Fluid-driven medical or dental handheld device
US11833000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2020 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jul 19, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fluid-driven medical or dental handheld device includes a head, the head including a housing and a impeller rotatably mounted in the housing. The housing defines a receiving chamber for receiving the impeller, a main air inlet and an air outlet being defined in the housing and communicating with the receiving chamber. An inner surface of the housing surrounding the receiving chamber defines a plurality of grooves, the grooves being arranged at intervals along a circumferential direction of the housing. The grooves reflect rotating airflows directed to the grooves to change directions and speeds of the airflows to form interference airflows, which can effectively reduce the rotation speed of the head at idling, while ensuring the torque output of the head during grinding teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.