Packaging and fluid filling of ultrasound imaging catheters

1. An imaging catheter assembly, comprising:

an imaging catheter comprising an imaging catheter tip; and

an imaging catheter handle separate from the imaging catheter and coupled to the imaging catheter via a flexible shaft, wherein the imaging catheter handle comprises:

a fluid reservoir connected to the imaging catheter and configured to deliver fluid through a proximal end of the imaging catheter tip, wherein the proximal end of the imaging catheter tip is an end of the imaging catheter tip that is closer to the imaging catheter handle than an opposite distal end;

an actuatable release mechanism integrated into the imaging catheter handle and configured to cause delivery of the fluid to the imaging catheter tip when actuated with respect to the imaging catheter handle, wherein the actuatable release mechanism comprises a mechanism for preventing actuation of the actuatable release mechanism unless the imaging catheter tip is pointing downward;

a plunger configured to displace fluid from the fluid reservoir; and

a biasing member configured to exert a predetermined force against the plunger when the actuatable release mechanism is actuated with respect to the imaging catheter handle, thereby releasing the biasing member to bias against the plunger.

2. The imaging catheter assembly of claim 1 , comprising a box configured to hold the imaging catheter, the imaging catheter handle, and the flexible shaft, wherein the box is adapted to hold the imaging catheter tip in a downward orientation when the actuatable release mechanism is actuated.

3. A packaging assembly, comprising:

an imaging catheter comprising an imaging catheter tip and a fill mechanism; and

a box configured to hold the imaging catheter tip in a fill orientation to facilitate filling the imaging catheter tip with acoustic coupling fluid upon activation of the fill mechanism, wherein the fill mechanism is configured to be activated only when the imaging catheter tip is held in the fill orientation.

4. The packaging assembly of claim 3 , wherein the box comprises rounded edges which prevent the box from being placed in an orientation other than the fill orientation.

5. The packaging assembly of claim 3 , wherein the box comprises at least one label indicating an orientation of the box which orients the imaging catheter tip in the fill orientation.

6. The packaging assembly of claim 3 , wherein the fill mechanism is configured to be activated while the imaging catheter tip is held by the box.

7. The packaging assembly of claim 3 , wherein the box comprises a receptacle region to hold the imaging catheter tip in the fill orientation.

8. The packaging assembly of claim 3 , wherein the box holds the imaging catheter tip in the fill orientation without being attached to a device external to the box.

9. A packaging assembly, comprising:

an imaging catheter comprising an imaging catheter tip and a fill mechanism; and

a box configured to hold the imaging catheter tip in a fill orientation to facilitate filling the imaging catheter tip with acoustic coupling fluid upon activation of the fill mechanism, wherein the box comprises rounded edges which prevent the box from being placed in an orientation other than the fill orientation.

10. The packaging assembly of claim 9 , wherein the box comprises at least one label indicating an orientation of the box which orients the imaging catheter tip in the fill orientation.

11. The packaging assembly of claim 9 , wherein the fill mechanism is configured to be activated only when the imaging catheter tip is held in the fill orientation.

12. The packaging assembly of claim 9 , wherein the fill mechanism is configured to be activated while the imaging catheter tip is held by the box.

13. The packaging assembly of claim 9 , wherein the box comprises a receptacle region to hold the imaging catheter tip in the fill orientation.

14. The packaging assembly of claim 9 , wherein the box holds the imaging catheter tip in the fill orientation without being attached to a device external to the box.