Catheter curvature braces and methods of using same

• US 9,901,707 B2
• Filed: 05/23/2012
• Issued: 02/27/2018
• Est. Priority Date: 05/23/2012
• Status: Active Grant

• Current Assignee: Integra LifeSciences Switzerland Sàrl
• Original Assignee: Integra LifeSciences Switzerland Sàrl
• Inventors: Dextradeur, Alan
• Primary Examiner(s): Scherbel, Todd J
• Assistant Examiner(s): Townsend, Guy K
• Application Number:
  US13/478,487
• Publication Number:
  US 20130317410A1
• Time in Patent Office: 2,106 Days
• Field of Search: 604524, 604528
• CPC Class Codes: A61M 25/0041 pre-formed, e.g. specially adapted to fit with the anatomy of body channels urethral catheters A61F2/04
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves

Abstract

A catheter curvature brace, catheter assembly and method for managing fluid in a patient, the brace being attachable to a distal portion of a shaft of a catheter and having an elongated frame with a distal end and a proximal end. The frame is formed with at least one curve in a relaxed curved configuration. At least two coupling elements are connected to the frame, each coupling element configured to engage an outer surface of the catheter. At least the frame is formed of an elastic, biocompatible material capable of being straightened by a force and then returning to the relaxed curved configuration after the force is removed, thereby bending the catheter to substantially conform to the relaxed curved configuration.

Claims

1. A fluid management catheter assembly suitable for implantation into a ventricle in a brain of a patient, comprising:

a catheter with an elongated shaft having a distal end and a proximal end, the shaft defining at least one lumen extending substantially therethrough, the shaft further defining a plurality of fluid management openings along a distal portion of the shaft, the fluid management openings being in fluid communication with the lumen; and

a catheter curvature brace attached to the distal portion of the shaft, the brace having an elongated frame with a distal end and a proximal end, the frame being formed with at least one pre-defined curve in a relaxed curved configuration, and at least two coupling elements connected to the frame, each coupling element configured to engage an outer surface of the catheter; and

at least the frame being formed of an elastic, biocompatible material capable of being straightened by a force and then returning to the pre-defined relaxed curved configuration after the force is removed, thereby bending the catheter to substantially conform to the pre-defined relaxed curved configuration.

2. The catheter brace of claim 1 wherein the elastic, biocompatible material is a nitinol alloy.

3. The catheter brace of claim 1 wherein at least one of the coupling elements is formed as a substantially circular ring.

4. The catheter brace of claim 1 wherein at least one of the coupling elements is formed as a continuation of the frame.

5. A fluid management kit, comprising:

a catheter with an elongated shaft having a distal end and a proximal end, the shaft defining at least one lumen extending substantially therethrough, the shaft further defining a plurality of fluid management openings along a distal portion of the shaft, the fluid management openings being in fluid communication with the lumen; and

at least first and second catheter curvature braces attachable to the distal portion of the shaft, each brace having an elongated frame with a distal end and a proximal end, the frame being formed with at least one pre-defined curve in a relaxed curved configuration, at least two coupling elements connected to the frame, each coupling element configured to engage an outer surface of the catheter, and at least the frame being formed of an elastic, biocompatible material capable of being straightened by a force and then returning to the pre-defined relaxed curved configuration after the force is removed, thereby bending the catheter to substantially conform to the pre-defined relaxed curved configuration; and

wherein the at least one curve of the first catheter brace is different from the at least one curve of the second brace.

6. The catheter brace of claim 5 wherein the elastic, biocompatible material is a nitinol alloy.

7. The catheter brace of claim 5 wherein at least one of the coupling elements is formed as a substantially circular ring.