# US 4,054,139 A · Oligodynamic catheter

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- Number: US 4,054,139 A
- Document ID: US4054139A
- Status: Granted
- Kind: A
- Application number: 05/633,641
- Filed: 1975-11-20
- Granted: 1977-10-18
- Earliest claimed: 1975-11-20
- Inventors: Kent B. Crossley
- Web page: https://patentgrep.com/patent/US4054139A

## CPC

- A61M 39/0247: {Transcutaneous or percutaneous access sites to the inside of the body}
- A61F 2/04: Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95)
- A61L 29/16: Biologically active materials, e.g. therapeutic substances {(A61L29/048 takes precedence)}
- A61M 25/0017: {specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections}
- A61L 2300/104: Silver, e.g. silver sulfadiazine
- A61L 2300/404: Biocides, antimicrobial agents, antiseptic agents
- A61M 2039/0273: {for introducing catheters into the body}
- A61M 2039/0285: {with sterilisation means, e.g. antibacterial coatings, disinfecting pads, UV radiation LEDs or heating means in the port}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## 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

### Claim 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.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 2)

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.

### Claim 4 (depends on 3)

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.

### Claim 5 (depends on 3)

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

### Claim 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.