Patent ID: 8870887

Claim:
An injector for sealing a skull base defect in bony cranial anatomy, comprising: a) an elongated tubular cannula comprising: i) a body having a distal end and a proximal end, and a lumen extending axially from the distal end to the proximal end, ii) an expandable sheath on the distal end of the body comprising a plurality of rigid non-elastic material members connected by their proximal ends, with elastic material spanning the space between members, for creating a conical mold into which a compound can be injected; iii) a central member running through the lumen, being movable along a central axis of the lumen; and b) a plunger for pushing a compound through the lumen, such that operation of the plunger causes the compound to be injected from the distal end of the cannula into the conical mold formed by the expandable sheath.