Surgery – Instruments – Cutting – puncturing or piercing
Patent
1992-11-12
1995-01-31
Lewis, Ralph A.
Surgery
Instruments
Cutting, puncturing or piercing
606167, 128 4, 604264, A61B 104, A61B 1734
Patent
active
053855728
ABSTRACT:
A trocar has an elongated shaft, and a cutting element is attached to a distal end of the shaft. The cutting element can be a transparent puncturing head formed integrally with the shaft, and a distal portion of the puncturing head is configured as a regular triangular pyramid having three sharpened cutting edges. Alternatively, the cutting element can be three or four metal cutting blades which are attached to the distal end of the shaft. In either case, a pathway for light communication is established from the cutting element through the shaft, a portion of which is transparent. The shaft has a cavity, and a rigid endoscope is positioned in the cavity 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.
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Brosch, Jr. Ben G.
Flower Robert J.
Lancaster Arthur
Nobles Anthony A.
Beowulf Holdings
Dawson Glenn K.
Lewis Ralph A.
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