Apparatus for detecting distance between drug dissolving instrument basket bottom and dissolution cup bottom

Abstract

The invention discloses an apparatus for detecting a distance between a drug dissolving instrument basket bottom and a dissolution cup bottom. The apparatus is characterized in that: a measuring rod is fixedly connected with a displacement sensor in a digital display mechanism, the digital display mechanism is fixed on a connection board, and a lower end of the connection board is fixed with a locating plate; one side of the connection board is provided with two bosses, and each boss is opened with a groove respectively; a basket rod or an oar rod is placed in the groove in a parallel way and is fixed to a wall of the groove with a briquetting and a locking screw, and a center of a lower tip of the measuring rod is in a same axis with the basket rod or oar rod; a basket is connected to a lower end of the basket rod; a blade is connected to a lower end of the oar rod. According to the invention, the measuring rod is fixed with the basket rod or the oar rod of a drug dissolving instrument, and accuracy of position reference can be ensured. A measuring apparatus has small volume and can freely rise and descend in a dissolution cup, and digital display facilitates a user to read data in real time. Simultaneously, a reliable verification method is provided for related experiment and research personnel.

Description

technical field [0001] The invention belongs to a drug dissolution testing instrument, in particular to a device for testing the distance between the bottom of a drug dissolution instrument basket (or stirring paddle) and the inner bottom of a dissolution cup. Background technique [0002] With the continuous research and development of new drugs, the utilization of drug dissolution testers (referred to as drug dissolution testers) is also increasing. People have put forward higher requirements for the performance and accuracy of the drug dissolution instrument. For example, the traditional salicylic acid calibration tablet verification method is a method to indirectly judge the performance of the drug dissolution instrument through the drug dissolution results. The verification result of this method is directly affected by the quality of the calibration sheet, and the verification process takes a long time, the operation is cumbersome, and the repeatability is poor. For t...

AI Technical Summary

Problems solved by technology

However, this parameter cannot be measured with ordinary detection tools. The detection method used in the United States has defects such as complex devices and high manufacturing costs, and the detection accuracy is not ideal and it is inconvenient to operate.

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