Surgery – Truss – Pad
Patent
1986-11-26
1988-07-26
Ramm, William E.
Surgery
Truss
Pad
128740, A61B 504
Patent
active
047593776
ABSTRACT:
An improved method and apparatus for mechanical stimulation of nerves to evoke reflexive response, particularly sacral reflex latentency, comprises a hammer (30) having opposite distal and proximal ends. A normally open switch (36) with an extending switch arm (38 ) is mounted on the distal end of the handle (32) and positioned to close upon impact. The switch (36) is adapted for connection to an electromyograph. The switch (36) is preferably partially recessed within an enlargement (40) of the distal end of the handle (32). The switch (36) closes in response to tapping on the patient with the hammer (30) to effect manual stimulation and trigger recording of the reflexive response sensed via an electrode (26).
REFERENCES:
patent: 3344781 (1967-10-01), Allen
patent: 3515125 (1970-06-01), Ruskin
Aminoff, "Electromyography in Clinical Practice", Addison Wesley Publishing Co., 1978, Ch. 4.
Frollo et al., Medical and Biological Engineering and Computing, vol. 19, No. 6, Nov. 1981, Microprocessor-based instrument for Achilles tendon reflex measurements".
Yamada et al., "An Automated Measuring System for EMG Silent Period", IEEE Transactions in Biomedical Engineering, vol. BME 27, No. 7, Jul. 1980.
Philips Timothy G.
Ramm William E.
Regents of the University of Minnesota
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