Tubular medical instrument air tightness testing device and method

Abstract

The invention discloses a tubular medical instrument air tightness testing device and method, the tubular medical instrument air tightness testing device comprises a pipe conveying assembly and a pipe inspection assembly, one side of the pipe conveying assembly and the rear end of the pipe inspection assembly are movably installed, and the pipe inspection assembly comprises a vertical frame. According to the invention, after a pipe is extruded to one end of the pressure measuring end head, limited and fixed, a pressure pump slowly conveys air into the pressure increasing end head, air flow is guided into the adapter through the pressure increasing pipe, one part of the air flow inflates the pipe to be measured through the through hole at the axis, and the other part of the air flow enters the telescopic inflation ring through the shunting hole; the telescopic inflation ring is inflated and expanded to be stuffed into the inner side of one end of the detected pipe, one end of the detected pipe is sealed and limited, the telescopic inflation ring expanded through inflation can meet the requirement for airtightness detection of pipes of various sizes, and the detection end does not need to be replaced frequently for detection of pipes of different inner diameters. And the influence of errors generated in the production process on the pipe detection precision is reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment manufacturing, in particular to a device and method for testing the air tightness of tubular medical equipment. Background technique [0003] With the development of science and the progress of society, modern medical equipment is gradually entering our life, which greatly promotes the progress of human life. Among the existing medical devices, many medical devices are tubular, or are provided with tubular components. These tubular medical devices are widely used in the medical field. Therefore, in the manufacturing process of medical tubular devices, it is necessary to strictly test their production quality. , Usually, in order to ensure the safety of the application of tubular medical devices, routine air tightness testing is required to avoid accidents such as backflow and inability to push medicinal liquids during the operation. [0004] In the prior art, for example, the Chinese ...

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Problems solved by technology

[0005] However, in the actual use of the existing technology, due to the wide variety of tubular medical devices, their inner diameters are different, and the same specification of tubular medical devices, due to the influence of soft materials, the production error of the same production batch may be different. Under the ambient temperature, the inner diameter of the port also has a slight difference. The diameter of the protruding end of the air tightness detection device is fixed. It can only detect tubular medical devices of the same specification or the same inner diameter, and cannot eliminate the influence of production errors or errors caused by the environment. , when it is applied to the detection of tubular medical devices with different inner diameters, it is necessary to replace the corresponding detection end, which seriously affects the detection accuracy and efficiency

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