Ultrasonic transducer devices and methods of manufacture
First Claim
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1. A single use transducer for ultrasonic surgical and dental applications comprising:
- a) a rear mass;
b) a piezoelectric material coupled to the rear mass, comprising less than 2% lead by weight;
c) a horn coupled to the piezo material; and
d) an end-effector coupled to the horn.
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Abstract
The present invention provides for single use ultrasonic transducers for use in surgical and dental applications. Specifically, the invention provides transducers comprising one or more of the following features, an active piezo ceramic material that contains less than 2% lead; piezo materials with a low Curie temperature, a high compressive bias force applied to the piezo ceramic elements, a bias bolt sub-assembly that includes a component assembled with a low-temperature glass-transition point filled epoxy material, and/or a permanently attached end effector with a self-locking taper.
362 Citations
20 Claims
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1. A single use transducer for ultrasonic surgical and dental applications comprising:
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a) a rear mass;
b) a piezoelectric material coupled to the rear mass, comprising less than 2% lead by weight;
c) a horn coupled to the piezo material; and
d) an end-effector coupled to the horn. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A single use transducer for ultrasonic surgical and dental applications comprising
a) a rear mass; -
b) a piezoelectric material having a high compressive bias stress level coupled to the rear mass;
c) a horn coupled to the piezo material; and
d) an end effector coupled to the horn; and
- View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A single use transducer for ultrasonic surgical and dental applications comprising
a) a rear mass; -
b) a piezoelectric material having a high compressive bias stress level between 50 MPa to 80 MPa coupled to the rear mass;
wherein the piezoelectric material is lead free and has a Curie temperature between 115°
C. and 140°
C;
c) a horn coupled to the piezo material;
d) an end effector permanently coupled to the horn; and
f) a low-temperature glass transition point epoxy material, wherein said epoxy material encapsulates a Belleville washer, within a bias bolt sub-assembly in the transducer; and
anchors the sub-assembly in the housing and thereby maintains a compressive force. - View Dependent Claims (20)
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Specification