公开(公告)号：US09750931B2

公开(公告)日：2017-09-05

申请号：US14620904

申请日：2015-02-12

Applicant: Medtronic, Inc.

Inventor： Rónán Wood ,  Sean Ward ,  James M Keaveney

IPC: A61N1/00 ,  A61N1/05 ,  A61B17/34 ,  A61N1/372 ,  A61N1/362 ,  A61N1/375

CPC classification number: A61N1/0573 ,  A61B17/3468 ,  A61N1/362 ,  A61N1/372 ,  A61N1/37205 ,  A61N1/3756 ,  A61N2001/058

Abstract: A system for delivering an implantable medical device includes a loading assembly and a catheter. The loading assembly includes a deployment member and a sidewall defining a chamber into which the device may be pulled through a distal opening thereof, so that the sidewall holds fingers of the device's fixation member in an extended condition while a temperature in the chamber is lowered. When the chamber is connected to the catheter, advancing the deployment member pushes the device, with fixation fingers in the extended condition, into a delivery lumen of the catheter. With the catheter positioned within a patient, the device can be pushed into a distal portion of the catheter while a relatively cold fluid is infused through the delivery lumen. While holding the deployment member in place, retracting the catheter exposes the device fixation fingers out from the lumen, for engagement with tissue at the implant site.

公开(公告)号：US10143823B2

公开(公告)日：2018-12-04

申请号：US15142009

申请日：2016-04-29

Applicant: Medtronic, Inc.

Inventor： James M Keaveney ,  Jeffrey Madden ,  John Gallagher

IPC: A61M25/00 ,  A61M25/01 ,  A61N1/362 ,  A61N1/372

Abstract: A system includes a delivery catheter and a separately-packaged implantable medical device assembly. The assembly includes a relatively compact implantable medical device, a support shaft, a tether, and a snare mandrel. The tether, which extends in the support shaft, has a distal portion coupled to the device, at a distal end of the support shaft, and a proximal portion protruding from a proximal end of the support shaft, for engagement by a hook of the snare mandrel. An operator may use the engaged snare mandrel to pull the support shaft into a lumen of an inner shaft of the catheter so that the coupled device comes into engagement with a flared end of the catheter inner shaft. Then, after locking the proximal portion of the tether within the catheter, the operator may advance a receptacle of the catheter over the device.

公开(公告)号：US20170312479A1

公开(公告)日：2017-11-02

申请号：US15142009

申请日：2016-04-29

Applicant: Medtronic, Inc.

Inventor： James M Keaveney ,  Jeffrey Madden ,  John Gallagher

IPC: A61M25/00 ,  A61N1/362 ,  A61N1/372 ,  A61M25/01

CPC classification number: A61M25/0082 ,  A61M25/0074 ,  A61M25/0147 ,  A61M2025/0004 ,  A61M2025/0096 ,  A61N1/362 ,  A61N1/372 ,  A61N1/37205

Abstract: A system includes a delivery catheter and a separately-packaged implantable medical device assembly. The assembly includes a relatively compact implantable medical device, a support shaft, a tether, and a snare mandrel. The tether, which extends in the support shaft, has a distal portion coupled to the device, at a distal end of the support shaft, and a proximal portion protruding from a proximal end of the support shaft, for engagement by a hook of the snare mandrel. An operator may use the engaged snare mandrel to pull the support shaft into a lumen of an inner shaft of the catheter so that the coupled device comes into engagement with a flared end of the catheter inner shaft. Then, after locking the proximal portion of the tether within the catheter, the operator may advance a receptacle of the catheter over the device.