Surgical instrument with telescoping attachment
AssigneeMedtronic, Inc.
InventorsRex W. Shores, James Q. Spitler, Dana A. Eskridge, Dennis L. Foster, Douglas W. Haight, Laura A. Kriese, Stephen G. Savage, Danny C. Riedel
Life of this patent
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Abstract
A surgical instrument for the dissection of bone and other tissue includes a spindle, a dissection tool and a coupler disposed between the spindle and the dissection tool. The coupler includes a tool collet and an attachment locking mechanism operable to permit tool collet operation and telescoping movement of an attachment tube with respect to the dissection tool. A method is also provided for convenient coupling of the dissection tool and adjustment of the attachment tube length.
Claims24
A method of assembling a surgical instrument, the method comprising:
- providing a motor assembly with a first tool chuck;
- providing a coupling assembly with a work shaft and a second tool chuck;
- providing an attachment tube;
- providing a dissection tool having a distal working portion and a proximal coupling portion;
- securing the coupling assembly to the motor assembly by engaging the work shaft with the first tool chuck;
- inserting the attachment tube into an axial bore of the coupling assembly to couple the attachment tube to the coupling assembly;
- inserting the proximal coupling portion of the dissection tool through the attachment tube and into the second tool chuck;
- locking the proximal coupling portion of the dissection tool in the second tool chuck;
- and
- translating the attachment tube along the dissection tool after locking the proximal coupling portion of the dissection tool in the second tool chuck to adjust an amount of the distal working portion of the dissection tool extending distally from the attachment tube,
- wherein the attachment tube comprises a groove extending axially along a proximal portion of the attachment tube,
- wherein the coupling assembly comprises a ball, and wherein the ball engages with the groove to provide tactile feedback.
A method of assembling a surgical instrument, the method comprising:
- securing a coupling assembly to a motor assembly by engaging a work shaft with a first tool chuck;
- inserting an attachment tube into an axial bore of the coupling assembly to couple the attachment tube to the coupling assembly;
- inserting a proximal coupling portion of a tool through the attachment tube and into a second tool chuck;
- locking the proximal coupling portion of the tool in the second tool chuck;
- and
- translating the attachment tube along the tool after locking the proximal coupling portion of the tool in the second tool chuck to adjust an amount of a working portion of the tool extending distally from the attachment tube,
- wherein
- the coupling assembly comprises a distal portion, a base, and a collar,
- the collar comprises a ball, and
- the ball engages with a groove in the base to provide tactile feedback for locking or unlocking the attachment tube to the coupling assembly.
A method of assembling a surgical instrument, the method comprising:
- securing an attachment base to a motor assembly of the surgical instrument;
- inserting an attachment tube into an axial bore of the attachment base to couple the attachment tube to the attachment base;
- locking a proximal coupling portion of a tool in a tool locking assembly coupled to the motor assembly by the attachment base;
- and
- allowing translation of the attachment tube along the tool after locking the proximal coupling portion of the tool in the tool locking assembly,
- wherein
- the tool locking assembly comprises a locking sleeve for locking the tool to the motor assembly,
- the locking sleeve comprises an extension member, and
- the extension member extends axially into the attachment tube to support the tool in the attachment tube.
Dependencies are inferred from the claim text.