Method and apparatus for performing needle guided interventions
An apparatus and method for performing needle guided interventions and especially needle guided dilations of tissue to create a therapeutic conduit between two luminal organs or structures. The device is particularly useful for creation of an artificial lumen between two hollow body organs using the working lumen of an endoscope.
1. An apparatus which is configured to be inserted into a hollow body organ through a working channel of an endoscope having a central axis, the apparatus comprising: a handle member which houses a catheter device actuator and a needle actuator,
the handle member having a connecting member configured to detachably affix the handle member to the proximal end of the endoscope to prevent relative movement therebetween,
the catheter device actuator coupled to a proximal end of an elongated catheter device, the catheter device having a distal end, an inflation lumen, and a through lumen,
the needle actuator having a locking mechanism configured to fix the location of the needle actuator relative to the handle member and the endoscope,
a dilation balloon located near the distal end of the catheter device and in fluid communication with the inflation lumen to allow inflation of the balloon,
and an elongated needle positioned in the through lumen of the catheter device, the needle having a proximal end and a distal end, with the needle actuator coupled to the proximal end of the needle,
wherein the needle actuator is configured to move relative to the handle member and the endoscope to slidably move the needle in the through lumen of the catheter device,
wherein the catheter device actuator is configured to move relative to the handle member, the endoscope and the needle to slidably move the catheter device in the working channel of the endoscope,
wherein the needle actuator locking mechanism may be locked to allow the catheter to be advanced or retracted over the needle while the needle and the endoscope remain stationary,
and wherein the needle may be advanced and retracted independently from the catheter.
2. The apparatus of claim 1 , wherein the catheter device actuator is capable of translating the position of the catheter device along the central axis of the endoscope.
3. The apparatus of claim 2 , wherein the catheter device actuator moves the catheter device between 2 cm and 10 cm relative to the endoscope.
4. The apparatus of claim 2 , wherein the catheter device actuator can move the catheter device independently of the needle along the central axis of the endoscope.
5. The apparatus of claim 4 , wherein the catheter device actuator has a locking member to fix the position of the catheter device relative to the endoscope.
6. The apparatus of claim 1 , wherein the needle actuator is capable of translating the position of the needle along the central axis of the endoscope.
7. The apparatus of claim 6 , wherein the needle actuator moves the needle between 2 cm and 10 cm relative to the endoscope.
8. The apparatus of claim 6 , wherein the needle actuator can move the needle independently of the catheter device along the central axis of the endoscope.
9. The apparatus of claim 1 , wherein the catheter device has at least one radiopaque marker band positioned near the balloon; such marker band visible when viewed with a fluoroscope or x-ray.
10. The apparatus of claim 1 , wherein the needle is hollow and a removable elongated stylet is positioned inside a through lumen of the needle.