Medtronic, Inc.

Pierce Vatterott

H Toby Markowitz

Ronald A Drake

Kenneth C Gardeski

Kevin R Seifert

John Charles Stroebel

Brian P Colin

Colin William Meade

Paula McDonnell

Rónán Wood

Michael B Shelton

Francis Denis McEvoy

Carleen J Juran

Kealan E O'Carroll

Harry A Strandquist

Kristin Yakimow

Paula Mcdonnell

Kealan E O'CARROLL

Colin W Meade

Francis D Mcevoy

An improved assembly for securing an implantable medical device for retrieval from an implant site includes a plurality of snares, wherein distal openings of a first snare carrier lumen and a second snare carrier lumen have a pre-set offset established therebetween. First and second snare shafts, to which first and second snare loops are coupled, respectively, extend within the corresponding snare carrier lumens such that each loop is located in proximity to the corresponding distal opening of the lumen. The pre-set offset allows an operator to simultaneously position the snare loops around the device; and, when the operator retracts the snare shafts to collapse the snare loops until the loops fit snuggly around the device, the pre-set offset can help to align the device for retrieval.

Medical device retrieval with multiple snares

An automatic, body-implantable medical device having at least two modes of operation is disclosed. The device is provided with circuitry for automatically detecting when the device has been implanted in a patient, so that the device can automatically switch from a first mode to a second mode of operation upon implantation. In one embodiment, the first mode is a power conserving mode in which one or more non-essential sub-systems of the device are disabled. Prior to detection of implant, at least two conditions of the device known to reflect whether the device has been implanted are monitored. After implant has been detected, situations in which power to the device is disrupted and then restored will cause the device to enter a predefined 'power-on-reset' mode of operation. Prior to detection of implant, however, such conditions do not result in the device entering the power-on-reset mode, or this mode is reset. An Elective Replacement Indicator mode is also used which is based on measured impedance against a target battery impedance. When the measured battery impedance reaches the target level, the voltage of the battery that precipitates an ERI condition is modified.

Pacemaker implant recognition

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Eagan, MN, United States of America

Pierce Vatterott