Multi-lumen catheter with separate distal tips

• US 9,387,304 B2
• Filed: 07/10/2014
• Issued: 07/12/2016
• Est. Priority Date: 02/21/2003
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Rome, Guy, Zawacki, John A., Powers, Kelly B., Evans, John G.
• Primary Examiner(s): Hayman, Imani
• Assistant Examiner(s): PATEL, SHEFALI DILIP
• Application Number:
  US14/328,541
• Publication Number:
  US 20140330220A1
• Time in Patent Office: 733 Days
• 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 1/3659 Cannulae pertaining to extracorporeal circulation
• 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 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• 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 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0074 Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable

Abstract

A multi-lumen catheter including a generally cylindrical body enclosing a first and second lumen separated by a generally planar septum. A first and second tip section extend from a distal end of the body. The first and second tip section may each include a generally planar surface. The second tip section may include a first segment extending from the distal end of the body to a transition segment and a second segment extending from the transition segment to a distal end of the second tip section.

Claims

1. A multi-lumen catheter, comprising:

a generally cylindrical body enclosing a first and second lumen separated by a generally planar septum;

a first tip section extending from a distal end of the body, the first tip section comprising;

a generally planar surface extending from the septum;

a distal end surface oblique to the generally planar surface; and

an opening in the distal end surface; and

a second tip section comprising;

a proximal segment having a proximal cross-sectional area and a generally planar surface extending from the distal end of the body;

a transition segment extending from the proximal segment; and

a distal segment extending from the transition segment, the distal segment having a distal cross-sectional area greater than the proximal cross-sectional area.

2. The multi-lumen catheter according to claim 1, wherein the distal end surface of the first tip section includes rounded corners.

3. The multi-lumen catheter according to claim 1, wherein a distal end of the second tip section includes a beveled surface forming an angle in a range of about 25 degrees and about 75 degrees with a longitudinal axis of the second tip section.

4. The multi-lumen catheter according to claim 1, wherein the planar surface of the first tip section includes a first planar surface opening adjacent the distal end of the body.

5. The multi-lumen catheter according to claim 4, wherein the planar surface of the first tip section includes one or more planar surface openings distal to the first planar surface opening.

6. The multi-lumen catheter according to claim 1, wherein a medial portion of the body is curved.