Hydrodissection needle
First Claim
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1. A hydrodissection needle for use for performing surgery on a person'"'"'s eye, comprising:
- an elongated member having a central axis extending along its length, a rear end, an elongated body portion, and a sharp front end with two flattened opposite facing sides extending rearward from said sharp front end to said elongated body portion,said two flattened sides being the only flattened sides extending rearward from said sharp front end and being free of apertures,a central aperture extending generally along said central axis of said member from said rear end to a position near said front end,said member having a side wall surrounding said central aperture,said elongated body portion being generally cylindrical having the same outside diameter from the rear of said flattened sides along a substantial portion of the length of said elongated body portion,said member having a rear inlet opening leading to said central aperture at said rear end, andat least one outlet opening formed through said elongated body portion near and rearward of said two flattened sides and in fluid communication with said central aperture for allowing the flow of liquid through said member from said rear inlet opening at said rear end, by way of said central aperture and from said central aperture outward by way of said outlet opening.
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Abstract
The hydrodissection needle has a sharp tip end and at least two elongated outlet openings which are located at or near the needle tip with their elongated axes extending rearward. In another embodiment, at least one elongated helical outlet opening is provided near the needle tip end.
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Citations
8 Claims
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1. A hydrodissection needle for use for performing surgery on a person'"'"'s eye, comprising:
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an elongated member having a central axis extending along its length, a rear end, an elongated body portion, and a sharp front end with two flattened opposite facing sides extending rearward from said sharp front end to said elongated body portion, said two flattened sides being the only flattened sides extending rearward from said sharp front end and being free of apertures, a central aperture extending generally along said central axis of said member from said rear end to a position near said front end, said member having a side wall surrounding said central aperture, said elongated body portion being generally cylindrical having the same outside diameter from the rear of said flattened sides along a substantial portion of the length of said elongated body portion, said member having a rear inlet opening leading to said central aperture at said rear end, and at least one outlet opening formed through said elongated body portion near and rearward of said two flattened sides and in fluid communication with said central aperture for allowing the flow of liquid through said member from said rear inlet opening at said rear end, by way of said central aperture and from said central aperture outward by way of said outlet opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification