SYSTEMS AND METHODS FOR PERCUTANEOUS DRAINAGE
System for percutaneous drainage of a drainage site includes a catheter, a drain tube, a first pump, a flush tube, a second pump, and a controller. The catheter includes a drain lumen defined by a first portion of a catheter wall and a septum, and a flush lumen defined by a second portion of the catheter wall and the septum. The flush lumen is separated from the drain lumen by the septum. The septum has at least one septal hole disposed therein such that the drain lumen and the flush lumen are in communication via the at least one septal hole. The catheter wall has at least one wall hole disposed therein such that the drain lumen is in communication with the drainage site when the distal end portion of the catheter is placed within the drainage site.
1 . A method of percutaneous drainage of a drainage site, comprising:
inserting a catheter into the drainage site, the catheter including
a catheter wall extending from a proximal end portion of the catheter to a distal end portion of the catheter, the distal end portion of the catheter configured for placement within the drainage site;
a septum disposed within the catheter wall and extending from a proximal end portion of the catheter to a distal end portion of the catheter;
a drain lumen defined by a first portion of the catheter wall and the septum, and extending from the proximal end portion of the catheter to the distal end portion of the catheter; and
a flush lumen defined by a second portion of the catheter wall and the septum, and extending from the proximal end portion of the catheter to the distal end portion of the catheter, wherein the flush lumen is separated from the drain lumen by the septum;
wherein the septum has at least one septal hole disposed therein proximate to the distal end portion of the catheter such that the drain lumen and the flush lumen are in communication via the at least one septal hole; and
wherein the catheter wall has at least one wall hole disposed therein proximate to the distal end portion of the catheter such that the drain lumen is in communication with the drainage site when the distal end portion is placed within the drainage site;
withdrawing fluid from the drainage site via the drain lumen;
identifying an occlusion in the drain lumen and;
flushing a flush fluid through the flush lumen and into the drain lumen via the at least one septal hole and thereby removing the occlusion.
2 . The method of claim 1 , further comprising pausing withdrawing fluid from the drainage site via the drain lumen.
3 . The method of claim 2 , wherein pausing further comprises reversing a direction of fluid flow in the drain lumen.
4 . The method of claim 2 , further comprising resuming withdrawing fluid from the drainage site via the drain lumen
5 . The method of claim 2 , further comprising monitoring a rate of fluid withdrawal from the drainage site.
6 . The method of claim 5 , further comprising monitoring a rate of change of the rate of fluid withdrawal from the drainage site.
7 . The method of claim 6 , where identifying an occlusion in the drain lumen is based at least in part on one or more of the rate of fluid withdrawal from the drainage site and the rate of change of the rate of fluid withdrawal from the drainage site.
8 . The method of claim 2 , further comprising monitoring a pressure in the waste lumen.
9 . The method of claim 8 , further comprising monitoring a rate of change of the pressure in the waste lumen.
10 . The method of claim 9 , wherein identifying an occlusion in the drain lumen is based at least in part on one or more of the pressure in the waste lumen and a rate of change of the pressure in the waste lumen.