NEEDLE INJECTION CATHETER
First Claim
1. A needle injection catheter, comprising:
- a delivery tube, said delivery tube having a first end, a second end and a handle portion adjacent said first end;
a hypotube, said hypotube being sized and shaped to fit slidably within said delivery tube, having a proximal end, a distal end and at least three hollow needle portions connected to and extending outwardly at said distal end;
said needle portions, being formed of resilient material, curving outwardly from a central axis of said delivery tube and having distal ends shaped to penetrate tissue when said hypotube is urged toward said second end of said delivery tube;
a first sensor, said first sensor being disposed adjacent said second end of said delivery tube and electrically connected to a first notification device disposed adjacent said first end; and
at least one second sensor, said second sensor being disposed adjacent said end of said needle portion and electrically connected to a second notification device disposed adjacent said first end of said delivery tube.
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Accused Products
Abstract
A needle injection catheter includes a delivery tube that slidably surrounds a hypotube that has at least three hollow needle portions connected to and extending outwardly at its distal end. The needle portions are formed of resilient material and curve outwardly from the delivery tube. The ends of the needle portions are shaped to penetrate tissue when the hypotube is urged out of the delivery tube. A first sensor is located adjacent the distal end of the delivery tube and a second sensor is located adjacent the end of the needle portion. The sensors are electrically connected to first and second notification devices located adjacent a first end of the delivery tube. Radiopaque markers are affixed to the delivery tube to locate the tip using an enhanced imaging system. The markers are sized, shaped, positioned and of different densities to locate the tip both axially and radially within body structures.
42 Citations
16 Claims
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1. A needle injection catheter, comprising:
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a delivery tube, said delivery tube having a first end, a second end and a handle portion adjacent said first end; a hypotube, said hypotube being sized and shaped to fit slidably within said delivery tube, having a proximal end, a distal end and at least three hollow needle portions connected to and extending outwardly at said distal end; said needle portions, being formed of resilient material, curving outwardly from a central axis of said delivery tube and having distal ends shaped to penetrate tissue when said hypotube is urged toward said second end of said delivery tube; a first sensor, said first sensor being disposed adjacent said second end of said delivery tube and electrically connected to a first notification device disposed adjacent said first end; and at least one second sensor, said second sensor being disposed adjacent said end of said needle portion and electrically connected to a second notification device disposed adjacent said first end of said delivery tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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- 14. The needle injection catheter, as described in claim 14, wherein said radiopaque marker is disposed adjacent said second end of said delivery tube.
Specification