extending through the top and bottom surfaces. A plurality of connecting blocks each include a top block surface spaced apart from a bottom block surface. An engagement profile is located between the top and bottom block surfaces, the engagement profile being sized to be coupled to a movable beam. Openings extend through the top block surfaces, and a plurality of fastening members are each configured to be inserted through one of the holes in the extension plate and one of the openings in the plurality of connecting blocks.

[0006] According to another aspect of this disclosure, a hospital bed includes a patient support surface extending between a headboard and a footboard. A pair of fixed beams are located below and coupled to the patient support surface. A pair of movable beams are each movably coupled to one of the fixed beams and movable between a retracted position and an extended position. Each of the movable beams defines a longitudinal groove and at least one recessed slot. An actuation assembly includes an actuation body extending through a longitudinal groove between a pair of locking bodies spaced apart by a lever. The actuation body is movable between a locked position and an unlocked position, wherein in the locked position, the locking body is located in at least one recessed slot to secure the pair of movable beams to prevent movement, wherein in the unlocked position, the actuation body is configured to be moved by engagement with a lever, and the locking body is located outside at least one recessed slot, thereby allowing movement of the pair of movable beams relative to the fixed beams. An extension plate is selectively coupled to the movable beams.

[0007] According to another aspect of this disclosure, a connecting block for an extension fitting for a hospital bed includes a top block surface defining an opening for receiving fasteners. A bottom block surface is spaced apart from the opening. An engagement profile is located between the top and bottom block surfaces, and the engagement profile includes a beam recess sized to accommodate the upper edge of a movable beam.

[0008] These and other features, advantages and objectives of this disclosure will be further understood and appreciated by those skilled in the art upon reference to the following description, claims and drawings. Attached Figure Description

[0009] In the attached diagram:

[0010] Figure 1 This is a perspective view of the front, left side, and upper part of a hospital bed with extension accessories according to one aspect of this disclosure;

[0011] Figure 2 This is a perspective view of the front, left, and upper sides of an extension accessory for a hospital bed according to one aspect of this disclosure;

[0012] Figure 3 This is a perspective view of the front, left side, and lower part of a hospital bed with extension accessories according to one aspect of this disclosure;

[0013] Figure 4 This is a front, left, and lower perspective view of an extension accessory for a hospital bed according to one aspect of this disclosure;

[0014] Figure 5 This is a top view of an extension accessory for a hospital bed according to one aspect of this disclosure;

[0015] Figure 6 This is an enlarged perspective view of the front, left side, and lower part of an extension accessory for a hospital bed according to one aspect of this disclosure;

[0016] Figure 7 This is a front cross-sectional view of a movable beam of an extension fitting that is paired with a fixed beam of a hospital bed, according to one aspect of this disclosure.

[0017] Figure 8 The above perspective view of the insert according to one aspect of this disclosure extends between and connects the movable beam of the extension fitting and the fixed beam of the hospital bed.

[0018] Figure 9 This is a side perspective view of a pair of connecting blocks according to one aspect of the present disclosure, the pair of connecting blocks locking the position of the movable beam of the extension accessory relative to the fixed beam of the hospital bed;

[0019] Figure 10A This is a front outline view of a connecting block according to one aspect of this disclosure, which locks the position of the movable beam of the extension fitting relative to the fixed beam of the hospital bed;

[0020] Figure 10B The following is a rear profile view of a connecting block according to one aspect of this disclosure, which locks the position of the movable beam of the extension fitting relative to the fixed beam of the hospital bed.

[0021] Figure 10C According to a side profile view of a connecting block of one aspect of this disclosure, the connecting block locks the position of the movable beam of the extension fitting relative to the fixed beam of the hospital bed; and

[0022] Figure 11 This is an exploded view of the extension fittings before they are connected to the hospital bed, according to one aspect of this disclosure. Detailed Implementation

[0023] This illustrated embodiment primarily exists in combinations of method steps, systems, apparatuses, and equipment components related to bed extension fittings that increase the patient support surface of a hospital bed. Accordingly, where appropriate, equipment components and method steps have been indicated by conventional symbols in the drawings, showing only those specific details relevant to understanding the embodiments of this disclosure, so as not to obscure the disclosure due to details obvious to those skilled in the art from the description herein. Furthermore, the same reference numerals denote the same elements in the specification and drawings.

[0024] The specific structures and processes shown in the accompanying drawings and described in the following specification are merely exemplary embodiments of the inventive concept defined in the appended claims. Therefore, unless expressly stated otherwise in the claims, the specific dimensions and other physical characteristics relating to the embodiments disclosed herein should not be considered limiting.

[0025] The terms “including,” “comprises,” “comprising,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element introduced by “including one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0026] First refer to Figures 1-5 Reference numeral 10 generally indicates a hospital bed including an extension accessory 12. The extension accessory 12 includes a first movable beam 14A and a second movable beam 14B, both configured to attach to the hospital bed 10 and be movable between a retracted position and an extended position. The first movable beam 14A defines a first longitudinal recess 16A and includes at least one first concave groove 18A. The actuation assembly 20 includes an actuation body 22 (e.g., a wireframe) extending through the first longitudinal recess 16A between a first locking body 24A and a lever 26 (e.g., a handle). The actuating body 22 is movable (e.g., flexible) between a locked position and an unlocked position. In the locked position, the first locking body 24A is located in at least one first recess 18A to secure the first movable beam 14A to prevent movement. In the unlocked position, the actuating body 22 is configured to be moved by engagement with a lever 26 (e.g., deformed by engagement with the lever 26), and the first locking body 24A is located outside the first recess 18A, thereby allowing movement of the first movable beam 14A. Figure 5 At least one connecting block 28 includes an engagement profile 30, sized to fit into the first longitudinal groove 16A and prevent movement (e.g., deformation) of the actuating body 22. Figure 5 The extension plate 32 can be connected to at least one connecting block 28.

[0027] Continue to refer to Figures 1-5Similarly, the second movable beam 14B may define a second longitudinal groove 16B and at least one second concave groove 18B. Therefore, the actuation body 22 may include a second locking body 24B spaced apart from the first locking body 24A on the opposite side of the lever 26. The second locking body 24B is movable between an unlocked position and a locked position by engagement with the lever 26 (e.g., via a patient's hand, foot, etc.). In this way, the first movable beam 14A and the second movable beam 14B can be linearly movable relative to axis A between the retracted position and the extended position. The lever 26 may be defined by a downward bend in the actuation body 22. The actuation body 22 may include a first pivot sleeve 34A pivotally connected to the hole defined by the first movable beam 14A and located on the side of the first locking body 24A opposite to the lever 26. The actuation body 22 may further include a second pivot sleeve 34B, which is pivotally connected to a hole defined by the second movable beam 14B and located on the side of the second locking body 24B opposite to the lever 26. The first pivot sleeve 34A and the second pivot sleeve 34B may be formed by bends in the actuation body 22. In this way, the actuation body 22 may be formed of a wire body (e.g., a single strand of wire), and the first locking body 24A and the second locking body 24B are attached to the wire body. The actuation body 22 may be formed of a material with elastic memory (e.g., spring steel), thereby allowing repeated deformation between the locked and unlocked positions without substantial impact on the material (e.g., permanent deformation).

[0028] exist Figures 1-4In the depicted embodiment, the bed 10 may include a patient support surface 36 extending between a headboard 38 (e.g., a first end) and a footboard 40 (e.g., a second end) spaced apart by a pair of sides 43, each of which may include one or more side panels 44. While the extension fitting 12 is depicted extending the patient support surface 36 along axis A from the footboard 40, it should be understood that the extension fitting 12 may also be used to extend the patient support surface 36 along axis A from the headboard 38, and / or perpendicular to axis A from one or both sides 43 to widen the patient support surface 36. In other words, the extension fitting 12 may be used to extend the length (e.g., between the headboard 38 and the footboard 40) or the width (e.g., between the sides 43) of the patient support surface 36, depending on the patient's size, shape, and condition. In the widening embodiment, the first movable beam 14A, the second movable beam 14B, and the actuation assembly 20 may rotate 90° in either direction opposite to the depicted direction. Similarly, in such embodiments, the extension plate 32 is sized to extend only a portion or substantially all of the length. In embodiments that increase the length, the extension plate 32 is sized to extend only a portion or substantially all of the width. It is further envisioned that in some embodiments, the bed 10 may be configured to increase both width and length. Thus, the described configuration is merely illustrative, and other embodiments may use multiple identical components described throughout the text and / or use the same components described throughout the text in different directions to increase width or length.

[0029] The bed 10 may include a bed frame 46 with one or more wheels 48 (e.g., casters) for moving the bed 10 to various locations within the medical environment. Deflecting wheels 50 may be located near the headboard 38 (e.g., the first end) and / or the footboard 40 (e.g., the second end) to deflect the bed 10 away from walls, objects, and other vertical surfaces in the medical environment. While some components, such as the first movable beam 14A and the second movable beam 14B, are described in pairs herein, a simpler architecture can be achieved using a single movable beam. For example, in an embodiment with increased length, the single movable beam may be located substantially centrally between the sides 43, or in an embodiment with increased width, the single movable beam may be located substantially centrally between the headboard 38 and the footboard 40. Similarly, while some components, such as the first movable beam 14A and the second movable beam 14B, are described in pairs herein, a more robust architecture can be achieved using two or more of these components.

[0030] like Figures 2-4As best depicted, the bed 10 may include a pair of fixed beams 42 located below and connected to the patient support surface 36. Movable beams 14A and 14B are each movably connected to one of the fixed beams 42 and are movable (e.g., linearly) between a retracted position and an extended position. In this way, the movable beams 14A and 14B move relative to the fixed beams 42 via an actuation assembly 20. The relative movement between the fixed beams 42 and the movable beams 14A and 14B may be telescopically assisted by an interlocking rack and pinion drive, slidably assisted by various bearing arrangements, or via other methods and structures. In the depicted embodiment, each of the fixed beams 42 may define opposing longitudinal grooves 52, respectively facing the longitudinal grooves 16A and 16B. The fixed beams 42 may be connected to the patient support surface 36 via supports, welds, fasteners, etc.

[0031] Now refer to Figures 5-8 The movable beams 14A and 14B may each include an insert 54 located in and extending between one of the opposing longitudinal grooves 52 and one of the longitudinal grooves 16A and 16B, thereby facilitating and guiding slidable movement between the fixed beam 42 and the movable beams 14A and 14B. The insert 54 may define at least one first concave groove 18A and a second concave groove 18B. In some embodiments, at least one first concave groove 18A includes a plurality of first concave grooves 18A in series, and at least one second concave groove 18B includes a plurality of second concave grooves 18B in series, which may be aligned with each other to provide multiple locking positions. In this way, the extension plate 32 may include various dimensions associated with the multiple locking positions to provide an extension surface for the bed 10 according to the patient's needs and condition. Figure 6 Ideally depicted, the extension plate 32 may include at least one support beam 53 spanning at least the movable beams 14A, 14B. In some embodiments, the at least one support beam 53 may include a plurality of support beams 53 (e.g., two, three or more). Each of the support beams 53 may be connected to the extension plate 32 via fasteners, adhesives, clamps, combinations thereof, etc. In operation, the support beams 53 can provide rigidity and support to the extension plate 32 and also facilitate connection to at least one connecting block 28.

[0032] In some embodiments, the extension fitting 12 may include two or more extension plates 32 of various sizes associated with multiple locking positions for providing different degrees of extension (e.g., in length or width). Figure 7Ideally depicted, the longitudinal grooves 16A and 16B of the movable beams 14A and 14B may be defined by an upper edge 56 and a lower edge 58. In some embodiments, the movable beams 14A and 14B are generally defined as having a C-shaped cross-section (e.g., a metal extrusion with a C-shaped cross-section). Similarly, the opposing longitudinal groove 52 of the fixed beam 42 may include an upper fixed edge 60 and a lower fixed edge 61. In some embodiments, the fixed beam 42 is generally defined as having a C-shaped cross-section (e.g., a metal extrusion with a C-shaped cross-section). The upper fixed edge 60 may be defined by a downward bend and extend toward the opposing longitudinal groove 52, and the lower fixed edge 61 may be defined by an upward bend and extend toward the opposing longitudinal groove 52. In some embodiments, the movable beams 14A and 14B and the fixed beam 42 may have substantially the same dimensions in cross-section. In some embodiments, at least one top surface of the movable beams 14A and 14B and the fixed beam 42 is substantially planar. In some embodiments, the movable beams 14A and 14B may extend along axis A, and the fixed beam 42 may extend along axis A by a greater distance than the movable beams 14A and 14B.

[0033] Now refer to Figure 7 and Figure 8 The insert 54 may include a first portion 62 located in the fixed beam 42 (e.g., relative to the longitudinal groove 52) and a second portion 64 located in the associated longitudinal grooves 16A, 16B of the movable beams 14A, 14B. In the depicted embodiment, the first portion 62 of the insert 54 may be statically connected to the fixed beam 42, and the second portion 64 may be movable relative to the movable beams 14A, 14B within the longitudinal grooves 16A, 16B. More specifically, the first portion 62 of the insert 54 may be statically connected to the fixed beam 42 via one or more fasteners, brackets, adhesives, welds, interference fits, etc.

[0034] In some embodiments, a first portion 62 of the insert 54 may be slidably connected to a fixed beam 42, and a second portion 64 of the insert 54 may be statically connected to movable beams 14A, 14B via one or more fasteners, brackets, adhesives, welds, interference fits, etc. Alternatively, in some embodiments, the first portion 62 of the insert 54 is movable relative to the fixed beam 42, and the second portion 64 is movable relative to the movable beams 14A, 14B. In such embodiments, a movement limiter (not shown) may be located in the fixed beam 42 and the movable beams 14A, 14B. More specifically, the movement limiter may provide a rigid stop between the fixed beam 42 and the movable beams 14A, 14B between a retracted position and an extended position. For example, the movement limiter may include longitudinal grooves 16A, 16B extending to opposite sides of the insert 54 and posts, recesses, ribs, etc., in (e.g., integrated with or connected to) the opposite longitudinal groove 52. However, the movement limiter may include other types of structures, such as brackets, protrusions, combinations thereof, etc. When the first portion 62 of the insert 54 is movable relative to the fixed beam 42, and the second portion 64 of the insert 54 is movable relative to the movable beams 14A, 14B, the fixed beam 42 and / or the first portion 62 of the insert 54 may define recessed grooves 18A, 18B. It should also be understood that although the movable beams 14A, 14B are depicted as being located internally (e.g., between the fixed beams 42), in some embodiments, the fixed beam 42 may be located internally relative to the movable beams 14A, 14B and function according to the same operating principle described above, but in the opposite direction. Regardless of the orientation of the fixed beam 42 and the movable beams 14A, 14B, the longitudinal grooves 16A, 16B may generally be oriented toward their respective opposing longitudinal grooves 52, which together form a channel for the insert 54.

[0035] Still referencing Figure 7 and Figure 8The first portion 62 of the insert 54 can be connected to the second portion 64 via a bridging portion 66. The first portion 62 can define at least one first portion track 68 (e.g., a pair of first portion tracks 68 that can extend substantially parallel to each other), and the second portion 64 can define at least one second portion track 70 (e.g., a pair of second portion tracks 70 that can extend substantially parallel to each other). The first portion tracks 68 and the second portion tracks 70 can extend from the top surface of the insert 54 and engage with the inner surfaces 74 of the fixed beam 42 and the movable beams 14A, 14B, respectively. An upper recess 76 can be defined by the top surface of the insert 54. For example, the upper recess 76 can be located between one of the second portion tracks 70 and the first portion track 72. The upper recess 76 can receive an upper fixed edge 60 and facilitate relative fixation and slidable movement between the fixed beam 42 and the movable beams 14A, 14B. A lower recess 78 can be defined by the bottom surface of the insert 54. For example, the lower recess 78 can be aligned with the upper recess 76. The lower groove 78 can accommodate the fixed edge 61 and also facilitates the relative fixation and sliding movement between the fixed beam 42 and the movable beams 14A, 14B.

[0036] Each of the second-part tracks 70 may be defined by two track members spaced apart by recesses 18A, 18B. Recesses 18A, 18B may each include one, two, three, four, or more recesses for defining the extension range. One track member of the second-part tracks 70 may be spaced apart from the other track member of the second-part tracks 70 by a distance S less than the width “W” of the first locking body 24A and the second locking bodies 24A, 24B. Figure 7 and Figure 8 In this way, the spacing S between the second portion of the tracks 70 limits the travel path of the first locking body 24A and the second locking body 24B of the actuation assembly 20. The second portion 64 of the insert 54 may define a groove 80 extending along the length of the second portion 64. The groove 80 may be sized to accommodate and guide the actuation body 22 therein. The actuation body 22 may be formed of a metallic material with elastic memory (e.g., spring steel). The actuation body 22 may define a circular cross-section defining a gauge. For example, the gauge diameter of the actuation body 22 may be from about 5 mm to about 10 mm, for example, about 8 mm. The groove 80 may also define a portion of the periphery accommodating the actuation body 22. In some embodiments, the recesses 18A, 18B may also define a portion of the periphery accommodating the first locking body 24A and the second locking body 24B.

[0037] In some embodiments, the insert 54 may be formed of a plastic material, the fixed beam 42 may be formed of a metal material, and the movable beams 14A and 14B may be formed of a metal material. For example, the fixed beam 42 and the movable beams 14A and 14B may be formed, for example, via an extrusion process (e.g., an aluminum extrusion process) and / or the insert 54 may be integrally formed (e.g., molded). Lubricant may be located between the first portion 62 and the fixed beam 42, and between the second portion 64 and the movable beams 14A and 14B. Alternatively, bearings (e.g., ball bearings) may be located between the first portion 62 and the fixed beam 42, and between the second portion 64 and the movable beams 14A and 14B.

[0038] Now for reference Figures 9-10C At least one connecting block 28 may include multiple connecting blocks 28. Each connecting block 28 may extend from a bottom block surface 82 to a top block surface 84. The top block surface 84 may define a pair of ridges 86, the ridges 86 being sized to position the support beam 53. More specifically, the support beam 53 may define a support bottom surface 88 and a pair of support side surfaces 90. In some embodiments, the beam 53 is straight. The top block surface 84 contacts the support bottom surface 88 and may be identical to (e.g., flat) or inverted (e.g., concave or convex) of the support bottom surface 88. The ridges 86 contact the support side surfaces 90, and similarly, the ridges 86 may be identical to (e.g., flat) or inverted (e.g., concave or convex) of the support side surfaces 90. In this way, the top block surface 84 and the ridges 86 cover the associated support beam 53 to secure the extension plate 32 to the movable beams 14A, 14B.

[0039] Continue to refer to Figures 9-10C The engagement profile 30 can be close to the bottom block surface 82, such that the top block surface 84 extends above the first movable beam 14A and the top block surface 84 and the ridge 86 support the extension plate 32. In this way, the top block surface 84 can extend a distance above the first movable beam 14A, which allows the extension plate 32 or its added mattress accessories 114 to ( Figure 11 The top surface of the joint profile 30 is substantially coplanar or flush with the patient support surface 36. The joint profile 30 can be formed by, for example... Figure 10AThe depicted front connecting block surface 92 defines a front connecting block surface 92 facing one of the associated movable beams 14A, 14B. A top block surface 84 may define an opening 94 configured to receive a bolt passing through an extension plate 32 and securing the extension plate 32 (e.g., crossbeam 53) to the connecting block 28. In some embodiments, the opening 94 may be threaded and engage with the threads of the bolt. In some embodiments, one end of a robust shaft is clamped onto the crossbeam 53 for an interference fit. In some embodiments, the crossbeam includes another hole (e.g., threaded) that aligns with the opening 94 for engagement with the bolt (e.g., threaded engagement). A bushing or other bearing element may be embedded in one of the top block surface 84 and / or the crossbeam 53. In some embodiments, the bushing is formed of a more robust material (e.g., metal, steel, brass, etc.) than the top block surface 84 and / or the crossbeam 53.

[0040] Top block surface 84 includes the rear connecting block surface 97 ( Figure 10B A cantilever portion 96 extends in a direction opposite to the engagement profile 30. In this way, the top block surface 84 can be wider than the bottom block surface 82. In some embodiments, the opening 94 may be defined by the cantilever portion 96, and more specifically, a portion of the cantilever portion 96 cantilevers from the bottom block surface 82 to provide space for the coupling bolts. A pair of opposing support plates 98 may extend from the cantilever portion 96 toward the bottom block surface 82 and connect to the rear connecting block surface 97. The support plates 98 can add rigidity and support to the connecting block 28.

[0041] The bottom surface 100 of the cantilever portion 96 may define a bushing protrusion 102 that at least partially defines an opening 94 and extends toward the bottom block surface 82. The bushing protrusion 102 may be formed of, or otherwise include, a bushing insert or bearing element formed of metal that at least partially defines the opening 94. The opening 94 may include internal threads defined by the top block surface 84, the bushing protrusion 102, and / or the bushing insert. Generally, the connecting block 28 may be integrally formed (e.g., molded), except for optional bushing inserts. In some embodiments, the connecting block 28 may be formed of a plastic material (e.g., the same plastic material as the insert 54). The extension plate 32 may include holes 103 aligned with the openings 94 of the connecting block 28 (e.g., one or more holes 103 for each connecting block 28). Each hole 103 may define an internal thread that mates with the opening 94 for receiving a fastener 105 (e.g., a bolt) that secures the extension plate 32 to the connecting block 28. In some embodiments, the hole 103 may be aligned with and extend through the support beam 53 to increase stability. In some embodiments, as previously described, additional bushing inserts may be located (e.g., embedded) in the beam 53.

[0042] Still referencing Figures 10A-10C The engagement profile 30 may define a first rib 104 and a second rib 106, with a line recess 108 defined between the first rib 104 and the second rib 108. The first rib 104 may be close to the bottom block surface 82 (e.g., flush with the bottom block surface 82), and the second rib 106 may be located between the first rib 104 and the top block surface 84. During use, the line recess 108 is sized to accommodate the actuation body 22 and secure the actuation body 23 to prevent bending into the unlocked position. More specifically, the first rib 104 is inserted into longitudinal grooves 16A, 16B between the actuation body 22 and the lower edges 58 of the associated movable beams 14A, 14B, and the second rib 106 is inserted into longitudinal grooves 16A, 16B between the actuation body 22 and the upper edges 56 of the associated movable beams 14A, 14B. The lower surface of the first rib 104 may contact the inner surface 74 near the lower edge 58, and the upper surface of the second rib 106 may contact the inner surface 74 near the upper edge 56.

[0043] The engagement profile 30 may define a beam recess 110, at least partially defined by the second rib 106, sized to accommodate the upper edges 56 of the movable beams 14A, 14B. A body portion 112, engaged with an opposing support plate 98, may partially define the beam recess 110. The body portion 112 extends from the front connecting block surface 92 opposite to the opposing support plate 98. The body portion 112 extends from the top surface of the movable beams 14A, 14B to a top block surface 84 that contacts the extension plate 32 (e.g., support beam 53) and the top surface of the movable beams 14A, 14B. In this way, the body portion 112 is substantially wedged between the movable beams 14A, 14B and the extension plate 32 by the weight of the extension plate 32 and the patient (if present). The engagement profile 30 secures the connecting block 28 in an inward direction toward the movable beams 14A, 14B. In some embodiments, the main body portion 112 extends over the front connecting block surface 92 from the first rib 104 and the second rib 106 and is opposite to the cantilever portion 96 to facilitate handling by healthcare professionals.

[0044] Now for reference Figure 11 The components of extension fitting 12 are depicted as being in a detached state. Extension fitting 12 may include mattress fitting 114, which can be attached to the main mattress (not shown) and placed on extension plate 32 to extend the patient support surface 36 in a coplanar manner. Mattress fitting 114 may substantially match the contours (e.g., outer edges) of extension plate 32. However, medical environments may include a variety of interchangeable main mattress sizes, thicknesses, and lengths, and mattress fitting 114 is not essential. Similarly, mattress fitting 114 may include multiple mattresses of various sizes, thicknesses, and lengths that can be attached to extension plate 32. The attachment between mattress fitting 114 and extension plate 32 may be permanent or selectively connected via a connecting mechanism (such as sewing, rivets, straps, buckles, buttons, snaps, hooks, adhesives, Velcro) or other securing attachment mechanism that allows removal of mattress fitting 114 for cleaning.

[0045] It should be understood that in some embodiments, the extension fitting 12 may include movable beams 14A, 14B, actuation body 22, connecting block 28, extension plate 32, insert 54, fastener 105, and optional mattress fitting 114. However, in other embodiments, depending on the architecture of the bed 10 (e.g., if movable beams 14A, 14B and actuation body 22 or some other extension components have been integrated), the extension fitting 12 may only include connecting block 28, extension plate 32, fastener 105, and optional mattress fitting 114. Furthermore, components of the extension fitting 12, such as extension plate 32 or multiple extension plates 32 of different sizes, and one or more of connecting blocks 28, may be provided individually as needed. Generally, any single component or combination of components described herein can be referred to as a “bed extension system” exhibiting some or all of the aforementioned benefits of dynamically extending the patient support surface 36. Similarly, as described above, various combinations of components of the bed extension system can be used in different directions to extend the patient support surface 36 along the length of the bed 10 in one or two directions and / or along the width of the bed in one or two directions.

[0046] The extension plate 32 may have a width "W" that defines the elongation of the patient support surface 36. The width W of the extension plate 32 (or multiple extension plates 32 individually) may be between about 8 cm and about 20 cm, for example, between about 10 cm and about 18 cm, between about 10 cm and about 15 cm, and / or between about 10 cm and about 16 cm. In some embodiments, extension plates 32 of different sizes may be used together (e.g., coupled to different connecting blocks 28 to achieve the desired elongation). As depicted, the extension plate 32 may include a rear edge 116 facing the footboard 40, which has a rounded corner to prevent damage to objects in the medical environment when the bed 10 is stationary or moving. The extension plate 32 may also include a front edge 118 with one or more recesses 120 for modification around components of the bed 10.

[0047] The disclosure described herein is further summarized in the following paragraphs and is further characterized by any and all combinations of the aspects described therein.

[0048] According to one aspect of this disclosure, an extension accessory for a hospital bed includes a first movable beam and a second movable beam, both configured to attach to the hospital bed and movable between a retracted position and an extended position. The first movable beam defines a first longitudinal groove and includes at least one first concave slot. An actuation assembly includes an actuation body extending through the first longitudinal groove between a first locking body and a lever. The actuation body is movable between a locked position and an unlocked position, wherein in the locked position, the first locking body is located in at least one first concave slot to secure the first movable beam to prevent movement, wherein in the unlocked position, the actuation body is configured to be moved by engagement with the lever, and the first locking body is located outside the at least one first concave slot, thereby allowing movement of the first movable beam. At least one connecting block includes an engagement profile sized to insert into the first longitudinal groove and prevent movement of the actuation body. An extension plate is connectable to at least one connecting block.

[0049] According to another aspect, the second movable beam defines a second longitudinal groove and at least one second concave groove, and the actuation body includes a second locking body spaced apart from the first locking body on the opposite side of the lever, the second locking body being movable between an unlocked position and a locked position by engaging with the lever.

[0050] According to another aspect, the first movable beam and the second movable beam are linearly movable relative to the axis.

[0051] According to another aspect, the lever of the actuation component is defined by a downwardly curved portion in the actuation body.

[0052] According to another aspect, the actuating body includes a first pivot sleeve pivotally connected to a hole defined by a first movable beam, the first pivot sleeve being located on the side of the first locking body opposite to the lever.

[0053] According to another aspect, the first pivot sheath is formed by the curved portion of the actuating body.

[0054] According to another aspect, at least one first concave groove includes a plurality of first concave grooves connected in series, thereby providing a plurality of locking positions.

[0055] According to another aspect, at least one first concave groove includes a plurality of first concave grooves connected in series, and at least one second concave groove includes a plurality of second concave grooves connected in series, thereby providing a plurality of locking positions.

[0056] According to another aspect, the actuation body is formed from a single strand of wire, and the first locking body and the second locking body are attached to the single strand of wire.

[0057] According to another aspect, the first movable beam includes an insert located in a first longitudinal groove of the first movable beam and defining at least one first concave groove.

[0058] According to another aspect, at least one connecting block extends from the bottom block surface to the top block surface and includes a joining profile close to the bottom block surface, such that the top block surface extends over the first movable beam and the top block surface supports the extension plate.

[0059] According to another aspect, at least one connecting block extends from the surface of a bottom block to the surface of a top block, the surface of the top block defining an opening configured to receive a bolt passing through an extension plate and to secure the extension plate to at least one connecting block.

[0060] According to another aspect, the engagement profile of at least one connecting block includes a first rib and a second rib, with the first and second ribs defining a line recess therebetween. The line recess is sized to accommodate and secure the actuating body to prevent it from bending into the unlocked position.

[0061] According to another aspect, the engagement profile defines a beam recess, the beam recess being sized to accommodate the upper edge of a first movable beam, the upper edge defining a first longitudinal groove.

[0062] According to another aspect, the first rib and the second rib can be inserted into the first longitudinal groove. The first rib contacts the inner surface of the upper edge, and the second rib contacts the inner surface of the lower edge, together defining the longitudinal groove of the first movable beam.

[0063] According to another aspect of this disclosure, an extension fitting for a hospital bed includes an extension plate having peripheral edges defining a top surface and a bottom surface for supporting a patient, and a plurality of holes extending through said top surface and the bottom surface. A plurality of connecting blocks each include a top block surface spaced apart from a bottom block surface. An engagement profile is located between the top and bottom block surfaces, the engagement profile being sized to be coupled to a movable beam. Openings extend through the top block surfaces, and a plurality of fastening members are each configured to be inserted through one of the holes in the extension plate and one of the openings in the plurality of connecting blocks.

[0064] According to another aspect, the top block surface includes a cantilever portion extending in a direction opposite to the engagement profile, and the opening is defined by the cantilever portion.

[0065] On the other hand, the opposite support plate extends from the cantilever portion toward the surface of the bottom block.

[0066] According to another aspect, the bottom surface of the cantilever portion defines a bushing protrusion that at least partially defines an opening and extends toward the surface of the bottom block.

[0067] On the other hand, the joint profile is close to the surface of the bottom block, so that the surface of the top block is positioned to support the extension plate.

[0068] According to another aspect, the engagement profile includes a first rib and a second rib, the first rib and the second rib defining a line recess therebetween, the line recess being sized to accommodate the actuating body and fix the actuating body to prevent bending to the unlocked position.

[0069] According to another aspect, the joining profile defines a beam recess, the dimensions of which are adapted to accommodate the upper edge of a first movable beam connected to the bed.

[0070] On the other hand, the mattress fittings are sized to be supported by the top surface of the extension board.

[0071] According to another aspect of this disclosure, a hospital bed includes a patient support surface extending between a headboard and a footboard. A pair of fixed beams are located below and coupled to the patient support surface. A pair of movable beams are each movably coupled to one of the fixed beams and movable between a retracted position and an extended position. Each of the movable beams defines a longitudinal groove and at least one recessed slot. An actuation assembly includes an actuation body extending through a longitudinal groove between a pair of locking bodies spaced apart by a lever. The actuation body is movable between a locked position and an unlocked position, wherein in the locked position, the locking body is located in at least one recessed slot to secure the pair of movable beams to prevent movement, wherein in the unlocked position, the actuation body is configured to be moved by engagement with a lever, and the locking body is located outside at least one recessed slot, thereby allowing movement of the pair of movable beams relative to the fixed beams. An extension plate is selectively coupled to the movable beams.

[0072] According to another aspect, a pair of fixed beams respectively define opposing longitudinal grooves facing the longitudinal grooves of the movable beam.

[0073] According to another aspect, a pair of inserts, each located in one of the opposing longitudinal grooves and extending therebetween, thereby facilitating and guiding slidable movement between the fixed beam and the movable beam.

[0074] According to another aspect, each of the pair of inserts defines a concave groove.

[0075] On the other hand, each insertion defines a series of concave slots, thereby providing multiple locking positions.

[0076] According to another aspect, each of the pair of inserts defines a track that engages with the inner surfaces of the fixed beam and the movable beam.

[0077] According to another aspect, each of the pair of inserts includes a portion located in a longitudinal groove, which defines a channel for receiving the actuating body.

[0078] According to another aspect of this disclosure, the connecting block for the extension fitting of a hospital bed includes a top block surface defining an opening for receiving fasteners. A bottom block surface is spaced apart from the opening. An engagement profile is located between the top block surface and the bottom block surface, and the engagement profile includes a beam recess sized to accommodate the upper edge of a movable beam.

[0079] According to another embodiment, the connecting block includes a first rib and a second rib. A beam recess is defined between the second rib and a main body portion extending to the surface of the top block.

[0080] According to another aspect, a recessed section is defined between the first rib and the second rib. The recessed section is sized to accommodate the actuating body and secure the actuating body in a locked position.

[0081] According to another embodiment, the connecting block includes a top block surface. The top block surface defines a pair of ridges, the dimensions of which are adapted to accommodate the support beams of the extension plate.

[0082] According to another embodiment, the connecting block includes a top block surface. The top block surface includes a cantilever portion extending in a direction opposite to the engagement profile, and an opening is defined by the cantilever portion.

[0083] According to another aspect, the connecting block defines an opening, which is further defined by a bushing protrusion extending toward the surface of the bottom block.

[0084] According to another aspect, the bushing protrusion includes a bushing insert formed of a metallic material.

[0085] Those skilled in the art will understand that the construction of this disclosure and other components is not limited to any particular material. Unless otherwise stated herein, other exemplary embodiments of this disclosure described herein may be formed from a variety of materials.

[0086] For the purposes of this disclosure, the term "connection" generally refers to the direct or indirect connection between two components (electrical or mechanical). Such a connection may be inherently fixed or inherently movable. This connection may be achieved by integrating the two components (electrical or mechanical) and any additional intermediate components into a single unit or through the two components. Unless otherwise stated, such a connection may be inherently permanent, or inherently movable or releasable.

[0087] As used herein, the term “about” means that quantities, dimensions, formulations, parameters, and other quantities and characteristics are not and need not be precise, but may be approximate and / or larger or smaller as required to reflect tolerances, conversion factors, rounding, measurement errors, and other factors known to those skilled in the art. When the term “about” is used to describe a value or endpoint of a range, this disclosure is to be understood to include the specific value or endpoint mentioned. Regardless of whether the numerical values ​​or endpoints of a range in the specification mention “about,” the numerical values ​​or endpoints of a range are intended to include two embodiments: one modified by “about” and one not modified by “about.” It will be further understood that each endpoint of each range is significant relative to and independent of another endpoint.

[0088] As used herein, the terms “basically,” “substantially,” and their variations are intended to indicate that the described feature is equal to or approximately equal to a value or description. For example, “substantially planar” is intended to mean a planar or approximately planar surface. Furthermore, “substantially” is intended to mean that two values ​​are equal or approximately equal. In some embodiments, “substantially” may mean values ​​that differ from each other by approximately 10%, such as by approximately 5%, or by approximately 2%.

[0089] It is equally important to note that the construction and arrangement of the elements of this disclosure as illustrated in the exemplary embodiments are merely illustrative. Although only some embodiments of the invention have been described in detail in this disclosure, it will be readily understood by those skilled in the art upon reviewing this disclosure that many modifications (e.g., variations in the size, dimensions, structure, shape and proportions, parameter values, mounting arrangements, use of materials, color, orientation, etc.) of various elements can be made without substantially departing from the novel teachings and advantages of the stated subject matter. For example, an element shown as integrally formed may be composed of multiple parts, or elements shown as multiple parts may be integrally formed; the operation of the interface may be reversed or otherwise altered; the structure and / or the length or width of the system's components or connectors or other elements may be changed; and the nature or number of adjustment positions provided between the elements may be changed. It should be noted that the elements and / or components of the system may be constructed from any of a variety of materials providing sufficient strength or durability, in any of a variety of colors, textures, and combinations. Therefore, all such modifications are intended to be included within the scope of the invention. Other substitutions, modifications, alterations, and omissions may be made to the design, operating conditions, and arrangements of the desired and other exemplary embodiments without departing from the spirit of the invention.

[0090] It will be understood that any described process or step within a described process may be combined with other disclosed processes or steps to form a structure within the scope of this disclosure. The exemplary structures and processes disclosed herein are for illustrative purposes and should not be construed as restrictive.

Claims

1. An extension accessory for a hospital bed, the extension accessory comprising: A first movable beam and a second movable beam, both configured to be attached to the bed and movable between a storage position and an extended position, the first movable beam defining a first longitudinal groove and including at least one first concave groove; An actuation assembly includes an actuation body extending through a first longitudinal groove between a first locking body and a lever, the actuation body being movable between a locked position and an unlocked position, wherein in the locked position, the first locking body is located in the at least one first concave groove to secure the first movable beam to prevent movement, wherein in the unlocked position, the actuation body is configured to be moved by engagement with the lever, and the first locking body is located outside the at least one first concave groove to allow movement of the first movable beam; At least one connecting block has an engagement profile, the engagement profile being sized to be inserted into the first longitudinal groove and to prevent movement of the actuating body; as well as An extension plate may be connected to the at least one connecting block.

2. The extension fitting of claim 1, wherein the second movable beam defines a second longitudinal groove and at least one second concave groove, the actuation body includes a second locking body spaced apart from the first locking body on the opposite side of the lever, the second locking body being movable between the unlocked position and the locked position by engagement with the lever.

3. The extension fitting according to claim 1 or claim 2, wherein the first movable beam and the second movable beam are linearly movable relative to an axis.

4. The extension fitting according to claim 1 or claim 2, wherein the lever is defined by a downwardly curved portion in the actuation body.

5. The extension fitting of claim 1 or claim 2, wherein the actuating body further comprises a first pivot sleeve pivotally connected to a hole defined by the first movable beam, the first pivot sleeve being located on the side of the first locking body opposite to the lever.

6. The extension fitting of claim 5, wherein the first pivot sheath is formed by the bend of the actuating body.

7. The extension fitting according to claim 1 or claim 2, wherein the at least one first concave groove comprises a plurality of first concave grooves in series, thereby providing a plurality of locking positions.

8. The extension fitting of claim 2, wherein the at least one first concave groove comprises a plurality of first concave grooves in series, and the at least one second concave groove comprises a plurality of second concave grooves in series, thereby providing a plurality of locking positions.

9. The extension fitting of claim 2, wherein the actuating body is formed of a single strand of wire, the first locking body and the second locking body are attached to the single strand of wire, and the actuating body is at least partially movable by deformation.

10. The extension fitting according to claim 1 or claim 2, wherein the first movable beam includes an insert located in the first longitudinal groove and defining the at least one first concave groove.

11. The extension fitting according to claim 1 or claim 2, wherein the at least one connecting block extends from the bottom block surface to the top block surface, and the engagement profile is close to the bottom block surface such that the top block surface extends over the first movable beam and the top block surface supports the extension plate.

12. The extension fitting according to claim 1 or claim 2, wherein the at least one connecting block extends from a bottom block surface to a top block surface, the top block surface defining an opening configured to receive a bolt passing through the extension plate and secure the extension plate to the at least one connecting block.

13. The extension fitting according to any one of claims 1, 11 or 12, wherein the engagement profile of the at least one connecting block includes a first rib and a second rib, the first rib and the second rib defining a line recess therebetween, the line recess being sized to receive the actuating body and secure the actuating body to prevent movement to the unlocked position.

14. The extension fitting of claim 13, wherein the engagement profile further defines a beam recess sized to receive an upper edge of the first movable beam, the upper edge defining the first longitudinal groove.

15. The extension fitting of claim 14, wherein the first rib and the second rib are insertable into the first longitudinal groove, the first rib contacting the inner surface of the upper edge, and the second rib contacting the inner surface of the lower edge that also defines the longitudinal groove.

16. An extension accessory for a hospital bed, the extension accessory comprising: An extension plate includes a peripheral edge defining a top surface and a bottom surface for supporting a patient, and a plurality of holes extending through the top surface and the bottom surface; Multiple connection blocks, each connection block including: The top block surface spaced apart from the bottom block surface; The dimensions between the surface of the top block and the surface of the bottom block are adapted to the engagement profile of the movable beam; An opening extending through the surface of the top block; and Multiple fastening members, each fastening member being configured to be inserted through an opening in one of the holes in the extension plate and one of the multiple connecting blocks.

17. The extension fitting of claim 16, wherein the engagement profile includes a first rib and a second rib, the first rib and the second rib defining a line recess therebetween, the line recess being sized to receive and secure the actuating body to prevent movement to the unlocked position.

18. A hospital bed, comprising: The patient support surface extends between the headboard and the footboard; A pair of fixed beams are located below the patient support surface and connected to the patient support surface; A pair of movable beams, each movable beam being movably connected to one of the pair of fixed beams and movable between a retracted position and an extended position, each of the pair of movable beams defining a longitudinal groove and at least one concave slot; An actuation assembly includes an actuation body extending through a longitudinal groove between a pair of locking bodies spaced apart by a lever, the actuation body being movable between a locked position and an unlocked position, wherein in the locked position the locking body is located in the at least one recessed groove to secure the pair of movable beams to prevent movement, wherein in the unlocked position the actuation body is configured to be moved by engagement with the lever, and the locking body is located outside the at least one recessed groove, thereby allowing movement of the pair of movable beams relative to the fixed beam; as well as An extension plate is selectively connected to the movable beam.

19. The hospital bed of claim 18, wherein the pair of fixed beams respectively define opposing longitudinal grooves facing the longitudinal groove.

20. The hospital bed according to claim 18 or 19, further comprising a pair of inserts, each insert located in one of the opposing longitudinal grooves and in the longitudinal groove and extending therebetween, thereby facilitating and guiding slidable movement between the fixed beam and the movable beam.

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