Rear stress-type glaucoma diversion valve

A posterior type, glaucoma technology, applied in the field of ophthalmic surgery, can solve the problems of complex structure and high cost of drainage devices, and achieve the effects of controlling damage to the optic nerve and optic function, not easy to block, and easy to flush

Active Publication Date: 2014-09-17
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the drainage device of this invention is very complicated, requiring highly sophisticated manufacturing technology and complex sensor control technology, which will inevitably lead to high cost

Method used

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  • Rear stress-type glaucoma diversion valve
  • Rear stress-type glaucoma diversion valve
  • Rear stress-type glaucoma diversion valve

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Embodiment Construction

[0040]In order to better understand the above technical solutions of the present invention, a further detailed description will be given below in conjunction with the drawings and embodiments.

[0041] An embodiment of the post-type stress glaucoma drainage valve of the present invention is as follows Figure 2-4 As shown in the figure, it includes a hollow drainage pipe 210 and a valve cover 220 for controlling the opening and closing of the drainage pipe, and is characterized in that:

[0042] The drainage pipe 210 is embedded in an openable casing 230, the casing 230 is composed of a drainage plate 231 and a casing cover 232. The guide groove 235 on the edge of the plate 231, see Figure 8 with Figure 9 .

[0043] The outlet end of the drainage pipe 210 is embedded in the drainage plate 231 , and the inlet end of the drainage pipe 210 is perpendicular to the lower surface of the drainage plate 231 and protrudes downward from the lower surface of the drainage plate 231 ....

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PUM

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Abstract

The invention provides a rear stress-type glaucoma diversion valve, relates to a method and a device for ophthalmosurgery and particularly relates to a rear glaucoma diversion embedding device for controlling intraocular pressure. The rear stress-type glaucoma diversion valve comprises a hollow diversion pipeline and a valve cover used for controlling the opening and closing of the diversion pipeline, wherein the outlet end of the diversion pipeline is provided with an openable and closable housing which consists of a diversion plate and a housing cover; the outlet end of the diversion pipeline is embedded in the diversion plate; the inlet end of the diversion pipeline is vertical to the lower surface of the diversion plate and downwards stretches out from the lower surface of the diversion plate; the diversion pipeline can enter from a pars plana corporis ciliaris by virtue of a 23G or 25G stab knife; the part, corresponding to the valve cover, of the inner side of the housing cover is provided with a spring pressurizing device; when the housing cover is closed, the spring pressurizing device applies a pressure to the valve cover. The spring pressurizing device is used for controlling the intraocular pressure within a normal and safe target intraocular pressure range; the inner cavity of the diversion pipeline is large in diameter, short in length and low in blockage possibility, thereby being conductive to ensuring the safety and effectiveness of the diversion valve and realizing long-acting control over the intraocular pressure.

Description

technical field [0001] The invention relates to a method and a device for eye surgery, in particular to a post-type glaucoma drainage device for controlling intraocular pressure. Background technique [0002] Glaucoma is the second most irreversible blinding eye disease in the world and one of the main blinding eye diseases in my country. Glaucoma occurs when intraocular pressure (IOP) increases above normal pressure for a prolonged period of time. IOP can increase due to an imbalance between aqueous humor production and aqueous humor drainage. If left untreated, elevated IOP causes irreversible damage to the optic nerve and retinal fibers, producing gradual, permanent loss of vision. [0003] figure 1 It is a schematic diagram of the existing front-mounted glaucoma drainage valve placed in the front of the eye. exist figure 1 In , the lens 110, cornea 120, iris 130, ciliary body 140, and trabecular meshwork 150 of the eye structure are depicted. Anatomically, the ante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
Inventor 荣翱徐蔚王震李厚硕曲申祁小龙
Owner SHANGHAI TONGJI HOSPITAL
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