Bipolar endoscopic instrument
First Claim
Patent Images
1. A bipolar endoscopic instrument comprisinga tubular stem (11) having a proximal end and a distal end;
- a shaft (14) supported at a distal end of said stem, said shaft (14) having two mutually insulated electrically conductive zones (17,
18);
two arms pivotably supported on said shaft;
means for causing pivoting motion of said arms, said means including a push/pull element axially displaceable in said stem and coupled to said arms to cause said arms to pivot in opposite directions; and
electrical power leads each having one end connected to an output terminal of a high-frequency voltage source and the other ends connected respectively to said electrically conductive zones of said shaft and through said zones to said arms.
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Accused Products
Abstract
A bipolar endoscopic instrument has a tubular stem fitted at its distal end with two arms pivotally supported on a shaft. The arms are pivoted by actuating an axially displaceable push/pull element mounted in the stem. The arms are connected through mutually electrically insulated leads to the terminals of a high-frequency power source, the shaft having two mutually insulated, electrically conductive segments each electrically connected to one of the electrical leads and the arm associated with this lead.
56 Citations
14 Claims
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1. A bipolar endoscopic instrument comprising
a tubular stem (11) having a proximal end and a distal end; -
a shaft (14) supported at a distal end of said stem, said shaft (14) having two mutually insulated electrically conductive zones (17,
18);two arms pivotably supported on said shaft; means for causing pivoting motion of said arms, said means including a push/pull element axially displaceable in said stem and coupled to said arms to cause said arms to pivot in opposite directions; and electrical power leads each having one end connected to an output terminal of a high-frequency voltage source and the other ends connected respectively to said electrically conductive zones of said shaft and through said zones to said arms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification