Aspirator
US5195961A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Mar 18, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an aspirator for aspirating materials to be removed within the eyeball. The materials are an infusion or the viterous body. A conventional aspirator permits no easy provision of an arbitrary pressure. In accordance with the present invention, a pressure adjusting unit (90) is disposed to connect an accommodating unit (100) to the air through an opening (96) of a variable size. For such a conventional aspirator, it is required that aspiration should be interrupted as a bottle is full with the removed materials. For the present invention, there are provided a first accommodating unit (2100), a second accommodating unit (2101) and a third accommodating unit (2102). The third accommodating unit (2102) has a capacity larger than each of the first and second accommodating units (2100, 2101). These accommodating units are connected. Furthermore, such a conventional aspirator may not ensure a safety in surgery. In accordance with the present invention, a flexible passage portion (3020) is disposed in the main body (3005) of the aspirator in such a manner that the passage portion (3020) is opened or closed by operation of a materials-passage opening/closing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.