Cannulated fastener system
AssigneeSynthes USA, LLC
InventorsPaul Ciccone, Steven F. Murray
Life of this patent
Estimating the term…
Abstract
A cannulated fastener system is provided for orthopedic applications that include attaching bone plates to bone. The bone fastener has a cannulation with an inner shape. One or more screwdrivers is provided with a shaft having a shape that matches the cannulation of the fastener to rotationally fix the fastener to the screwdriver. In addition, the screwdrivers have a cutting blade that begins the drilling of a hole for the bone fastener. The screwdrivers may either be for use with a single fastener or have multiple fasteners loaded within a retaining sleeve for automatic or controlled dispensing.
Claims29
A bone fastener system comprising:
- at least a first fastener member and a second fastener member, each of the at least first and second fastener members having a distal tip, being threaded, and comprising a cannulation
- a screwdriver member having a first distal end, a second proximal end, and an intermediate portion located between the distal and proximal ends;
- the distal end of the screwdriver member comprising a cutting blade configured to drill a hole in bone;
- the intermediate portion of the screwdriver member having a first length that is received by the cannulation of the at least first and second fastener members such that the distal end of the screwdriver extends past the respective distal tips of said fastener members;
- wherein the intermediate member has an outer surface that is complementary with the cannulations of the at least first and second fastener members such that the intermediate member is rotationally fixed to at least the first and second fastener members while being simultaneously slidably translatable with respect to the at least first and second fastener members such that the first fastener member is driven into the bone as the cutting blade drills the hole in the bone.
A bone fastener system comprising:
- at least a first fastener member and a second fastener member, each fastener member having a distal tip and comprising a cannulation and
- a screwdriver member having a first end, a second end, and an intermediate portion, the first end comprising a cutting blade configured to drill a hole in bone, the intermediate portion having a length that slidably translates through the cannulations of the first fastener member and second fastener member so that the first end extends beyond the respective distal tips of the first fastener member and the second fastener member;
- wherein the intermediate portion has an outer surface that is complementary with the cannulations of the first fastener member and second fastener member, such that at least the first fastener member and the second fastener member are simultaneously 1) slidably translatable with respect to the screwdriver and 2) rotationally fixed with respect to the screwdriver.
Dependencies are inferred from the claim text.