Collet and driveshaft interface for surgical driver accessory
AssigneeArthrex, Inc.
InventorsJohn Ryan Twomey, Joseph A. Fritz, Giuseppe Lombardo, George Diggs
Life of this patent
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Abstract
A wire or pin driver for a rotary surgical tool includes a driveshaft having a bore and extending along a longitudinal axis and a collet forming a cannula. The cannula extends from a proximal engagement portion disposed in the bore to a distal gripping end configured to engage an elongated shaft. At least one retaining insert extending between and engaging the proximal engagement portion of the collet and the driveshaft in the bore.
Claims20
A wire or pin driver for a rotary surgical tool comprising:
- a driveshaft having a bore and extending along a longitudinal axis;
- a collet forming a cannula extending from a proximal engagement portion disposed in the bore to a distal gripping end configured to engage an elongated shaft;
- and
- at least one retaining insert extending between and engaging the proximal engagement portion of the collet and the driveshaft in the bore.
A collet assembly for a surgical pin driver, the collet assembly comprising:
- a collet extending along a collet axis from a proximal engagement portion to a distal gripping end configured to engage a wire or pin, wherein the engagement portion forms an exterior mating surface comprising a plurality of exterior openings angularly spaced about the longitudinal axis;
- and
- a rotary shaft extending from a proximal drive interface to a collet interface comprising a bore extending along a drive axis, wherein the bore forms an interior mating surface comprising a plurality of interior openings formed in the collet interface, wherein the plurality of exterior openings and the plurality of interior openings are aligned and angularly spaced about the collet axis and the drive axis and receive a plurality of retaining inserts rotationally and axially coupling the collet to the rotary shaft.
A wire driver for a rotary surgical tool comprising:
- a driveshaft extending along a longitudinal axis and comprising a bore having an interior wall forming a collet interface and a plurality of receiving apertures formed through the collet interface;
- a collet forming a cannula extending from a proximal engagement portion disposed along the collet interface in the bore to a distal gripping end configured to engage a wire or pin, wherein the proximal engagement portion comprises a plurality of receiving pockets angularly aligned with the receiving apertures;
- a retaining insert extending through each of the receiving apertures and into the receiving pockets;
- and
- a retaining ring extending about the receiving openings formed in the collet interface of the driveshaft, wherein the retaining ring constrains the retaining insert within the receiving apertures and binds the retaining apertures generally aligned with the receiving pockets.
Dependencies are inferred from the claim text.