Flexible leg supporting membrane, leg support frame and mobile patient standing and raising aid

A mobile patient standing and raising aid comprising:

• a base comprising a horizontal footplate;
• a mast extending upwardly from the base and comprising a maneuvering handle;
• a lifting arm pivotally coupled to the mast for arc movement between a lowered and a raised position of the aid;
• the lifting arm comprising a sling attachment point and a patient handle;
• a flexible supporting membrane comprising:
• a top edge configured to be provided in a vicinity of knees of the patient when in use;
• a bottom edge configured to be provided in a vicinity of ankles of the patient when in use;
• a first and second lateral edge extending between the bottom edge and the top edge;
• and a central and two peripheral sections extending along the direction defined by the lateral edges between the top edge and the bottom edge of a sheet, wherein the peripheral sections are adapted for each supporting one of the two knees of the patient by yielding to pressure exerted by the knees and thus forming a knee cradling depression, and
• wherein the flexible supporting membrane has a higher elastic modulus in the central section than the two adjacent peripheral sections, such that the central section is stiffer than the two adjacent peripheral sections, such that during use of the flexible supporting membrane the central section deforms less than the peripheral sections and is configured to act as a barrier keeping the knees separated from each other in each respective depression;
• and
• a strap made from a flexible and stretchable material, the strap for securing the lower legs of the patient in direct proximity of the flexible supporting membrane to prevent both sideways movements of feet of the patient with respect to said membrane.