Aqueous humor collection device

Abstract

The invention discloses an aqueous humor collection device. The aqueous humor collection device comprises an outer cylinder, a puncture needle and a liquid collecting pipe assembly, wherein the outer cylinder is provided with a puncture needle mounting end and a liquid collecting pipe mounting end; the puncture needle is inserted in the puncture needle mounting end and comprises a puncture needle outer end and a puncture needle inner end; the liquid collecting pipe assembly is pluggably and movably inserted in an outer cylinder cavity and comprises a liquid collecting pipe and a pipe stopper; a ventilation structure is formed between the liquid collecting pipe assembly and the inner peripheral wall of the outer cylinder, and can be communicated with a cylinder cavity area, between the puncture needle inner end and the pipe stopper, of the outer cylinder cavity, and the aqueous humor collection device also comprises a limiting buffer structure used for limiting radial displacement of the liquid collecting pipe assembly and used for forming contact damping between the liquid collecting pipe assembly and the inner peripheral wall of the outer cylinder. The aqueous humor collection device can control the drainage speed of aqueous humor during puncture, avoid the contamination of the aqueous humor after collection is completed and the waste caused by transfer of the aqueous humor, and can ensure the insertion and pulling stability of the liquid collecting pipe assembly, thereby being conductive to improving the safety, reliability and detection accuracy.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in particular to an aqueous humor collection device. Background technique [0002] Anterior chamber puncture is a medical technique that pierces the cornea of ​​the eyeball with instruments to allow aqueous humor to flow out. It has important application value in clinical research in ophthalmology. Drain the room. [0003] For now, there is no unified special equipment and consumables for the implementation of anterior chamber puncture. In actual clinical work, 1ml syringe needles are often used as anterior chamber puncture needles. However, in the process of puncturing with the 1ml syringe needle, it is difficult to control the drainage speed of aqueous humor. When the liquid is drained too fast, it will cause a rapid drop in intraocular pressure, and even cause other complications in severe cases. In addition, since the aqueous humor in the syringe cavity needs to be further transf...

AI Technical Summary

Problems solved by technology

However, in the process of puncturing with the 1ml syringe needle, the drainage speed of aqueous humor is difficult to control. When the liquid is drained too quickly, it will cause a rapid drop in intraocular pressure, and even cause other complications in severe cases.

In addition, since the aqueous humor in the syringe cavity needs to be further transferred to the microcentrifuge tube after the aqueous humor collection is completed, the aqueous humor will be wasted during the process, and the aqueous humor may be mixed with the external environment during the transfer process. The risk of contamination due to contact, resulting in biased test results and poor reliability

[0004] It can be seen that at this stage, it is urgent to develop a new type of acquisition device that can solve the problems of poor safety and reliability in the anterior chamber puncture process.

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