In vitro corneal mechanical properties parameter testing device

Abstract

The invention provides a mechanical property parameter detection device of an in-vitro cornea. The mechanical property parameter detection device comprises an installation platform and a controller, wherein a cornea fixation mechanism, deformation quantity acquisition mechanisms and a deformation drive mechanism are arranged on the installation platform, each deformation quantity acquisition mechanism comprises a distance sensor and at least two high-speed cameras, an installation frame is vertically arranged on the installation platform, and each high-speed camera is provided with a rotation drive mechanism; the location plate of the distance sensor is further provided with a slide drive mechanism, and an angle adjustment mechanism; the cornea fixation mechanism comprises an accommodating cabin and a clamping mechanism, and the clamping mechanism comprises a lamination panel, a clamping unit and a drive unit. The mechanical property parameter detection device provided by the invention has the following beneficial effects that the number and the positions of the deformation quantity acquisition mechanisms are reasonably arranged, thus facilitating post-processing; the distance of the distance sensor relative to the accommodating cabin is randomly adjustable, and the height of the distance sensor is adjustable, thus guaranteeing alignment with the central position of the accommodating cabin; the angles of the high-speed cameras are adjustable, thus improving the detection accuracy.

Description

technical field [0001] The invention relates to the field of medical auxiliary equipment, in particular to a device for detecting mechanical property parameters of an isolated cornea. Background technique [0002] Keratoconus is a relatively common ophthalmic disease in clinical practice, which can produce highly irregular myopic astigmatism and different degrees of visual impairment. The incidence rate in European and American countries is 0.01%~0.05%, and in Japan is 0.07%~0.08%, but there is still no epidemic in my country. learning information. As an important biological attribute, the biomechanical properties of the cornea can directly affect the shape of the cornea, and then affect the refractive state and optical imaging quality of the cornea. Studies have shown that the occurrence and development of keratoconus are closely related to the changes in the regional biomechanical properties of the cornea. Most of the pathological changes occur in the lower temporal part o...

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Problems solved by technology

However, the existing experimental platform for in vitro corneal expansion still has the disadvantage that the measurement area is small and cannot provide regional differences in the distribution of biomechanical properties of the whole cornea.

[0003] The invention patent application with the application number 201310597129.0 discloses a measurement platform for the biomechanical performance parameters of the isolated cornea, which includes an installation platform, a corneal fixation device, a pressure device, and a shooting device. The measurement platform has the following disadvantages: (1) shooting The equipment is located at the front end of the corneal fixation device and requires three-dimensional deformation measurement, which leads to complex data processing algorithms; (2) The shooting angle cannot be adjusted, which further increases the difficulty of detection; (3) The size of the corneal fixation device is fixed and cannot be adjusted according to the shape of the cornea. Poor adaptability of clamping devices to different corneas, increasing uncontrollable corneal deformation

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