Surgical instrument with telescoping nose mechanism
AssigneeStryker Corporation
InventorTimothy J. Bozung
Life of this patent
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Abstract
A surgical instrument comprises a hand-held portion configured to be manipulated by a user and a pivoting portion operatively coupled to the hand-held portion. The pivoting portion is configured to pivot with respect to the hand-held portion according to first and second degrees of freedom. The pivoting portion includes a telescoping nose mechanism including a nose tube, an intermediate unit having a carriage extending from the nose tube to enable linear translation of the nose tube, and a drive motor cooperating with the carriage to linearly translate the nose tube relative to the hand-held portion with respect to a third degree of freedom.
Claims21
A surgical instrument comprising:
- a hand-held portion configured to be manipulated by a user;
- a pivoting portion operatively coupled to said hand-held portion and being configured to pivot with respect to said hand-held portion according to first and second degrees of freedom;
- and
- wherein said pivoting portion includes an accessory drive motor coupled with and being configured to rotate an intermediate shaft, and said pivoting portion includes a telescoping nose mechanism including:
- a nose tube;
- an intermediate unit including:
- a plurality of leadscrews each comprising a first end and a driven gear fixed at said first end;
- and
- a carriage extending from said nose tube and including a central aperture axially extending through said carriage, and said carriage being configured to interface with and linearly translate along each of said leadscrews;
- a linear drive motor configured to rotate a drive gear, said drive gear configured to cooperate with each of said driven gears to enable rotation of each of said leadscrews to linearly translate said carriage and said nose tube relative to said hand-held portion with respect to a third degree of freedom;
- and
- wherein said intermediate shaft extends through and is configured to rotate within said central aperture of said carriage.
Dependencies are inferred from the claim text.