Patents by Inventor Tessy Kanayinkal
Tessy Kanayinkal 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: 11275076Abstract: A method carried out by a system configured to analyze blood. The method includes causing a ferromagnetic object to move in a chamber housing blood after clot initiation has been implicated. Movement of the object in the chamber is detected. The detected movement of the object is correlated with clot retraction of the blood. In some embodiments, the stop of detecting movement includes allowing the object to drop from a raised position and detecting a drop distance of the object. In related embodiments, the step of correlating detected movement with clot retraction includes reviewing a trace generated by a plurality of drop distances over time. In yet other embodiments, methods of the present disclosure can further including evaluating platelet function of the blood based upon assessed clot retraction.Type: GrantFiled: December 19, 2016Date of Patent: March 15, 2022Assignee: Medtronic, Inc.Inventors: Charlene Yuan, Trevor Huang, Tessy Kanayinkal
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Publication number: 20210318308Abstract: A method carried out by a system configured to analyze platelet aggregation includes retaining a ferromagnetic object at an elevation of a chamber in which a sample of blood or plasma is disposed. The ferromagnetic object is retained at the elevation for a period of time. The ferromagnetic object is then released from the elevation. The ferromagnetic object minimal position is measured following the release of the ferromagnetic object. The object minimal position may be correlated with amount of platelet aggregation in the sample.Type: ApplicationFiled: March 16, 2021Publication date: October 14, 2021Inventors: Charlene Yuan, Trevor Huang, Tessy Kanayinkal
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Publication number: 20210199642Abstract: Systems and methods to analyze blood or other fluid sample. The systems and methods utilize bi-directional magnetic forces to push or pull a magnetic object along a post in a chamber housing the fluid sample both before and after clot initiation has been implicated. The magnetic object can be threadably connected to the post. In other embodiments, the chamber is configured such that the magnetic object does not rotate but only slides along the post. Once a clot has been detected, the washer can be moved either up or down to apply either compressive force or strain within the clot, as desired, to evaluate elastic properties or firmness of the clot.Type: ApplicationFiled: March 17, 2021Publication date: July 1, 2021Applicant: Medtronic Vascular, Inc.Inventors: Trevor Huang, Charlene Yuan, Tessy Kanayinkal
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Patent number: 10983107Abstract: Systems and methods to analyze blood or other fluid sample. The systems and methods utilize bi-directional magnetic forces to push or pull a magnetic object along a post in a chamber housing the fluid sample both before and after clot initiation has been implicated. The magnetic object can be threadably connected to the post. In other embodiments, the chamber is configured such that the magnetic object does not rotate but only slides along the post. Once a clot has been detected, the washer can be moved either up or down to apply either compressive force or strain within the clot, as desired, to evaluate elastic properties or firmness of the clot.Type: GrantFiled: August 23, 2018Date of Patent: April 20, 2021Assignee: Medtronic Vascular, Inc.Inventors: Trevor Huang, Charlene Yuan, Tessy Kanayinkal
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Patent number: 10371694Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.Type: GrantFiled: April 21, 2016Date of Patent: August 6, 2019Assignee: MEDTRONIC, INC.Inventors: Daniel Cheek, Lawrence Erickson, Trevor Huang, Tessy Kanayinkal, Craig Petersen, Charlene Yuan
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Publication number: 20190064142Abstract: Systems and methods to analyze blood or other fluid sample. The systems and methods utilize bi-directional magnetic forces to push or pull a magnetic object along a post in a chamber housing the fluid sample both before and after clot initiation has been implicated. The magnetic object can be threadably connected to the post. In other embodiments, the chamber is configured such that the magnetic object does not rotate but only slides along the post. Once a clot has been detected, the washer can be moved either up or down to apply either compressive force or strain within the clot, as desired, to evaluate elastic properties or firmness of the clot.Type: ApplicationFiled: August 23, 2018Publication date: February 28, 2019Applicant: Medtronic Vascular, Inc.Inventors: Trevor Huang, Charlene Yuan, Tessy Kanayinkal
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Publication number: 20180172665Abstract: A method carried out by a system configured to analyze blood. The method includes causing a ferromagnetic object to move in a chamber housing blood after clot initiation has been implicated. Movement of the object in the chamber is detected. The detected movement of the object is correlated with clot retraction of the blood. In some embodiments, the stop of detecting movement includes allowing the object to drop from a raised position and detecting a drop distance of the object. In related embodiments, the step of correlating detected movement with clot retraction includes reviewing a trace generated by a plurality of drop distances over time. In yet other embodiments, methods of the present disclosure can further including evaluating platelet function of the blood based upon assessed clot retraction.Type: ApplicationFiled: December 19, 2016Publication date: June 21, 2018Inventors: Charlene Yuan, Trevor Huang, Tessy Kanayinkal
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Patent number: 9429563Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.Type: GrantFiled: December 6, 2012Date of Patent: August 30, 2016Assignee: Medtronic, Inc.Inventors: Daniel Cheek, Lawrence Erickson, Trevor Huang, Tessy Kanayinkal, Craig Petersen, Charlene Yuan
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Publication number: 20160238621Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.Type: ApplicationFiled: April 21, 2016Publication date: August 18, 2016Inventors: Daniel Cheek, Lawrence Erickson, Trevor Huang, Tessy Kanayinkal, Craig Petersen, Charlene Yuan
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Patent number: 9096839Abstract: The present invention provides biological compositions and methods for making the same.Type: GrantFiled: April 26, 2007Date of Patent: August 4, 2015Assignee: Arteriocyte Medical Systems, Inc.Inventors: Tessy Kanayinkal, Laura A. Yonce, Debra Mullins-Hirte, Trevor C. Huang, Rohit Cariappa, Kenneth E. Merte, James R. Keogh, Kevin D. McIntosh, Brian J. Steffens, Asha S. Nayak, Erick L. Johnson
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Patent number: 8968391Abstract: Methods for ameliorating stent graft migration and endoleak using treatment site-specific cell growth promoting compositions in combination with stent grafts are disclosed. Also disclosed are application of cell growth promoting compositions such as, but not limited to, autologous platelet gel compositions directly to treatment sites during or after stent graft implantation.Type: GrantFiled: March 13, 2007Date of Patent: March 3, 2015Assignee: Medtronic Vascular, Inc.Inventors: Dennis Brooks, Jack Chu, Scott Doig, Trevor Huang, Tessy Kanayinkal
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Patent number: 8926635Abstract: A novel occluder application and clip device for treatment of embolic stroke caused by atrial fibrillation uses multiple sutures in a non directional handle to affix the occlusion device to the applicator and manipulate the occluder from an open and receiving position to a closed and occluding position. The occluder is retained in place by a clamping means related to locks retainers, resilient material or otherwise. An actuator mechanism is used to manipulate the occluder to a locked or occluding position. The applicator with the occluder attached has a low profile and remote manipulations to allow the occluder to be delivered to the clamping location within a patient through a small incision or delivery port such as a trocar cannula or the like.Type: GrantFiled: October 2, 2009Date of Patent: January 6, 2015Assignee: Medtronic, Inc.Inventors: David E. Francischelli, Roderick E. Briscoe, Leonard H. Leuer, Daniel C. Haeg, Tom P. Daigle, David Kim, Mark T. Stewart, Andrew L. Olson, Patrick J. Cloutier, Christopher W. Smith, Michael J. Hobday, Tessy Kanayinkal, Douglas H. Gubbin, Paul T. Rothstein, Joseph E. Cardinal, Jessica L. Foley, Christopher J. Plott
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Publication number: 20140273249Abstract: High range activated clotting time (HR-ACT) tests detect blood clotting time in blood samples which have high levels of heparin. Reagents such as calcium chloride and kaolin within the test apparatus trigger clotting. The cartridge is treated with a strong surface treatment process, such as an atmospheric plasma treatment, to increase the hydrophilic property of the test chamber, there may be a significant reduction in the kaolin concentration required to activate the blood sample and initiate the coagulation process. The kaolin concentration may be further reduced if the buffer component used in the buffer saline contains phosphate. The reduction of the kaolin concentration allows more calcium to be released from the kaolin to participate in the clotting process. The combined effect of adding a surface treatment to the cartridge to increase the hydrophilic property of reaction chamber and adding phosphate into buffered saline allows for clot detection of blood samples containing 5˜6 U/mL heparin.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: MEDTRONIC, INC.Inventors: Charlene Yuan, Trevor C. Huang, Tessy Kanayinkal, Mary Jo Passenheim, Craig D. Petersen, Ivan Akunovich
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Patent number: 8663245Abstract: The invention provides a system for occluding a left atrial appendage of a patient. The system can include a ring occluder that can be positioned around the left atrial appendage and a ring applicator to position the ring occluder with respect to the left atrial appendage. The system can also provide a tissue-grasping tool that is separable from the ring applicator tool.Type: GrantFiled: April 19, 2007Date of Patent: March 4, 2014Assignee: Medtronic, Inc.Inventors: David E. Francischelli, Roderick E. Briscoe, Leonard H. Leuer, Daniel C. Haeg, Tom P. Daigle, David Kim, Mark T. Stewart, Andrew L. Olson, Patrick J. Cloutier, Christopher W. Smith, Michael J. Hobday, Tessy Kanayinkal, Douglas H. Gubbin, Paul T. Rothstein, Joseph E. Cardinal, Jessica L. Foley, Christopher J. Plott
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Publication number: 20100145361Abstract: A novel occluder application and clip device for treatment of embolic stroke caused by atrial fibrillation uses multiple sutures in a non directional handle to affix the occlusion device to the applicator and manipulate the occluder from an open and receiving position to a closed and occluding position. The occluder is retained in place by a clamping means related to locks retainers, resilient material or otherwise. An actuator mechanism is used to manipulate the occluder to a locked or occluding position. The applicator with the occluder attached has a low profile and remote manipulations to allow the occluder to be delivered to the clamping location within a patient through a small incision or delivery port such as a trocar cannula or the like.Type: ApplicationFiled: October 2, 2009Publication date: June 10, 2010Inventors: David E. Francischelli, Roderick E. Briscoe, Leonard H. Leuer, Daniel C. Haeg, Tom P. Daigle, David Kim, Mark T. Stewart, Andrew L. Olson, Patrick J. Cloutier, Christopher W. Smith, Michael J. Hobday, Tessy Kanayinkal, Douglas H. Gubbin, Paul T. Rothstein, Joseph E. Cardinal, Jessica L. Foley, Christopher J. Plott
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Publication number: 20080044852Abstract: The present invention provides biological compositions and methods for making the same.Type: ApplicationFiled: April 26, 2007Publication date: February 21, 2008Inventors: Tessy Kanayinkal, Laura Yonce, Debra Mullins-Hirte, Trevor Huang, Rohit Cariappa, Kenneth Merte, James Keogh, Kevin McIntosh, Brian Steffens, Asha Nayak, Erick Johnson
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Publication number: 20080033457Abstract: Some embodiments of the invention provide a system for occluding a left atrial appendage of a patient. Some embodiments of the system can include a ring occluder that can be positioned around the left atrial appendage and a ring applicator to position the ring occluder with respect to the left atrial appendage. One embodiment discloses a method of accessing endocardial surfaces of the heart through the atrial appendage. Additional embodiments of the invention provide a clip occluder that can be positioned around the left atrial appendage. A clip applicator can position the clip occluder with respect to the left atrial appendage.Type: ApplicationFiled: April 19, 2007Publication date: February 7, 2008Inventors: David Francischelli, Roderick Briscoe, Leonard Leuer, Daniel Haeg, Tom Daigle, David Kim, Mark Stewart, Andrew Olson, Patrick Cloutier, Christopher Smith, Michael Hobday, Tessy Kanayinkal, Douglas Gubbin, Paul Rothstein, Joseph Cardinal, Jessica Foley, Christopher Plott
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Publication number: 20070202093Abstract: Methods for ameliorating stent graft migration and endoleak using treatment site-specific cell growth promoting compositions in combination with stent grafts are disclosed. Also disclosed are application of cell growth promoting compositions such as, but not limited to, autologous platelet gel compositions directly to treatment sites during or after stent graft implantation.Type: ApplicationFiled: March 13, 2007Publication date: August 30, 2007Applicant: Medtronic Vascular, Inc.Inventors: Dennis Brooks, Jack Chu, Scott Doig, Trevor Huang, Tessy Kanayinkal