Catheter hole having an inclined trailing edge

• US 10,549,068 B2
• Filed: 07/21/2016
• Issued: 02/04/2020
• Est. Priority Date: 04/22/2008
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Shevgoor, Siddarth K., Bihlmaier, Bryan Fred, McKinnon, Austin Jason, Adams, Chad M.
• Primary Examiner(s): Bosworth, Kami A
• Application Number:
  US15/216,301
• Publication Number:
  US 20160325072A1
• Time in Patent Office: 1,293 Days
• CPC Class Codes: A61M 2025/0073 Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow general flow characteristics A61M2206/10
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0015 Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

Abstract

A catheter having a catheter body with a lumen and a distal lumen opening. The catheter'"'"'s lumen extends through the catheter body along a longitudinal axis of the catheter body. A hole is formed through a wall of a distal portion of the catheter body. A portion of the proximal surface of the hole is inclined at an acute angle with respect to the longitudinal axis of the catheter body. The acute angle of the proximal hole surface opens proximally with respect to the catheter body.

Claims

1. A catheter, comprising:

a catheter body, wherein the catheter body includes a single lumen and a distal lumen opening, wherein the lumen extends through the catheter body along a longitudinal axis of the catheter body, wherein a distal end of the catheter body forms a tapered tip; and

a first hole formed through a portion of the tapered tip, wherein the first hole has a width that is less than an inner diameter of the single lumen, wherein the first hole includes a distal surface and a proximal surface that extend from an outer opening located no more than partially on the tapered tip to an inner opening of the catheter body, wherein the distal surface is inclined at an acute angle with respect to the longitudinal axis of the catheter body, wherein the acute angle opens distally with respect to the catheter body, wherein the proximal surface is parallel to the distal surface; and

a second hole disposed distal to the first hole and on the tapered tip, wherein the first hole and the second hole are arranged such that a fluid jet exiting the first hole collides with another fluid jet exiting the second hole.

2. The catheter of claim 1, wherein the acute angle of the distal surface of the hole is between about 20°

and about 90°

.

3. The catheter of claim 1, wherein a length of the outer opening is greater than a width of the outer opening, wherein the length is aligned with the longitudinal axis.

4. The catheter of claim 1, wherein a length of the outer opening is between 1.2 and 3.0 times the width of the outer opening.

5. The catheter of claim 1, wherein a length of the outer opening is between 1.3 and 2.5 times the width of the outer opening.

6. The catheter of claim 1, wherein a length of the outer opening is between 1.4 and 2.2 times the width of the outer opening.

7. The catheter of claim 1, wherein the outer opening includes a distal end, a proximal end, and two sides extending between the distal end of the outer opening and the proximal end of the outer opening, wherein the two sides are parallel.

8. The catheter of claim 7, wherein the distal end of the outer opening is rounded, wherein the proximal end of the outer opening is rounded.

9. The catheter of claim 8, wherein the outer opening is symmetric.

10. The catheter of claim 1, wherein the distal surface is substantially planar.

11. The catheter of claim 1, wherein the distal surface is constantly sloped.

12. The catheter of claim 1, wherein the distal surface is rounded.

13. The catheter of claim 1, wherein the outer opening is larger than the inner opening.

14. The catheter of claim 1, wherein the catheter is a peripheral catheter having a truncated length sufficient to access a peripheral vein of a patient and an outer diameter less than or equal to that of a twelve gauge catheter.

15. A catheter, comprising:

a catheter body, wherein the catheter body includes a single lumen and a distal lumen opening, wherein the lumen extends through the catheter body along a longitudinal axis of the catheter body, wherein a distal end of the catheter body forms a tapered tip;

a first hole formed through the catheter body wherein the first hole includes a distal surface and a proximal surface that extend from an outer opening of the first hole to an inner opening of the catheter body, wherein the distal surface is inclined at an acute angle with respect to the longitudinal axis of the catheter body, wherein the acute angle opens distally with respect to the catheter body, wherein the proximal surface is parallel to the distal surface; and

a second hole disposed distal to the first hole and on the tapered tip, wherein the first hole and the second hole are arranged such that a fluid jet exiting the first hole collides with another fluid jet exiting the second hole.

16. The catheter of claim 15, wherein the distal end of the outer opening is rounded, wherein the proximal end of the outer opening is rounded.

17. The catheter of claim 15, wherein the outer opening is symmetric.

18. The catheter of claim 15, wherein the outer opening of the first hole is located no more than partially on the tapered tip.