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Discission needle and operation method thereof

A needle body and gear technology, applied in the field of capsulorhexis needle, can solve the problems of low success rate of capsulorhexis and difficulty in controlling the size of capsulorhexis opening, and achieve the effect of simple operation, avoiding intraoperative complications and improving the success rate

Active Publication Date: 2015-05-13
邓欣然
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a capsule cutting needle and its operation method to solve the problem that the surgeon relies on experience to perform capsulorhexis operation, and the capsulorhexis process is not easy to control the size of the capsulorhexis opening, resulting in a low success rate of capsulorhexis.

Method used

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  • Discission needle and operation method thereof
  • Discission needle and operation method thereof
  • Discission needle and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , figure 2 , image 3 As shown, a cystotomy needle includes a rotating rod 9, a first gear, and a second gear 7 meshing with the first gear. The first gear includes a disc base 10 and gear teeth 2 arranged on the upper surface of the disc base 10. 1. The column 1 that runs through the center of the disc base 10; the upper part of the column 1 is provided with a groove 6, the groove 6 is a cylinder, the rotating rod 9 runs through the center of the second gear 7, and the rotating rod 9 is close to the shape of the end of the second gear 7 Match the shape of the groove 6; the inner surface of the disc base 10 is provided with a slide rail groove 12, the slide rail groove 12 is adapted to the shape of the protruding block 11 arranged on the outer surface of the column 1, and the side end of the disc base 10 is provided with There is a needle body 4, one end of the needle body 4 is installed on the disc base 10 through the fastening structure 3, and the ...

Embodiment 2

[0035] In this embodiment, on the basis of Embodiment 1, the needle body 4 is perpendicular to the axis of the upright column 1 located at the upper end of the disc base 10, the angle between the needle body 4 and the cutting tip 5 is 90 degrees, and the structure of the needle body 4 is Located on the same side as the column 1 at the lower end of the disc base 10, the specification of the needle body 4 can be determined according to the radius of the capsulorhexis membrane, when the structure of the needle body 4 is perpendicular to the vertical axis of the column 1 structure located at the upper end of the disc base 10 , the radius of the capsulorhexis opening is equal to the distance from the cutting tip 5 at the lower end of the needle body 1 to the center of the column 1, which is equal to the length of the needle body 4 plus the radius of the disc base 10. No longer.

Embodiment 3

[0037] This embodiment is further defined on the basis of the above embodiments, the protruding block 11 is located at the lower end of the groove 6 . Here, the relative positions of the grooves 6 and the protruding blocks 11 that are both arranged on the column 1 are further limited. Preferably, the protruding blocks 11 are located at the lower end of the structure of the grooves 6 . The other structures of this embodiment are the same as those of the foregoing embodiments, and will not be repeated here.

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Abstract

The invention discloses a discission needle and an operation method of the discission needle. The discission needle comprises a rotating rod, a first gear and a second gear meshed with the first gear. The first gear comprises a circular disc base, gear teeth arranged on the upper surface of the circular disc base and a stand column penetrating through the center of the circular disc base. The upper portion of the stand column is provided with a groove, and the groove is cylindrical. The rotating rod penetrates through the center of the second gear, and the end, close to the second gear, of the rotating rod is matched with the groove in shape. The inner surface of the circular disc base is provided with a sliding rail groove, and the sliding rail groove is matched with a protruding block arranged on the outer surface of the stand column in shape. The side end of the circular disc base is provided with a needle body, one end of the needle body is arranged on the circular disc base through a fastening structure, and the other end of the needle body is vertically connected with the tip end of a scraping membrane. By means of the discission needle and the operation method of the discission needle, linkage between the second gear and the first gear is achieved, the needle body is driven to conduct capsulorhexis operation, the edge of a capsulorhexis mouth generated after capsulorhexis operation is finished is continuous and circular, and intraoperative complications caused by traditional surgical operation are avoided; operation is simple, no longer learning cycle is needed, and the skill level can be reached.

Description

technical field [0001] The invention relates to an ophthalmic surgical instrument, in particular to a cystectomy needle and an operating method thereof. Background technique [0002] Currently, in extracapsular cataract extraction surgery, continuous capsulorhexis is one of the key steps in cataract surgery, and its success or failure directly affects the surgical effect and the patient's health. Therefore, when performing continuous capsulorhexis during operation, capsulorhexis forceps are often used. The current operating method for surgeons is to bend the head of the 23-gauge needle for 1 / 4 of a circle, so that the angle between the needle tip and the slope of the needle is about 45°, and use the needle to puncture near the center of the anterior capsule of the lens. Open the opening, and use the side edge of the needle to incise the anterior capsule in an arc, spanning the expected radius of capsulorhexis. Lift the anterior capsule upward from below the leading edge of...

Claims

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Application Information

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IPC IPC(8): A61F9/007
Inventor 邓欣然吴峥峥
Owner 邓欣然
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