Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-06-07
1998-07-07
Shay, David M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 59, 607 60, 607 61, 607 62, A61F 202
Patent
active
057761710
ABSTRACT:
An input command controller (A) provides logic function selection signals and proportional signals. The signals are generated by movement of a ball member (12) and socket member (14) relative to two orthogonal axes. When the joystick is implanted, a transmitter (50) transmits the signals to a patient carried unit (B). The patient carried unit includes an amplitude modulation algorithm such as a look-up table (124), a pulse width modulation algorithm (132), and an interpulse interval modulation algorithm (128). The algorithms derive corresponding stimulus pulse train parameters from the proportional signal which parameters are transmitted to an implanted unit (D). The implanted unit has a power supply (302) that is powered by the carrier frequency of the transmitted signal and stimulation pulse train parameter decoders (314, 316, 318). An output unit (320) assembles pulse trains with the decoded parameters for application to implanted electrodes (E). A laboratory system (C) is periodically connected with the patient carried unit to measure for changes in patient performance and response and reprogram the algorithm accordingly. The laboratory system also performs initial examination, set up, and other functions.
REFERENCES:
patent: 4639667 (1987-01-01), Andresen
"An Implantable RF-Powered Dual Channel Stimulator" by Roon et al: Biotelemetry Patient Manitg; vol. 8, No. 3, 180-188 (1991).
"A Proportioned Joystick Controller for High Level Quadriplegics" by Thorpe et al; RESNA 8.sup.th Annual Conf. Memphis Tenn 1985.
Buckett et al; "Shoulder Position Control, An Alternative Control Technique for Motion Impaired Individuals"; Proc of the International Conf. on Rehab. Eng. Toronto 1980 pp. 244-247.
Buckett James Robert
Letechipia Jorge Ernesto
Peckham Paul Hunter
Smith Brian
Thrope Geoffrey Bart
Case Western Reserve University
Shay David M.
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