Ryan E Kaveckis

US Patent:

6290698, Sep 18, 2001

Filed:

Feb 24, 1999

Appl. No.:

9/256958

Inventors:

David E. Wentzel - Issaquah WA
Ryan Kaveckis - Seattle WA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 1818

US Classification:

606 34

Abstract:

Methods and devices for performing percutaneous myocardial revascularization without disrupting the blood pumping activity of the heart. A percutaneous myocardial revascularization system including an active electrode disposed at the end of a catheter and a radio frequency generator coupled to the active electrode for delivering radio frequency energy thereto. Radio frequency energy is selectively applied to the active electrode when the active electrode is properly positioned and when the heart is not in a vulnerable stage of the cardiac rhythm.

US Patent:

6394956, May 28, 2002

Filed:

Feb 29, 2000

Appl. No.:

09/514970

Inventors:

Chandru V. Chandrasekaran - Mercer Island WA
Zihong Guo - Bellevue WA
Anthony J. Pantages - Los Altos CA
Donald Masters - Sunnyvale CA
Ryan Kaveckis - Seattle WA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 800

US Classification:

600439, 600466, 607122

Abstract:

A combination catheter includes an ultrasound transducer and RF ablation electrode. The ultrasound transducer transmits ultrasound signals into and receives echo signals from a vessel. The echo signals are processed and used to produce an image of the tissue surrounding the catheter. A driveshaft rotates the ultrasound transducer to obtain a 360Â view of the vessel wall. At the distal end of the driveshaft is an electrode. An RF generator is electrically coupled to the driveshaft to deliver RF energy to the electrode at the distal end of the driveshaft to ablate occluding material in the vessel. The electrode may have a variety of tip shapes including concave, roughened, or expandable configurations, depending on the size of the vessel and composition of the occluding material to be ablated. Alternatively, the RF ablation energy may be delivered to a guidewire that is used to route the ultrasound catheter through a patients vasculature. Finally, a steerable catheter can be used to further position the ultrasound catheter and ablation electrode in the vessel.

US Patent:

6638222, Oct 28, 2003

Filed:

Feb 8, 2002

Appl. No.:

10/072064

Inventors:

Chandru V. Chandrasekaran - Mercer Island WA
Zihong Guo - Bellevue WA
Anthony J. Pantages - Los Altos CA
Donald Masters - Sunnyvale CA
Ryan Kaveckis - Seattle WA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 800

US Classification:

600439, 600466, 607122

Abstract:

A combination catheter includes an ultrasound transducer and RF ablation electrode. The ultrasound transducer transmits ultrasound signals into and receives echo signals from a vessel. The echo signals are processed and used to produce an image of the tissue surrounding the catheter. A driveshaft rotates the ultrasound transducer to obtain a 360Â view of the vessel wall. At the distal end of the driveshaft is an electrode. An RF generator is electrically coupled to the driveshaft to deliver RF energy to the electrode at the distal end of the driveshaft to ablate occluding material in the vessel. The electrode may have a variety of tip shapes including concave, roughened, or expandable configurations, depending on the size of the vessel and composition of the occluding material to be ablated.

US Patent:

6660003, Dec 9, 2003

Filed:

Apr 6, 2000

Appl. No.:

09/544348

Inventors:

Lauri DeVore - Seattle WA
Louis Ellis - St. Anthony MN
Gary L. Hendrickson - Big Lake MN
Daniel M. Lafontaine - Plymouth MN
Zihong Guo - Bellevue WA
Ryan Kaveckis - Seattle WA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 1814

US Classification:

606 45, 606 47, 606 48, 606170, 606186

Abstract:

An intravascular device and methods for forming multiple percutaneous myocardial revascularization (PMR) holes in a heart chamber wall simultaneously. One device includes a basket formed of flexible arms carrying cutting probes over their length. The basket arms are outwardly arcuately biased so as to assume an outwardly bowed, arcuate shape when unconstrained. The device includes an inner shaft distally secured to a proximal portion of the basket and slidably disposed within an outer shaft. The inner shaft and collapsed basket can be retracted within the outer shaft, delivered intravascularly to the left ventricle, and distally advanced, forcing the basket to assume the bowed shape. Radio frequency current supplied to the electrical cutting probes burn holes into the ventricle wall and myocardium. One embodiment has high pressure fluid jet cutting means. Another embodiment uses a basket as an anchor to position a steerable cutting probe.

US Patent:

8235986, Aug 7, 2012

Filed:

Oct 6, 2008

Appl. No.:

12/246358

Inventors:

Larry B. Kulesa - Bothell WA, US
Ryan E. Kaveckis - Everett WA, US
David C. Auth - Kirkland WA, US

Assignee:

CoAptus Medical Corporation - Redmond WA

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

Systems and methods for transeptal cardiac procedures are disclosed. A method for treating a patient in accordance with a particular embodiment includes positioning a tissue penetrating guidewire adjacent to a cardiac septum, directing pulses of energy to the guidewire, and advancing the guidewire into and through the septum by moving the guidewire in a distal direction in a series of discrete steps. Individual steps can be of a predetermined distance measured outside the patient's body. The method can further include passing a catheter over the guidewire after the guidewire has passed through the septum.

US Patent:

8308723, Nov 13, 2012

Filed:

Oct 9, 2009

Appl. No.:

12/576928

Inventors:

Larry B. Kulesa - Bothell WA, US
David C. Auth - Kirkland WA, US
Ryan E. Kaveckis - Everett WA, US

Assignee:

CoAptus Medical Corporation - Redmond WA

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

Tissue-penetrating guidewires with shaped tips, and associated systems and methods are disclosed. A patient treatment system in accordance with one embodiment of the disclosure includes a tissue-penetrating guidewire that in turn includes a flexible segment having a distal portion and a proximal portion. The flexible segment is elongated along an elongation axis. A penetrating member is positioned at the distal portion and includes at least one blade segment having a tapered outer peripheral surface and an adjacent generally sharp edge. The blade segment extends to a distal end of the penetrating member to form a generally blunt tip. In operation, the guidewire can be connected to an electrical current source to deliver high frequency current to the penetrating member.

US Patent:

20070093804, Apr 26, 2007

Filed:

Oct 16, 2006

Appl. No.:

11/581848

Inventors:

Ryan Kaveckis - Everett WA, US
Mark Tempel - Sammamish WA, US
Christopher Genau - Seattle WA, US

Assignee:

CoAptus Medical Corporation - Redmond WA

International Classification:

A61B 18/14

US Classification:

606041000, 606049000

Abstract:

Control systems for patient devices, including devices for securing cardiovascular tissue, and associated methods, are disclosed. A system in accordance with one embodiment includes a controller coupleable to an energy transmitter configured to be introduced into a patient's body. The controller can have a power delivery component that is configured to automatically deliver and automatically terminate a full dose of energy to the energy transmitter at only a single predetermined energy level that is not user changeable. The controller can further include an activation device coupled to the power delivery component to initiate delivery of the energy.

US Patent:

20070093805, Apr 26, 2007

Filed:

Oct 16, 2006

Appl. No.:

11/582210

Inventors:

David Auth - Kirkland WA, US
Christopher Genau - Seattle WA, US
Joseph Eichinger - Everett WA, US
Mark Tempel - Sammamish WA, US
Ryan Kaveckis - Everett WA, US
William Gray - New York NY, US
Blair Erbstoeszer - Kirkland WA, US

Assignee:

CoAptus Medical Corporation - Redmond WA

International Classification:

A61B 18/14

US Classification:

606041000, 606049000

Abstract:

Systems and methods for securing cardiovascular tissue, including via asymmetric electrodes, are disclosed. A device in accordance with one embodiment includes a catheter having a proximal end and a distal end, with a working portion positioned toward the distal end and being elongated along a terminal axis. The device can further include an energy transmitter (e.g., an electrode) at the working portion of the catheter, with the energy transmitter tapered inwardly toward the terminal axis in a distal direction. The energy transmitter can be asymmetric relative to the terminal axis. In further particular embodiments, other components of the catheter (e.g., an inflatable member, guidewire conduit, and/or catheter bend angle) can also be asymmetric relative to the terminal axis, and in still further particular embodiments, some or all of the foregoing elements can have particular alignments relative to each other.