A medical instrument includes two pivotally coupled branches. Each branch has a handling portion and a jaw portion. The jaw portions form a mouth which is movable between a closed state, in which the jaw portions are moved inwardly, and an open state, in which the jaw portions are moved outwardly. At least one branch includes a branch member and jaw member. The branch member includes one of the handling portions and a coupling. The jaw member forms one of the jaw portions and has a complementary coupling. The coupling and complementary coupling form a releasable connection to exchangeably attach the jaw member to the branch member. The coupling includes two wedge surfaces opposing each other along a medial/lateral axis. The wedge surfaces are inclined proximally toward each other by a first angle of inclination, and inclined inwardly toward each other by a second angle of inclination.

Foldable, multipurpose shears can have a pair of shearing blades, each blade having a sharp side and a blunt side. The blades are connected to handles via a hinge, and the handles have one side that is straighter and another side that is more rounded or irregularly shaped. One of the blades includes a backward facing hook on the blade's blunt side. Additionally, the blunt side may have partially sharpened serrations. The blades can fold about the hinge for easier transport and storage and the shears are configured so that the hook does not extend past the handles when folded.

Foldable, multipurpose shears can have a pair of shearing blades, each blade having a sharp side and a blunt side. The blades are connected to handles via a hinge, and the handles have one side that is straighter and another side that is more rounded or irregularly shaped. One of the blades includes a backward facing hook on the blade's blunt side. Additionally, the blunt side may have partially sharpened serrations. The blades can fold about the hinge for easier transport and storage and the shears are configured so that the hook does not extend past the handles when folded.

The present application discloses an anti-loosening structure, a folding knife and scissors applying same, wherein the anti-loosening structure includes a rotating shaft, a locking screw and a locking element. The rotating shaft is D-shaped, and the locking element is arranged on the rotating shaft which is static relative to the rotating shaft. The locking screw is arranged inside the rotating shaft and is threadedly connected with the rotating shaft or the locking element. The rotating shaft has a first end and a second end, wherein a limiting part is arranged on the first end of the rotating shaft, and the locking element is set on the outer side of the second end of the rotating shaft and is threadedly connected with the second end.

The present application discloses an anti-loosening structure, a folding knife and scissors applying same, wherein the anti-loosening structure includes a rotating shaft, a locking screw and a locking element. The rotating shaft is D-shaped, and the locking element is arranged on the rotating shaft which is static relative to the rotating shaft. The locking screw is arranged inside the rotating shaft and is threadedly connected with the rotating shaft or the locking element. The rotating shaft has a first end and a second end, wherein a limiting part is arranged on the first end of the rotating shaft, and the locking element is set on the outer side of the second end of the rotating shaft and is threadedly connected with the second end.

The present invention relates to scissors, more specifically to a distance adjusting device for scissors that is configured to have a fixing part passing through an open portion of a first scissor blade and a second scissor blade to couple the first scissor blade and the second scissor blade to each other, a pair of ball bearings adapted to allow the fixing part to be inserted thereinto, a thrust bearing disposed between the pair of ball bearings, and pressurizing bars inserted into one side of the first scissor blade to pressurize the thrust bearing.