Low-noise vacuum release suction device and controllable aspirator using same
US7306577B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jul 27, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/11
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is concerned with a vacuum release suction device for regulating and controlling suction in an aspiration line, and which may be included in aspirators such as for example dentistry, surgery, or cosmetic tools. When operated, such tools generally generate noise which may become harmful to the tool user or for the patient on which the tool is used. More specifically, the suction device of the present invention includes a body having an inlet port and an outlet port defining a chamber in the body and a bypass inlet intersecting the chamber at an acute angle with respect to the longitudinal axis of the chamber, such that a main fluid stream is generated with minimized occurrences of flow separation, turbulence and therefore minimized generated aerodynamic noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.