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US4846178A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric field therapeutic apparatus

Assignee: BIOSYS
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Filing: 1987-05-11
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Granted: 1989-07-11
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Expires: 2007-05-11
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Abstract

Abstract An electric field therapeutic apparatus comprising a D.C. source, an oscillator, a transformer, a rectificating circuit and output electrodes isolated from the environment for creating an electric field adjacent an injured part of a human or animal body to fulfil therapeutic purposes. The electric field is of a potential adjustable within a range of 100-5,000 V, and by adapting a pulse generator, and a switching circuit, this electric field can be formed by a pulse signal or pulse modulated alternating signal. The isolated electrodes can be combined with the conventional splint or bandage according to its different designs.

Inventors

  • 👤 Zhang Fuxue
  • 👤 Zhu Weitong
  • 👤 Yang Xiufeng

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 13:04
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/40

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 97 words
An electric field therapeutic apparatus comprising: a D.C. source; oscillator means energized by said D.C. source for generating an alternating signal of specific frequency; means for transforming the alternating signal provided by said oscillator means into a voltage signal in the range of 100-5,000 V; means for rectifying the voltage signal provided by said transforming means to provide a direct current signal; and at least two insulated output electrodes connected to the rectifying means so as to form a static electric field, utilizing the direct current signal, adjacent to an injured body part to fulfil therapeutic purposes.
Claim 2
Dependent Claim 97 words
An electric field therapeutic apparatus comprising: a D.C. source; oscillator means energized by said D.C. source for generating an alternating signal of specific frequency; means for transforming the alternating signal provided by said oscillator means into a voltage signal in the range of 100-5,000 V; means for rectifying the voltage signal provided by said transforming means to provide a direct current signal; and at least two insulated output electrodes connected to the rectifying means so as to form a static electric field, utilizing the direct current signal, adjacent to an injured body part to fulfil therapeutic purposes.
Claim 3
Dependent Claim 27 words
An apparatus according to claim 1, wherein said oscillator means includes an adjustable component for changing the output voltage of the apparatus within the range of 100-5,000V.
Claim 4
Dependent Claim 62 words
An apparatus according to claim 1, wherein the output electrodes comprise a conductive layer connected to said direct signal provided by said rectifying means, a supporting member at the back of the conductive layer and an insulating layer surrounding both the conductive layer and supporting member, said output electrodes are strong enough to be used as a spring for a fractured bone.
Claim 5
Dependent Claim 54 words
An apparatus according to claim 1 wherein the output electrodes are made up of a flexible conductive layer connected to said direct signal provided by said rectifying means, and a flexible insulating layer surrounding said conductive layer, whereby said output electrodes can made a conformable contact to the surface of the injured body part.
Claim 6
Dependent Claim 169 words
An electric field therapeutic apparatus comprising: a D.C. source; means for generating a pulse signal in the range of 0.1-100 Hz energized by said D.C. source; oscillating and transforming means connected to said pulse generating means for generating an alternating signal of specific frequency under the control of said pulse signal; voltage multiplier means for converting said alternating signal provided by said oscillating and transforming means into a direct pulse signal having a voltage in the range of 100-5,000V; step-up transforming means for stepping up said alternating signal provided by said oscillating and transforming means to a voltage in the range of 100-5,000V; switching means for selectively connecting said oscillating and transforming means to one of said voltage multiplier means and step-up transforming means; composite circuit means for connecting said voltage multiplier means and said step-up transforming means to an output terminal; and at least to insulated output electrodes connected to said output terminal for forming an electric field adjacent to an injured body part to fulfil therapeutic purposes.
Claim 7
Dependent Claim 169 words
An electric field therapeutic apparatus comprising: a D.C. source; means for generating a pulse signal in the range of 0.1-100 Hz energized by said D.C. source; oscillating and transforming means connected to said pulse generating means for generating an alternating signal of specific frequency under the control of said pulse signal; voltage multiplier means for converting said alternating signal provided by said oscillating and transforming means into a direct pulse signal having a voltage in the range of 100-5,000V; step-up transforming means for stepping up said alternating signal provided by said oscillating and transforming means to a voltage in the range of 100-5,000V; switching means for selectively connecting said oscillating and transforming means to one of said voltage multiplier means and step-up transforming means; composite circuit means for connecting said voltage multiplier means and said step-up transforming means to an output terminal; and at least to insulated output electrodes connected to said output terminal for forming an electric field adjacent to an injured body part to fulfil therapeutic purposes.
Claim 8
Dependent Claim 43 words
An apparatus according to claim 5, wherein said oscillating and transforming means comprises an oscillating circuit and a transformer, said transformer also works as an inductive component of said oscillating circuit, and said step-up transforming means is the third coil of said transformer.
Claim 9
Dependent Claim 58 words
An apparatus according to claim 5, wherein said output electrodes comprise a conductive layer connected to said output terminal; a supporting member at the back of said conductive layer; and an insulating layer surrounding both the conductive layer and the supporting member, said output electrodes are strong enough to be used as a sprint for a fractured bone.
Claim 10
Dependent Claim 48 words
An apparatus according to claim 5, wherein said output electrodes are made up of a flexible conductive layer connected to said output terminal; and a flexible insulating layer surrounding said conductive layer, whereby said output electrodes make a conformable contact to the surface of the injured body part.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-07-10 1993-01-09 1993-07-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-07-10 1997-01-09 1997-07-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-07-10 2001-01-09 2001-07-11 $7700.00 Window Closed / Lapsed

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