Micromachined electrical cauterizer

Details Micromachined electrical cauterizer Micromachined electrical cauterizer

1997-05-12

1999-08-31

Cohen, Lee

Surgery

Instruments

Electrical application

606 50, 606 51, 600547, 600564, 600565, A61B 1739

Patent

active

059447176

ABSTRACT:
A micromachined electrical cauterizer. Microstructures are combined with microelectrodes for highly localized electro cauterization. Using boron etch stops and surface micromachining, microneedles with very smooth surfaces are made. Micromachining also allows for precision placement of electrodes by photolithography with micron sized gaps to allow for concentrated electric fields. A microcauterizer is fabricated by bulk etching silicon to form knife edges, then parallelly placed microelectrodes with gaps as small as 5 .mu.m are patterned and aligned adjacent the knife edges to provide homeostasis while cutting tissue. While most of the microelectrode lines are electrically insulated from the atmosphere by depositing and patterning silicon dioxide on the electric feedthrough portions, a window is opened in the silicon dioxide to expose the parallel microelectrode portion. This helps reduce power loss and assist in focusing the power locally for more efficient and safer procedures.

REFERENCES:
patent: 4936281 (1990-06-01), Stasz
patent: 4953559 (1990-09-01), Salerno
patent: 5078717 (1992-01-01), Parins et al.
patent: 5085659 (1992-02-01), Rydell
patent: 5098431 (1992-03-01), Rydell
patent: 5217458 (1993-06-01), Parins
patent: 5454809 (1995-10-01), Janssen
patent: 5603711 (1997-02-01), Parins et al.
patent: 5626578 (1997-05-01), Tihon

Affiliated with

Also associated with

Rating

Micromachined electrical cauterizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Micromachined electrical cauterizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Micromachined electrical cauterizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2425107