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Tunnel-implanted round capsulotomy instrument applied to cataract surgery

A cataract and implantable technology, which is applied in ophthalmic surgery and other fields, can solve problems such as difficulty in popularization and high price of femtosecond laser, and achieve the effects of avoiding uncertainty, improving surgical safety, and reducing surgical difficulty

Active Publication Date: 2016-02-03
THE SECOND AFFILIATED HOSPITAL OF XIAN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the only femtosecond laser that can accurately complete CCC is the femtosecond laser combined with the anterior segment positioning system, but the femtosecond laser is expensive (estimated at about 10 million), so it is difficult to popularize

Method used

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  • Tunnel-implanted round capsulotomy instrument applied to cataract surgery
  • Tunnel-implanted round capsulotomy instrument applied to cataract surgery
  • Tunnel-implanted round capsulotomy instrument applied to cataract surgery

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] refer to figure 1 , figure 2 , a tunnel-implanted circular capsule cutter for cataract surgery, comprising a capsule cutter ring 1 , an injector 2 and an anterior chamber hook 6 . The diameter of the cutting ring is 6.5-7mm, which can be made of shape memory polymer SMPs, such as bio-based shape memory polyurethane (ShapeMemoryPolyurethane, SMPU); Ni-Ti memory alloy can also be used. Below the capsule cutting ring is a tooth-like structure 7( image 3 ), which are sharp teeth arranged in a row. The cystectomy ring can be loaded into the syringe at the time of surgery, or it can be pre-loaded into the tapered head of the syringe. The injector includes a conical head 3, a body 4, and an injection rod 5. The rear end of the conical head is connected to the front end of the body (detachable). The main surgical incision is matched; the injection rod is located in the body (inserted from the rear end of the body) to form a piston structure. The anterior chamber hook 6 i...

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PUM

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Abstract

The invention discloses a tunnel-implanted round capsulotomy instrument applied to a cataract surgery. The capsulotomy instrument is characterized in that a round capsulotomy ring, after being folded, is installed or pre-installed in the conical head of a remolded injection device; the capsulotomy ring is connected to a cataract tunnel incision and is pushed into an eye by virtue of an injection rod, and the round capsulotomy is expanded; a round capsule opening of fixed diameter is squeezed in the central part of a crystalline lens; the injection rod is taken out; and the round capsulotomy ring is folded for the second time by virtue of an anterior chamber hook and the round capsulotomy ring is taken out.

Description

technical field [0001] The invention relates to an instrument for ophthalmic surgery. During cataract extraction, a circular capsule opening with a fixed diameter can be precisely formed on the anterior lens capsule, which can replace manual continuous circular capsulorhexis (CCC) and avoid capsulorhexis during operation. Dehiscence or capsulorhexis is not round. Background technique [0002] At present, in cataract extraction, especially phacoemulsification lens extraction, continuous circular capsulorhexis (CCC) is a key step, a high-quality CCC will ensure the safety of the operation and is closely related to the effect of the operation. However, at present, CCC is mainly performed manually. This technique requires doctors to have skilled surgical skills and rich clinical experience. Accidents such as centering, capsulorhexis opening is too large or too small. This situation will increase the risk of surgery and intraoperative and postoperative complications (such as ru...

Claims

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Application Information

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IPC IPC(8): A61F9/007
Inventor 熊蕾
Owner THE SECOND AFFILIATED HOSPITAL OF XIAN JIAOTONG UNIV
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