Cerebral protection during carotid endarterectomy and downstream vascular protection during other surgeries
First Claim
1. A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising:
- a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery;
a second tubular member having a proximal end, a distal end, and a lumen therebetween which merges at an angle of substantially less than 90° and
communicates at its distal end with the lumen of the first tubular member, thereby allowing introduction of a medical device into the lumen of the first tubular member;
a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumens of the second and first tubular members; and
a blood filter disposed on an elongated instrument and inserted through the hemostatic valve into the lumen of the second tubular member.
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Accused Products
Abstract
A shunt and method of use for maintaining distal blood flow during an arteriotomy procedure is disclosed. The shunt includes a first tubular member having a proximal end, a distal end, and a lumen therebetween. The proximal end has an opening in communication with the lumen, and the proximal opening is adapted to receive blood from a first region of an artery. The distal end has an opening in communication with the lumen, and the distal opening is adapted to release blood into a second region of the artery. The shunt includes a second tubular member having a proximal end, a distal end, and a lumen therebetween which either merges and communicates at its distal end with the lumen of the first tubular member, or rides separate and parallel to it. The shunt also includes a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of a medical device into the lumen of the second tubular member and into the artery. In use, the distal opening of the shunt is inserted into the second region of an artery and secured to the lumen of the artery. A blood filter device is deployed within the artery. The proximal opening of the shunt is inserted into the first region of the artery and secured to the lumen of the artery. Endarterectomy is performed on the region of the artery which lies between the proximal opening and the distal opening of the shunt, and embolic material dislodged during the procedure is captured by the filter.
705 Citations
17 Claims
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1. A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising:
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a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery; a second tubular member having a proximal end, a distal end, and a lumen therebetween which merges at an angle of substantially less than 90° and
communicates at its distal end with the lumen of the first tubular member, thereby allowing introduction of a medical device into the lumen of the first tubular member;a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumens of the second and first tubular members; and a blood filter disposed on an elongated instrument and inserted through the hemostatic valve into the lumen of the second tubular member.
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2. A method for maintaining distal blood flow during an arteriotomy procedure, comprising the steps of:
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providing a shunt comprising a tubular member having a proximal opening, a distal opening, a first lumen therebetween and a second lumen having a first opening which merges and communicates with the first lumen of the tubular member and a second opening adapted to receive a blood filter device; inserting the distal opening of the shunt into a first region of a carotid artery and securing the shunt against the lumen of the carotid artery; inserting the blood filter into the second opening of the second lumen; advancing the blood filter into and beyond the lumen of the tubular member; expanding the blood filter to cover a substantial portion of the cross-sectional area of the carotid artery; inserting the proximal opening into a second region of the carotid artery and securing the shunt against the lumen of the carotid artery; and performing endarterectomy on a region of the carotid artery which lies between the proximal opening and the distal opening of the shunt. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A method for maintaining distal blood flow during an arteriotomy procedure, comprising the steps of:
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providing a shunt comprising a tubular member having a proximal opening, a distal opening, a first lumen therebetween, and a second lumen having a first segment which lies substantially parallel to the first lumen of the tubular member and a second segment which branches away from the first lumen of the tubular member; inserting the distal opening of the shunt into a first region of a carotid artery and securing the shunt against the lumen of the carotid artery; inserting the blood filter into the second segment of the second lumen; advancing the blood filter into and beyond the first segment of the second lumen; expanding the blood filter to cover a substantial portion of the cross-sectional area of the carotid artery; inserting the proximal opening into a second region of the carotid artery and securing the shunt against the lumen of the carotid artery; and performing endarterectomy on a region of the carotid artery which lies between the proximal opening and the distal opening of the shunt. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification