Carotid artery angiolasty guiding system and method
First Claim
1. A method of performing angioplasty on a patient'"'"'s selected carotid artery comprising the steps of;
- a) placing an elongated positioning catheter having a lumen and proximal and distal end portions within a patient'"'"'s body so that the distal end of the positioning catheter occupies a position within the patient'"'"'s aorta next to the patient'"'"'s selected carotid artery;
b) wherein in step "a" the distal end of the positioning catheter has a curved portion and a distal tip;
c) rotating and positioning the catheter until the distal tip enters the carotid artery;
d) advancing a guide wire having a free end portion through the lumen of the positioning catheter from the proximal end to the distal end until the free end portion of the wire reaches the distal tip of the positioning catheter and the selected carotid artery;
e) advancing a second catheter with a lumen over the positioning catheter, the second catheter having proximal and distal end portions, the distal end portion including a central section and a pair of opposed sections, with two bends forming respective connections between the central section and the opposed sections, the first bend having a smaller curvature and the second bend having a larger curvature; and
f) wherein in step "e" the second curvature includes the central section and an opposed section that together form an obtuse angle.
5 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for performing an angioplasty of a patient'"'"'s carotid artery includes a placement of a first elongated positioning catheter having a lumen and proximal and distal end portions within a patient'"'"'s body so that the distal end portion of the positioning catheter occupies a position within the patient'"'"'s aorta next to the patient'"'"'s selected carotid artery. The distal end portion of the positioning catheter is curved with a radius of curvature of about 2 cm, for example, and provides a soft distal tip. Using fluoroscopy, a user can manipulate, rotate, and position the positioning catheter until the distal tip enters the carotid artery. A guide wire is then advanced through the lumen of the positioning catheter until the free end portion of the wire reaches the distal tip of the positioning catheter and enters the selected carotid artery. A second catheter is advanced over the positioning catheter, the second catheter being a guiding catheter having a distal end portion. The distal end portion of the guiding catheter is shaped to provide two curved sections or bends. The distal end portion of the guiding catheter includes a central section and a pair of opposed sections. The two bends or curved portions form respective connections between the central section and each of the opposed sections.
57 Citations
17 Claims
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1. A method of performing angioplasty on a patient'"'"'s selected carotid artery comprising the steps of;
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a) placing an elongated positioning catheter having a lumen and proximal and distal end portions within a patient'"'"'s body so that the distal end of the positioning catheter occupies a position within the patient'"'"'s aorta next to the patient'"'"'s selected carotid artery; b) wherein in step "a" the distal end of the positioning catheter has a curved portion and a distal tip; c) rotating and positioning the catheter until the distal tip enters the carotid artery; d) advancing a guide wire having a free end portion through the lumen of the positioning catheter from the proximal end to the distal end until the free end portion of the wire reaches the distal tip of the positioning catheter and the selected carotid artery; e) advancing a second catheter with a lumen over the positioning catheter, the second catheter having proximal and distal end portions, the distal end portion including a central section and a pair of opposed sections, with two bends forming respective connections between the central section and the opposed sections, the first bend having a smaller curvature and the second bend having a larger curvature; and f) wherein in step "e" the second curvature includes the central section and an opposed section that together form an obtuse angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification