Carla Christine Pfeiffer, 541510 Onondaga St NE, Fridley, MN 55432

8041434, Oct 18, 2011

Mar 27, 2009

12/413176

William J. Clemens - Fridley MN, US
Nicole L. Werner - Cleveland Heights OH, US
Deborah A. Loch - Saint Paul MN, US
Douglas Stephen Hine - Forest Lake MN, US
Douglas N. Hess - Maple Grove MN, US
Carla C. Pfeiffer - Anoka MN, US

Medtronic, Inc. - Minneapolis MN

A61N 1/00

607122

A distal section of an implantable medical electrical lead body includes a pair of pre-formed arcuate segments between which an approximately straight segment extends. The approximately straight segment includes a first portion extending distally from a first of the pair pre-formed arcuate segments, a second portion extending from the first portion, a third portion extending from the second to a second of the pair pre-formed arcuate segments. An electrode is coupled to the second portion of the approximately straight segment, and the adjacent first portion has a stiffness which is less than that of the first of the pair pre-formed arcuate segments and preferably less than the stiffness of the third portion, so that, when the distal section of the lead body is implanted, for example, within a cardiac vein, the lead buckles to bring the electrode into closer contact with surrounding tissue.

2004006, Apr 1, 2004

Sep 27, 2002

10/256353

Douglas Hine - White Bear Lake MN, US
John Sommer - Coon Rapids MN, US
Wayne Bass - Coon Rapids MN, US
Mary Morris - Mounds View MN, US
Peter McIntyre - Mounds View MN, US
Carla Pfeiffer - Anoka MN, US
Roger Lafond - Fridley MN, US
Patricia Peterson - Centuria MN, US

A61N001/05

607/122000

A bipolar cardiac vein lead and method of assembly is provided wherein the lead includes a flexible coil anode electrode such that the lead may be advanced through a tortuous pathway. The coil electrode is coupled to a conductor using a method of assembly that minimizes or eliminates rigid components, maintaining flexibility of the distal lead end. Multi-polar cardiac vein leads may include multiple flexible coil electrodes to achieve pacing and/or sensing in the left atrium and the left ventricle or at multiple left heart sites.

2022031, Oct 6, 2022

Jun 21, 2022

17/808026

- Minneapolis MN, US
Vania Lee - Circle Pines MN, US
Linda L. Franke - Blaine MN, US
Lonnie D. Ronning - Coon Rapids MN, US
Dina L. Williams - Andover MN, US
Michael D. Eggen - Chisago City MN, US
Carla C. Pfeiffer - Fridley MN, US

A61B 17/34
A61N 1/362
A61N 1/375

A tethering assembly for securing a medical device includes a shaft and a wire that extends in sliding engagement within a proximal lumen, a channel, and a distal receptacle of the shaft. A retainer zone of the shaft, through which the channel extends, stops a transition segment of the wire, which extends between a proximal and a distal segment of the wire, from moving into the shaft receptacle, thereby restraining a distal-most tip of the wire from moving through a distal-most opening of the receptacle. When a projecting member of the device has entered a secure zone of the receptacle, via movement through the distal-most opening and a tapering passageway thereof, the distal-most tip of the wire, which may be spring-biased, can move distally into the passageway so that the tip blocks the projecting member from moving distally, back through the passageway.

2022018, Jun 16, 2022

Dec 20, 2021

17/645237

- Minneapolis MN, US
Matthew D. Bonner - Plymouth MN, US
Trent M. Fischer - St. Paul MN, US
Carla C. Pfeiffer - Anoka MN, US
Brian P. Colin - Anoka MN, US
Lester O. Stener - Hudson WI, US

A61M 25/09
A61M 25/01

The present disclosure is directed to a shuttle apparatus for detachably joining a catheter to a guidewire so that the joined catheter, extending alongside the guidewire, is in sliding engagement with the guidewire without extending around the guidewire. The apparatus comprises a collar member sized for mounting in sliding engagement around a length of the guidewire, the collar member having a longitudinal axis that approximately aligns along the length, when mounted thereabout, the length being defined between a proximal-most point of the guidewire and a distal point of the guidewire, the distal point being offset proximally from a distal-most point of the guidewire. The apparatus further comprises a plug member coupled to the collar member, the plug member having a longitudinal axis, and the plug member being sized to fit within an opening of the catheter for detachable engagement therewith.

2019012, May 2, 2019

Oct 26, 2018

16/171607

- Minneapolis MN, US
Kenneth C. Gardeski - Plymouth MN, US
Carla Pfeiffer - Anoka MN, US
Kevin R. Seifert - Forest Lake MN, US
Lester O. Stener - Hudson WI, US
Matthew D. Bonner - Plymouth MN, US

A61N 1/05
A61N 1/368
A61N 1/375
A61N 1/372

Methods and systems for positioning a leadless pacing device (LPD) in cardiac tissue are disclosed. A delivery device is employed that comprises a proximal end, a distal end and a lumen therebetween sized to receive the LPD. The LPD has a leadlet extending therefrom that includes a means to fixate the leadlet to tissue. The delivery device comprises an introducer to introduce the LPD into the lumen of the delivery device. The LPD is loaded in the distal end of the lumen of the delivery device. The leadlet extends proximally from the LPD while the fixation means extends distally toward the LPD. A LPD mover is configured to advance the LPD out of the delivery device. A leadlet mover is configured to advance the leadlet out of the lumen delivery device and cause the leadlet to engage with cardiac tissue.

2018028, Oct 4, 2018

Mar 29, 2018

15/940259

- Minneapolis MN, US
Vania LEE - Circle Pines MN, US
Linda L. FRANKE - Blaine MN, US
Lonnie D. RONNING - Coon Rapids MN, US
Dina L. WILLIAMS - Andover MN, US
Michael D. EGGEN - Chisago City MN, US
Carla C. PFEIFFER - Anoka MN, US

A61B 17/34
A61N 1/362
A61N 1/375

A tethering assembly for securing a medical device includes a shaft and a wire that extends in sliding engagement within a proximal lumen, a channel, and a distal receptacle of the shaft. A retainer zone of the shaft, through which the channel extends, stops a transition segment of the wire, which extends between a proximal and a distal segment of the wire, from moving into the shaft receptacle, thereby restraining a distal-most tip of the wire from moving through a distal-most opening of the receptacle. When a projecting member of the device has entered a secure zone of the receptacle, via movement through the distal-most opening and a tapering passageway thereof, the distal-most tip of the wire, which may be spring-biased, can move distally into the passageway so that the tip blocks the projecting member from moving distally, back through the passageway.

2018020, Jul 19, 2018

Jan 17, 2018

15/873153

- Minneapolis MN, US
Matthew D. Bonner - Plymouth MN, US
Trent M. Fischer - St. Paul MN, US
Carla Pfeiffer - Anoka MN, US
Brian P. Colin - Shakopee MN, US
Lester O. Stener - Hudson WI, US

A61M 25/09
A61M 25/01

The present disclosure is directed to a shuttle apparatus for detachably joining a catheter to a guidewire so that the joined catheter, extending alongside the guidewire, is in sliding engagement with the guidewire without extending around the guidewire. The apparatus comprises a collar member sized for mounting in sliding engagement around a length of the guidewire, the collar member having a longitudinal axis that approximately aligns along the length, when mounted thereabout, the length being defined between a proximal-most point of the guidewire and a distal point of the guidewire, the distal point being offset proximally from a distal-most point of the guidewire. The apparatus further comprises a plug member coupled to the collar member, the plug member having a longitudinal axis, and the plug member being sized to fit within an opening of the catheter for detachable engagement therewith.

2017020, Jul 27, 2017

Jan 26, 2017

15/416282

- Minneapolis MN, US
Kenneth C Gardeski - Plymouth MN, US
Carla Pfeiffer - Anoka MN, US
Kevin R Seifert - Forest Lake MN, US
Lester O Stener - Hudson WI, US
Matthew D Bonner - Plymouth MN, US

A61N 1/05
A61N 1/368
A61N 1/372

Methods and systems for positioning a leadless pacing device (LPD) in cardiac tissue are disclosed. A delivery device is employed that comprises a proximal end, a distal end and a lumen therebetween sized to receive the LPD. The LPD has a leadlet extending therefrom that includes a means to fixate the leadlet to tissue. The delivery device comprises an introducer to introduce the LPD into the lumen of the delivery device. The LPD is loaded in the distal end of the lumen of the delivery device. The leadlet extends proximally from the LPD while the fixation means extends distally toward the LPD. A LPD mover is configured to advance the LPD out of the delivery device. A leadlet mover is configured to advance the leadlet out of the lumen delivery device and cause the leadlet to engage with cardiac tissue.