Patents by Inventor Cygni Chan
Cygni Chan 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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Patent number: 9289165Abstract: In general, the invention is directed to methods and devices for determining an ion concentration in the extracellular fluid of a patient. As examples, the ion may be one or more of potassium, sodium, chloride, or calcium. A system includes an electrode deployed in or near a tissue, such as a skeletal muscle, of the patient. A pulse generator supplies one or more stimulations to the tissue, and a sensor, such as an accelerometer, detects the response of the tissue to the stimulations. A processor determines a concentration of ions in the extracellular fluid as a function of the response. The system may detect an ion imbalance based upon the determined concentration of ions.Type: GrantFiled: October 15, 2014Date of Patent: March 22, 2016Assignee: Medtronic, Inc.Inventors: Orhan Soykan, Timothy H. Robinson, James K. Carney, Tara L. Nahey, Cygni Chan
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Publication number: 20150032023Abstract: In general, the invention is directed to methods and devices for determining an ion concentration in the extracellular fluid of a patient. As examples, the ion may be one or more of potassium, sodium, chloride, or calcium. A system includes an electrode deployed in or near a tissue, such as a skeletal muscle, of the patient. A pulse generator supplies one or more stimulations to the tissue, and a sensor, such as an accelerometer, detects the response of the tissue to the stimulations. A processor determines a concentration of ions in the extracellular fluid as a function of the response. The system may detect an ion imbalance based upon the determined concentration of ions.Type: ApplicationFiled: October 15, 2014Publication date: January 29, 2015Applicant: MEDTRONIC, INC.Inventors: Orhan Soykan, Timothy H. Robinson, James K. Carney, Tara L. Nahey, Cygni Chan
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Patent number: 8903492Abstract: In general, the invention is directed to methods and devices for determining an ion concentration in the extracellular fluid of a patient. As examples, the ion may be one or more of potassium, sodium, chloride, or calcium. A system includes an electrode deployed in or near a tissue, such as a skeletal muscle, of the patient. A pulse generator supplies one or more stimulations to the tissue, and a sensor, such as an accelerometer, detects the response of the tissue to the stimulations. A processor determines a concentration of ions in the extracellular fluid as a function of the response. The system may detect an ion imbalance based upon the determined concentration of ions.Type: GrantFiled: February 7, 2006Date of Patent: December 2, 2014Assignee: Medtronic, Inc.Inventors: Orhan Soykan, Timothy H. Robinson, James K. Carney, Tara L. Nahey, Cygni Chan
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Patent number: 8229559Abstract: A system includes an episode classification module and a data retrieval module. The episode classification module receives electrograms (EGMs) from N implantable medical devices (IMDs) and determines whether the EGMs are associated with deliveries of therapy by the N IMDs. The episode classification module analyzes at least some of the EGMs and determines whether the deliveries or non-deliveries of therapy by the IMDs were appropriate. The data retrieval module receives a request from a computing device, via a network, that indicates at least two groups of the N IMDs. The data retrieval module provides to the computing device via the network, in response to the request, data for presentation to a user that indicates for each of the groups, at least one of how many of the one or more deliveries or non-deliveries were appropriate, or how many of the one or more deliveries or non-deliveries were inappropriate.Type: GrantFiled: July 15, 2010Date of Patent: July 24, 2012Assignee: Medtronic, Inc.Inventors: Hendrikus A. Westendorp, Cygni Chan, Amisha S. Patel, Denise Dirnberger, Jean K. Ringold, Kevin T. Ousdigian, Robert B. Trojan, Nelson H. Soken, Karen J. Kleckner
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Publication number: 20120016432Abstract: A system includes an episode classification module and a data retrieval module. The episode classification module receives electrograms (EGMs) from N implantable medical devices (IMDs) and determines whether the EGMs are associated with deliveries of therapy by the N IMDs. The episode classification module analyzes at least some of the EGMs and determines whether the deliveries or non-deliveries of therapy by the IMDs were appropriate. The data retrieval module receives a request from a computing device, via a network, that indicates at least two groups of the N IMDs. The data retrieval module provides to the computing device via the network, in response to the request, data for presentation to a user that indicates for each of the groups, at least one of how many of the one or more deliveries or non-deliveries were appropriate, or how many of the one or more deliveries or non-deliveries were inappropriate.Type: ApplicationFiled: July 15, 2010Publication date: January 19, 2012Applicant: Medtronic, Inc.Inventors: Hendrikus A. Westendorp, Cygni Chan, Amisha S. Patel, Denise Dirnberger, Jean K. Ringold, Kevin T. Ousdigian, Robert B. Trojan, Nelson H. Soken, Karen J. Kleckner
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Patent number: 7647122Abstract: A needle driver is described that can be used to drive a plurality of surgical needles into or proximate to tissue of a living body. The needle driver assists the surgeon in perforating the tissue, creating the tracts at a desired depth, and creating multiple tracts simultaneously. The needle driver is configured to hold the needles securely when creating the tracts, and is also configured to disengage from the needles after the tracts have been created.Type: GrantFiled: July 26, 2005Date of Patent: January 12, 2010Assignee: Medtronic, Inc.Inventors: Cygni Chan, Carl A. Schu, Orhan Soykan, Terrell M. Williams
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Publication number: 20070027512Abstract: A stimulation electrode array is described. The electrode array can include multiple electrode sets, and can be connected by a single lead to an implantable pulse generator. The implantable pulse generator can drive one set of electrodes to one potential, and another set to a different potential. When implanted in target tissue, the electrodes can stimulate the target tissue while avoiding stimulation of neighboring muscles, organs or nerves.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Applicant: Medtronic, Inc.Inventors: Cygni Chan, Carl Schu, Orhan Soykan, Terrell Williams
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Publication number: 20070023305Abstract: A needle driver is described that can be used to drive a plurality of surgical needles into or proximate to tissue of a living body. The needle driver assists the surgeon in perforating the tissue, creating the tracts at a desired depth, and creating multiple tracts simultaneously. The needle driver is configured to hold the needles securely when creating the tracts, and is also configured to disengage from the needles after the tracts have been created.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Applicant: Medtronic, Inc.Inventors: Cygni Chan, Carl Schu, Orhan Soykan, Terrell Williams
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Publication number: 20070027513Abstract: An electrode assembly is described that can be implanted in target tissue of a living body. The electrode assembly includes an introduction needle, a flexible leader coupled to the introduction needle, and an elongated electrode with fixation mechanisms on its proximal and distal ends. The introduction needle includes a visible marker that is a fixed distance from the pointed tip of the needle. This distance is approximately the same as the length of the electrode. During implantation, a surgeon penetrates the tissue with the introduction needle, thereby creating a tract in the tissue, and drives the needle in the tissue up to the marker, then perforates the tissue to cause the needle to emerge. This creates a tract that is approximately the same length as the electrode. The electrode can be pulled into the tract, where the fixation mechanisms resist migration from the tract.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Applicant: Medtronic, Inc.Inventors: Cygni Chan, Carl Schu, Orhan Soykan, Terrell Williams
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Publication number: 20060241709Abstract: In general, the invention is directed to methods and devices for determining an ion concentration in the extracellular fluid of a patient. As examples, the ion may be one or more of potassium, sodium, chloride, or calcium. A system includes an electrode deployed in or near a tissue, such as a skeletal muscle, of the patient. A pulse generator supplies one or more stimulations to the tissue, and a sensor, such as an accelerometer, detects the response of the tissue to the stimulations. A processor determines a concentration of ions in the extracellular fluid as a function of the response. The system may detect an ion imbalance based upon the determined concentration of ions.Type: ApplicationFiled: February 7, 2006Publication date: October 26, 2006Applicant: Medtronic, Inc.Inventors: Orhan Soykan, Timothy Robinson, James Carney, Tara Nahey, Cygni Chan