Patents by Inventor John Cadwell

John Cadwell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12178606
    Abstract: Systems, devices and methods are provided for neuromonitoring, particularly neuromonitoring to reduce the risks of contacting or damaging nerves or causing patient discomfort during and after surgical procedures, including spinal surgeries. The neuromonitoring procedures include monitoring for the presence of or damage to sensory nerves, and optionally includes additional monitoring for motor nerves. In some systems, including systems that monitor for both sensory and motor nerves, components of the monitoring systems (e.g., stimulating electrodes and response sensors), may be combined with one or more surgical instruments. The systems, devices, and methods provide for pre-surgical assessment of neural anatomy and surgical planning, intraoperative monitoring of nerve condition, and post-operative assessment of nerve position and health.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: December 31, 2024
    Assignee: Cadwell Laboratories, Inc.
    Inventors: Justin Scott, John Cadwell
  • Publication number: 20240355220
    Abstract: A training simulator for intraoperative neuromonitoring (IONM) systems includes channels where at least one of the channels is identified as an active stimulation channel and a subset of the rest of the channels is identified as reference or pick up sites. Channels of the subset having signal data that exceed a predefined threshold are retained for further processing, while channels with signal data that do not exceed the threshold are eliminated from further reporting. Response data for the remaining channels are generated in advance of a future time when the response would occur. The generated data is time stamped and stored for display at a time window when requested by the system.
    Type: Application
    Filed: April 5, 2024
    Publication date: October 24, 2024
    Inventors: John A. Cadwell, Melissa Miles, Mark Romero
  • Publication number: 20240341682
    Abstract: An intraoperative neurophysiological monitoring (IONM) system for identifying and assessing neural structures comprises at least one probe, at least one reference electrode, at least one strip or grid electrode, at least one sensing electrode, and a stimulation module. Threshold responses determined by stimulation during a surgical procedure are used to identify and assess functionality of neural structures. The identified neural structures are avoided and preserved while diseased or damaged tissue is resected during said surgical procedure.
    Type: Application
    Filed: April 18, 2024
    Publication date: October 17, 2024
    Inventors: Melissa Kirkup, Richard A. Villarreal, John A. Cadwell, JR.
  • Publication number: 20240341650
    Abstract: The present specification discloses an intraoperative neurophysiological monitoring (IONM) system including a computing device capable of executing an IONM software engine, a stimulation module having multiple ports and various stimulation components and recording electrodes. The system is used to implement transcranial electrical stimulation and motor evoked potential monitoring by positioning at least one recording electrode on a patient, connecting the stimulation components to at least one port on the stimulation module, positioning the stimulation components on a patient's head, activating, using the IONM software engine, at least one port, delivering stimulation to the patient; and recording a stimulatory response on the patient.
    Type: Application
    Filed: April 24, 2024
    Publication date: October 17, 2024
    Inventors: Rose Rehfeldt, Ivan Amaya, John A. Cadwell, John A. Cadwell, JR.
  • Publication number: 20240345029
    Abstract: A system for measuring the carbon dioxide (CO2) concentration in an air sample. The system functions by buffering the air sample, measuring a transit time of sound in the air sample across a predefined distance, and determining a CO2 concentration in the air sample based on at least the temperature of the air sample and the determined transit time of the sound.
    Type: Application
    Filed: March 22, 2024
    Publication date: October 17, 2024
    Inventor: John A. Cadwell
  • Publication number: 20240285369
    Abstract: Systems, devices and methods for advanced electrode management in neurological monitoring applications include receiving sockets configured to receive connectors having groups of electrodes. The physician is not required to manually map each electrode with its corresponding input channel. Electrodes are coupled to the corresponding input channels in groups through connectors having a unique identification (ID). The system is configured to read the unique ID of each connector and establish its identity. Based on the ID, the system configures itself to automatically correlate or associate each electrode with its corresponding input channel when the connectors are first inserted into the receiving sockets, and again if the connectors are removed and re-inserted into different positions in the receiving sockets, to insure the electrodes are always mapped to the same input channels.
    Type: Application
    Filed: March 7, 2024
    Publication date: August 29, 2024
    Inventors: John A. Cadwell, Patrick Scott Jensen, Brandon Vazquez, Wayne Dearing
  • Publication number: 20240269461
    Abstract: A system for deploying an electrode array at a target location through a hole formed in the patient's cranium. The system includes an array of electrodes attached to a substrate and an inserter attached to the substrate and/or the array of electrodes. The inserter, substrate and array of electrodes are configured into a first compressed state and are positioned within the lumen of a cannula. Using the cannula, the system is inserted through the hole, the cannula is then removed, and the inserter is used to transition the substrate and electrode array from the first compressed state to a second uncompressed state, thereby deploying the array of electrodes at the target location.
    Type: Application
    Filed: February 22, 2024
    Publication date: August 15, 2024
    Inventor: John A. Cadwell
  • Publication number: 20240206793
    Abstract: Methods of performing diagnostic tests on electroencephalography (EEG) recording devices comprising at least one stimulator coupled with a plurality of EEG electrode recording channels and corresponding recording channel connectors are performed by a test fixture comprising a plurality of resistors coupled with one or more of the EEG electrode recording channels and corresponding recording channel connectors. The methods include performing an impedance test for determining if each EEG recording channel of the EEG recording device has a predefined impedance, performing a channel uniqueness test for each EEG recording channel, performing a test for verifying the state of a switch of the stimulator of the EEG recording device, and performing a test for verifying connector IDs of the recording channel connectors connecting the EEG electrodes to respective EEG recording channels.
    Type: Application
    Filed: December 29, 2023
    Publication date: June 27, 2024
    Inventors: Ethan Rhodes, Richard A. Villarreal, John A. Cadwell, Rose Rehfeldt
  • Patent number: 11998338
    Abstract: The present specification discloses an intraoperative neurophysiological monitoring (IONM) system including a computing device capable of executing an IONM software engine, a stimulation module having multiple ports and various stimulation components and recording electrodes. The system is used to implement transcranial electrical stimulation and motor evoked potential monitoring by positioning at least one recording electrode on a patient, connecting the stimulation components to at least one port on the stimulation module, positioning the stimulation components on a patient's head, activating, using the IONM software engine, at least one port, delivering stimulation to the patient; and recording a stimulatory response on the patient.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: June 4, 2024
    Inventors: Rose Rehfeldt, Ivan Amaya, John A. Cadwell, John A. Cadwell, Jr.
  • Patent number: 11992339
    Abstract: An intraoperative neurophysiological monitoring (IONM) system for identifying and assessing neural structures comprises at least one probe, at least one reference electrode, at least one strip or grid electrode, at least one sensing electrode, and a stimulation module. Threshold responses determined by stimulation during a surgical procedure are used to identify and assess functionality of neural structures. The identified neural structures are avoided and preserved while diseased or damaged tissue is resected during said surgical procedure.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: May 28, 2024
    Inventors: Melissa Kirkup, Richard A. Villarreal, John A. Cadwell, Jr.
  • Patent number: 11978360
    Abstract: A training simulator for intraoperative neuromonitoring (IONM) systems includes channels where at least one of the channels is identified as an active stimulation channel and a subset of the rest of the channels is identified as reference or pick up sites. Channels of the subset having signal data that exceed a predefined threshold are retained for further processing, while channels with signal data that do not exceed the threshold are eliminated from further reporting. Response data for the remaining channels are generated in advance of a future time when the response would occur. The generated data is time stamped and stored for display at a time window when requested by the system.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: May 7, 2024
    Inventors: John A. Cadwell, Melissa Miles, Mark Romero
  • Patent number: 11950972
    Abstract: Systems, devices and methods for advanced electrode management in neurological monitoring applications include receiving sockets configured to receive connectors having groups of electrodes. The physician is not required to manually map each electrode with its corresponding input channel. Electrodes are coupled to the corresponding input channels in groups through connectors having a unique identification (ID). The system is configured to read the unique ID of each connector and establish its identity. Based on the ID, the system configures itself to automatically correlate or associate each electrode with its corresponding input channel when the connectors are first inserted into the receiving sockets, and again if the connectors are removed and re-inserted into different positions in the receiving sockets, to insure the electrodes are always mapped to the same input channels.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: April 9, 2024
    Inventors: John A. Cadwell, Patrick Scott Jensen, Brandon Vazquez, Wayne Dearing
  • Patent number: 11938313
    Abstract: A system for deploying an electrode array at a target location through a hole formed in the patient's cranium. The system includes an array of electrodes attached to a substrate and an inserter attached to the substrate and/or the array of electrodes. The inserter, substrate and array of electrodes are configured into a first compressed state and are positioned within the lumen of a cannula. Using the cannula, the system is inserted through the hole, the cannula is then removed, and the inserter is used to transition the substrate and electrode array from the first compressed state to a second uncompressed state, thereby deploying the array of electrodes at the target location.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: March 26, 2024
    Inventor: John A. Cadwell
  • Patent number: 11896378
    Abstract: Methods of performing diagnostic tests on electroencephalography (EEG) recording devices comprising at least one stimulator coupled with a plurality of EEG electrode recording channels and corresponding recording channel connectors are performed by a test fixture comprising a plurality of resistors coupled with one or more of the EEG electrode recording channels and corresponding recording channel connectors. The methods include performing an impedance test for determining if each EEG recording channel of the EEG recording device has a predefined impedance, performing a channel uniqueness test for each EEG recording channel, performing a test for verifying the state of a switch of the stimulator of the EEG recording device, and performing a test for verifying connector IDs of the recording channel connectors connecting the EEG electrodes to respective EEG recording channels.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: February 13, 2024
    Inventors: Ethan Rhodes, Richard A. Villarreal, John A. Cadwell, Rose Rehfeldt
  • Publication number: 20240033391
    Abstract: A portable air treatment system configured to be carried by an individual and deliver air, via a mask, to the individual, is provided. The system includes an air inlet allowing atmospheric air to enter at an air flow rate ranging between 2 liters/min to 10 liters/min, an air compression system connected with the air inlet for compressing the incoming air, thereby increasing the temperature of the air to a minimum temperature of 170° C., a hot air chamber connected with the air compression system for receiving the heated air from the air compression system and retaining the heated air for a period of 30-100 milliseconds, an air decompression system connected with the heated air chamber for expanding the heated air thereby decreasing the temperature of the heated air to a temperature ranging between 14° C. to 45° C., and an air outlet connected with the air expansion system for directing the cooled air to the individual via the mask.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 1, 2024
    Inventor: John A. Cadwell
  • Publication number: 20240000366
    Abstract: A system for EEG data acquisition and presentation includes a neuromonitoring medical system for capturing electrical activity of a patient's brain as EEG signals via EEG electrodes, a server coupled with the neuromonitoring medical system for processing the captured EEG signals and transmitting the processed EEG signals, and a client device for receiving and displaying the processed EEG signals for viewing by a clinician. The server includes modules for paginating EEG signals into data pages of compressed EEG data, binning the paginated EEG data into groups of predefined frequencies, analyzing the binned EEG data to determine signals of interest, and marking the signals of interest with predefined signal markers. The client device enables the clinician to stop the display upon encountering a signal marker and display windows containing low resolution EEG signals in the vicinity of the EEG data containing the signal marker.
    Type: Application
    Filed: May 4, 2023
    Publication date: January 4, 2024
    Inventor: John A. Cadwell
  • Publication number: 20230255534
    Abstract: Methods and systems for conditioning a signal indicative of electrosurgical unit activity are described. A hardware circuit acquires AC current from an electrosurgical unit on patient isolated circuitry and conditions the signal in either of two alternate processing methods. The processed signal is routed as input to an analog to digital converter circuit. A method for determining saturation on referential inputs and recovering inputs to an unsaturated state is also described.
    Type: Application
    Filed: February 2, 2023
    Publication date: August 17, 2023
    Inventors: Ivan Amaya, Michael Batdorf, Ross Delvin, Jason McCann, John A. Cadwell, Ethan Rhodes, Richard A. Villarreal
  • Patent number: 11717590
    Abstract: A portable air treatment system configured to be carried by an individual and deliver air, via a mask, to the individual, is provided. The system includes an air inlet allowing atmospheric air to enter at an air flow rate ranging between 2 liters/min to 10 liters/min, an air compression system connected with the air inlet for compressing the incoming air, thereby increasing the temperature of the air to a minimum temperature of 170° C., a hot air chamber connected with the air compression system for receiving the heated air from the air compression system and retaining the heated air for a period of 30-100 milliseconds, an air decompression system connected with the heated air chamber for expanding the heated air thereby decreasing the temperature of the heated air to a temperature ranging between 14° C. to 45° C., and an air outlet connected with the air expansion system for directing the cooled air to the individual via the mask.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 8, 2023
    Inventor: John A. Cadwell
  • Publication number: 20230190206
    Abstract: The present specification describes a system and method of detecting sleep disordered breathing, that includes acquiring a set of unconditioned sleep test data that includes oximetry data and at least one other physiological sensor data; sampling the set of unconditioned sleep test data; storing the sampled set of unconditioned sleep test data; receiving, through a display, an input indicative of a degree of analyzing to be applied to the sampled set of unconditioned sleep test data; based on said input, applying a corresponding degree of analyzing to the unprocessed sleep test data to generate processed sleep test data; and visually displaying the processed sleep test data.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Inventors: Scott Barcus, James Blevins, John A. Cadwell, Kacee Giger, Colton Wallin
  • Publication number: 20230119063
    Abstract: Systems and methods for ultrasound imaging include obtaining RF data using an ultrasound probe and processing the RF data in-parallel to generate B-mode data and echo intensity data during ultrasound examination of a patient. The RF data is analyzed in real-time to provide a user with live ultrasound image and echogenicity analytics. Based on the echogenicity analytics, the user may reposition the ultrasonic probe to adjust and select an optimal probe angle to ensure reproducible results. Providing live RF data allows the user to assess the health of nerves and muscles in real-time and make dynamic decisions on further exams to perform during the same office visit.
    Type: Application
    Filed: August 30, 2022
    Publication date: April 20, 2023
    Inventors: Abram Gardner, Michal Holub, JR., John A. Cadwell