Gastro-intestinal tube guide and stiffener

• US 4,257,421 A
• Filed: 01/10/1979
• Issued: 03/24/1981
• Est. Priority Date: 01/10/1979
• Status: Expired due to Term

• Current Assignee: Ivax Corporation (Teva Pharmaceutical Industries, Ltd.)
• Original Assignee: Intellectual Property Development Corporation Pty Limited
• Inventors: Beal, Charles B.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US06/002,362
• Time in Patent Office: 804 Days
• Field of Search: 128/348-351, 128/341, 128/276, 128/214.4, 128/657, 128/772, 128/DIG. 9
• US Class Current: 604/170.01
• CPC Class Codes: A61J 15/0007 inserted by using a guide-wire guide wires A61M25/09
• CPC Class Codes: A61J 15/0026 Parts, details or accessories for feeding-tubes external tubes from medical containers to a connector outside of the body A61M39/08
• CPC Class Codes: A61J 2205/20 Colour codes
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: A61M 25/09025 with sliding mandrils

Abstract

A device for use in inserting soft and flexible tubular devices into a body passageways, said device characterized by being formed from a flexible base, such as multiple-strand nylon thread and having deposited upon said flexible base a soluble material such as gelatin, said soluble material characterized by being less flexible than said base in its undissolved state.

Claims

1. A guide for introducing a tubular device into a selected body passageway comprising an elongated core member of flexible base material consisting of a plurality of threads and a soluble coating on said base material, said coating characterized in its undissolved state by being less flexible than said tubular device flexible base material.

2. A guide according to claim 1 wherein said base material consists of a plurality of nylon threads.

3. A guide according to claim 1 wherein said base material consists of a plurality of nylon threads and said soluble coating is USP gelatin.

4. A guide according to claim 3 wherein said soluble coating is characterized by having a plurality of areas of slightly enlarged diameter.

5. A method for making a guide for inserting a tubular device into a selected body passageway consisting of coating a flexible base material comprising a plurality of threads with a less flexible soluble material while twisting said threads, to form a plurality of areas of said guide of slightly enlarged diameter.