Drug ejecting apparatus and control method thereof
US8607783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2009 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Nov 7, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drug ejecting apparatus has an ejection port and an element which generates energy for ejecting a drug from the ejection port; a drug containing unit is connected to the drug ejection apparatus, and contains the drug; a movable wall is attached to an end of the drug containing unit, and is displaced by difference between pressures inside and outside of the drug containing unit; and a control unit displaces the movable wall. The drug ejection apparatus is filled with the drug, and the inside pressure of the drug containing unit is put in a negative pressure state in advance of ejecting of the drug, by displacing the movable wall by means of the control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.