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Mutiple tool laparoscopic surgical instrument
| Details |
Inventors: Pagedas, Anthony; Engle, Fred L.;
Assignee: Pagedas; Anthony (Greendale, WI)
Primary Examiner: Shay; David M.
Assistant Examiner:
Attorney, Agent or Firm: Ormiston Korfanta Dunbar & Holland
A multiple tool laparoscopic surgical instrument that includes a hand piece, an outer conduit connected to the hand piece, four inner conduits within the outer conduit, an interior channel within the outer conduit, a hypodermic needle housed at least partially within a first one of the inner conduits, an electrocautery cutting tool housed at least partially within a second one of the inner conduit, and a needle electrode housed at least partially within a third one of the inner conduits. In operation, the interior channel of the outer conduit, which is connected to an external source of irrigating fluid and a suction device, is used to provide gentle irrigation as well as suction. A fourth one of the inner conduits, which preferably has a cross sectional area smaller than that of the interior channel of the outer conduit, is also connected to an external source of irrigating fluid to provide more vigorous irrigation. The hypodermic needle, electrocautery cutting tool and the needle electrode are individually and selectively extended and retracted to perform desired surgical tasks with each such tool. |
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DETAILED DESCRIPTION It is one object of the present invention to provide a laparoscopic surgical instrument that includes multiple tools and functions in a configuration that is easy to manipulate and control.
Another object of the invention is to provide a laparoscopic surgical instrument that allows the contemporaneous washing of an area and removal of fluid, through a combination of fluid irrigation and suction.
A further object is to provide a laparoscopic surgical instrument that includes a means for both gentle and vigorous irrigation.
It is also an object of the invention to provide a laparoscopic instrument that allows selective extension and retraction of multiple tools housed within the instrument.
It is another object to provide a laparoscopic instrument that includes multiple surgical tools in one housing including an electrocautery cutting tool, a hypodermic needle, and a needle electrode.
These and other objects and advantages are achieved by a multiple tool laparoscopic surgical instrument that includes a hand piece, an outer conduit connected to the hand piece, four inner conduits within the outer conduit, an interior channel within the outer conduit, a hypodermic needle housed at least partially within a first one of the inner conduits, an electrocautery cutting tool housed at least partially within a second one of the inner conduits, and a needle electrode housed at least partially within a third one of the inner conduits.
In operation, the interior channel of the outer conduit, which is connected to an external source of irrigating fluid and a suction device, is used to provide gentle irrigation as well as suction.
A fourth one of the inner conduits, which preferably has a cross sectional area smaller than that of the interior channel of the outer conduit, is also connected to an external source of irrigating fluid to provide more vigorous irrigation and water dissection.
The hypodermic needle, electrocautery cutting tool and the needle electrode are individually and selectively extended and retracted to perform desired surgical tasks
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Liquid Purification 
