Ultrasonic surgical instrument with piezoelectric central lumen transducer
First Claim
1. A surgical instrument for coagulating and dissecting tissue, the surgical instrument comprising:
- a transducer assembly comprising;
a housing;
an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein at least one of the plurality of electrodes is located between at least one pair of the plurality of piezoelectric elements;
an end mass positioned adjacent a first end of the ultrasonic transducer, wherein the end mass is configured to engage with the housing; and
wherein the end mass is configured to compress the ultrasonic transducer against an interior surface of the housing when the end mass is engaged with the housing.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument includes a transducer assembly with a housing having a conduit section and a base portion. A fluid passageway is defined through the conduit and base portion, an ultrasonic transducer including a plurality of piezoelectric elements and a plurality of electrodes are arranged in a stack configuration, where an electrode is located between each pair of piezoelectric elements. A first borehole is defined through the ultrasonic transducer and an end mass having a second borehole defined therethrough. A surface of the end mass is positioned adjacent a first end of the ultrasonic transducer, the end mass is configured to engage with the housing, and the conduit section of the housing is configured to pass through the second borehole of the end mass. The end mass is configured to compress the ultrasonic transducer against a surface of the housing when the end mass is engaged with the housing.
2126 Citations
12 Claims
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1. A surgical instrument for coagulating and dissecting tissue, the surgical instrument comprising:
a transducer assembly comprising; a housing; an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein at least one of the plurality of electrodes is located between at least one pair of the plurality of piezoelectric elements; an end mass positioned adjacent a first end of the ultrasonic transducer, wherein the end mass is configured to engage with the housing; and wherein the end mass is configured to compress the ultrasonic transducer against an interior surface of the housing when the end mass is engaged with the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification