Two-piece retrievable catheter forming straight and T-shape configurations
First Claim
1. A connectable two piece retrievable catheter for insertion into the duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a first catheter piece, a second catheter piece releasably connectable to said first catheter piece, and connecting means attached to said second catheter piece for connecting said second catheter piece to said first catheter piece in different first and second configurations upon manipulation of said connecting means while said second catheter piece is positioned within said duct, said second catheter piece connected in longitudinal alignment with said first catheter piece when in said first configuration and in transverse relationship with said first catheter piece when in said second configuration, said second catheter piece having fluid communication means providing fluid communication between said duct and said first catheter piece when arranged in at least said second configuration.
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Accused Products
Abstract
A retrievable two piece catheter for percutaneous insertion into the common bile duct or similar vessel or canal of a patient is disclosed. The catheter is introduced as a single unit over a cannula and then formed in-situ within the duct into a T-tube configuration. Two sutures threaded through a main catheter are attached to a shorter distal auxiliary catheter, one in the center of the auxiliary catheter and one at an end thereof. After the two piece catheter has been inserted to the desired location and the cannula removed, the sutures are manipulated to maneuver the auxiliary catheter until it lies generally perpendicular to the elongated main catheter to thereby form the T-tube in fluid communication with each other. A suture-locking device provides self-retaining characteristics and the T-tube catheter can be easily retrieved, repositioned or exchanged. The T-tube catheter can be modified within a long distal limb to stent the Ampulla of Vater after balloon sphincteroplasty. A second type of two piece catheter with a self-retaining loop can be used as an internal biliary drainage catheter when treating distal common bile duct obstructions.
62 Citations
28 Claims
- 1. A connectable two piece retrievable catheter for insertion into the duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a first catheter piece, a second catheter piece releasably connectable to said first catheter piece, and connecting means attached to said second catheter piece for connecting said second catheter piece to said first catheter piece in different first and second configurations upon manipulation of said connecting means while said second catheter piece is positioned within said duct, said second catheter piece connected in longitudinal alignment with said first catheter piece when in said first configuration and in transverse relationship with said first catheter piece when in said second configuration, said second catheter piece having fluid communication means providing fluid communication between said duct and said first catheter piece when arranged in at least said second configuration.
- 13. A two piece retrievable catheter for insertion into the common bile duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a main catheter, an auxiliary catheter, and connecting means attached to said auxiliary catheter for connecting said auxiliary catheter to said main catheter upon manipulation of said connecting means, said manipulation of said connecting means arranging said auxiliary catheter between a first position in longitudinal alignment with said main character for insertion of said catheter into said common bile duct and a second position in angular relationship with said main catheter for fluid communication with said common bile duct, said auxiliary catheter including a hole along the length thereof for receiving an end of said main catheter when arranged in said angular relationship to maintain fluid communication therebetween.
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26. A connectable two piece retrievable catheter for insertion into the duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a first catheter piece, a second catheter piece releasably connectable to said first catheter piece connecting means attached to said second catheter piece for connecting said second catheter piece to said first catheter piece in different first and second configurations upon manipulation of said connecting means while said second catheter piece is positioned within said duct, said second catheter piece connected in longitudinal alignment with said first catheter piece when in said first configuration and in angular relationship with said first catheter piece when in said second configuration, said second catheter piece having fluid communication means providing fluid communication between said duct and said first catheter piece when arranged in at least said second configuration and means for altering the shape of a piece of said second catheter piece from a straight configuration to a loop configuration.
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27. A connectable two piece retrievable catheter for insertion into the duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a first catheter piece having an end opening, a second catheter piece releasably connectable to said first catheter piece, and connecting means attached to said second catheter piece for connecting said second catheter piece to said first catheter piece in different first and second configurations upon manipulation of said connecting means while said second catheter piece is positioned within said duct, said second catheter piece connected in longitudinal alignment with said first catheter piece when in said first configuration and in angular relationship with said first catheter piece when in said second configuration, said second catheter piece providing fluid communication between said duct and said first catheter piece when arranged in at least said second configuration, said second catheter piece including a hole along the length thereof for receiving said end opening of said first catheter piece when arranged in said angular relationship to maintain fluid communication therebetween.
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28. A connectable two piece retrievable catheter for insertion into the duct of a patient to provide a conduit from inside the duct to outside the body wall of the patient, said catheter comprising a hollow first catheter piece having an end opening, a hollow second catheter piece releasably connectable to said first catheter piece having a side opening, a pair of sutures extending through said hollow first catheter piece and connected to said hollow second catheter piece, said hollow second catheter piece connected in end-to-end longitudinal alignment with said hollow first catheter piece upon manipulation of one of said sutures and connected at an angle to said first hollow catheter piece by said end opening of said hollow first catheter piece being retrieved within said side opening of said second catheter piece upon manipulation of another of said sutures to maintain fluid communication therebetween.
Specification