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 has a radial interior exposed to an internal pressure and a radial exterior space exposed to an external pressure; and
at least one indicator member affixed to said graft and adapted to form a first pattern within a single opening in the stent having a first degree of predetermined curvature in response to a first predetermined pressure differential between the internal pressure and the external pressure with the stent in an expanded configuration and a second pattern different from the first pattern within the single opening in the stent having a second degree of curvature in response to a second pressure differential between the internal pressure and the external pressure with the stent in an expanded configuration.
2 Assignments
0 Petitions
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.
12 Citations
19 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 has a radial interior exposed to an internal pressure and a radial exterior space exposed to an external pressure; and at least one indicator member affixed to said graft and adapted to form a first pattern within a single opening in the stent having a first degree of predetermined curvature in response to a first predetermined pressure differential between the internal pressure and the external pressure with the stent in an expanded configuration and a second pattern different from the first pattern within the single opening in the stent having a second degree of curvature in response to a second pressure differential between the internal pressure and the external pressure with the stent in an expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for detecting a change in pressure differential across an implanted endoluminal device between an internal pressure corresponding to systolic blood pressure at a radially interior space and an external pressure corresponding to the pressure of an aneurysm sac at a radially exterior space, wherein said device comprises a radially expandable stent and a graft attached to said stent, the system comprising:
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a plurality of indicator members affixed to said graft and adapted to form a predetermined normal pattern within a single opening in the stent in response to a predetermined normal pressure differential between the internal pressure and the external pressure and an abnormal pattern different from the predetermined normal pattern within the single opening in the stent in response to an abnormal pressure differential between the internal pressure and the external pressure wherein the predetermined 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; and imaging means for displaying said plurality of indicator members. - View Dependent Claims (19)
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Specification