Infusion of liquids into tissue
US4159720A · kind A · utility
Inventor
Key dates
| Filing date | Nov 28, 1977 |
| Grant date | Jul 3, 1979 |
| Priority date | — |
| Expiry date | Nov 28, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/14248
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A means is shown for delivering a prescribed liquid medicine or other fluid to a subcutaneous tissue. The device includes a reservoir on the outside of the body for holding a supply of the prescribed liquid, the reservoir being adhesively attached to the skin near the tissue to be treated. The reservoir feeds the liquid to absorbent or capillary wicks adapted to pass through the skin to be installed in the subcutaneous tissue to which the fluid is to be fed. The wicks may be provided in several forms such as twisted or braided suture material, the ends of which, in some instances, may be encased in plastic. The wicks, in whatever form, are guided from the outside into their installed positions in the subcutaneous tissue with conventional cutting or tapered surgical needles, and in the modification making use of a plastic casing, a slightly modified needle is used to install the wick cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.