Long-acting slow-release drug delivery device for intravitreal implantation of eyeball

Abstract

The invention discloses a long-acting slow-release drug delivery device for intravitreal implantation of eyeballs, which comprises a needle cylinder, wherein the needle cylinder is a main shell structure of the device, and a push rod penetrates through the surface of one side of the needle cylinder; a medicine gel placed in the needle cylinder, wherein the surface of one side of the needle cylinder is attached to the surface of one side of the piston; and an inner needle head fixedly arranged on the surface of one side of the needle cylinder, wherein one end of the inner needle head penetrates through the outer surface of the outer needle head, a thorn plate is fixedly arranged on the inner surface of the outer needle head, and the medicine bag permeable membrane is fixedly arranged at the tail end of a medicine release piston opening with a supporting rod. According to the long-acting slow-release drug delivery device, the inner bag and the outer bag are both folded in the outer needle head and can be expanded only after liquid medicine is injected, and therefore the bag with the large size can be implanted under a small wound, and the effect that the wound can be reduced is achieved.

Description

technical field [0001] The invention relates to the related technical field of medical devices, in particular to a long-acting sustained-release drug delivery device for intravitreal implantation of the eyeball. Background technique [0002] At present, due to the popularization of various digital products and poor eye habits, the incidence of glaucoma or adult macular degeneration has increased significantly in a large number of groups, including adolescents. Commonly, adult macular degeneration is a disease in the macular area of ​​the retina Degenerative disease, often accompanied by progressive visual impairment, also known as age-related macular degeneration (AMD), is the main cause of blindness in the elderly. According to its different manifestations, it can be divided into dry AMD and wet AMD (also known as Neovascular AMD), wet macular degeneration due to neovascular bleeding, leakage, edema eventually lead to the formation of paralyzed scars, resulting in irreversi...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a long-acting slow-release drug delivery device for intravitreal implantation of the eyeball, to solve the problem of large implantation wound caused by the above-mentioned background technology; repeated injection and implantation of drugs are required; two The problem of surgical removal

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