Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1999-07-13
2001-09-04
Mendez, Manuel (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
Reexamination Certificate
active
06283948
ABSTRACT:
TECHNICAL FIELD
The field of art to which this invention relates is surgical instrumentation for minimally invasive procedures, in particular, trocar obturators.
BACKGROUND OF THE INVENTION
Obturators are devices that are well known in the minimally invasive surgical arts. Typically an obturator is used to surgically make a small entryway or passageway into a body cavity or a joint. Quite often obturators are mounted coaxially into cannulas. The combined obturator and cannula combination is inserted into the body cavity or joint, and then the obturator is removed; thereby providing a passageway into the body cavity or joint for use in a minimally invasive surgical procedure. Quite often, several cannulas are utilized since a minimally invasive procedure requires at least one cannula or entryway for a camera or other remote viewing device.
Although the obturators and obturator-cannula combinations known in the art perform their function in a satisfactory manner, there is need in this art for new obturators which can be used without a cannula to provide an entryway into a body cavity or joint.
DISCLOSURE OF THE INVENTION
Accordingly, it is an object of the present invention to provide an obturator that can be used to introduce a surgical instrument into a body cavity or joint.
Therefore an obturator is disclosed. The obturator has an elongated member having a distal end, a proximal end, a longitudinal axis and an outer surface. A groove extends into the member through the outer surface. The groove is substantially parallel to the longitudinal axis of the elongated member. The groove has a proximal end, a distal end, a bottom and an open top. The distal end of the groove is ramped up from the bottom of the groove to the outer surface of the elongated member. A piercing point extends from the distal end of the elongated member. An optional handle extends from the proximal end of the member.
Yet another aspect of the present invention is a method of using the above-described obturator of the present invention in a surgical procedure.
These and other aspects of the present invention will become more apparent by the following description and accompanying drawings.
REFERENCES:
patent: 2541542 (1951-02-01), Perez et al.
patent: 3039468 (1962-07-01), Price
patent: 5279553 (1994-01-01), Winkler et al.
patent: 5360416 (1994-11-01), Ausherman et al.
patent: 5651790 (1997-07-01), Resnick et al.
patent: 5667514 (1997-09-01), Heller
patent: 5779624 (1998-07-01), Chang
patent: 5853391 (1998-12-01), Bell
patent: 5908431 (1999-06-01), Battenfield
Kammerer Gene W.
McKernan Daniel J.
Seritella Keith
Sullivan Joan M.
Ethicon Inc.
Mendez Manuel
Skula Emil Richard
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