Optical trocar
AssigneeUnited States Surgical Corporation
InventorsJude S. Sauer, Michael G. Oravecz, Roger J. Greenwald, Alexander I. Kobilansky
Life of this patent
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Abstract
The present invention relates to an optical obturator which includes a sleeve having a longitudinal bore between a proximal 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.
Claims20
A trocar which comprises:
- a cannula;
- an obturator configured for insertion into said cannula, said obturator having a proximal end, a distal end and a longitudinal bore;
- a member positioned at said distal end of said obturator for allowing optical images to pass into said longitudinal bore;
- a cutting blade for penetrating body tissue positioned at said distal end of said obturator, said cutting blade being movable between non-deployed and deployed positions;
- and
- an actuator operatively connected to said cutting blade, said actuator selectively movable to move the cutting blade between the non-deployed and deployed positions.
A trocar which comprises:
- a cannula;
- an obturator configured for insertion into said cannula, said obturator having a proximal end, a distal end and a longitudinal bore;
- a member positioned at said distal end of said obturator for allowing optical images to pass into said longitudinal bore;
- means for penetrating body tissue positioned at said distal end of said obturator, said penetrating means being movable between non-deployed and deployed positions and comprising a blade operatively connected to an actuating member such that actuation of said actuating member moves said blade to said deployed position;
- and
- means for automatically moving said blade to said non-deployed position.
A trocar which comprises:
- a cannula;
- an obturator configured for insertion into said cannula, said obturator having a proximal end, a distal end and a longitudinal bore;
- a member positioned at said distal end of said obturator for allowing optical images to pass into said longitudinal bore;
- means for penetrating body tissue positioned at said distal end of said obturator, said penetrating means comprising a blade movable between non-deployed and deployed positions;
- an actuating member for moving said blade, wherein initial movement of said actuating member in a first direction moves said blade to said deployed position and further movement of said actuating member in said first direction moves said blade to said non-deployed position;
- a blade drive member slidably positioned within said obturator and operatively connected to said blade;
- wherein said actuating member comprises a trigger member and a pivotable lever operatively connected thereto, said pivotable lever configured to slide said blade drive member to deploy said blade and to allow release of said blade drive member to retract said blade.
Apparatus for observation of body tissue during penetration which comprises:
- a cannula assembly having a cannula housing and a cannula sleeve extending from said cannula housing, said cannula sleeve having a longitudinal bore extending from a proximal end to a distal end;
- an obturator assembly having an obturator housing and an obturator sleeve, said obturator sleeve being configured for coaxial alignment with said cannula sleeve, a distal end of said obturator sleeve having an image passing member positioned thereon, and having means for penetrating body tissue positioned distal to said image passing member, said penetrating means comprising a cutting blade;
- an actuator operatively connected to the cutting blade and selectively movable to move the blade between a non-deployed and deployed position;
- and
- said obturator sleeve having means to receive an optical imaging member for transmitting images to a proximal end of said obturator housing for viewing.
Dependencies are inferred from the claim text.