Patents by Inventor John A. Cadwell
John A. 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).
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Publication number: 20200108246Abstract: 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: ApplicationFiled: September 18, 2019Publication date: April 9, 2020Inventor: John A. Cadwell
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Publication number: 20200093566Abstract: 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: ApplicationFiled: November 27, 2019Publication date: March 26, 2020Inventors: John A. Cadwell, Patrick Scott Jensen, Brandon Vasquez, Wayne Dearing
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Publication number: 20200000547Abstract: 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: ApplicationFiled: February 5, 2019Publication date: January 2, 2020Inventor: John A. Cadwell
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Publication number: 20190336019Abstract: 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: ApplicationFiled: May 3, 2019Publication date: November 7, 2019Inventors: Rose Rehfeldt, Ivan Amaya, John A. Cadwell, John A. Cadwell, JR.
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Publication number: 20190336073Abstract: 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: ApplicationFiled: May 3, 2019Publication date: November 7, 2019Inventors: Melissa Kirkup, Richard A. Villarreal, John A. Cadwell, Jr.
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Publication number: 20190133476Abstract: Systems, devices, and methods are described for neuromonitoring. A minimum stimulus signal required to elicit a threshold neuromuscular response is determined by delivery of stimulus signals to tissue and detection of neuromuscular responses in muscle tissue. The strength of the delivered stimulus signals is varied, for example by adjusting the current amplitude or pulse width of the signals, and muscle responses are measure, for example by detecting EMG signals. The delivered stimuli and corresponding responses are then used to determine a stimulation threshold. The stimulation threshold may be used to indicate at least one of nerve proximity and pedicle integrity.Type: ApplicationFiled: July 3, 2018Publication date: May 9, 2019Inventor: John Cadwell
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Publication number: 20190133522Abstract: 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: ApplicationFiled: September 12, 2018Publication date: May 9, 2019Inventors: Justin Scott, John Cadwell
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Patent number: 10238467Abstract: 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: GrantFiled: December 12, 2016Date of Patent: March 26, 2019Assignee: Cadwell Laboratories, Inc.Inventor: John A Cadwell
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Patent number: 10098585Abstract: 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: GrantFiled: March 12, 2014Date of Patent: October 16, 2018Assignee: Cadwell Laboratories, Inc.Inventors: Justin Scott, John Cadwell
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Patent number: 10039461Abstract: Systems, devices, and methods are described for neuromonitoring. A minimum stimulus signal required to elicit a threshold neuromuscular response is determined by delivery of stimulus signals to tissue and detection of neuromuscular responses in muscle tissue. The strength of the delivered stimulus signals is varied, for example by adjusting the current amplitude or pulse width of the signals, and muscle responses are measure, for example by detecting EMG signals. The delivered stimuli and corresponding responses are then used to determine a stimulation threshold. The stimulation threshold may be used to indicate at least one of nerve proximity and pedicle integrity.Type: GrantFiled: February 29, 2016Date of Patent: August 7, 2018Assignee: Cadwell Laboratories, Inc.Inventor: John Cadwell
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Publication number: 20180161123Abstract: 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: ApplicationFiled: December 12, 2016Publication date: June 14, 2018Inventor: John A. Cadwell
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Publication number: 20180125421Abstract: An apparatus, system, and method are disclosed for mapping the location of a nerve. The apparatus includes at least one stimulation module, a stimulation detection module, a distance module, and a mapping module. The stimulation module stimulates a nerve with an electrical stimulation current from at least one stimulation electrode. A stimulation detection module detects a muscle reaction resulting from stimulation of the nerve by the at least one stimulation electrode. The distance module uses information from the at least one stimulation electrode and from the stimulation detection module to calculate a distance between the at least one stimulation electrode and the nerve. The mapping module maps a location on the nerve using at least two distances calculated by the distance module and position information of the at least one stimulation electrode for each of the at least two distances calculated.Type: ApplicationFiled: July 26, 2017Publication date: May 10, 2018Inventor: John A. Cadwell
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Patent number: 9730634Abstract: An apparatus, system, and method are disclosed for mapping the location of a nerve. The apparatus includes at least one stimulation module, a stimulation detection module, a distance module, and a mapping module. The stimulation module stimulates a nerve with an electrical stimulation current from at least one stimulation electrode. A stimulation detection module detects a muscle reaction resulting from stimulation of the nerve by the at least one stimulation electrode. The distance module uses information from the at least one stimulation electrode and from the stimulation detection module to calculate a distance between the at least one stimulation electrode and the nerve. The mapping module maps a location on the nerve using at least two distances calculated by the distance module and position information of the at least one stimulation electrode for each of the at least two distances calculated.Type: GrantFiled: September 25, 2015Date of Patent: August 15, 2017Assignee: Cadwell LabsInventor: John Cadwell
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Publication number: 20160174861Abstract: Systems, devices, and methods are described for neuromonitoring. A minimum stimulus signal required to elicit a threshold neuromuscular response is determined by delivery of stimulus signals to tissue and detection of neuromuscular responses in muscle tissue. The strength of the delivered stimulus signals is varied, for example by adjusting the current amplitude or pulse width of the signals, and muscle responses are measure, for example by detecting EMG signals. The delivered stimuli and corresponding responses are then used to determine a stimulation threshold. The stimulation threshold may be used to indicate at least one of nerve proximity and pedicle integrity.Type: ApplicationFiled: February 29, 2016Publication date: June 23, 2016Inventor: John Cadwell
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Patent number: 9295401Abstract: Systems, devices, and methods are described for neuromonitoring. A minimum stimulus signal required to elicit a threshold neuromuscular response is determined by delivery of stimulus signals to tissue and detection of neuromuscular responses in muscle tissue. The strength of the delivered stimulus signals is varied, for example by adjusting the current amplitude or pulse width of the signals, and muscle responses are measure, for example by detecting EMG signals. The delivered stimuli and corresponding responses are then used to determine a stimulation threshold. The stimulation threshold may be used to indicate at least one of nerve proximity and pedicle integrity.Type: GrantFiled: November 27, 2013Date of Patent: March 29, 2016Assignee: CADWELL LABORATORIES, INC.Inventor: John Cadwell
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Publication number: 20160081621Abstract: An apparatus, system, and method are disclosed for mapping the location of a nerve. The apparatus includes at least one stimulation module, a stimulation detection module, a distance module, and a mapping module. The stimulation module stimulates a nerve with an electrical stimulation current from at least one stimulation electrode. A stimulation detection module detects a muscle reaction resulting from stimulation of the nerve by the at least one stimulation electrode. The distance module uses information from the at least one stimulation electrode and from the stimulation detection module to calculate a distance between the at least one stimulation electrode and the nerve. The mapping module maps a location on the nerve using at least two distances calculated by the distance module and position information of the at least one stimulation electrode for each of the at least two distances calculated.Type: ApplicationFiled: September 25, 2015Publication date: March 24, 2016Inventor: John Cadwell
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Publication number: 20160000382Abstract: Systems, devices and methods are described for physiological monitoring, for example monitoring EEG signals to detect the onset or probability of adverse events. The systems, devices and methods discussed herein may monitor received EEG signals to identify trends or patterns in the signal that are either indicative of ongoing seizures or indicative of a future risk of seizure. The systems, devices and methods provide the user with increased control and flexibility in the monitoring processes that produce the alerts. In particular, in some implementations the physician is able to make adjustments during monitoring and customize the process by which EEG data is displayed and analyzed during the patient monitoring without pausing the monitoring to make the adjustments.Type: ApplicationFiled: July 1, 2014Publication date: January 7, 2016Inventors: Jinesh J. Jain, John Cadwell, Alison Rhoades
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Patent number: 9155503Abstract: An apparatus, system, and method are disclosed for mapping the location of a nerve. The apparatus includes at least one stimulation module, a stimulation detection module, a distance module, and a mapping module. The stimulation module stimulates a nerve with an electrical stimulation current from at least one stimulation electrode. A stimulation detection module detects a muscle reaction resulting from stimulation of the nerve by the at least one stimulation electrode. The distance module uses information from the at least one stimulation electrode and from the stimulation detection module to calculate a distance between the at least one stimulation electrode and the nerve. The mapping module maps a location on the nerve using at least two distances calculated by the distance module and position information of the at least one stimulation electrode for each of the at least two distances calculated.Type: GrantFiled: October 27, 2010Date of Patent: October 13, 2015Assignee: Cadwell LabsInventor: John Cadwell
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Publication number: 20140275926Abstract: 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: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Inventors: Justin Scott, John Cadwell
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Publication number: 20140148725Abstract: Systems, devices, and methods are described for neuromonitoring. A minimum stimulus signal required to elicit a threshold neuromuscular response is determined by delivery of stimulus signals to tissue and detection of neuromuscular responses in muscle tissue. The strength of the delivered stimulus signals is varied, for example by adjusting the current amplitude or pulse width of the signals, and muscle responses are measure, for example by detecting EMG signals. The delivered stimuli and corresponding responses are then used to determine a stimulation threshold. The stimulation threshold may be used to indicate at least one of nerve proximity and pedicle integrity.Type: ApplicationFiled: November 27, 2013Publication date: May 29, 2014Inventor: John Cadwell