Catheter with elongated side holes

• US 5,403,291 A
• Filed: 08/02/1993
• Issued: 04/04/1995
• Est. Priority Date: 08/02/1993
• Status: Expired due to Term

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Quinton Instrument Co. (Cardica Incorporated)
• Inventors: Abrahamson, Timothy A.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): TSOSIE, BRYAN
• Application Number:
  US08/101,520
• Time in Patent Office: 610 Days
• Field of Search: 604/43, 604/264, 604/280-282, 128/658
• US Class Current: 604/523
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked

Abstract

An elongate catheter having one or more lumens therein and at least one lumen in flow communication with a side opening in the sidewall of the catheter wherein the side opening includes first and second sides and generally parallel distal and proximal ends thereon to form a generally slot-shaped side opening, and the opening is oriented diagonally with respect to the longitudinal axis of the catheter.

Claims

1. An elongate catheter comprising:

an elongate body portion formed by a circumferential sidewall and having a longitudinal axis and distal and proximal end portions thereon;

a first lumen in said body portion extending between said proximal end portion and a side opening formed in said sidewall of said body portion;

said side opening including first and second sides thereon wherein said first side is formed proximally of said second side on said sidewall, a plurality of spaced apart ends extending between said first and second sides such that at least one of said first and second sides is oriented diagonally with respect to said longitudinal axis of said body portion; and

wherein said body portion includes a plurality of lumens therein formed by a septum extending longitudinally along said body portion, and a second lumen extends between an opening on said distal end portion and said proximal end portion.

2. The catheter of claim 1 wherein said ends form distally and proximally positioned ends on said side opening between said first and second sides such that said side opening is generally slot-shaped.

3. The catheter of claim 2 wherein said distally and proximally positioned ends are oriented generally parallel to each other.

4. The catheter of claim 2 wherein said body portion includes a plurality of lumens therein formed by a septum extending therethrough, and said first and second sides of said side opening are generally parallel to each other.

5. The catheter of claim 1 wherein at least one of said lumens is generally D-shaped in cross section and said D-shaped lumen is in flow communication with said side opening along said distal end portion of said body portion.

6. The catheter of claim 5 wherein said septum intersects said sidewall of said body portion in at least first and second locations and said first end of said side opening is generally adjacent to said first location.

7. The catheter of claim 6 wherein said second end is generally adjacent to said second location.

8. The catheter of claim 1 wherein said septum is formed of first and second wall portions, and said second wall portion includes first and second ends which intersect said sidewall of said body portion.

9. The catheter of claim 8 wherein said side opening communicates with at least one of said lumens and said first end of said side opening is adjacent to said first wall portion, and said second end of said side opening is adjacent to said second wall portion of said septum.

10. The catheter of claim 8 wherein said side opening communicates with at least one of said lumens, and said end walls of said side opening are adjacent said first and second ends of said second wall portion.

11. The catheter of claim 8 wherein said second wall portion of said septum is generally semicircularly shaped.

12. The catheter of claim 8 wherein said second wall portion of said septum is generally bent.

13. The catheter of claim 1 wherein said spaced apart ends include distal and proximal wall portions thereon, and the intersection of said distal wall portion and second side of said side opening is located distally of the intersection of said proximal wall portion and said first side of said side opening.

14. The catheter of claim 1 wherein said spaced apart ends include distal and proximal wall portions thereon, and the intersection of said distal wall portion and said first side of said side opening is located proximally of the intersection of said proximal wall portion and said second side of said side opening.

15. The catheter of claim 1 wherein said spaced apart ends include distal and proximal wall portions thereon, and the intersection of said distal wall portion and said first side of said side opening is located distally of the intersection of said proximal wall portion and said first side of said side opening.

16. The catheter of claim 1 wherein said spaced apart ends include distal and proximal wall portions thereon, and the angle formed by the intersection of said first side of said side opening and said distal wall portion is greater than the angle formed by the intersection of said first side of said side opening and said proximal wall portion.

17. The catheter of claim 1 wherein said spaced apart sidewalls include distal and proximal wall portions thereon, and the angle formed by the intersection of said second side of said side opening and said distal wall portion is less than the angle formed by the intersection of said second side of said side opening and said proximal wall portion.

18. The catheter of claim 1 wherein said side opening extends greater than 40 degrees around the circumference of said body portion.

19. The catheter of claim 1 wherein said first and second sides of said side opening are not perpendicular to said longitudinal axis of said body portion.

20. The catheter of claim 1 wherein said ends of said side opening are generally parallel to said longitudinal axis of said body portion.

21. An elongate catheter comprising:

an elongate body portion formed by a circumferential sidewall having a longitudinal axis and distal and proximal end portions;

a plurality of lumens in said body portion and at least one of said lumens extending between said proximal end portion and a generally elongate side opening formed in said sidewall of said body portion; and

said side opening including distal and proximal side portions and at least one of said distal and proximal side portions are oriented diagonally with respect to said longitudinal axis of said body portion.

22. The catheter of claim 21 wherein said side opening further includes first and second ends thereon, and said first and second ends each intersect said distal and proximal side portions to form a generally slot-shaped side opening.

23. The catheter of claim 21 further including a distal opening on the distal end of said distal end portion wherein said distal opening is in flow communication with a first lumen of said body portion and said side opening is in flow communication with a second lumen of said body portion.

24. The catheter of claim 23 further including a third lumen in said body portion and said third lumen is in flow communication with a further side opening in said sidewall of said body portion.

25. The catheter of claim 21 wherein said distal and proximal side portions of said side opening are oriented generally parallel to each other.

26. An elongate catheter comprising:

an elongate body portion formed by a circumferential sidewall having a longitudinal axis and distal and proximal end portions;

a plurality of lumens in said body portion and at least one of said lumens extending between said proximal end portion of said body portion and a generally elongate side opening formed in said sidewall of said body portion; and

said side opening including distal and proximal ends and first and second sides wherein said first side is formed proximally of said second side of said side opening on said sidewall, and said distal and proximal ends are oriented generally parallel to each other, and said side opening is oriented generally diagonally to said longitudinal axis of said body portion.

27. A method of inserting a catheter into a patient comprising:

forming an elongate catheter having a side opening therein wherein the side opening is oriented generally diagonal with respect to the longitudinal axis and includes distally and proximally located ends thereon, and

inserting the catheter into an incision of the patient with a rotational movement along the orientation of the side opening.

28. The method of claim 27 wherein the catheter is rotated so that the distally located end of the side opening contacts the tissue prior to the proximally located end of the side opening so that the catheter is threaded into the incision.