Instrument for inserting an intramedullary nail in a bone
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsMoritoshi Itoman, Satoshi Ojima
Life of this patent
Estimating the term…
Abstract
An intramedullary nail inserting and mounting instrument includes a base portion which can be mounted to one end of an intramedullary nail inserted in bone marrow of a pair of bone pieces of a fractured bone to be interconnected, a guide shaft portion which is integrally provided on the base portion and which extends in the direction of an extension of the intramedullary nail, a pressing member which is movable along the guide shaft portion to come into contact with one end of one of the bone pieces, and a pressing member moving device which moves the pressing member along the guide shaft portion. The disclosure also addresses a method for inserting and securing the intramedullary nail to the fractured bone using the mounting instrument.
Claims19
An intramedullary nail inserting and mounting instrument comprising:
- a base portion which can be mounted to one end of an intramedullary nail, the intramedullary nail being inserted in the bone marrow or the pair of bone pieces of a fractured bone to be interconnected;
- a guide shaft portion integrally provided on said base portion and extending in a direction of extension of the intramedullary nail;
- a pressing member which is movable along said guide shaft portion to contact one end of one of the bone pieces;
- and
- means for moving said pressing member along said guide shaft portion said pressing member moving means comprising a threaded portion provided on an outer peripheral surface of said guide shaft portion in a threaded hole formed in said pressing member, so that said threaded portion of said guide shaft portion can be screwed-engaged in said threaded hole of said pressing member.
An intramedullary nail inserting and mounting instrument comprising:
- a base portion mountable to one end of an intramedullary nail, the intramedullary nail being inserted in the bane marrow of a pair of bone pieces of a fractured bone to be interconnected;
- said base portion comprising:
- a guide shaft portion extending in a longitudinal direction of the intramedullary nail;
- a supporting member for supporting said guide shaft portion;
- and
- an arm;
- wherein said guide shaft portion, said supporting member and said arm are integrally formed;
- said guide shaft portion comprising a cylindrical member including an axial hole extending along a longitudinal direction of the intramedullary nail;
- a screw member insertable in said axial hole, said screw member having a male thread to be screwed-engaged in said one end of the intramedullary nail;
- a pressing member movable along said guide shaft portion to contact one end of one of the bone pieces;
- and
- means for moving said pressing member along said guide shaft portion.
An intramedullary nail inserting and mounting instrument comprising:
- a base portion which can be mounted to one end of an intramedullary nail, the intramedullary nail inserted in a pair of bone pieces to be interconnected;
- a guide shaft portion coupled to said base portion and extending in a longitudinal direction of the intramedullary nail;
- a pressing member which is movable along said guide shaft portion to contact an end of one of the pair of bone pieces;
- and
- means for moving said pressing member along said guide shaft portion.
Dependencies are inferred from the claim text.