Loop coronary catheter
First Claim
1. A catheter for coronary angiography comprisinga tubular flexible body portion,a tubular flexible tip portion on one end of the body portion communicating therewith,said tip portion having a loop formed therein with the plane of the loop being transverse to the asxis of the body poriton,said loop having at least one arcuate portion with outwardly directed peripheral opening means formed therein,said periperhal opening meansextending longitudinally in the peripheral wall of the one arcuate portion for a distance at leat two times the width of the opening means for directing a fan-like flow of contrast medium toward a selected sector of an aorta wall, andsaid loop having adjacent arcuate portions devoid of peripheral openings on both sides of the one arcuate portion and extending for angular distances each greater than the angular distance of the one arcuate portion.
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Accused Products
Abstract
A coronary catheter has a transverse loop at the distal end of the catheter with two spaced, outwardly directed groups of openings centered to align with blood flow to respective coronary ostia when the catheter is in a maximum radius of curvature in the aorta. Each group of openings is spaced over a region of the outer peripheral wall of the loop so as to direct a fan-like pattern of contrast medium toward the aorta wall at the situs of the corresponding coronary ostium or directly upstream therefrom.
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Citations
25 Claims
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1. A catheter for coronary angiography comprising
a tubular flexible body portion, a tubular flexible tip portion on one end of the body portion communicating therewith, said tip portion having a loop formed therein with the plane of the loop being transverse to the asxis of the body poriton, said loop having at least one arcuate portion with outwardly directed peripheral opening means formed therein, said periperhal opening meansextending longitudinally in the peripheral wall of the one arcuate portion for a distance at leat two times the width of the opening means for directing a fan-like flow of contrast medium toward a selected sector of an aorta wall, and said loop having adjacent arcuate portions devoid of peripheral openings on both sides of the one arcuate portion and extending for angular distances each greater than the angular distance of the one arcuate portion.
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19. A catheter for coronary angiography comprising
a tubular flexible body portion, a tubular flexible tip portion on one end of the body portion and communicating therewith, said tip portion having a loop formed therein with the plane of the loop being transverse to the axis of the body portion and with the center of the loop being offset relative to the axis of the body portion, said loop consisting of four arcuate portions of about 90° - ,
two outwardly directed opening means formed in the peripheral wall of two corresponding opposite arcuate portions of the four arcuate portions with the other two opposite arcuate portions being free of any peripheral opening, and said two outwardly directed opening means being formed in the outer peripheral wall at positions selected relative to the axis of the body portion so that said two opening means align with blood flows to a respective normally positioned coronary ostia when the body portion is in a maximum radius of curvature within the aorta. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification