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Corneal trephine

A corneal trephine and body technology, applied in the field of surgical clinical medical devices, can solve the problems of high price, complicated operation, increase the economic burden of patients, etc., and achieve the effect of safe and accurate operation

Active Publication Date: 2013-01-02
苏州碧利医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of corneal trephine is fixed on the patient's cornea with a negative pressure suction ring, and the depth of circumcision can be calculated through the rotation angle of the corneal trephine, its biggest disadvantage is that the operation is complicated, disposable, and expensive , greatly increasing the financial burden on patients

Method used

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Embodiment Construction

[0025] Embodiments of the corneal trephine according to the present invention will be described below with reference to the accompanying drawings. It will be apparent that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in this specification, the drawings are not drawn to scale.

[0026] Figure 4 A perspective view of a corneal trephine according to an embodiment of the present invention is shown, Figure 5 A perspective sectional view of the corneal trepan drill described in this embodiment is shown, Figure 6 A three-dimensional exploded view of the corneal trephine described in this embodiment is shown. Such as Figure 4-Figure 6 As shown, the corneal trephine 100 according to an embodiment of the present invention mainly includes a body part 10 , a kn...

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Abstract

The invention provides a corneal trephine. The corneal trephine comprises a body part in a hollow cylindrical shape, a knife part in an approximate hollow cylindrical shape, and a finger holding part, wherein the thickness of a column wall of the knife part is gradually reduced from top to bottom; a knife edge for annular cutting is formed at the bottommost end of the column wall; an upper end of the knife edge is fixedly connected with a lower end of the body part; a central shaft line of the knife edge is overlapped with that of the body part; finger holding part comprises a hollow cylindrical body and lug bodies symmetrically fixed to an outer side surface of the hollow cylindrical body, the hollow cylindrical body of the finger holding part can be rotationally sleeved onto the body part; and an alignment device is also arranged on the finger holding part. When being used for corneal transplantation, the corneal trephine can be easily and accurately fixed to a cornea of a patient so as to avoid shifting or separation of the corneal trephine in the corneal transplantation, a proper and uniform pressure can be easily applied to the corneal trephine, and a knife feeding situation can be conveniently observed, thereby enabling the corneal transplantation to be safer and accurate.

Description

technical field [0001] The invention relates to a surgical clinical medical instrument, in particular to a corneal trephine. Background technique [0002] Blinding corneal disease, diabetic retinopathy, and glaucoma have become the three leading blind eye diseases in the world today. Blinding keratopathy is mostly caused by infectious keratitis, corneal dystrophy, corneal degeneration, or corneal trauma. Currently, the only way to restore sight to patients with blinding corneal disease is a corneal transplant. According to statistics, there are more than 1.5 million patients with blinding corneal diseases in my country, but due to the limited sources of corneal donors, only about 10,000 patients can receive corneal transplants every year. Therefore, improving the survival rate of corneal donors, perfecting corneal transplantation, and reducing intraoperative and postoperative complications are crucial to the success of corneal transplantation. [0003] In corneal transpla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
Inventor 许永根肖真洪晶
Owner 苏州碧利医疗科技有限公司
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