Patent ID: 8608727

Claim:
An implantable system for delivering fluid to a body including: a flexible first catheter; a flexible second catheter having an inner diameter sized to receive the first catheter, where one end of the first catheter is configured to be received within one end of the second catheter, wherein when the first and second catheters are connected, a portion of the first catheter is fitted within a portion of the second catheter to form an overlap area wherein each of the first and second catheters have constant wall thickness in the overlap area; a collar with a first opening configured to encircle the first catheter and a second opening configured to encircle the second catheter, wherein the first opening is smaller than the second opening, wherein the collar is configured to surround at least a first portion of the overlap area of the first and second catheters; and a clamp for applying a radially inward force to at least the portion of the collar that surrounds the overlap area to hold the first and second catheters together.