US 12,403,051 B2
Stretcher
Ezio Menna, Collecchio (IT); and Michele Corradi, Parma (IT)
Assigned to STEM S.R.L., Medesano (IT)
Filed by STEM S.R.L., Medesano (IT)
Filed on Oct. 5, 2022, as Appl. No. 17/938,088.
Claims priority of application No. 102021000025568 (IT), filed on Oct. 7, 2021.
Prior Publication US 2023/0233386 A1, Jul. 27, 2023
Int. Cl. A61G 1/056 (2006.01); A61G 1/02 (2006.01); A61G 3/02 (2006.01)
CPC A61G 1/0562 (2013.01) [A61G 1/0212 (2013.01); A61G 3/0245 (2013.01); A61G 3/0254 (2013.01); A61G 3/0272 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stretcher, which comprises:
a support frame for supporting a patient;
a pair of front legs rotatably coupled to the support frame around a first rotation axis, wherein each front leg supports a front wheel holder frame hinged to the respective front leg around a first oscillation axis parallel to the first rotation axis and supporting a front wheel resting on a rest plane, wherein the front wheel pivots around a respective first pivot axis orthogonal to the first oscillation axis;
a pair of rear legs rotatably coupled to the support frame around a second rotation axis, wherein each rear leg supports a rear wheel holder frame hinged to the respective rear leg around a second oscillation axis parallel to the second rotation axis and supporting a rear wheel resting on the rest plane, wherein the rear wheel pivots around a respective second pivot axis orthogonal to the second oscillation axis;
a handling arrangement for the front wheel holder frame and the rear wheel holder frame configured to independently vary an inclination of the front wheel holder frame around the first oscillation axis and of the rear wheel holder frame around the second oscillation axis;
a control module operatively connected to the handling arrangement and configured to actuate the handling arrangement so as to keep the respective first pivot axis and the respective second pivot axis always orthogonal to the rest plane during handling of the stretcher, with the front wheels and the rear wheels configured to rest through rolling contact on the rest plane and with each front wheel or rear wheel pivoting in a free or controlled and/or lockable manner around the respective first pivot axis.