Oligodynamic catheter

• US 4,054,139 A
• Filed: 11/20/1975
• Issued: 10/18/1977
• Est. Priority Date: 11/20/1975
• Status: Expired due to Term

• Current Assignee: Kent B. Crossley
• Original Assignee: Kent B. Crossley
• Inventors: Crossley, Kent B.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/633,641
• Time in Patent Office: 698 Days
• Field of Search: 128/348-351, 128/260, 128/1 R, 3/1, 3/1.4, 3/1.5
• US Class Current: 604/265
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61L 2300/104 Silver, e.g. silver sulfadiazine
• CPC Class Codes: A61L 2300/404 Biocides, antimicrobial agents, antiseptic agents
• CPC Class Codes: A61L 29/16 Biologically active materials, e.g. therapeutic substances A61L29/048 takes precedence
• CPC Class Codes: A61M 2039/0273 for introducing catheters into the body
• CPC Class Codes: A61M 2039/0285 with sterilisation means, e.g. antibacterial coatings, disinfecting pads, UV radiation LEDs or heating means in the port
• 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 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053

Abstract

A percutaneous lead device such as a catheter, or a urinary tract catheter, which comprises an oligodynamic agent such as metallic silver or its compounds, alone or in association with other heavy metals such as gold, for the purpose of reducing infection associated with these devices. The oligodynamic agent is on both interior and exterior surfaces of tube-like catheters.

Claims

1. In a catheter of the type comprising an elongated tubular member adapted for physiological use, the improvement wherein the exterior and interior surfaces of said elongated tube have fixed and exposed thereon an effective quantity of silver-bearing, immobile, oligodynamic material, wherein said material forms prophylatic means with respect to infection during said use and is adapted for contact with surrounding tissue.

2. Apparatus as defined in Claim 1 wherein polytetrafluoroethylene forms the oligodynamic, material-bearing surface of said catheter.

3. A catheter as defined in claim 2 wherein said effective quantity of silver-bearing material is substantially confined to coating materials of less than about 0.001 inch thickness and carried on the surfaces of said catheter.

4. A catheter as defined in claim 3 wherein said coating material bears less than 10% by weight of oligodynamic material in a matrix in which it is carried.

5. Apparatus as defined in Claim 3 wherein polytetrafluoroethylene forms said surface of said catheter.

6. A percutaneous lead device comprising, an elongated member having surfaces adapted for physiological contact, said surface having thereon an effective quantity, immobile of a silver-bearing oligodynamic material wherein said material forms prophylactic means with respect to infection during use and is adapted for contact with surrounding tissue.