Title:
角膜手術用医療器具
Document Type and Number:
Japanese Patent JP4189320
Kind Code:
B2
Abstract:
Provided here is a medical instrument, which is employed in a surgical operation of a cornea and capable of preparing a corneal epithelium sheet (including a flap and a cap) in a corneal refractive correction surgical operation or a corneal epithelium grafting operation. The medical instrument employed in the corneal surgical operation of the present invention is provided with a thread-like member 5 which has a diameter D of up to 100 mu m and is positioned in the boundary between a corneal epithelium 51 and a corneal stroma 55. The thread-like member 5 is provided with: a resiliency which makes it possible for a first contact surface 5a of the thread-like member 5 to deform along a shape of a contact surface of a corneal stroma 55 in response to a driving force F applied to the thread-like member 5 in a direction toward a bottom portion of the corneal stroma 55; and, a strength which makes it possible for a second contact surface 5b of the thread-like member 5 to push up the lowermost bottom surface or contact surface of a corneal epithelium 51 when the thread-like member 5 is driven along the boundary surface 61 between the corneal stroma 55 and the corneal epithelium 51 in response to a thrust f2 applied in a direction along the boundary surface 61.
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Inventors:
Keizo Takahashi
Application Number:
JP2003548746A
Publication Date:
December 03, 2008
Filing Date:
June 27, 2002
Export Citation:
Assignee:
International Trading Co., Ltd.
International Classes:
A61F9/013; A61F9/007
Domestic Patent References:
| JP2000501002A | ||||
| JP2000237229A |
Foreign References:
| WO1998053774A1 | ||||
| WO2000009055A1 | ||||
| WO1990001905A1 |
Attorney, Agent or Firm:
Haruo Saito