Electrosurgical device to generate a plasma stream

Details Electrosurgical device to generate a plasma stream Electrosurgical device to generate a plasma stream

2008-01-08

2008-01-08

Peffley, Michael (Department: 3739)

Surgery

Instruments

Electrical application

C606S049000

Reexamination Certificate

active

07316682

ABSTRACT:
An electrosurgical device to generate a plasma stream for performing electrosurgery on a surgical site on a patient comprising an electrosurgical generator coupled to a electrical power source to supply power to the electrosurgical device and a plasma generator including an electrode operatively coupled to the electrosurgical generator to receive electrical energy therefrom and concentrically disposed within an inner noble gas conduit to form a plasma channel coupled to a noble gas source to feed noble gas to the inner noble gas conduct, an intermediate electronegative gas conduit disposed in surrounding coaxial relation relative to the noble gas conduit to cooperatively form an electronegative gas channel therebetween coupled to a gas source to feed electronegative gas to the electronegative gas channel and an outer aspiration conduit disposed in surrounding coaxial relation relative to the intermediate electronegative gas conduit to cooperatively form an aspiration channel therebetween coupled to a negative pressure source such that the electrode heats the noble gas to at least partially ionize the noble gas to generate the plasma stream to be directed to the surgical site to perform the surgical procedure while the electronegative gas maintains or sustains the plasma stream and the negative pressure source removes fluid and solid debris from the surgical site.

REFERENCES:
patent: 3601126 (1971-08-01), Estes
patent: 4060088 (1977-11-01), Morrison et al.
patent: 5776092 (1998-07-01), Farin et al.
patent: 6213999 (2001-04-01), Platt et al.
patent: 6852112 (2005-02-01), Platt
patent: 2005/0234442 (2005-10-01), Spears

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