Drainage catheter having an expandable retention member

• US 7,338,466 B2
• Filed: 07/11/2003
• Issued: 03/04/2008
• Est. Priority Date: 07/16/2002
• Status: Expired due to Fees

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Hart, Charles C., Pinedjian, Raffi S., Pravong, Boun
• Primary Examiner(s): Zalukaeva; Tatyana
• Assistant Examiner(s): Bogart; Michael G
• Application Number:
  US10/521,368
• Publication Number:
  US 20050177102A1
• Time in Patent Office: 1,698 Days
• Field of Search: 604/95.03, 604/95.04, 604/96.01, 604/97.01, 604/97.02, 604/97.03, 604/98.01, 604/98.02, 604/99.01, 604/99.02, 604/99.03, 604/99.04, 604/100.01, 604/100.02, 604/101.03, 604/101.04, 604/101.05, 604/102.02, 604/102.03, 604/103, 604/103.01, 604/103.02, 604/103.03, 604/103.04, 604/103.05, 604/103.06, 604/103.07, 604/103.08, 604/103.09, 604/103.1, 604/103.11, 604/103.12, 604/103.13, 604/103.14, 604914-921
• US Class Current: 604/93.01
• CPC Class Codes: A61M 2025/0063 having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
• CPC Class Codes: A61M 2210/1085 Bladder
• CPC Class Codes: A61M 2210/1096 Male
• CPC Class Codes: A61M 25/0017 specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A drainage catheter is adapted to drain fluid from the body cavity through a body conduit and includes an elongate tube and a retention member disposed at the distal end of the elongate tube. The retention member is adapted for movement between a low-profile state facilitating insertion of the catheter and a high-profile state facilitating retention of the catheter in its operative position. A woven mesh forms at least a portion of one of the tube and the retention member. The woven mesh can be formed of filaments heat-settable so that the catheter automatically moves to the high-profile state. Insertion of the catheter can be facilitated using a stylet which can be removed after insertion to permit the catheter to automatically return to its high-profile state.

Claims

1. A drainage catheter adapted to drain fluid from a body cavity through a body conduit, comprising:

an elongate tube having a proximal end and a distal end, and being sized and configured for insertion into the body cavity;

an expandable retention member disposed at the distal end of the elongate tube and being adapted for movement between a low-profile state facilitating insertion of the catheter into the body cavity, and an expanded high-profile state facilitating retention of the distal end of the catheter in the body cavity;

a stylet removably insertable into the elongate tube to facilitate insertion and placement of the catheter in the body cavity; and

a ratcheting member having a suture attached thereto and a collapsible backend for snap-action when pulled through a collar disposed within the elongate tube, said ratcheting member slides along the elongate tube pulling on said suture until said retention member is deployed.

2. The drainage catheter of claim 1, wherein the retention member is formed from a plurality of woven filaments, the woven filaments being permeable by the fluid to facilitate drainage of the fluid from the body cavity.

3. The drainage catheter of claim 2, wherein the woven filaments form a mesh.

4. The drainage catheter of claim 1, wherein said stylet further comprises an elongate body and a handle disposed along the elongate body.

5. The drainage catheter of claim 4, wherein said elongate tube further comprises a hub sized and configured to receive said handle of said inserting stylet.

6. The drainage catheter of claim 1, wherein said stylet is formed from one of a plastic tube, a solid rod or a malleable material incorporated within plastic.

7. The drainage catheter of claim 4, wherein said handle is removably connected to said elongate body.

8. The drainage catheter of claim 7, wherein said elongate body is one of a straight or a curved body stylet.

9. The drainage catheter of claim 1, wherein said stylet further comprises a plurality of extensions for operatively attaching an end of the ratcheting member to pull said ratcheting member through the collar to deploy said retention member.