Abstract An improved ultrasonically vibrated surgical cutting instrument for cutting soft tissues without stretching the same during the cutting hereof having an ultrasonic frequency generator, a transducer connected to said ultrasonic frequency generator for creating a vibratory motion and having a vibrator in communication with the transducer, and a double blade knife with one of the blades adapted to move in a longitudinal direction along the motion of the vibrator and the other blade fixed to prevent deflection of the cutting blade during the cutting operation and retaining the tissue against the cutting edge such that when the sharp edge of the knife blades touch soft tissues the knife blades will cut the soft tissues without stretching the membrane.
Inventors
👤 Donald Jackson Coleman
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-23 15:26
CPC Classifications
B; B26; B26B; B26B7/00; B26B7/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
An improved ultrasonically vibrated surgical cutting instrument having an ultrasonic frequency generator, a transducer in communication with said ultrasonic frequency generator for converting ultrasonic energy to vibratory energy and a vibrating anvil in communication with said transducer for providing vibrations wherein the improvement comprises a fixed knife blade, a moveable knife blade in communication with said fixed knife blade and said vibrating anvil and means for preventing said moveable knife blade from separating from said fixed knife blade during the cutting operation so that said fixed knife blade prevents said moveable knife blade from deflecting during the cutting operation.
Claim 2
Dependent Claim
99 words
An improved ultrasonically vibrated surgical cutting instrument having an ultrasonic frequency generator, a transducer in communication with said ultrasonic frequency generator for converting ultrasonic energy to vibratory energy and a vibrating anvil in communication with said transducer for providing vibrations wherein the improvement comprises a fixed knife blade, a moveable knife blade in communication with said fixed knife blade and said vibrating anvil and means for preventing said moveable knife blade from separating from said fixed knife blade during the cutting operation so that said fixed knife blade prevents said moveable knife blade from deflecting during the cutting operation.
Claim 3
Dependent Claim
57 words
The device in accordance with claim 1 wherein said preventive means comprises a keyway in said moveable knife blade, a projection on said fixed knife blade in communication with said keyway, and a projection on said moveable knife blade in communication with said fixed knife blade to bias said moveable knife blade against said fixed knife blade.
Claim 4
Dependent Claim
17 words
The device in accordance with claim 2 wherein said moveable knife blade has a serrated cutting edge.
Claim 5
Dependent Claim
17 words
The device in accordance with claim 3 wherein said fixed knife blade has a serrated cutting edge.