Catheter for Localized Drug Delivery and/or Electrical Stimulation
First Claim
Patent Images
1. A catheter, comprising:
- a tubing portion having at least first and second lumens formed therein, wherein at least a portion of an internal surface of the first lumen is formed from a fluoropolymer; and
an end fitting coupled to a distal end of the tubing portion and having an internal fluid chamber and at least one fluid exit region, whereinthe first and second lumens are in fluid communication with the fluid chamber,at least a portion of a surface of the fluid chamber is formed from a fluoropolymer, andthe fluid exit region is positioned so as to place the fluid chamber in fluid communication with a region external to the catheter.
1 Assignment
0 Petitions
Accused Products
Abstract
A drug-compatible, biocompatible, drug-delivery catheter can include multi-lumen tubing attached to an end fitting, with the end fitting having an internal fluid chamber and a fluid exit region. The catheter can also include multi-lumen tubing having one or more needles attached at a distal end.
180 Citations
21 Claims
-
1. A catheter, comprising:
-
a tubing portion having at least first and second lumens formed therein, wherein at least a portion of an internal surface of the first lumen is formed from a fluoropolymer; and an end fitting coupled to a distal end of the tubing portion and having an internal fluid chamber and at least one fluid exit region, wherein the first and second lumens are in fluid communication with the fluid chamber, at least a portion of a surface of the fluid chamber is formed from a fluoropolymer, and the fluid exit region is positioned so as to place the fluid chamber in fluid communication with a region external to the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A catheter, comprising:
-
a tubing portion having at least first and second lumens formed therein, wherein at least a portion of an internal surface of the first lumen is formed from a fluoropolymer; and a injection structure extending from a distal end of the tubing portion, the injection structure including first and second fluid passages, wherein the first fluid passage is in fluid communication with the first lumen and has an opening configured to deliver fluid from the first lumen to a region external to the catheter, and the second fluid passage is in fluid communication with the second lumen and has an opening configured to deliver fluid from the region external to the catheter to the second lumen. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A method, comprising:
-
placing an end fitting of a catheter into a round window niche of a human, wherein the catheter includes a tubing portion having at least first and second lumens formed therein, at least a portion of an internal surface of the first lumen is formed from a fluoropolymer, the end fitting is coupled to a distal end of the tubing portion and includes an internal fluid chamber and at least one fluid exit region, the first and second lumens are in fluid communication with the fluid chamber, at least a portion of a surface of the fluid chamber is formed from a fluoropolymer, and the fluid exit region is positioned so as to place the fluid chamber in fluid communication with a region external to the catheter; delivering a drug-laden fluid through the first lumen to the internal fluid chamber; and permitting excess drug-laden fluid to escape from the internal fluid chamber via the second lumen. - View Dependent Claims (16, 17, 18)
-
-
19. A method, comprising:
-
placing an end fitting of a catheter into a cochlea, an auditory nerve, an optic nerve, an eye, a pituitary gland, an adrenal gland, a thymus gland, an ovary, a testis, a heart, a pancreas, a liver, a spleen, a brain or a spinal cord of a human, wherein the catheter includes a tubing portion having at least first and second lumens formed therein, at least a portion of an internal surface of the first lumen is formed from a fluoropolymer, the end fitting is coupled to a distal end of the tubing portion and includes an internal fluid chamber and at least one fluid exit region, the first and second lumens are in fluid communication with the fluid chamber, at least a portion of a surface of the fluid chamber is formed from a fluoropolymer, and the fluid exit region is positioned so as to place the fluid chamber in fluid communication with a region external to the catheter; delivering a drug-laden fluid through the first lumen to the internal fluid chamber; and permitting excess drug-laden fluid to escape from the internal fluid chamber via the second lumen. - View Dependent Claims (20)
-
-
21. A method, comprising:
-
placing a distal end of a catheter into a round window niche of a human so as to pierce the round window membrane with first and second injection needles, wherein the catheter includes a tubing portion having at least first and second lumens formed therein, at least a portion of an internal surface of the first lumen is formed from a fluoropolymer, the first injection needle extends from a distal end of the tubing portion, an internal passage of the first injection needle is in fluid communication with the first lumen, the second injection needle extends from the distal end of the tubing portion, an internal passage of the second injection needle is in fluid communication with the second lumen, and the catheter includes at least one wire in electrical communication with the first injection needle; delivering a drug-laden fluid through the first lumen to the internal fluid chamber; permitting excess drug-laden fluid to escape from the internal fluid chamber via the second lumen; and delivering electrical stimulation to ear tissue of the human through the at least one wire.
-
Specification