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.
52 Citations
27 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)
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13. A surgical instrument for coagulating and dissecting tissue, the surgical instrument comprising:
a transducer assembly comprising; a housing comprising a conduit section and a base portion, wherein the conduit section and the base portion define a fluid passageway; 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, and wherein a first borehole is defined through the ultrasonic transducer; and an end mass comprising a second borehole defined therethrough, wherein a surface of the end mass is positioned adjacent a first end of the ultrasonic transducer, wherein the end mass is configured to engage with the housing; and wherein; the conduit section of the housing is configured to pass through the first borehole of the ultrasonic transducer and the second borehole of the end mass; and 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 (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A transducer assembly comprising:
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a housing comprising a conduit section and a base portion, wherein a fluid passageway is defined through the conduit section and the base portion; a conductive element at least partially surrounding the conduit section of the housing; an insulator positioned between the conductive element and the conduit section, wherein the insulator is configured to electrically isolate the conductive element from the conduit section; an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein the ultrasonic transducer comprises a first end and a second end; a first borehole defined through the ultrasonic transducer; an end mass comprising a second borehole defined therethrough, wherein the end mass is positioned adjacent to a first end of the ultrasonic transducer and the end mass is configured to engage with the housing; and wherein; the conduit section of the housing is configured to pass through the first borehole of the ultrasonic transducer and 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, and a first piezoelectric element of the plurality of piezoelectric elements and a second piezoelectric element of the plurality of piezoelectric elements are electrically connected in parallel. - View Dependent Claims (25, 26, 27)
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Specification