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US 9,198,683 B2Granted
Tissue capture and occlusion systems and methods
AssigneesAegis Medical Innovations Inc., Mayo Foundation for Medical Education and Research
InventorsPaul A. Friedman, Charles J. Bruce, Samuel J. Asirvatham, Trevor A. McCaw, Elliot Y. K. Hong
Life of this patent
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Abstract
Systems and methods capture and/or occlusion of selected body tissue using various tissue characteristics and/or techniques are described. In the context of left atrial appendage closure, the systems and methods can be used to capture the left atrial appendage while a closure instrument (suture, clip, ring, etc.) is placed over the appendage and tightened down or a closure method (ablation, cryogenic procedures, stapling, etc.) is performed to close the left atrial appendage.
Claims20
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- a first capture device electrode coupled to the capture device;
- a second capture device electrode coupled to the capture device;
- and
- electrical monitoring apparatus operably coupled to the first capture device electrode and the second capture device electrode, wherein the electrical monitoring apparatus is configured to:
- monitor an impedance between the first capture device electrode and the second capture device electrode;
- and
- determine whether the capture device has captured atrial tissue based on the monitored impedance.
6 more elements
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- a ligation element comprising a loop, wherein the ligation element is configured to ligate the body tissue by tightening of the loop around the body tissue;
- and
- force-limiting apparatus operably coupled to the ligation element to restrict the amount of force applied by ligation element when the ligation element is tightened around the body tissue.
2 more elements
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- an electrode coupled to the capture device;
- a ligation element configured to ligate the body tissue;
- force-limiting apparatus operably coupled to the ligation element to restrict the amount of force applied by ligation element when the ligation element is tightened around the body tissue;
- and
- electrical monitoring apparatus operably coupled to the electrode, wherein the electrical monitoring apparatus is configured to:
- monitor electrical activity of the body tissue using the electrode;
- compare the monitored electrical activity to a threshold value;
- determine whether the body tissue has been ligated based on the comparison between the monitored electrical activity and the threshold value;
- and
- use the force-limiting apparatus to restrict the amount of force applied by the ligation element based on the comparison between the monitored electrical activity and the threshold value.
9 more elements
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- an electrode coupled to the capture device;
- actuation apparatus operably coupled to the capture device and configured to actuate the capture device to capture the body tissue;
- a ligation element configured to ligate the body tissue;
- and
- electrical monitoring apparatus operably coupled to the electrode and the actuation apparatus, wherein the electrical monitoring apparatus is configured to:
- monitor electrical activity of the body tissue using the electrode;
- compare the monitored electrical activity to a threshold value;
- and
- determine whether the body tissue has been ligated based on the based on the comparison between the monitored electrical activity and the threshold value;
- and
- actuate the capture device to capture the body tissue using the actuation apparatus based on the monitored electrical activity.
10 more elements
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- an electrode coupled to the capture device;
- a ligation element configured to ligate the body tissue;
- actuation apparatus operably coupled to the ligation element to tighten and loosen the ligation element around the body tissue;
- and
- electrical monitoring apparatus operably coupled to the electrode and the actuation apparatus, wherein the electrical monitoring apparatus is configured to:
- monitor electrical activity of the body tissue using the electrode;
- compare the monitored electrical activity to a threshold value;
- and
- determine whether the body tissue has been ligated based on the based on the comparison between the monitored electrical activity and the threshold value;
- and
- tighten the ligation element around the body tissue using the actuation apparatus based on the monitored electrical activity.
10 more elements
A tissue capture system comprising:
- a capture device configured to capture body tissue;
- a capture shaft comprising an elongated body comprising a proximal end and a distal end, wherein the distal end of the capture shaft is coupled to the capture device;
- an electrode coupled to the capture device;
- a ligation element comprising a loop, wherein the ligation element is configured to ligate the body tissue by tightening of the loop around the body tissue;
- and
- electrical monitoring apparatus operably coupled to the electrode, wherein the electrical monitoring apparatus is configured to:
- monitor electrical activity of the body tissue using the electrode;
- compare the monitored electrical activity to a threshold value;
- and
- determine whether the body tissue has been ligated based on the based on the comparison between the monitored electrical activity and the threshold value after tightening of the loop around the body tissue.
7 more elements
Dependencies are inferred from the claim text.