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3results about How to "Strong retention" patented technology

Full-dentition anchorage spiral expansion device and preparation method thereof

PendingCN121926704Areduce stressimprove protectionDental implantsImpression capsLingual surfacePatient comfort
The invention discloses a full-dentition anchorage spiral expansion device, and relates to the technical field of orthodontic medical instruments. Comprising a spiral expander, a left anchorage assembly and a right anchorage assembly, the orthodontic device is characterized in that each anchorage assembly comprises a groove-shaped metal full crown covering the occlusal surface, the cheek side surface and the lingual side surface of a plurality of rear teeth on the same side, an arch expansion tongue rod fixedly connected with the near-middle lingual side surface of the metal full crown on the same side, and an arch expansion cheek rod fixedly connected with the near-middle cheek side surface of the metal full crown on the same side; the device is high in retention force, high in bony expansion efficiency, good in tooth protection, high in patient comfort level and wide in application range.
Full-dentition anchorage spiral expansion device and preparation method thereof
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Owner:LISHUI DENTAL HOSPITAL CO LTD +1

Tube retaining clip

ActiveCN114440006Bstrong retentionLimit slidingPipe supportsPipe elementsStructural engineeringMechanical engineering
The application provides a tube holding clamp, which has a width direction, a height direction and a length direction, and comprises a base, a pair of oppositely arranged side portions which are formed by extending upward from the base, a pair of holding arms which respectively extend inward from the pair of side portions and toward the base, and a support portion which is connected to the base or the pair of side portions on both sides and has a certain spacing between the base and the pair of side portions, and has a working surface which is an arc-shaped surface recessed toward the base, wherein the support portion is located below the pair of holding arms, and a clamping space is formed between the pair of holding arms and the working surface. The tube holding clamp provided by the application can provide appropriate holding force to limit the movement of the clamped tube in the axial direction of the tube.
Tube retaining clip
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Owner:ILLINOIS TOOL WORKS INC

Method for detecting trans-4,5-epoxy-2(e)-decanal based on lc-ms / ms

PendingCN122306978Aachieve accuracyRealize quantitative analysisEpoxyDisease
This invention provides a method for detecting trans-4,5-epoxy-2(E)-decaldehyde based on LC-MS / MS. First, trans-4,5-epoxy-2(E)-decaldehyde standards are prepared into standard solutions of different concentrations. Then, the standard solutions are derivatized by solid-phase extraction with 2,4-dinitrophenylhydrazine (DNPH) to obtain analytical samples containing standard solutions of different concentrations. Next, LC-MS / MS analysis is performed on the analytical samples of different concentrations of standard solutions to obtain a standard curve with standard concentration as the abscissa and peak area as the ordinate. The sample to be tested is detected using LC-MS / MS, and the content of trans-4,5-epoxy-2(E)-decaldehyde in the sample is determined using the standard curve. This invention achieves accurate qualitative and quantitative analysis of this compound and establishes a standardized platform for the role of this compound in systemic health and disease.
Method for detecting trans-4,5-epoxy-2(e)-decanal based on lc-ms / ms
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Owner:CENT SOUTH UNIV

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