Catheter aperture with related structures and method
First Claim
1. A catheter, comprising an elongate shaft, said elongate shaft comprising:
- a proximal end;
a distal end;
a first lumen extending through at least a portion of the shaft and defined by a wall;
an aperture through the wall, open to the first lumen;
said aperture disposed between the proximal and distal ends;
an outer circumference; and
stiffening structure disposed near the aperture for preventing undesired flexure.
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Accused Products
Abstract
An elongate catheter shaft having a side port aperture through a side wall of the catheter shaft between proximal and distal ends of the shaft. The side port aperture is open to a lumen. Embodiments of the present invention are directed to stiffening structure disposed in the immediate vicinity of the side port aperture. The stiffening structures may be disposed on or be continuous with, for example, an exterior surface, an interior lumenal surface, within a wall of the catheter shaft, or some combination thereof. The stiffening structures described herein are directed to biasing the catheter shaft in the region of a side port aperture in a straight or curved configuration that resists undesired flexure in the region of the side port aperture.
124 Citations
31 Claims
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1. A catheter, comprising an elongate shaft, said elongate shaft comprising:
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a proximal end;
a distal end;
a first lumen extending through at least a portion of the shaft and defined by a wall;
an aperture through the wall, open to the first lumen;
said aperture disposed between the proximal and distal ends;
an outer circumference; and
stiffening structure disposed near the aperture for preventing undesired flexure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26)
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27. A method of forming a reinforced aperture in a shaft of a catheter for promoting a desired directional passage of a wire guide comprising the steps of:
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(A) providing a catheter having a shaft comprising;
a first lumen defining an interior surface, a proximal end, a distal end, an outer circumference, and an exterior surface;
(B) cutting the exterior surface near the distal end to form an aperture open from the exterior surface to the first lumen; and
(C) providing a reinforcing band immediately adjacent the aperture. - View Dependent Claims (20, 28)
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29. A method for creating an aperture in a catheter shaft comprising the steps of:
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providing a catheter shaft having at least one lumen defined by a wall of the shaft;
providing a cutting bit having a cutting diameter that is not greater than an outside diameter of the catheter shaft; and
directing a portion of the bit through the wall to form an aperture open into the lumen. - View Dependent Claims (30, 31)
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Specification