Composite catheter stabilizing devices, methods of making the same and catheter extracting device

• US 6,033,382 A
• Filed: 05/13/1998
• Issued: 03/07/2000
• Est. Priority Date: 03/06/1996
• Status: Expired due to Term

• Current Assignee: Medical Components, Inc.
• Original Assignee: Medical Components, Inc.
• Inventors: Basta, Michael Ignazio
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): RODRIGUEZ, CRIS LOIREN
• Application Number:
  US09/076,900
• Time in Patent Office: 664 Days
• Field of Search: 604/175, 604/265, 604/93, 604/174, 604/264, 604/269, 604/280, 604/43, 604/96, 604/282, 604/101, 604/102, 604/27, 604/28, 604/29, 604/104, 604/523
• US Class Current: 604/104
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence

Abstract

A composite catheter stabilizing device, a catheter assembly including such a stabilizing device and a device for removing a catheter assembly are provided. The stabilizing device includes a cuff having a first and second edge which is configured to be positioned around a catheter. The device further includes a first and second end piece. The first and second end pieces have internal surfaces defining tubular openings which extend through the end pieces. The first and second end pieces are tapered from first sides which abut the edges of the cuff to second sides and the second sides of the end pieces are configured for receiving a catheter in facing engagement. The device for removing a catheter assembly includes a handle and a head having an external gripping surface which is sized for inserting into a lumen of a catheter assembly having a tissue ingrowth cuff for gripping an internal surface of the catheter assembly within the cuff and dislodging the cuff from surrounding tissue.

Claims

1. A composite catheter stabilizing device useful for anchoring catheter to subcutaneous tissue, comprising:

(a) a cuff having a first edge and a second edge, the cuff being configured for positioning around a catheter;

(b) a first end piece having an internal surface defining a tubular opening extending therethrough and an external surface tapered from a first side abutting the first edge of the cuff toward a second side, the first side having a generally annular cross section and a diameter which is substantially the same as an outer diameter of the cuff when the cuff is positioned around a catheter; and

(c) a second end piece having an internal surface defining a tubular opening extending therethrough and an external surface tapered from a first side abutting the second edge of the cuff toward a second side, the first side having a generally annular-cross section and a diameter which is substantially the same as an outer diameter of the cuff when the cuff is positioned around a catheter, wherein the second sides of the first and second end pieces are configured for receiving a catheter in facing engagement, and the first and second end pieces are configured to conform to an external surface of a catheter in facing engagement for facilitating smooth movement of a catheter through subcutaneous tissue, wherein an internal diameter of the composite catheter stabilizing device is dimensioned to be substantially the same as an external diameter of a catheter for enabling the composite catheter stabilizing device to be affixed to and to conform to an external surface of the catheter and to be capable of moving through subcutaneous tissue without detaching from a catheter in order to subcutaneously anchor a catheter in subcutaneous tissue.

2. The device according to claim 1, wherein the first and second end pieces are frustoconical and the openings in the first and second end pieces are cylindrically shaped.

3. The device according to claim 2, wherein the internal surfaces of the first and second end pieces are configured for being flush with the catheter when the catheter is within the cylindrically shaped openings.

4. The device according to claim 1, wherein the cuff comprises a biocompatible fabric capable of tissue ingrowth.

5. The device according to claim 1, wherein the first and second end pieces comprise a silicone material.

6. A composite catheter stabilizing device useful for anchoring a catheter to subcutaneous tissue, comprising:

(a) a unitary base having an internal surface defining a tubular opening extending therethrough and having a first end piece, a second end piece, and an annular central portion positioned between the first and second end pieces, wherein the first end piece has an external surface tapered from a first side having an outer diameter toward a second side, the second end piece has an external surface tapered from a first side having an outer diameter to a second side and the internal surface configured for conforming to an external surface of a catheter in facing engagement, wherein an internal diameter of the unitary base device is dimensioned to be substantially the same as an external diameter of a catheter for enabling the unitary base to be affixed to and conform to an external surface of the catheter;

(b) a cuff having a first edge abutting the first side of the first end piece and a second edge abutting the first side of the second end piece, the cuff having an outer diameter which is substantially the same as the outer diameter of the first side of the first end piece and as the outer diameter of the first side of the second end piece and being configured for positioning around the central portion of the base, wherein the base is configured for facilitating smooth movement of a catheter through subcutaneous tissue, and wherein the composite catheter stabilizing device is capable of moving through subcutaneous tissue without detaching from a catheter in order to subcutaneously anchor a catheter in subcutaneous tissue.