Corneal limbus stem cell transplanter

A technology of corneal limbal stem cells and transplantation devices, applied in the field of corneal limbal stem cell transplantation devices, can solve the problems of large safety hazards, complicated operations, shortening the learning and training period, etc., reduce manufacturing costs and medical costs, save operating space, and be easy to use. The effect of surgery

Pending Publication Date: 2018-09-28
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problems of the existing subretinal space stem cell transplantation device, which are complicated to operate and have great safety hazards
But about a kind of arc-shaped limbal stem cell tissue with adjustable length, 50 μm in thickness and 3 mm in width that can help the operator to cut accurately from the cornea in a short period of time at the junction area of ​​cornea,

Method used

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  • Corneal limbus stem cell transplanter
  • Corneal limbus stem cell transplanter
  • Corneal limbus stem cell transplanter

Examples

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Embodiment 1

[0052] Please see attached figure 1 , 2 , 3, figure 1 It is the front view of the negative pressure ring of a limbal stem cell transplantation device of the present invention, with figure 2 It is a schematic diagram of the appearance of a cutting head of a limbal stem cell transplanter of the present invention, and accompanying drawing 3 is a schematic diagram of a blade of a limbal stem cell transplantation device of the present invention. A limbal stem cell transplanter, the limbal stem cell transplanter includes a negative pressure ring 1, a cutter head 2; the negative pressure ring 1 includes a handle 11, a suction ring 12, a track 13, and a sliding post 14; The suction ring 12 is in a circular structure, and the surface is provided with a circle of scale marks (not shown in the figure); one end of the handle 11 is connected to the suction ring 12 at a certain inclined angle; the track 13 is the suction ring 12 The upper surface of the upper surface is a slightly incli...

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Abstract

The invention relates to a corneal limbus stem cell transplanter. The corneal limbus stem cell transplanter comprises a negative pressure ring and a cutter bit; the negative pressure ring comprises ahandle, a suction ring, a rail and a sliding column; the sliding column is arranged on the rail; the cutter bit comprises a cutter blade and a main body; the cutter bit is connected with the sliding column arranged on the rail through a circular column, and the cutter bit cuts corneal limbus stem cell tissue along the junctional zone of cornea, conjunctiva and sclera by pushing the sliding column.The corneal limbus stem cell transplanter has the advantages that by arranging the suction rings with the different specifications and different tilting angles, the precise positioning of the cutterblade in a cutter blade shell, the distance between the cutter bit and the upper end face of the suction ring and the length of a cutter edge, the extractor can precisely cut a plurality sections of corneal limbus stem cell tissue with the length being adjustable, the thickness being 50 microns and the width being 3 mm in the junctional zone of cornea, conjunctiva and sclera. The transplanter is easy and safe to operate, the operation difficult is greatly reduced, the operation time is saved, the treatment effect of operations is improved, the treatment benefits are maximized, and the studyingand training period of an operator is shortened.

Description

technical field [0001] The invention relates to the technical field of stem cell transplantation devices, in particular to a corneal limbal stem cell transplantation device. Background technique [0002] The normal physiological function of the cornea and the maintenance of the transparent state depend on the integrity and avascular state of the corneal epithelium, which is realized by a certain number of stem cells located at the base of the limbal epithelium. The corneal limbal cells are dense in the junction area of ​​the cornea, conjunctiva and sclera, and form a special palisade epithelial structure that surrounds the cornea in a radial arrangement at the base, called the Vogt palisades (palisades of Vogt) area, and the limbal stem cells are located in this area. Certain basal cells. The continuous renewal of the corneal epithelium and the repair of wounds depend on the proliferation and migration of limbal epithelial stem cells. At the same time, limbal stem cells are...

Claims

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Application Information

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IPC IPC(8): A61F9/007
CPCA61F9/00736
Inventor 毕燕龙邱颖萍黄心瑜牛国桢张语珊张娟
Owner SHANGHAI TONGJI HOSPITAL
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