Electrically isolating electrical components in a medical electrical lead with an active fixation electrode
First Claim
1. An implantable medical lead, comprising:
- a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal end to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device;
b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end;
c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof;
d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the electrical conductor;
e) an electrode electrically connected to the electronic component at the distal casing end; and
f) a seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end from the open distal collar end,g) wherein the at least one electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal between an inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof.
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0 Petitions
Accused Products
Abstract
A lead body adapted for in-vivo implantation in a living subject includes a proximal end configured for electrical and mechanical connection to a therapy or a monitoring device, and a distal end. A collar is disposed at the distal end of the lead body, and a casing is disposed within the collar and is translatable along a central longitudinal axis of the collar. At least one electrical conductor extends substantially the length of the lead body, and an electronic component is disposed within the casing and conductively coupled to the electrical conductor. An electrode is mechanically connected to the casing and conductively coupled to the electronic component. A seal is disposed between the casing assembly and the collar to prevent passage of ionic fluid into the lead body through its distal end.
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Citations
38 Claims
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1. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal end to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; and f) a seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end from the open distal collar end, g) wherein the at least one electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal between an inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 26)
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21. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal end to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; f) a seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end from the open distal collar end; and g) an insulative conformal coating disposed about at least a portion of the casing, the at least one electrical conductor, or both h) wherein the at least one electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal between an inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof. - View Dependent Claims (22, 23, 24, 25, 27, 28, 29, 30, 31)
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32. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a distal end to a proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal pin at a proximal casing end to a distal pin at a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof and wherein the proximal and distal pins are electrically insulated from the casing; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the electrical conductor at the proximal pin; e) an electrode mechanically and electrically coupled to the electronic component at the distal pin; and f) a seal disposed between the casing and the collar to substantially prevent passage of fluid to the proximal casing end from the open distal collar end thereof.
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33. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least a first and a second electrical conductors extending from respective first and second distal ends to first and second proximal ends that are configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the first electrical conductor, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the second electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; and f) a seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end from the open distal collar end, g) wherein the second electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal between an inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof.
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34. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least a first and a second electrical conductors extending from respective first and second distal ends to first and second proximal ends that are configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the first electrical conductor, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the second electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; and f) an annular seal supported by the casing and extending to the collar to substantially prevent passage of fluid to the proximal casing end from the open distal collar end thereof, g) wherein the second electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal against an inner surface of the collar changes upon such axial proximal and distal translation thereof.
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35. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal end to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the at least one electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; and f) a seal support connected between the distal casing end and the electrode, the seal support supporting an annular seal extending to the collar to substantially prevent passage of fluid to the proximal casing end from the open distal collar end thereof, g) wherein the at least one electrical conductor, the casing, the seal support including the seal, and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal against an inner surface of the collar changes upon such axial proximal and distal translation thereof. - View Dependent Claims (36)
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37. An implantable medical lead, comprising:
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a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal ends to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; f) a seal support connected between the distal casing end and the electrode, the seal support supporting a first, annular seal extending to the collar to substantially prevent passage of fluid to the proximal casing end from the open distal collar end thereof; and g) a second seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end, h) wherein the at least one electrical conductor, the casing, the seal support including the first seal, and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the first seal against an inner surface of the collar changes and as a contact location of the second seal between the inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof. - View Dependent Claims (38)
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Specification