Outer sheath and blade arrangements for ultrasonic surgical instruments
First Claim
1. A surgical instrument, comprising:
- a hollow sheath including an outer perimeter and an opening, wherein the hollow sheath defines a longitudinal axis;
a blade disposed at least partially within the hollow sheath and extending through the opening, wherein the blade comprises a tip and a cross-sectional shape adjacent to the tip that is a polygon, and wherein the tip projects away from the longitudinal axis and radially extends beyond the outer perimeter; and
at least one ultrasonic transducer operably coupled to the blade.
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Accused Products
Abstract
In various embodiments, a surgical instrument for operation in an aqueous environment is provided. In at least one embodiment, the surgical instrument may include a hollow sheath, a blade disposed at least partially within the hollow sheath and extending through an opening in the sheath, and at least one ultrasonic transducer operably coupled to the blade. The blade may include a polygonal cross-sectional shape and the tip may project away from the sheath'"'"'s longitudinal axis. In another embodiment, the surgical instrument may include a blade with suction disposed therethrough and at least one ultrasonic transducer operably coupled to the blade. The blade may include a cutting edge that is positioned over a blade opening. Also, the cutting edge may project away from the blade'"'"'s longitudinal axis.
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Citations
21 Claims
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1. A surgical instrument, comprising:
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a hollow sheath including an outer perimeter and an opening, wherein the hollow sheath defines a longitudinal axis; a blade disposed at least partially within the hollow sheath and extending through the opening, wherein the blade comprises a tip and a cross-sectional shape adjacent to the tip that is a polygon, and wherein the tip projects away from the longitudinal axis and radially extends beyond the outer perimeter; and at least one ultrasonic transducer operably coupled to the blade. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical instrument, comprising:
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a hollow sheath including an opening, wherein the hollow sheath defines a longitudinal axis; a blade disposed at least partially within the hollow sheath and extending through the opening, wherein the blade comprises; a pyramidal end comprising a plurality of planar faces, a plurality of non-rounded corners, and a pointed tip, wherein the pyramidal end projects away from the longitudinal axis; and a cross-sectional shape adjacent to the pyramidal end that is a polygon; and at least one ultrasonic transducer operably coupled to the blade. - View Dependent Claims (15, 16)
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17. A surgical instrument, comprising:
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a hollow sheath including an opening, wherein the hollow sheath defines a longitudinal axis; a blade disposed at least partially within the hollow sheath and extending through the opening, wherein the blade comprises a tip and a cross-sectional shape adjacent to the tip that is a quadrilateral, wherein the tip projects away from the longitudinal axis, and wherein the quadrilateral comprises pointed vertices; and at least one ultrasonic transducer operably coupled to the blade. - View Dependent Claims (18, 19, 20, 21)
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Specification