Patents Assigned to Cardiac Assist Technologies, Inc.
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Patent number: 6302899Abstract: A system for closing together a first side of a sternum and a second side of the sternum of a patient. The system includes a first grommet to be disposed in the first side. The system includes a second grommet adapted to be disposed in the second side. The system includes a mechanism for placing a grommet into the sternum. The placing mechanism is adapted to hold the grommet for placement in the sternum. The system includes a first wire suture for insertion through the first and second grommets. The system includes a stop mechanism for allowing the placing mechanism to place a grommet into the sternum only in a desired location of the patient and any other portion of the patient is protected from damage by the placing mechanism during operation. A grommet. An approximator. A drill stop mechanism. A placement tool. A method of threading a wire suture through a hole in a sternum. A method of bringing together a first side of a sternum and a second side of the sternum.Type: GrantFiled: March 31, 2000Date of Patent: October 16, 2001Assignee: Cardiac Assist Technologies, Inc.Inventors: Greg A. Johnson, Wayne P. Griffin, James A. Magovern, David W. Kletzli
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Patent number: 6221079Abstract: An apparatus for repairing a vessel in a patient. The apparatus includes a graft. The apparatus includes a mechanism for compressing the vessel to the graft and holding the vessel to the graft. A method of repairing a vessel of a patient. The method includes the steps of placing a first end of a graft in contact with a first side of the vessel. Then there is the step of placing a second side of the graft in contact with the second side of the vessel. Next there is the step of compressing the first side of the vessel against the first end. Then there is the step of compressing the second side of the vessel against the second end.Type: GrantFiled: August 31, 1999Date of Patent: April 24, 2001Assignee: Cardiac Assist Technologies, Inc.Inventors: James A. Magovern, Wayne P. Griffin, David W. Kletzli, Michael Szwerc, Dennis R. Trumble
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Patent number: 6135943Abstract: An apparatus for non-invasive flow indication through a rotary blood pump. The apparatus includes a blood pump adapted for implantation into a patient. The blood pump has a moving mechanism which contacts blood and imparts energy to the blood to move the blood in the patient at a desired flow rate. The apparatus includes a mechanism for causing the moving mechanism to move the blood. The causing mechanism is engaged with the moving mechanism. The causing mechanism receiving energy to power the causing mechanism. The apparatus comprises a sensorless flow indicator connected to the blood pump to identify the flow of blood through the pump based only on an energy balance between the energy imparted to the blood by the moving mechanism and the energy received by the causing mechanism. A method for determining blood flow in a patient. The method includes the steps of providing energy to a blood pump implanted in a patient to operate the pump.Type: GrantFiled: August 7, 1998Date of Patent: October 24, 2000Assignee: Cardiac Assist Technologies, Inc.Inventors: Yih-Choung Yu, Kirk A. Lehmann, John Chiasson, Wayne P. Griffin
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Patent number: 6080185Abstract: A system for closing together a first side of a sternum and a second side of the sternum of a patient. The system includes a first grommet to be disposed in the first side. The system includes a second grommet adapted to be disposed in the second side. The system includes a mechanism for placing a grommet into the sternum. The placing mechanism is adapted to hold the grommet for placement in the sternum. The system includes a first wire suture for insertion through the first and second grommets. The system includes a stop mechanism for allowing the placing mechanism to place a grommet into the sternum only in a desired location of the patient and any other portion of the patient is protected from damage by the placing mechanism during operation. A grommet. An approximator. A drill stop mechanism. A placement tool. A method of threading a wire suture through a hole in a sternum. A method of bringing together a first side of a sternum and a second side of the sternum.Type: GrantFiled: October 16, 1998Date of Patent: June 27, 2000Assignee: Cardiac Assist Technologies, Inc.Inventors: Greg A. Johnson, James A. Magovern, Eric LaWhite, Wayne P. Griffin
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Patent number: 6059818Abstract: A system for closing together a first side of a sternum and a second side of the sternum of a patient. The system includes a first grommet to be disposed in the first side. The system includes a second grommet adapted to be disposed in the second side. The system includes a mechanism for placing a grommet into the sternum. The placing mechanism is adapted to hold the grommet for placement in the sternum. The system includes a first wire suture for insertion through the first and second grommets. The system includes a stop mechanism for allowing the placing mechanism to place a grommet into the sternum only in a desired location of the patient and any other portion of the patient is protected from damage by the placing mechanism during operation. A grommet. An approximator. A drill stop mechanism. A placement tool. A method of threading a wire suture through a hole in a sternum. A method of bringing together a first side of a sternum and a second side of the sternum.Type: GrantFiled: October 16, 1998Date of Patent: May 9, 2000Assignee: Cardiac Assist Technologies, Inc.Inventors: Greg A. Johnson, Wayne P. Griffin, James A. Magovern, David W. Kletzli
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Patent number: 6045572Abstract: A system for closing together a first side of a sternum and a second side of the sternum of a patient. The system includes a first grommet to be disposed in the first side. The system includes a second grommet adapted to be disposed in the second side. The system includes a mechanism for placing a grommet into the sternum. The placing mechanism is adapted to hold the grommet for placement in the sternum. The system includes a first wire suture for insertion through the first and second grommets. The system includes a stop mechanism for allowing the placing mechanism to place a grommet into the sternum only in a desired location of the patient and any other portion of the patient is protected from damage by the placing mechanism during operation. A grommet. An approximator. A drill stop mechanism. A placement tool. A method of threading a wire suture through a hole in a sternum. A method of bringing together a first side of a sternum and a second side of the sternum.Type: GrantFiled: October 16, 1998Date of Patent: April 4, 2000Assignee: Cardiac Assist Technologies, Inc.Inventors: Greg A. Johnson, Wayne P. Griffin, James A. Magovern, David W. Kletzli
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Patent number: 6033429Abstract: A system and method for closing a first side of a severed bone with a second side of a severed bone of a patient. The system includes a first anchor mechanism which is adapted to enter into the first side of the bone and a second anchor mechanism which is adapted to anchor into the second side of the bone. The second anchor mechanism is separate and remote from the first anchor mechanism. The system also includes a lash that extends through the first and second anchor mechanisms and which binds the first side of the severed bone with the second side of the severed bone. Preferably, the lash comprises a wire made of stainless steel or suture material. A method for closing a first side of a severed bone with a second side of a severed bone.Type: GrantFiled: January 13, 1998Date of Patent: March 7, 2000Assignee: Cardiac Assist Technologies, Inc.Inventor: James A. Magovern
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Patent number: 5968053Abstract: The present invention pertains to an apparatus for implanting a graft into a vessel of a patient. The apparatus includes a mechanical delivery mechanism for delivering the graft to a desired location inside the vessel and then withdrawing from the vessel. The apparatus also has an anchoring mechanism for anchoring the graft to the interior surface of the vessel from the inside of the vessel. The anchoring mechanism is connected to the delivery mechanism. The present invention pertains to a method of implanting a graft in a vessel of a patient. The method includes the steps of delivering a graft to a desired location inside the vessel with a delivery mechanism. Next, there is the step of piercing the vessel from the interior of the vessel with anchors connected to the graft from inside the vessel. Then, there is the step of anchoring the anchors in the vessel to hold the graft in the vessel by changing the shape of the anchors.Type: GrantFiled: January 31, 1997Date of Patent: October 19, 1999Assignee: Cardiac Assist Technologies, Inc.Inventor: Demetrios Revelas