Infusion device
US4775368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1987 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Feb 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infusion device is provided with an injection molded drip chamber, a drop sensor, such as a light barrier (26,28) or a piezoelectric crystal. An evaluation circuit processes the output signals furnished by the drop sensor and an optical display means (24) indicates the same to the operator. Recesses are formed integrally in or at the drip chamber to take up the drop sensor (26,28) the evaluation circuit, and the power source as this not only makes it possible to produce the infusion device at low cost but also permits the operator to have a look into the drip chamber, while the dripping rate is displayed optically at the same time. In a preferred modification there is complete control of the dripping rate by means of a control clamp (60) the flow cross section of which is adjustable by a drive means (64).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.