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US 12,108,958 B2Granted
Disposable burr attachment
AssigneeDePuy Synthes Products, Inc.
InventorsEddy H. del Rio, Douglas A. Perry
Life of this patent
Estimating the term…
Abstract
A burr attachment designed for use with a curved burr attachment or other chuck attachments that includes a tube with a wire shaft supported therein and a coil spring surrounding said wire shaft and having each of the coils touch the outer periphery surface of the wire shaft and the inner peripheral surface of said tube to enhance cooling of said outer periphery of said tube from the heat generated by said wire shaft and attenuate vibrations while allowing said burr attachment to be bent without kinking.
Claims19
A burr attachment comprising:
- an elongated tube;
- a wire shaft supported in said elongated tube;
- a coil wire mounted between an inner surface of said elongated tube and said wire shaft and surrounding said wire shaft;
- a proximal end support including a single body that receives a proximal end of said wire shaft and is rotatable therewith;
- a distal end support received within the single body of the proximal end support, the wire shaft extending through and rotatable with respect to a central opening extending through the distal end support, the central opening including a larger diameter bore defining a seat at a proximal end of the larger diameter bore, where a proximal end of the elongated tube abuts the seat;
- and,
- a cutter attached to said wire shaft and extending a precise distance from an end of said elongated tube,
- wherein said burr attachment is disposable and bendable so as to bend an axis of rotation without forming kinks therein, and
- wherein said coil wire is helically wound and each coil of said coil wire touches said inner surface of said elongated tube and an outer surface of said wire shaft for minimizing heat transfer from said wire shaft to said elongated tube.
6 more elements
A burr attachment comprising:
- an elongated tube;
- a wire shaft supported in said elongated tube;
- a cutter attached to said wire shaft and extending a precise distance from an end of said elongated tube;
- a coil wire mounted between an inner surface of said elongated tube and said wire shaft and surrounding said wire shaft;
- a proximal end support disposed at a proximal end of said wire shaft, said proximal end support receiving said wire shaft and rotatable therewith, said proximal end support including:
- a main body having a generally cylindrical shape, the main body adjacent a first end of the proximal end support;
- a tip portion formed opposite the main body adjacent a second end of the proximal end support;
- an annular groove formed intermediate the first and second ends of the proximal end support between the main body and the tip portion;
- and
- a flat formed on the tip portion such that said proximal end support is capable of being inserted into a chuck driven by a motor for imparting rotary motion thereto;
- and
- a distal end support received within the proximal end support, said distal end support including:
- a distal end support main body having a generally cylindrical shape, an outer surface of said distal end support main body including:
- a larger diameter portion extending from a first end of the distal end support main body toward the reduced diameter portion;
- and
- a reduced diameter portion formed adjacent a second end of said distal end support main body;
- a flat formed on the larger diameter portion of the distal end support main body, and a slot formed on the flat adjacent to the reduced diameter portion of the distal end support main body,
- wherein the wire shaft extends through and is rotatable with respect to a central opening extending through the distal end support, the central opening including a larger diameter bore defining a seat at a proximal end of the larger diameter bore, where a proximal end of the elongated tube abuts the seat;
- wherein said proximal end support is rotary relative to said distal end support,
- wherein said burr attachment is capable of being removably attached to a chuck.
17 more elements
A burr attachment adapted to be supported in a chuck having rotary motion, said burr attachment comprising:
- an elongated tube;
- a wire shaft supported in said elongated tube;
- a fixed coil wire mounted between an inner surface of said elongated tube and said wire shaft and surrounding said wire shaft;
- a proximal end support disposed at a proximal end of said wire shaft, said proximal end support receiving said wire shaft and rotatable therewith;
- and
- a distal end support received within the proximal end support, the wire shaft extending through and rotatable with respect to a central opening extending through of the distal end support, the central opening including a larger diameter bore defining a seat at a proximal end of the larger diameter bore, where a proximal end of the elongated tube abuts the seat, said distal end support being rotatable relative to said proximal end support, an outer surface of the distal end support including:
- a reduced diameter portion;
- a large diameter portion;
- a flat formed on a periphery of said large diameter portion;
- and
- a slot formed on the flat and extending along said flat.
8 more elements
A burr attachment comprising:
- an elongated tube;
- a wire shaft supported in said elongated tube;
- a coil wire mounted between an inner surface of said elongated tube and said wire shaft and surrounding said wire shaft;
- a proximal end support including a single body that receives a proximal end of said wire shaft and is rotatable therewith, and
- a distal end support received within the single body of the proximal end support, the wire shaft extending through and rotatable with respect to a central opening extending through the distal end support, the central opening including a larger diameter bore defining a seat at a proximal end of the larger diameter bore, where a proximal end of the elongated tube abuts the seat,
- wherein said burr attachment is disposable and bendable so as to bend an axis of rotation without forming kinks therein,
- wherein the elongated tube includes a central opening extending therethrough, the central opening of the elongated tube including a main diameter portion and a narrowed diameter portion along a distal end portion of the central opening of the elongated tube, and
- wherein the coil wire is mounted within the central opening of the elongated tube between the narrowed diameter portion of the central opening of the elongated tube and the seat defined at the proximal end of the larger diameter bore of the distal end support.
5 more elements
Dependencies are inferred from the claim text.