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Rust ring type corneal foreign body removing needle

A technology of corneal foreign bodies and rust rings, which is applied in the field of medical devices and can solve problems such as difficulties in cutting collagen fibers

Pending Publication Date: 2020-09-01
永康市第一人民医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the present invention provides a rusty ring type corneal foreign body removal needle to solve the problem in the prior art that because the rusty ring is a part of the collagen fibers of the entire corneal lamellar layer, collagen fibers need to be cut off for removal, and the needle point or all other present Foreign body removal Aiming at the difficulty of cutting off the collagen fibers of the foreign body in the rust ring for a week

Method used

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  • Rust ring type corneal foreign body removing needle
  • Rust ring type corneal foreign body removing needle
  • Rust ring type corneal foreign body removing needle

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown: the present invention provides a rust ring type corneal foreign body removal needle, including: circumcision needle tube 1, needle core 2, grip handle 3 and adjustment wrench 4. Such as Figure 3-4 In order to facilitate the understanding of the structure of this embodiment, the three-dimensional schematic diagram of the disassembly state is drawn.

[0028] The head end of the circumcision needle tube 1 is an annular cutting edge on the edge of the needle tube, the annular cutting edge is a circular inward cutting edge, the inner diameter of the lumen of the circumcision needle tube 1 is 0.5mm, and the tail end of the circumcision needle tube 1 is provided with a handle 3 , the shell surface of the grip handle 3 can be designed as but not limited to grooves, ridges or frosting to increase grip stability and ease of operation.

[0029] The grip handle 3 is a hollow nut-like structure, the grip handle 3 is matched with the grip handle inner sc...

Embodiment 2

[0033] In embodiment 2, for the same structure as in embodiment 1, the same symbols are given, and the same description is omitted. Embodiment 2 is mainly designed to be detachable, and the grip handle 3 is used for opening and closing at the vertical cutting position. To fix the circumcision needle tube 1, the end of the circumcision needle tube is folded outwards and fixed in the groove of the handle 3 after opening, and the circumcision needle tube can be fixed well after closing. The tail end of the needle core 2 is fixed to the fixed structure of the head end of the inner screw rod 22 of the handle, and the fixed structure can be but not limited to threaded screw-in or directly inserted into the card slot. That is, the grip handle 3 and the circumcision needle tube 1 are designed to be detachable, and the needle core 2 and its tail end structure to grip the inner screw rod 22 of the handle are designed to be detachable. The advantage of this structure is the detachable st...

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Abstract

The invention discloses a rust ring type corneal foreign body removing needle, and belongs to the technical field of medical instruments. The needle comprises a circumcision needle tube, a needle core, a holding handle and an adjusting wrench. By means of the mode, the problem that in the prior art, the rust ring is a part of the whole corneal lamellar collagenous fiber, the collagenous fiber needs to be cut off during removal, and the collagenous fiber of the rust ring foreign matter for a circle is difficult to cut off during needle tip sample removal or all other foreign matter removal at present can be solved. Corneal lamellar fibers are cut off after girdling, no obvious tight connection exists between layers relatively, separation is easy, and therefore the rust ring can be easily and completely scraped, cut and stripped through a rust ring scraping knife at the head end of the needle core.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a rust ring type corneal foreign body removing needle. Background technique [0002] At present, corneal foreign bodies are generally removed under a slit-lamp microscope with a No. 4.5 disposable sterile injection needle. Generally, corneal foreign bodies can be easily removed with this needle, but for the removal of rust rings produced by iron corneal foreign bodies, the sharp and small needle tip is used. The rust ring will cause a lot of damage to the cornea, and it is difficult to remove it. Therefore, after the removal of the rust ring foreign body, there will be obvious corneal scars. In patients with low cooperation, the sharp front end may puncture the cornea or even penetrate. risk. [0003] Corneal rust rings are ring-shaped rust marks formed by the oxidation of splashed iron filings and slag on the surface of the cornea. If they are not scraped off in time, the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00709A61F2009/00872
Inventor 裘项旭
Owner 永康市第一人民医院
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