Ultrasonic surgical instrument blades
First Claim
1. A surgical blade for a surgical instrument, the surgical instrument having a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency, the surgical blade comprising:
- a body portion comprising a first side, a second side, and a width defined between said first and second sides, wherein said body portion further comprises a center of gravity and a centerline extending through said center of gravity;
a step portion extending from said body portion, wherein said step portion comprises a first surface, a second surface, and a cutting edge situated intermediate said first and second surfaces, wherein said second surface faces away from said centerline, wherein said first surface extends at an angle through said centerline between a first plane including said cutting edge and a second plane which is parallel to said first plane, wherein said first surface is not parallel to said second surface, wherein said first and second surfaces are oriented such that there is an angle defined therebetween, wherein said blade is configured such that the relationship of;
4 Assignments
0 Petitions
Accused Products
Abstract
An ultrasonic surgical instrument including an ultrasonically actuated blade or end effector having a treatment portion. The blade can define a central axis and at least one axis which is transverse to the central axis, wherein the transverse axis can lie within a plane which is perpendicular, or normal, to the longitudinal axis and can define a cross-section of the treatment portion. Such a cross-section can include a central portion and a step extending from the central portion, wherein the central portion can comprise a width, and wherein the step can comprise a cutting edge. In at least one embodiment, the cutting edge can be defined by first and second surfaces which define an angle therebetween. In various embodiments, the position of the cutting edge and/or the angle between the cutting edge surfaces can be selected in order to balance the blade with respect to the transverse axis.
-
Citations
15 Claims
-
1. A surgical blade for a surgical instrument, the surgical instrument having a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency, the surgical blade comprising:
-
a body portion comprising a first side, a second side, and a width defined between said first and second sides, wherein said body portion further comprises a center of gravity and a centerline extending through said center of gravity; a step portion extending from said body portion, wherein said step portion comprises a first surface, a second surface, and a cutting edge situated intermediate said first and second surfaces, wherein said second surface faces away from said centerline, wherein said first surface extends at an angle through said centerline between a first plane including said cutting edge and a second plane which is parallel to said first plane, wherein said first surface is not parallel to said second surface, wherein said first and second surfaces are oriented such that there is an angle defined therebetween, wherein said blade is configured such that the relationship of; - View Dependent Claims (2, 3, 4, 5)
-
-
6. A surgical blade for a surgical instrument, the surgical instrument having a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency, the surgical blade comprising:
-
a body portion comprising a first side, a second side, and a width (w) defined between said first and second sides, wherein said body portion further comprises a center of gravity and a centerline extending through said center of gravity; a step portion extending from said body portion, wherein said step portion comprises a first surface, a second surface, and a cutting edge situated intermediate said first and second surfaces, wherein said second surface faces away from said centerline, wherein said first surface extends at an angle through said centerline between a first plane including said cutting edge and a second plane which is parallel to said first plane, wherein said first plane and said second plane are separated by a distance s, wherein said first surface is not parallel to said second surface, wherein said first and second surfaces are oriented such that there is an angle (α
) defined therebetween, and wherein a second distance (x) is defined between said second side of said body portion and said cutting edge. - View Dependent Claims (7, 8, 9)
-
-
10. A surgical blade for a surgical instrument, the surgical instrument having a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency, the surgical blade comprising:
-
a distal end; a proximal end; and a cross-section situated intermediate said distal end and said proximal end, wherein said cross-section is defined by a plane which is perpendicular to the longitudinal axis, wherein said cross-section is further defined by a centerline which lies in the plane, and wherein said cross-section comprises; a center portion; and a cutting portion extending from said center portion, wherein said cutting portion comprises a center of gravity which is positioned along said centerline, wherein said cutting portion further comprises a cutting edge which is not positioned along said centerline, wherein said cutting edge is positioned intermediate a first face and a first face of said cutting portion, and wherein said second face is oriented away from said centerline and said second face extends through said centerline. - View Dependent Claims (11, 12, 13)
-
-
14. A surgical blade for a surgical instrument, the surgical instrument having a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency, the surgical blade comprising:
-
a distal end; a proximal end; and a cross-section situated intermediate said distal end and said proximal end, wherein said cross-section is defined by a plane which is perpendicular to the longitudinal axis, wherein the plane is at least partially defined by a transverse axis which is perpendicular to the longitudinal axis, and wherein the cross-section comprises; a body portion having a first mass (MB1) positioned on a first side of said transverse axis and a second mass (MB2) positioned on a second side of said transverse axis; and a step portion having a first mass (MS1) positioned on said first side and a second mass (MS2) positioned on said second side, wherein MB1+MS1 is substantially equal to MB2+MS2, wherein said step portion further includes a cutting edge, wherein said cutting edge is not positioned along said transverse axis, wherein said cutting edge is positioned intermediate a first surface and a second surface of said step portion, and wherein said second surface is oriented away from said transverse axis and said first surface extends through said transverse axis. - View Dependent Claims (15)
-
Specification