Hook shaped ultrasonic cutting blade
First Claim
1. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a longitudinal axis, the shank having a shank width in a direction substantially perpendicular to the axis, the blade body having a hook portion and an elongate portion connecting said hook portion to said shank, said elongate portion having a blade width in a direction substantially perpendicular to the axis, the blade width being substantially less than the shank width, said elongate portion of the blade body having a thickness substantially less than the blade width, the blade body having said hook portion at a distal end and opposite the shank, the blade body and the shank defining a cutout or recess between the shank at a proximal end and the hook portion at the distal end of the blade body, the shank being formed with a longitudinal bore or channel communicating directly with the cutout or recess at a proximal end thereof, the blade body including the hook portion and an elongate portion located entirely to one side of the axis, the elongate portion including a first edge and a second edge substantially parallel to one another and to the axis, at least one of the first edge and the second edge including a sharp section.
8 Assignments
0 Petitions
Accused Products
Abstract
An ultrasonic surgical blade has a blade body and a shank. The shank is fixed at one end to the blade body and is operatively connectable at an opposite end to a source of ultrasonic vibrations. The shank has a longitudinal axis. The blade body is eccentrically disposed relative to the axis.
227 Citations
19 Claims
- 1. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a longitudinal axis, the shank having a shank width in a direction substantially perpendicular to the axis, the blade body having a hook portion and an elongate portion connecting said hook portion to said shank, said elongate portion having a blade width in a direction substantially perpendicular to the axis, the blade width being substantially less than the shank width, said elongate portion of the blade body having a thickness substantially less than the blade width, the blade body having said hook portion at a distal end and opposite the shank, the blade body and the shank defining a cutout or recess between the shank at a proximal end and the hook portion at the distal end of the blade body, the shank being formed with a longitudinal bore or channel communicating directly with the cutout or recess at a proximal end thereof, the blade body including the hook portion and an elongate portion located entirely to one side of the axis, the elongate portion including a first edge and a second edge substantially parallel to one another and to the axis, at least one of the first edge and the second edge including a sharp section.
- 4. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a longitudinal axis, the shank having a shank width in a direction substantially perpendicular to the axis, the blade body having a hook portion and an elongate portion connecting said hook portion to said shank, said elongate portion having a blade width in a direction substantially perpendicular to the axis, the blade width being substantially less than the shank width, said elongate portion of the blade body having a thickness substantially less than the blade width, the blade body having said hook portion at a distal end and opposite the shank, the blade body and the shank defining a cutout or recess between the shank at a proximal end and the hook portion at the distal end of the blade body, the hook portion being provided with an arcuate cutting edge facing in a distal direction, away from the shank.
- 11. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a longitudinal axis, the shank having a shank width in a direction substantially perpendicular to the axis, the blade body having a blade width in a direction substantially perpendicular to the axis, the blade width being substantially less than the shank width, the blade body having a thickness substantially less than the blade width, the blade body having a hook portion at a distal end and opposite the shank, the blade body and the shank defining a cutout or recess between the shank at a proximal end and the hook portion at the distal end of the blade body, the hook portion being provided with a cutting edge facing in a proximal direction toward the shank, the cutting edge being provided with a cutout or notch facing in a proximal direction and toward the shank.
- 14. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a central longitudinal axis, the shank having a shank width in a direction substantially perpendicular to the axis, the blade body having a blade width in a direction substantially perpendicular to the axis, the blade width being substantially less than the shank width, the blade body having a thickness substantially less than the blade width, the blade body having a hook portion at a distal end and opposite the shank, the blade body and the shank defining a cutout or recess between the shank at a proximal end and the hook portion at the distal end of the blade body, the blade body including the hook portion and an elongate portion, the elongate portion being located entirely to one side of the axis, the elongate portion having a first straight edge extending parallel to and facing the longitudinal axis, the hook portion having a second straight edge on a side of the longitudinal axis opposite the elongate portion, the second straight edge extending parallel to and facing away from the longitudinal axis.
- 16. An ultrasonic surgical blade comprising a blade body and a shank, the shank being fixed at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, the shank having a longitudinal axis, the blade body consisting essentially of a proximal plate shaped portion, an elongate longitudinal portion, and a distal hook portion, the longitudinal portion connecting the proximal plate shaped portion and the hook portion, the longitudinal portion being disposed entirely to one side of the axis, the hook portion extending from a distal end of the longitudinal portion towards the axis, the blade body having a cutout or recess defined by the proximal plate shaped portion at a proximal side, the hook portion at a distal side and the longitudinal portion therebetween, the hook portion being formed with a sharp circularly arcuate cutting edge facing in a distal direction and away from the shank, the longitudinal portion of the blade body being provided with a sharp linear cutting edge facing laterally away from the axis, the linear cutting edge being smoothly continuous with the circularly arcuate cutting edge in a J-shaped formation having no teeth, serrations or voids.
Specification