Shielded tip catheter

• US 20060064072A1
• Filed: 11/07/2005
• Published: 03/23/2006
• Est. Priority Date: 08/23/2002
• Status: Active Grant

• Current Assignee: Medical Components, Inc.
• Original Assignee: Medical Components, Inc.
• Inventors: Gately, Nicholas V., Arnold, W. Perry
• Granted Patent: US 7,717,898 B2
• Time in Patent Office: Days
• US Class Current: 604/500
• 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 25/0029 characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• 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 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked

Abstract

A multilumen catheter assembly (100) including an elongated body (108) having a proximal end (102) and a distal end (104) and a first lumen (110) having a sidewall (118) extending between the proximal end and the distal end, a first distal opening (151) disposed at the distal end, and a first guide wire opening (152) disposed proximally of the distal end and co-planar with the sidewall. The assembly also includes a second lumen (112) connected to the sidewall and extending from the proximal end toward the distal end, proximally of the distal end. The second lumen (112) includes a second opening (155) extending obliquely away from the sidewall distally toward the first distal opening (114) and a second guide wire opening (155) disposed proximally of the second opening (155) and in a plane generally parallel to the sidewall. A method of inserting the catheter into a vessel is also disclosed.

Claims

1. A multilumen catheter assembly comprising:

an elongated body having a proximal end and a distal end;

a first lumen having;

a sidewall extending between the proximal end and the distal end;

a first distal opening disposed at the distal end; and

a second lumen connected to the sidewall and extending between the proximal end and a second distal end, proximal of the distal end, wherein the second lumen includes;

a second opening extending obliquely away from the sidewall distally toward the first opening; and

wherein the second distal end concludes in a tip section that is undercut along the first lumen, thereby facilitating prevention of occlusion by the vessel wall

16. The multilumen catheter assembly according to claim 1, wherein the undercut beneath the second distal end tip section is elongated.

17. The multilumen catheter assembly according to claim 1, wherein the second distal end tip section is elongated to enable deflection toward the first lumen during patient insertion.

18. The multilumen catheter assembly according to claim 17, wherein the second distal end tip section is tapered and includes a sidewall portion facing away from the first lumen that is angled slightly distally.

19. The multilumen catheter assembly according to claim 17, wherein the first lumen, distally of the second lumen distal tip section, includes a transition portion that transitions the cross-section of the first lumen from a generally noncircular cross section shape to a generally circular cross section shape, and includes a tapered wall angled slightly proximally toward the second lumen distal tip section.

2-15. -15. (canceled)