一种上颌扩弓器
By designing an independently stud-controlled maxillary expander, the front and rear sections of the expander are expanded separately, solving the problem of excessive expansion of the molar area caused by traditional expanders, reducing the risk of bone fracture and gingival recession, and improving treatment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional maxillary expanders, when used to treat maxillary stenosis and posterior crossbite, can cause excessive expansion of the molar region, increasing the risk of bone fracture and gingival recession.
A maxillary expander was designed, which achieves separate expansion of the front and rear parts of the expander by setting independent studs at the top and bottom of the connecting block, avoiding excessive expansion of the molar area, and ensures smoothness and stability of adjustment through guide posts and rotating shaft structure.
This effectively avoids excessive expansion of the molar area, reduces the risk of bone fracture and gingival recession, and improves the safety and effectiveness of treatment.
Smart Images
Figure CN224505619U_ABST
Abstract
Claims
1. A maxillary arch expander, characterized in that, The bow expander body includes a bow expander body with collars connected to both sides by connecting beams. The bow expander body includes a left connecting block and a right connecting block. The tops of the left connecting block and the right connecting block are connected by a first stud, and the bottoms of the left connecting block and the right connecting block are connected by a second stud. Both the left and right connecting blocks have a third shaft hole in the middle. A third rotating shaft is rotatably connected in the third shaft hole. A guide hole is provided on the side wall of the third rotating shaft. A guide post is connected between the left and right connecting blocks. The two ends of the guide post pass through the guide holes on the left and right connecting blocks, respectively.
2. A maxillary expander as claimed in claim 1, wherein, The expander has collars connected to both sides by connecting beams, and the collars are fixed to the crowns of the maxillary molars and premolars.
3. A maxillary expander as in claim 1, wherein, Both the left and right connecting blocks have a first shaft hole at their top, and a first rotating shaft is rotatably connected inside the first shaft hole. A first threaded hole is provided on the side wall of the first rotating shaft.
4. A maxillary expansion device as in claim 3, wherein, The first stud is threaded to the first threaded holes on the left connecting block and the right connecting block at both ends.
5. A maxillary expansion device as claimed in claim 4, wherein, The threads at both ends of the first stud have opposite directions of rotation.
6. A maxillary expansion device as in claim 1, wherein, Both the left and right connecting blocks have a second shaft hole at their bottom. A second shaft is rotatably connected inside the second shaft hole. A second threaded hole is provided on the side wall of the second shaft.
7. A maxillary expansion device as in claim 6, wherein, The two ends of the second stud are threadedly connected to the second threaded holes on the left connecting block and the right connecting block, respectively.
8. A maxillary expansion device as in claim 7, wherein, The threads at both ends of the second stud are in opposite directions.
9. A maxillary expansion device as in claim 1, wherein, The guide post has protrusions at both ends, and the cross-sectional area of the protrusions is larger than that of the guide post.
10. A maxillary expansion device as in claim 1, wherein, An adjustment block is provided in the middle of the first stud and the second stud, and the outer surface of the adjustment block is provided with multiple adjustment holes.