This application relates to prosthetics and orthotics. More particularly, the application relates to improving the independence of individuals with mobility impairments and/or upper-limb impairments.
Conventional amputee and mobility eating utensils are swivel type devices that make it difficult for an individual to feed themselves. For example, these conventional eating utensils prevent, or at least hinder, a user from securing food from a plate with a fork or spoon and then effectively transitioning the food from the plate to their mouths without some type of secondary assistance. Devices, systems or utensils that could improve the independence of individuals, such as allowing users to feed themselves, would be welcomed in the art.
In one aspect, a prosthetic feeding device is disclosed. In one embodiment, the prosthetic feeding device includes: (1) a multiple position rotator including (1A) a main body having a shaft tunnel and a rotation director, (1B) a rotating body having a pivot shaft and a head with a device receptor, wherein the rotation director is located within the main body and positioned to permit rotation of the pivot shaft within the shaft tunnel in either a clockwise or counter clockwise direction around a longitudinal axis of the main body, and (1C) a cap screw mechanically coupled to the pivot shaft to position the pivot shaft in the shaft tunnel; and (2) an eating utensil mechanically coupled to the head via the device receptor.
In another aspect, a multi-position prosthetic device is disclosed. In one embodiment, the multi-position prosthetic device includes: (1) a main body having a shaft tunnel and a rotation director and (2) a rotating body having a pivot shaft and a head with a device receptor configured to mechanically couple an end device to the head, wherein the rotation director is located within the main body and positioned to permit rotation of the pivot shaft within the shaft tunnel in only one direction around a longitudinal axis of the main body.
In yet another aspect, the disclosure provides another embodiment of a prosthetic feeding device. In this embodiment, the prosthetic feeding device includes: (1) a multiple position rotator having: (1A) a main body having a shaft tunnel and a one way bearing device and (1B) a rotating body having a pivot shaft with a threaded coupling receiver and a head with a device receptor, wherein the one way bearing device is positioned to surround a portion of the shaft tunnel to permit and control rotation of the pivot shaft within the shaft tunnel in either a clockwise or counter clockwise direction around a longitudinal axis of the main body and (2) an eating utensil mechanically coupled to the head via the device receptor.
For a more complete understanding of the present disclosure, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
The disclosure provides embodiments of a multi-position prosthetic and orthotic device, referred to herein as a multi-position prosthetic device, which can be employed by individuals to assist them in various tasks. The multi-position prosthetic device includes a multiple position rotator for one-way rotation that allows active positioning of an end device. An end device is a device configured for a specific task or tasks that is mechanically couplable to the multiple position rotator. When an end device is coupled or fixed to the multiple position rotator, a user can independently perform the various tasks. For example, the multi-position prosthetic device can be a prosthetic and orthotic feeding device, referred to herein as a prosthetic feeding device, wherein the end device is a fork or another eating utensil which can be positioned via the multiple position rotator to allow an individual to independently feed himself/herself. An end device can also be a non-eating utensil such as a razor, a comb, a brush, etc.
The end device can be mechanically coupled to the multiple position rotator via a conventional means. In some embodiments, the end device is coupled to the multiple position rotator employing a non-permanent conventional means. For example, the end device can be bolted to the multiple position rotator. A conventional type of quick connector is another example of a non-permanent type of connector that can also be used for coupling the end device to the multiple position rotator. In another embodiment, the end device can be coupled to the multiple position rotator by a permanent connection, such as via a weld.
The multi-position prosthetic device can be attached to a variety of mounting structures. As such, the multi-position prosthetic device includes an attacher that allows the application of different receiving couplings. The attacher allows the multi-position prosthetic device to interface with various mounting structures including, but not limited to, prosthetic wrist units, adaptive bracing and an impaired extremity. The attacher can be coupled to various types of receiving couplings to allow universal mounting of the multi-position prosthetic device. In one embodiment, the attacher is a threaded area for coupling to various receiving couplings of different mounting structures. In another embodiment, the attacher includes two flat areas that can be pinched by a prosthetic device, such as a Motion Control Electronic Terminal Device (ETD). An electric greifer, such as an Otto Bock Greifer, conventional hooks and myoelectric hands are additional examples of clamping devices that can be used. As such, a user can hold the multi-position prosthetic device by pinching or clamping on the attacher flat areas.
In one embodiment, the multi-position prosthetic device 100 or at least a portion thereof is made of steel. In another embodiment, some or the entire multi-position prosthetic device 100 is constructed of aluminum. One skilled in the art will understand that the multi-position prosthetic device 100 can be constructed of other rigid materials, also, including non-metals. In some embodiments, the multi-position prosthetic device 100, or at least a part thereof, can be constructed of a plastic or another type of moldable material. The finish of the multi-position prosthetic device 100 may also vary. For example, the finish for a metallic multi-position rotating device can be polished, anodized, or natural. Different components of the multi-position prosthetic device 100 can be constructed of different materials.
The main body 110 includes a seal groove 115, an attacher 116, a shaft tunnel 117 and a rotation director 119. The rotating body 120 includes a pivot shaft 122, a head 123, a device receptor 124, and a device receptor 125. The pivot shaft 122 fits within the shaft tunnel 117 of the main body 110 and is secured therein by the cap screw 130. The cap screw 130 fits within a coupling receiver (not illustrated in
The multi-position prosthetic device 100 allows rotation of the end device 140 in a single direction along a rotational line and holds the end device 140 at stable positions along the rotational line. The rotational line can correspond to a geometric shape of the rotation director 119. The rotational line can be an arc. In one embodiment disclosed herein the arc is a circle providing 360 degrees of stable positions. The rotational line is around the longitudinal axis of the multi-position prosthetic device 100.
The stable positions can be determined by position holders of the rotation director 119. The position holders provide the stable positions along the rotation arc that allow the end device 140 to be temporarily fixed. In some embodiments, each of the stable positions is equally spaced (including substantially equally spaced) apart along the rotational line. In other embodiments, the stable positions along the rotational line are not equally spaced. As such, the positioned holders or the stable positions that correspond thereto are irregularly spaced along the rotational line. The spacing of the position holders along the rotational line may be based on, for example, expected use, user size or user preferences.
Instead of a conventional swivel device, the multi-position prosthetic device 100 allows the end device 140 connected thereto to be fixed at a stable position along the rotational line of the rotation director 119. A stable position is wherein the rotating body 120 is temporarily fixed from rotating with respect to the main body 110. A non-stable position can be when the rotating body 120 is in between the spaces defined by the position holders. A sufficient rotational force is needed to move the rotational body 120 from a stable position. Thus, when the end device 140 is an eating utensil, users can feed themselves by placing the connected eating utensil at a particular position of their choosing from the multiple stable positions provided by the multi-position prosthetic device 100. To rotate to another stable position, the user can apply a sufficient rotational force to the rotating body 120 (via the end device 140 on the edge of a table, for example). A sufficient rotational force is the amount of rotational force needed to move the rotational body 120 from a stable position. In one embodiment, the rotation director 119 only permits clockwise rotation. In another embodiment, the rotation director 119 only permits counter clockwise rotation. The rotation director 119 is housed within the main body 110 and positioned with the shaft tunnel 117 to permit rotation of the pivot shaft 122, and therefore the rotating body 120, in only one direction. In FIG. 1, the rotation director 119 is positioned to surround a portion of the shaft tunnel 117 to control the rotation of the pivot shaft 122.
In
In some embodiments, each of the stable positions is equally spaced (including substantially equally spaced) apart along the rotational line with respect to the bearings. In other embodiments, the stable positions along the rotational line may not be equally spaced. In these embodiments, spacers may be employed between the bearings of a one way clutch. The spacing of the position holders along the rotational line may be based on, for example, expected use, user size or user preferences.
The end device 140 is fixed to a portion of the head 123. In
The seal groove 115 is sized and positioned to receive and hold the o-ring 150. The seal groove 115 is a machined groove configured for an o-ring. In one embodiment, the o-ring 150 is a ½×⅝ inch diameter o-ring. One skilled in the art will understand that other types of gaskets can be used instead of an o-ring and that the seal groove 115 can be configured for different sizes of gaskets or o-rings. The washer 160 can be a crush washer sized to fit around the cap screw 130 and against the main body 110. In some embodiments, an o-ring can be used instead of a washer. In one embodiment, a ¼″ by ⅜″ o-ring can be used instead of the washer 160. Conventional gaskets or o-rings can be employed in the illustrated embodiment.
The main body 110 is designed to be used with mobility units that are standard within the orthotic and prosthetic industry. The attacher 116 is configured to provide a mechanical connection to other devices, such as prosthetic limbs, for the multi-position prosthetic device 100. In the illustrated embodiment, the attacher 116 is a threaded area to provide a male attachment for a female receptacle of another device. The threaded area is threaded for attaching with about a ½ inch area of threads along the length of the attacher 116. In the illustrated embodiment, the attacher 116 has ½-20 threads for attaching to conventional prosthetic limbs in the U.S. The diameter of the attacher 116 and the thread type can vary in different embodiments to correspond to various standard coupling devices. For example, the diameter and thread type may be configured to correspond to European prosthetic limb standards. Thus, the attacher 116 can be sized and shaped to comply with various attachment standards throughout the world.
In other embodiments, the attacher 116 can be configured to couple with devices employing a quick-disconnect connection or other conventional coupling mechanisms. One skilled in the art will understand that a quick-disconnect connection includes a sleeve with ball bearings that allows the attacher 116 to snap into place. For this type of connection, the outer diameter of the attacher 116, or dimension “C,” is ⅝ inch. The attributes of the attacher 116, including the diameter, length and shape, can vary to connect to designated receivers. The configuration of the attacher 116 can also vary. For example, the attacher 116 is a male device that couples with a type of female device. In some embodiments, at least a portion of the attacher 116 may be a female device that is configured to couple to a male receiving device. In one embodiment, the attacher 116 is configured to connect to multiple types of connections. For example, the attacher 116 can include a threaded area on the outside surface and also configured with a disconnect connection. Thus, a single embodiment can be configured for multiple types of connections.
Although the disclosure has been described in detail, those skilled in the art should understand that they can make various changes, substitutions and alterations herein without departing from the spirit and scope of the invention in its broadest form. One skilled in the art will understand that the dimensions disclosed herein can be modified for different embodiments. Additionally, one skilled in the art will understand the scope of the disclosure includes manufacturing the various components disclosed herein and methods of manufacturing the components. In one embodiment, the various components may be machined or molded.
The disclosure provides a multi-position prosthetic device that increases the independence and quality of life of amputees or physically impaired individuals. The multi-position prosthetic device can be a prosthetic feeding device that includes at least one eating utensil connected as an end device. With the prosthetic feeding device, an individual can feed themselves by rotating an attached fork, spoon, knife, or other eating utensil to the proper orientation as needed for them. In some embodiments, the disclosed multi-position prosthetic device can be employed with additional types of position holders, such as detent screws or set screws, which can be used with a one way clutch bearing to provide or hold stable positions. For example, an additional position holder can be used to provide additional friction on the inner surface of head 123 to assist in holding a stable position.
This application claims priority from U.S. Provisional Application No. 62/036,961 filed on Aug. 13, 2014, BY Worley et. al, entitled “ROTATING END DEVICE WITH A MULTI-POSITION ROTATING DEVICE,” which is incorporated herein by reference in its entirety.
Number | Date | Country | |
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62036961 | Aug 2014 | US |