Needle catheter with an angled distal tip lumen
First Claim
Patent Images
1. An agent delivery needle catheter configured for injecting an agent at an injection site in a wall of a patient'"'"'s body cavity, comprising:
- a) an elongated catheter shaft having a proximal end, a distal end, and a needle-through lumen therein extending from the proximal end to a needle-through port in a distal end face of the catheter, and the distal end face is at least in part substantially perpendicular to a longitudinal axis of a distal section of the shaft such that the distal end face and needle-through lumen port therein are configured to be pushed against the wall of the patient'"'"'s body cavity, and the needle-through lumen has an angled distal portion which extends to the needle-through port at an angle greater than 0 degrees and less than 90 degrees relative to the longitudinal axis; and
b) a hollow needle slidably disposed in the needle-through lumen of the shaft, having a piercing distal tip and a lumen in fluid communication with a port in the piercing distal tip, and having a retracted configuration in which the piercing distal tip of the needle is in the needle-through lumen of the shaft, and an extended configuration in which the piercing distal tip extends distally out the needle-through port, such that the catheter is configured to form an angled injection pathway in the wall of the patient'"'"'s body cavity by directing the needle into the wall of the patient'"'"'s body cavity at the angle of the angled distal portion of the needle-through lumen with the distal end face against the wall of the patient'"'"'s body cavity at the injection site.
1 Assignment
0 Petitions
Accused Products
Abstract
A needle catheter configured for injecting an agent into a wall of a patient'"'"'s body cavity, which directs a needle from the distal tip of the catheter into the wall of the body cavity at an angle relative to the axis of the shaft. The resulting angled injection pathway improves the retention of the agent in the body cavity wall, while keeping a distal section of the catheter substantially perpendicular to the body cavity wall for optimal push against the tissue at the injection site.
-
Citations
17 Claims
-
1. An agent delivery needle catheter configured for injecting an agent at an injection site in a wall of a patient'"'"'s body cavity, comprising:
-
a) an elongated catheter shaft having a proximal end, a distal end, and a needle-through lumen therein extending from the proximal end to a needle-through port in a distal end face of the catheter, and the distal end face is at least in part substantially perpendicular to a longitudinal axis of a distal section of the shaft such that the distal end face and needle-through lumen port therein are configured to be pushed against the wall of the patient'"'"'s body cavity, and the needle-through lumen has an angled distal portion which extends to the needle-through port at an angle greater than 0 degrees and less than 90 degrees relative to the longitudinal axis; and b) a hollow needle slidably disposed in the needle-through lumen of the shaft, having a piercing distal tip and a lumen in fluid communication with a port in the piercing distal tip, and having a retracted configuration in which the piercing distal tip of the needle is in the needle-through lumen of the shaft, and an extended configuration in which the piercing distal tip extends distally out the needle-through port, such that the catheter is configured to form an angled injection pathway in the wall of the patient'"'"'s body cavity by directing the needle into the wall of the patient'"'"'s body cavity at the angle of the angled distal portion of the needle-through lumen with the distal end face against the wall of the patient'"'"'s body cavity at the injection site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of delivering an agent to an injection site in a wall of a patient'"'"'s body cavity, comprising:
-
a) introducing within the patient'"'"'s vasculature a catheter comprising an elongated catheter shaft having a proximal end, a distal end, and a needle-through lumen extending from the proximal end to a needle-through port in a distal end face of the catheter, and the distal end face is at least in part substantially perpendicular to a longitudinal axis of a distal section of the shaft such that the distal end face and needle-through lumen port therein are configured to be pushed against the wall of the patient'"'"'s body cavity, and the needle-through lumen has an angled distal portion which extends to the needle-through port at an angle greater than 0 degrees and less than 90 degrees relative to the longitudinal axis, and a hollow needle slidably disposed in the needle-through lumen of the shaft having a piercing distal tip, a lumen in fluid communication with a port in the piercing distal tip, and a retracted configuration in which the piercing distal tip is within the needle-through lumen of the catheter shaft, and percutaneously advancing the introduced catheter with the needle in the retracted configuration to position the distal end of the catheter in the patient'"'"'s body cavity; b) pushing the distal end face against the patient'"'"'s body cavity wall at the injection site, and advancing the needle to an extended configuration in which the piercing distal tip of the needle extends distally out the port with the distal end face against the body cavity wall, such that the needle extends into the body cavity wall at the angle of the angled portion of the needle-through lumen and thereby forms an angled injection pathway in the patient'"'"'s body cavity wall; and c) causing agent from an agent source in fluid communication with the proximal end of the needle to flow through the needle lumen, to thereby deliver the agent into the angled injection pathway in the patient'"'"'s body cavity wall. - View Dependent Claims (13, 14, 15, 16, 17)
-
Specification