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Microneedle device for treating age-related macular degeneration

A macular degeneration and age-related technology, used in ophthalmic surgery, laser surgery, etc., can solve problems such as difficulty in delivering drugs to the eye, the inability of eye drops to penetrate into the eye in large quantities, and safety issues.

Pending Publication Date: 2021-05-28
中国人民解放军陆军特色医学中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing medical field, drug delivery to the eye is extremely difficult, especially polymer delivery and delivery to the back of the eye
[0003] There are two common ways to deliver drugs to the eye: 1. Delivery using eye drops, which, while useful for treating conditions affecting the outer surface or tissues of the eye in the front of the eye, do not penetrate the back of the eye in significant quantities; 2. Injecting directly into the eye using a conventional needle and syringe, which, while more effective in delivering the drug to the back of the eye, requires specialized training and raises safety concerns

Method used

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  • Microneedle device for treating age-related macular degeneration
  • Microneedle device for treating age-related macular degeneration
  • Microneedle device for treating age-related macular degeneration

Examples

Experimental program
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Effect test

Embodiment

[0051] Example: such as figure 1 As shown, a microneedle device for treating age-related macular degeneration includes a hollow microneedle 1 , a barrel 2 and a driver 3 . The front end of the hollow microneedle 1 is a tip, and the hollow microneedle 1 has pinholes running through both ends of the hollow microneedle 1, and the pinholes are used to transfer the medicinal liquid. A base 4 is slidably arranged in the cylinder body 2, and the rear end of the hollow microneedle 1 extends to the inside of the cylinder body 2 and is connected to the front end of the base 4. The base hole, the front end of the base hole is opposite to the pinhole of the hollow microneedle 1; wherein, the rear end of the base 4 is enlarged and contacts the inner wall of the cylinder body 2, and the middle part of the base 4 is provided with teeth The rack 41 is connected with a power mechanism 5 arranged in the cylinder body 2 . The driver 3 is used to control the injection of the liquid medicine thr...

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Abstract

The invention provides a microneedle device for treating age-related macular degeneration, which comprises a hollow microneedle, a cylinder and a driver, a base is slidably arranged in the cylinder, and the hollow microneedle is connected with the base; the rear end of the base is expanded and is in contact with the inner wall of the barrel body, a rack is further arranged in the middle of the base, and the rack is connected with a power mechanism arranged in the barrel body; the driver is used for controlling injection of liquid medicine through the hollow microneedle. The micro-needle is injected into the sclera, the liquid medicine is injected, and the liquid medicine enters the suprachoroidal space of the eye through the inserted micro-needle to achieve delivery of the medicine; wherein the microneedles are capable of precisely delivering a drug into the suprachoroidal space for subsequent local delivery to nearby tissues requiring treatment; in addition, the power mechanism is arranged to be matched with the rack on the base to adjust the extending long section of the hollow microneedle, and therefore the depth of the microneedle inserted into the eye tissue can be accurately controlled.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a microneedle device for treating age-related macular degeneration. Background technique [0002] Age-related macular degeneration requires long-term drug treatment. However, in the existing medical field, drug delivery to the eye is extremely difficult, especially polymer delivery and delivery to the back of the eye. [0003] There are two common ways to deliver drugs to the eye: 1. Delivery using eye drops, which, while useful for treating conditions affecting the outer surface or tissues of the eye in the front of the eye, do not penetrate the back of the eye in significant quantities; 2. Direct injection into the eye using conventional needles and syringes, which, while more effective in delivering drug to the back of the eye, requires specialized training and raises safety concerns. [0004] Therefore, how to provide a microneedle device for treating age-related ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00736A61F2009/00865A61F2009/00885
Inventor 李崇义张洁琼徐洁喻娟刘莛刘玮叶剑
Owner 中国人民解放军陆军特色医学中心
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