SUSCEPTIBILITY-BASED LOCAL FLOW DETECTION TO CONTROL MR-GUIDED ABLATION USING BALLOON DEVICES
First Claim
1. An interventional instrument comprising:
- an elongate portion configured for insertion into a fluid conduit of a human or animal subject;
a balloon disposed proximate to a tip of the elongate portion and sized to anchor in a lumen of the fluid conduit when inflated; and
one or more susceptibility markers disposed proximate to the tip of the elongate portion and configured to generate an extended magnetic resonance image artifact corresponding to fluid flow through the fluid conduit past the inflated balloon.
1 Assignment
0 Petitions
Accused Products
Abstract
An interventional instrument (24) for use in performing an interventional procedure includes: a balloon (30) disposed proximate to a tip of the interventional instrument that inflates and anchors in a lumen of a fluid conduit during the interventional procedure; and one or more susceptibility markers (34) disposed proximate to the tip of the interventional instrument. A magnetic resonance scanner (10) is configured to image at least the tip of the interventional instrument during the interventional procedure using a magnetic resonance imaging sequence in which fluid flow (40) through the fluid conduit past the inflated balloon produces an extended magnetic resonance image artifact (42).
15 Citations
19 Claims
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1. An interventional instrument comprising:
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an elongate portion configured for insertion into a fluid conduit of a human or animal subject; a balloon disposed proximate to a tip of the elongate portion and sized to anchor in a lumen of the fluid conduit when inflated; and one or more susceptibility markers disposed proximate to the tip of the elongate portion and configured to generate an extended magnetic resonance image artifact corresponding to fluid flow through the fluid conduit past the inflated balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An interventional system comprising:
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an interventional instrument for use in performing an interventional procedure, the interventional instrument including (i) a balloon disposed proximate to a tip of the interventional instrument that inflates and anchors in a lumen of a fluid conduit during the interventional procedure and (ii) one or more susceptibility markers disposed proximate to the tip of the interventional instrument; and a magnetic resonance scanner configured to image at least the tip of the interventional instrument during the interventional procedure using a magnetic resonance imaging sequence in which fluid flow through the fluid conduit past the inflated balloon produces an extended magnetic resonance image artifact. - View Dependent Claims (13, 14, 15, 16)
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17. An interventional procedure comprising:
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inserting a tip of an interventional instrument into a fluid conduit of a human or animal subject; inflating a balloon proximate to the tip of the interventional instrument to block fluid flow through the fluid conduit, the inflated balloon comprising a paramagnetic or ferromagnetic material; and assessing the blockage of fluid flow by performing magnetic resonance imaging of the inflated balloon comprising the paramagnetic or ferromagnetic material. - View Dependent Claims (18, 19)
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Specification