Bipolar surgical grasping instrument
First Claim
1. A bipolar surgical grasping instrument, comprising:
- a tubular shank;
first and second arms with associated toggle lever elements;
said first and second arms mounted pivotably at an end of said tubular shank;
said first and second arms adapted to be pivoted via said toggle lever elements by a push-and-pull rod that is displaceable in said tubular shank;
said toggle lever elements being electrically conductively connected to one another;
an insulating part for electrically insulating said second arm from said toggle lever elements;
said insulating part transmitting a pivoting force from at least one of said toggle lever elements to said second arm;
a pivot bearing extending through said second arm and at least one of said toggle lever elements;
said first and second arms pivotable about said pivot bearing;
wherein;
said second arm is electrically conductively connected with said tubular shank via said pivot bearing; and
said first arm is electrically insulated from said pivot bearing and said second arm.
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Accused Products
Abstract
A bipolar surgical grasping instrument with two grasping arms that are electrically insulated from one another. The two arms are pivotally mounted at the end of a tubular shank, and are coaxially pivotable in opposite directions by toggle lever elements that are activated by a push-and-pull rod displaceable in the tubular shank. The push-and-pull rod and the toggle lever elements of the two arms consist of electrically conducting material and are electrically conductively connected to one another. The first arm is electrically conductively connected to it associated toggle lever elements. The second arm is connected to its associated toggle lever elements via an insulating part, and the second arm is electrically conductively connected via a pivot bearing to the tubular shank. The first arm is rotatably mounted on the tubular shank and electrically insulated from the second arm and from the tubular shank.
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Citations
20 Claims
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1. A bipolar surgical grasping instrument, comprising:
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a tubular shank; first and second arms with associated toggle lever elements; said first and second arms mounted pivotably at an end of said tubular shank; said first and second arms adapted to be pivoted via said toggle lever elements by a push-and-pull rod that is displaceable in said tubular shank; said toggle lever elements being electrically conductively connected to one another; an insulating part for electrically insulating said second arm from said toggle lever elements; said insulating part transmitting a pivoting force from at least one of said toggle lever elements to said second arm; a pivot bearing extending through said second arm and at least one of said toggle lever elements; said first and second arms pivotable about said pivot bearing;
wherein;said second arm is electrically conductively connected with said tubular shank via said pivot bearing; and said first arm is electrically insulated from said pivot bearing and said second arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A bipolar surgical grasping instrument, comprising:
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a tubular shank; first and second arms mounted pivotably at an end of said tubular shank; said first arm extending from an operating end thereof to a first toggle lever element associated therewith; said first toggle lever element associated with said first arm pivotably mounted about a first pivot point to a second toggle lever element associated with said first arm; said second toggle lever element associated with said first arm adapted to be pivotably mounted about a second pivot point to a push-and-pull rod that is displaceable in said tubular shank; said second arm extending from an operating end thereof to a first toggle lever element associated therewith via an insulating part for electrically insulating said second arm from said first toggle lever element associated therewith, and from said first toggle lever element associated with said first arm; said insulating part transmitting a pivoting force from said first toggle lever element associated with said second arm to said second arm; said first toggle lever element associated with said second arm pivotably mounted about a third pivot point to a second toggle lever element associated with said second arm; said second toggle lever element associated with said second arm adapted to be pivotably mounted about said second pivot point; and a bearing shaft extending though said second arm and said first toggle lever element associated with said first arm to allow said second arm to pivot with respect to said first arm;
wherein;said second arm is electrically conductively connected to said tubular shank via said bearing shaft; and said first arm is electrically insulated from said second arm, said bearing shaft, and said tubular shank. - View Dependent Claims (17, 18, 19, 20)
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Specification