Blunt tip surgical cutting device and method
AssigneeKyphon SARL
InventorsAmy L. Arthur, Calin Druma, Michael A. Smith
Life of this patent
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Abstract
A cutting device includes an elongated shaft extending between a proximal end and a distal end. A lower portion extends from the distal end of the elongated shaft and includes an outer surface and an inner surface spaced apart from the outer surface which together form a blunt end configured as a stop so as to protect adjacent tissue. An upper portion extends from the distal end of the elongated shaft and including an inner surface. The upper portion is configured so as to be disposed opposite the lower portion. A cutting element is disposed between the lower portion and the upper portion and is configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue.
Claims20
A cutting device comprising:
- an elongated shaft extending between a proximal end and a distal end;
- a lower portion extending from the distal end of the elongated shaft and including an outer surface and an inner surface spaced apart from the outer surface and together forming a blunt end configured as a stop so as to protect adjacent tissue;
- an upper portion extending from the distal end of the elongated shaft including an inner surface, the upper portion configured so as to be disposed opposite the lower portion;
- and
- a cutting element disposed between the lower portion and the upper portion and configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue.
A cutting device for cutting tissue comprising:
- an elongated shaft extending between a proximal end and a distal end;
- a lower portion extending from the distal end of the elongated shaft and including an outer surface and an inner surface spaced apart from the outer surface and together forming a blunt end configured as a stop so as to protect adjacent tissue;
- an upper portion extending from the distal end of the elongated shaft including an inner surface, the upper portion configured so as to be disposed opposite the lower portion;
- a cutting element being resiliently biased between the lower portion and the upper portion and configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue;
- and
- an attachment to a vacuum disposed at the proximal end of the elongated shaft to produce suction so as to remove tissue from the cavity.
A method of cutting tissue comprising:
- inserting a cannula to form a hole in the tissue;
- inserting a cutting device through the cannula, the cutting device comprising:
- an elongated shaft extending between a proximal end and a distal end;
- a lower portion extending from the distal end of the elongated shaft and including an outer surface and an inner surface space apart from the outer surface and together forming a blunt end configured as a stop so as to protect adjacent tissue;
- an upper portion extending from the distal end of the elongated shaft including an inner surface, the upper portion configured so as to be disposed opposite the lower portion;
- a cutting element being resiliently biased between the lower portion and the upper portion and configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue;
- and
- an attachment to a vacuum disposed at the proximal end of the elongated shaft to produce suction so as to remove tissue from the cavity;
- sliding the blunt tip along a lamina of a patient to prevent damage to tissue;
- compressing a spring of the spring loaded cutting tip to extend the cutting tip beyond the upper and lower arms to cut tissue;
- retracting the cutting tip into the cavity;
- and
- removing the cutting device and the cannula.
Dependencies are inferred from the claim text.