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US 12,471,943 B2Granted
Laparoscopic tissue cutting device
AssigneeCovidien LP
InventorsRoy J. Pilletere, Jacob C. Baril, Matthew A. Dinino, Justin J. Thomas, Garrett P. Ebersole, Saumya Banerjee, Nicolette L. Roy
Life of this patent
Estimating the term…
Abstract
A tissue cutting device has a blade that pivots to pierce through tissue and translates to cut tissue, thereby providing a clean and smooth cut through tissue. The blade is coupled to an axial rod. Axial displacement of the axial rod pivots the blade and imparts axial displacement to the blade.
Claims20
A tissue cutting device comprising:
- an elongate shaft assembly including:
- an elongate shaft defining first and second lumens;
- and
- a support extending distally from the elongate shaft;
- an actuation assembly including:
- a pivoting rod slidably extending through the first lumen;
- and
- an axial rod slidably extending through the second lumen of the elongate shaft;
- and
- a blade assembly including:
- a blade to cut tissue;
- and
- a body supporting the blade, the body including a camming portion slidably engaging the support of the elongate shaft assembly, the body operatively coupled to the pivoting rod and the axial rod of the actuation assembly,
- wherein a first axial displacement of the axial rod pivots the blade between a closed configuration, in which, a distal portion of the blade engages the support of the elongate shaft assembly, and an open configuration, in which, the blade is pivoted to receive tissue between the blade and the support, and wherein a second axial displacement of the axial rod imparts concomitant axial displacement to the blade assembly to cut tissue.
11 more elements
A tissue cutting device comprising:
- an elongate shaft assembly including:
- an elongate shaft;
- and
- a support extending distally from the elongate shaft;
- an actuation assembly including a pivoting rod and an axial rod, each of the pivoting rod and the axial rod slidably extending through the elongate shaft, the pivoting rod in superposed relation with the axial rod;
- and
- a blade assembly including:
- a blade having a pointed tip;
- and
- a body supporting the blade and slidably engaging the support of the elongate shaft assembly, the body operatively coupled to the pivoting rod and the axial rod such that axial displacement of the axial rod pivots the blade to pierce through tissue and imparts axial displacement to the blade to cut tissue.
7 more elements
A tissue cutting device comprising:
- an elongate shaft assembly including a shaft and a support extending distally from the shaft;
- an actuation assembly including a pivoting rod and an axial rod slidably extending through the shaft of the elongate shaft assembly, the axial rod having a support pin extending therefrom;
- and
- a blade assembly including:
- a blade configured to cut tissue;
- and
- a body supporting the blade, the body defining a bore and including a pivot pin extending outwards therefrom, the pivot pin configured to engage at least one bore of the pivoting rod to operatively couple the body of the blade to the pivoting rod, the support pin of the axial rod configured to engage the bore of the body to operatively couple the body to the axial rod such that axial displacement of the axial rod of the actuation assembly pivots the blade to pierce through tissue and imparts axial displacement to the blade to cut tissue.
4 more elements
Dependencies are inferred from the claim text.