Method and apparatus for introducing fluids into the body

• US 3,971,376 A
• Filed: 10/02/1974
• Issued: 07/27/1976
• Est. Priority Date: 02/26/1973
• Status: Expired due to Term

• Current Assignee: Ceskoslovenska akademie ved
• Original Assignee: Ceskoslovenska akademie ved
• Inventors: Wichterle, Otto
• Primary Examiner(s): Medbery, Aldrich F.
• Application Number:
  US05/511,428
• Time in Patent Office: 664 Days
• Field of Search: 128/260, 128/272
• US Class Current: 424/423
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

Method and apparatus for feeding fluids to internal body organs. An implant is introduced subcutaneously comprising a capsule having a hollow interior cavity and at least one channel extending outwardly therefrom. The capsule is puncturable by needle injection, so as to be filled with liquid.

Claims

1. Apparatus for supplying fluids in an interior body organ comprising a capsule adapted to be implanted subcutaneously for extended periods of time said capsule having unitary walls formed of substantially non-collapsable self-sealing elastic material penetrable by injection and defining an enclosed bulbous interior cavity of given volume for receipt of fluid, said walls being formed of a hydrophillic elastic gel of sufficient strength to retain its shape and maintain a constant volume during periodic filling and emptying and reseal itself under penetration by injection feeding while implanted, said capsule having a channel exiting therefrom for connection to a conduit for the feeding and withdrawal of fluids to some body organ.

2. The apparatus according to claim 1, wherein a penetrable textile is imbedded within said elastic material to reinforce the same.

3. The apparatus according to claim 2, wherein the reinforcement is in the form of a penetrable textile fabric surrounding said cavity.

4. The apparatus according to claim 1, including an impenetrable wall imbedded in said material to one side of said cavity providing a barrier against injection through a portion of said capsule.

5. The apparatus according to claim 4 wherein said capsule is formed so that its dimension in the plane parallel with said wall is substantially larger than in the planes perpendicular thereto.

6. The apparatus according to claim 1, including extension means located on the exterior of said capsule for fixing and fixedly locating said capsule in the body.

7. The apparatus according to claim 1, wherein said capsule is shaped as a hollow oblong capsule having an enlarged neck at one end through which said channel passes, said neck having means for connection of a tube thereto.

8. The method of supplying fluid to body organs comprising the steps of implanting subcutaneously a hollow capsule capable of being injected with a fluid, said capsule having at least one exiting channel and connecting to said channel a conduit leading to said body organ.