PERCUTANEOUS IMPLANT

• US 3,783,868 A
• Filed: 05/06/1971
• Issued: 01/08/1974
• Est. Priority Date: 05/06/1971
• Status: Expired due to Term

• Current Assignee: Jack C. Bokros
• Original Assignee: Jack C. Bokros
• Inventors: Bokros, Jack C.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US05/140,869
• Time in Patent Office: 978 Days
• Field of Search: 3/1 128/2R,2F,260,348-351,214R,215,216,213,1R,334
• US Class Current: 604/891.1
• CPC Class Codes: A61M 2039/0261 Means for anchoring port to the body, or ports having a special shape or being made of a specific material to allow easy implantation/integration in 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 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
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence

Abstract

A percutaneous device for drug injection in a living body which is implanted through the skin and which has a pyrolytic carbon coating. The device has a stem and a stabilizing flange, and a collar associated with the stem for preventing the progressive growth of epithelium tissue along the stem and for anchoring the device. A normally closed valve is in a passageway through the stem for administration of medication.

Claims

2. A percutaneous implant device in accordance with claim 1 wherein said medication reservoir and release means comprises a porous membrane which is affixed to the end of said passageway adjacent said stabilizing flange.

3. A percutaneous implant device in accordance with claim 1 wherein said elastomeric plug is provided with a pressure-operable passageway therethrough.

4. A percutaneous implant device in accordance with claim 1 wherein said collar is formed from a refractory metal screen having a wire diameter of from about 0.05 mm to about 0.1 mm and wherein the spacing between the wire of said pyrolytic carbon coated collar is about 1 mm.

5. A percutaneous implant device in accordance with claim 1 wherein said collar substrate is a perforated metal sheet.

6. A percutaneous implant device in accordance with claim 1 wherein said collar substrate is a carbon fiber mesh.

7. A percutaneous implant device in accordance with claim 1 wherein said elastomeric plug valve is an unperforated elastomer plug adapted for use with a hypodermic needle.

8. A percutaneous implant device in accordance with claim 2 wherein said elastomeric plug valve is provided with a pressure-operable latent passageway therethrough.

9. A percutaneous implant device in accordance with claim 1 wherein the surface of said pyrolytic carbon is oxidized.

10. A percutaneous implant device in accordance with claim 2 wherein said stem is provided with a second pyrolytic carbon coated refractory flange, adjacent the externally positionable end of said stem opposite its base, for protection of the implantation site.

11. A percutaneous implant device for drug injection in a living body, comprising a pyrolytic carbon coated refractory stem having a passageway therethrough, a pyrolytic carbon coated refractory stabilizing flange adjacent the base of said stem for stabilizinG the implant device in surrounding subcutaneous tissues, a porous, carbonaceous physiologically inert layer into and through which epithelium tissue will grow, said layer being located circumferentially about said stem for preventing encapsulation of the device by the progressive growth of epithelium tissue along said stem and for anchoring the implant device upon epithelium growth therethrough, a normally closed elastomeric plug valve in said passageway for administering medication through said passageway and to prevent entrance through said passageway of external pathogens or other undesired material, and medication and release means in communication with said passageway for retaining a reservoir of medication administered through said valve and for releasing medication in the reservoir into the surrounding tissues in a predetermined manner, said pyrolytic carbon coacting on said stem and flange being an integral pyrolytic carbon coating having a thickness of at least about 10 microns, and a density of at least about 1.5 grams per cubic centimeter.

12. A percutaneous implant device in accordance with claim 12 wherein said elastomeric plug is provided with a pressure-operable passageway therethrough.