Patent ID: 11963862
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A  C | IPC A  C

Claim 3:
4. A system for cell implantation in a body, the system comprising:
a cell encapsulation device including:
one or more cell encapsulation layers, each of the cell encapsulation layers including:
a first membrane that is semipermeable;
a second membrane that is semipermeable;
a first plurality of weld lines, the second membrane attached to the first membrane by the first plurality of weld lines; the first membrane, the second membrane, and the first plurality of weld lines defining a chamber for encapsulating cells, the chamber including at least one access port;
a guide tube extending into the chamber from the at least one access port, the guide tube including a porous wall along at least a portion of its length;
at least one access catheter extending away from the chamber from the at least one access port, the at least one access catheter fluidly connected to the guide tube; and

a first external catheter capable of passing through the at least one access catheter and into the guide tube, the guide tube capable of guiding movement of the first external catheter within the chamber;
wherein the first external catheter includes a first lumen including a first lumen opening and a second lumen including a second lumen opening, the first lumen opening and the second lumen opening spaced apart from each other along the guide tube, the first lumen opening capable of dispensing a fluid through the porous wall of the guide tube and into the chamber and the second lumen opening capable of extracting the fluid from the chamber through the porous wall of the guide tube.