The present invention relates to a lift system that can be used in conjunction with mobility, transfer and body weight support devices.
There are unfortunately many individuals who have a disability which, whether permanent or temporary, prohibits them from performing their activities of daily living and limits their ability to participate in life-improving therapies. Some of these disabilities include stroke, spinal cord injury, debility due to aging, post-operative weakness, and many other disorders and conditions.
People with disabilities also often require caregivers to transfer them between devices such as wheelchairs, beds, therapy devices, toilets, and bath tubs for their daily activities.
The present invention provides a lift system that can be attached to a wheeled frame for mobility. It can also be connected to a pole with a rotatable arm for rotation relative to the pole. It can be used to transfer a user from a wheelchair to another supporting frame. Thus, an aspect of the present invention is a lift system, comprising:
a support column;
a back panel slidably mounted on the support column, the back panel having a first panel end and a second panel end;
a pair of arm supports mounted on the back panel between the first panel end and the second panel end;
a seat panel pivotably mounted on the second panel end of the back panel; and
a slider mounted between the back panel and the support column for moving the back panel relative to the support column.
According to an embodiment of the present invention, the lift system also comprises:
an attachment joint attached to the support column, and
a support member having a first end connected to the attachment joint and a second end arranged for connection to a wheeled frame. (
According to an embodiment of the present invention, the lift system further comprises:
an attachment joint attached to the support column, and
a bracket having a first end connected to the attachment joint and a second end arranged for connection to a wheeled frame, wherein the wheeled frame comprises a frame member connected to the second end of the bracket, and the support column can be caused to rotate in a direction perpendicular to the frame member.
According to an embodiment of the present invention, the back panel is adjustable between a first panel position and a second panel position along with the support column, and wherein the seat panel is adjustable between a first seat position and a second seat position relative to the back panel, such that
when the back panel is oriented in the first panel position, the seat panel is oriented in the first seat position to support a user in a sitting posture, or the seat panel is oriented in the second seat position to accommodate a user in a standing or walking posture.
According to an embodiment of the present invention, when the back panel is oriented in the second panel position, the seat panel is oriented in the second seat position relative to the back panel to support a user in a lying posture.
According to an embodiment of the present invention, the lift system also comprises:
a leg support pivotably connected to the seat panel, the leg support adjustable between a folded position and an extended position relative to the seat panel, wherein
when the back panel is oriented in the first panel position, the leg support is oriented in the folded position to accommodate the user in the sitting posture or the standing or walking posture, and
when the back panel is oriented in the second panel position, the leg support is oriented in the extended position to support the user in the lying posture.
According to an embodiment of the present invention, when the back panel is oriented between the first panel position and the second panel position, the seat panel is oriented between the first seat position and the second seat position to support a user in a reclined posture.
According to an embodiment of the present invention, the arm supports are adjustable between an extended position substantially perpendicular to the back panel and a folded position substantially parallel to the back panel.
According to an embodiment of the present invention, the lift system also comprises:
a harness support arm attached to the back panel near the first panel end, and
a harness support connected to the harness support arm, the harness support arranged for attachment of a suspension support strap.
According to an embodiment of the present invention, the lift system also comprises:
an attachment joint attached to the support column, and
a bracket having a first end connected to the attachment joint and a second end arranged for connection to an attachment arm, the attachment arm arranged for mounting the support column along with the back panel to a supporting structure.
According to an embodiment of the present invention, the lift system also comprises:
an attachment joint attached to the support column,
a bracket having a first bracket end and a second bracket end, the first bracket end connected to the attachment joint; and
an attachment arm having a first arm end connected to the second bracket end, and a second arm end pivotably mounted to a supporting structure, allowing the attachment arm and the lift system to be caused to move in a horizontally direction relative to the support structure.
According to an embodiment of the present invention, the lift system also comprises:
at least a first attachment joint and second attachment joint separately attached to the support column, the first attachment joint arranged to connect to a support structure, wherein the second attachment joint is arranged to connect to a wheeled frame while the first attachment joint is connected to the support structure.
According to an embodiment of the present invention, the lift system also comprises:
at least one actuator connected to the seat panel for facilitating adjustment of the seat panel between the first seat position and the second seat position.
According to an embodiment of the present invention, the lift system also comprises:
at least one actuator connected to the leg support for facilitating adjustment of the leg support between the folded position and the extended position.
According to an embodiment of the present invention, the first panel position of the back panel is substantially a vertical position and the second panel position of the back panel is substantially a horizontal position.
According to an embodiment of the present invention, the lift system also comprises:
a pair of pivot arms fixedly attached to the back panel; and
a pair of brackets, each of the brackets having a first bracket end fixedly mounted to the seat panel and a second bracket end rotatably connected to one of the pivot arms for pivotably mounting the seat panel to the back panel.
According to an embodiment of the present invention, the lift system also comprises:
a mounting bracket fixedly attached to the support column;
support member having a first support end pivotably connected to the mounting bracket and a second support end arranged for connection to a wheeled frame, and
an actuator having a first actuator end pivotably connected to the mounting bracket and a second actuator end connected to support member, wherein the actuator has an actuator shaft extendable to rotate the support column relative to the support member.
According to an embodiment of the present invention, the lift system also comprises:
a lead screw movably connecting the slider to support column, and
an actuator connected to the lead screw arranged to move the slider relative to the support column.
According to an embodiment of the present invention, the lift system also comprises:
one or more cross members connecting between the slider and the back panel to allow the back panel to move along with the slider relative to the support column.
According to an embodiment of the present invention, the lift system also comprises:
a lead screw movably connecting the slider to support column, and
an actuator connected to the lead screw arranged to move the slider relative to the support column so as to adjust a height of the lift system relative to the support column.
Various embodiments of the present invention include a multifunction adaptable lift system, which can be attached to a mobility device such as a wheeled frame, a mobility frame or a fixed support object like a wall or a pole. The adaptable lift system is also transferable between the mobility devices or the support objects. The lift system can be used as a positioning system or a user positioning system arranged to transfer a user from one location to another location.
A rigid back panel 110 is attached to the slider 103 for movement relative to the support column 101. The back panel 110 can also be a frame. A rigid seat panel 111 is pivotally attached to the back panel 110 via a pair of brackets 117 using pivot arms 112 and pivot joints 113. The axis of the pivot joint 113 aligns approximate to the axis passing through the user's hip joints and thus allows natural movements of the legs. A pair of levers 115 provide the rotational movement of the seat panel 111 about joints 113. The levels 115 can be used to lock the seat panel between a first panel position and a second panel position. The first panel position is used to support a user in a sitting posture (see
A pair of left and right inverted L shaped harness support arms 130 are mounted to the back panel 110. The harness support arms 130 are slidable parallel to the column 101 and lockable using a pair of harness support arm brackets 133. A harness hanger 131 is slidably attached to the segments of the harness support arms 130 perpendicular to the back panel 110. A lower harness hanger 132 is pivotally attached to the harness hanger 131 so that a user support harness or harness suspension strap 191 (see
As seen in
In addition to joint 172, one or more lift attachment joints 175 can be attached to the column 101. Different type of joints can provide different functions. For example, lift rotation can be made about an axis with different orientation. As seen in
According to the present invention, the lift system 100 can be transferred to a mobile frame 300 while the lift system 100 is attached to the wheeled frame 200. After the lift system 100 is secured to the mobile frame 300, the wheeled frame 200 can be removed. As shown in
According to an embodiment of the present invention, the seat panel 111 can be split into left and right halves. As shown in
The support column 101 of the lift system 100′ is pivotally connected to an attachment support member 155 via a bracket 150 about a pivot 151. A linear actuator or column actuator 152 connected to the bracket 150 is used to control the angle of rotation of the support column 101 with respect to the attachment support member 155. When the support column 101 is tilted or rotated using the column actuator 152, the back panel 110, the seat 111, and the leg rest 116 are also rotated along with the support column 101. When the column actuator 152 is retracted, the support column 101 is substantially vertical. When the column actuator 152 is extended the support column 101 is substantially horizontal. The attachment tie plate 156 is used to secure the lift system 100′ to a wheeled frame 200′ or a support object. The tie plate 156 may have pivotal joints or the like to assist the mounting of the lift system 100′ to a support object such as a pole. The support column 101 also has a lead screw 106 coupled to a slider 140 for moving the seat frame 143 and the back frame 141 relative to the support column 101 using a drive housing 102.
Thus, although the present invention has been described with respect to one or more embodiments thereof, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
The application claims priority under 35 USC § 119 to U.S. Provisional application No. 62/547,787, filed Aug. 19, 2017, and U.S. Provisional application No. 62/597,443, filed Dec. 12, 2017, whose entire contents are hereby incorporated by reference.
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