Dual-chamber leadless intra-cardiac medical device with intra-cardiac extension
First Claim
1. A leadless intra-cardiac medical device (LIMD), comprising:
- a housing configured to be implanted entirely within a single local chamber of the heart;
a base on the housing, the base configured to be secured to the local chamber;
a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber;
an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body;
wherein the stabilization arm includes a stabilizer end-segment located at the distal end and extending in a first lateral direction to engage a first region of the heart, the active interim-segment extending in a second lateral direction to engage a second region of wall tissue of the adjacent chamber;
a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and
a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
A leadless intra-cardiac medical device includes a housing that is configured to be implanted entirely within a single local chamber of the heart. A first electrode is provided on the housing at a first position such that when the housing is implanted in the local chamber, the first electrode engages the local wall tissue at a local activation site within the conduction network of the local chamber. An intra-cardiac extension is coupled to the housing and configured to extend from the local chamber into an adjacent chamber of the heart. A stabilization arm of the intra-cardiac extension engages the adjacent chamber. A second electrode on the intra-cardiac extension engages distal wall tissue at a distal activation site within the conduction network of the adjacent chamber.
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Citations
24 Claims
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1. A leadless intra-cardiac medical device (LIMD), comprising:
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a housing configured to be implanted entirely within a single local chamber of the heart; a base on the housing, the base configured to be secured to the local chamber; a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber; an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body; wherein the stabilization arm includes a stabilizer end-segment located at the distal end and extending in a first lateral direction to engage a first region of the heart, the active interim-segment extending in a second lateral direction to engage a second region of wall tissue of the adjacent chamber; a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A leadless intra-cardiac medical device (LIMD), comprising:
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a housing configured to be implanted entirely within a single local chamber of the heart; a base on the housing, the base configured to be secured to the local chamber; a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber; an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body; a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively; wherein the active interim-segment is pre-formed in a curved shape having a trough, the second electrode and a third electrode located on the extension body in the trough, the curved shape configured to following a contour of an interior of a right atrial appendage. - View Dependent Claims (10)
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11. A leadless intra-cardiac medical device (LIMD), comprising:
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a housing configured to be implanted entirely within a single local chamber of the heart; a base on the housing, the base configured to be secured to the local chamber; a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber; an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body; a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively; wherein the controller is configured to time delivery of the stimulus pulses at the distal activation site to cause contraction of the adjacent chamber in a predetermined relation to contraction of the local chamber.
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12. A leadless intra-cardiac medical device (LIMD), comprising:
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a housing configured to be implanted entirely within a single local chamber of the heart; a base on the housing, the base configured to be secured to the local chamber; a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber; an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body; a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively; wherein the stabilization arm includes a flexible stabilizer end-segment wrapped into at least one turn.
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13. A leadless intra-cardiac medical device (LIMD), comprising:
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a housing configured to be implanted entirely within a single local chamber of the heart; a base on the housing, the base configured to be secured to the local chamber; a first electrode provided on the housing at a first position such that, when the housing is implanted in the local chamber, the first electrode is configured to engage wall tissue at a local activation site within a conduction network of the local chamber; an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the housing and located in the local chamber, the extension body including a stabilization arm provided at the distal end thereof, the extension body being sufficient in length to extend from the local chamber into an adjacent chamber, the extension body including an active interim-segment located at an intermediate point along the extension body; a second electrode provided on the active interim-segment of the extension body, the second electrode configured to engage wall tissue at a distal activation site within a conduction network of the adjacent chamber; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first and second electrodes to the local and distal activation sites, respectively; and further comprising a conductor wire extending within the extension body from the housing to the second electrode, the conductor terminating at the second electrode, the stabilization arm being void of electrodes and conductor wires.
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14. A method for implanting a leadless intra-cardiac medical device (LIMD), the LIMD including a housing with a base, a first electrode provided on the housing, an intra-cardiac extension having a proximal end, a distal end and an extension body extending there between, the proximal end coupled to the, the extension body including a stabilization extension provided at the distal end of the intra-cardiac extension, and an active interim-segment located at an intermediate point along the extension body between the stabilization extension and the proximal end of the intra-cardiac extension, a second electrode provided on the active interim-segment, the method comprising:
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guiding the housing, utilizing an introducer, to a local activation site within a conductive network of the local chamber; positioning the first electrode to engage wall tissue at the local activation site within the conductive network of the local chamber; actively securing the housing to tissue of interest at the local activation site by applying rotational force to the stabilization extension which causes an active fixation member on the housing to become securely affixed to the wall tissue; guiding the active interim-segment, utilizing the introducer, to a distal activation site within a conductive network of an adjacent chamber; positioning the second electrode to engage tissue of interest at the distal activation site within the conductive network of the adjacent chamber; and configuring a controller within the housing to cause stimulus pulses to be delivered, in a dual chamber synchronous manner, through the first electrode to the local activation site, and through the second electrode to the distal activation site. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification