Retina extractor

A retina and extractor technology, applied in ophthalmic surgery and other directions, can solve the problems of long retinal sampling time and low survival rate of retinal nerve cells, and achieve the effects of shortening the acquisition time, easy to grasp the method, and ingenious and reasonable design.

Active Publication Date: 2015-03-18
THE FIRST AFFILIATED HOSPITAL OF ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of long retinal sampling time and low survival rate of retinal nerve cells in the prior art, and provide a retinal extractor that can quickly obtain the retina and improve the survival rate of retinal nerve cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 retinal extractor, see Figure 1-3 , including the handle, one end of the handle is equipped with a retinal extraction spoon, and the other end is equipped with a blade; the handle is 80mm long, its cross section is circular, and its diameter is about 6mm, that is, the handle is a cylindrical structure; the retinal extraction spoon has a spoon head with a cross section of Round, with a diameter of 2.5-10 mm, the angle between the plane where the spoon is taken out and the axis of the handle is 15 degrees; the blade has a sharp tip, and the angle at which the tip is located is 30 degrees.

[0024] The two ends of the handle are provided with insertion slots, and the handle and the retinal extraction spoon, the handle and the blade are all connected and fixed by means of insertion. Handles are made of stainless steel or organic plastic.

[0025] How to use the Retina Extractor:

[0026] First, fully rinse the eyeballs from experimental animals with pre-coo...

Embodiment 2

[0027] Example 2 It is basically the same as Example 1, the difference is:

[0028] The handle of the retinal extractor is 90mm long, the cross-sectional diameter of the handle is 7mm, and the material is made of organic plastic; the diameter of the retinal spoon head is 11-16mm, and the angle between the plane where the retinal extractor is located and the axis of the handle is 20 degrees.

[0029] The handle and the retinal extraction spoon, the handle and the blade are fixed by existing spring fixing bolts or spring sheets. The angle at which the knife tip rests is 25 degrees, and the retinal removal spoon and blade are made of disposable materials.

Embodiment 3

[0030] Example 3 It is basically the same as Example 1, the difference is:

[0031] The handle of the retinal extractor is 100mm long, and the cross-sectional diameter of the handle is 8mm; the diameter of the spoon head is 17-20mm. The angle between the plane where the spoon is taken out and the axis of the handle is 30 degrees, and the angle where the knife tip is located is 20 degrees. The retinal removal spoon is made of organic plastic.

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Abstract

The invention relates to a retina extractor used for an operation in the experimental ophthalmology. The retina extractor comprises a handle, a retina extracting spoon is arranged at one end of the handle, and a blade is arranged at the other end of the handle. A certain inclination angle is formed between the plane where the retina extracting spoon is located and an axis of the handle. A blade point is arranged at the front end of the blade. Insertion grooves are formed in the two ends of the handle respectively, and matched with the retina extracting spoon and the blade. Devices are arranged in the insertion grooves and used for fixing the retina extracting spoon and the blade. The handle, the extracting spoon and the blade are designed integrally, the design is exquisite and reasonable and meets the body mechanics principle, acquisition time of the retina can be greatly shortened, a using method and steps are simple and convenient to implement, and good conditions are created for the survival rate of nerve cells of the retina. The retina extractor is suitable for being used by researchers and medical workers at different levels in the field and worthy of being popularized.

Description

technical field [0001] The invention relates to a surgical medical device, in particular to a retinal extractor used in experimental ophthalmology. Background technique [0002] The retina is an important part of the eye structure. It is a transparent film located in the inner layer of the eyeball wall, consisting of the retinal pigment epithelium and the retinal nerve layer. More than 80% of the information that humans obtain from the outside world comes from the visual system. Statistics show that there are about 160 million visually impaired patients and 40 million legally blind people in the world. China is the country with the largest number of blind people in the world, about 7 million, and about 450,000 people go blind in China every year. The damage caused by blinding eye diseases and the heavy burden on society will be immeasurable. Retinal diseases are the most common cause of blindness in developed countries (more than 50%). In my country, about 200,000 (45%) s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/007
Inventor 彭广华
Owner THE FIRST AFFILIATED HOSPITAL OF ZHENGZHOU UNIV
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