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Stretching suture implanted into Schlemm tube through internal approach

A suture and internal approach technology, applied in ophthalmic surgery, laser surgery, etc., can solve the problems of large surgical trauma, inability to play the role of support and expansion, and affect the effect of surgery, so as to ensure the effect of surgery

Inactive Publication Date: 2021-01-05
BEIJING TONGREN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although external viscocanuloplasty can introduce sutures to permanently dilate Schlemm's canal, it needs to make conjunctival and scleral flaps, which requires large surgical trauma, complicated and time-consuming operation; internal viscocanuloplasty is approached through a small incision on the transparent limbus , does not touch the conjunctiva and sclera, the surgical trauma is small, but it is difficult to ligate the suture in the closed space of the anterior chamber, and the lumen is dilated only by injecting viscoelastic into the Schlemm's canal and collecting tube, and the injected viscoelastic The elastic agent will soon metabolize and flow away with the aqueous humor, and cannot play a lasting role in supporting and expanding, which will affect the long-term surgical efficacy

Method used

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  • Stretching suture implanted into Schlemm tube through internal approach
  • Stretching suture implanted into Schlemm tube through internal approach
  • Stretching suture implanted into Schlemm tube through internal approach

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A method for making stretch sutures implanted into Schlemm's canal through the internal route, comprising the following steps:

[0041] S1. Take a 10cm long suture, fold 9cm of it in half into a double-strand thread, tie a knot at the end of the double-strand thread, tie the double-strand thread together, and reserve the remaining 1cm of suture outside the knot;

[0042] S2. Take another suture and tie it at the head end of the double-strand thread to form an adjustable ring;

[0043] S3. At the end of the double-strand wire, make 3-5 knots with the double-strand thread itself, and the knots are interrupted by 1mm, and the distance from the knot closest to the head end to the head end is less than 36mm;

[0044] S4. Cut off the redundant parts at both ends of the suture used for ligation at the head end, and sterilize with ethylene oxide or hydrogen peroxide at low temperature for later use.

Embodiment 2

[0046] A method for using a stretch suture implanted into Schlemm's canal via an internal route, comprising the following steps:

[0047] S1. Bind the single-strand suture reserved on the stretch suture to the head end of the microcatheter;

[0048] S2. Insert the tip of the microcatheter with sutures into the anterior chamber, and place it in the nasal chamber angle;

[0049] S3. With the assistance of gonioscopy, insert the tip of the microcatheter with sutures into the incision on the inner wall of Schlemm's canal on the nasal side, and then go antegrade to the entire circumference of the Schlemm's canal;

[0050] S4. After the microcatheter travels the entire circumference of the Schlemm lumen, it passes through the other end of the incision on the inner wall, and the end of the suture with the adjustment ring is clamped into the anterior chamber with intraocular forceps;

[0051] S5. The intraocular scissors cut off the suture bound on the microcatheter, and the end of t...

Embodiment 3

[0054] A method for preparing and using a stretch suture implanted into Schlemm's canal via an internal route:

[0055]S1. Prefabricated sutures: Sutures can be made under a microscope before surgery or made in advance, and those made in advance need to be sterilized for later use (low-temperature disinfection with ethylene oxide or hydrogen peroxide is recommended).

[0056] (1) Choose 10-0 polypropylene sutures.

[0057] (2) Take a 10cm suture, fold 9cm of it into double strands, and tie a knot at the end of the double strands, tie the double strands together (hereinafter referred to as the end of the suture), and put a thread on the end of the knot 1 cm is reserved for binding to the microcatheter.

[0058] (3) Another 10-0 polypropylene suture of about 1 cm was ligated at the head end of the double-strand suture, so that the head end formed an adjustable ring (hereinafter referred to as the suture head end).

[0059] (4) Continue to make knots with the double-strand thre...

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Abstract

For the problems that Ab externo Canaloplasty is lasting in expansion but is large intrauma and Ab interno Canaloplasty is small in trauma but is not lasting, the invention provides a stretching suture implanted into a Schlemm tube through an internal approach. The stretching suture is a double-strand line formed by folding; a plurality of line knots are wound at intervals at the tail end of the double-strand line; a section of single-strand suture is reserved at the line knots at the tail end; and the head end of the double-strand line is ligated to form an adjusting ring with the adjustablesize. According to the stretching suture, ligation in a closed space of the anterior chamber can be achieved, the suture line can be implanted into the Schlemm tube through a minimally invasive internal approach surgery, the lasting supporting and expansion effects are achieved while the minimally invasive surgery is performed, and consumables can be provided for a new minimally invasive glaucomasurgery.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a stretch suture for implanting Schlemm's canal via an internal route and a manufacturing method thereof. Background technique [0002] Glaucoma is a kind of optic nerve damage disease caused by pathological high intraocular pressure. Controlling intraocular pressure has become the main means of glaucoma treatment. Although anti-glaucoma drugs and laser technology provide the technology and possibility to control intraocular pressure, due to the particularity of the disease, a considerable number of glaucoma patients have to undergo surgery. At present, the mainstream operation method for glaucoma is trabeculectomy, but glaucoma filtration surgery has many uncertain factors and relatively high complications, such as postoperative low intraocular pressure, shallow anterior chamber, choroidal detachment, cystoid macular edema and Surgery failure, filtering bleb scarring and other ...

Claims

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Application Information

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IPC IPC(8): A61F9/007
CPCA61F9/00781A61F2009/00891
Inventor 王宁利石砚辛晨尹鹏万月王怀洲
Owner BEIJING TONGREN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV