Biopsy apparatus and method
AssigneeUnited States Surgical Corporation
InventorPaul A. Matula
Life of this patent
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Abstract
A biopsy apparatus for obtaining tissue samples includes a housing, an elongated member slidably and rotatably mounted in the housing and a blade having a stem portion pivotally mounted on the elongated member and moving transversely relative to a longitudinal axis of the elongated member between a stowed position and a deployed position. A method of sampling tissue includes the steps of providing the biopsy apparatus, inserting the elongated member into a tissue mass, deploying the blade, severing a tissue sample from the tissue mass by proximally retracting and rotating the elongated member, removing the elongated member from the tissue mass and extracting the tissue sample from a patient.
Claims32
A biopsy apparatus for obtaining tissue samples comprising:
- a housing;
- an elongated member slidably and rotatably mounted in the housing;
- and
- a blade having a stem portion pivotally mounted on the elongated member, and the blade being movable transversely relative to a longitudinal axis of the elongated member and configurable between a stowed position and a deployed position wherein the blade is disposed a predetermined distance outwardly away from an outer surface of the housing to facilitate cutting of tissue situated outwardly away from the outer surface of the housing.
A biopsy apparatus for obtaining tissue samples comprising:
- a housing;
- an elongated member slidably and rotatably mounted in the housing;
- and
- a blade having a stem portion pivotally mounted on the elongated member and the blade being movable transversely to a longitudinal axis of the elongated member and configurable between a stowed position and a deployed position wherein the blade is disposed a predetermined distance outwardly away from an outer surface of the housing to facilitate cutting of tissue situated outwardly away from the outer surface of the housing;
- and
- a shaft rotatably disposed within the elongated member which attaches to and rotates the blade between the stowed position and the deployed position, the shaft being turned by an actuator attached at a proximal end of the shaft.
A biopsy apparatus for obtaining tissue samples comprising:
- a housing;
- an elongated member slidably and rotatably mounted in the housing;
- a blade having a stem portion pivotally mounted on the elongated member and the blade being movable transversely relative to a longitudinal axis of the elongated member between a stowed position and a deployed position wherein the blade is disposed a predetermined distance outwardly away from an outer surface of the housing to facilitate cutting of tissue situated outwardly away from the outer surface of the housing the blade having an angled leg portion transversely orientated relative to the stem portion and substantially parallel to the longitudinal axis;
- a shaft rotatably disposed within the elongated member which attaches to and rotates the blade between the stowed position and the deployed position, the shaft being turned by a actuator attached at a proximal end of the shaft;
- and
- the elongated member having stops formed on a proximal end for securing the actuator in a first position corresponding to the stowed position of the blade and a second position corresponding to the deployed position of the blade and a distal end of the elongated member having a step thereon for preventing rotation of the blade during operation in the deployed position, the elongated member defining a recess for stowing the angled leg portion of the blade when in its stowed position.
A method of sampling tissue comprising the steps of:
- providing a housing, an elongated member slidably and rotatably mounted in the housing and a blade having a stem portion pivotally mounted on the elongated member, and the blade being movable transversely to a longitudinal axis of the elongated member and configurable between a stowed position and a deployed position;
- inserting the elongated member into a tissue mass;
- deploying the blade;
- severing a tissue sample from the tissue mass by proximally retracting and rotating the elongated member;
- removing the elongated member from the tissue mass;
- and
- extracting the tissue sample from a patient.
Dependencies are inferred from the claim text.