Dual needle delivery system
An apparatus for delivering devices. The apparatus comprises a catheter with an elongated shaft having a first lumen and a second lumen extending therethrough. The apparatus further comprises a distal section with a lumen in communication with a port in a distal end of the catheter and with the first lumen and the second lumen. The first lumen is configured for a first device and the second lumen is configured for a second device to be disposed therein. The apparatus further comprises a proximal adapter coupled to the elongated shaft with a first port in communication with the first lumen and a second port in communication with the second lumen.
1. A method comprising:
advancing a catheter body having a first needle and a second needle to a treatment site, the catheter body having a proximal section, a distal section, and at least a first lumen and a second lumen extending therethrough, wherein the first needle is inserted within the first lumen, the second needle is inserted within the second lumen; and
at the treatment site, sequentially extending the first needle and the second needle from a distal tip of the catheter body, wherein only one of the first needle or the second needle is extended at a time, wherein coupling to the catheter body is a control handle including a first control mechanism configured to actuate the first needle and a second control mechanism configured to actuate the second needle, and wherein included at the distal section of the catheter body is a delivery path configured to enable separate introduction of the first needle and the second needle one at a time.
2. The method of claim 1 wherein the first needle and the second needle exit at a distal port of the catheter body in said sequential extending.
3. The method of claim 2 wherein the first needle and the second needle deliver agents to the same treatment site.
4. The method of claim 3 further comprising:
filling the first needle with a first agent; and
filling the second needle with a second agent.
5. The method of claim 4 further comprising:
injecting the first agent at the treatment site; and
sequentially injecting the second agent at the treatment site after the first agent is injected.
6. The method of claim 1 , wherein an inner dimension of the delivery path is smaller than an outer dimension of the first needle and the second needle combined.
7. The method of claim 1 , wherein the delivery path is too small to accommodate both the first needle and the second needle at one time.