Release device for the clamps of a hand -held biopsy epistle

摘要

trigger for a sleigh (3) and a needle slit (4) of a hand -held biopsy epistle,where, in the longitudinal median axis of the hand piece, the biopsy part is arranged with a cutting cannula enclosing it coaxially,the biopsy valve and the cutting cannula in the handpiece can be moved from the resting position to a clamping position by means of a clamping pin (6),where, by means of the buckle (6) at the first lift, the sleeves of the main buckle (6) on the side of the central buckle (3) break against the effect of a buckle spring (13) in the buckle setting,t and is locked with a housing top (2) of the handpiece and with a subsequent second lift of the tensile sleeve (6) the needle lock located on the other side of the tensile sleeve (6)itten (4), which is associated with the biopsy part,against the action of a tension spring (14) from the rest position into a tension position and locked in it with the housing top (2) of the handpiece, and the central one,has intermediate longitudinal longitudinal longitudinal axis (6) means to ensure that the order in which the sleeve (3) and the needle section (4) are stretched is:first the sleigh (3) then the needle slits (4), is always adhered to and at least one spring -held release element is provided on the top of the housing,which is capable of unlocking the needle slit (4) first and then the sleeve (3) thereafter;that the distal inner side of the housing upper shell (2) is fitted with an penetration depth adjustment plate (7) with an intermediate part pointing to the proximal side (50) and the intermediate part (50) zwit has release hooks (56, 57) causing the release of the sleeve (3) and the needle loop (4);where the trigger hook (57) for the sleigh (3) is lower than the trigger hook (56) for the needle loop (4) and the needle loop (4) at the proximal end is one to the needle tablesuffering (3) showing tongue plate (32) on the carrier (31) having the reduced height of the trigger hook (57) after unlocking the needle slit (4),which is necessary for unlocking the sleigh (3).