Artificial gland for implantation in a human body

• US 4,923,457 A
• Filed: 11/21/1986
• Issued: 05/08/1990
• Est. Priority Date: 11/22/1985
• Status: Expired due to Fees

• Current Assignee: Industrikontakt Ing
• Original Assignee: Industrikontakt, Ing. O. Ellingsen & Co.
• Inventors: Ellingsen, Olav
• Primary Examiner(s): FRINKS, RONALD
• Application Number:
  US06/933,755
• Time in Patent Office: 1,264 Days
• Field of Search: 623/11, 623/12, 604/891.1, 604/892.1, 604/93, 604/175
• US Class Current: 604/891.1
• CPC Class Codes: A61F 2/022 Artificial gland structures using bioreactors hemodialysis A61M1/16; hemofiltration A61M1/34; other extracorporeal blood treatment A61M1/36

Abstract

An artificial gland for implantation in the human body and comprising a medicament reservoir intended for being filled with a medicament solution by the aid of a syringe said reservoir, via a passage, being connected with a casing the wall of which casing is completely or partly comprised of a semipermeable membrane that causes changes of pressure by osmosis for delivery of a medicament.

Claims

1. An artificial gland for implantation into a human body together with a reservoir for filling with a medicant solution with a syringe, the gland comprising:

a capillary tube for connection to the reservoir, a casing having a wall which is at least partly comprised of a semipermeable membrane for causing changes of pressure inside the casing by osmosis when the casing is implanted in a human body for delivery thereto of the medicant solution of the reservoir, the semipermeable membrane being rigid and the casing being provided in connection with the capillary tube, a flexible hose extending from an end of the capillary tube inside the casing to an opposite portion of the casing wall, the flexible hose being provided with a rod having a center bore that leads out through the opposite portion of the casing wall at one end and opening at its opposite end into a transversal bore leading to an exterior surface of the rod which is covered by the flexible hose.

2. An artificial gland, comprising:

a capillary tube for a passage from a reservoir;

a non-compressible, semipermeable casing forming a chamber about one end of the capillary tube;

a flexible hose about the one end of the capillary tube and inside the casing;

a rod inside the hose, the rod having a first bore to outside the casing and a second bore communicating with the first bore and inside of the hose,

whereby fluid migration from the chamber by osmosis through the semipermeable casing bulges the hose from the one end of the capillary tube and the second bore of the rod for fluid flow through the capillary tube and bores from the reservoir to the outside of the casing.