Kink-resistant braided catheter with distal side holes
First Claim
1. A catheter section for infusion of fluids comprising:
- an elongate tubular member having an outer surface, a proximal end, a distal end, and a passageway defining an inner lumen extending between those proximal and distal ends, said elongate tubular member comprisinga.) a braid member extending along at least a portion of the distance between the proximal end and the distal end, said braid member being woven of a plurality of ribbons wound and woven to provide for interstices between said ribbons, at least a majority of which ribbons comprise a super-elastic alloy,b.) at least one polymeric inner lining member interior to said braid member defining said inner lumen, andc.) at least one polymeric outer covering member exterior to said braid member defining said outer surface, andwherein the elongate tubular member has a plurality of orifices extending from said inner lumen, through said interstices between said ribbons without contacting said ribbons, and to said outer surface.
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Accused Products
Abstract
This is a catheter section having a number of radially placed holes through the catheter section wall and a catheter assembly including that section. That catheter assembly may be used in accessing and treating a tissue target within the body, typically one which is accessible through the vascular system. Central to the catheter section is the presence of a braided metallic reinforcing member, typically of super-elastic alloy ribbon, situated in such a way to provide an exceptionally thin wall, controlled stiffness, high resistance to kinking, and complete recovery in vivo from kinking situations. The orifices in the section are optimally placed in the interstices between the turns of the braid. The braid may have a single pitch or may vary in pitch along the axis of the catheter or catheter section. The braided ribbon reinforcing member typically is placed between a flexible outer tubing member and an inner tubing member to produce a catheter section which is very flexible but highly kink resistant. The catheter sections made according to this invention may be used alone or in conjunction with other catheter sections either made using the concepts shown herein or made in other ways. The more proximal sections of the catheter assembly are often substantially stiffer than the more distal sections due to the presence of stiff polymeric tubing or metallic tubing or composited materials in the stiffer section.
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Citations
27 Claims
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1. A catheter section for infusion of fluids comprising:
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an elongate tubular member having an outer surface, a proximal end, a distal end, and a passageway defining an inner lumen extending between those proximal and distal ends, said elongate tubular member comprising a.) a braid member extending along at least a portion of the distance between the proximal end and the distal end, said braid member being woven of a plurality of ribbons wound and woven to provide for interstices between said ribbons, at least a majority of which ribbons comprise a super-elastic alloy, b.) at least one polymeric inner lining member interior to said braid member defining said inner lumen, and c.) at least one polymeric outer covering member exterior to said braid member defining said outer surface, and wherein the elongate tubular member has a plurality of orifices extending from said inner lumen, through said interstices between said ribbons without contacting said ribbons, and to said outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification