Title:
STOMATOLOGICAL NEGATIVE PRESSURE MOUTH RETRACTOR CAPABLE OF PREVENTING AEROSOL SPREAD
Document Type and Number:
WIPO Patent Application WO/2023/050849
Kind Code:
A1
Abstract:
A stomatological negative pressure mouth retractor capable of preventing aerosol from spreading, comprising a fixed base (1). A supporting column (2) is fixedly mounted at the top of the fixed base (1). A seat (3) is fixedly mounted on one side of the supporting column (2). A lifting mechanism (4) is fixedly mounted in the supporting column (2). A cross beam (5) is fixedly mounted at the top end of the lifting mechanism (4). An adjusting mechanism (6) is fixedly mounted on the surface of the cross beam (5). A guide rod (7) is fixedly mounted on one side of the adjusting mechanism (6). A mouth retracting mechanism (8) is fixedly mounted at the bottom of the guide rod (7) surface. A collecting mechanism (9) is arranged at the middle of the guide rod (8) surface. By providing the collecting mechanism (9), and controlling an electric air pump (92) to work, the air pump (92) is driven to suction air to enable an air suction pipe (97) to form a negative pressure. A collecting cover (98) suctions aerosol from the air, and the aerosol enters the inside of a filter box (91) by means of the air suction pipe (97), and then is filtered by a coarse filter screen element (94), a HEPA high-efficiency filter element (95) and a composite activated carbon filter element (96), and finally is discharged by means of an exhaust pipe (93), such that aerosol spread is effectively reduced.
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Inventors:
ZHAO ZHIYU (CN)
LI YIJIE (CN)
ZHAO LILI (CN)
LIU PENG (CN)
GUO LAN (CN)
ZHAO YANMING (CN)
LI YIJIE (CN)
ZHAO LILI (CN)
LIU PENG (CN)
GUO LAN (CN)
ZHAO YANMING (CN)
Application Number:
PCT/CN2022/095977
Publication Date:
April 06, 2023
Filing Date:
May 30, 2022
Export Citation:
Assignee:
UNIV NORTH CHINA TECHNOLOGY (CN)
International Classes:
A61C19/00; A61B1/24; A61C17/10; A61G15/10; B01D46/62; B01D53/04
Foreign References:
| CN109431736A | 2019-03-08 | |||
| CN215307930U | 2021-12-28 | |||
| CN214343303U | 2021-10-08 | |||
| CN111407561A | 2020-07-14 | |||
| KR102188226B1 | 2020-12-08 | |||
| CN214858836U | 2021-11-26 | |||
| CN112656451A | 2021-04-16 | |||
| CN111904781A | 2020-11-10 | |||
| CN214049596U | 2021-08-27 |
Attorney, Agent or Firm:
SHANDONG NUOCHENG ZHIHUI INTELLECTUAL PROPERTY AGENCY OFFICE (GENERAL PARTNERSHIP) (CN)
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