Support Instrument with Modular Intramedullary Nail

Abstract

A supporting instrument with modular intramedullary nail comprising a plurality of intramedullary nails and a coupling module is presented. Each intramedullary nail is in a form of a long rod and has a coupling portion arranged between two ends of the intramedullary nail and an abutting surface along a longitudinal face of the intramedullary nail. The coupling module is mounted to the coupling portions of the plurality of intramedullary nails for the abutting surfaces of the plurality of intramedullary nails to abut against each other and assembling the plurality of intramedullary nails.

1 . A supporting instrument with modular intramedullary nail, comprising:
 a plurality of intramedullary nails, with each intramedullary nail in a form of a long rod and having a coupling portion arranged between two ends of each intramedullary nail and an abutting surface along a longitudinal face of each intramedullary nail; and   a coupling module mounted to the coupling portions of the plurality of intramedullary nails for the abutting surfaces of the plurality of intramedullary nails to abut against each other and assembling the plurality of intramedullary nails.   
     
     
         2 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein the coupling portion is in a form of a through hole penetrating the longitudinal faces of each intramedullary nail, and the coupling module is an insertion pin. 
     
     
         3 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein the coupling portion is in a form of a groove formed on the longitudinal faces of each intramedullary nail, and the coupling module is a C-shaped hook or a ring. 
     
     
         4 . The supporting instrument with modular intramedullary nail as claimed in  claim 3 , wherein the ring is made of memory metal. 
     
     
         5 . The supporting instrument with modular intramedullary nail as claimed in  claim 3 , wherein a width of the C-shaped hook or the ring is smaller than a width of the grooves for the C-shaped hook or the ring to firmly couple with. 
     
     
         6 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein each intramedullary nail has a rib and a groove on the abutting surface for the plurality of intramedullary nails to be assembled by oppositely moving in a direction wherein the rib and groove extends. 
     
     
         7 . The supporting instrument with modular intramedullary nail as claimed in  claim 6 , wherein a distal end of the rib away from the abutting surface is wider than a root end of the rib connecting with the abutting surface, and a bottom end of the groove is wider than an opening end of the groove. 
     
     
         8 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein each intramedullary nail has a cross-sectional view in the shape of a rectangle and a corner away from the abutting surface is pared off to form a round face. 
     
     
         9 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein each intramedullary nail is made of memory metal. 
     
     
         10 . The supporting instrument with modular intramedullary nail as claimed in  claim 1 , wherein an end of each intramedullary nail having a curve portion bent relative to other parts of each intramedullary nail, the curve portions of the plurality of intramedullary nails are set to extend in different directions to firmly abut against an inner surface of a medullary cavity. 
     
     
         11 . The supporting instrument with modular intramedullary nail as claimed in  claim 10 , wherein at least one screw is inserted into a gap between the curve portions of the plurality of intramedullary nails. 
     
     
         12 . An intramedullary nail, comprising:
 a body in a form of a long rod and having an abutting surface and two ends, with the abutting surface extending along a longitudinal face of the body for abutting against the abutting surface of another intramedullary nail; and   a coupling portion arranged between the two ends, and the coupling portion being a through hole or a groove.