In situ detection of endoleak and endotension
First Claim
1. An apparatus for detecting endoleak and endotension, comprising:
- a detector, located within a bypassed aneurysmal blood vessel, and having a detection member capable of detecting a condition in the bypassed aneurysmal blood vessel indicative of fresh blood therein;
a controller in communication with said detector and enabled to control the operation of said detector to make detection readings; and
a reader configured to evaluate said detection readings and thereby indicate the presence of fresh blood in the bypassed aneurysmal blood vessel.
1 Assignment
0 Petitions
Accused Products
Abstract
Endotension, the continued expansion and tensioning of a blood vessel at an aneurysm site after the repair of the aneurysm by placement of a stent graft therethrough, typically caused by refilling of the aneurysmal location by blood leakage thereto, is detected. The detection is accomplished by locating a detector in the aneurysmal vessel, between the blood vessel wall and the stent graft, and monitoring signals generating therefrom which are indicative of the arrival of fresh blood in the region, and thus a leakage of blood therein. The detector may be an oxygen sensor, and the monitoring can include maintaining a history of periodic blood oxygen signals indicative of the oxygen content of blood between the stent graft and the vessel wall, and the periodic analysis of these signals to determine whether the oxygen level is increasing, indicating the existence of endoleak and thus likely endotension.
-
Citations
29 Claims
-
1. An apparatus for detecting endoleak and endotension, comprising:
-
a detector, located within a bypassed aneurysmal blood vessel, and having a detection member capable of detecting a condition in the bypassed aneurysmal blood vessel indicative of fresh blood therein;
a controller in communication with said detector and enabled to control the operation of said detector to make detection readings; and
a reader configured to evaluate said detection readings and thereby indicate the presence of fresh blood in the bypassed aneurysmal blood vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of providing detection of aneurysm repair irregularity following aneurysm repair, comprising the steps of:
-
providing a sensor indicative of the presence of at least one fluid constituent entering the space between an aneurysm repair vehicle and the aneurysmal wall;
providing a mechanism to operate and interpret any data generated by the detector; and
instructing the placement of the sensor, at a location adjacent the aneurysmal wall. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of detecting endotension in a blood vessel following aneurysm repair, comprising the steps of:
-
providing a sensor connected by a lead to a controller;
positioning said sensor into the space between an aneurysm repair vehicle and the wall of the blood vessel having an aneurysmal event;
directing the sensor, with the controller, to initiate a sensing of a property of a fluid present in the space between an aneurysm repair vehicle and the wall of the blood vessel having an aneurysmal event;
reading, by the sensor, at least one biochemical property of a fluid in the space between the aneurysm repair vehicle and the wall of the blood vessel having an aneurysmal event;
generating a signal from the sensor indicative of the property and transmitting the signal from the sensor to the controller; and
recording the signal in a memory in the controller. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification