Manual lifting sling device

1. A manual lifting sling device, preferably made of a fabric,

comprising a bottom support portion for supporting buttocks and legs of a user, a rear side support portion for supporting the user's back, a left side retainer portion and a right side retainer portion respectively arranged at the left side and the right side and connected with both the bottom support portion and the rear side support portion, and at least two lift handles arranged respectively at each of the left side retainer portion and the right side retainer portion; and

a left foldable portion arranged at the left side and respectively connected with the left side retainer portion, the bottom support portion and the rear side support portion; and a right foldable portion arranged at the right side and respectively connected with the right side retainer portion, the bottom support portion and the rear side support portion;

wherein the manual lifting sling device is configured to be switchable between a standby state substantially in form of a two-dimensional sheet and an operation state substantially in form of a three-dimensional seat preferably via a predetermined transformation of the left foldable portion and/or the right foldable portion, and/or a predetermined operation or motion of the handle.

2. The manual lifting sling device according to claim 1 , wherein while in the standby state the manual lifting sling device is configured to be in a fully or at least partially unfolded configuration having its entirety or at least one preset active portion being in a flat state for facilitating rolling up operation, stacking operation, storage operation, transport operation, and/or operation for insertion underneath the user; and preferably, the left foldable portion, the right foldable portion, the bottom support portion, the rear side support portion, the left side retainer portion, and/or the right side retainer portion are coplanar.

3. The manual lifting sling device according to claim 1 , wherein while in the operation state the manual lifting sling device is configured to be in a partially folded configuration with its entirety being in a three-dimensional state for facilitating seating and/or transport operations of the user; and preferably, the bottom support portion and the rear side support portion are intersected at a first predetermined inclination angle, and both of them are further intersected with the left side retainer portion and the right side retainer portion at a second predetermined inclination angle; and preferably the left side retainer portion and the right side retainer portion are further arranged opposingly and in parallel to each other; and preferably, each of the left and right foldable portions is folded respectively along its center axis and selectively further folded toward respective retainer portions and fixed thereto.

4. The manual lifting sling device according to claim 1 , wherein the left and right foldable portions are respectively arranged at transverse ends or ends in width direction of the manual lifting sling device and/or respective centre portions of the left side and/or right side retainer portions; while in the standby state the left foldable portion and/or the right foldable portion being in the unfolded configuration and in coplanar with the bottom support portion, the rear side support portion, the left side retainer portion, and the right side retainer portion; and/or a profile/contour of the left foldable portion and/or the right foldable portion is protruded transversely from respective profiles/contours of respective retainer portions; while in the operation state the left foldable portion and/or the right foldable portion being in the folded or overlapped configuration in which the left foldable portion and the right foldable portion might then be respectively connected firmly with or completely engaged with or in parallel with the left side retainer portion and the right side retainer portion preferably by hook and loop fasteners; and/or the profile/contour of the left foldable portion and/or the right foldable portion is preferably incorporated with respective profiles/contours of respective retainer portions and thus being visually hidden or in a concealed state.

5. The manual lifting sling device according to claim 1 , wherein the left foldable portion and/or the right foldable portion further comprise a guide suture, a pre-folded line, and/or a stiffening strip, such that it tends to be converted automatically to the folded or overlapped configuration while in the operation state.

6. The manual lifting sling device according to claim 1 , wherein an edge of the left foldable portion, the right foldable portion, the bottom support portion, the rear side support portion, the left retainer portion, and/or the right side retainer portion is folded, pre-folded, and/or stiffened; and/or the left foldable portion, the right foldable portion, the bottom support portion, the rear side support portion, the left side retainer portion, and the right side retainer portion are integrally formed preferably by sewing.

7. The manual lifting sling device according to claim 1 , wherein the bottom support portion, the rear side support portion, the left side retainer portion, the right side retainer portion, the left foldable portion, and/or the right foldable portion being cut to fit human body and provided with a fold.

8. The manual lifting sling device according to claim 1 , wherein the fabric comprises an identification; and/or the fabric comprises a layer of textile or nonwoven film, or a composite layer formed by laminating multiple layers of textile or nonwoven film.

9. The manual lifting sling device according to claim 1 , wherein one side, or both sides, or a top surface, and/or a bottom surface of the fabric comprise an air permeable non-biodegradable or biodegradable film.

10. The manual lifting sling device according to claim 1 , wherein the fabric comprises a thermally bonded non-biodegradable or biodegradable randomly oriented fiber; and/or a continuous filament web or a short fiber web formed by spunlace or needle punch.

11. The manual lifting sling device according to claim 1 , wherein the fabric comprises a continuous filament web or a short fiber web formed by bonding of a non-biodegradable or biodegradable chemical, and the chemical comprises a latex binder and/or adhesive.

12. A method for preventing cross-infections between patients being conveyed, characterized in that, having each of patients provided with and conveyed by the manual lifting sling device according to claim 1 .