Interventional medical devices, device systems, and fixation components thereof

    公开(公告)号:US12251559B2

    公开(公告)日:2025-03-18

    申请号:US17306032

    申请日:2021-05-03

    Abstract: A fixation mechanism of an implantable medical device is formed by a plurality of tines fixedly mounted around a perimeter of a distal end of the device. Each tine may be said to include a first segment fixedly attached to the device, a second segment extending from the first segment, and a third segment, to which the second segment extends. When the device is loaded in a lumen of a delivery tool and a rounded free distal end of each tine engages a sidewall that defines the lumen, to hold the tines in a spring-loaded condition, the first segment of each tine, which has a spring-biased pre-formed curvature, becomes relatively straightened, and the third segment of each tine, which is terminated by the free distal end, extends away from the axis of the device at an acute angle in a range from about 45 degrees to about 75 degrees.

    ROTATABLE ADAPTER FOR CONNECTING IMPLANTABLE MEDICAL LEADS TO TEST DEVICES

    公开(公告)号:US20240189607A1

    公开(公告)日:2024-06-13

    申请号:US18582575

    申请日:2024-02-20

    CPC classification number: A61N1/3752 A61N1/37512

    Abstract: An adapter configured to electrically connect a test device to an implantable medical lead comprises a rotational electrical coupling. The rotational electrical coupling is configured to electrically connect a lead electrical connector to an adapter electrical connector. The rotational electrical coupling comprises a first conductive component configured to be electrically connected to the lead electrical connector and rotatable with a proximal portion of the implantable medical lead, and a second conductive component electrically connected to the first conductive component and the adapter electrical connector. The second conductive component may be rotationally fixed. The first and second conductive components may comprise graphite or another soft metal.

    Rotatable adapter for connecting implantable medical leads to test devices

    公开(公告)号:US11944828B2

    公开(公告)日:2024-04-02

    申请号:US17348666

    申请日:2021-06-15

    CPC classification number: A61N1/3752 A61N1/37512

    Abstract: An adapter configured to electrically connect a test device to an implantable medical lead comprises a rotational electrical coupling. The rotational electrical coupling is configured to electrically connect a lead electrical connector to an adapter electrical connector. The rotational electrical coupling comprises a first conductive component configured to be electrically connected to the lead electrical connector and rotatable with a proximal portion of the implantable medical lead, and a second conductive component electrically connected to the first conductive component and the adapter electrical connector. The second conductive component may be rotationally fixed. The first and second conductive components may comprise graphite or another soft metal.

    Implantable Medical Device
    44.
    发明申请

    公开(公告)号:US20220395683A1

    公开(公告)日:2022-12-15

    申请号:US17745083

    申请日:2022-05-16

    Applicant: Medtronic Inc.

    Abstract: An implantable medical device configured to deliver pacing therapy, the implantable medical device including a device body configured to position within a heart, where the device body comprises a proximal body portion and a distal body portion and defines a longitudinal axis extending through the proximal body portion and the distal body portion, the proximal body portion is configured to rotate around the longitudinal axis relative to distal body portion, and a leadlet mechanically coupled to the device body, where the leadlet mechanically supports an electrode configured to deliver pacing therapy, and where in response to the proximal body portion rotating relative to the distal body portion, the device body is configured to alter an extension length of the leadlet.

    VFA CARDIAC RESYNCHRONIZATION THERAPY

    公开(公告)号:US20220111216A1

    公开(公告)日:2022-04-14

    申请号:US17558832

    申请日:2021-12-22

    Abstract: VfA cardiac therapy uses an implantable medical device or system. The implantable medical device includes a tissue-piercing electrode implanted in the basal and/or septal region of the left ventricular myocardium of the patient's heart from the triangle of Koch region of the right atrium through the right atrial endocardium and central fibrous body. The device may include a right atrial electrode, a right atrial motion detector, or both. The device may be implanted completely within the patient's heart or may use one or more leads to implant electrodes in the patient's heart. The device may be used to provide cardiac therapy, including single or multiple chamber pacing, atrioventricular synchronous pacing, asynchronous pacing, triggered pacing, cardiac resynchronization pacing, or tachycardia-related therapy. A separate medical device may be used to provide some functionality for cardiac therapy, such as sensing, pacing, or shock therapy.

    Implantable medical device with retractable fixation sheath

    公开(公告)号:US10758733B2

    公开(公告)日:2020-09-01

    申请号:US15705690

    申请日:2017-09-15

    Abstract: An implantable medical device has a housing having a proximal end, a distal end and an outer sidewall extending from the proximal end to the distal end. A fixation sheath includes a housing sheath portion extending along the outer sidewall of the housing, and a fixation member portion extending from the housing sheath portion. The housing sheath portion is advanceable from a first position along the outer sidewall of the housing in which the fixation member portion is retracted toward the proximal end of the housing to a second position along the outer sidewall of the housing in which the fixation member portion is deployed to extend away from the housing distal end for anchoring the implantable medical device at an implant site.

    AV SYNCHRONOUS VFA CARDIAC THERAPY
    49.
    发明申请

    公开(公告)号:US20190290910A1

    公开(公告)日:2019-09-26

    申请号:US16361970

    申请日:2019-03-22

    Abstract: VfA cardiac therapy uses an implantable medical device or system. The implantable medical device includes a tissue-piercing electrode implanted in the basal and/or septal region of the left ventricular myocardium of the patient's heart from the triangle of Koch region of the right atrium through the right atrial endocardium and central fibrous body. The device may include a right atrial electrode, a right atrial motion detector, or both. The device may be implanted completely within the patient's heart or may use one or more leads to implant electrodes in the patient's heart. The device may be used to provide cardiac therapy, including single or multiple chamber pacing, atrioventricular synchronous pacing, asynchronous pacing, triggered pacing, cardiac resynchronization pacing, or tachycardia-related therapy. A separate medical device may be used to provide some functionality for cardiac therapy, such as sensing, pacing, or shock therapy.

    Interventional medical systems and associated assemblies and methods

    公开(公告)号:US10398892B2

    公开(公告)日:2019-09-03

    申请号:US15216466

    申请日:2016-07-21

    Abstract: A catheter assembly includes a cap and a spring-biased tethering member coupled thereto. The cap includes first and second portions, and a transition zone extending therebetween. A girth of the first portion is sized to fit within a distal-most opening of the catheter assembly; and a girth of the second portion tapers from a first size at the transition zone, which is too large to fit within the distal-most opening, to a smaller size at a distal end of the cap. The spring-biased tethering member holds the cap in open and closed positions, when the cap first portion extends within the distal-most opening, and when the cap is separated from the distal-most opening, respectively. At the closed position, the first portion is approximately concentric with the distal-most opening, and at the open position, an entirety of the cap is laterally offset from the distal-most opening.

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