Mobile hospital bed scale
First Claim
1. A mobile bed scale for a hospital bed, said hospital bed having a supporting frame, and having an undercarriage interior to said supporting frame extending below said supporting frame, comprising:
- a mobile base frame moved on a planar surface;
said mobile base frame having a means for rolling on said planar surface;
a horizontal bed support to be slid under a hospital bed sufficiently large to stably support said supporting frame of such hospital bed when such horizontal bed support is raised;
a lifting apparatus for elevating said horizontal bed support with minimal horizontal displacement of a hospital bed being lifted;
said lifting apparatus for elevating said horizontal bed support being mounted on said mobile base and being mounted generally beneath and adjacent to said horizontal bed support;
said horizontal bed support, said lifting apparatus, and said mobile base frame being sufficiently low above said planar surface on which said mobile base frame is moved to be slid under a hospital bed;
said horizontal bed support having an aperture to accommodate said undercarriage of said hospital bed;
said lifting apparatus for elevating said horizontal bed support having a central lifting axis defined by a line perpendicular to said horizontal bed support, said line being located approximately centered on all moments of said horizontal bed support when a hospital bed is on said horizontal bed support;
a power source for causing said lifting apparatus to elevate said horizontal bed support situated laterally to said central lifting axis;
said power source being mounted on said mobile bed scale;
said power source for causing said lifting apparatus to elevate said horizontal bed support, and said horizontal bed support, being adjustably operable to a raised position by a human from a standing position;
said horizontal bed support having a weight sensing means;
said weight sensing means being at least three piezoelectric sensors;
said weight sensing means being connected by a data transmission means to a display means;
said display means being mounted on said mobile base frame on an arm extending generally upwards from said mobile base frame to permit visual perception of said display means by a human in a standing position.
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Accused Products
Abstract
A mobile hospital patient bed scale is contemplated which lifts the entire bed with patient in situ on a load platform with an aperture to accommodate the undercarriage of many hospital beds such as a motor. The scale minimizes both vertical and horizontal displacement. The platform has load cells which deliver data to a memory and display device. The invention is portable and partly foldable to aid in storage. It provides for recharging if desired, and for use of an auxiliary power source if desired. The driving force for lifting may be a hydraulic ram or an electrically powered screw drive.
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Citations
92 Claims
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1. A mobile bed scale for a hospital bed, said hospital bed having a supporting frame, and having an undercarriage interior to said supporting frame extending below said supporting frame, comprising:
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a mobile base frame moved on a planar surface; said mobile base frame having a means for rolling on said planar surface; a horizontal bed support to be slid under a hospital bed sufficiently large to stably support said supporting frame of such hospital bed when such horizontal bed support is raised; a lifting apparatus for elevating said horizontal bed support with minimal horizontal displacement of a hospital bed being lifted; said lifting apparatus for elevating said horizontal bed support being mounted on said mobile base and being mounted generally beneath and adjacent to said horizontal bed support; said horizontal bed support, said lifting apparatus, and said mobile base frame being sufficiently low above said planar surface on which said mobile base frame is moved to be slid under a hospital bed; said horizontal bed support having an aperture to accommodate said undercarriage of said hospital bed; said lifting apparatus for elevating said horizontal bed support having a central lifting axis defined by a line perpendicular to said horizontal bed support, said line being located approximately centered on all moments of said horizontal bed support when a hospital bed is on said horizontal bed support; a power source for causing said lifting apparatus to elevate said horizontal bed support situated laterally to said central lifting axis; said power source being mounted on said mobile bed scale; said power source for causing said lifting apparatus to elevate said horizontal bed support, and said horizontal bed support, being adjustably operable to a raised position by a human from a standing position; said horizontal bed support having a weight sensing means; said weight sensing means being at least three piezoelectric sensors; said weight sensing means being connected by a data transmission means to a display means; said display means being mounted on said mobile base frame on an arm extending generally upwards from said mobile base frame to permit visual perception of said display means by a human in a standing position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
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81. A method of weighing a patient in situ comprising the following steps:
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determining the tare weight of a hospital bed having an undercarriage without a patient in said bed; weighing a patient by sliding a mobile bed scale having a horizontally stable horizontal bed support under a hospital bed and by elevating a patient'"'"'s entire hospital bed with the patient in situ on said horizontally stable horizontal bed support without necessity of attachment or extension of said horizontal bed support in order to elevate said hospital bed, said horizontal bed support having an aperture to accommodate said undercarriage of said hospital bed, said mobile bed scale stably supporting said bed and containing load cells, said mobile bed scale having a fluid-driven power source for causing said lifting apparatus to elevate said horizontal bed support;
said mobile bed scale having means of display, said mobile bed scale having a data transmission means connected from said load cells to said means of display. - View Dependent Claims (82, 83, 84, 85, 86, 87, 88)
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89. A method of making a mobile hospital bed scale comprising the following steps:
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assembling a lifting apparatus to a horizontal bed support having at least three piezoelectric sensors, said lifting apparatus being capable of being slid under a hospital bed having an undercarriage and stably supporting a patient'"'"'s entire hospital bed with the patient in situ on said lifting apparatus without necessity of attachment or extension of said horizontal bed support in order to elevate said hospital bed, said horizontal bed support having an aperture to accommodate said undercarriage of said hospital bed, and being capable of lifting said hospital bed with minimal horizontal displacement; assembling a mobile base frame to said lifting apparatus; disposing a fluid-driven power source on said mobile base frame to cause said horizontal bed support to be elevated; connecting a weight sensing means to a wire harness; connecting said data transmission means to a display means; and mounting said display means on an arm, said display means being perceptible to a standing human; and connecting said arm to said mobile bed scale. - View Dependent Claims (90, 91, 92)
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Specification