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US 4,654,903 AGranted
Bedsore prevention device in an invalid bed arrangement
AssigneeNova Technologies, Inc.
InventorsCharles F. Chubb, Joseph C. Vaiana
Life of this patent
Estimating the term…
Abstract
An arrangement for the prevention of bedsores on invalids confined to bed, in which the bed can be tilted toward either side for shifting the weight distribution of a patient to promote circulation of the blood and thereby prevent the development of bedsores. A reversible motor drives a ball nut through a worm screw so that motion of the ball nut in one direction raises one side of the bed frame, and motion in an opposite direction raises the opposite side of the bed frame.
Claims21
A bedsore prevention arrangement comprising a bed with two opposite sides and including a mattress, a bed frame and legs;
- tilt means for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising reversible motor drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- first roller means and track means for guiding and restraining said ball nut;
- second roller means connected to said ball nut and supporting lever arm members actuated by said ball nut so that motion of said ball nut in one direction moves said supporting lever arm members for raising one side of said bed frame and motion of said ball nut in an opposite direction moves said supporting lever arm members for raising an opposite side of said bed frame.
3 more elements
A bedsore prevention arrangement comprising a bed with two sides and mattress, a bed frame and legs;
- tilt means for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- first roller means and track means for guiding and restraining said ball nut;
- second roller means connected to said ball nut and supporting lever arm members actuated by said ball nut so that motion of said ball nut in one direction moves said supporting lever arm members for raising one side of said bed frame and motion of said ball nut in an opposite direction moves said supporting lever arm members for raising an opposite side of said bed frame.
3 more elements
A bedsore prevention arrangement comprising a bed with two opposite sides and mattress, a bed frame and legs;
- tilt means for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- first roller means and track means for guiding and restraining said ball nut;
- second roller means connected to said ball nut and supporting lever arm members actuated by said ball nut so that motion of said ball nut in one direction moves said supporting lever arm members for raising one side of said bed frame and motion of said ball nut in an opposite direction moves said supporting lever arm members for raising an opposite side of said bed frame;
- support members attached to said lever arm members and having vertical projections engaging said bed frame for providing lateral support to said bed frame on both sides of the bed.
4 more elements
A bedsore preventing arrangement comprising a bed with two opposite sides and mattress, a bed frame and legs;
- tilt means for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- first roller means and track means for guiding and restraining said ball nut;
- second roller means connected to said ball nut and supporting lever arm members actuated by said ball nut so that motion of said ball nut in one direction moves said supporting lever arm members for raising one side of said bed frame and motion of said ball nut in an opposite direction moves said supporting lever arm members for raising an opposite side of said bed frame;
- support members attached to said lever arm members and having projections engaging one side of said bed frame for providing lateral support to said frame;
- roller means on the opposite side of said bed frame to permit lateral motion between said bed frame and support thereof.
5 more elements
A bedsore prevention arrangement comprising a bed with two opposite sides and including a mattress, a bed frame and legs;
- tilt means with support frame for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilt means comprising motor drive means coupled so as to produce a reciprocating and adjustable linear motion to a member;
- means for guiding and restraining said member;
- lift roller means connected to said member;
- said lift roller means supporting a pair of right lever arm members having right ends supporting the right side of said bed frame and left ends pivoted below the left side of the bed frame from a tilt means support frame resting on a floor;
- said lift roller means also supporting a pair of left lever arm members oppositely disposed from said right lever arm members;
- said right and left pairs of lever arm members being so inclined that leftward motion of said lift roller means raises the right lever arm members and thereby the right side of the bed frame, rightward motion of said lift roller means raising the left lever arm members and thereby the left side of the bed frame.
5 more elements
A bedsore prevention arrangement comprising a bed with two opposite sides and including a mattress, a bed frame and legs;
- tilt means with support frame for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising reversible motor drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- guidance roller means and track means for guiding and restraining said ball nut;
- lift roller means connected to said ball nut;
- said lift roller means supporting a pair of right lever arm members having right ends supporting the right side of said bed frame and left ends pivoted below the left side of the bed frame from said tilt means support frame resting on a floor;
- said lift roller means also supporting a pair of left lever arm members oppositely disposed from said right lever arm members;
- said right and left pairs of lever arm members being so inclined that leftward motion of said lift rollers means raises the right lever arm members and thereby the right side of the bed frame, rightward motion of said lift roller means raising the left lever arm members and thereby the left side of the bed frame.
6 more elements
A bedsore prevention arrangement comprising a bed with two sides and mattress, a bed frame and legs;
- tilt means with support frame for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- first roller means and track means for guiding and restraining said ball nut;
- guidance roller means and track means for guiding and restraining said ball nut;
- lift roller means connected to said ball nut;
- said lift roller means supporting a pair of right lever arm members having right ends supporting the right side of said bed frame and left ends pivoted below the left side of the bed frame from said tilt means support frame resting on a floor;
- said lift roller means also supporting a pair of left lever arm members oppositely disposed from said right lever arm members;
- said right and left pairs of lever arm members being so inclined that leftward motion of said lift rollers means raises the right lever arm members and thereby the right side of the bed frame, rightward motion of said lift roller means raising the left lever arm members and thereby the left side of the bed frame.
7 more elements
A bedsore prevention arrangement comprising a bed with two opposite sides and mattress, a bed frame and legs;
- tilt means with support frame for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- guidance roller means and track means for guiding and restraining said ball nut;
- lift roller means connected to said ball nut;
- said lift roller means supporting a pair of right lever arm members having right ends supporting the right side of said bed frame and left ends pivoted below the left side of the bed frame from said tilt means support frame resting on a floor;
- said lift roller means also supporting a pair of left lever arm members oppositely disposed from said right lever arm members;
- said right and left pairs of lever arm members being so inclined that leftward motion of said lift roller means raises the right lever arm members and thereby the right side of the bed frame, rightward motion of said lift roller means raising the left lever arm members and thereby the left side of the bed frame;
- and support members attached to said lever arm members and having vertical projections about said bed frame for providing lateral support to said bed frame on both sides of the bed.
7 more elements
A bedsore preventing arrangement comprising a bed with two opposite sides and mattress, a bed frame and legs;
- tilt means with support frame for tilting the bed toward either one of said two sides;
- patient support means for supporting a reclining patient when the bed is tilted;
- said tilting means comprising hand crank drive means coupled to a worm screw;
- a ball nut driven by said worm screw;
- guidance roller means and track means for guiding and restraining said ball nut;
- lift roller means connected to said ball nut;
- said lift roller means supporting a pair of right lever arm members having right ends supporting the right side of said bed frame and left ends pivoted below the left side of the bed frame from said tilt means support frame resting on a floor;
- said lift roller means also supporting a pair of left lever arm members oppositely disposed from said right lever arm members;
- said right and left pairs of lever arm members being so inclined that leftward motion of said lift rollers means raises the right lever arm members and thereby the right side of the bed frame, rightward motion of said lift roller means raising the left lever arm members and thereby the left side of the bed frame;
- support members attached to said lever arm members and having projections engaging one side of said bed frame for providing lateral support to said frame;
- and roller means on the opposite side of said bed frame to permit lateral motion between said bed frame and support thereof.
8 more elements
Dependencies are inferred from the claim text.