Endoluminal device and system and method for detecting a change in pressure differential across an endoluminal device
First Claim
1. An endoluminal device for deployment in a body lumen, the device comprising:
- a radially expandable stent;
a graft attached to said stent, wherein said graft defines a radially interior space having an internal pressure corresponding to systolic blood pressure and a radially exterior space having an external pressure corresponding to the pressure of an aneurysm sac; and
a plurality of indicator members affixed to said graft and adapted to form a normal pattern in response to a normal pressure differential between the internal pressure and the external pressure and an abnormal pattern in response to an abnormal pressure differential between the internal pressure and the external pressure wherein the normal pressure differential is the pressure differential between the radially interior space and the radially exterior space in the absence of leaks across the device.
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Accused Products
Abstract
An endoluminal device for deployment in a body lumen includes a radially expandable stent, a graft attached to the stent, and a plurality of indicator members affixed to the graft and adapted to form a normal pattern in response to a normal pressure differential and an abnormal pattern in response to an abnormal pressure differential across the graft. By forming different patterns at different pressure differentials, the indicator members enable the detection of a change in pressure which could be evidence of a leak. A system for detecting a change in pressure differential includes the endoluminal device and an imaging system for displaying the indicator members. A method for detecting a change in pressure includes the steps of identifying the normal pattern, implanting the device, imaging the indicator members, and comparing the imaged pattern with the normal pattern to determine whether the normal pressure or an abnormal pressure differential exists.
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Citations
14 Claims
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1. An endoluminal device for deployment in a body lumen, the device comprising:
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a radially expandable stent; a graft attached to said stent, wherein said graft defines a radially interior space having an internal pressure corresponding to systolic blood pressure and a radially exterior space having an external pressure corresponding to the pressure of an aneurysm sac; and a plurality of indicator members affixed to said graft and adapted to form a normal pattern in response to a normal pressure differential between the internal pressure and the external pressure and an abnormal pattern in response to an abnormal pressure differential between the internal pressure and the external pressure wherein the normal pressure differential is the pressure differential between the radially interior space and the radially exterior space in the absence of leaks across the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14)
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10. An endoluminal device for deployment in a body lumen, the device comprising:
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a radially expandable stent comprising a metal wire defining a plurality of openings wherein said stent has a portion defining a border of a first of said openings and said border comprises a plurality of edges; a graft attached to said stent, wherein said graft defines a radially interior space having an internal pressure and a radially exterior space having an external pressure; and a plurality of indicator members affixed to said graft, positioned on said graft at regions corresponding to at least one of said openings, and adapted to form a normal pattern in response to a normal pressure differential between the internal pressure and the external pressure and an abnormal pattern in response to an abnormal pressure differential between the internal pressure and the external pressure, wherein said normal pattern comprises a plurality of lines disposed within said first opening and parallel to each other and to a first of said edges. - View Dependent Claims (11)
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Specification