Title:
DENTAL POWDER-JET HANDPIECE
Document Type and Number:
WIPO Patent Application WO/2023/024430
Kind Code:
A1
Abstract:
A dental powder-jet handpiece, comprising a powder-jet handle (2) and a powder tank (8), wherein the powder-jet handle (2) is in communication with the powder tank (8); the powder tank (8) is in communication with an air supply device of a dental chair by means of a dental chair hose (1), and the air supply device supplies compressed air to the powder tank (8) by means of the dental chair hose (1); the lower end of the powder tank (8) is provided with an air input hole, and the air input end of the air input hole is in communication with the dental chair hose (1); the lower end of the powder tank (8) is provided with a first air output hole and a second air output hole; the air output end of the first air output hole is in communication with an inner cavity of the powder tank (8); the air output end of the second air output hole is in communication with the powder-jet handle (2) by means of a purging pipe (9); the air input end of the first air output hole and the air input end of the second air output hole are in communication with the air output end of the air input hole by means of a reversing valve (17); and the reversing valve (17) is used to control the air input hole to be in communication with the first air output hole or the second air output hole. When the dental jet powder in the powder-jet handle (2) is removed, it is not necessary to pour out the dental jet powder in the powder tank (8). Instead, the reversing valve (17), a second air outlet and the purging pipe (9) are additionally provided in the powder tank (8), such that an air inlet is in communication with the second air outlet by means of the reversing valve (17) but not in communication with a first outlet, and then the compressed air entering the second air outlet is guided into the powder-jet handle (2) by means of the purging pipe (9) to remove the dental jet powder remaining in the powder-jet handle (2).
More Like This:
| WO/1985/002107 | TOOTH CLEANING INSTRUMENT |
| WO/2021/262336 | SYSTEM FOR PREPARING TEETH FOR RESTORATION |
| JP6284222 | Powder distribution equipment |
Inventors:
WU XUNXIAN (CN)
TANG PENG (CN)
ZHANG LIBIN (CN)
TANG PENG (CN)
ZHANG LIBIN (CN)
Application Number:
PCT/CN2022/072908
Publication Date:
March 02, 2023
Filing Date:
January 20, 2022
Export Citation:
Assignee:
GUILIN WOODPECKER MED INSTR CO (CN)
International Classes:
A61C3/025
Domestic Patent References:
| WO2008115129A1 | 2008-09-25 |
Foreign References:
| CN113143517A | 2021-07-23 | |||
| CN113476156A | 2021-10-08 | |||
| CN215458798U | 2022-01-11 | |||
| CN107427337A | 2017-12-01 | |||
| CN112107381A | 2020-12-22 | |||
| US20180071051A1 | 2018-03-15 | |||
| CN113017865A | 2021-06-25 | |||
| CN202110975263A | 2021-08-24 | |||
| CN202122005801U | 2021-08-24 |
Other References:
See also references of EP 4162895A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF: