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US 5,047,008 AGranted
Vitrectomy probe
AssigneeStorz Instrument Company
InventorsEugene de Juan, Jr., Gerald S. Gahn, John J. Weidenbenner, Dyson Hickingbotham
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AssigneeStorz Instrument Company
InventorsEugene de Juan, Jr., Gerald S. Gahn, John J. Weidenbenner, Dyson Hickingbotham
Estimating the term…
An improved vitrectomy probe for removing vitreous and other fibrous gel materials. A hollow cutting blade is reciprocated within a smooth bore hollow needle of the microsurgical vitrectomy probe across a cutting edge of the outer needle slicing the fibrous material of the vitreous. A pressurized fluid source, diaphragm and spring cooperate to provide for the reciprocation of the blade. A vacuum source removes vitreous material through the hollow needle. A reciprocating suction outlet tube attached to the hollow needle directs vitreous material into a vacuum fitting which is isolated from the motion of the reciprocating outlet tube. An adjustment screw limits the travel of the reciprocating blade as well as the size of the opening in the needle. A dissector head faciitates the separation of vitreous fibers and directs them into the needle opening.
A microsurgical cutting device for cutting and removing fibrous gel, said device having a housing, a substantially hollow outer needle having an outward end with an aperture therein, a hollow tubular member having a cutting blade disposed within said outer needle an actuation means, and a suction means, said device comprising:
A microsurgical cutting device for cutting and removing fibrous gel, said device including a fingergrip, a substantially hollow outer needle having an open end disposed within said fingergrip and a substantially closed outer end extending from said fingergrip, said needle including an aperture near said closed end, a reciprocable tubular tool having a cutting end disposed within said needle, means for reciprocating said tool operatively connected to said tool, a suction means connected to the end of said tool opposite said cutting end, said device comprising:
A microsurgical cutting device for cutting and removing fibrous gel, said device including a fingergrip, a substantially hollow outer needle having an open end disposed within said fingergrip and a substantially closed end extending from said fingergrip, said needle including an aperture near said closed end, a reciprocable tubular tool having a cutting end disposed within said needle, means for reciprocating said tool operatively connected to said tool, a suction means connected to the end of said tool opposite said cutting end, said device comprising:
A microsurgical cutting device for cutting and removing fibrous gel, said device including a fingergrip, a substantially hollow outer needle having an open end disposed within said fingergrip and a substantially closed end extending from said fingergrip, and needle including an aperture near said closed end, a reciprocable tubular tool having a cutting end disposed within said needle, means for reciprocating said tool operatively connected to said tool, a suction means connected to the end of said tool opposite said cutting end, said device comprising:
A microsurgical cutting device for cutting and removing fibrous gel, said device including a fingergrip, a substantially hollow outer needle having an open end disposed within said fingergrip and a substantially closed end extending from said fingergrip, said needle including an aperture near said closed end, a reciprocable tubular tool having a cutting end disposed within said needle, means for reciprocating said tool operatively connected to said tool, a suction means connected to the end of said tool opposite said cutting end, said device comprising:
Dependencies are inferred from the claim text.