US 4,877,026 AGranted

Surgical apparatus

AssigneeMicroline, Inc.

InventorHughes de Laforcade

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Abstract

A surgical apparatus for performing a surgical procedure such as severing tissue in microsurgical operations. In the case of a cutting implement, the apparatus includes an elongated rigid housing having an inner wall and supporting therein first and second elongated shaft members. The first and second shaft members each have juxtaposed inner surfaces slidable relative to each other and outer surfaces terminating in corners which abut and are slidable relative to the inner tubular wall. The first shaft has a driven end and an active or operable cutting end having a first cutting edge disposed outside of the tubular housing. The second shaft has a fixed end and a cutting end with a second cutting edge also disposed outside of the tubular housing. Drive means are connected to the driven end of the first shaft for causing axial reciprocatory movement of the first cutting edge through a predetermined stroke distance to carry the first cutting edge past the second cutting edge to effect cutting action.

Claims24

Dependent claims

A surgical apparatus for insertion into the eye for surgical procedures, said apparatus comprising:

an elongated rigid tubular housing of circular cross section having an inner tubular wall supporting therein a first and a second elongated shaft member;
said first and said second elongated shaft members each having juxtaposed inner surfaces slidable relative to each other for a predetermined stroke distance, said first and said second shaft members further having outer surfaces terminating in corners, said corners abutting said inner tubular wall, said shaft members being held in a spacial relationship relative to each other and said inner tubular wall by said corners, whereby said shaft members occupy only a portion of the space in said inner tubular housing, thus leaving a freeboard space between said outer surfaces and the inner tubular wall;
said first shaft member having at one end, a driven end, and at the other end a first operable means disposed thereon;
said second shaft member being fixedly disposed in said tubular housing and having a second operable means disposed thereon, said second operable means being cooperatable with said first operable means to perform a surgical procedure;
and
means for restraining the motion of said first shaft member on a plane parallel to the axis of said tubular housing and for limiting the distance of a stroke of said first shaft member relative to said second shaft member, whereby to limit the movement of said first operable means relative to said second operable means.

3 more elements

A surgical apparatus for insertion into the eye for surgical procedures, said apparatus comprising:

an elongated rigid tubular housing of circular cross section having an inner tubular wall and supporting therein a first and a second elongated shaft member;
said first and said second elongated shaft member each having juxtaposed inner surfaces slidable relative to each other for a predetermined stroke distance, said first and said second shaft members further having outer surfaces terminating in corners abutting said inner tubular wall, said shaft members being held in a spacial relationship relative to each other and said walls by said corners, whereby said shaft members occupy only a portion of the interior of said tubular member and leave freeboard space between the outer surfaces and said inner tubular wall;
said first shaft member having at one end, a driven end and a first operable means disposed on the other end;
said second shaft member being fixedly disposed in said tubular housing and having a second operable means disposed thereon, said second operable means being cooperatable with said first operable means to perform a surgical procedure;
means for limiting the distance of a stroke of said first shaft member including at least one slot disposed in said first shaft member, a hole disposed in said second shaft member and an aperture in at least one wall of said tubular housing, and means passing through said aperture, said slot and said hole to restrain the movement of said first shaft member relative to said tubular housing and limit the stroke distance of the first shaft member to the length of said slot.

2 more elements

Dependencies are inferred from the claim text.