Catheter lid with improved connection structure

Abstract

The technical solution of the invention is a catheter lid with improved connection structure. The catheter lid comprises a thread located on the inner side wall of the lid and an annular sealing rib located on the lower surface of the lid, wherein the top of the lid extends downwardly with a cylindrical portion, the bottom end of the cylindrical portion is provided with a connecting hole, and theinner side wall of the connecting hole is provided with two opposite arc segments, and the arc segment forms an angle greater than 45 degrees with the axis of the connecting hole. The catheter lid with improved connection structure provided by the invention is novel and simple in structure that the original thread structure is replaced by setting two opposite arc segments in the connecting hole, which, with little difference from the thread connection from the connection effect, solves the disadvantage that the original thread is easily broken during injection demoulding in terms of manufacturing; and when demoulding, the arc segments are used as parting surfaces, the upper sides of the arc segments are demolded upward, and the lower sides of the arc segments are demolded downward, which solves the problem of difficulty in demoulding, thereby solving the problems that designers in the industry have always wanted to solve and cannot solve.

Description

technical field [0001] The invention relates to a cup cover, in particular to a urinary catheterization cup cover with an improved connection structure. Background technique [0002] Urine cup is a common tool for detecting urine in medicine. At present, urine cup generally includes three parts: cup body, cup cover and collection needle. There is a downward extending cylindrical part on the cup cover. The bottom is provided with an internal thread and is connected to the collection needle through the thread. After the cup cover is screwed on, the collection needle is located at the bottom of the cup body. After screwing in the collection needle, tighten the cup cover on the cup body. At this time, the collection needle will be soaked in the urine in the cup body. When testing, use a vacuum tube to insert the needle tip of the collection needle, and the urine will automatically enter the vacuum tube under the action of negative pressure. In the vacuum tube, complete the coll...

AI Technical Summary

Problems solved by technology

However, in the actual production process, there is a big problem that has not been overcome, resulting in a high reject rate of the product, which indirectly increases the cost of the product. This problem lies in the internal thread at the bottom of the cylindrical part of the cup cover. The lid is injection molded as a whole. Its internal thread structure has always been a big problem when demoulding. Often the internal thread of this part is damaged during demoulding, resulting in the entire cup lid becoming a waste product. The waste rate is very high. high

Images