Corneal limbus stem cell transplanter

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...

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, conjunctiva and sclera (at the limbus), It is simple and safe to operate, greatly reduces the difficulty of surgery, saves operation time, improves the therapeutic effect of surgery, maximizes the treatment benefit, and shortens the period of learning and training for operators. It is expected to be popularized in primary medical institutions. Stem cell transplantation has no related reports

Images