Micro-surgical instrument for use as gripper of scissors

A microsurgical instrument for use as pincers or scissors, said microsurgical instrument comprising:

• two rigid longitudinal arms which are mutually pivoted about a defined transverse axis and have on the one hand respective proximal ends and on the other hand respective distal ends, said distal ends being longitudinally spaced with respect to said axis and adapted to co-operate in a pinching or cutting action, respectively, by relative rotation of the two arms about said axis in a first direction corresponding to a mutual approach of said distal ends, the arms having respective manual operation zones for relative rotation about said axis in said first direction whilst there is provided means for resilient urging of the arms into relative rotation about said axis in a second direction opposite to said first direction and corresponding to a mutual spacing of said distal ends,
• said axis being situated at the proximal ends of the arms, and said manual operation zones being situated between said axis and the distal ends of the arms,
• one of the arms has in a fixed manner, at its proximal end, at least one longitudinal lug arranged on a median plane perpendicular to said axis whilst the other arm has in a fixed manner, at its proximal end at least two longitudinal lugs arranged on respective median planes perpendicular to said axis, respectively on opposite sides of the mentioned longitudinal lug, and in that said longitudinal lugs are pierced on said axis with respective bores in which is engaged a common pivot pin.

A microsurgical instrument for use as pincers or scissors, said microsurgical instrument comprising:

• two rigid longitudinal arms which are mutually pivoted about a defined transverse axis and have on the one hand respective proximal ends and on the other hand respective distal ends, said distal ends being longitudinally spaced with respect to said axis and adapted to co-operate in a pinching or cutting action, respectively, by relative rotation of the two arms about said axis in a first direction corresponding to a mutual approach of said distal ends, the arms having respective manual operation zones for relative rotation about said axis in said first direction whilst there is provided means for resilient urging of the arms into relative rotation about said axis in a second direction opposite to said first direction and corresponding to a mutual spacing of said distal ends,
• said axis being situated at the proximal ends of the arms, said manual operation zones being situated between said axis and the distal ends of the arms,
• means for limiting mutual spacing of the distal ends of the arms, said means for limiting mutual spacing of the distal ends of the arms includes at least two abutment surfaces respectively fixed in the arms and situated at said proximal ends, approximately transversely, opposite each other in a circumferential direction centered on said axis and in a relative position such that they mutually approach or are spaced from each other, when, respectively, said distal ends mutually move apart or approach.

A microsurgical instrument for use as pincers or scissors, said microsurgical instrument comprising:

• two rigid longitudinal arms which are mutually pivoted about a defined transverse axis and have on the one hand respective proximal ends and on the other hand respective distal ends, said distal ends being longitudinally spaced with respect to said axis and adapted to co-operate in a pinching or cutting action, respectively, by relative rotation of the two arms about said axis in a first direction corresponding to a mutual approach of said distal ends, the arms having respective manual operation zones for relative rotation about said axis in said first direction whilst there is provided means for resilient urging of the arms into relative rotation about said axis in a second direction opposite to said first direction and corresponding to a mutual spacing of said distal ends,
• said axis being situated at the proximal ends of the arms, said manual operation zones being situated between said axis and the distal ends of the arms,
• means for limiting mutual spacing of the distal ends of the arms, said means for limiting mutual spacing of the distal ends of the arms includes at least two abutment surfaces respectively fixed in the arms and situated between said axis and said distal ends, opposite each other in a circumferential direction centered on said axis and in a relative position such that they mutually approach or are spaced from each other when, respectively said distal ends are mutually moved apart or together.