SYMMETRICAL TIP ACUTE CATHETER

• US 20170100560A1
• Filed: 12/22/2016
• Published: 04/13/2017
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: Mozarc Medical US LLC
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Bellisario, Marc, Thomashey, David
• Granted Patent: US 11,413,426 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 1/3661 for haemodialysis
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• 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 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0071 Multiple separate lumens multiple separate lumens throughout the catheter A61M25/0026

Abstract

A medical catheter assembly includes a catheter tip coupled to a distal end of an elongate catheter member and is symmetric about a plane defined by a septum of the elongate catheter member. The catheter tip defines first and second lumens, and the catheter tip defines first and second openings in the distal portion of the catheter tip. Each opening of the catheter tip is defined by a respective side surface of the catheter tip. Each opening is in fluid communication with a respective one of the first and second lumens of the catheter tip and with a respective one of a pair of lumens defined by the elongate catheter member. The distance between upper and lower surfaces of the catheter tip decreases from a distal end of the proximal portion toward a closed distal end of the catheter tip.

Claims

1-15. -15. (canceled)

16. A medical catheter comprising:

an elongate catheter body defining a pair of lumens, a longitudinal axis, and a pair of diametrically opposed side openings, each side opening in fluid communication with a respective lumen of the pair of lumens, wherein each side opening has a proximal end and a distal end, and a shape that tapers proximally from the distal end to the respective proximal end.

17. The medical catheter of claim 16, wherein the elongate catheter body comprises a septum defining at least a portion of each of the pair of lumens, the septum extending parallel to the longitudinal axis, wherein the elongate catheter body is symmetrical about a plane defined by the septum.

18. The medical catheter of claim 16, wherein the shape is a substantially teardrop shape that tapers from the proximal end to the respective distal end.

19. The medical catheter of claim 18, wherein the proximal and distal ends of each of the side openings are rounded.

20. The medical catheter of claim 19, wherein the proximal end of each side opening has a smaller radius of curvature than the distal end of the respective side opening.

21. The medical catheter of claim 16, wherein the distal end of each side opening has a generally flat shape.

22. The medical catheter of claim 21, wherein the proximal end of each opening is rounded.

23. A medical catheter comprising:

an elongate catheter body defining a pair of lumens, a longitudinal axis, a transverse axis orthogonal to the longitudinal axis, and a pair of diametrically opposed side openings, each side opening in fluid communication with a respective lumen of the pair of lumens, wherein each side opening has a shape comprising an arcuate distal portion having a first diameter and an arcuate proximal portion having a second diameter, the arcuate proximal and distal portions intersecting along the transverse axis.

24. The medical catheter of claim 23, wherein the second diameter is smaller than the first diameter.

25. The medical catheter of claim 23, wherein the first diameter is substantially equal to the second diameter

26. The medical catheter of claim 23, wherein each side opening is symmetric about the transverse axis of the elongate catheter body.

27. A medical catheter comprising:

an elongate catheter body defining a pair of lumens, a longitudinal axis, and a pair of diametrically opposed side openings, each side opening in fluid communication with a respective lumen of the pair of lumens, wherein each side opening is substantially L-shaped and comprises a distal portion extending in a transverse relation to the longitudinal axis and a proximal portion extending parallel to the longitudinal axis, the proximal portion intersecting the distal portion.