Mani, Inc.

Masanori Oshino

Etsuo Murakami

A cannula holder capable of securing a cannula to the holder at the time of piercing work, and easily removing the cannula from the holder using tweezers or the like. The cannula holder, to which a piercing needle for piercing an eyeball and a cannula are attached when attaching the cannula used in ophthalmic operations to the eyeball, includes claw portions that are formed on a front end of the cannula holder and which press sides of the cannula either at positions where said claw portions face each other or from multiple directions. A depression may be provided in a side of the front end of the cannula holder, allowing visibility of a part of a back end of the cannula from the depression.

Cannula holder

There is provided a cannula that suppresses leakage of vitreous humor, etc., from a slit through which a surgical tool is inserted. A cannula () used for piercing through an eyeball during an ophthalmic operation, includes: a pipe (); a cylindrical base () fitted together with the circumference of a base end of the pipe (); a resin cap () including a cover surface () covering the surface of the base end of the pipe () and a side surface () covering a cylindrical side surface of the base (); and a slit () passing through the center of the cover surface (). The outer diameter of the cylindrical side surface of the base () at a position where the cylindrical side surface of the base () touches the side surface () of the cap is larger than the inner diameter of the side surface of the cap.

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Utsunomiya, Japan

Masanori Oshino