Resumes
Resumes
Sergey Safarevich Phones & Addresses
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1507 Riveredge Ln, Whippany, NJ 07981
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Livingston, NJ
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Valencia, CA
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West Orange, NJ
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Centennial, CO
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Englewood, CO
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Bronx, NY
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Morgan, NJ
Publications
Us Patents
Interconnection Technique Between A Cable Conductor And An Electrode Of An Implantable Medical Device
View pageUS Patent:
6366820, Apr 2, 2002
Filed:
Mar 1, 2000
Appl. No.:
09/516622
Inventors:
Phong D. Doan - Stevenson Ranch CA
Kerwyn Schimke - Simi Valley CA
Sergey Safarevich - Valencia CA
Kerwyn Schimke - Simi Valley CA
Sergey Safarevich - Valencia CA
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 105
US Classification:
607122, 29825
Abstract:
A method of joining an electrically-conductive elongate member, which may be a multi-strand cable, to an electrically-conductive electrode, possibly for an implantable medical device, requires that the free end of the electrically-conductive member be inserted axially into a longitudinally extending passage of a tubular crimp/weld sleeve. Thereupon, the crimp/weld sleeve is crimped onto the electrically-conductive elongate member to achieve firm engagement between the crimp/weld sleeve and the electrically-conductive elongate member. The crimp/weld sleeve is provided with a radially outward extending prominent member which may be one of a variety of shapes. The electrode is tubular, overlies the outer surface of a longitudinally extending lead body, and is formed with an aperture defined by a rim having a transverse dimension greater than the transverse dimension of the prominent member. The crimp/weld sleeve is received in a recess adjacent the outer peripheral surface of the lead body and the prominent member is inserted into the aperture of the tubular electrode. A laser beam is directed transversely through the aperture of the electrode and onto the prominent member to simultaneously melt the prominent member and the electrode in the region of the aperture and create a mixture of the molten material of both the prominent member and the electrode within the aperture.
Laser-Welded Joint
View pageUS Patent:
6373024, Apr 16, 2002
Filed:
Feb 17, 1999
Appl. No.:
09/250796
Inventors:
Sergey Safarevich - Valencia CA
Stephen M. Jones - Saugus CA
Stephen M. Jones - Saugus CA
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
B23K 2600
US Classification:
21912164, 607 37, 607122
Abstract:
A method of joining a longitudinally extending wound element, or coiled wire strand, and a mating component, or post, of a body implantable lead assembly wherein the former has a longitudinally extending interior passage and an end portion adapted to be received by the latter. In one embodiment, the post is formed with an integral collar spaced from a terminal end thereof. The wound element is placed about the receiving portion and over the terminal end of the mating component and against the collar. The components are then joined by thermally fusing them together, preferably by means of a laser. If the collar and the wound element are fabricated of the same alloy, the thickness of the collar and the diameter of the coiled wire strand are designed to be substantially equal. If the components are fabricated of dissimilar alloys, then the thickness of the collar is relatively dimensioned with respect to the diameter of the strand in proportion to the relative square roots of thermal diffusivity of the alloy of the collar and of the alloy of the coiled wire strand. In another embodiment, a ring member is placed about, and in engagement with, the receiving portion of the mating component.
Double Threaded Stylet For Extraction Of Leads With A Threaded Electrode
View pageUS Patent:
6512959, Jan 28, 2003
Filed:
Nov 28, 2000
Appl. No.:
09/723961
Inventors:
Benedict L. Gomperz - North Hollywood CA
Russell Klehn - Valencia CA
Sergey Safarevich - Valencia CA
Russell Klehn - Valencia CA
Sergey Safarevich - Valencia CA
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 105
US Classification:
607122, 607126, 607127
Abstract:
A technique for removing an implanted lead from a body includes the steps of releasably attaching a stylet to both the distal end of the implanted lead and to the proximal end of the implanted lead. This results in a substantially unified stylet and implanted lead structure whereby withdrawal of the stylet and of the implanted lead as a unit facilitates the complete removal of the implanted lead from the body. A threaded tip end may be used for threaded engagement with a tapped bore at the distal end of the implanted lead and at the proximal end, attachment being provided by a threaded region on the stylet distant from the threaded tip end for threaded engagement with a tapped bore of a connector pin integral with the implanted lead. In this instance, the diameter of the proximal threaded region on the stylet is greater than that of the threaded tip end. In one embodiment, the implanted lead is resiliently extensible and the stylet is greater in length than the implanted lead in its relaxed condition and tension is applied to the proximal end of the implanted lead to thereby stretch it so that the proximal end of the implanted lead is generally coextensive with the proximal end of the stylet.
Double Threaded Stylet For Extraction Of Leads With A Threaded Electrode
View pageUS Patent:
6611710, Aug 26, 2003
Filed:
Nov 29, 2000
Appl. No.:
09/725604
Inventors:
Benedict L. Gomperz - North Hollywood CA
Russell Klehn - Valencia CA
Sergey Safarevich - Valencia CA
Russell Klehn - Valencia CA
Sergey Safarevich - Valencia CA
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 118
US Classification:
607 7, 607116, 607122, 600585
Abstract:
A technique for removing an implanted lead from a body includes the steps of releasably attaching a stylet to both the distal end of the implanted lead and to the proximal end of the implanted lead. This results in a substantially unified stylet and implanted lead structure whereby withdrawal of the stylet and of the implanted lead as a unit facilitates the complete removal of the implanted lead from the body. A threaded tip end may be used for threaded engagement with a tapped bore at the distal end of the implanted lead and at the proximal end, attachment being provided by a threaded region on the stylet distant from the threaded tip end for threaded engagement with a tapped bore of a connector pin integral with the implanted lead. In this instance, the diameter of the proximal threaded region on the stylet is greater than that of the threaded tip end. In one embodiment, the implanted lead is resiliently extensible and the stylet is greater in length than the implanted lead in its relaxed condition and tension is applied to the proximal end of the implanted lead to thereby stretch it so that the proximal end of the implanted lead is generally coextensive with the proximal end of the stylet.
Laser Welded Joint For Implantable Lead
View pageUS Patent:
6697675, Feb 24, 2004
Filed:
Jun 14, 2001
Appl. No.:
09/881179
Inventors:
Sergey Safarevich - Valencia CA
Benedict L. Gomperz - North Hollywood CA
Benedict L. Gomperz - North Hollywood CA
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 108
US Classification:
607116
Abstract:
A method of joining a wound element, or coiled wire strand, and a mating component, or integral ledge member, of a body implantable lead assembly wherein the former has a interior passage and an end portion adapted to be received by the latter. In one embodiment, the integral ledge member is formed with an integral collar spaced from a terminal end thereof. The wound element is placed about the receiving portion and over the terminal end of the mating component and against the collar. The components are then joined by thermally fusing them together, preferably by means of a laser. If the collar and the wound element are fabricated of the same alloy, the thickness of the collar and the diameter of the coiled wire strand are designed to be substantially equal. If the components are fabricated of dissimilar alloys, then the thickness of the collar is relatively dimensioned with respect to the diameter of the strand in proportion to the relative thermal diffusivity of the alloy of the collar and of the alloy of the coiled wire strand. In another embodiment, a ring member is placed about, and in engagement with, the receiving portion of the mating component.
Implantable Medical Device Having A Casing Providing High-Speed Telemetry
View pageUS Patent:
7174212, Feb 6, 2007
Filed:
Dec 10, 2003
Appl. No.:
10/733654
Inventors:
Russell Klehn - Valencia CA, US
Sergey Safarevich - Valencia CA, US
Sergey Safarevich - Valencia CA, US
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 1/00
US Classification:
607 36, 128903
Abstract:
A housing for an implantable medical device comprises a metallic wall including a telemetry window having a thickness that is thinner than the remainder of the housing wall and having an electrical conductivity that is less than that of the remainder of the housing wall. In another embodiment, an implantable medical device casing comprises a metallic wall including a telemetry window received within an aperture defined by said casing wall, the window having an electrical conductivity that is less than that of the remainder of the casing wall. Pursuant to another embodiment, there is provided an implantable medical device incorporating a casing as described above that is hermetically sealed and encloses a transceiver for bidirectional telemetric communication through the telemetry window.
Pre-Molded Header With Universal Tip-To-Tip Feedthru Adaptor
View pageUS Patent:
7489968, Feb 10, 2009
Filed:
Apr 7, 2006
Appl. No.:
11/399993
Inventors:
William Alexander - Castaic CA, US
Christopher Fleck - Canyon Country CA, US
Sergey Safarevich - Valencia CA, US
Christopher Fleck - Canyon Country CA, US
Sergey Safarevich - Valencia CA, US
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 1/375
US Classification:
607 36, 607 37
Abstract:
In fabricating a header assembly of an implantable medical device, one end of a bore contact wire attached to a connector block is keyed with one guiding channel at an upper region of a feedthru adapter and through the adapter to its undersurface. An opposite end is bent into conformance with an orientation channel on the adaptor undersurface. A tip end of a feedthru wire connected to electronic circuitry of the medical device and projecting out of a casing mounting surface is bent for alignment with the orientation channel so end portions of the feedthru wire and bore contact wire are in end to end engagement, then welded together. A plastic header is molded to encapsulate the adapter, connector block, and bore contact wire and, when solidified, has an undersurface for engagement on the casing and an elongated receptacle aligned with a connector block bore to receive the lead.
Reduced-Diameter Body-Implantable Leads And Methods Of Assembly
View pageUS Patent:
7787961, Aug 31, 2010
Filed:
Jul 11, 2007
Appl. No.:
11/776239
Inventors:
Sergey Safarevich - Valencia CA, US
Benedict L. Gomperz - North Hollywood CA, US
Steve Norling - Canyon Country CA, US
Serdar Unal - Los Angeles CA, US
Mark W. Kroll - Crystal Bay MN, US
Benedict L. Gomperz - North Hollywood CA, US
Steve Norling - Canyon Country CA, US
Serdar Unal - Los Angeles CA, US
Mark W. Kroll - Crystal Bay MN, US
Assignee:
Pacesetter, Inc. - Sylmar CA
International Classification:
A61N 1/05
US Classification:
607116
Abstract:
A body-implantable lead suitable for use in conjunction with implantable cardiac devices and method for assembling a body-implantable lead suitable for use in conjunction with implantable cardiac devices. The body-implantable lead includes a lead body having at least one inner lumen and at least one elongated conductor cable residing within the inner lumen. An end portion of the conductor cable is joined by an aligned weld joint directly to an end portion of a lead component. Exemplary lead components include, but are not limited to, an electrode member, an elongated conductive connector pin of a proximal connector, a conductor extending from a proximal end of a distal tip of the lead, and a second elongated conductor cable residing within a second inner lumen of the lead body.