Method and apparatus for ultrasonic treatment of reflex sympathetic dystrophy

• US 6,432,070 B1
• Filed: 05/09/2000
• Issued: 08/13/2002
• Est. Priority Date: 05/11/1999
• Status: Expired due to Fees

• Current Assignee: Exogen Inc. (Bioventus LLC)
• Original Assignee: Exogen Inc. (Bioventus LLC)
• Inventors: Talish, Roger J., Winder, Alan A.
• Primary Examiner(s): Lateef, Marvin M.
• Assistant Examiner(s): Lin, Jeoyuh
• Application Number:
  US09/568,481
• Time in Patent Office: 826 Days
• Field of Search: 601/2, 601/1, 601/3, 600/437, 600/439
• US Class Current: 601/2
• CPC Class Codes: A61N 7/00 Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092

Abstract

The invention relates to apparatus and method for therapeutically treating reflex sympathetic dystrophy using ultra sound. The apparatus includes at least one ergonomically constructed ultrasonic transducer configured to cooperate with a placement module or strip for placement in proximity to pain receptors of the sympathetic nervous system. The apparatus also utilizes a portable, ergonomically constructed main operating unit constructed to fit within a pouch worn by the patient. In operation, at least one ultrasonic transducer positioned in proximity to the pain receptors of the sympathetic nervous system is excited for a predetermined period of time. To ensure that at least one ultrasonic transducer is properly positioned, and to insure compliance with a treatment protocol, a safety interlock is provided to prevent inadvertent excitation of the at least one ultrasonic transducer. In an alternate embodiment, the apparatus includes a treatment basin having a plurality of ultrasonic transducer assemblies placed on the perimeter thereof. The patient places an injured part of the body therein and the transducer assemblies are excited to impinge ultrasonic waves to the injured part of the body.

Claims

1. A kit for ultrasonically treating reflex sympathetic dystrophy while maintaining patient mobility, which comprises:

an ultrasonic transducer assembly having at least one ultrasonic transducer;

a placement module configured to be worn by a patient, said placement module being configured to receive said transducer assembly such that when said placement module is worn said at least one ultrasonic transducer is positioned in proximity to pain receptors of the sympathetic nervous system;

an ultrasonic signal generator positioned in said ultrasonic transducer assembly;

a main operating unit; and

a sensor coupled to said main operating unit for sensing stimulation of said pain receptors.

2. The kit according to claim 1, wherein said ultrasonic signal generator includes signal generator circuitry and an internal power source connected to said signal generator circuitry, and said signal generator circuitry including a processor and means for generating a pulsed RF signal.

3. The kit according to claim 2, wherein said signal generator circuitry is coupled to a display for displaying treatment sequence data.

4. The kit according to claim 1, further comprising safety interlock means to prevent inadvertent excitation of said at least one ultrasonic transducer.

5. The kit according to claim 1, wherein said main operating unit is positioned within a pouch worn by the patient to permit portable operation thereof.

6. The kit according to claim 1, wherein the placement module is constructed from a conductive material and said at least one ultrasonic transducer is provided on said placement module is electrically coupled to said main operating unit via said conductive material.

7. The kit according to claim 1, wherein the placement module is custom molded for a particular patient.

8. A kit for ultrasonically treating reflex sympathetic dystrophy while maintaining patient mobility, which comprises:

a plurality of ultrasonic transducer assemblies each having an ultrasonic transducer;

a treatment basin configured for placement of an injured part of a patient'"'"'s body therein, said treatment basin being configured to receive said plurality of ultrasonic transducer assemblies such that when said injured part is placed within the treatment basin said ultrasonic transducers are positioned in proximity to pain receptors of the sympathetic nervous system;

an ultrasonic signal generator positioned in each of said ultrasonic transducer assemblies;

a main operating unit; and

a sensor coupled to said main operating unit for sensing stimulation of said pain receptors.

9. The kit according to claim 8, wherein said ultrasonic signal generator includes signal generator circuitry and an internal power source connected to said signal generator circuitry, and said signal generator circuitry including a processor and means for generating a pulsed RF signal.

10. The kit according to claim 8, wherein said treatment basin is filled with water to minimize the attenuation of ultrasonic waves emitted by said plurality of ultrasonic transducer assemblies.

11. The kit according to claim 8, wherein said treatment basin is overlaid with a cushion to provide comfort to the patient.

12. The kit according to claim 11, wherein said cushion is filled with a gel-like substance to prevent the attenuation of ultrasonic waves emitted by said plurality of ultrasonic transducer assemblies.

13. A method for ultrasonically treating reflex sympathetic dystrophy comprising the following steps:

providing a main operating unit having an internal power source coupled to an ultrasonic transducer assembly, said ultrasonic transducer assembly includes at least one ultrasonic transducer, an ultrasonic signal generator and signal generator circuitry therein;

providing a placement module configured to receive said transducer assembly such that when an injured part of a patient'"'"'s body is placed in proximity to said placement module, said at least one ultrasonic transducer is in proximity to pain receptors of the sympathetic nervous system;

sensing the stimulation of said pain receptors; and

exciting said at least one ultrasonic transducer to impinge ultrasonic waves at or near the pain receptors.

14. The method according to claim 13, wherein the placement module is a treatment basin.

15. A method for ultrasonically treating reflex sympathetic dystrophy while maintaining patient mobility, comprising the following steps:

releasably securing at least one ultrasonic transducer coupled to a signal generator to a strip;

affixing said strip on a patient'"'"'s such that said at least one transducer is in proximity to pain receptors of the sympathetic nervous system;

sensing the stimulation of said pain receptors; and

exciting said at least one ultrasonic transducer by actuating said signal generator to impinge ultrasonic waves to the pain receptors.

16. The method according to claim 15, further including the step of:

connecting said at least one ultrasonic transducer to an operating unit, said operating unit having an internal power source for permitting patient mobility during treatment.

17. The method according to claim 15, further including the step of:

placing a gel-like substance between the at least one transducer and the patient to minimize attenuation of said ultrasonic waves.