Hand held surgical tool
AssigneeMicrins Surgical Instruments, Ltd.
InventorsPaul B. Specht, Harry P. Weinrib
Life of this patent
Estimating the term…
Abstract
Disclosed is a microsurgical tool for use in microsurgery having a central cylindrical body which can be rotated by a surgeon. The body includes first and second portions joined at a closed end, and having needle points at the other end. Opposing longitudinal grooves formed in each half receive an alignment rod which maintains alignment of the tips as the portions are mated together. The portions of cooperating intermating recesses and protrusions extending in transverse directions are located adjacent the tips of the instrument. The protrusions and recesses provide a second, early alignment of the portions adjacent the tips of the instrument as the instrument is closed.
Claims20
A hand-held microsurgical tool for use in microsurgery, said tool comprising:
- an elongated body including a cylindrical section having a longitudinal axis about which the body may be rotated by a surgeon;
- said cylindrical section comprised of first and second generally opposed, coextensive longitudinally extending portions joined at a closed end;
- needle point ends on each of said first and second portions located opposite from the closed end and movable toward and away from each other between closed and open positions, respectively;
- and
- alignment means for maintaining alignment of the needle point ends when in the open and closed positions and at all intermediate positions therebetween, said alignment means comprising an interior guide member having a surface in sliding engagement with at least one of said first and second portions, said guide member being located within the configuration of the cylindrical section so as not to interfere with the rotation of the cylindrical section of the tool.
A hand-held microsurgical scissors for use in microsurgery, said scissors comprising:
- an elongated body including a central cylinder portion having a longitudinal axis about which the body may be rotated by a surgeon;
- means on said first and second portions on said elongated body being joined at a closed end;
- semiconical pointed ends on each of said first and second portions located opposite from the closed end and movable between toward and away from each other and closed and open positions, respectively for cutting;
- cutting edges on each of said semiconical ends for cutting tissue placed therebetween;
- and
- alignment means for maintaining alignment of the semiconical ends and the cutting edges when cutting tissue, said alignment means maintaining alignment of the semiconical ends when in the open and closed positions and at all intermediate positions therebetween, said alignment means being located within the configuration of the body and so as not to interfere with the rotation thereof.
A hand-held microsurgical scissors for use in microsurgery, said scissors comprising:
- an elongated body including a central cylinder portion having a longitudinal axis about which the body may be rotated by a surgeon;
- first and second opposed portions of said elongated body lying on either side of a first plane and extending generally parallel to said axis;
- means for hingedly joining first ends of said portions together;
- opposed axially-extending semiconical scissors blades lying on either side of a second plane generally normal to said first plane and carried on second ends of respective opposed portions so as to be movable toward and away from each other between closed and open positions, respectively, said scissors blades defining a needle-like tip when in said closed position;
- cutting edges on each of said scissors blades for cutting tissue placed therebetween;
- and
- alignment means for maintaining alignment of said scissors blades and said cutting edges when cutting tissue, said alignment means located within the configuration of the body so as not to interfere with the rotation thereof.
A hand-held microsurgical tool for use in microsurgery, said tool comprising:
- an elongated body including a cylindrical section having a longitudinal axis about which the body may be rotated by a surgeon;
- said cylindrical section comprised of first and second generally opposed, coextensive longitudinally extending portions joined at a closed end;
- needle point ends on each of said first and second portions located opposite from the closed end and movable toward and away from each other between closed and open positions, respectively, said needle point ends having free ends and complementary-shaped interengaging accurate surfaces, with one needle point end overlying the free end of the other needle point end, so as to form a working area between the needle point ends for grasping and manipulating a microsurgical needle;
- and
- alignment means for maintaining alignment of the needle point ends when in the open and closed positions and at all intermediate positions therebetween, said alignment means comprising an interior guide member having a surface in sliding engagement with at least one of said first and second portions, said guide member being located within the configuration of the cylindrical section so as not to interfere with the rotation of the cylindrical section of the tool.
A hand-held microsurgical tool for use in microsurgery, said tool comprising:
- an elongated body including a central cylindrical section having a longitidinal axis about which the body may be rotated by a surgeon;
- finger-texturing means on at least a part of said central cylinder portion comprising a plurality of spaced-apart grooves inwardly extending from an outside surface of said body;
- said central cylindrical section comprised of first and second generally opposed, coextensive longitudinal portions joined at a closed end;
- needle point ends on each of said first and second portions located opposite from the closed end and movable toward and away from each other between closed and open positions, respectively;
- mating projection and recess members carried on respective ones of said first and second portions so as to be movable toward and away from each other as said portions are moved between said closed and said open positions, respectively;
- alignment means for maintaining alignment of the needle point ends,
- said alignment means maintaining alignment of the needle point ends when in the open and closed positions and all intermediate positions therebetween, said alignment means comprising an interior elongated guide member having an exterior smooth rounded surface and extending into said central cylindrical section and received in at least one of said first and second portions so as to be located within the configuration of the central cylindrical section and so as not to interfere with the rotation of the central cylindrical section of the tool.
Dependencies are inferred from the claim text.