Multiple-lumen catheter
First Claim
1. A blood purification system comprising:
- a dialysis system for purifying a patient'"'"'s blood; and
a multiple-lumen catheter coupled to said dialysis system comprising an elongated cylindrical tube having an internal diametral septurn extending along the length thereof, said septum and the walls of said tube forming at least three longitudinal lumens, first and second of said lumens having substantially semi-circular transverse cross-sections occupying the major portion of the transverse cross section of the interior of said tube, and a third lumen having a small transverse cross-section and located at the intersection of one diametral end of said septum with said tube, between a pair of adjacent comers of said first and second lumens.
0 Assignments
0 Petitions
Accused Products
Abstract
A blood purification system comprised of a dialysis system for purifying a patient'"'"'s blood and a dual-lumen catheter coupled to the dialysis system. The dual-lumen catheter is comprised of an elongated cylindrical tube having an internal diametral septum extending along the length thereof. The septum and the walls of the elongated cylindrical tube form at least three longitudinal lumens, the first and second of which have substantially semi-circular transverse cross-sections occupying the major portion of the transverse cross section of the interior of the tube, and the third lumen has a small transverse cross-section located at the intersection of one diametral end of the septum with the tube, between a pair of adjacent corners of the first and second lumens.
-
Citations
43 Claims
-
1. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising an elongated cylindrical tube having an internal diametral septurn extending along the length thereof, said septum and the walls of said tube forming at least three longitudinal lumens, first and second of said lumens having substantially semi-circular transverse cross-sections occupying the major portion of the transverse cross section of the interior of said tube, and a third lumen having a small transverse cross-section and located at the intersection of one diametral end of said septum with said tube, between a pair of adjacent comers of said first and second lumens. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising an elongated generally cylindrical body, and a septum extending diametrically across the interior of said body and along the length thereof to divide said interior into at least three longitudinal lumens, a major portion of the diametral width of said septum comprising a flat strip which forms two substantially semi-cylindrical, longitudinal lumens on opposite sides thereof, one transverse end of said septum being bifurcated and cooperating with the contiguous portion of the side wall of said body to form a small longitudinal lumen between adjacent corners of said semi-cylindrical lumens. - View Dependent Claims (8)
-
-
9. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising a unitary elongated flexible tube having a circular transverse cross-section and an internal diametral divider extending along the length thereof to divide the interior of said tube into identical first and second lumens having generally semi-circular transverse cross sections, and a third lumen formed by a bifurcation at one diametral end of said divider and the adjoining portion of the tube side wall, said third lumen having a generally circular transverse cross-section, the distal ends of said first, second and third lumens being longitudinally spaced from each other, diversion means attached to the proximal end of said catheter and forming three separate fluid passageways each of which is in fluid communication with one of said lumens, and three extension tubes attached to the proximal end of said diversion means, each of said tubes being in fluid communication with one of said passageways. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising a first elongated tube having proximal and distal ends and a substantially circular transverse cross-section, a second elongated tube having a substantially circular transverse cross-section and a smaller diameter than the radius of said first tube and extending along an inside wall of said first tube and joined thereto, an internal divider extending from said second tube across the remainder of the interior of said first tube, said divider extending along a diameter of said first tube and a projected diameter of said second tube, the combination of said first and second tubes and said divider forming a pair of longitudinal lumens of generally semi-circular transverse cross-section on opposite sides of said divider, and a smaller third longitudinal lumen of circular transverse cross-section defined by said second tube, the distal ends of the three lumens being longitudinally spaced from each other, and the proximal ends of all three lumens being located at the proximal end of said tube. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
-
25. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising a first elongated, unitary, flexible, cylindrical tube having a side wall which forms an integral, co-tangential second tube forming a generally circular lumen that has a diameter smaller than the radius of the first tube, and an axial, integral, internal, flat divider separating the interior of said first tube into second and third elongated lumens each of which has a transverse cross section that is generally D-shaped with a dented corner, all three of said lumens having separate openings at the distal ends thereof so that the three lumens are in independent fluid communication with the interior of a vein, said second lumen extending beyond the distal opening of the said first lumen to the end of the said first tube while said third lumen ends on a circumferential opening that is axially spaced from the end of said first tube, the proximal end of the said first tube having means to diverge said three lumens from each other and communicating them with respective extension tubes having female luer ends. - View Dependent Claims (26, 27, 29, 30)
-
-
31. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising a unitary elongated flexible tube having a circular transverse cross section and containing an eccentric, codiametral, tangential lumen of generally circular cross-section with a diameter smaller than the radius of said tube, and a diametral divider that divides the remainder of the tube into two identical, substantially semicircular lumens, the proximal ends of all the said lumens communicating via diversion means with respective extension tubes, the distal ends of all the said lumens being open to communicate with the interior of a vein, one of the semicircular lumens extending to the end of the tube and the other semicircular lumen opening on its own circumference proximal to the end of the tube, the smaller circular lumen opening by a circumferential aperture intermediate the distal openings of the two semicircular lumens, the distal end of the said catheter being adapted for insertion into a vein. - View Dependent Claims (28, 32, 33, 34, 35, 36)
-
-
37. A blood purification system comprising:
-
a dialysis system for purifying a patient'"'"'s blood; and a multiple-lumen catheter coupled to said dialysis system comprising a flexible elongated tube, having proximal and distal ends, the tube enclosing, in its interior, a smaller circular tube in circumferential contact with the main tube and having a common diametral plane with said main tube and an axial septum contacting the exterior of the smaller circular tube and interior of the catheter, said septum extending in the said common diametral plane to form two independent longitudinal lumens which are larger than the lumen formed by said smaller circular tube, the first larger lumen extending to and opening at the distal end of the tube, and the second larger lumen opening proximally of the distal end of the tube on the surface of the catheter, the smaller circular lumen communicating with the exterior of the catheter intermediate the distal openings of said first and said second lumens, the proximal ends of each lumen being connected to and communicating with respective extension tubes via flow diversion means, the distal end of the catheter being adapted for insertion into a vein. - View Dependent Claims (38, 39, 40, 41, 42, 43)
-
Specification