Cardiac assist balloon and method of insertion
A novel cardiac assist balloon assembly and methods of insertion are shown. In one embodiment, the balloon end of the assembly has an intrinsic curvature adapted to the aortic arch, and is straightened by a removable stiff member extending within the catheter to facilitate insertion along the passag...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A novel cardiac assist balloon assembly and methods of insertion are shown. In one embodiment, the balloon end of the assembly has an intrinsic curvature adapted to the aortic arch, and is straightened by a removable stiff member extending within the catheter to facilitate insertion along the passage. When the balloon is at a curved portion of the passage, the stiff member is retracted, allowing the balloon and adjacent support to conform to the curved passage and advance further without trauma to the vessel. The curved balloon may be stably positioned in a curved arterial passage and pumped with a pulsatile inflation source. In another aspect, an occluding balloon having an asymmetric curvature achieves reliable blood pumping near to the atrium. A torsion-free extender stretches the balloon for compacting it and insertion, and may be inserted over a guide wire, operating without blocking the pressure lumen. |
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