Erik C Griswold

US Patent:

7356903, Apr 15, 2008

Filed:

Jul 30, 2004

Appl. No.:

10/903757

Inventors:

Mike Krivoruchko - Forestville CA, US
William Berthiaume - Santa Rosa CA, US
Don Tran - Windsor CA, US
Kris Kristoffersen - Santa Rosa CA, US
Erik Griswold - Santa Rosa CA, US
Vance Swanson - Santa Rosa CA, US
Somboune Singkeo - Santa Rosa CA, US
Fertac Bilge - Santa Rosa CA, US
Sean Miller - Santa Rosa CA, US

Assignee:

Medtronic Vascular, Inc. - Sanata Rosa CA

International Classification:

B23P 11/02
B21D 39/00
B25B 27/14
A61F 2/06

US Classification:

29446, 29451, 29505, 29272, 29515, 623 111, 623 115

Abstract:

The present invention is a device for delivering a self-expanding stent. The device has an inner shaft and an outer shaft moveable with respect to the inner shaft. The self expanding stent is received on the inner shaft adjacent its distal end. A tapered tip is located on the inner shaft distal end and it forms a smooth transition from the delivery device to the guide wire extending therethrough. A handle allows the practitioner to deploy the stent single handedly. The stent may have its segments in a first radial configuration for deliver of the stent or the stent may have a plurality of segments in a first radial configuration and a plurality of second segments in a second radial position.

US Patent:

8226705, Jul 24, 2012

Filed:

Jan 26, 2010

Appl. No.:

12/693571

Inventors:

Erik Griswold - Penngrove CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

A61F 2/82

US Classification:

623 122, 623 115

Abstract:

A method of manufacturing a stent includes forming a wave form having a plurality of struts and a plurality of crowns. Each crown connects two adjacent struts. The wave form has a center and two portions extending from opposite sides of the center. The method includes wrapping a first portion of the wave form about a longitudinal axis in a first direction at a first pitch angle, starting at the center of the wave form, to define at least one turn oriented at the first pitch angle, and wrapping a second portion of the wave form about the longitudinal axis in a second direction that is opposite the first direction at a second pitch angle, starting at the center of the wave form, to define at least one turn oriented at the second pitch angle. The first pitch angle is opposite the second pitch angle.

US Patent:

8328072, Dec 11, 2012

Filed:

Jul 19, 2010

Appl. No.:

12/838778

Inventors:

Justin Goshgarian - Santa Rosa CA, US
Erik Griswold - Penngrove CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

B23K 31/02
B21D 28/00

US Classification:

228101, 228145, 228170, 72326, 72338

Abstract:

A method for forming a wave form for a stent. The wave form includes a plurality of substantially straight portions and a plurality of curved portions. Each curved portion connects adjacent substantially straight portions. The method includes feeding a formable material between a first die and a second die, the first die having a protruding surface in the shape of the wave form, and the second die having a recessed surface in the shape of the wave form complementing the protruding surface of the first die, pressing the formable material with the protruding surface of the first die into contact with the recessed surface of the second die, and shearing the wave form from the formable material with shearing forces created by the pressing.

US Patent:

8401643, Mar 19, 2013

Filed:

May 17, 2011

Appl. No.:

13/109426

Inventors:

Erik Griswold - Penngrove CA, US
James Calvin Allan - Santa Rosa CA, US
Rudy Beasley - Rohnert Park CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

A61B 19/00

US Classification:

607 23, 606191, 606200, 128898

Abstract:

A medical device adapted to be implanted in a vessel of a human body includes a housing that contains a diagnostic or therapeutic module and an anchor for supporting the housing in an intended location and orientation within the vessel. The anchor is expandable from a low profile configuration adapted for delivery to an expanded configuration for engagement with the vessel wall. The anchor and a delivery catheter are adapted to enable the medical device to be retrieved and repositioned or removed from the vessel. The anchor is adapted to apply sufficient force against the vessel wall to maintain the anchor in place but less force than that required to provide scaffolding support for the vessel.

US Patent:

8412352, Apr 2, 2013

Filed:

Mar 15, 2011

Appl. No.:

13/047846

Inventors:

Erik C. Griswold - Penngrove CA, US
James Calvin Allan - Santa Rosa CA, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/05

US Classification:

607126

Abstract:

This disclosure is directed to an implantable medical device having a housing that encloses at least a communication module. The implantable medical device also includes a first electrode electrically coupled to the communication module and an electrically conductive fixation mechanism that is mechanically coupled to the housing and electrically coupled to the communication module within the housing. The electrically conductive fixation mechanism includes a dielectric material that covers part of a surface of the fixation mechanism. A portion of the electrically conductive fixation mechanism is not covered by the dielectric material such that the portion of the electrically conductive fixation mechanism is exposed to form a second electrode that is electrically coupled to the communication module. The communication module is configured to communicate using the first electrode and second electrode.

US Patent:

8465436, Jun 18, 2013

Filed:

Apr 27, 2010

Appl. No.:

12/768235

Inventors:

Erik Griswold - Penngrove CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

A61B 5/021
A61F 2/90
A61F 2/82
A61F 2/88

US Classification:

600486, 600481, 600485, 606108, 606200, 623 111, 623 112, 623 113, 623 114, 623 115, 623 116, 623 117, 623 12, 623 121, 623 122, 623 123, 623 136

Abstract:

An implant centering system includes a sensor connected to a hollow cylindrical anchor via at least two struts. The hollow cylindrical anchor is transformable between a radially compressed configuration for delivery and a radially expanded configuration for lodging against a vessel wall. The struts longitudinally relocate the sensor between a first position in which the sensor is longitudinally spaced apart from the radially compressed anchor, and a second position in which the sensor is at least partially within a lumen of the radially expanded anchor and radially centered within vessel. In one embodiment, the struts are heat-set into a curved configuration and an externally applied force longitudinally relocates the sensor until the struts lock over center into their heat-set configuration. In another embodiment, radial expansion of the anchor longitudinally relocates the sensor without an externally applied force.

US Patent:

8475372, Jul 2, 2013

Filed:

Apr 20, 2011

Appl. No.:

13/090854

Inventors:

Jon D. Schell - Shoreview MN, US
George Patras - Greenfield MN, US
Kamal Deep Mothilal - Minneapolis MN, US
Erik Griswold - Penngrove CA, US
James Calvin Allan - Santa Rosa CA, US
Albert Dunfee - Byfield MA, US
Rudy Beasley - Rohnert Park CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

A61B 5/145

US Classification:

600309, 600483, 600486, 607116, 623 11, 623 115

Abstract:

An implantable medical device, such as a sensor for monitoring a selected internally detectable physiological parameter of a patient, is attached to a fixation member that is deployable within the patient to position and orient the sensor to enable it to perform its function. The fixation member may be configured to lie in a single plane when deployed or may be tubular in shape. The attachment of the housing and fixation member includes providing the fixation member with a linear attachment strut that is non-circular in cross section and providing the housing with external members that define an elongate channel, non-circular in cross section and receptive to the attachment strut. The attachment strut can be inserted transversely into the channel and the external member can be crimped over the strut to secure the housing and fixation member together.

US Patent:

8478431, Jul 2, 2013

Filed:

Mar 14, 2011

Appl. No.:

13/047456

Inventors:

Erik Griswold - Mill Valley CA, US
James Calvin Allan - Santa Rosa CA, US
Don Tran - Novato CA, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607128

Abstract:

A fixation device for retaining a leadless medical implant to tissue includes an array of elongate tines having self-expanding distal portions. The fixation tines may be advanced between an implant body and an outer jacket to deploy the tines from a delivery configuration in which the tines are constrained by the outer jacket to an expanded configuration in which the distal end portions of the tines are released from the outer jacket. The implant and fixation device are contained within a sheath for delivery to the treatment site and a pusher within the sheath advances the fixation device relative to the implant body and deploys the tines. A distal end of the implant having an electrode may form a distal tip of the delivery system, and a potential implantation site may be tested prior to deployment of the fixation device to allow for easy repositioning of the implant.