Importance

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Abstract

An endoscopic needle device includes an inner fluid conduit, an outer sheath extending over the length of the conduit, a longitudinally stiff wire extending through the conduit, and a needle fixedly attached to the distal end of the conduit. The distal end of the wire is coupled to one or both of the needle and the distal end of the conduit. The needle includes a proximal opening such that the hollow of the needle is in fluid communication with a lumen of conduit. A proximal handle includes a stationary member and a movable member longitudinally movable relative to the stationary member. The proximal end of the outer sheath is coupled to the stationary member, and the stationary member includes structure to mount the handle to a port of an endoscope. The movable member includes a passageway, and the proximal end of the conduit is coupled to the distal end of the movable member, and a port is provided at the proximal end of the movable member. A syringe may be coupled to the port and operated to inject a fluid which travels through the passageway, the lumen of the conduit, and the needle. In addition, the proximal end of the wire is coupled to the movable member. The handle assembly also includes a knob rotatably coupled to the stationary member, wherein rotation of the knob results in reciprocal movement of the movable member relative to the stationary, and consequently the needle relative to the distal end of the outer sheath.

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First Claim