Apparatus and method for delivery of micro and submicro quantities of materials
US6159188A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 2, 1998 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 2, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/0008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A process and apparatus (invention) permitting the distribution of micro or submicro liter or gram (exceptionally small) quantities of liquids and powders, (hereafter materials) in patterns and quantities that are especially well-suited for ophthalmologic patient self-application of drugs to his own eye(s) with substantially no overdose. The invention is thus also highly beneficial in those many topical drug applications where overdoses should be avoided. This is particularly applicable for the eye, where overdoses can have many deleterious medical consequences. Use of the invention permits exceptionally small doses of ophthalmologic drugs. Moreover, it also permits the repeatability of the quantity size of the materials chosen for delivery. In the case of drugs, particularly opthomologic drugs, this means that the invention permits the repeated multiple distribution of the same chosen drug/carrier quantity resulting in a uniform repeatable dosage. Variation of dose from one application to another is very unacceptable. The preferred apparatus of the invention employs a venturi configuration inventively modified which uses gas under pressure to pump exceptionally small quantities of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.