Rotational Atherectomy Device with Distal Protection Capability and Method of Use
First Claim
1. A method of using a rotational atherectomy device to remove a stenotic lesion from within a coronary or peripheral artery, comprising:
- advancing a distal fluid inflatable counterweight located at a distal tip of a rotational atherectomy device to a position distal of a stenotic lesion in a coronary or peripheral artery while an eccentric abrasive element of the rotational atherectomy device is positioned proximal of the stenotic lesion in the coronary or peripheral artery, wherein the rotational atherectomy device comprises a rotatable, flexible drive shaft defining a fluid flow path to the distal fluid inflatable counterweight, and wherein the eccentric abrasive element is fixed to a region of the drive shaft at a position that is proximal to and spaced away from the distal fluid inflatable counterweight and that is proximal to and spaced away from a proximal counterweight;
inflating the distal fluid inflatable counterweight of the rotational atherectomy device to a larger size after the distal fluid inflatable counterweight is advanced to the position distal of the stenotic lesion in the coronary or peripheral artery;
rotating the drive shaft of the rotational atherectomy device such that the eccentric abrasive element, the distal fluid inflatable counterweight, and the proximal counterweight rotate together with the drive shaft; and
at least partially removing the stenotic lesion in the coronary or peripheral artery with the eccentric abrasive element with while the eccentric abrasive element rotates together with the distal fluid inflatable counterweight, the proximal counterweight, and the drive shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotational device for removing a stenotic lesion from within a vessel of a patient is disclosed. The device comprises a flexible hollow drive shaft having a distal end insertable into the vessel and an abrasive element located on the drive shaft proximal to the distal end of the drive shaft to abrade a stenotic lesion when the drive shaft rotates. The hollow drive shaft defines a lumen for fluid supplied into the drive shaft to flow in an antegrade direction along the lumen and into the vessel from the drive shaft distal to the abrasive element so that the fluid entering the vessel flows in a retrograde direction over the abrasive element and the drive shaft to entrain debris abraded by the abrasive element for removal of said debris from the patient.
-
Citations
20 Claims
-
1. A method of using a rotational atherectomy device to remove a stenotic lesion from within a coronary or peripheral artery, comprising:
-
advancing a distal fluid inflatable counterweight located at a distal tip of a rotational atherectomy device to a position distal of a stenotic lesion in a coronary or peripheral artery while an eccentric abrasive element of the rotational atherectomy device is positioned proximal of the stenotic lesion in the coronary or peripheral artery, wherein the rotational atherectomy device comprises a rotatable, flexible drive shaft defining a fluid flow path to the distal fluid inflatable counterweight, and wherein the eccentric abrasive element is fixed to a region of the drive shaft at a position that is proximal to and spaced away from the distal fluid inflatable counterweight and that is proximal to and spaced away from a proximal counterweight; inflating the distal fluid inflatable counterweight of the rotational atherectomy device to a larger size after the distal fluid inflatable counterweight is advanced to the position distal of the stenotic lesion in the coronary or peripheral artery; rotating the drive shaft of the rotational atherectomy device such that the eccentric abrasive element, the distal fluid inflatable counterweight, and the proximal counterweight rotate together with the drive shaft; and at least partially removing the stenotic lesion in the coronary or peripheral artery with the eccentric abrasive element with while the eccentric abrasive element rotates together with the distal fluid inflatable counterweight, the proximal counterweight, and the drive shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of using a rotational atherectomy device to remove a stenotic lesion from within a coronary or peripheral artery, comprising:
-
advancing a distal fluid inflatable counterweight located at a distal tip of a rotational atherectomy device to a position distal of a stenotic lesion in a coronary or peripheral artery while an eccentric abrasive element of the rotational atherectomy device is positioned proximal of the stenotic lesion in the coronary or peripheral artery, wherein the rotational atherectomy device comprises a rotatable, flexible drive shaft defining a fluid flow path to the distal fluid inflatable counterweight; adjusting the distal fluid inflatable counterweight of the rotational atherectomy device to a larger size after the distal fluid inflatable counterweight is advanced to the position distal of the stenotic lesion in the coronary or peripheral artery; at least partially removing the stenotic lesion in the coronary or peripheral artery with the eccentric abrasive element with while the eccentric abrasive element rotates together with the distal fluid inflatable counterweight and the drive shaft. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification