Optical trocar
First Claim
Patent Images
1. A trocar, comprising:
- a cannula;
an obturator configured for insertion into said cannula, said obturator having a proximal end, and a distal end;
a member at said distal end of said obturator, said member having a recess;
a cutting blade for penetrating body tissue positioned at said distal end of said obturator, said cutting blade being movable between a non-deployed position, in which said blade is disposed in said recess, and a deployed position, in which said blade is extended from said recess; and
an actuator operatively connected to said cutting blade, said actuator selectively movable to move the cutting blade between the non-deployed position and the deployed position.
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Abstract
The present invention relates to an optical obturator which includes a sleeve having a longitudinal bore between a proximal end and a distal end. The longitudinal bore of the sleeve is configured to receive at least a portion of an endoscope or like image transferring system. An image passing member, such as an optical window is positioned at the distal end of the sleeve and is provided to permit optical images to pass into the longitudinal bore of the sleeve and to permit illumination light to pass to the surgical site. An automatically retracting blade is positioned distal to the image passing member to facilitate penetration of body tissue.
83 Citations
12 Claims
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1. A trocar, comprising:
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a cannula;
an obturator configured for insertion into said cannula, said obturator having a proximal end, and a distal end;
a member at said distal end of said obturator, said member having a recess;
a cutting blade for penetrating body tissue positioned at said distal end of said obturator, said cutting blade being movable between a non-deployed position, in which said blade is disposed in said recess, and a deployed position, in which said blade is extended from said recess; and
an actuator operatively connected to said cutting blade, said actuator selectively movable to move the cutting blade between the non-deployed position and the deployed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification