Transcutaneous electric nerve stimulation system
AssigneePierenkemper GmbH
InventorBernd Kreutner
Life of this patent
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Abstract
An apparatus for transcutaneous electric nerve stimulation (TNS) with a power supply, a frequency generator and an electric circuit for the generation of different output frequencies of variable intensity at the output electrodes which may be connected to the apparatus and to an output short circuit to improve the pulse form emitted. The output short circuit network comprises a transistor T1, which upon actuation by a triggering pulse activates with its collector the base of a subsequent transistor T2, in a manner such that the trigger pulse is inverted in the transistor T1, whereby the transistor T2 switches to the negative pulse flank and the outlet is short-circuited by the discharge resistor R(ent) connected to the emitter side.
Claims15
An apparatus for transcutaneous electric nerve stimulation (TNS) comprising:
- a frequency generator;
- an electric circuit means for generation of different output frequencies of variable intensity at output electrodes;
- and
- an output short circuit network to improve an emitted pulse form, said output short circuit network comprising at least a first transistor and a second transistor, upon actuation of said first transistor by a triggering pulse, a collector of said first transistor activates a base of said second transistor, said output short circuit network being configured such that the triggering pulse is inverted in the first transistor, and the second transistor switches the pulse form to a negative pulse flank and an output of the second transistor is short-circuited by a discharge resistor connected to the second transistor emitter.
A transcutaneous electric nerve stimulation device comprising:
- means for generating a pulse form connected to a power supply and a frequency generator;
- a pulse shaping unit, connected to said means for generating a pulse form including a first transistor inverting stage connected to a triggering signal, and a second negative pulse flank switching transistor stage configured to short an output of said means for generating with a discharge resistor, wherein a collector of said first transistor stage is connected to a base of said second transistor stage.
A method for generating a transcutaneous electric nerve stimulation pulse comprising the steps of:
- generating a triggering pulse;
- generating an output signal based in part on said triggering pulse;
- and
- modifying said output signal in response to said triggering pulse, wherein said step of modifying comprises at least the steps of inverting said triggering pulse, and shorting said output signal.
Dependencies are inferred from the claim text.