Nerve stimulating device and associated support device

• US 5,487,759 A
• Filed: 06/14/1993
• Issued: 01/30/1996
• Est. Priority Date: 06/14/1993
• Status: Expired due to Term

• Current Assignee: DJO LLC (Enovis Corp.), Agency For Science Technology and Research (Government of Singapore), Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Agency For Science Technology and Research (Government of Singapore), Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Kolen, Paul T., Bastyr, Charles A.
• Primary Examiner(s): Manuel, George
• Assistant Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US08/077,349
• Time in Patent Office: 960 Days
• Field of Search: 128/639, 128/644, 607/46, 607/48, 607/49, 607/72, 607/74, 607/115, 607/149, 607/152
• US Class Current: 607/149
• CPC Class Codes: A61N 1/0452 Specially adapted for transcutaneous muscle stimulation [TMS]
• CPC Class Codes: A61N 1/0456 Specially adapted for transcutaneous electrical nerve stimulation [TENS]
• CPC Class Codes: A61N 1/36021 for treatment of pain

Abstract

An electrical nerve and an electrical muscle stimulation device used in association with a support unit. The stimulation device is adaptable to be selectively engageable with a plurality of different body braces such that output connectors associated with the stimulation device electrically contact keyed connectors associated with a mounting carrier secured to the particular support unit. The support means includes at least two electrode pads which are selectively positionable at different locations on the support means. The connection between the output connectors of the stimulation device and the keyed connectors applies a stimulation signal to the electrode pads the size of which determines the carrier frequency of the stimulation signal which is impedance matched to the electrode size.

Claims

1. An electrical stimulation system for applying a stimulation signal to a human user, said system comprising:

stimulation means for generating modulated electrical signals having a waveform of predetermined amplitude and therapeutic frequency;

support means removably attachable to a human user for carrying said stimulation means in proximity to said human user, said support means including a connection means for physically and electrically connecting said stimulation means to said support means;

a plurality of electrode pads of a predetermined size disposed on said support means so as to be positioned against the skin of said user when the support means is in position on the user; and

said connection means electrically connecting the stimulation means to the electrode pads when the stimulation means is connected to the support means;

said connection means including a plurality of keyed connectors, the keyed connectors being configured to be representative of said size of the electrode pads, said stimulation means including a plurality of output connectors for engaging with said keyed connectors, said stimulation means including means for modifying the electrical signals in response to the configuration of the keyed connectors so as to match the impedance of said electrode pads.

2. The electrical stimulation system according to claim 1 wherein;

the electrode pads are selectively removable from the support means and positionable at alternate locations on the support means.

3. The electrical stimulation system according to claim 2 wherein;

the electrode pads are comprised of silicone conductive rubber electrodes covered by a water wicking material at a surface disposed adjacent the skin of said user and a loop material covering a surface adjacent the support means, wherein the water wicking material holds water so as to provide a layer of conductive water between the skin and the electrode pads.

4. The electrical stimulation system according to claim 1, wherein;

said connection means including a rigid carrier for accepting the stimulation means, said carrier including said keyed connectors, said stimulation means including output connectors for carrying said electrical signals wherein the output connectors of the stimulation means electrically contact the keyed connectors when the stimulation means is secured to the carrier.

5. The electrical stimulation system according to claim 4 wherein;

at least two of the keyed connectors are connected to the electrode pads.

6. The electrical stimulation system according to claim 4 wherein;

the stimulation means including a microcontroller, said microcontroller selecting a carrier frequency to be impedance matched to an electrical load existing at the skin of the user, being stimulated.

7. The electrical stimulation system according to claim 6 wherein;

said connection means includes eight keyed connectors, wherein two of the keyed connectors are connected to electrode pads of a first channel of the system, two of the remaining keyed connectors are electrically connected to electrode pads for a second channel and the remaining three keyed connectors represent a three-bit code for determining the size of said electrode pads.

8. The electrical stimulation system according to claim 1 further comprising:

a plurality of keys coupled to the stimulation means including a first intensity control key and a second intensity control key, wherein the first intensity control key increases the waveform amplitude and the second intensity control key decreases the waveform amplitude.

9. The electrical stimulation system according to claim 1 further comprising:

a plurality of keys coupled to the stimulation means including a first frequency control key and a second frequency control key, wherein the first frequency control key increases the therapeutic frequency of the waveform and the second frequency control key decreases the therapeutic frequency of the waveform.

10. The electrical stimulation system according to claim 1 further comprising:

a plurality if keys coupled to the stimulation means including, an intensity surge key, an intensity/frequency surge key, a strength duration surge key, and a surge rate key, wherein the intensity surge key increases and decreases the amplitude of the therapeutic frequency of the waveform, the frequency surge program key increases and decreases the therapeutic frequency of the waveform, the intensity/frequency surge key alters the amplitude and frequency of the therapeutic waveform such that as the frequency decreases the amplitude increases and as the frequency increases the amplitude decreases.

11. The electrical stimulation system according to claim 1 wherein;

the stimulation means includes a removable power source for providing power.

12. An electrical stimulation system for applying a stimulation signal to living tissue, said system comprising:

stimulation means for applying electrical signals to living tissue, said stimulation means being adapted to be physically and electrically connected to a support means;

support means removably attachable to a human user for carrying said stimulation means in proximity to a human user, said support means including a connection means for physically and electrically connecting said stimulation means to said support means;

said connection means including a rigid carrier for accepting the stimulation means; and

wherein the support means comprises a neoprene brace and the carrier is constructed of molded plastic, the carrier being attached to the support means, and wherein the stimulation means includes grooves, and the support means includes tabs which engage with the grooves when the stimulation means is secured to the carrier.

13. An electrical stimulation system comprising:

electrical stimulation device removably inserted into a support device adapted to be connected to a human body, said support device including a plurality of electrode pads;

securing means allowing the stimulation device to be secured to the support device;

a series of keyed connectors on the support device;

a series of output connectors on the electrical stimulation device, said output connectors electrically connected to said series of keyed connectors on the support device when the stimulation device is secured to the support device, wherein a plurality of the output connectors are connectable to said plurality of electrode pads;

pulse generating means for generating a stimulation signal, wherein the stimulation signal is a therapeutic waveform having an amplitude and a therapeutic frequency and a carrier frequency; and

a predetermined number of the output connectors being engageable with a predetermined number of the keyed connectors in the support device, the keyed connectors in the support device being configured to be representative of the size of the electrode pads;

said pulse generating means including means for generating a stimulation signal having a predetermined carrier frequency that is impedance matched to said electrode pads in response to said keyed connectors'"'"' configuration.

14. The system according to claim 13, further comprising;

a plurality of keys coupled to the electrical stimulation device including a first intensity control key and a second intensity control key, wherein the first intensity control key increases the therapeutic waveform amplitude and a second intensity control key decreases the therapeutic waveform amplitude.

15. The system according to claim 13, further comprising;

a plurality of keys coupled to said electrical stimulation device including a first frequency control key and a second frequency control key, wherein the first frequency control key increases the therapeutic frequency of the waveform and the second frequency control key decreases the therapeutic frequency of the waveform.

16. The system according to claim 13, further comprising;

an intensity surge key coupled to said electrical stimulation device, said intensity surge key operable to increase and decrease the amplitude of the therapeutic frequency of the waveform.

17. The system according to claim 13, further comprising;

a frequency surge key coupled to said electrical stimulation device, said frequency surge key operable to increase and decrease the therapeutic frequency of the waveform in a cyclical fashion.

18. The system according to claim 13, further comprising;

a intensity/frequency surge key coupled to said electrical stimulation device, said intensity/frequency surge key operable to alter the amplitude and frequency of the therapeutic frequency of the waveform in a cyclical fashion such that as the therapeutic frequency decreases, the amplitude increases and as the therapeutic frequency increases, the amplitude decreases.

19. The system according to claim 13, further comprising;

said therapeutic waveform having a cycle rate and said stimulation device including;

a surge rate key coupled to said electrical stimulation device, said surge rate key controlling the cycle rate for each type of varying therapeutic waveform.

20. An electrical stimulation system comprising:

electrical stimulation device removably inserted into a support device adapted to be connected to a human body, said support device including a plurality of electrode pads;

a series of output connectors, said output connectors electrically connected to said series of keyed connectors on the support device when the stimulation device is secured to the support device, wherein a plurality of the output connectors are connectable to said plurality of electrode pads;

pulse generating means for generating a stimulation signal, wherein the stimulation signal is a therapeutic waveform including a therapeutic frequency and a carrier frequency, said stimulation device having a housing; and

securing means comprising a first groove on a first side of said housing and a second groove on a second side of the housing for securing said housing to said support device, said support device having tab portions engageable with said grooves.