Catheter assembly including a multi-lumen configuration

• US 9,579,485 B2
• Filed: 11/21/2014
• Issued: 02/28/2017
• Est. Priority Date: 11/01/2007
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Oborn, Kelli D., Moehle, Ryan T., Barron, William R.
• Primary Examiner(s): DEAK, LESLIE R
• Application Number:
  US14/549,941
• Publication Number:
  US 20150088100A1
• Time in Patent Office: 830 Days
• Field of Search: 604/4.01, 604/5.01, 604/6.16, 604/507, 604/508, 604/523, 604/611
• US Class Current: 1/1
• CPC Class Codes: A61M 1/3653 Interfaces between patient blood circulation and extra-corporal blood circuit
• CPC Class Codes: A61M 1/3655 Arterio-venous shunts or fistulae
• CPC Class Codes: A61M 1/3661 for haemodialysis
• CPC Class Codes: A61M 2025/0008 having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• 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 2025/0081 Soft tip
• CPC Class Codes: A61M 2025/0286 anchored in the skin by suture or other skin penetrating devices
• CPC Class Codes: A61M 2202/0021 removed from and reintroduced into the body, e.g. after treatment
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/001 Forming the tip of a catheter, e.g. bevelling process, join or taper
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• 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 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• 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
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10
• CPC Class Codes: A61M 25/02 : Holding devices, e.g. on the body
• CPC Class Codes: A61M 25/09 : Guide wires
• CPC Class Codes: A61M 5/007 : for contrast media
• CPC Class Codes: B29C 2793/009 : after shaping
• CPC Class Codes: B29C 48/0022 : combined with cutting
• CPC Class Codes: B29C 48/11 : comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
• CPC Class Codes: B29C 48/12 : Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29K 2075/00 : Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2031/7542 : Catheters

Abstract

A catheter assembly for use in accessing a vasculature of a patient is disclosed. In one embodiment, the catheter assembly includes a catheter body that includes a flattened oval outer surface and defines first and second lumens. The catheter body defines a distal tip region that includes a venous lateral opening that is in fluid communication with the first lumen and includes a distal-facing portion. The distal tip region further includes an arterial lateral opening that is in fluid communication with the second lumen, includes a distal-facing portion, and is substantially un-staggered with respect to the venous lateral opening. A distal end opening is in fluid communication with a power injectable third lumen. In another embodiment, the first and second lumens each generally include a reniform cross-sectional shape. In yet another embodiment, a dual-lumen catheter includes first and second lumens that each define a modified ellipse cross-sectional shape.

Claims

1. A catheter assembly, comprising:

an elongate catheter tube defining first, second, and third lumens, wherein;

the first and second lumens include a modified reniform cross-sectional shape;

the third lumen includes a substantially circular cross-sectional shape; and

the catheter tube includes;

a first lateral opening in fluid communication with the first lumen, the first lateral opening defined by an angled cross cut including a first cut and a second cut opposite of the first cut, each of the first cut and the second cut having a long axis at an oblique angle with a longitudinal axis of the elongate catheter tube; and

a second lateral opening in fluid communication with the second lumen, the second lateral opening defined by an angled cross cut.

2. The catheter assembly as defined in claim 1, wherein the first and second lumens are mirror images of one another about a center line of the catheter tube.

3. The catheter assembly as defined in claim 1, wherein a cross section of an outer surface of the catheter tube defines a flattened oval shape.

4. The catheter assembly as defined in claim 1, wherein the third lumen is configured to withstand pressures associated with power injection of a fluid therethrough.

5. The catheter assembly as defined in claim 4, wherein the catheter tube further includes a distal end opening in fluid communication with the third lumen.

6. The catheter assembly as defined in claim 5, wherein the catheter tube includes a tapered distal region, the distal end opening disposed at a distal tip of the tapered distal region.

7. The catheter assembly as defined in claim 6, wherein the first and second lateral openings are positioned in an un-staggered position on a distal portion of the catheter tube.

8. The catheter assembly as defined in claim 7, wherein a portion of the first lateral opening and the second lateral opening is disposed on the tapered distal region.

9. The catheter assembly as defined in claim 1, wherein a septum separates the first lumen, the second lumen, and the third lumen, the septum including an hourglass-shaped portion.

10. The catheter assembly as defined in claim 1, wherein each of the first and second lumens cross-sectionally includes a concavity, the concavity disposed adjacent the third lumen.

11. The catheter assembly as defined in claim 10, wherein each of the first and second lumens cross-sectionally includes first and second corners, the concavity interposed in an offset configuration between the first and second corners.

12. A multi-lumen configuration for a catheter tube, an outer surface of the catheter tube defining a flattened oval cross sectional shape with opposing flat sides, the multi-lumen configuration including:

a first lumen; and

a second lumen substantially identically shaped to the first lumen, the first and second lumens each defining a cross sectional shape, including;

an arcuate portion;

rounded first and second corners disposed at either end of the arcuate portion; and

a concavity opposite the arcuate portion and interposed between the first and second corners.

13. The multi-lumen configuration as defined in claim 12, wherein the concavity is disposed in an offset configuration with respect to the first and second corners.

14. The multi-lumen configuration as defined in claim 12, wherein the first and second lumens each generally define a reniform cross-sectional shape.

15. The multi-lumen configuration as defined in claim 12, wherein the catheter tube further includes a substantially round third lumen.

16. The multi-lumen configuration as defined in claim 15, wherein the first, second, and third lumens are separated by a septum, the septum including a unified portion and a bifurcated portion, the third lumen being bounded by the bifurcated portion.

17. The multi-lumen configuration as defined in claim 16, wherein the septum is centered on a center line of the catheter tube such that the first and second lumens are disposed in a mirror-image configuration about the center line.

18. The multi-lumen configuration as defined in claim 12, wherein the catheter tube further includes an first lateral opening in fluid communication with the first lumen, a second lateral opening in fluid communication with the second lumen, and a plurality of side holes in fluid communication with one of the first and second lumens.

19. The multi-lumen configuration as defined in claim 12, wherein the catheter tube further includes a tapered atraumatic distal tip region.

20. A catheter assembly, comprising:

an elongate catheter tube defining first and second lumens, wherein;

an outer surface of the catheter tube defines a flattened oval cross-sectional shape with opposing flat sides; and

the first and second lumens are separated by a septum and are substantially identically shaped, the first and second lumens each defining a cross-sectional shape including;

a minor arc portion adjacent the septum;

a major arc portion adjacent an outer wall of the catheter tube; and

rounded first and second corners interposed between the minor arc portion and the major arc portion.

21. The catheter assembly as defined in claim 20, wherein the septum includes an hourglass cross-sectional shape.

22. The catheter assembly as defined in claim 20, wherein the first and second lumens each cross-sectionally define a modified ellipse shape.

23. The catheter assembly as defined in claim 20, wherein a cross-sectional thickness of the outer wall adjacent the major arc portion is substantially constant.

24. The catheter assembly as defined in claim 20, wherein the catheter tube includes:

a first lateral opening in fluid communication with the first lumen, the first lateral opening defined by an angled cross cut; and

a second lateral opening in fluid communication with the second lumen, the second lateral opening defined by an angled cross cut.