Ultrasonic surgical blade with improved cutting and coagulation features
First Claim
1. An ultrasonic surgical blade comprising:
- a flat bottom surface;
a top surface, wherein said top surface has a width greater than said bottom surface; and
a cutting-edge, wherein said cutting-edge is defined by a first cutting-surface intermediate said top surface and said bottom surface.
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Accused Products
Abstract
The present invention is directed to an ultrasonic surgical blade including a top surface, a bottom surface and a cutting-edge. The cutting-edge is defined by a cutting-surface intermediate the top surface and the bottom surface, and the top surface has a width greater than the width of the bottom surface. The blade may be straight or curved. In one embodiment of the invention, at least a portion of the cutting-surface is substantially parallel to at least a portion of the top surface. In still another embodiment of the invention first and second side-walls intersect the top surface to form first and second cutting-edges that may be sharp or blunt. Alternately, a second cutting-edge may be defined by a second cutting surface intermediate the top and bottom surfaces. Depending on the angle between the intermediate cutting-surface and the top surface, the cutting-edge may be sharp or blunt. In yet another embodiment of the present invention, a central ridge is provided on the bottom surface of the blade to eliminate blade burrowing and improve precision during coagulation. The cutting-edge is optimized to increase cutting speed of the blade while providing desirable hemostasis. The invention is of particular benefit for breast surgery, due to its cutting and coagulation characteristics.
546 Citations
24 Claims
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1. An ultrasonic surgical blade comprising:
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a flat bottom surface;
a top surface, wherein said top surface has a width greater than said bottom surface; and
a cutting-edge, wherein said cutting-edge is defined by a first cutting-surface intermediate said top surface and said bottom surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A curved ultrasonic surgical blade comprising:
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a bottom surface;
a top surface;
a cutting-edge, wherein said cutting-edge is defined by a first cutting-surface intermediate said top surface and said bottom surface; and
said top surface comprising a second cutting-surface intersecting said first cutting-surface at said cutting edge. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification