US 11,779,729 B2
Catheter and method of engaging catheter
Marcelo Guimaraes, Mount Pleasant, SC (US); Ryo Okamura, Fujinomiya (JP); and Mitsuteru Yasunaga, Fujinomiya (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 9, 2020, as Appl. No. 17/116,390.
Application 17/116,390 is a continuation of application No. 16/357,626, filed on Mar. 19, 2019, granted, now 10,946,170.
Prior Publication US 2021/0085919 A1, Mar. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 25/00 (2006.01); A61M 25/01 (2006.01)
CPC A61M 25/0041 (2013.01) [A61M 25/0141 (2013.01); A61M 25/008 (2013.01); A61M 25/0054 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A catheter configured to be introduced into an arm of a patient and advanced to a hepatic artery of the patient, the catheter comprising
a tubular body that includes a lumen extending from a proximal end of the tubular body to a distal end of the tubular body;
the tubular body being comprised of a substantially linear main body portion and a shape portion that is bent so that an entirety of the shape portion is positioned in substantially the same plane;
the shape portion comprising:
a first bent portion disposed on a distal side of the main body portion, the first bent portion being bent toward one side and defining a first angle;
a second bent portion disposed on a distal side of the first bent portion, the second bent portion being bent toward a side that is the same as the side to which the first bent portion is bent, the second bent portion defining a second angle;
a third bent portion disposed on a distal side of the second bent portion, the third bent portion being bent toward a side that is opposite the side to which the first and second bent portions are bent, the third bent portion defining a third angle;
a most distal end portion disposed on a distal side of the third bent portion;
the first bent portion including a smallest radius of curvature portion that possesses a smallest radius of curvature relative to a remainder of the first bent portion, the second bent portion including a smallest radius of curvature portion that possesses a smallest radius of curvature relative to a remainder of the second bent portion, the radius of curvature of the smallest radius of curvature portion of the first bent portion being larger than the radius of curvature of the smallest radius of curvature portion of the second bent portion;
the most distal end portion being configured to be positioned in the common hepatic artery while the first bent portion is in contact with an aorta wall on an opposite side from a celiac artery and while the second bent portion is in contact with a blood vessel wall of the celiac artery;
an axis passing through a center line of the main body portion is referred to as a first axis;
the portion of the second bent portion having the smallest radius of curvature includes opposite ends and a second bending point representing a center point between the opposite ends;
an axis passing through the second bending point and a first intermediate point positioned at a distal end of the main body portion is a fifth axis; and
a first inclination angle between the fifth axis and the first axis is 34° to 63°.