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Activator Methods International, Ltd.

Neuromechanical Innovations, LLC

Christopher J Colloca

Tony S Keller

Arlan W Fuhr

Jeffrey Keller, Legal Representative

Tony J Keller

A chiropractic adjusting instrument comprising a housing; thrust nose piece an impact head to contact a body, a preload switch plunger; a dampening spring; a solenoid having a core; a preload spring; a recoil spring; an electronic pulse system operatively connected to a power source to provide alternating current for energizing the solenoid to impart impulse energy from the core to the thrust nose piece which is reproducible and independent of the power source; and a trigger system for triggering the electronic pulse system comprising a switch activated by the preload switch plunger. Preferably, the chiropractic adjusting instrument includes one or more of the following: an intelligent universal AC power converter; optimized force-time waveform; pulse mode operation; a sensing device having a sense output and a suite of electromechanical components designed to promote reproducible dynamic force impulses and safe operation.

Electromechanical adjusting instrument

A chiropractic adjusting instrument comprising a housing; a thrust nose piece and an impact head to contact a body; a preload switch plunger; a dampening spring; a solenoid having a core; a preload spring; a recoil spring; an electronic pulse system operatively connected to a power source to provide alternating current for energizing the solenoid to impart impulse energy from the core to the thrust nose piece which is reproducible and independent of the power source; and a trigger system for triggering the electronic pulse system comprising an switch activated by the preload switch plunger. Preferably, the chiropractic adjusting instrument includes one or more of the following: an intelligent universal AC power converter; optimized force-time waveform; pulse mode operation; a sensing device having an sense output and a suite of electromechanical components designed to promote reproducible dynamic force impulses and safe operation.

A chiropractic adjusting instrument comprising a housing; a thrust nose piece and an impact head to contact a body; a preload switch plunger; a dampening spring; a solenoid having a core; a preload spring; a recoil spring; an electronic pulse system operatively connected to a power source to provide alternating current for energizing the solenoid to impart impulse energy from the core to the thrust nose piece which is reproducible and independent of the power source; and a trigger system for triggering the electronic pulse system comprising an switch activated by the preload switch plunger. Preferably, the chiropractic adjusting instrument includes one or more of the following: an intelligent universal AC power converter; optimized force-time waveform; pulse mode operation; and a suite of electromechanical components designed to promote reproducible dynamic force impulses and safe operation.

Studies investigating posteroanterior (PA) forces in spinal stiffness assessment have shown relationships to spinal level, body type, and lumbar extensor muscle activity. Little objective evidence is available discerning variation in PA stiffness and its clinical significance. The aim of this prospective clinical study was to determine the stiffness index and neuromuscular characteristics of the asymptomatic and symptomatic low back. Twenty-two subject underwent physical examination and completed outcome VAS, Oswestry, and SF-36 questionnaires. A hand-held spinal manipulation instrument, equipped with a load cell and accelerometer was used to deliver high rate (<0.1 sec) PA manipulative thrusts (450 N) to several common spinal landmarks including the posterior superior iliac spine (PSIS), sacral base, and L5, L4, L2, T12, T8 spinous (SP) and transverse processes (TP). Surface, linear enveloped, electromyographic (sEMG) recordings were obtained during the trusts from electrodes (8 leads) located over the L3 and L5 erector spinae. The accelerance (peak acceleration/peak force, kg ) or stiffness index and composite sEMG response was calculated for each of the trusts. Significantly increased SP stiffness (7.0 kg ) (P<0.05) and a more positive sEMG response was found in subjects with frequent or constant LBP symptoms in comparison to SP stiffness (6.5 kg ) of subjects with lesser symptom frequency. A positive sEMG response was associated with a significant increase (P<0.05) in the TP stiffness response to PA thrusts in comparison to negative neuromuscular responders. The average SP stiffness was 6.6% greater (P<0.05) and 19.1% greater (P<<0.001) than the average SI stiffness and average TP stiffness, respectfully.

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Chandler, AZ, United States of America

Christopher J Colloca