Shunt for redistributing atrial blood volume
First Claim
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1. A device for regulating blood volume distribution configured for placement in an interatrial septum between a patient'"'"'s left atrium and patient'"'"'s right atrium, the device comprising:
- an anchor having a first region, a second region, a neck region joining the first region to the second region, the anchor configured to transition from a contracted delivery state to an expanded deployed state in which the first region extends into the patient'"'"'s left atrium, the second region extends into the patient'"'"'s right atrium, and the neck region contacts the interatrial septum;
a conduit affixed to the anchor and having a lumen wall defining a lumen, the lumen wall resistant to transmural and translational tissue growth, the conduit having a first end that extends from the neck region a first distance of at least 3 mm into the patient'"'"'s left atrium and a second end that extends from the neck region a second distance of at least 3 mm into the patient'"'"'s right atrium, thereby preventing pannus formation from narrowing the lumen in the neck region.
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Abstract
A shunt for regulating blood pressure between a patient'"'"'s left atrium and right atrium comprises an anchor comprising a neck region, first and second end regions, and a conduit affixed with the anchor that formed of a biocompatible material that is resistant to transmural and translation tissue ingrowth and that reduces a risk of paradoxical embolism.
201 Citations
21 Claims
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1. A device for regulating blood volume distribution configured for placement in an interatrial septum between a patient'"'"'s left atrium and patient'"'"'s right atrium, the device comprising:
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an anchor having a first region, a second region, a neck region joining the first region to the second region, the anchor configured to transition from a contracted delivery state to an expanded deployed state in which the first region extends into the patient'"'"'s left atrium, the second region extends into the patient'"'"'s right atrium, and the neck region contacts the interatrial septum; a conduit affixed to the anchor and having a lumen wall defining a lumen, the lumen wall resistant to transmural and translational tissue growth, the conduit having a first end that extends from the neck region a first distance of at least 3 mm into the patient'"'"'s left atrium and a second end that extends from the neck region a second distance of at least 3 mm into the patient'"'"'s right atrium, thereby preventing pannus formation from narrowing the lumen in the neck region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for regulating blood volume distribution between a patient'"'"'s left atrium and right atrium, the device comprising:
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an anchor having, in a deployed state, a first region configured to be disposed in the patient'"'"'s left atrium, a second region configured to be disposed in a right atrium, and a neck region disposed between the first and second regions, the neck region configured to engage a fossa ovalis of an atrial septum; a conduit affixed to the anchor and having a lumen that extends through the first region, the second region and the neck region, the conduit configured so that when implanted an end of the conduit protrudes into the right atrium a distance sufficient to place the end out of a natural circulation flow path in the right atrium, thereby reducing a risk that thrombus entrained in the natural circulation flow path will be directed into the lumen. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification