Disposable scalpel blade assembly and supporting reusable scalpel handle

摘要

Disposable scalpel blade assembly and supporting reusable handle. The blade assembly includes a blade, blade holder and blade shield. The blade holder has a flexible arm at the rear-end, which has a protrusion-block at the arm end. The blade shield inner wall has clearance opening for the protrusion-block. When the handle is inserted, the protrusion-block extends into the clearance opening with sideward movement, so the blade and blade holder are connected. After the handle is pulled-out, the protrusion-block misaligns with the clearance opening and cannot make sideward movement so the handle cannot connect again. The blade holder first sliding channel is provided with a first front locking channel at its front-end and a deadlock channel is set in front of the first front locking channel. When the handle is pulled-out after use, the first protrusion of the blade shield shall fall into the deadlock channel to enter the deadlocking state.

主权项

1. A disposable surgical blade assembly in which a handle can be inserted and removed but not re-inserted, the assembly comprising a blade, a blade holder and a blade shield, the blade being fixed in a front portion of the blade holder and the blade shield being slidably mounted on the blade holder, wherein:
the blade holder is provided with a flexible arm at its rear end which extends backward and is used to connect the handle to the assembly, the flexible arm is provided with a locking block and a protrusion block, the locking block being used for engagement with a second inclined block at a front end of the handle and the protrusion block is used to prevent the deformation of the flexible arm, the protrusion block extending towards an inner wall of the blade shield and the inner wall of blade shield being provided with a clearance opening for said protrusion block, in an initial locating state of said blade assembly, the protrusion block faces the clearance opening; when the handle is inserted into the blade assembly to be connected with the blade holder, the second inclined block acts on the locking block to force the flexible arm to be flexed and force the protrusion block to extend into the clearance opening with sideward movement and after the second inclined block travels across the locking block, the flexible arm automatically returns to initial position resiliently and the second inclined block engages the locking block to connect the handle and blade holder; during removal of the handle, the second inclined block draws the blade holder backward with respect to the blade shield through the locking block to force the protrusion block to misalign with the clearance opening, whereby the handle cannot be re-inserted into the blade assembly to be connected with blade holder as the protrusion block cannot make sideward movement through the clearance opening.