Accessory for bone surgery, advantageously for operative arthroscopy

An ancillary for bone surgery, advantageously for operative arthroscopy, operable for positioning and fixing a bone fragment on a target bone surface,

• wherein said ancillary (1) comprises:
• (i) at least one operating handle (2),
• (ii) a sighting body (3) comprising—two opposite end faces, a front one (31) and a rear one (32), and—at least one sighting hole (37) that opens to said two end faces (31, 32), for guiding at least one screw and/or pin intended to be implanted into said bone fragment (F) and into said target bone surface (S),
• (iii) a feeler element (4), protruding from the front end face (31) of said sighting body (3) and having a lower face (411) intended to bear against a part of said target bone surface (S),
• wherein said front end face (31) of said sighting body (3) and said lower face (411) of said feeler element (4) form together a dihedral receiving surface (D) against which said bone fragment (F) is intended to bear,
• wherein said ancillary (1) comprises pressing means (5) operable for temporarily holding said bone fragment (F) bearing against said dihedral receiving surface (D),
• wherein the feeler element (4) cooperates with said sighting body (3) through height adjustment means (45), along a second translation axis (A) directed perpendicular to the axis (37′) of said at least one sighting hole (37).

A system of ancillaries, capable of being coupled to an arthroscopy, comprising:

• (i) at least one first ancillary (1), advantageously for operative arthroscopy, operable for positioning and fixing a bone fragment on a target bone surface,
• wherein said ancillary (1) comprises:
• at least one operating handle (2),
• a sighting body (3) comprising—two opposite end faces, a front one (31) and a rear one (32), and—at least one sighting hole (37) that opens to said two end faces (31, 32), for guiding at least one screw and/or pin intended to be implanted into said bone fragment (F) and into said target bone surface (S),
• a feeler element (4), protruding from the front end face (31) of said sighting body (3) and having a lower face (411) intended to bear against a part of said target bone surface (S),
• wherein said front end face (31) of said sighting body (3) and said lower face (411) of said feeler element (4) form together a dihedral receiving surface (D) against which said bone fragment (F) is intended to bear,
• wherein said ancillary (1) comprises pressing means (5) operable for temporarily holding said bone fragment (F) bearing against said dihedral receiving surface (D),
• (ii) at least one second ancillary (6) of the gripper/screwdriver type,
• wherein said at least one second ancillary (6) comprises:
• an upstream portion (61), intended to enter said sighting hole (37) of the sighting body (3) and to protrude at said front end face (31), which comprises an upstream end (611) forming a drilling/screwing head (6111) and a progressive thread profile (6112), and
• a downstream portion (62), intended to cooperate with a rotational operation member,
• an abutment structure (63) arranged between said upstream (61) and downstream (62) portions, adapted to come into abutment against the rear end face (32) of the sighting body (3), and
• a central channel (64), arranged coaxially to said second ancillary (6), adapted to the passage of a pin (7).