Ultrasonic surgical blade with improved cutting and coagulation features
First Claim
Patent Images
1. An ultrasonic surgical blade, comprising:
- a solid body;
a longitudinal portion having a proximal end configured to couple to an ultrasonic transmission waveguide and a distal end configured to dissect and coagulate tissue, the longitudinal portion comprising;
a substantially planar longitudinal surface; and
a distal hemostasis surface located opposite of the substantially planar longitudinal surface, the distal hemostasis surface having a surface area S1 defined by a distal surface inflection, a first proximal surface inflection, and first and second lateral cutting edges extending from the distal surface inflection to the first proximal surface inflection, wherein the distal surface inflection defines a minimum width of the distal hemostasis surface and the first proximal surface inflection defines a maximum width of the distal hemostasis surface;
a transverse portion extending crosswise from the distal end of the longitudinal portion, the transverse portion defining a hook extending above the ultrasonic transmission waveguide having a free end configured to pull and dissect tissue, the transverse portion comprising;
a curved section extending from a distal end of the substantially planar longitudinal surface;
a tip surface defined at the free end;
a substantially planar proximal inner surface extending from the curved section to the tip surface; and
an outer concave distal surface extending from the tip surface to the distal hemostasis surface; and
a distal dissection edge defined at a surface inflection of the outer concave distal surface and the distal hemostasis surface.
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Abstract
An ultrasonic surgical blade with improved cutting and coagulation features is disclosed. The blade includes a solid body, a longitudinal portion having a proximal end configured to couple to an ultrasonic transmission waveguide and a transverse portion extending crosswise from the distal end of the longitudinal portion. At least one dissection edge and at least one hemostasis surface is provided on the blade. The transverse portion defines a hook having a free end configured to pull and dissect tissue. Also disclosed is an ultrasonic surgical blade that also includes a sharp central ridge and an end mass for acoustic balance.
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Citations
14 Claims
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1. An ultrasonic surgical blade, comprising:
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a solid body; a longitudinal portion having a proximal end configured to couple to an ultrasonic transmission waveguide and a distal end configured to dissect and coagulate tissue, the longitudinal portion comprising; a substantially planar longitudinal surface; and a distal hemostasis surface located opposite of the substantially planar longitudinal surface, the distal hemostasis surface having a surface area S1 defined by a distal surface inflection, a first proximal surface inflection, and first and second lateral cutting edges extending from the distal surface inflection to the first proximal surface inflection, wherein the distal surface inflection defines a minimum width of the distal hemostasis surface and the first proximal surface inflection defines a maximum width of the distal hemostasis surface; a transverse portion extending crosswise from the distal end of the longitudinal portion, the transverse portion defining a hook extending above the ultrasonic transmission waveguide having a free end configured to pull and dissect tissue, the transverse portion comprising; a curved section extending from a distal end of the substantially planar longitudinal surface; a tip surface defined at the free end; a substantially planar proximal inner surface extending from the curved section to the tip surface; and an outer concave distal surface extending from the tip surface to the distal hemostasis surface; and a distal dissection edge defined at a surface inflection of the outer concave distal surface and the distal hemostasis surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ultrasonic surgical blade, comprising:
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a solid body; a longitudinal portion having a proximal end and a distal end, the longitudinal portion comprising; a substantially planar longitudinal surface; and a distal hemostasis surface located opposite of the substantially planar longitudinal surface, the distal hemostasis surface having a surface area S1 defined by a distal surface inflection, a first proximal surface inflection, and first and second lateral cutting edges extending from the distal surface inflection to the first proximal surface inflection, wherein the distal surface inflection defines a minimum width of the distal hemostasis surface and the first proximal surface inflection defines a maximum width of the distal hemostasis surface; a transverse portion extending crosswise from the distal end of the longitudinal portion, the transverse portion defining a hook having a free end, the transverse portion comprising; a curved section extending from a distal end of the substantially planar longitudinal surface; a tip surface defined at the free end; a proximal inner surface extending from the curved section to the tip surface; and an outer concave distal surface extending from the tip surface to the distal hemostasis surface. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification