Tongspoon assembly for a biopsy forceps and biopsy forceps for the removal of brain tissue samples

摘要

Pliers spoon assembly (1) for a biopsy forceps, which is suitable for performing stereotactic brain biopsies, with a holding rod (2), at the proximal end of two tongs (3a, 3b) are arranged with the inner cavities (6a, 6b) of their spoon parts (4a 4b) facing each other and at the spoon parts (4a, 4b) facing away from the ends of the spoon legs (5a, 5b) are connected to the proximal end of the support rod (2) that the spoon parts (4a, 4b) for adjusting the pliers spoon assembly ( 1) from the open to the closed position against the restoring force of the elastic material of the spoon legs (5a, 5b) are movable toward each other, each Zangenlöffelarm has a side surface (10a, 10b) corresponding to the respective side surface (10a, 10b) of each another pliers spoon arm faces, and wherein in the closed position pliers spoons (3a, 3b) between the side surfaces (10a, 10b) of the spoon legs (5a, 5b) has a gap (12) is formed, characterized in that the pliers spoon assembly (1) consists of a homogeneous, one-piece material which extends without interruption of the spoon parts (4a, 4b) into the holding rod (2), and that of the spoon parts (4a, 4b) in a plane perpendicular to the plane (12) spanned by the gap (12) and extending in the longitudinal extension direction of the gap (12), a concave shape (13) is formed on the distal end of the gap (12) defining surface of the tong assembly (1) ) having.