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Medical syringe with vitreous cavity

A vitreous cavity and syringe technology, which is applied in the field of medical devices, can solve the problems of inconvenience, air entering the eye, increasing cross-infection, etc., and achieve the effect of simple structure, convenient operation, and avoiding cross-infection

Inactive Publication Date: 2010-06-16
耿燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clinically, drug injection into the vitreous cavity is usually done with an ordinary syringe. After the vitreous is drawn out, the liquid withdrawal needle needs to be pulled out and connected to another drug injection needle. air into the eye
At present, there is no special syringe on the market that can directly inject medicine without pulling out the needle tube.

Method used

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  • Medical syringe with vitreous cavity
  • Medical syringe with vitreous cavity

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Embodiment Construction

[0008] The present invention is a vitreous cavity injector, which comprises ① a 30G injection needle; ② a three-way built-in liquid pumping check valve; ③ a three-way built-in medicine injection check valve; ④, ⑤ injection needles. The 30G injection needle is an ordinary skin test needle, which is connected to the single-tube end of the three-way tube, and the double-tube end is connected to the injection needle tubes ⑤ and ④ through the built-in one-way valve for suction ② and drug injection ③ respectively. ⑤ and ④ are ordinary 1ml injection needles, and the liquid is injected by pulling and pushing the plunger piston. The control flow direction of the one-way valve ② is back to the three-way, and the connected injection needle ⑤ can only suck out the vitreous body by pulling the piston; the control flow direction of the one-way valve ③ is to enter the three-way, and the connected injection needle ④ can only be sucked out by pushing the core rod. The plunger injects the liqui...

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Abstract

The invention relates to a medical syringe with a vitreous cavity, which is provided with a three-way tube, two built-in one-way valves and two 1 ml syringes. The single tube end of the three-way tube is connected with a 30G syringe needle; the dual tube ends are respectively connected with two 1 ml syringes through the built-in one-way valves; and the control flow directions of the two one-way valves are respectively a direction opposite to the three-way tube and the direction entering the three-way tube. Therefore, a medicinal liquid can be injected directly through the other syringe without withdrawal of a liquid drawing needle tube. The medical syringe with the vitreous cavity has the characteristics of simple structure, convenient operation, low cost, good safety performance and capability of avoiding cross-infection effectively.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical vitreous cavity injector. Background technique [0002] Intravitreal drug injection is a commonly used method in clinical ophthalmology to treat intraocular diseases such as endophthalmitis and fundus disease. Before drug injection, it is often necessary to extract part of the vitreous body for inspection or lower intraocular pressure. Clinically, drug injection into the vitreous cavity is usually done with an ordinary syringe. After the vitreous is drawn out, the liquid withdrawal needle needs to be pulled out and connected to another drug injection needle. Air is brought into the eye. At present, there is no special syringe on the market that can directly inject medicine without pulling out the liquid withdrawal needle tube. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M31/00
Inventor 耿燕滕峰孙颖王明民张振华许军
Owner 耿燕
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