An auxiliary tool for surgery includes an auxiliary tool main body part, and a first leg pair located on the auxiliary tool main body part. A tail end of the first leg pair is connected to the auxiliary tool main body part, a first mounting part is formed at a front end of the first leg pair, and the first mounting part is configured to clamp and press a surgical device to place the surgical device in a predetermined position.

An auxiliary tool for surgery includes an auxiliary tool main body part, and a first leg pair located on the auxiliary tool main body part. A tail end of the first leg pair is connected to the auxiliary tool main body part, a first mounting part is formed at a front end of the first leg pair, and the first mounting part is configured to clamp and press a surgical device to place the surgical device in a predetermined position.

A foldable plastic-steel chair comprises a seat board assembly, a backrest, and a metal supporting frame. The seat board assembly and the backrest are connected to the metal supporting frame, and the seat board assembly comprises a seat board. The seat board comprises a surface plate and a surrounding edge connected to a periphery of the surface plate and extending downward, and the seat board is a vacuum-formed plastic board. The seat board assembly further comprises a metal frame abutting a periphery of seat board, and a bottom end of the metal frame is bent outward to form a hook. A lower end portion of the surrounding edge of the seat board is disposed in the hook, and a portion of the metal frame abuts an inner side of the surrounding edge. The hook is fixedly clamped to a lower edge of the surrounding edge.

A foldable plastic-steel chair comprises a seat board assembly, a backrest, and a metal supporting frame. The seat board assembly and the backrest are connected to the metal supporting frame, and the seat board assembly comprises a seat board. The seat board comprises a surface plate and a surrounding edge connected to a periphery of the surface plate and extending downward, and the seat board is a vacuum-formed plastic board. The seat board assembly further comprises a metal frame abutting a periphery of seat board, and a bottom end of the metal frame is bent outward to form a hook. A lower end portion of the surrounding edge of the seat board is disposed in the hook, and a portion of the metal frame abuts an inner side of the surrounding edge. The hook is fixedly clamped to a lower edge of the surrounding edge.

A folding chair that includes a seat portion, a first frame, the first frame including a back and two first parallel legs, the two first legs being monolithic with the back, the first frame being hinged to the seat portion at the two first legs on two opposite sides of the perimetric edge of the seat portion, and a second frame, the second frame including two second parallel and mutually integral legs, the second frame being pivoted to the first frame at two crossing regions of one of the second legs with a respective one of the first legs.

A folding chair that includes a seat portion, a first frame, the first frame including a back and two first parallel legs, the two first legs being monolithic with the back, the first frame being hinged to the seat portion at the two first legs on two opposite sides of the perimetric edge of the seat portion, and a second frame, the second frame including two second parallel and mutually integral legs, the second frame being pivoted to the first frame at two crossing regions of one of the second legs with a respective one of the first legs.

Various embodiments of the present disclosure relate to folding furniture, and more specifically, to folding chairs with the ability to support their own weight and stand while in a folded position. In an embodiment, a folding chair configurable in an unfolded position and a folded position comprises a first leg assembly, a second leg assembly, a seat, and a chair back fixed between the first and second leg assemblies. The first and second leg assemblies each comprise an outer leg pivotally coupled with an inner leg, such that in the folded or unfolded positions, the first and second leg assemblies support the folding chair. The seat comprises a support bar and is pivotally coupled with each inner leg of the first and second leg assemblies, such that in the unfolded position, the seat provides support for a person when the support bar contacts a portion of the first outer leg and a portion of the second outer leg preventing overextension of the seat. In the folded position, the seat lies perpendicularly with the ground and provides a counterweight to allow the folding chair to stand on the first leg assembly and second leg assembly.

A foldable chair, comprises a foldable chair frame (10) and a chair seat (1) made of a flexible material; the chair frame (10) comprising an X-shaped left support frame (101), an X-shaped right support frame (102) connected through a connecting crossbar (3), the chair seat (1) is connected to the chair frame (10) through a plurality of connecting pieces; a detachable pole (2) extends from top to bottom of the chair frame (10), and the connecting crossbar (3) has two first through holes (34) for the poles (2) to pass through; correspondingly, the connecting crossbar (3) has two second through holes (33) for a plurality of support tubes (100) to pass through; each pole (2) and the corresponding support tube (100) forms the X-shaped left or right support frame. This chair has the advantages of simple and reasonable structure, easy installation and disassembly, simple manufacture process and low cost, and is especially suitable for carrying around when traveling.

A flexible backrest for a folding chair includes a flexible backrest panel which can assume a curved configuration of use and an extended storage configuration. The flexible backrest panel has a support surface having a concave shape in a cross-section in a horizontal plane, and a convex shape in a cross-section in a vertical plane; and the flexible backrest panel has a plurality of vertical through-slits forming a plurality of vertical slats.

A foldable chair, comprises a foldable chair frame (10) and a chair seat (1) made of a flexible material; the chair frame (10) comprising an X-shaped left support frame (101), an X-shaped right support frame (102) connected through a connecting crossbar (3), the chair seat (1) is connected to the chair frame (10) through a plurality of connecting pieces; a detachable pole (2) extends from top to bottom of the chair frame (10), and the connecting crossbar (3) has two first through holes (34) for the poles (2) to pass through; correspondingly, the connecting crossbar (3) has two second through holes (33) for a plurality of support tubes (100) to pass through; each pole (2) and the corresponding support tube (100) forms the X-shaped left or right support frame. This chair has the advantages of simple and reasonable structure, easy installation and disassembly, simple manufacture process and low cost, and is especially suitable for carrying around when traveling.