| 摘要 |
A catheter delivery system for delivering an elongated cannula-type catheter, normally including a cannula with an attachment on the tip thereof, to a body of a mammal and for controlling the movement of the cannula in the mammal's body includes both a cannula-control fitting and an enlarged hollow cannula delivery housing. The cannula control fitting has at least three openings therein. A cannula to be delivered to the mammal's body extends through the first and second openings of the cannula-control fitting and pressurized fluid can be inserted into the third opening. A sealing clamp is at the first opening for selectively, sealingly clamping the cannula-control fitting to the cannula. Thus, when the sealing clamp is tightened, fluid introduced at the third opening leaves the cannula-control fitting at the second opening. The hollow cannula delivery housing is attached to the third opening and has a relatively large cavity for receiving gathered portions of the cannula therein. The cannula delivery housing is attached to the third outlet of the cannula-control fitting at an inlet thereof and is attached to a mammal's blood vessel at an outlet thereof. The method of use is that the sealing clamp is tightened and the cannula is gathered in the cannula delivery housing. Pressurized fluid is introduced into the cannula-control fitting to drive the gathered cannula and its attachment from the cannula delivery housing into the mammal's blood vessel. Once all of the gathered cannula has been delivered to the mammal's body the sealing clamp is released and the proximal end of the cannula is controlled manually. |
