Method of making biocompatible electrodes

Details Method of making biocompatible electrodes Method of making biocompatible electrodes

1990-01-29

1992-06-02

Nguyen, Nam

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419211, 2041923, C23C 1434

Patent

active

051184001

ABSTRACT:
A process of improving the sensing function of biocompatible electrodes and the product so made are disclosed. The process is designed to alter the surfaces of the electrodes at their tips to provide increased surface area and therefore decreased contact resistance at the electrode-tissue interface for increased sensitivity and essentially includes rendering the tips atomically clean by exposing them to bombardment by ions of an inert gas, depositing an adhesion layer on the cleaned tips, forming a hillocked layer on the adhesion layer by increasing the temperature of the tips, and applying a biocompatible coating on the hillocked layer. The resultant biocompatible electrode is characterized by improved sensitivity, minimum voltage requirement for organ stimulation and a longer battery life for the device in which it is employed.

REFERENCES:
patent: 4342632 (1982-08-01), Heim et al.
patent: 4440108 (1984-04-01), Little et al.
patent: 4440178 (1984-04-01), Bussard et al.
patent: 4443488 (1984-04-01), Little et al.
patent: 4526673 (1985-04-01), Little et al.
patent: 4542752 (1985-09-01), DeHaan et al.
patent: 4612100 (1986-09-01), Edeling et al.
patent: 4693760 (1987-09-01), Sioshansi
patent: 4720401 (1988-01-01), Ho et al.
patent: 4743308 (1988-05-01), Sioshansi et al.
patent: 4855026 (1989-08-01), Sioshansi
patent: 4934381 (1990-06-01), MacGregor
O. W. Holland et al., "Hillock Reduction in Ion-Implanted Metal", J. Electroch. Soc: Solid-State Science and Technology, Aug. 1987; pp. 2017-2019.
A. J. Weigand et al., "Ion-Beam-Sputter Modification of the Surface Morphology of Biological Implants", Journal Vac. Sci. Technol., vol. 14, Jan./Feb. 1977 pp. 326-330.
A. J. Weigand, "Mechanical Properties of Ion-Beam-Textured Surgical Implant Alloys", J. Vac. Sci. Technol. 15 (2) Mar./Apr. 1978 pp. 718-224.
Harold R. Kaufman et al., "Ion Beam Texturing of Surfaces", J. Vac. Sci. Technol., 16 (2) Mar./Apr. 1979 pp. 175-178.
Bruce A. Banks, "Ion Bombardment Modification of Surfaces in Biomedical Applications", Ion Bombardment Modification . . . Elsevier 1984 Chapter 10.
Lewis Research Center, "Process Produces Low-Secondary-Electron-Emission Surfaces" NASA Tech Briefs, Mar./Apr. 1986 pp. 88 & 90.
A. J. Weigand, "The Use of an Ion-Beam Source to Alter the Surface . . . " NASA Technical Memorandum 78851 1978 pp. 1-17.
A. J. Weigand et al., "Mechanical and Chemical Effects of Ion-Texturing Biomedical Polymers" NASA Technical Memorandum 79245, 1979 pp. 1-13.

Affiliated with

Also associated with

Rating

Method of making biocompatible electrodes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making biocompatible electrodes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making biocompatible electrodes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2226519