Patent · US Expired

Noise attenuating smokeless surgical device

US4683884A · kind A · utility

69Cited by

8References

4Claims

0Family size

Assignee

MD Engineering · US

Inventors

Gregory Hatfield · Foster City, US
Robert E. Lash · Redwood City, US

Key dates

Filing date	Apr 11, 1986
Grant date	Aug 4, 1987
Priority date	—
Expiry date	Apr 11, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S128/91
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A smokeless, low noise electrosurgical device includes a tubular housing having a passage extending axially therethrough, with one end of the passage connected to a source of negative gauge pressure. The other, inlet end of the housing is provided with an electrosurgical cutting device or cauterizing probe extending therefrom. The inlet to the passage comprises a wide opening having side walls which converge to a relatively narrow port in flow communication with the passage in the housing. The port is significantly narrower than the passage, resulting in significantly reduced noise generated by the fluid flow into the inlet and through the passage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.