Device For Delivery Of Medical Devices To A Cardiac Valve
AssigneeAeeg AB
InventorErik Krahbichler
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Abstract
A catheter device is disclosed for transvascular delivery of a medical device to a cardiac valve region of a patient. The catheter device comprises an elongate sheath (2) with releasable locking members for controllably locking the elongate sheath in a shape at least partly along its length from a relaxed state to a locked state when positioned in relation to a cardiac valve. Furthermore, alignment members (5) are provided to provide for a desired positioning in relation to the cardiac valve. Embolic protection (8) is further provided.
Claims20
A catheter device for transvascular delivery of a medical device to a cardiac valve region of a patient, said catheter device comprising
- an elongate sheath with a lumen and a distal end, and
- an elongate member with a distal end portion comprising a plurality of radially expandable units, wherein said elongate member is retractably insertable into said lumen,
- said expandable units being arranged for temporarily positioning said elongate sheath in relation to said cardiac valve when in an expanded state outside said distal end of said elongate sheath;
- and
- wherein said elongate sheath comprises releasable locking members for controllably locking said elongate sheath in a shape at least partly along its length from a relaxed state to a locked state when positioned in relation to said cardiac valve by said expandable units in order to stabilize said elongate sheath.
The catheter device of any of claims 1 to 11, wherein said plurality of radially expandable units comprises expandable balloons, preferably three balloons positioned radially equidistant around a longitudinal axis of said elongate sheath.
A system for transvascularly delivering a medical device to a cardiac valve of a patient, said system comprising
- a catheter comprising an elongate sheath with a lumen in a relaxed state for minimally invasively introducing into said vascular system;
- said sheath having a distal end of said elongate sheath for navigating through said vascular system to said cardiac valve;
- a plurality of radially expandable units at least temporarily provideable at said distal end of said elongate sheath;
- wherein said radially expandable units are arranged for expanding to temporarily position said distal end in relation to said cardiac valve;
- and locking members of said catheter which, when released, maintain said sheath in a structurally locked state to maintain its spatial position relative said cardiac valve;
- whereby said expandable units are arranged to allow for increased blood flow around said sheath when returned to a non expanded configuration while said locked state is maintained for delivering a medical device through the lumen of said locked elongate sheath to said heart valve;
- and wherein said elongate sheath is arranged to return to said relaxed state when said locking members are released for withdrawing said elongate sheath in said relaxed state from the vasculature of said patient.
A method of transvascularly delivering a medical device to a cardiac valve of a patient comprising:
- introducing a catheter comprising an elongate sheath with a lumen in a relaxed state into said vascular system;
- navigating a distal end of said elongate sheath through said vascular system to said cardiac valve;
- radially expanding expandable units of said catheter or an elongate member positioned beyond a distal end of said sheath, to temporarily position in relation to said valve said elongate sheath;
- releasing locking members of said catheter to maintain said elongate sheath in a locked state;
- delivering a medical device through the lumen of said locked elongate sheath to said heart valve;
- releasing said locking members to return said elongate sheath to said relaxed state;
- and
- withdrawing said elongate sheath in said relaxed state from the vasculature of said patient.
Dependencies are inferred from the claim text.