Harmonic flow catheter

• US 6,533,763 B1
• Filed: 12/06/1999
• Issued: 03/18/2003
• Est. Priority Date: 12/06/1999
• Status: Expired due to Fees

• Current Assignee: James A. Schneiter
• Original Assignee: James A. Schneiter
• Inventors: Schneiter, James A.
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US09/455,078
• Time in Patent Office: 1,198 Days
• Field of Search: 604/264, 604/253, 604/523, 604/524, 604/525, 604/526, 604/527, 604/528, 604/529, 604/530-539, 604/43, 604/265, 604/266, 604/267, 604/271, 604/274
• US Class Current: 604/264
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked

Abstract

A catheter for use in the withdrawal or delivery of a fluid to a patient. The catheter includes an elongate body having outer and inner walls and an axial passageway extending the length thereof. The body has a proximal end and a terminal end. A plurality of secondary ports are located adjacent the primary port. The secondary ports are spaced apart from the primary port and from each other. The secondary ports have a radial passageway that forms an angle greater than 20° with respect to an axis of the axial passageway.

Claims

1. A catheter for use in the withdrawal and/or delivery of a fluid to a patient, comprising:

a) an elongate tube body;

b) the tube body including a wall having inner and outer surfaces defining the thickness of the wall along the length of the body, the inner surface forming an axial passageway extending through the body in between a proximal end and a terminal end of the body;

c) the tube body having a primary port for at least one of the withdrawal or delivery of a fluid through the passageway; and

d) the tube Lady having a plurality of secondary ports extending through the wall at locations in the body spaced from the primary port and from each other, the ports having a diameter of substantially 0.50″

or larger;

e) the secondary ports having a passageway that forms an angle greater than 20° and

less than 70°

with respect to an axis of the axial passageway.

2. The catheter of claim 1 wherein at least one of the secondary ports form an angle within the range of 20°

-70°

with respect to the axis of the axial passageway.

3. The catheter of claim 2 wherein at least one of the secondary ports forms an angle substantially equal to 45°

with respect to the axis.

4. The catheter of claim 3 wherein there are six or fewer of the secondary ports.

5. The catheter of claim 4 wherein the secondary ports are substantially equally spaced apart along a length of the tube body.

6. The catheter of claim 5 wherein some of the secondary ports have a diameter greater than half of a diameter of the primary port.

7. The catheter of claim 6 wherein the secondary ports form a spirodactic pattern.

8. The catheter of claim 7 wherein the secondary ports include a first port and an end port, the first port being spaced adjacent to the primary port and having a diameter larger than a diameter of the end port.

9. The catheter of claim 2 wherein the catheter includes a tip having a funnel shape.

10. A catheter for use with at least one of the withdrawal and delivery of a fluid to a patient, comprising:

a) an elongate tube body having a primary port, the tube body having outer and inner surfaces, the inner surface defining an axial passageway extending a length thereof, and

b) a plurality of secondary ports in the body spaced apart from the primary port and from each other, at least some of the secondary ports having a harmonic fluid flow path.

11. The catheter of claim 10 wherein at least some of the secondary ports form an angle within the range of 20°

-70°

with respect to an axis of the axial passageway of the tube body.

12. The catheter of claim 11 wherein at least some of the secondary ports have different diameters.

13. The catheter of claim 12 wherein the secondary ports comprise six or fewer ports.

14. The catheter of claim 13 wherein the secondary ports are substantially equally spaced apart along said tube body.

15. The catheter of claim 14 wherein the catheter includes a laminar flow chamfer tip.

16. The catheter of claim 10 wherein the catheter includes a tip having a funnel shape.

17. A catheter system for use with at least one of the withdrawal and delivery of a fluid to a patient, comprising:

a) a first catheter and a second catheter;

b) the first and second catheters each having an elongate tube body with an axial passageway extending substantially the length thereof, the body of each catheter having a proximal end and a terminal end, and

c) a plurality of secondary ports in the body spaced apart from the primary port and from each other, the secondary ports each including a radial passageway that forms an angle greater than 20° and

less than 70°

with respect to an axis of the axial passageway, at least two of the ports having different diameters.

18. The catheter system of claim 17 wherein the secondary ports form an angle within the range of 20°

-70°

.

19. The catheter system of claim 18 wherein the secondary ports comprise six or fewer ports.

20. The catheter system of claim 19 wherein the secondary ports are substantially equally spaced apart along a length of the catheter.

21. The catheter system of claim 20 wherein the terminal end has a funnel-shaped tip.

22. The catheter system of claim 20 wherein the terminal end has a laminar flow chamfer tip.

23. The catheter system of claim 18 wherein the secondary ports form an angle substantially equal to 45°

.

24. The catheter system of claim 23 wherein the secondary ports include a first hole and a last hole and a plurality of intermediate holes, the first hole and the last hole being spaced angularly apart different than the intermediate holes.

25. The catheter system of claim 17 wherein the first hole and the last hole have different diameters.

26. A catheter for use in the withdrawal and/or delivery of a fluid to a patient, said catheter comprising:

an elongate body having outer and inner walls and an axial passageway extending the length thereof, the cylindrical body having a proximal end and a terminal end, the terminal end having a laminar flow tip and a primary port for the withdrawal or delivery of a fluid to a patient, and a plurality of secondary ports spaced apart from the primary port and from each other, at least some of the secondary ports having a passageway that forms an angle greater than 20° and

less than 70°

with respect to an axis of the axial passageway, substantially the entire passageway being formed at an angle greater than 20°

with respect to the axis of the axial passageway, the ports having a diameter of substantially 0.50″

or larger.

27. The catheter of claim 26 wherein the tip has an angle within the range of 20°

-80°

.

28. The catheter of claim 27 wherein the tip has an angle of substantially 75°

.

29. A catheter for use in at least one of the withdrawal and delivery of a fluid to a patient, said catheter comprising:

an elongate body having outer and inner walls and an axial passageway extending the length thereof, the body having a primary port and a proximal end and a terminal end, and a plurality of secondary ports spaced apart from the primary port and from each other, the axial passageway adjacent at least some of the secondary ports having a fluted shape.

30. The catheter of claim 29 wherein the axial passageway has a larger cross-sectional area adjacent the secondary ports.

31. The catheter of claim 30 wherein the inner walls include at least a portion that varies substantially continuously adjacent the secondary ports.

32. The catheter of claim 31 wherein the inner walls include at least a portion having a generally curved shape adjacent the secondary ports.

33. The catheter of claim 32 wherein the secondary ports are substantially equally spaced apart along a length of the catheter.

34. The catheter of claim 33 wherein the secondary ports form an angle within the range of 20°

-70°

with respect to an axis of the axial passageway.

35. A catheter for use in delivery of a fluid to a patient or withdrawal of a fluid from a patient, comprising:

a) an elongate tube body;

b) said tube body including a wall having inner and outer surfaces defining the thickness of the wall along the length of the body, said inner surface forming a passageway extending axially through the body in between a proximal end and a terminal end of the body;

c) said tube body having a primary port in its terminal end for delivery or withdrawal of a fluid through the passageway; and

d) said tube body having a plurality of secondary ports extending through said wall at locations in said body spaced from said primary port and from each other;

at least two of the ports having distinct diameters, and the ports having a diameter of substantially 0.50″

or larger with at least some of the secondary ports having a passageway that forms an angle greater than 20° and

less than 70°

with respect to an axis of the axial passageway.

36. The catheter of claim 35 wherein all the secondary ports have distinct diameters.

37. The catheter of claim 36 wherein the secondary port closest to the terminal end tip has the largest diameter.

38. The catheter of claim 37 wherein the secondary port closest to the proximal end has the smallest diameter.

39. The catheter of claim 38 wherein the secondary ports have a progressively smaller diameter proceeding from the secondary port closest to the terminal end to the secondary port closest to the proximal end.

40. The catheter of claim 39 wherein the secondary ports are substantially equally spaced apart along a length of the catheter.