Radial jaw biopsy forceps
AssigneeSymbiosis Corporation
InventorsThomas O. Bales, Charles R. Slater, Kevin W. Smith
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Abstract
A biological forceps device for the taking of tissue samples from a body, comprising a flexible main coil attached at its distal end to a pair of homologous cast jaws. The jaws have radially arranged teeth on their distalmost end. The jaws are opened and closed by attachment to a pair of pull wires which extend through the main coil, into a handle at its proximal end. The handle has a spool which slides about a central shaft attached to the main coil. The spool is attached to the pull wires, so that movement of the spool with respect to the central shaft, effectuates a force on the proximal ends of the levered jaws, to open and close them, appropriately.
Claims19
An endoscopic instrument, comprising:
- a) a flexible tube having a distal end and a proximal end;
- b) opposed first and second jaws, said first jaw being rotatably disposed on said distal end of said flexible tube, and said first jaw including a proximal tang defining a first bore;
- and
- c) actuation means for effecting rotation of said first jaw, said actuation means comprising a first pull wire having a first pair of angled bends at a distal end of said first pull wire, said first pull wire extending through said first bore at said first pair of angled bends, and terminating without forming a loop.
An endoscopic instrument, comprising:
- a) a flexible tube having a distal end and a proximal end;
- b) opposed first and second jaws, said first jaw being rotatably disposed on said distal end of said flexible tube, and said first jaw including a proximal tang defining a first bore, said proximal tang having a proximal end;
- and
- c) actuation means for effecting rotation of said first jaw, said actuation means comprising a first pull wire having a first pair of angled bends at a distal end of said first pull wire, said first pull wire extending through said first bore at said first pair of angled bends, and terminating at a point distal of said proximal end of said tang.
Dependencies are inferred from the claim text.