Electronic stimulating device for enhanced healing of soft tissue wounds

• US 4,895,154 A
• Filed: 02/19/1988
• Issued: 01/23/1990
• Est. Priority Date: 02/19/1988
• Status: Expired due to Term

• Current Assignee: Encore Medical Asset Corporation (Enovis Corp.), Staodynamics, Inc.
• Original Assignee: Staodynamics, Inc.
• Inventors: Owens, Alan R., Bartelt, James T.
• Primary Examiner(s): Jaworski, Francis
• Assistant Examiner(s): Manuel, George
• Application Number:
  US07/159,863
• Time in Patent Office: 704 Days
• Field of Search: 128/419 R, 128/421, 128/422, 128/423 R, 128/783
• US Class Current: 607/50
• CPC Class Codes: A61N 1/326 for promoting growth of cells, e.g. bone cells

Abstract

An electronic stimulating device for wound healing and, more particularly, for enhancing healing of soft tissue wounds. The device includes a plurality of signal generators for generating output pulses suitable for enhancing healing of soft tissue wounds by application of the output pulses through electrodes to the soft tissue to be healed. Two pairs of active electrodes are included along with a pair of return electrodes. Control signals from a pulse generator control generation of the output pulses and a digital timer is included for causing treatmet for a predetermined period of time. The intensity, polarity, and rate of the output pulses can be varied by rotation of control knobs on the front panel of the device or, alternately, can be effected by a series of switches located on the front panel of the device, with varying intensities of output being indicated by brightness varying light emitting diodes.

Claims

1. An electronic stimulating device for enhancing healing of soft tissue wounds, said device comprising:

signal generating means providing a stimulating signal suitable for enhancing healing of soft tissue, said stimulating signal having a peak current not greater than about 40 ma;

electrode means connected with said generating means for receiving said stimulating signal therefrom, said electrode means being adapted to be positioned contiguous to said soft tissue wound to be healed;

return electrode means adapted to be positioned adjacent to said soft tissue wound to be healed; and

control means connected with said signal generating means for controlling application of said stimulating signal to said soft tissue wound, said control means including timer means for causing application of said stimulating signal to said soft tissue wound for a predetermined time period.

2. The device of claim 1 wherein said control means includes pulse generating means for generating control pulses for application to said signal generating means for controlling application of said stimulating signal to said soft tissue, said timer means being connected with said pulse generating means.

3. The device of claim 2 wherein said timer means includes a timer connected with said signal generating means and indicating means connected with said timer for indicating a factor of time of treatment.

4. The device of claim 3 wherein indicating means includes at least one of visual indicating means and audible indicating means.

5. The device of claim 3 wherein said indicating means includes visual indicating means capable of indicating the remaining time of treatment as said factor of time of treatment.

6. The device of claim 1 wherein said timing means is adapted to provide for application of said stimulating signal to said soft tissue for a time period of about 30 minutes.

7. The device of claim 1 wherein said control means includes switching means for enabling power to be applied to said device, wherein said timer means includes an on/off control, wherein said timer means is inoperable except when said device is powered on by said switching means and said on/off control is in the on position, and wherein said timer means is connected with said switching means in a manner such that said timing means is precluded from terminating application of said stimulating signal by said device if said on/off control is actuated from the on position to the off position during a timing period.

8. The device of claim 1 wherein said device includes intensity indicative means connected with said signal generating means, the intensity of said intensity indicative means being indicative of the intensity of said stimulating signal.

9. An electronic stimulating device for enhancing healing of soft tissue wounds, said device comprising:

first and second pairs of signal generating means each of which provides a stimulating signal suitable for enhancing healing of soft tissue wounds;

first and second pairs of electrodes each of which is connected with a different one of said first and second pairs of signal generating means to receive said stimulating signals therefrom, said electrodes being adapted for positioning contiguous to a soft tissue wound to be healed;

first and second return electrodes adapted to be positioned adjacent to said soft tissue wound to be healed;

control means for controlling application of said stimulating signals to said soft tissue wound through said first and second pairs of electrodes; and

first and second indicating means connected with said first and second pairs of signal generating means, the intensity of said indicating means being indicative of the intensity of said stimulating signals provided by said first and second pairs of said signal generating means.

10. The device of claim 9 wherein said control means includes pulse generating means connected with said first and second pairs of signal generating means for providing pulsed output signals thereto as said stimulating signals.

11. The device of claim 9 wherein said control means includes timing means providing a timed treatment application of said stimulating signal to said soft tissue wound.

12. The device of claim 9 wherein said control means includes switching means for enabling power to be applied to said device, wherein said timer means includes an on/off control, wherein said timing means is inoperable except when said device is powered on by said switching means and said off/on control is in the on position, and wherein said timer means is connected with said switching means in a manner such that said timing means is precluded from terminating application of said stimulating signal by said device if said on/off control is changed to the off position during a timing period.

13. An electronic stimulating device for enhancing healing of soft tissue wounds, said device comprising:

first and second pairs of constant current devices providing constant current output pulses, said constant current pluses having a peak current not greater than about 40 ma;

first and second pairs of visual indicating means connected with said first and second pairs of constant current devices, the intensity of said visual indicating means being indicative of the intensities of said constant current output pulses;

first and second pairs of electrodes each pair of which is connected to a different pair of said first and second pairs of constant current devices, said electrodes being adapted to be positioned contiguous to a soft tissue wound to be healed and to receive said constant current output pulses from said first and second pairs of constant current devices;

first and second return electrodes adapted to be positioned adjacent to said soft tissue wound to be healed;

isolation means connected with said return electrodes;

power supply means for supplying a predetermined high voltage to said first and second pairs of constant current devices;

pulse generating means for providing a series of control pulses, said pulse generating means being connected with said constant current devices to control operation of the same whereby each of said constant current devices produces said constant current output pulses for healing of said soft tissue wounds;

intensity control means connected with said pulse generating means, said intensity control means including an on/off switch for powering said device on and off; and

timer means connected with said pulse generating means for enabling treatment by said stimulating pulses over a predetermined timed period, said timer means being connected with said intensity control means whereby operation of said timer means during said timed period can be terminated only by actuation of said on/off switch of said intensity control means from the on position to the off position.

14. The device of claim 13 wherein said device includes pulse limiting means connected with said first and second pairs of constant current devices.

15. The device of claim 13 wherein said timer means is a digital timer.

16. The device of claim 13 wherein said device includes polarity switching means connected with said first and second pairs of constant current devices.

17. The device of claim 16 wherein said device includes pulse rate selection means, and wherein polarity and rate changes of said output pulses effected during operation of said device by switching said polarity switching means and selection at said pulse rate selection means are gradually effected.

18. The device of claim 13 wherein said intensity control means includes switching means for switching the intensity of said applied stimulating pulses and wherein changes in intensity of said applied stimulating pulses are gradually effected.

19. The device of claim 13 wherein said device includes pause/resume switching means connected with said timer means.

20. The device of claim 13 wherein said first and second pairs of constant current devices provide output pulses having pulses and galvanic components.