Electromechanical adjusting instrument

What is this patent about?

’699 is related to the field of electromechanical medical devices, specifically chiropractic adjusting instruments designed to deliver controlled dynamic forces to the human body. Traditional manual manipulation often lacks reproducibility and precision in force application, leading to a need for automated tools that can provide consistent, high-frequency impulses. The background context involves the challenge of delivering therapeutic energy that is tuned to the mechanical response of musculoskeletal tissue while ensuring the device operates safely and effectively across varying power sources.

The underlying idea behind ’699 is the integration of a closed-loop feedback system that utilizes real-time biomechanical data to optimize the adjustment process. By embedding a sensing device, such as an accelerometer or load cell, directly into the thrust mechanism, the instrument can monitor how the patient’s body responds to each individual impulse. This allows the device to shift from a simple mechanical striker to an intelligent system that can detect changes in spinal mobility and automatically adjust its firing parameters or cease operation once a therapeutic threshold is reached.

The claims of ’699 focus on a method for controlling the instrument by analyzing accelerometer peak signals generated during the impact sequence. The independent claims describe a process of initializing mobility data, delivering at least two pulses to a body, and comparing the resulting peak signals to determine if maximum spinal mobility has been achieved. This logic is used to either deactivate the impact head once a specific mobility increase is detected or to dynamically set the pulse rate and dosage based on the sensing processing unit’s evaluation of the tissue response.

In practice, the invention utilizes a solenoid-driven core that strikes a thrust nose piece, which is interlocked by a preload switch to ensure the device only fires when proper pressure is applied against the patient. A programmable microprocessor manages the electronic pulse system, converting AC power into a precise waveform—ideally a half sine wave—that is independent of line voltage fluctuations. As the device fires in a multiple-pulse mode, the internal sensor captures the acceleration curve of the impact, providing the data necessary for the processor to calculate the stiffness of the targeted joint.

This approach differs from prior art by moving beyond fixed-force delivery to a diagnostic-therapeutic hybrid model. While older devices relied on the clinician to manually determine when an adjustment was complete, this invention uses the comparison between a baseline pulse and subsequent readings to identify the point of maximum mobility. By automatically adjusting the pulse frequency between 2 Hz and 10 Hz based on the time interval between acceleration peaks, the instrument ensures that the energy delivered is always synchronized with the dynamic mechanical impedance of the patient's spine.