MATERIAL DELIVERY APPARATUS FOR A BONE SCREW
A material delivery apparatus for a bone screw includes an attachment member having a lumen disposed therethrough and adapted to removably attach to the bone screw. The apparatus further includes a delivery cannula fixedly disposed through the lumen and adapted to extend into a central bore of the bone screw for the delivery of material thereinto.
1 . A material delivery apparatus for a bone screw, comprising:
an attachment member having a lumen disposed therethrough and adapted to removably affix to the bone screw; and
a delivery cannula fixedly disposed through the lumen and adapted to extend into a central bore of the bone screw for the delivery of material thereinto.
2 . The material delivery apparatus of claim 1 , wherein the attachment member includes an attachment mechanism proximate a proximal end thereof.
3 . The material delivery apparatus of claim 2 , wherein the attachment mechanism comprises first threads adapted to engage second threads disposed on a body member of the bone screw.
4 . The material delivery apparatus of claim 3 , wherein the attachment member includes a proximal flange including an annular wall extending distally therefrom, and the first threads are disposed on a luminal surface of the annular wall.
5 . The material delivery apparatus of claim 1 , wherein the delivery cannula includes a transverse peripheral groove disposed in an abluminal surface thereof, wherein the transverse peripheral groove is adapted to accommodate a sealing ring disposed within the groove.
6 . The material delivery apparatus of claim 1 , wherein the attachment member includes a transverse peripheral groove disposed in an abluminal surface thereof, wherein the transverse peripheral groove is adapted to accommodate a sealing ring disposed within the groove.
7 . The material delivery apparatus of claim 6 , wherein the groove is disposed proximate a distal end of the attachment mechanism at a position adapted to be within a recess in a head of the bone screw when the material delivery apparatus is attached to the bone screw.
8 . A material delivery apparatus for a bone screw, comprising:
an attachment member having a lumen disposed therethrough and first threads disposed thereon adapted to engage second threads disposed on the bone screw;
a delivery cannula fixedly disposed within the lumen and adapted to deliver material into a central bore of the bone screw; and
a transverse peripheral groove disposed in an abluminal surface of the material delivery apparatus, wherein the transverse peripheral groove is adapted to accommodate a sealing ring disposed within the groove.
9 . The material delivery apparatus of claim 8 , wherein the attachment member includes a proximal flange including an annular wall extending distally therefrom, and the first threads are disposed on a luminal surface of the annular wall.
10 . The material delivery apparatus of claim 8 , wherein transverse peripheral groove is disposed in an abluminal surface of the attachment member.
11 . The material delivery apparatus of claim 10 , wherein the transverse peripheral groove is disposed proximate a distal end of the attachment member at a position adapted to be within a recess in a head of the bone screw when the material delivery apparatus is attached to the bone screw.
12 . The material delivery apparatus of claim 8 , wherein the delivery cannula is fixedly disposed through the lumen and adapted to extend into a central bore of the bone screw for the delivery of material thereinto.
13 . The material delivery apparatus of claim 12 , wherein the transverse peripheral groove is disposed in an abluminal surface of the delivery cannula.
14 . The material delivery apparatus of claim 13 , wherein a second transverse peripheral groove is disposed in an abluminal surface of the attachment member, wherein the second transverse peripheral groove is adapted to accommodate a sealing ring disposed within the groove.
15 . A material delivery system for a bone screw, comprising:
an attachment member having a lumen disposed therethrough and first threads disposed thereon adapted to engage second threads disposed on the bone screw;
a delivery cannula fixedly disposed through the lumen and adapted to extend into a central bore of the bone screw for the delivery of material thereinto;
a transverse peripheral groove disposed in an abluminal surface of the material delivery apparatus, wherein the transverse peripheral groove is adapted to accommodate a sealing ring disposed within the groove; and
a material delivery source that supplies material to the delivery cannula.
16 . The material delivery system of claim 15 , wherein the attachment member includes a proximal flange including an annular wall extending distally therefrom, and the first threads are disposed on a luminal surface of the annular wall.
17 . The material delivery system of claim 15 , wherein transverse peripheral groove is disposed in an abluminal surface of the delivery cannula.
18 . The material delivery system of claim 15 , wherein transverse peripheral groove is disposed in an abluminal surface of the attachment member.
19 . The material delivery system of claim 15 further comprising a handle fixedly attached to the delivery cannula.
20 . The material delivery system of claim 19 further comprising a fluid fitting attached to the delivery cannula proximal to the handle to control an amount of the material supplied by the material delivery source.