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US 5,797,944 AGranted
Visualization trocar
AssigneeEthicon Endo-Surgery, Inc.
InventorsAnthony A. Nobles, Arthur Lancaster, Ben G. Brosch, Jr.
Life of this patent
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Abstract
A trocar having an elongated shaft, and a puncturing head attached to a distal end of the shaft. The puncturing head can have three blades with sharpened cutting edges embedded in the puncturing head. An endoscope can be positioned in a bore of the shaft to collect light from the distal end of the shaft. A video monitor is connected to the endoscope for displaying an image of the path of advancement of the trocar.
Claims5
A trocar for endoscopic surgery, comprising:
- a shaft having a distal end and a proximal segment having a cavity formed therein, the shaft having a longitudinal axis;
- a transparent puncturing head formed on the distal end of the shaft;
- and
- a blade embedded in the puncturing head, the blade having a flat blade surface defining a blade plane, and the blade is positioned such that the blade plane is parallel to the longitudinal axis;
- wherein a video display system may be operationally connected within the cavity formed in the proximal segment of the shaft for displaying the image of an object located beyond the puncturing head.
2 more elements
Dependencies are inferred from the claim text.