Hook shaped ultrasonic cutting blade
First Claim
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1. A surgical method comprising:
- providing a cutting blade having a blade body and a shank, said shank being fixed at one end to said blade body, said blade body having a hook portion at a distal end and opposite said shank, said hook portion including a first cutting edge facing in a distal direction away from said shank and a second cutting edge facing in a proximal direction toward said shank;
operatively connecting said shank at an end opposite said blade body to a source of ultrasonic vibrations;
thereafter moving said blade into a patient;
ultrasonically vibrating said blade during the moving of said blade into the patient, so that said first cutting edge cuts into tissues of the patient;
subsequently pulling said blade in a proximal direction out of the patient so that said second cutting edge engages bony tissue of the patient; and
ultrasonically vibrating said blade during the pulling of said blade to thereby cut through said bony tissue,wherein said shank has a longitudinal axis and said blade body includes an elongate portion connecting said shank to said hook portion, said elongate portion including a third cutting edge facing said axis, further comprising;
shifting said blade body laterally after the moving of said blade into the patient and prior to the pulling of said blade in a proximal direction out of the patient, ultrasonically vibrating said blade during the shifting of said blade to thereby enable said third cutting edge to cut through tissues of the patient.
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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.
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Citations
3 Claims
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1. A surgical method comprising:
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providing a cutting blade having a blade body and a shank, said shank being fixed at one end to said blade body, said blade body having a hook portion at a distal end and opposite said shank, said hook portion including a first cutting edge facing in a distal direction away from said shank and a second cutting edge facing in a proximal direction toward said shank; operatively connecting said shank at an end opposite said blade body to a source of ultrasonic vibrations; thereafter moving said blade into a patient; ultrasonically vibrating said blade during the moving of said blade into the patient, so that said first cutting edge cuts into tissues of the patient; subsequently pulling said blade in a proximal direction out of the patient so that said second cutting edge engages bony tissue of the patient; and ultrasonically vibrating said blade during the pulling of said blade to thereby cut through said bony tissue, wherein said shank has a longitudinal axis and said blade body includes an elongate portion connecting said shank to said hook portion, said elongate portion including a third cutting edge facing said axis, further comprising;
shifting said blade body laterally after the moving of said blade into the patient and prior to the pulling of said blade in a proximal direction out of the patient, ultrasonically vibrating said blade during the shifting of said blade to thereby enable said third cutting edge to cut through tissues of the patient. - View Dependent Claims (2, 3)
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Specification